filter cartridge and crankcase ventilation filter assembly

专利摘要:
air / oil separation assemblies; components and methods. in accordance with the present disclosure, arrangements, systems, components, characteristics and methods for separating hydrophobic fluid such as trapped oil as aerosols from gas streams, such as crankcase vent gas streams, are described. the components specifically described include a filter cartridge with preferred characteristics for interacting with a filter housing, and a filter housing with preferred characteristics for convenient installation. the methods of assembly and use are also characterized.
公开号:BR112013034074B1
申请号:R112013034074-6
申请日:2012-06-29
公开日:2021-02-23
发明作者:Thomas Lundgren；Veli Kalayci；Paul Peterson；Daniel Adamek；Wade Mosset；Robert Wood；Gert Willems
申请人:Donaldson Company, Inc；
IPC主号:

专利说明:

[001] The present application is being filed on June 29, 2012, as an international PCT patent application in the name of Donaldson Company, a US national commercial company, applicant for the designation of all countries except the USA, and Thomas Lundgren, an American citizen, Veli Kalacyi, Turkish citizen, Paul Peterson, Daniel Adamek, Richard Osendorf, Wade Mosset, all American citizens, and Robert Wood and Gert Willems, both Belgian citizens, applicants for the US designation only. Reference to related order
[002] This application includes, with publications, the disclosure of U.S. SN 61 / 503,008, filed on June 30, 2011. The full disclosure of USSN 61 / 503,008 is incorporated herein by reference. This application also includes the disclosure of USSN 61 / 665,501, filed on June 28, 2012. The full disclosure of USSN 61 / 665,501 is incorporated herein by reference. A priority claim for each USSN 61 / 503,008 and 61 / 665,501 is made to the appropriate extent. Field of revelation
[003] The present disclosure relates to arrangements, systems, components, characteristics and methods for separating hydrophobic fluids (such as oils), which are trapped as aerosols, from gas flows (for example, air flows). In addition, the arrangements also provide filtration of other contaminants as carbon material from gas streams.The arrangements are typically used to filter crankcase ventilation gases from engine systems. also provided. Background
[004] Certain gas flows, such as engine oil pass gases (crankcase vent filter gases from engine crankcase) carry substantial amounts of trapped oil (s) (liquid) in the ) same (s) as aerosol. Often, the oil (liquid) droplets comprised in the aerosol are comprised in the size of 0.1 - 5.0 microns.
[005] In addition, such gas streams also carry substantial amounts of fine particulate contaminants such as carbon contaminants. Such contaminants often have an average particle size in the range of approximately 0.5 - 3.0 microns.
[006] In some systems, it is desirable to bleed such gases into the atmosphere. In general, it is preferred that before the gases are bled into the atmosphere, they can be cleaned of a substantial portion of aerosol and / or organic particulate contaminants therein.
[007] In other instances, it is desirable to direct the flow of air or gas into equipment. When this is the case, it may still be desirable to separate aerosolized liquids and / or particulate materials from the flow during circulation, to provide such benefits as: reduced negative effects on downstream equipment; improved efficiency; recapture of oil otherwise lost; and / or address environmental issues.
[008] Improvements in crankcase ventilation filter systems, (ie, oil-pass ventilation filter or crankcase gas filtration systems) built for application with a variety of engine equipment systems are generically pursued.
[009] Here improved features for such arrangements are provided for convenience of installation, use, assembly and / or operation. summary
[010] In accordance with the present disclosure, crankcase ventilation filter assemblies, characteristics, components and methods of assembly and use are provided. The features and methods described provide convenient mounting; efficient use of space; and / or preferred operation.
[011] There is no specific requirement that a crankcase ventilation filter assembly, component, feature, method of use or method of assembly includes all the features and techniques disclosed here, to obtain any advantage. In general, the selected use of the characteristics and / or methods, without the use of others, can still lead to an advantageous system.
[012] In an example system featured here, the cartridge is configured to provide advantageous assembly, and for use with efficient use of the media pack positioned therein, in relation to the vertical space available for installation. The filter cartridge can also be supplied which includes features suitable for rotational indexing with a housing base component, and / or a service cover component. Brief description of the drawings
[013] Figure 1 is a schematic side elevation view of a first crankcase ventilation filter arrangement or assembly in accordance with the present disclosure.
[014] Figure 2 is a second schematic side elevation view of the assembly in Figure 1; generically the view of figure 2 being towards a side opposite that of figure 1.
[015] Figure 3 is a third schematic side elevation of the assembly shown in figure 1, generally the view being taken towards the left side of figure 1.
[016] Figure 4 is a fourth schematic side elevation view of the assembly shown in figure 1, generally the view being taken towards the right side of the assembly as shown in figure 1;
[017] Figure 5 is a schematic top plan view of the assembly shown in Figure 1.
[018] Figure 6 is a schematic bottom plan view of the assembly shown in Figure 1; in figure 6 interrupted transverse lines showing a mounting center and a location of a central mounting axis.
[019] Figure 7 is a schematic cross-sectional view taken generally along line 7-7; figure 5.
[020] Figure 8 is a schematic cross-sectional view taken generally along line 8-8; figure 5.
[021] Figure 9 is a schematic top perspective view of a base housing component of the assembly shown in Figures 1-8; in figure 9, the housing base component being shown free of certain characteristics normally attached to it as a component of an optional regulating valve assembly.
[022] Figure 10 is a schematic top perspective view of a service cover or cover assembly for the crankcase ventilation filter assembly shown in figures 1-8.
[023] Figure 11 is a schematic top perspective view of a working filter cartridge component visible inside the assembly shown in figures 1-8.
[024] Figure 12 is a schematic detailed perspective view of the housing base component of Figure 9; in figure 12 the view representing the base component of figure 9 with certain characteristics of an optional regulating valve assembly normally mounted thereon shown in detailed view.
[025] Figure 13 is a schematic side elevation view of the base component of Figure 9.
[026] Figure 14 is a schematic top plan view of the base component shown in Figure 9.
[027] Figure 15 is a schematic side cross-sectional view taken generally along line 15-15, figure 14.
[028] Figure 16 is an enlarged schematic fragmentary view of an identified portion of Figure 15.
[029] Figure 17 is a schematic top plan view of the filter cartridge component shown in Figure 11.
[030] Figure 18 is a schematic cross-sectional view of the filter cartridge component of figure 11, taken generally along line 18-18, figure 17.
[031] Figure 19 is a first schematic detailed perspective view of the filter cartridge component of Figure 11.
[032] Figure 20 is a second schematic detailed perspective view of the filter cartridge component shown in Figure 11.
[033] Figure 21 is a schematic bottom plan view of the filter cartridge component shown in Figure 11; in figure 21, transverse lines indicate a center and thereby a location of a central cartridge axis.
[034] Figure 22 is a schematic side elevation view of a preform component of the filter cartridge component shown in Figure 11.
[035] Figure 23 is a schematic top plan view of the component shown in Figure 22.
[036] Figure 24 is a schematic cross-sectional view of the component represented in figures 23 and 24, taken generally along line 24-24, figure 22.
[037] Figure 25 is an enlarged schematic cross-sectional view taken generally along line 25-25, figure 22, in figure 25, transverse lines indicating a center and thereby a location of a central geometric axis;
[038] Figure 26 is a schematic top perspective view of an upper part component of the filter cartridge shown in Figure 11.
[039] Figure 27 is a schematic top plan view of a filter cartridge including the component shown in Figure 27; in figure 27, transverse lines showing a center and thereby a location of a central cartridge geometric axis.
[040] Figure 28 is a schematic cross-sectional view of the component in Figure 26, taken generally along 28-28, Figure 6.
[041] Figure 29 is an enlarged fragmentary schematic view of an identified portion of Figure 28.
[042] Figure 30 is a schematic top perspective view of the top part component of Figure 26.
[043] Figure 31 is a schematic side elevation view of an upper cover component of the cover assembly shown in figure 10.
[044] Figure 32 is a schematic top plan view of the component shown in Figure 35.
[045] Figure 33 is a schematic cross-sectional view of the component shown in figure 35, taken generally along line 33-33, figure 32.
[046] Figure 34 is a schematic side elevation view of a mounting ring component of the cover assembly shown in Figure 10.
[047] Figure 35 is a top plan view of the mounting ring component shown in Figure 38.
[048] Figure 36 is a schematic cross-sectional view of the ring component of figures 34 and 35, taken generally along line 36-36, figure 35.
[049] Figure 37 is a schematic detailed perspective view of the cover assembly shown in Figure 10.
[050] Figure 38 is a schematic view of an engine and air induction system using a crankcase ventilation filter assembly in accordance with the present disclosure.
[051] Figure 39 is a schematic top perspective view of a second embodiment of a crankcase ventilation filter assembly in accordance with the present disclosure.
[052] Figure 40 is a first schematic side elevation of the assembly shown in figure 38.
[053] Figure 41 is a schematic top plan view of the assembly shown in Figures 39 and 40.
[054] Figure 42 is a schematic cross-sectional view taken generally along line 42-42, figure 40.
[055] Figure 43 is a fragmentary enlarged schematic view of an identified portion of Figure 41.
[056] Figure 44 is a schematic cross-sectional view taken generally along line 44-44, figure 41; the view of figure 44 is generally a right angle to the view of figure 42.
[057] Figure 45 is a fragmentary, schematic view, enlarged from an identified portion of Figure 43.
[058] Figure 46 is a schematic top perspective view of the assembly of figures 39 and 40, with an access cover removed.
[059] Figure 47 is a second schematic side elevation view of the assembly of figures 39 and 40.
[060] Figure 48 is a third schematic side elevation view of the assembly shown in Figures 39 and 40.
[061] Figure 49 is a top, schematic, enlarged perspective view of a filter cartridge component usable in the assembly of figures 39-48.
[062] Figure 50 is a schematic top plan view of the filter cartridge shown in Figure 49.
[063] Figure 51 is a first schematic side elevation of the filter cartridge component shown in figure 50.
[064] Figure 52 is a schematic cross-sectional view taken generally along line 52-52, figure 51.
[065] Figure 53 is a second side elevation view, schematic of the filter cartridge component of figure 49; the view of figure 53 being taken generally at a right angle to the view of figure 51.
[066] Figure 54 is a schematic cross-sectional view taken generally along line 54-54, figure 53.
[067] Figure 55 is a schematic detailed view of the assembly in Figure 39.
[068] Figure 55a is a detailed, schematic, enlarged view of a portion of the housing base component of Figure 55.
[069] Figure 56 is a schematic top perspective view of a base housing component of the assembly of Figures 39 and 40.
[070] Figure 57 is a schematic top plan view of the housing base component of Figure 55.
[071] Figure 58 is a second schematic top view of the housing base component of Figure 56.
[072] Figure 59 is a schematic bottom perspective view of a first central component of an access cover usable in the assembly of Figure 39.
[073] Figure 60 is a schematic top perspective view of a second perimeter ring component of an access cover usable in the assembly of Figure 39.
[074] Figure 61 is a schematic top perspective view of a filter cartridge support component usable in the filter cartridge of Figure 49.
[075] Figure 62 is a fragmentary, enlarged, schematic cross-sectional view of a portion of the assembly in Figure 39.
[076] Figure 63 is a schematic cross-sectional view taken generally along line 63-63, figure 40.
[077] Figure 64 is a fragmentary, enlarged schematic view of an identified portion of Figure 63. Detailed Description I. GENERAL CHARACTERISTICS AND ISSUES
[078] As previously indicated, the present disclosure refers, in general, to systems, arrangements, characteristics, components and methods referring to crankcase ventilation filter assemblies. The assignee of this application is Donaldson Company, Inc. of Bloomington, MN. As such, the order partly relates to other crankcase ventilation filter assemblies from Donaldson Company, Inc., including, for example, those described in WO 2007/053411; WO 2008/147585; WO 2008/115985; W0 2005/157251; and WO 2009/018454; whose full disclosures are individually incorporated herein by reference.
[079] The present disclosure refers to certain characteristics usable for crankcase ventilation filter assemblies that can provide an advantage over one or more of: assembly operation; assembly assistance; component operation and / or assistance; and / or component or assembly generation, as described here. There is no specific requirement that an assembly, component, feature, arrangement, system or method be applied with all the features detailed as described here, to obtain any benefit in accordance with the present disclosure. This will be evident from the descriptions of the present invention, as well as a general understanding of the principles described.
[080] As will be learned from the detailed description below, many of the features represented in this assembly have been developed, in part, for applications to enhance desirable crankcase ventilation filter mounting effects and characteristics even when the installation location has a vertical dimension. limited for installation or when it is desirable to use available vertical space more efficiently. Indeed, the example systems of the present invention are described, and example dimensions are provided. However, there is no specific requirement that an assembly be built according to the specific dimensions provided in the examples, nor is there a requirement that the principles only apply to assemblies configured for installation in similar limited vertical space systems. However, many of the features depicted and described are particularly advantageous for applications involving limited vertical installation space and / or taking advantage of the vertical dimension of the available space.
[081] Here, in some cases a mounting location with a limited vertical dimension can be characterized as a “vertically challenged” application situation. Again, certain of the techniques described here are particularly well suited for “vertically challenged” installation situations.
[082] In the present disclosure, two modalities are represented, the first modality in figures 1-37 and a second modality in figures 39-64. In general, identified characteristics of the first modality can be incorporated into the second modality; and identified characteristics of the second modality can be incorporated into the first modality. This will, in general, be understood by a person skilled in the art based on the following descriptions of each modality.
[083] General characteristics and operation of an example crankcase ventilation filter assembly can be understood by reference to figures 1-8. Thus, attention is first directed to these figures.
[084] Reference numeral 1, figure 1, generically represents a crankcase ventilation filter assembly including example features in accordance with the present disclosure. The assembly 1 can generally be characterized as comprising a housing 2 having: a gas flow inlet arrangement 3; a filtered gas flow outlet arrangement 4; and a liquid drain outlet arrangement 5.
[085] In typical operation, gas containing liquid particulate material in it (and another contaminant) is directed into assembly 1 through the gas flow inlet arrangement 3. In assembly 1, the gas flow is directed through of a filter cartridge component 20 (not shown in figure 1) discussed below. In the filter cartridge component 20, the liquid component is coalesced and drained and another contaminant (such as solid particulate material) tends to become trapped in the middle of the filter. The liquid component can drain downwards, for example, under the influence of gravity, to drain the outlet arrangement 5 and outwards from the housing 2. Evidently, the drainage of liquid out of the filter cartridge 20 and through the arrangement of liquid drain outlet 5, can load part of the solid particulate component of the medium. The filtered gases leave assembly 1 through the filtered gas flow outlet arrangement 4. The filtered gases can be bled into the atmosphere or, in some cases, can be directed to another component, such as an induction or inlet system. engine air.
[086] It is observed that for the specific assembly 1 shown, the gas flow inlet arrangement 3, the gas flow outlet arrangement 4 and the liquid drain arrangement 5 are individually represented as single openings in tubes of unique flow. Although this is typical, alternative arrangements are possible in which one or more of the gas flow inlet arrangement, gas flow outlet arrangement and / or liquid flow outlet arrangement is provided as a multiple opening arrangement and / or multiple tube.
[087] Typical assembly 1 includes a housing 2 configured so that when installed in the equipment for use, the liquid drain outlet 5 is directed downwards. The liquid, typically oil or similar material that drains through outlet 5, can be directed to a reservoir or back into the equipment as desired. Valve arrangements can be used to control liquid flow from the liquid drain outlet 5 to the equipment as desired.
[088] Still with reference to figure 1, the specific assembly 1 shown includes two optional gas valve assemblies in it. An optional first gas valve assembly, generically indicated 10, is a regulating valve assembly, which, in the example shown, regulates gas flow to the gas flow outlet arrangement 4. In 11, a cover for the assembly regulating valve 10 is shown in the example having a drawing thereon. The design is a source indication mark of Donaldson Company, Inc., the assignee of this application, for various equipment and services. It is observed that the design is typically used in association with the “Spiracle” brand, another Donaldson source indication mark.
[089] At 14, an optional pressure release valve assembly or vent valve assembly is shown. The assembly 14 is generally configured to open quickly and thereby allow bleeding of gases from inside the housing 2, to protect against an excess pressure condition in the housing 2. Specific characteristics of the bleed valve assembly 14 are further discussed below .
[090] Still with reference to figure 1, the example housing 2 shown can be characterized as generally comprising two components: base or bottom housing component 16; and service cover (component or cover assembly) 17. In general, during use, housing 2 is mounted on the equipment with which assembly 1 is to be used, for example, a vehicle or other equipment. Typically, assembly 1 is assembled by having the housing base component 16 fixed in place on the equipment. The specific housing 2 shown is shown with mounting flanges 18 positioned on the housing base component 16, to provide such mounting, although alternate mounting approaches are possible.
[091] The service cover 17 is generally removably mounted on the housing base 16, to allow service access to the interior of the housing 2. The service access provides installation and / or removal of a filter cartridge arrangement positioned inside 20 (not shown in figure 1) as discussed below.
[092] Still with reference to figure 1, the specific housing 2 represented is provided with a gas flow tube arrangement directed downwards (inlet), top, 3x like the gas flow arrangement (inlet) 3. The arrangement inlet tube 3x, in the example shown, comprises a portion of a cover member 91 of the access cover 17, as discussed below, although alternatives are possible.
[093] In figure 1, the housing 2 is configured with gas the flow outlet arrangement 4 and the liquid drain outlet arrangement 5 positioned on the housing base 16. Since the housing base 16 is generally the part bottom of assembly 1, drain outlet 5 will typically be positioned on that component. The positioning of the gas flow outlet arrangement 4 in the housing base arrangement 16 is advantageous for the specific assembly shown and the flow of gas therethrough, as will be understood from further discussion below.
[094] It is observed that for the specific assembly 1 shown, the housing base 16 comprises a single integral base element. In alternative applications of principles according to the present disclosure, the base 16 could comprise a side wall section and a removable bottom section, having similar general characteristics.
[095] Although the general location for the inlet flow arrangement 3, outlet arrangement 4 and liquid drain arrangement 5 is typically as shown, alternative locations are possible with some of the principles described here. For example, in some systems, inlet arrangement 3 may be provided on the housing base with the outlet arrangement on the service cover, or both may be provided on the housing base or on the service cover. (in addition, they can be targeted differently). However, especially for certain vertically challenged applications, the represented configuration has some advantages, for reasons that will be evident from the descriptions with the present invention.
[096] In addition, with reference to figure 1, for the specific assembly 1 shown, the direction of gas flow inlet, through inlet 3, and the direction of gas flow outlet through outlet 4 are generally perpendicular ( orthogonal) to each other. This will be typical, although alternatives are possible.
[097] In figure 2, a side elevation view of the crankcase ventilation filter assembly 1 is provided, broadly opposite the view in figure 1. Mounting flanges 18 can be seen comprising a portion of the configured 18x mounting shim arrangement for mounting on a portion of the equipment with which mount 1 is to be used. Of course, the 18x mounting shim arrangement can be configured in a variety of specific arrangements. For example, it can be configured in a customized way to engage with a selected portion of equipment for use; the 18x mounting wedge arrangement is represented merely as an example. It is noted that in some alternative applications, the housing base 16 can be supplied without a mounting shim arrangement, with fixation to the equipment alternatively provided, for example, through a fixable mounting strip or similar structure.
[098] It is noted that in some cases, assembly 1 will be mounted on the engine for the equipment in question. The 18x mounting shim arrangement can be configured for convenient mounting in this way.
[099] With reference to figures 1-3, the assembly 1, and in particular the housing 2 and an internally received cartridge 20 (not seen in figures 13) can be characterized as having a central assembly, housing, cartridge or geometric axis of component X. The geometric axis X is shown in figures 1-3, and is generally centrally located through each of the cover assembly 17, base 16, thereby the general housing 2 and an internally received filter cartridge 20 discussed below. The X geometric axis is generally vertically oriented, in typical use.
[0100] In figure 3, a third side elevation view of assembly 1 is shown generically taken towards the left side of figure 1. Figure 4, a side view opposite that of figure 3 is provided.
[0101] Attention is now directed to figure 5. Figure 5 is a top plan view of assembly 1. In figure 5 it can be seen that the example top cover or service cover 17 has an outer perimeter 17p and that the inlet 3x is centrally positioned in relation to the outer perimeter 17p of the service cover 17. By “centrally positioned” in this context, it means that the vertical inlet tube 3x is positioned centered on a central geometric axis (vertical) X (figures 1 -4) defined where lines 7-7 and 8-8 intersect in X, figure 5.
[0102] In more general terms, the access coverage or service coverage 17 has an external perimeter 17p. The "center" of the outer perimeter will generally be a place where a line along a longer dimension of that perimeter, through service coverage 17, is intersected by a line perpendicular to halfway along that longer line. For a circular perimeter, of course, the two lines could be a pair of orthogonal (perpendicular) diameter lines. In general, the location where the two lines intersect will be characterized as the “center” of the service coverage 17 and perimeter 17p. In a typical application, this center will also correspond to a central (vertical) X axis of assembly 1 and a service cartridge 3, as discussed below. Here, when it is said that the 3x inlet tube is positioned "centrally" in the access cover 17, this means that it is centered around the center identified above. When it is mentioned that the 3x inlet tube is positioned "centrally" in assembly 1, it means that it is centered on the center cartridge X axis or the housing X central axis is defined below. For the specific assembly 1 shown, the inlet tube 3x is centrally positioned with respect to each of: the outer perimeter 17p of the service cover 17, a central axis of cartridge X, and a central axis of housing X. As discussed below, many of the principles of the present application can be applied in an arrangement in which the 3x inlet tube is not positioned centrally, that is, when it is positioned "eccentrically". In some arrangements, this can provide an advantage, and features can be modified to accommodate this, as discussed below.
[0103] The specific tube 3x shown, has an inner definition that is circular in cross section. This will be typical, but it is not specifically required in all applications of the many of the principles described in accordance with the present disclosure.
[0104] It is noted that many of the principles of the present disclosure can be applied when the air flow inlet arrangement 3, that is, the gas flow tube 3x through the cover assembly 17 is eccentric, axially positioned on the geometric axis central X, as opposed to being centrally positioned. However, for the specific assembly shown, the central positioning provides some accommodation and advantage, discussed further below.
[0105] In figure 6, a bottom plan view of assembly 1 is shown. With reference to figure 6, it can be seen that the base housing component 16, except for the component positioned therein, and some recesses in 16j (discussed below) generically have a circular outer perimeter 16p as well. The liquid outlet drain 5 is typically centrally positioned, as shown. It is observed that although alternatives are possible, typically, a central (non-eccentric) position around the center X will be typical and preferable for the drain outlet arrangement 5, as will be understood from further discussion below. Still with reference to figure 6, it is observed that the specific liquid outlet arrangement 5 represented comprises a tube 5x having a generally circular interior definition, in cross section. Although this format is not required, it will be typical.
[0106] Attention is now directed to figure 7, a cross-sectional view taken generally along line 7-7, figure 5. With reference to figure 7, housing 2 can be generically understood to define the interior of housing 2i . The operating filter cartridge 20 is positioned in the housing 2 or interior of the housing 2i. The filter cartridge 20 generally comprises filter means 21 positioned surrounding an open filter interior 22, positioned between, and typically extending between, opposite end pieces of cartridge 23, 24 and defining the central cartridge axis X (in the example also corresponding to a central axis for housing 2 and assembly 1).
[0107] Here, the term “operant” when used in association with filter cartridge 20, is intended to refer to a filter cartridge 20 that can be removed and replaced in housing 2. Thus, filter cartridge 20 is a service component. Typically, the filter cartridge 20 will be removed and will be replaced during service operation for the equipment involved, since the filter cartridge 20, in time, will load the material. Of course, assistance in some cases may involve renewal, but it will typically be relocation.
[0108] As noted above, the specific filter medium 21 depicted is positioned around a center cartridge X axis. The X axis is generally a vertical axis extending through a center around which the medium 21 is. positioned, and also generically through a center defined by the base housing component 16.
[0109] Referring to figure 7, the operation of draining liquid and inlet gas flow can be understood. As gas enters downwards directed into the inlet tube 3x, it is directed into the cartridge 22. Then, it is directed through the means 21 into the annular space of filtered gas 25 which, for the represented system, is a portion of the housing interior 2i surrounding the cartridge 20. The annular space 25 is an annular space of filtered or cleaned gas flow in flow communication with the outlet arrangement 4, figure 1.
[0110] Coalesced liquid in the medium 20 generally drains down to the bottom of the housing 2b (which, for the housing 2 shown, comprises the bottom 16b of the base arrangement 16) and out through the drain arrangement 5.
[0111] As described so far, assembly 1 is configured to flow “in to out” through filter cartridge 20, during filtration. Therefore, it means that the gas flow through the medium 21, with filtration, is generally from an interior 22 of the cartridge 20 to a region outside the cartridge 20. Many of the techniques described here can be applied in applications in which a opposite “out-in” flow during filtration is involved. This is discussed briefly below.
[0112] In general, the annular space 25 is in flow communication with the orifice 35 (figure 12) in a side wall 16s of the base 16. The orifice 35 (not visible in figure 7) is configured with the outlet 4 and the regulating valve assembly 10 therein, as further discussed below.
[0113] In figure 8, a second cross-sectional view of assembly 1, taken generically along line 8-8, figure 5, is shown. In figure 8, the cover 11 of the regulating valve assembly 10 can be seen in position in the orifice 35.
[0114] Still with reference to figure 8, in 30 an opening arrangement is represented through the extreme piece 23, in communication with the open interior 22. The opening arrangement 30, in part, allows the case of pressure accumulation in the region from inlet 3 and interior 22, to a potential excess pressure condition, that pressure (through vent 30) is communicated to the bleed valve arrangement 14 for release. Further routes for bleeding gas through end piece 23 are provided. This is further discussed below.
[0115] Still with reference to figure 8, at 31, an optional inertial impaction arrangement 31 is provided at the inlet 3x at an internal end of the inlet tube 3x, to facilitate liquid collection. Advantages of such an optional inertial impaction arrangement 31 will be understood from the additional discussion below. In general, as gases are directed through the 3x inlet tube, they are directed towards the inertial impaction plate 31p, and a portion of liquid carried by the gases can collect on a surface greater than 31u of the inertial impaction plate 31p as droplets , which then fall downwards and flow into a height of liquid into the medium 31, without necessarily redispersing as an aerosol, advantageously. Again, this is described in further detail below. (Note that the second modality in figures 39-64 does not represent the use of such an inertial impact arrangement. However, an inertial impact arrangement of the type shown in figure 8 can be adapted for the last mentioned modality). II. THE MAIN ASSEMBLY COMPONENTS; ACCOMMODATION BASE 16; SERVICE COVERAGE 17; OPERATING FILTER CARTRIDGE 20 A. GENERAL FEATURES - FIGURES 9 - 11
[0116] In figure 9, a top perspective view of the housing base component 16 is shown. It can be seen that the housing base component 16 is shown in figure 9, without selected portions of the regulating valve assembly 10 positioned therein. The specific portion of the housing base component 16 depicted will generally comprise a unit that can (if desired) be shaped as a single, single, plastic construction. This will be typical for a preferred construction according to the present disclosure.
[0117] Again, it is observed that the assembly of regulating valve 10 is an optional component. If the housing base component 16 were part of an assembly that does not include such a regulating valve assembly, or includes an alternately mounted regulating valve assembly, the housing base component 16 could be formed without those selected characteristics of the valve assembly regulator 10 represented therein.
[0118] In figure 10, the service cover or service cover assembly arrangement 17 is viewable in a top perspective view. In figure 1, the filter cartridge 20 is shown in the top perspective view.
[0119] Assembly 1 can be assembled for use by installing the cartridge 20 (figure 11) on the housing base component 16 (figure 9) and positioning the service cover 17 in place on an upper end 16e of the base component housing 16 (figure 9). (It is noted that typically the housing base component 16, figure 9, will have been provided with remaining components of the regulating valve assembly 10 therein before the cartridge 20 and service cover assembly 17 are positioned).
[0120] From the descriptions detailed below, it will be understood that many of the features described here not only refer to the configuration for good space utilization and efficient and effective filter operation, but also to help ensure that the cartridge that is positioned in an assembly according to the present disclosure is a cartridge suitable for that assembly and is properly positioned and retained for proper use.
[0121] Inlet arrangement 3, outlet arrangement 4 and drain outlet arrangement 5 can be fixed in conduits suitable for gas flow and liquid flow as appropriate. During a typical service operation, for a complete installed assembly, there is no specific need to separate (detach) hose or tubing from assembly 1, during service, depending on the nature of the attached tubing. Indeed, typically the base housing component 16 remains in place and does not move; and if the tubing attached to the inlet arrangement 3 is flexible enough, the access cover 17, as will be understood from further discussion below, can be removed from the housing base 16 without separating the tubing from the inlet 3. B. THE ACCOMMODATION BASE 16 IN GENERAL - FIGURES 12-16
[0122] Attention is now directed to figure 12. Figure 12 is a detailed perspective view of the housing base component 16. In figure 12, the component selected from the optional regulating valve assembly 10 is shown and it is this component that is shown in detailed view.
[0123] With reference to figure 12, the housing base or base component 16 is represented in perspective view, as comprising side wall 16s, bottom 16b with drain outlet arrangement 5 on it, open upper end 16e and arrangement of drain 18x mounting chock.
[0124] In figure 13, a side elevation view of the base component 16 is provided, taken towards the 18x mounting shim arrangement. Also visible in figure 13, is the lock projection arrangement 36, and an external surface of the adjacent side wall 16s, and spaced from the upper edge 16e. Also around an upper portion of the side wall 16s, between the lock projection arrangement 36 and the open end 16e, a thread arrangement 16t is provided. As will be understood from the discussion below, the specific assembly 1 shown is configured so that the service cover arrangement 17 is threadedly mounted to the housing base 16 in the thread arrangement 16t. Alternative methods of connection are possible, as shown in the form of figures 39-64, but a screw connection is convenient here. (The unthreaded arrangement of figures 39-64 can be adapted to the modality of figure 12). As will be understood from the further discussion below, the lock projection arrangement 36 is positioned to be engaged by a service cover portion 17 in a manner that inhibits undesirable unlocking during use due to the vibration of the equipment.
[0125] With reference again to figure 12, in 4 the gas flow outlet arrangement is represented, in communication with the orifice 35. The orifice 35 is mounted in, and typically molded integral with the side wall 16s. Positioned inside the orifice 35 is provided the conduit ring 38, also typically molded integrally with the housing base 16. An interior 38i of the ring 38 is in direct flow communication with the interior 4i of the gas flow arrangement 4. This is, for the example assembly 1 shown, for gases to reach outlet 4, they must flow into and through the interior 38i of ring 38. Alternative constructions, however, are possible.
[0126] In figure 12, at 40, a diaphragm valve element is represented. In 41 a bias arrangement is represented, in the example shown configured as a spiral spring 41s. When assembled, the cover 11 is positioned on, and fixes, the diaphragm 40 over the orifice 35, closing the orifice 35. The diaphragm 40 is supported spaced from the end 38 and the inner ring 38 by the prop element 41.
[0127] The operation of the regulating valve arrangement 10 can be understood from the following example. Assume that the outlet flow arrangement 4 directs gas flow to an air cleaner or engine air intake. The fluctuation demands of the engine will fluctuate the amount of drag in the gas in the outlet arrangement 4. It may be undesirable to transfer such negative pressure (or drag) to assembly 1 and cartridge 20. Thus, the regulating valve 10 under the circumstance will tend to closed drag. More specifically, if the engine drag in outlet arrangement 4 is sufficient, that drag will tend to propel diaphragm 40 towards edge 38e, inhibiting gas flow and inhibiting such a high vacuum condition from being transferred through housing 2 On the other hand, if the gas flow from the engine is high, in relation to the drag on the pipe 4, the propensity arrangement 41 will propel the valve element 4 away from the edge 38e, opening the gas flow. The bias arrangement 41 and valve arrangement 40 can be configured so that if the drag in the outlet tube 4 is sufficiently high, the diaphragm 40 will completely close the opening 38e. This is a matter of preference depending on the expected conditions and operation.
[0128] The general question, then, is that for gases to reach tube 4, they must pass over the edge 38e and into the interior 38e of tube 38. It is this flow that is regulated by valve arrangement 10 including the diaphragm valve 40, sometimes characterized as a rolling hinge valve.
[0129] Still with reference to figure 12, it is observed that a pressure fitting can be used for the cover 11, the pressure fitting comprising openings 11a in the cover 11 that enclose projections 35p in the orifice 35. This will fix the diaphragm 40 and propensity arrangement 41 in place.
[0130] Regulating valve arrangements have been used with respect to crankcase ventilation filter assemblies previously, and examples are shown in WO 2007/053411; WO 2008/147585; WO 2008/115985; and WO 2009/018454, incorporated herein by reference.
[0131] In figure 13, again, a side elevation view of the housing base 16 is shown. The view is taken generally towards the 18x mounting plate. Previously selected features that can be viewed include: side wall 16s, upper end 16e with threads 16t adjacent to it; locking arrangement 36, mounting plate 18x with flanges 18; and bottom 16b with outlet 5 (as a 5x tube). The central geometric axis of the housing X, which also corresponds to a central cartridge geometric axis, is represented, directed through the bottom drain outlet 5, and for the example shown, the drain outlet 5 is centered on the geometric axis X. The outlet arrangement 4, previously discussed, is also represented.
[0132] In figure 14, a top plan view of the housing base component 16 is shown. The view in figure 14 is generally of the housing base component 16, without assembly of the separable components of the regulating valve assembly 10 therein. Thus, the view in figure 14 is of the base 16 as it can be molded as a single integral part.
[0133] With reference to figure 14, selected external features of the housing base component 16, previously described that are viewable include: orifice 35; exit 4; lock arrangement 36; 18x mounting pad with flanges 18 and side wall 16s.
[0134] Also in figure 14, it can be seen that the specific housing base component 16 represented includes only a lock projection 36x as a lock projection arrangement 36, figure 12. It is observed that in some applications of the techniques described here, the lock projection arrangement 36 may include two or more lock projections 36x.
[0135] Still with reference to figure 14, it can be seen that for the example arrangement shown, the housing base component 16 generally includes the side wall 16s which defines a generally circular interior 16i. The circular interior 16i extends around and is typically concentrically positioned in relation to the central geometric axis X, figure 13, that a vertical geometric axis extending through housing 2 and cartridge 20. Alternatives are possible.
[0136] In figure 14, an inner surface 16z of the bottom 16b can be seen. The inner surface 16z of the bottom 16b includes a plurality of radial ribs 41 thereon, which, in part, provide resistance to the lower surface 16z.
[0137] In figure 14, in 5th, an opening for the bottom drain arrangement 5, figure 1, is shown. Positioned adjacent to the opening 5 for drain 5, figure 14, is a projection arrangement 44. The projection arrangement 44 projects generally from a portion of the bottom surface 16z in a direction away from the drain 5 and generally towards the upper end 16e from base 16; that is, towards the service cover 17, figure 1. The projection arrangement 44 is configured to interact with the filter cartridge operating 20 in the modes discussed below. For the specific arrangement shown, the projection arrangement 44, is an element of a (first) receiver / projection arrangement, of which another element is positioned on the cartridge 20. For the specific assembly 1 shown, the projection arrangement 44 is (optionally) ) also part of an indexing arrangement of rotational orientation (or alignment) from cartridge to housing component (or housing component to cartridge), which ensures that cartridge 20 is installed in a selected rotational orientation relative to the base component of housing 16. This helps to ensure that cartridge 20 is a suitable cartridge for assembly and is properly oriented.
[0138] Also visible in figure 14, are tongues projected radially inward 16k, formed by recesses 16j, figure 12. The tongues 16k are oriented adjacent to bottom 16z, and will match selected portions of a cartridge 20 as discussed below.
[0139] Attention is now turned to figure 15, a cross-sectional view taken generally along line 15-15, figure 14. Here, the projection arrangement 44 can be seen projecting towards the end 16e and, in the assembly 1, figure 1, towards the access cover 17. It is observed, with reference to figure 14, that in figure 15, half of the projection arrangement 44 is represented, the opposite half typically being a mirror image. Again, features of projection arrangement 44 configured for interaction with cartridge 20, will be better understood from the discussion below after cartridge 20 is discussed.
[0140] Still with reference to figure 15, other characteristics visible in the cross section, as previously described, include: 16t threads; orifice 35; inner ring 38; 18x mounting shim; lower ribs 41, projection 16k; and drain outlet 5o. It can be seen that the ribs 41 create flow spaces between them for drain flow under a received cartridge 20, in use.
[0141] Figure 16 is a fragmentary cross-sectional view of a portion of Figure 15. Rib 35 is shown positioned in hole 35 to engage a portion of diaphragm ring 40, Figure 12, to facilitate sealing. C. THE FILTER CARTRIDGE IN GENERAL, FIGURES 11 AND 17-30
[0142] Attention is now turned to figure 11, in which the filter cartridge 20 is represented in a top perspective view. The filter cartridge 20, as previously indicated, generally comprises medium 21 positioned in extension around the open filter interior 22. Medium 21 is positioned between first and second opposite end pieces 23, 24. Medium 21 is generally configured to receive gases directed through it, and allow coalescence of liquid in medium 21 with retention of a certain contaminant. A variety of media suitable for liquid / gas separation can be used, and the choice of one for the application of interest is not critical to many of the specific characteristics described here. Examples of usable means include those described in WO 2006/084282; WO 2007/053541; WO 2008/115985; and WO 2006/91594 incorporated herein by reference.
[0143] The specific cartridge 20 represented is configured to be vertically oriented when installed. This orientation is typically with the first end piece 23 oriented as an upper end piece and with the second end piece 24 generally oriented as a lower or lower end piece.
[0144] With reference to figure 11, attention is directed to the first (upper) end piece 23. The first end piece 23 includes an outer perimeter region 23p, which, in the example shown, comprises a housing sealing element 50. The term "housing seal" and variants thereof as used herein, is intended to refer to a sealing element positioned on an operating cartridge 20 such that when the cartridge 20 is installed in a housing 2, the housing sealing element 50 is positioned and configured to form a seal with a portion of a housing 16. In addition, a "housing seal" as the term is used here, is a seal that is releasable, that is, that separates from the seal when the cartridge 20 is removed from housing 2, without damage to housing 2 or sealing element 50.
[0145] The specific housing sealing element 50 shown is shown positioned on the first end piece 23, oriented as a perimeter housing seal. The specific housing seal 50 shown is configured to form a seal oriented downwardly on the edge 50e with a portion of the housing 2 being installed. In particular, and with reference to figure 15, the housing base 16 includes, on the side wall 16s, an upper sealing shoulder 16x spaced down from the end 16e. The shoulder 16x receives pushed down axially against it, the lower end 50e of the sealing element 50, when the cartridge is installed. The sealing occurs by the downward force (axially oriented) in the seal 50 against the shoulder 16x. To facilitate the sealing, the shoulder 16x includes a rib 16h on it, figure 15 that will be pressed into the sealing element 50.
[0146] Such a seal is sometimes mentioned with axially oriented seal, since the sealing forces are in the longitudinal direction of the extension of the central geometric axis X. Such seals are sometimes referred to as “tightening” seals, since the sealing occurs by squeezing the sealing element 50 between the housing components. In the cross-sectional view of figures 7 and 8, the sealing element 50 can be seen as pressed down against the shoulder 16x to cause the described sealing. The 16h ribs are visible. Also, a portion 17z of access cover 17 oriented to push down the sealing element 50, as the cover 17 is assembled, is visible to facilitate sealing. (It is noted that the modality of figures 1-37 can be adapted to use a radially oriented housing seal arrangement, for example, analogously to the modality of figures 39-64, or with alternative configurations. A radially directed seal is configured with sealing forces, generally directed towards or away from the central geometric axis X).
[0147] With reference to figure 15, it is observed that the shoulder 16x is surrounded by a flange oriented upwards 16r. The flange 16r has a threaded outer surface. The inner portion of the flange 16r is provided with optional notches or recesses 16f in it, extending generally aligned with the geometric axis X. It is not intended that the surface 16r be used as a sealing surface in the assembled filter arrangement. 16f notches will help to inhibit such use. It is noted that the ribs can be included in the surface 16r to, in part, address this issue as well. (If surface 16r were to be used as a sealing surface for a radial seal, ribs 16f would not be present).
[0148] With reference again to figure 11, the upper end piece 23 is represented as having a gas flow opening 51 extending through it, in communication with the interior of the open filter 22. The opening 51, for a flow system inside outwards as shown, it is an opening that allows gas flow, gas to be filtered into the interior 22. For the specific assembly shown, the upper opening 51 receives, projecting through it, a portion of 3x inlet tube , as further discussed below.
[0149] Typically, aperture 51 is dimensioned and configured to have a larger dimension through it of at least 8 mm, usually at least 10 mm and often a support in the range of 15-40 mm, usually 15-25 mm, although alternatives are possible. Specific opening 51 is circular in definition of an external perimeter, although alternatives are possible.
[0150] Typically, the first end piece 23 is a multi-piece construction, comprising: a central frame portion, typically rigid, preformed 23x; and the sealing member 50 comprising a gasket secured to, or molded in place on, the frame portion 23x. The rigid portion 23x has an upper surface 23u with reinforcement ribs 23r on it, in the example shown.
[0151] The specific cartridge 20 shown includes a projection arrangement 55 that projects upwardly from the central frame portion 23x, of the end piece 23, in a direction generally away from the end piece 24 of the middle 21. The arrangement of projection 55 comprises at least one projection 55a, in the example at least two projections 55a, each of which projects away from the middle 21 over a distance of (at least) 5 mm, usually at least 10 mm, and often at least 15 mm in total height, from the adjacent portion of the 23x ridge center. The projection arrangement 55 can be used to facilitate radial orientation of the access cover 17 in relation to the cartridge 20 and a housing base 16, as discussed below. (Note that the cartridge 20 can be configured only with a single projection, for example, according to the modality of figures 3964).
[0152] For the specific cartridge 20 shown, the projection arrangement 55 also comprises a cable arrangement 56. The cable arrangement 56 makes it easy to hold the cartridge 20 to install it in the housing base component 16 and remove it from the same. The specific cable arrangement 56 shown comprises at least one, and in example two, cable element (s) 56b (although a single cable element could be used). Although alternatives are possible, in the example shown the two cable elements 56b are radially spaced, arcuate extensions, 56b, each s projecting upwards and laterally outwards, and thus having an axial extension 56a and a radial rim or ferrule (outwards) ), greater than 56s. The ferrules or rims 56s are oriented and molded to facilitate handling of the cartridge 20.
[0153] With reference to figure 11, it is observed that the two projection elements 55a each have an arcuate shape around a central geometric axis, X, figure 8 that extends around a geometric axis X over an angular arc at least 50 °, usually an amount in the range of 50 ° - 150 °, inclusive and often at least 70 °, although alternatives are possible. In addition, the two projection elements 55a are closer together at one end than at the other. Stated alternately, the projection elements 55a, in the example shown comprising the cable element 56b, are asymmetrically positioned around the central geometric axis X.
[0154] It is noted that at the uppermost end 56a of each element 56 it does not necessarily have to extend in a plane perpendicular to the geometric axis X. That is, upper edges 56a may be tilted upwards in extension from one end of each element 55a to the other.
[0155] Attention is now directed to figure 17, a top plan view of cartridge 20; the view of figure 17, therefore being taken towards the upper surface 23u of the end piece 23. It can be seen that the represented opening 51 is centrally positioned, that is, it is centered on a central geometric axis X of the cartridge 20 and a half 21, figures 7 and 8.
[0156] Attention is now turned to figure 18, a cross-sectional view taken generally along line 18-18, figure 17. With reference to figure 18, features previously described and viewable, include generically: medium 21 surrounding and defining the open filter interior 22, and in the example shown, centered on the central geometric axis X; end piece 23 with central opening 51 therethrough, outer perimeter 23p with housing sealing element 50 to provide sealing end 50e; and second end piece 24. In addition, the portions of the cable elements 56b (projections 55a) are visible.
[0157] In figure 18, the recess 56r under the ferrules 56s, of the cable elements 56b, can be seen. It will be understood that this will facilitate the action of holding the cartridge. Typically, the ferrule 56s will be configured so that the space under it has a vertical dimension of at least 5 mm, typically at least 7 mm. Again, this space or recess 56r may increase if the upper ferrules 56s tilt upward.
[0158] Still with reference to figure 18, for the specific cartridge 20 shown, the perimeter 23p and sealing element 50 are positioned around one end (in the example upper end 21u) of the medium 21. In particular, the sealing element 50 and perimeter 23p extend axially towards the end piece 24, from the upper end 21u of the middle 21, an amount of at least 3 mm, typically at least 5 mm and often at least 7 mm, for example, in the range of 7 -20 mm. Although alternatives are possible, in a cartridge analogous to cartridge 20 (in which at least a portion of the perimeter 23p and sealing element 50 are oriented around a portion of the middle 21 and projecting downwardly from the upper end 21u of the middle 21) a distance as described has advantages for “vertically challenged” applications, as discussed below.
[0159] In more general terms, the first end piece 23 includes a perimeter ring 23p having a portion that projects at least 3 mm towards the second end piece 24 while also completely surrounding the middle 21. That portion typically projects through the minus 5 mm, usually at least 7 mm and typically an amount in the 720 mm range as defined. When these terms and dimensions are used, it means that an axial extension of the rim portion 23p that extends in the axial direction of the second extreme piece 24 and that also completely surrounds the middle pack 21, has the minimum distance or distance range as defined. Portions of the preform 23 that do not surround the medium 21 are not counted in this dimensional definition. The reasons for this will be understood from certain discussions below.
[0160] The characteristic of the perimeter 23p and sealing element 50 having at least a portion of it surrounding the means 21 distinguishes the specific units represented in WO 2008/115985; WO 2008/157251; and WO 2009/018454, incorporated herein by reference. It is observed that with the arrangements represented in WO 2008/115985; WO 2008/157251; and WO 2009/018454, it has been described that the cartridge may comprise an integral preform element, in the form of a spool, with the upper end piece and lower end piece integrally formed with a central cartridge holder. This was readily possible, because the medium could be rolled into place on the spool or center cartridge holder.
[0161] In an arrangement in which the perimeter 23p and sealing element 50 surround an end 21u of the middle, this winding of the middle 21 over such a central "spool-shaped" construction is not so easily performed since such a winding operation would be inhibited by rim 23p on end piece 23. However, winding medium 21 in place on a central support is a preferred manufacturing method, with some types of medium. To accommodate this, the preferred cartridge 20 depicted comprises multiple components that are fastened together, for example, with a snap fit or other fastening arrangement, to form the total rigid structure portion thereof after the medium is in place. These components can be seen in figure 18, as comprising: upper end piece 23; and center cartridge holder 61. The center cartridge holder 61 and lower end piece 24 can (optionally) be formed as a single integral unit, for example, molded from plastic, and the end piece 23 can be attached to it, for example , with a snap fit or other fixation arrangement, after the means 21 is in place.
[0162] Of course, alternative constructions can be made. For example, the first end piece 23, second end piece 24, and center cartridge holder 61 can be separately made and fixed together. In addition, in some applications, the first end piece 23 can be fixed integrally with the central cartridge holder 61, and the second end piece 24 can be snap-fit in place. However, when the first end piece includes a perimeter 23p that projects axially as described, it will be convenient to load the medium 21 onto the central cartridge holder 61 before the end piece 23 is in place. Since there is no similar rim that would interfere with assembly on the second end piece 24, it is convenient to form the central cartridge holder 61 and second end piece 24 integral with each other, as a preform 60.
[0163] Of course, alternative methods of connecting the components, in addition to pressure fitting, can be used. For example, with two preformed components they can be fixed together with sonic welding or heat welding, or with adhesive, or alternately. However, a press fit connection is particularly convenient for fabrication and assembly.
[0164] Regarding the assembly of the cartridge 20 as described, attention is directed to figure 19, a detailed perspective view of the cartridge 20. With reference to figure 19, the following are visible: the first end piece or top end piece 23 comprising section preform central 23x with opening 51 through it, and sealing element 50, shown as detailed with each other. In the examples shown, the sealing element 50 is positioned (molded in place on) part 23 and is not removable thereafter, although alternatives are possible. In the representation of figure 19, perimeter openings 23o are positioned at a piece perimeter 23x. When the sealing element 50 is molded in place, the resin will flow through these openings 23o, securing the seal 50 against removal.
[0165] Also visible in figure 19 is the preform 60 which comprises support of central cartridge 61 and end piece 24. In addition, in figure 19, medium or medium package 21 is visible. The medium 21 is represented schematically and can comprise a variety of arrangements including: a cylindrical construction formed as a unit or as a spiral construction of medium, or alternative configurations.
[0166] Figure 19 is not intended to indicate that the cartridge 20 would be assembled by fitting the parts together in the shown material, instead the detailed view is provided to understand the various components. The typical setup will be discussed further below.
[0167] In figure 20, an alternative detailed view is shown, generally analogous to figure 19, except that it shows that the end piece 23 would typically be pre-assembled with sealing arrangement 50 in it.
[0168] For a typical assembly, preform 60 would be prepared and medium 21 would be positioned therein. The means 21, for example, may comprise means wrapped around the central cartridge holder 61.
[0169] With reference to figure 20, at the end 61u (of the support 61) the opposite end element or end piece 24, the central cartridge support 61 includes an element 65 of a cartridge engagement arrangement 66, for engagement with another element 67 in end piece 23. Typically and preferably, the cartridge engagement arrangement 66 is a press fit / projection arrangement, configured so that when the two elements 65, 67 are joined, they engage in a press fit mode that inhibits separation. For the specific arrangement shown, the first element 67 is a receiving arrangement, and the second element 65 is a projection arrangement; in the example shown, the projection arrangement 65 comprising a hook arrangement and the receiver arrangement 67 comprising a receiver opening arrangement. For the specific assembly shown, the projection arrangement 65 comprises a plurality of flexible snap-fit hooks 65a; and, the receiver arrangement 67 comprises a plurality of receiver openings 67o; the hooks 65a and the openings 67o being positioned and configured so that when the end piece 23 is pushed over the upper end 61u of the preform 60, the hooks 65a are deflected radially inward until they pass through selected openings of the openings 67o , at which point they engage with the hooks 65a preventing the end piece 23 from separating from the cartridge holder 61.
[0170] It can now be understood that the means 21 can be rolled onto the support 61, although the upper end piece 23 supports a sealing arrangement that surrounds a projecting place along one side of the middle. In this way, the vertical space is saved (or more effectively used) by not requiring the sealing arrangement 50 to be above the middle 21 and thereby engaging a housing surface at that location.
[0171] It is observed that the receiver arrangement 67 comprises a plurality of receiver openings 67o spaced from the central opening 51, but generally positioned oriented around the central geometric axis X. The openings 67o are in communication with the filter interior open 22.
[0172] In figure 21, a bottom plan view of the cartridge 20 is provided. Here, end piece 24 is viewable, along with selected features from it. With reference to figure 21, it is observed that the end element 24 includes a central opening or receiver 24o in it, which defines a closed external receiver 24u for projection arrangement 44, figures 7 and 8, in the housing base 16 during cartridge installation . The opening 24o extends through a lower portion 24x of the element 24, but forms a closed external receiver 24u as it comprises an arrangement that projects upwards from the portion 24x in the preform 60, figure 20. This receiving arrangement closed external tor 24u, figure 21 is further discussed below.
[0173] By the term “closed” in reference to the receiver 24u, it means that the receiver 24u does not include any opening through it, in gas flow communication with the open filter interior 22. Thus, the opening 24o can be seen as a depression in the bottom 24x against an open opening through the material of the preform 60.
[0174] Still with reference to figure 21, the end piece 24 includes an axial overlapping drain arrangement of medium according to several of the characteristics described in WO 2007/053411; 2008/115985; WO 2008/157251; and WO 2009/018454, incorporated herein by reference. The axial overlapping drain arrangement of medium is generally a portion of a lower end piece 24, in this case portion 24r, which is a direct axial overlap with medium 21, so that liquid collected in medium 21 can at least in part drain directly down through the end piece 24, without having to pass completely through the medium pack 21 together with the filtration gases. In this case, the axial overlapping drain arrangement of medium comprises a plurality of recesses 70r in an outer perimeter 70 of the end piece 24. The recesses 70r lower towards the central opening 24o (or central geometric axis X) from the outer perimeter 70, the locations axially overlapped by means 21; that is, to locations positioned directly under the middle 21 when the cartridge 20 is oriented for use.
[0175] For the specific assembly 1 shown, the gas flow during filtration is from an internal perimeter of medium 21i, figure 18, to an external perimeter 21p, figure 18. During the gas flow, the liquid will coalesce in medium 21 and it will start to accumulate a height of liquid in it. Part of that liquid can efficiently drain down through the recesses 70r, figure 21, that is, through the lower end 21b of the middle 21, without having to go all the way to the outer perimeter 21p. Of course, part of the liquid can be pushed to the outer perimeter 21p by the gas flow. However, the axial drain arrangement under the medium 21 helps efficient flow of the coalesced liquid from the medium 21 and facilitates operation. Again, these characteristics are similar to those described in several publications referenced above. It is noted that additional openings can optionally be included through the end element 24 to facilitate drainage of liquid.
[0176] Comparing figures 11, 14, 20 and 21, it is observed that the projections 16k in a lower portion of the housing base 16 (figure 14) are dimensioned and positioned to project into selected recesses of the recesses 70r (figures 11, 20 and 21) of the lower end part 24 of the cartridge 20. This helps to ensure that as the cartridge 20 is lowered into the housing base 16, the cartridge 20 and housing base 16 are rotationally oriented appropriately with respect to and that cartridge 20 is suitable for use in assembly 1. There are additional means provided to help ensure this as well. The 16k projections are optional, however, again they help the service provider to understand that the cartridge 20 is an appropriate one for the system in which it is being inserted.
[0177] The engagement between the selected receivers of the 70r and 16k projection receivers also helps to keep a cartridge in proper orientation during handling and use. It is observed that not all 70r receivers would be expected to have 16k projection extending on them, typically, a majority of 70r receivers would not.
[0178] With respect to the general construction of the preferred preform, typical 60, comprising central cartridge holder 61, the lower end piece 24, and the receiver 24u, attention is directed to figures 22-25.
[0179] Referring first to figure 22, a side elevation view of preform 60 is provided. The previously described features include: extreme part 24; central cartridge holder 61; and element 65 of the engagement arrangement 66, comprising hooks 65a.
[0180] In figure 23, a top plan view of the preform 60 is shown. It can be seen, with reference to figure 23, that individual hooks 65a do not all have the same perimeter dimension, instead some are narrower and at least one is wider; for example, in 65z, a wide hook is represented and in 65y, a narrow hook is represented. Correspondingly, with reference to figure 17, several of the openings 73 that operate as receivers for the second element 67 of the coupling arrangement 66 are narrow or wide, in 73x a wide opening is shown and in 73y a narrow one is being represented. The configuration of the narrow and wide hooks 65a and receiver openings 73 are selected so that the end piece 23 can only be snapped into the preform 60 in one (or a limited number) of relative rotational orientations, preferably only one orientation relative rotational. Alternatives are possible.
[0181] With reference to figure 22, it can be seen that the central cartridge holder 61 comprises an open porous structure, and in the example shown, comprising a plurality of supports 75 interconnected by ribs 76. From the above description of operation of the assembly 1, it will be understood that gas generally flows through the open pores 77 formed in the central cartridge holder 61 from that construction.
[0182] Still with reference to figure 22, the receiver 24u optionally defines a single receiving element (projection) 78 positioned offset from the central geometric axis X. The receiving element (projection) 78 is configured to receive projecting upwards a portion of the projection arrangement 44 in the housing base 16. The way in which this optionally provides selected rotational orientation of the cartridge 20 with respect to the housing base 16 is discussed below.
[0183] In figure 23, a top plan view of central cartridge holder 70 is provided. The wide hook 65z and narrow hooks 65y can be seen. It is observed that the specific preform 60 represented, includes only a wide hook 65z although the principles can be put into practice with alternative constructions. Also shown in figure 23 are features previously discussed as follows: recesses 70r in end piece 24, and receiver 24u comprising projection element 78.
[0184] In figure 24, a cross-sectional view taken generally along line 24-24, figure 22 is shown. Here previously discussed and viewable features include: central cartridge holder 61 with holes 77 in it; hooks 65a; extreme piece 24 with a perimeter ring 70; and central receiver 24u defined by the receiving element 78.
[0185] In figure 25, an enlarged fragmentary cross-sectional view taken generally along line 25-25, figure 22 is provided. This is a downward view of a lower portion of the receiver 24u along its inner side.
[0186] In figures 26-30, characteristics selected from upper part 23 can be seen. Referring first to figure 26, a top perspective view of end piece 23 is shown. The features previously described can be seen in the figure as follows: central portion 23x with upper surface 23u and ribs 23r; perimeter 23p with the housing sealing element 50; the central opening 51, centrally positioned; projection elements 55a; and openings 73 which, as described above, operate as a receiver arrangement 67 for the projection arrangement 65 comprising hook 65a, previously described. A single 73x wide opening for receiving the single wide hook is shown. This ensures, again, that the upper part 23 can only be snapped into the preform 60 in a single rotational orientation, although alternatives are possible.
[0187] In figure 27, a top plan view of the cartridge 20 is provided and features previously described are visible: central opening 51; openings 73 including 73x wide opening; and perimeter 23p including seal 50 on it.
[0188] In figure 28, a cross-sectional view taken generally along line 28-28, figure 26, is provided. Viewable characteristics previously discussed in perimeter 23p with seal 50; the central opening 51 and portions of the projection elements 55a.
[0189] In figure 29, an enlarged fragmentary cross-sectional view of an identified portion of figure 28 is indicated. A rib 80 that projects downwardly is visible from a central portion 23x of the piece 23, (inside or inner surface 23i) spaced radially inward from the perimeter 23p. From an examination of figure 28, it will be seen that the cover 23 has a plurality of (in example three) ribs 80. The ribs 80 will generally press in the middle 21, when the piece 23 is snapped into place in the preform 60 with the middle 21 in place. Thus, typically an adhesive or sealant is not needed at that location, and ribs 80 will be suitable to inhibit gas flow that diverts from medium 21, to the point typically desired for crankcase ventilation filter operation. With reference to figures 27-29, for the specific assembly shown, the ribs 80 are concentric, and central with respect to the central geometric axis for the cartridge 20. Although this is typical, alternatives are possible. (It is noted that such ribs, or rib arrangements, can be executed in the form of figures 39-64, if desired).
[0190] In more general terms, the end piece 23 includes a rib arrangement in it, along an internal or inferior surface thereof. The rib arrangement may comprise one or more ribs 80 typically continuous in extension around the central geometric axis X, typically concentric with it and concentric with each other. The rib arrangement comprises one or more ribs 80 configured to push medium, when the end piece 23 is advantageously installed in the cartridge 20.
[0191] Again, in figure 28, it can be seen that the specific end piece 23 represents includes three ribs 80 radially spaced from each other, and each concentric with a central geometric axis of the cartridge. Alternatives are possible.
[0192] In figure 30, a perspective view of the end piece 23 is visible. The previously described features are shown. III. HITCH BETWEEN FILTER CARTRIDGE 20 AND HOUSING 2 FOR CARTRIDGE ORIENTATION AND SAFE ROTATIONAL LOCKING
[0193] As previously described, the assembly 1 shown includes arrangements that help to ensure that: the cartridge 20 is suitable for the assembly 1 in question, is properly oriented in the housing 2 when installed, and is fixed in a suitable orientation to the measure that assembly 1 is used. In this section, features that refer to the engagement between the filter cartridge 20 and the housing base component 16, which facilitate this, are described, along with the general interaction between the cartridge 20 and the resulting base component 16. Features are also provided for preferred interaction between the cartridge 20 and the service cover 17. A. THE BASE COMPONENT 16
[0194] Attention is again directed to figures 14 and 16 with respect to the projection arrangement 44 in the housing base component 16. In figure 14, a top plan view of the projection arrangement 44 is shown. The view of figure 14, then, is generally a view of the interior 16z of the bottom 16b of the housing base component 16. In the view of figure 14, the projection arrangement 44 is shown positioned adjacent and spaced from the central drain opening 5o leading to drain 5.
[0195] In figure 15 referenced above, it can be seen that in the housing base component 16, the projection arrangement 44 comprises a projection element 85. The displacement of the drain opening 50 allows drainage of liquid and lower surface 16z for the opening 50. The interior 16z of surface 16b may be somewhat funnel-shaped to facilitate drainage. B. THE CARTRIDGE COMPONENT
[0196] With reference now to the characteristics of the cartridge represented in figures 17 and 18 and discussed above, it will be understood that the receiver 24u (figure 21) in the lower end piece 24 is positioned to project upwards to define a receiving pocket or projection 78. The receiving pocket 78 is dimensioned, molded and oriented to receive the projection element 85 which projects therein as the cartridge 20 is lowered into the housing base component 16. C. PROJECTION / RECEIVER AND ROTATIONAL CARTRIDGE ALIGNMENT ARRANGEMENT FOR ACCOMMODATION BASE IN GENERAL
[0197] In general terms, assembly 1 includes a receiver / projector arrangement comprising a projection 44 on the housing base, and a receiver 24u on the cartridge, which engages with each other when the cartridge is inserted. Typically, the projection (defining the receiving pocket) 78 comprises a structure that extends towards a top 78t, figure 20, at least 5 mm in the open interior of cartridge 22, from the lower end 21b of the middle 21, typically at least 10 mm, usually at least 15 mm, and often an amount in the range of 15-50 mm. The projection 55 on the housing base 16 also typically includes at least that amount of extension.
[0198] There is no specific requirement that the projection / receiver is also oriented to provide rotational orientation of the cartridge 20 in relation to the housing base 16. However, the specific receiver / projection arrangement represented provides this advantage, as follows.
[0199] In particular, the example assembly shown is then configured, so that the cartridge 20 can only be oriented in a rotational orientation specifically identified in relation to the housing 16, during installation. This rotational orientation for the represented example corresponds to rotational alignment when the projection arrangement 44 (alley 85) is properly aligned with respect to the receiver 24u (projection 78), so that the cartridge 20 can be fully lowered. This is partly due to the optional eccentric positioning of the 24u receiver (or projection 78) in relation to the central geometric axis X.
[0200] It is observed that a variety of projector / receiver arrangements can be used to achieve the desired result, and the specific configuration of the 24u receiver (projection 78) and projection arrangement 44 are merely examples. In addition, the arrangement can be configured for a number of different specific orientations that are possible, if desired.
[0201] It is also observed that the projector / receiver arrangement comprising the projection arrangement 44 and receiver 24u operate to help ensure that the cartridge 20 is the appropriate one from the involved assembly 1; and helping to ensure that the cartridge 20 is securely retained and does not move in orientation, as the equipment in which the assembly 1 is used vibrates or is subjected to shock.
[0202] It is further noted that the engagement between the projection 16k and the recess 70r in the lower end piece 24, also facilitates the rotational orientation of the cartridge, figure 20. However, as the cartridge 20 is lowered into the base of housing 16, the initial engagement for rotational alignment will be when the receiver 24u (projection 78) begins to receive projection 44.
[0203] Additionally in relation to the service cover or cover assembly, figures 10 and 31-37.
[0204] Here, with reference to figure 1, a service cover (access cover) or cover assembly 17 has been identified, which is fixed in place on the housing base component 16 in use, to close housing 2. On 10, a top perspective view of the access cover 17 is provided.
[0205] Access cover 17 for the arrangement shown comprises: outer perimeter mounting ring 90, central cover section 91; and arrangement of bleed valve or optional evacuation valve, 14.
[0206] Although alternatives are possible with the application of some principles according to the present disclosure, for the specific cover assembly 17 shown, the mounting ring 90 is rotatable in relation to the covering section 91, so that the mounting ring 90 can be rotated to secure the cover assembly 17 on the housing base 16, without rotating the cover section 91. The advantages of this will be evident from further discussion below.
[0207] In figure 34, a side elevation view of the perimeter mounting ring 90 is provided. In figure 35, the top plan view of the perimeter mounting ring 90 is provided, and in figure 36, a cross-sectional view taken generally along line 36-36, figure 35 is provided.
[0208] With reference to figures 34-36, the mounting ring 90 is generally configured with a central opening 92 through it, allowing the ring 90 to be positioned over, and slidably surrounding the ring 91, figure 10. One outer perimeter 93 of the perimeter ring 90 is provided with spaced claws 94 to facilitate gripping and rotation.
[0209] Referring to figures 34 and 36, the mounting ring shown 90 includes a toothed or irregularly designed downward ring section 95, comprising individual downward projected teeth 96. Clearances 97 between teeth 96 facilitate locking engagement with one portion of housing 2, to inhibit unlocking of the ring, after tightening, by vibrating the equipment in which assembly 1 is used. This is further discussed below.
[0210] In figure 36, it can be seen that the inner surface 91i of ring 91 is threaded, for engaging with threads 16t in the housing base component 16, discussed above. It is observed that an alternative rotational connection approach, not involving threads, for example, involving a receiver / projection connection analogous to the modality of figures 39-64 can be used here.
[0211] Attention is now turned to the side elevation view of figure 2 and the cross-sectional view of figures 7 and 8. It can be seen that the ring 90 is tightened on the housing frieze 16 (in the example on the 16t threads) figure 2, sufficiently so that the ring 90 is lowered until one of the clearances 97 engages the upward projection 36 in the locking projection arrangement 36. In this way, equipment vibration will probably not cause the ring 91 to loosen in the housing 16. Instead, sufficient strength (provided by a person turning the ring 90) to overcome the rotational lock between the projection 36x and adjacent teeth 96 will be required.
[0212] Attention is now directed to figure 37, in which the cover or cover assembly 17 is represented in a detailed view. In figure 37, the mounting ring 90 is visible, as well as the cover section 91. The cover section 91 is configured with an outer perimeter 91p having an outwardly oriented perimeter ring 100 projecting radially outward from the same. In assembly, the ring 90 is positioned on the top of the cover 91, such that the inwardly oriented ferrule 90s on the ring 90 rests on and above the radial ferrule 100 of the cover section 91.
[0213] The cover section 91, figure 37, can be provided with a radial interference portion as shown in 101, so that after the ring 90 is pressed on the cover 91, it tends not to separate by superior movement, unless that forced. A small amount of interference can be used to affect this.
[0214] Referring again to figure 37, attention is directed to the bleed valve assembly 14. The bleed valve assembly 14, figure 37 is shown in detailed view on the bleed valve opening 105 through the cover 91. A cross-sectional view of the bleed valve assembly 14 is shown in figure 8.
[0215] With reference to figures 37 and 8, the bleed valve assembly 14 comprises valve element 107 seated, when valve arrangement 14 is access opening, closed, 105. Valve element 107 is positioned at and supported by the support disk 108. The support disk 108 is designed to hold the valve element 107 in the closed position (until it is overcome by the internal pressure in assembly 1) by arrangement of propensity 109, in the example shown comprising the spring 109s. The cover 110 is positioned on the valve assembly, the cover 110 having an external perimeter 112, figure 37, with bleed flow clearances 113 therein. The cover 110 is secured in place by a snap fit over projections 114.
[0216] In figures 31-33, the central cover section 91 is represented. With reference to figure 31, the cover section 91 can be seen as comprising flow arrangement 3 comprising the tube 3x; outer perimeter 91p with perimeter ferrule 100 in it; and interference projection 101. Also visible, is a 3x portion of 3x tube that protrudes under the cover 91, with an inertial impact arrangement 31, comprising shelf 31u supported by spaced projections 31p, defining lateral gas flow outlets 31 between them. It can be seen that as gas enters the tube 3x, it will project downwards towards the inertial impaction arrangement 31 and surface 31u, liquid may collect on the surface 31u, to fall downwards, when mounting 1.
[0217] In figure 31, 120 receivers are positioned on centerpiece 91. Receptors 120 are opened at the bottom and are sized to receive projection elements 55a onto cartridge 20 by projecting on them. Preferably, the size and shape of projection elements 55a are configured to match receivers 120 only in a rotational orientation (or in a rotational, spaced, specific, identified orientation selected) of cartridge 20 and access cover 17 (i.e. cover 91, around the central geometric axis X). This facilitates rotation indexing.
[0218] Still with reference to figure 31, it is observed that receivers 120 are represented with an inclined or downward taper in relation to them. The cable arrangement can be configured analogously if desired.
[0219] Also with reference to figure 31, it is observed that in 125, an extreme portion of tube 3x is represented in the example indicated under the inertial impaction arrangement 31. It is observed that in general the lower end 3z of tube 3 extends to down into the housing base 16, when the cover assembly 17 is installed, to a location lower than a topmost 78t of the projection 78 on cartridge 20. Typically, the extension is to a location at least 3 mm more lower than the top 78t, and usually at least 5 mm. Indeed, the extension will typically be to a location at least within the range of 5-50 mm below the 78t top, although alternatives are possible. This level of extension can be understood, for example, by reference to the cross-sectional view of figures 7 and 8.
[0220] With reference to figure 37, the end 125 includes a perimeter 125p with a recess 125r in it, sized to fit around a projection of portion 78 into an interior of cartridge 20, as service cover 17 is lowered. The receiver 125r and the specific example shown are dimensioned so that the access cover 17, and in particular the portion 91, must be rotationally aligned so that the receiver 125r can receive the projection 78 projecting through it. Preferably the receiver 125r and end 125 are configured so that only a rotational orientation with respect to projection 78 is possible.
[0221] In figure 32, a top plan view of the cover section 91 is visible. In figure 33, a cross-sectional view taken generally along line 33-33, figure 32 is visible. V. ADVANTAGES, OPERATION AND IDENTIFIED CHARACTERISTICS SELECTED A. ROTATIONAL INDEXING BETWEEN CARTRIDGE 20 AND THE ACCOMMODATION BASE 16
[0222] As described above, the projection arrangement 44 in the housing base 10 and the receiver 78 in the cartridge 20 comprise a receiver / projector arrangement with respect to the housing base 16 of the cartridge 20. This arrangement also helps to secure the cartridge against movement after installation. This receiver / projection arrangement can optionally serve as a rotational indexing (alignment) arrangement by which it can be ensured that the cartridge 20 is suitable for the assembly 1 shown, and is properly oriented thereon for use.
[0223] In particular, the cartridge receiver 78 can be shaped and oriented, together with the projection 44 and the housing base 16 so that the cartridge 20 can be lowered into the housing base in a single (or one of a certain set) selected) of rotational orientations. This is exemplified by the arrangement represented.
[0224] It is noted that also as discussed above, receivers 70r and projection 16 may additionally refer to the maintenance of cartridge 20 in a selected rotational orientation in relation to the housing base 16. B. ROTATIONAL INDEXING BETWEEN CARTRIDGE 20 AND A SERVICE COVERAGE 17
[0225] With reference to figure 7, it is observed that the access cover includes, in the portion 91 thereof, upwardly oriented, arched receptors 120. The receivers 120 are dimensioned and configured so that the access cover 17 can be only positioned on the cartridge 20, when installed, when the receivers 120 are rotationally oriented to align with projection elements 55a. In this way, the access cover 17 is rotationally aligned with respect to the cartridge 20 and the housing base 16.
[0226] Furthermore, as discussed above, optionally the receiver 125r is dimensioned, molded and located so that it can only continue to lower into the cartridge 20, if it is oriented to receive the receiver 78 that projects through it. This also helps to orient the access cover 17 rotationally in relation to the cartridge 20 and housing base 16.
[0227] An advantage from rotational indexing will be understood by comparison with figures 7 and 5. In particular, the bleed valve arrangement 14 is asymmetrically positioned in the cover assembly 17. A rotational alignment of the access cover 17 as described it will specifically rotationally position the bleed valve arrangement 14 with respect to the central geometric axis X. In particular, the receivers 120 are preferably positioned so that the bleed valve arrangement 14 is oriented in half of the access cover 17, figure 5, away from the 18x mounting arrangement. Preferably receivers 120 are oriented so that the bleed valve arrangement 14 is positioned (approximately) 180 ° rotated about the central geometric axis X from the 18x mounting shim arrangement, that is, so remote from the 18x mounting shim if possible.
[0228] When the 18x mounting shim arrangement is configured so that mount 1 is mounted directly on a motor or close to a motor, remote positioning in the bleed valve arrangement 14 can be advantageous. One reason for this is that when the bleed valve 14 opens, it will discharge a little oil in addition to gases. It is preferred that these oils are not sprayed on the engine, if possible. The remote positioning of the bleed valve arrangement 14 in relation to the 18x mounting pad is advantageous for this reason. This can be accomplished by an indexing arrangement between the access cover 17 and the housing base / cartridge combination as described. Of course, in the example shown, cartu-cho 20 is already rotationally indexed in the housing base 16 as described above in a single selected rotational orientation. In this way, the joined mode in which the access cover 17 can be pushed sufficiently over the housing base 16 for the threaded engagement to occur, is when the projection arrangement 55 is pushed into the receivers 120. (An advantageous location analogous of the bleed valve on the access cover is also shown in the form of figures 39-64).
[0229] In more general terms, a receiver arrangement on the cover 17 is configured to receive by projecting a projection arrangement on the cartridge 20, only in one (or one of a selected number of) rotational orientation (s) ( is) in mutual relationship. This can be used to help ensure that the bleed valve arrangement 14 is oriented where desired. An example arrangement is represented that accomplishes this. Variations in the number of projections and receivers, and in the format and location of the projectors / receivers can be used. C. OPERATION OF THE OPTIONAL INERIAL IMPACTATION ARRANGEMENT
[0230] In general operation, as the assembly 1 is operated with gas flow through the medium 31 of the cartridge 20, a height of liquid will begin to accumulate in the cartridge 20 along the bottom thereof. Typically, a steady-state condition will eventually be achieved, in which the liquid does not rise or fall substantially during continuous operation, but instead the liquid will drain out of the medium 21 at approximately the same rate at which the liquid is replaced. This drainage, evidently in part occurs by the flow directly down through the recess 70r, but it can also occur by flow of liquid in an external perimeter 21p of the middle 21 and then down along the housing bottom 16b to the opening 5o.
[0231] The optional 31u inertial impaction plate will serve, in part, as a collection point for some of the liquid in the inlet gas stream. This liquid will tend to coalesce in droplets that can fall along the inside 22 of the cartridge 20. This liquid will fall, for example, downwards on an upper side of the receiver 24r. With reference to the cross section of figures 7 and 8, the configuration of that region 24t of the receiver 24r is such that the liquid that strikes the receiver 24r from above will tend to drain downwards and into the lower portion 21b of the middle 21 and from there mode into the liquid height described above, for eventual drainage into outlet 5o.
[0232] Still with reference to the cross sections of figures 7 and 8, it is observed that the drainage into the outlet 5o and tube 5, of coiled liquid, is partly facilitated by the cartridge 20 being positioned on spaced ribs 40, seen that this creates open flow channels under the cartridge 20 for the liquid flow. D. FEATURES RELATING TO THE PREFERRED APPLICATION IN “VERTICALLY CHALLENGED” SPACES OR FOR WHICH A VERTICAL SPACE IS EFFICIENTLY USED
[0233] As previously indicated here, several characteristics of the assembly featured here are configured to take advantage of the vertical space available for assembly 1 to be installed in use, in an efficient manner. In some cases, the application is one that is “vertically challenged”, that is, in which the space available for assembly 1 is relatively short in vertical dimension, and effective use of space is necessary to ensure that the appropriate medium is present to perform the effects of desired filtration and coalescence and service life. However, in general, the issues refer to improvement in an assembly configuration, to effectively accommodate the space.
[0234] In this section, some of the features of the assembly that facilitate this are described. Evidently, the challenges can be at least partially met with variations from the described characteristics, or only with the selected ones implemented for a given application. 1. EXTERNAL CHARACTERISTICS OF SELECTED ACCOMMODATION
[0235] The positioning of one of the gas flow orifice arrangements 3 in the housing 2 through the upper cover 91, in part, facilitates efficient use of vertical space. For the specific assembly 1 depicted, flow arrangement 3 is an inlet flow arrangement, however, in some cases, the assembly may be configured for tube 3 to be an outflow arrangement. In any case, by introducing the 3x flow tube through the top cover 91, as opposed to through one side of the housing 2 (either in the bottom section 16 or service cover 17) extreme vertical side wall challenge is avoided. This is because a side inlet would generally require vertical height to accommodate its positioning, while ensuring that inlet 3 and outlet 4 are on opposite flow sides of cartridge 20, and are insulated by housing seal components. It is noted that for the specific assembly 1 shown, with a rotating mounting ring 90 as shown, specific advantage is provided since the mounting ring 90 must be able to rotate in relation to the cover section 91 and housing base 16 , for proper closure of housing 2. If the inlet 3 were to be on one side of the upper cover 17, then the service cover 91 would have a higher vertical height to accommodate the side entrance. This could be disadvantageous.
[0236] Other advantageous configurations outside housing 2, which provide control of vertical issues, refer to the size, orientation and location of valves 10 and 14. With reference to figure 1, the assembly of bleed or bypass valve 14, positioned in an upper portion of the central cover 91 is provided with a relatively low vertical profile, not more than 30 mm, and typically not more than 20 mm, from adjacent portions of the cover section 91. Also, the valve assembly regulator 10 is positioned on one side 16s of housing 16, and thus does not add vertical height to assembly 1.
[0237] It is noted that the exterior features described in this section can be executed with the modality of figures 39-64, if desired. 2. SELECTED INTERNAL CHARACTERISTICS THAT FACILITATE CONTROL OF LIMITED VERTICAL ISSUES OR EFFECTIVE USE OF SPACE OR VERTICAL DIMENSION
[0238] Attention is now directed to figures 7 and 8 with respect to selected internal characteristics that facilitate control of internal space. First, attention is directed to the positioning of the seal 50 in a location surrounding the middle 21, as opposed to a location above the middle 21. The advantage from this refers to the fact that the housing 2 does not need to be equipped with a vertical dimension suitable for a housing seal above medium 21. In this case, housing 16 would need to be higher, for fence 50 to seal against it, if the medium were to have the same vertical dimension, but with the seal not located in a position surrounding the middle 21.
[0239] Obviously, the positioning of the sealing element 50 in a place surrounding the medium 21 is facilitated by cartridge characteristics that allow the first extreme piece 23 to be placed (for example, by pressure fitting) in position, after the means 21 be positioned on the central support 61, for example, by being rolled in place. Thus, a challenge for potential manufacture of the cartridge 20, to control positioning of the seal 50 in the desired location, is dealt with in the cartridge 20 described, positioning the end piece 23 after the means 21 is in place, for example, by pressure fitting or another connection (for example, by sonic soldering, heat soldering or adhesive). The manufacture of an efficient and effective cartridge 20 in this way is further facilitated by the projection ribs 80 on the underside of the end piece 21, as described above with reference to figures 27-29. E. OTHER ADDITIONAL ADVANTAGEABLE FEATURES
[0240] It is observed that for the specific arrangement shown, the mounting bracket or shim 18x is incorporated in the molded housing base 16, together with the outlet hole 4. This makes fabrication and installation convenient, and ensures that the output 4 is always oriented with respect to the equipment on which assembly 1 is mounted, in a desirable location and orientation, selected.
[0241] The location of the pressure relief valve 14 top cover allows it to remain clean during service of filter assembly 1, as it is moved out of the way together with a cover assembly 17 during service.
[0242] Having the filter cartridge 20 built by positioning at least one of the end pieces in a central core in a way for later connection to the rest (for example, by pressure fitting) allows a variety of arrangements in which the medium can be preformed or alternatively be rolled in place. For example, a preformed cylinder of medium can be positioned in place on preform 60 with the end piece 31 then placed in place (for example, by press fit).
[0243] It is observed that the openings 75 in the first extreme piece 23 that receives hook elements in the central cartridge support that protrudes in it, are dimensioned in excess in relation to the hook elements and are in direct flow communication with the open central interior 22 of cartridge 20 and middle 21. These openings, in part, allow gas flow communication with the bleed valve arrangement 14 to facilitate vent valve operation.
[0244] Typically, the medium pack 21 will be made slightly higher (wider) than the distance between the end pieces 23/24 in the cartridge 20. Thus, when the end piece 23 is pushed against the middle during fitting by pressure in place, inhibition of the deviation of gas flow between the medium 21 and the end piece 23 occurs. This is aided by ribs 80. F. POTENTIAL APPLICATION WITH “OUTSIDE INSIDE” FLOW
[0245] It is observed that the represented assembly is specifically configured for use to filter gas flow through the filter cartridge 20 being of flow "inside out". Many of the principles described here can be applied when the filtration flow through the cartridge is “inside out” during filtration. When this is the case, typically, the lower end piece 24 is provided with an opening therein for draining liquid flow from the inside of the cartridge. The seals are properly positioned to ensure that the upstream and downstream locations are isolated from each other. Lower middle axial overlap drain opening arrangements are generally located towards the inner perimeter of the medium instead of the outer perimeter. Several other characteristics are modified to accommodate the intended flow, as a structure for adjustment or proper interaction. However, many of the features described can be performed in any of the modalities described here, or be modified for implementation in such arrangements. G. MULTIPLE POSSIBLE ROTATIONAL GUIDELINES
[0246] It is observed that the rotational indexing (alignment) arrangements represented between the cartridge and the housing base, and the service cover and cartridge, are shown in a mode that allows only a single rotational orientation. The various principles described can be applied in which each is capable of more than one rotational orientation, for example, selected, defined, spaced, rotational orientations. Variations that would accommodate this would involve providing multiple appropriately spaced receiver / projection arrangements, or some variation thereof, to allow for multiple rotation. This could be particularly advantageous when the internal projection 3w of the access cover 17 is not centrally positioned, but instead it is eccentrically positioned in relation to the central geometric axis X. When this is the case, a service cover can only be positioned in a unique rotational orientation with respect to the cartridge, if the opening 51 and the cartridge is also eccentrically positioned. Thus, if the cartridge was rotated to different orientations, the inlet tube 3 would also have been rotated about the central geometric axis X to the similar location. (This could similarly be done with the mode in figures 39-64). SAW. ASSEMBLY APPROACHES AND DIMENSIONS, EXAMPLE MATERIALS A. EXAMPLE DIMENSIONS
[0247] In drawings selected from the drawings presented, several dimensions are indicated. These are indicative of an example assembly, using principles in accordance with the present disclosure. A variety of alternative dimensions and relative dimensions can be used. For the specific example assembly shown, the dimensions shown are as follows: AA = 118.3 mm; AB = 59.1 mm; AD = 77 mm; AE = 71.8 mm; AF = 145.7 mm; AG = 58.8 mm; AH = 132.8 mm; AI = 118.3 mm in diameter; AJ = 141 mm; AK = 47.2 mm; AL = 61 mm; AM = 145.7 mm; AN = 19 mm; AO = 13.8 mm; AP = 24.6 mm; AQ = 121.2 mm; AR = 63 mm; AS = 12.5 mm; AT = 25.1 mm; AU = 7.3 mm; AV = 13.8 mm; AW = 94.8 mm; AX = 102.8 mm in diameter; AY = 91.1 mm; BB 36 mm; BC = 88 mm. Similar dimensions could be used in the form of figures 39-64. B. EXAMPLE MATERIALS
[0248] As indicated earlier, medium 21 can be generically a medium selected as a matter of choice for the application involved. However, it will be typical for the medium 21 to be selected as a material wound on the central support 61 as a layer loop when installed. Typical means of this type, efficient and effective for use in a coalescent filter, is described in the references identified above.
[0249] A variety of materials can be used for the described plastic components. Typically, a glass-filled nylon such as 33% glass-filled nylon 6, 6 can be used for such components as: cartridge holder 60; mounting ring 90; base housing component 16; cover section 91; and end piece 23. In addition, such materials can be used for hard plastic component in the various valve assemblies 10, 14.
[0250] For the housing sealing element 50 hydrogenated nitrile rubber (for example, 50-70 Shore A durometer) can be used, with a durometer of approximately 60 being typical and preferred. The sealing element 50 can be molded in place or be preformed.
[0251] For the diaphragm valve 40 a hydrogenated nitrile rubber can also be used, typically with a Shore A durometer, of approximately 40-50, for example, 45. A 60 Shore A durometer material of hydrogenated nitrile rubber can be used for valve element 107.
[0252] Stainless steel springs can be used for valve bias elements.
[0253] Similar materials can be used for the modality of figures 39-64, if desired, although alternatives are possible. VII. A TYPICAL SYSTEM FOR USE
[0254] Attention is now turned to figure 38, in which in 250 a typical equipment system is represented, in which an assembly according to assembly 1 is used. The arrangement system 250 can be, for example, equipment powered by a diesel engine, such as a truck on the highway.
[0255] Referring to figure 38, filter assembly 1, according to the descriptions here, is shown to filter crankcase ventilation filter gases from engine 251. The filtered outflow from filter assembly 1 is shown in line 252 directed in an air induction system 253. From here the gases are directed through turbo 254 for intake of engine air 270 to engine 251. Thus, in the system 250 shown, the filter assembly 1 it is part of a closed crankcase ventilation filter assembly in which the filtered gases leaving assembly 1 are oriented back into the engine air intake 270. In 260, an air cleaner assembly or air filter system air to the combustion air is also represented, directing filtered air to the induction arrangement 253. Of course, the flow of filtered gas 252 can be directed to the air filter 260 or upstream, if desired. In addition, the gas flow at 252 can be directed to the atmosphere. (The modality of figures 39-64 can be similarly used). VIII. A SECOND MODE, FIGURES 39-64
[0256] In figure 39-64, a second embodiment using principles according to the present disclosure as described. It is observed to the compatible point, the various descriptions, characteristics and materials discussed above can be executed in modalities according to figures 39-64, as will be evident from the following descriptions. It is also observed that the modality of figure 39-64 includes some improvements. One such improvement is the use of a vertical spacer arrangement generally in accordance with provisional US 61 / 503.063 and provisional US 61 / 664.340, each of which is incorporated herein by reference in its entirety. It is also noted that one of the improvements refers to the use of a non-circular seal in a specific location. This is a variation of the principles described in USSN 12 / 157,650, published as US 2009/0071111, each of which is incorporated herein by reference.
[0257] Reference 401, figure 39, generically represents a crankcase ventilation filter arrangement or assembly including features according to that aspect of the disclosure. The assembly 401 can be generically characterized as comprising housing 402 having: a gas flow inlet arrangement 403, a filtered gas flow outflow arrangement 404 and a liquid drain outlet arrangement 405.
[0258] As with the previously described modality, in typical operation, gases that carry liquid particulate material in them (and other contaminants), typically crankcase ventilation gases, are directed into assembly 401 through the flow inlet arrangement. of gas 403. In assembly 401, the gas flow is directed through a filter cartridge component 420 (not shown in figure 39) discussed below. In the filter cartridge component 420, the liquid component is coalesced and drained, and another contaminant (such as solid particulate material) tends to become trapped in the middle of the filter. The coalesced liquid component can drain downward, for example, under the influence of gravity, through the drain outlet arrangement 405, and outwardly from housing 402. The filtered gases exit assembly 401 through the outlet flow arrangement filter gas 404. Filtered gases can be bled into the atmosphere or in some cases can be directed to the other component, such as an engine air intake or induction system.
[0259] As with the arrangement shown above described above, for the specific assembly 401 shown, the gas flow inlet arrangement 403, the gas flow outlet arrangement 404 and the liquid drain arrangement 405 are individually represented as single openings and single flow tubes. Although this is typical, alternative assemblies are possible.
[0260] The typical 401 assembly includes a housing 402 configured so that when installed and equipped for use, the liquid drain outlet 405 is directed downwards. The liquid, typically oil or similar material that drains through outlet 405, can be directed to a reservoir or back into the equipment as desired. Valve arrangements can be used to control liquid flow from the liquid drain outlet 405 to the equipment as desired.
[0261] Still referring to figure 39, and analogously to assembly 1, the specific assembly 401 shown includes two gas valve assemblies, optional, in the same. The first optional valve assembly, indicated generically at 410, is a regulating valve assembly which, in the example shown, regulates gas flow for the gas flow outlet arrangement 404. In 411, a cover for the valve assembly regular 410 is represented, in the example having a drawing indicating the source in it.
[0262] In 414, an optional pressure release valve assembly or vent valve assembly is shown. The assembly 414 is generally configured to open quickly and thereby allow bleeding of gases from the inner housing 402, to protect against an excess pressure condition in the housing 402. Specific features of the optional bleed valve assembly shown 414 are further discussed below. It can be analogous to the bleed valve assembly 14, described above.
[0263] Still with reference to figure 39, as with the modality previously described, the example housing 402 shown can be characterized as generically comprising two components: a housing base, base or base component 416; and, a service cover (component or cover assembly access cover) 417. In general, during use, housing 402 is mounted on the equipment with which the assembly 401 is to be used, for example, a vehicle other equipment. Typically, assembly 401 is assembled by having the housing base component 416 fixed in place on the equipment. The specific housing 402 shown is shown with mounting flange arrangement 418 positioned on the housing base component 416, to provide such mounting, although alternative mounting approaches are possible.
[0264] It is noted that the housing bottom, base or base component 416 can be configured as a single piece or as multiple pieces, as convenient. The same would be true for the housing fund or base 16 component, discussed above.
[0265] Service cover 417 is generally removably mounted on housing base 416, to allow service access to an interior of housing 402. This service access provides installation and / or removal of an internally positioned filter cartridge arrangement 420 (not shown in figure 39) as discussed below.
[0266] Still referring to figure 39, the specific housing 402 shown as supplied with a downward-facing gas flow (inlet) arrangement, upper 403x as the 403 (inlet) gas flow arrangement. Inlet tube 403x for the example shown, comprises a portion of the cover member 491 of the access cover 417, as discussed below, although alternatives are possible.
[0267] In figure 39, housing 402 is configured with a gas flow outlet arrangement 404 and a liquid drain outlet arrangement 405 positioned on housing base 416. Since housing base 416 is generally the bottom of assembly 401, drain outlet 405 will typically be positioned on that component. The positioning of the gas flow outlet arrangement 404 on the housing base 416 is advantageous, as discussed above for assembly 1.
[0268] Although the general location for the inlet flow arrangement 403, the outlet arrangement 404 and the liquid drain outlet 405 are typically as shown; as with arrangement 1 discussed above, alternative locations are possible with some of the principles described here.
[0269] Also as with assembly 1 discussed above: for the specific assembly 401 represented, the direction of gas flow inlet, through inlet 403; and the gas flow outlet direction, through outlet 404, are generally perpendicular (orthogonal) to each other. This will be typical, although alternatives are possible.
[0270] In figure 40, a first side elevation view of the 401 crankcase ventilation filter assembly is provided. Of course, mounting flange 418 can be configured for a variety of specific arrangements, as discussed above with respect to mounting 1.
[0271] In some alternative applications, the housing base 416 can be supplied without a mounting plate arrangement 418, with attachment to the alternately supplied equipment (for example, through a fixed mounting strip or similar structure).
[0272] As discussed for the previous embodiment, and with reference to figures 39 and 40, assembly 401, in particular housing 402, and an internally received cartridge 420 (not visible in figures 39 and 40) can be characterized as having an assembly center, housing, cartridge or geometric axis of component X. The geometric axis X is referenced in the entire modality of figures 38-64. The X geometric axis is generally vertically oriented, in typical use.
[0273] In figure 41, the top plan view of the 401 assembly is shown. Selected characteristics previously indicated are identified by similar reference numerals.
[0274] With reference to figure 41, it can be seen that the top cover or service cover 417 has an external perimeter 417 p. it can also be seen that the 403x inlet pipe is generally positioned centrally in relation to the outer perimeter 417p of the service cover 417. By "centrally positioned" in its context, as discussed earlier, it means that the 403x vertical inlet pipe is positioned centered on the central geometric (vertical) X axis (figures 39 and 40), as analogously discussed above for assembly 1. As with the assembly in figure 1, many of the principles of the present application can be applied in an arrangement in which the pipe 403x inlet is not positioned centrally, that is when it is positioned “eccentrically” according to the above discussion for assembly 1.
[0275] The specific tube 403c shown, has an inner definition that is circular in cross section. This will be typical, however (as with assembly 1) it is not specifically required in all applications for the principles described here.
[0276] In addition, typically the liquid outlet drain 405, figure 40, is centrally positioned, although alternatives are possible. It also typically has a generally circular interior definition and cross section, although alternatives are possible.
[0277] Attention is now directed to figure 42, a cross-sectional view taken generally along line 42-42, figure 39. With reference to figure 42, housing 402 can be understood as defining an interior of housing 402i. An operating filter cartridge 420 is positioned within housing 402i. Filter cartridge 420 generally comprises filter means 421 positioned surrounding an open filter interior 422. Filter means 421 is positioned between, and typically extends between, end pieces opposite cartridge numbers 423, 424, while surrounding and defining the central cartridge geometric axis X, in the example also corresponding to the central geometric axis X for housing 402 and assembly 401.
[0278] As with the previously described modality, the filter cartridge 420 is a service component, that is, it is operative.
[0279] With reference to figure 42, the operation of draining liquid and inlet gas flow can be understood. As gas enters through (downwards) the directed inlet tube 403x, it is directed into cartridge 422. Then it is directed through medium 421 into the annular space of filtered gas 425. The annular space 425 is a space annular flow of filter gas or clean in flow communication with outlet arrangement 404, figure 38.
[0280] Coalesced liquid in the medium 420 generally drains down to the bottom of the housing 402b (which, for the housing 402 shown, comprises the bottom 416b of the base housing 416) and out through the drain arrangement 405.
[0281] The filtered gases from the annular space 415 are eventually directed to the outlet 404 referenced above.
[0282] As with assembly 1, 401 is configured to flow "from the inside out" during filtration. Many of the principles described here can be applied with an arrangement configured for “outside-in” flow during filtration.
[0283] In figure 56, the bottom of the housing or base component 416 is represented, without selected portions of a regulating valve assembly on it. Typically, the annular space 425, figure 41, is in flow communication with the orifice 435, figure 56, in a side wall 416s of base 416. The orifice 435 (not visible in figure 41) is configured with the outlet 404 and the regulating valve assembly 410 (figure 39) on it, as discussed below.
[0284] In figure 44, the second cross-sectional view of assembly 401, taken generally along line 43-43, figure 40, is shown. In figure 44, the cover 411 of the regulating valve assembly 410 can be seen in position in the orifice 435.
[0285] In figure 57, the top perspective view of the housing base component 416 is shown. It is observed that the housing base component 416 is shown in figure 57 without selected portions of regulating valve assembly 410 positioned thereon. The specific portion of the housing base component 416 shown in Figure 57 will generally comprise a unit that can (if desired) be shaped as a single, single plastic construction. This will be typical, although alternatives are possible.
[0286] As with the base component 16 discussed above, the regulating valve assembly 410 is an optional component. If the housing base component 416 were part of an assembly that does not include such a regulating valve assembly or that includes an alternatively assembled regulating valve assembly, the housing base component 416 could be formed without those features selected therein, advantageously .
[0287] Referring now to figure 42, the service cover assembly arrangement or service cover 417, for the example shown, is a two-component arrangement comprising: a central cover 491 viewable in figure 59; and a peripheral mounting ring 490, shown in figure 60. These components are discussed below. They would typically be snapped together, with the ring 490 rotating in relation to the central cover 491, and operated together as a service cover 417.
[0288] In figure 49, the filter cartridge 420 is shown in perspective view. It is also visible in figures 50-54, discussed below.
[0289] Mounting 401 can be mounted for use by installing cartridge 420 (figure 49) on the housing base component 416 (figure 57), however with the fitting of a regulating valve on it; and positioning the service cover 417 in place on the upper end 416e (figure 56) of the housing base component 416.
[0290] From the descriptions detailed below, and by analogy to the previously described modality, it will be understood that many of the features described here not only refer to the configuration for good space utilization and effective and efficient filter operation, but also to help ensuring that the cartridge that is positioned in an assembly in accordance with the present disclosure is a suitable cartridge for that assembly and is properly positioned for appropriate use. Many of these characteristics are variations of those previously discussed with respect to the arrangement in Figure 1.
[0291] Inlet arrangement 403, outlet arrangement 404 (figure 39) and drain arrangement 405 can be fixed in conduits suitable for gas flow and liquid gas as appropriate. As with assembly 1, during typical service operation, for a complete 401 installed assembly, there is no specific need to separate (detach) the housing or tubing, depending on the nature of the tubing attached. Indeed, typically the base housing component 416 remains in place and does not move; and if the tubing attached to the inlet arrangement 403 is sufficiently flexible, the access cover 417 can be removed from the housing base 416 without disconnecting the tubing from the inlet 403.
[0292] In figure 55, a detailed perspective view of assembly 401 is shown. In figure 55a, an enlarged view of the selected portions of figure 55 is shown. In figure 55a, the portions shown refer to the housing base component 416 and the regulating valve assembly 410.
[0293] In figure 55a, the housing base component 416 is shown in perspective view, as comprising side wall 416s, bottom 416b with drain arrangement 405 in it, open upper end 416e and mounting shim arrangement 418.
[0294] Also visible in figure 55a, is the lock projection arrangement 436 on an external surface of the adjacent side wall 416s, and spaced from the top edge 416e. In addition, spaced around the upper portion of the side wall 416x, recesses 416r are positioned. As will be understood from the discussion below, the specific assembly 401 is configured so that the service cover 417 is mounted on the housing base 416 by a rotating ring, using a non-threaded rotating lock arrangement. Alternative connection methods are possible, but non-threaded rotational connection is convenient. As will be understood from the additional discussion below, the lock projection arrangement 436 is positioned to be engaged by a portion of the service cover 417 in a way that inhibits undesirable unlocking during use, for example, due to equipment vibration. .
[0295] Still referring to figure 55a, at 505 the gas flow outlet arrangement is represented, in communication with orifice 435. Orifice 435 is mounted on, and typically molded integral with, the side wall 416s. Duct ring 438 is provided internally in the orifice 435, also typically molded integrally with the housing base 416. An interior 438i of the ring 38 is in direct flow communication with the interior 404i of the gas flow arrangement 404. Thus , for the assembly 401 shown, for gases to reach the outlet 404 they must pass into and through the interior 438i of the ring 438. Alternative constructions, however, are possible.
[0296] In figure 55a, in 440, a diaphragm valve element is represented. In 441, a bias arrangement is represented, in the example shown configured as a spiral spring 441s. When assembled, cover 411 is positioned over, and fastens, diaphragm 440 over orifice 435, closing orifice 435. Diaphragm 440 is held spaced from end 438 and inner ring 438 by bias element 441.
[0297] The operation of the regulating valve arrangement 410 can be analogous to the regulating valve arrangement 10 previously described. The general point is that for gases to reach tube 404, they must pass over the edge 438e and to the interior 438i of tube 438. It is that flow that is regulated by valve arrangement 410 including diaphragm valve 440, sometimes characterized as a bearing articulation valve. It is noted that a pressure fitting can be used to secure the cover 411.
[0298] With reference to figure 57, a top plan view of the housing base 416, can be seen for the example arrangement shown, the housing base component 416 includes a side wall 416s having a lower section 416d having a circular interior general, and an upper 416u section having a non-circular interior (though it could be circular in some applications). The upper section 416u includes a sealing surface directed radially inward 416us against which a cartridge seal engages, to form a seal when the cartridge is installed. This is further discussed below. The 416us surface can be circular, but in the example it is non-circular. The 416us non-circular sealing surface, for the example shown here, is elliptical, having a center that corresponds to the central geometric axis X, as does the circular section 416d.
[0299] It is also noted that in some applications of the techniques described here, the upper sealing surface 416us can be configured circular and can actually be the same size as the lower section 416d. However, the specific arrangement represented and discussed is advantageous for reasons discussed below.
[0300] In figure 57, an inner surface 416z of the bottom 416b can be seen. The inner surface 416z of the bottom 416b includes a plurality of radial ribs 441 therein, which, in part, provides resistance to the bottom surface 416z.
[0301] In figure 57, at 405o, an opening in a lower drain arrangement 405 is shown. Positioned adjacent to the opening 504o for the drain 405, figure 47, the projection arrangement 444 is provided. The projection arrangement 444 generically projects from a portion of the bottom surface 416z in a direction away from the drain 405 and generally towards the upper end 416e from base 416; that is, toward service cover 417, figure 44. The projection arrangement 444 is configured to interact with the filter cartridge operating 420 in modes discussed below and analogously to the projection 44 and cartridge 20 discussed above. For the specific arrangement shown, the projection arrangement 444 is a (first) element of a (first) receiving / projection arrangement, of which another (second) element is positioned in the cartridge 420. For the specific assembly 401 represented, the projection arrangement 444 is (optionally) also art of a rotational indexing arrangement from cartridge to housing component (base) in relation to housing base component 416. This helps to ensure that cartridge 420 is a cartridge suitable for assembly and is properly oriented.
[0302] Referring again to figure 57, tongues projected radially inward 416k, formed by recesses 416j, figure 40, are visible. The 416k tongues are analogous to the 16k tongues, and are oriented adjacent to the 416z bottom, where they can (optionally) match selected portions of a cartridge 420 as discussed below.
[0303] Attention is now directed to figure 49, in which the filter cartridge 420 is represented in top perspective view. The filter cartridge 420, generally comprises means 421 positioned in extension around the open interior 422. The means 421 is positioned in a location between first and second opposing parts 423, 424. The means 421, as with the means 21, is generically configured to receive gases directed through it, and to allow coalescence of liquid in the 421 medium while retaining certain contaminants. Medium 421 can be chosen from a variety of mediums and can be in accordance with medium 21 discussed above. The specific cartridge 420 shown analogously to the cartridge 20 is configured to be vertically oriented when installed. This orientation is typically with the first end piece 423 oriented as an upper end piece and the second end piece 424 oriented towards the lower or lower end piece.
[0304] With reference to figure 49, attention is directed to the first extreme (upper) part 423. The first extreme part 423 includes an outer perimeter region 423p, which the example shown includes, positioned in it, an arrangement or element of housing seal 450. In that case, the housing sealing element or arrangement 450 comprises first and second sealing elements 450a, 450b, although alternatives are possible. The housing seal arrangement 450 is configured such that when cartridge 420 is installed in housing 402, the housing seal arrangement 450 is positioned and configured to form a seal with a portion of housing 402. In the example, a portion the housing sealing arrangement 450, in particular sealing element 450a, is configured to form a seal with a portion of a housing base 416; and, a portion 450b of the housing seal arrangement 450 is located in position to form a seal with a portion of the access cover 417. The housing seal arrangement 450, analogously to the housing seal element 50, is an arrangement of “release” seal.
[0305] The specific housing sealing element 450 represented is a position on the first end piece 423 oriented as the first and second perimeter housing sealing elements 450a, 450b. Thus, the housing sealing element 450 comprises at least one housing sealing element, in perimeter, in this case, two “perimeter” housing sealing elements 450a, 450b. By "perimeter" in this context, it is meant that the referenced sealing element surrounds a portion of the outer perimeter of the end piece 423, in which it is positioned. In that case, it is observed that a portion of the end piece 423, generically indicated as 423x, figure 49, projects radially outwardly between the housing perimeter housing sealing elements 450a, 450b. This operates as a “vertical spacer arrangement” discussed in detail below.
[0306] Regarding the housing sealing arrangement 450, attention is now directed to the perimeter sealing element or portion 450a. This portion is located to seal the housing base 416. In particular, attention is directed to figure 55a, in which the housing base 416 is represented. It is observed that the housing base 416 in figure 55a is represented with the regulating valve mounting arrangement 410 in detailed view.
[0307] With reference to figure 55a, in 416us, the sealing surface for engagement by the perimeter seal 450a is represented. This will form the releasable seal, shown in the cross-sectional view of figure 42 in 451.
[0308] Seal 451 will generally be referred to as “radially directed” seal, since the seal strength is generally directed towards or away from the central geometric axis X. The specific perimeter seal 451 formed by the seal element 450a is a perimeter seal directed radially "outward" as the sealing element 4650a seals in a surrounding portion of a housing with faces in one direction away from a geometric axis X.
[0309] The sealing element 450a can be configured in a variety of specific formats. For example, it can be defined on a plane, orthogonal to the geometric X axis, as shown. It can, however, be oriented in one place by extending at an acute angle to a plane perpendicular to the geometric axis X if desired. The plane on which seal 450a rests (if seal 450a is flat) is referred to here as a “seal plane”. The term "sealing plane" is intended to refer to the central plane of the sealing element 450a on which the seal rests to form the outwardly directed radial seal.
[0310] The sealing element 450a can define a seal in a circle around the central geometric axis X, if desired. This would be a “circular perimeter” to the sealing element 450a. The specific sealing element 450a depicted, however, defines a “non-circular perimeter pattern”. That is, its outer perimeter, in the example shown, does not define a circle around the central geometric axis X. The specific “non-circular outer perimeter” defined by the sealing element 450a is oval or elliptical. Alternatives are possible.
[0311] Referring to figure 55a, the surface 416us below is not circular, but instead (to match the sealing element 450a) it is defined in an “elliptical” pattern. This will provide some advantage in: ensuring that cartridge 420 is the appropriate cartridge for the 401 system in question; ensure that cartridge 420 is positioned securely after installation; and ensuring that cartridge 420 is properly oriented when installed.
[0312] With reference again to the cartridge 420, figure 49, the sealing element 450b is also defined as a perimeter housing seal. In this case, it is configured to form a seal 452 for sealing against the sealing surface 417x of the access cover 417, figure 42. The specific sealing element 450b shown is also a sealing plane orthogonal to the central geometric axis X, however alternatives are possible. In addition, the sealing element 450b can define a circular or non-circular outer perimeter. However, in the specific example shown, the sealing element 450b defines a circular outer perimeter.
[0313] With reference again to figure 49, for the represented cartridge, 420 the sealing elements 450a, 450b are positioned on the same end piece 423, and are positioned vertically (or axially) spaced from each other, that is, spaced from each other in the longitudinal extension direction of the central geometric axis X. The spacing is with the surfaces that form the seals typically spaced vertically at least 0.5 mm apart, typically at least 1 mm apart, although alternatives are possible. The principles relating to the spacing of such sealing elements are described, for example, in USSN 61 / 503.063 and USSN 61 / 664.340, which are incorporated here by way of reference.
[0314] Still with reference to figure 49, the first end piece 423 of the cartridge 420 includes an axial locator projection element 453 therein. The axial projection element 453 is part of the receiver / projection arrangement that ensures rotational orientation with an access cover assembly 417, discussed below.
[0315] Furthermore, the end piece 423 includes a spacer arrangement 423s including at least one spacer element 423m oriented between the first and second sealing elements 450a, 450b, and in the example shown projecting radially outward from the central geometric axis X to a location additionally radially out of a radial projection extension of any of the elements 450a, 450b. This comprises a vertical spacer arrangement discussed below, in accordance with the general principles of USSN 61 / 503.063 and USSN 61 / 664.340 incorporated herein by reference. In the example shown, the spacer elements 423m comprise a plurality of tongues 423t spaced around the end piece 423. The tongues 423t not only operate for spacing, but are locating tongues for engagement with the housing base 416. With reference to the top plan view of figure 50, the specific arrangement 423m comprises four spaced tabs 423t although alternative numbers (typically 3-6, inclusive) are possible.
[0316] With reference to the housing base 416, figure 58, it is observed that the recesses 416r are located to receive the tabs 423t therein, as the cartridge 420 is lowered into the housing base 416. The tabs 423t will project through receivers 416r as discussed below and as shown in figure 46, in which the access coverage is not represented.
[0317] With reference again to figure 49, the upper end piece 423 is represented as having a gas flow opening 456 extending through it, in communication with the open filter interior 422. The opening 456 for a “flow flow” system inside to outside ”is shown, it is an opening that allows gas flow entrance, with gases to be filtered, to the interior 422. For the specific assembly shown, the upper opening 456 receives, projecting through it, a portion of pipe 403x inlet, as discussed further and analogously to cartridge 420 discussed above. Aperture 456 can be sized and configured analogously to aperture 51 if desired. However, alternatives are possible.
[0318] Attention is now directed to figure 54, a cross-sectional view of cartridge 420. Attention is now directed to the first end piece 423. In the example shown, the first end piece 423 is a multi-piece construction comprising: one preformed frame portion, typically rigid 423x and a sealing arrangement 450, in this example comprising sealing elements 450a, 450b, attached to the frame portion 423x. In the example shown, the sealing elements 450a, 450b each independently comprise an o-ring 450x, 450y respectively, although alternatives are possible. In figure 54, the cross-sectional view taken through the larger perimeter dimension of each of the sealing elements 450a, 450b. This means that with respect to the seal 450a, the cross section is through the long geometry axis or the larger geometry axis of the elliptical perimeter. Since the sealing element 450b in the example shown is circular, the dimension therethrough in figure 54 is merely a diameter.
[0319] Here, the largest radial extent of a sealing element will be referred to as its "dimension in the largest cross section." For an elliptical seal, this would be the length of the longest geometric axis as measured through an outer perimeter of the sealing element 450a. For a circular seal, this would be an outer diameter as measured through an outer seal perimeter 450b. With reference to figure 54, it can be seen that the larger perimeter dimension of the first sealing element 450a is larger than a larger perimeter dimension of the second sealing element 450b. This will be typical for a modality as shown in figure 54, but it is not critical to obtain any advantage for the arrangements according to the present disclosure. Typically, the larger perimeter dimension D1 of a first sealing element 450a is at least 0.25 mm larger than a larger perimeter dimension of the second sealing element 450b, often at least 0.5 mm (usually at least 1 mm ) higher and in some modalities substantially more. In this regard, attention is directed to the principles described in USSN 61 / 503.063 and USSN 61 / 664.340 incorporated here by way of reference.
[0320] Attention is now directed to figure 51, a side elevation view of cartridge 420, and to the cross-sectional view of figure 52. The specific cartridge 420 shown includes a projection arrangement 453, referenced earlier, which projects to upwards from the central frame portion 423x of the frame part 423 in a general direction away from the end piece 424 and middle 421. The projection arrangement 453 comprises at least one projection 453a, and can comprise more. Typically, the projection 453a, analogously to the projection 55a, extends away from the axis 421 by a distance of at least 5 mm, usually at least 10 mm and often at least 15 mm at full height, from an adjacent portion of the central frame portion 423x. Again, such a projection arrangement 453 can be used to facilitate radial orientation of the access cover 417 with respect to the cartridge 420, in the housing base 416, as discussed below.
[0321] With reference to figure 52, for the specific cartridge 420 shown, the projection arrangement 453 also comprises a cable arrangement 455. The cable arrangement 455 facilitates the action of holding the cartridge 420 for installation in a housing base 416 and remove it from there. The specific cable arrangement 455 comprises at least one cable element 455b, in this case having an upper rail 455r under which a portion of a person's hand can fit, to facilitate the holding action. In the example, the cable element 455 does not include any opening therethrough, although alternatives are possible.
[0322] Still with reference to figure 52, for the specific cartridge 420 shown, a portion 423d of the perimeter 423p and sealing element 450 is positioned surrounding one end, in the example upper end 421u of the means 421. This is analogous to the previously described modality . Thus, the sealing element 450a and a portion of the perimeter 423p, generically indicated at 423d, extend axially towards the end piece 424 of the upper end 421u of the middle 421. Typically, the amount of extension is at least 1 mm, usually at least at least 3 mm and often at least 5 mm and in some cases at least 7 mm, for example, in the range of 1-20 mm, often 3-20 mm and in some cases 5-20 mm and in some cases 7-20 mm. This can provide advantages analogous to the arrangement of figures 1-37 discussed above.
[0323] Thus, and in more general terms, the first end piece 423 includes a perimeter ring 423p having a portion 423d that projects at least 1 mm, typically at least 3 mm towards the second end piece 424 while also completing the action of surrounding the medium 421. That portion 423d can project at least 5 mm and often at least 7 mm, for example, an amount in the range of 7-20 mm, inclusive or more.
[0324] As with the previously described modalities, and to accommodate cartridge manufacture 420, cartridge 420 comprises multiple components adapted together to form the rigid structural frame thereof. These components can be seen in figure 52, as comprising: upper end piece 423; and central cartridge holder 461. In the example shown, the central cartridge holder 461 and lower end piece 424 can (optionally) be formed as a single integral unit, for example, molded from plastic. The end piece 423 is then attached to the support 461. The typical approach is a snap fit approach as shown, and discussed below. However, alternatives such as sonic welding, heat welding and / or adhesive are possible.
[0325] As with the previously described modality, alternative constructions can be made. For example, the first end piece 423, second end piece 424 and center support 461 can be separately made and can even be joined, for example, as a snap fit or other connection. However, the specific example described, involves having the support 461 and second end piece 424 integral, with the first end piece 423 separately made and attached to it.
[0326] In addition, the upper end piece 423 can (optionally) be provided with a rib arrangement to engage the medium, analogously to the end piece 23 previously discussed. Such rib arrangement is visible in figure 52, in 601.
[0327] Attention is now turned to figure 61, in which support 461 (with end piece 424 attached to it) is represented in a top perspective view. The support 461 comprises a plurality of vertical ribs 461v having a plurality of interconnecting ribs 461r therein. This forms a porous structure for the flow of gas and liquid through it. The holder 461 has a first end 461u on which, in use, is an upper end; and a second opposite end 461o on which, in use, is a lower end. The end piece 424 is attached to the lower end 461o, typically because it is integrally formed with it.
[0328] With reference to figure 52, the end piece 423 is configured with projections 423k in it, configured as hook projections so that when the end piece 423 is pushed against the upper end 461u of the support 461, hooks 423k will deflect inwards until they can engage under the matched portions of the 461u end. This will provide a snap fit connection between end piece 423 and holder 461. This will facilitate assembly, similar to the assembly of cartridge 420, in which medium 421 can be wrapped around holder 461, before end piece 423 is put in place. To facilitate assembly between end piece 423 and support 461, support 461, figure 61 is provided with tabs 461t oriented to fit openings 423a (figure 49) in end piece 423.
[0329] Attention is directed back to figure 52 and the lower end piece 424. For the example shown, the lower end piece includes a 424x projection that extends into the cartridge 422 and towards the end piece 423. Projection 424x defines a receiver 424r that receives a projection on the housing base 416 extending thereon. The receiver 424r is preferably "eccentric", that is, positioned and / or shaped so that it can only receive the projection 444, in the housing base 416, in a rotational orientation identified only between the cartridge 420 and the housing base 416. This will be similar to the arrangement of the first modality discussed above.
[0330] Typically, the projection 424x, and also the receiver 424r, extend at least 5 mm normally at least 10 mm and often more towards the end piece 423 when measured from the end 421b of the middle 421. Similar dimensions (and relative dimensions) of the previously described modality can be used.
[0331] Still with reference to figure 52, the specific end piece 424 has a closed central portion 424c in extension through the open interior 422. By this it means that there is no opening through the end piece 424r in the region surrounded by the middle 421. Alternatives are possible.
[0332] It is noted that the cartridge 420 may (optionally) be provided with a lower drain arrangement of the type generally discussed in the publication US 2010/0031940 (USSN 12 / 084.164) incorporated here by way of reference, and as discussed above with respect to to cartridge 20. With reference to figure 61, the lower end piece 424 is provided with an outer perimeter 424s, comprising a plurality of spaced perimeter petals or perimeter projections 424t with perimeter recesses 424y between them. Some or all of the recesses 424y (ie, selected recesses) can be configured large enough to project under the middle 421, figure 54. When this is the case, liquid can drain directly down from the middle 421 through the recesses 424y, analogously to US 2010/0031940. If desired, an opening arrangement can be placed in extension through the end piece 424 (under the middle 421) to facilitate drainage.
[0333] Attention is now drawn back to Figure 39, and in particular to service coverage or access coverage 417. Access coverage 417 can include many features analogous to access coverage 17, previously discussed. In this way, the access cover 417 comprises: external perimeter mounting ring 490; central cover section 491; and (optionally) bleed valve or 414 evacuation valve arrangement.
[0334] Although alternatives are possible, for the specific cover assembly 417 shown, the mounting ring 490 is rotatable with respect to the cover section 491 so that the mounting ring 490 can be rotated to secure the cover assembly 417 on the housing base 416, without turning the cover section 491.
[0335] In figure 60, a top perspective view of the 490 mounting ring is shown. It can be seen that the mounting ring 490 includes a perimeter ring 490r having a plurality of ears, projections or stops directed radially inward 490s. These are dimensioned and located so that they can be rotated to a location under projections 436, figure 55a, on the housing base 416 to secure the access cover 417 in position. This coupling is shown in the cross sections of figures 42-45.
[0336] Still with reference to figure 60, the mounting ring 490 is generally configured with a central opening 492 through it, allowing the ring 490 to be positioned on, and slidably surrounding, the central section 491, figures 42 and 43.
[0337] With reference again to figure 60, the outer perimeter 493 of the perimeter ring 490, figure 60 is provided with spaced claws 494 to facilitate gripping and rotation.
[0338] Still with reference to figure 60, attention is directed to the projection arrangement 490t positioned along the inside of ring 490. The projection arrangement 490t is positioned to provide an anti-rotation interaction, just with the 423t spaced tabs on the filter cartridge, when ring 490 is turned to a locked position. This interaction is shown in figures 63 and 64, which are seen in cross section through the related portion of assembly 401. The interaction is sufficient to inhibit unwanted rotation, but not so great that it cannot be overcome by manual force.
[0339] The cover section 491, figure 55 analogously to the outer section 91, can be provided with a radial interference portion shown in 501, so that after the ring 490 is pressed on the cover section 491, it tends not to separate the unless forced. Some interference can be used to affect this.
[0340] With reference again to figure 55, attention is directed to the assembly of bleed valve 414. The assembly of bleed valve 414 is shown in a detailed view in figure 55, on the opening of bleed valve 415 through the section of cover 491. The bleed valve assembly 414 comprises the valve element 507 seated, when the valve arrangement 414 is closed, over the access opening 505. The valve element 507 is positioned in and supported by the disc 508. The disc support structure is provided to hold valve element 507 in the closed position (until it is overcome by internal pressure in assembly 401) by arrangement of propensity 509, in the example shown comprising a spring. Assembly 414 includes a cover 414c.
[0341] In figure 59, the bottom perspective view of the coverage section 491 is represented. It can be seen that the cover section 491 includes a receiver projected upwards 491r on an internal surface of the same, positioned to receive projecting the projection arrangement 453 (that is, cable 455) on it, figure 52, in the cartridge 420, in the example shown, only when cover section 491 is prepared rotationally aligned with respect to cartridge 420. Thus, assembly 401 includes a rotational alignment (indexing) arrangement of “cartridge access cover” or “cartridge for access cover” , in this case partly comprising a receiver / projection arrangement that allows only a rotational orientation between the two.
[0342] The rotational alignment between: filter cartridge 420 and housing base 416; filter cartridge 420 and access cover 417; and access cover 417 and housing base 416 may be of importance in arrangements including features selected from the features described here. For each of these, a receiver / projection arrangement or a plurality of receiver / projection arrangements can be used to achieve the desired result.
[0343] With reference first to the alignment and rotational orientation of the filter cartridge, attention is directed to the receiver / projection arrangement identified by the projection 444 on the housing base, and the receiver 424r on the cartridge. These are shown, for example, in figure 44. Since the projection 444 extends upward into the cartridge 420, and is eccentrically positioned with respect to the central geometric axis X, it can only be received at the receiver 424r, which is also eccentrically positioned with respect to the central geometric axis X, if the cartridge 420 is rotated to a suitable orientation for alignment. In the example shown, only a rotational alignment between the cartridge 420 and the housing base 416, around the central geometric axis X, will allow the cartridge 420 to be lowered with the receiver 424r receiving the projection 444. (Alternatives are possible). Of course, the receiver 424r and projection 444 can also be shaped so that only alignment is possible, even if centrally positioned.
[0344] It is also observed that additional rotational alignment is provided by the 424y spaced receivers, figure 61 being sized, spaced and located so that the selected ones are received in the 416k projection on the housing base 416, figure 57, projecting in the same as the cartridge is lowered. This helps to stabilize the cartridge. It also helps to ensure that the 420 cartridge is suitable for the particular assembly.
[0345] The rotational alignment between the cartridge 420 and the access cover 417 is provided by the access cover 417 having receiver 491r, figure 59 in the same oriented to receive projecting in it, the projection 453 (cable 455) in the cartridge 420, figure 49. This interaction is shown, for example, in figures 44 and 45. It operates as a rotational alignment (indexing) arrangement of cartridge-to-housing access coverage.
[0346] It is observed that there is an additional rotational alignment provided by the non-circular sealing element 450a aligning with its sealing surface 416us, figure 55a, as the cartridge 420 is lowered. Here, the oval shape matched to the tube allows limited possible orientations.
[0347] Regarding the alignment of the access cover for the housing base, attention is directed back to figure 59, and in particular to the projection 520 that extends downwards from the 403 entrance. The projection 520 includes lower extension 521 and is dimensioned and oriented so that the access cover 417 can only be fully lowered, if the projection 521 is properly oriented in relation to the projection arrangement 444 in the housing base 416. Typically, the lower projection or extension 521, then, it will extend to a location below a projection top 444, typically at least 3 mm lower, usually at least 5 mm lower.
[0348] It is noted that the portions of the 520 projection can be provided (optionally) with an inertial impact medium arrangement analogous to the arrangement of figures 1-37 discussed above.
[0349] In figure 62, the alignment between the various characteristics described in the cartridge and tube housing base 520 is shown in cross section.
[0350] The 401 assembly includes a vertical spacer arrangement in general accordance with USSN 61 / 503.063 and USSN 61 / 664.340 incorporated herein by reference. The vertical spacer arrangement can be understood by reference to figures 42 and 43. In particular, spaced projections 425t, discussed with respect to cartridge 420, figure 49, can be seen projecting radially outward in a direction away from the central geometric axis X over a distance greater than an extension amount of the sealing arrangement 450, i.e., the individual sealing elements 450a, 450b. Indeed, the spacers 423t extend sufficiently apart, and in an appropriate location, to be positioned between a portion of the cover element 491 and the upper end 416e of the bottom of the housing 416. Unless a cartridge 420 is positioned, which includes such an arrangement of spacer, typically the access cover 491 will not be spaced far enough from the end 416e of the side wall 416 for the locking ring 490 to tighten properly when rotated. Typically, to account for this, the spacer arrangement comprising 423t will have a thickness, that is, it will result in a vertical spacing, at least 0.25 mm, typically at least 0.5 mm. IX. General observations and comments
[0351] According to the present disclosure, systems, assemblies, components, characteristics and methods are described, usable in applications involving crankcase ventilation filters. There is no specific requirement that all of the specific features described here be applied, in order to obtain any benefit under the present disclosure. Selected features, methods, techniques and components can be modified from the details shown, and can be applied without all the features, methods and components, etc., described.
[0352] In accordance with selected principles of the present disclosure, filter cartridges for use in liquid gas separation are provided. A filter cartridge, using features selected from the features featured here, can comprise an extension of filter medium that surrounds and defines the interior of an open filter; and first and second extreme parts. The medium is positioned between the first and second extreme parts. The first end piece has a central flow opening through it in gas flow communication with the open filter interior. The first end piece also includes a perimeter ring having a portion that protrudes at least 3 mm generally axially towards the second end piece while also completely surrounding the middle.
[0353] In the featured filter cartridge, the second end piece has an external receiver (typically closed) in which it protrudes into the open filter and towards the first end piece, typically a distance of at least 3 mm, often at least 5 mm, preferably at least 7 mm (and often more) from one end of the medium adjacent to the second end piece.
[0354] A housing seal arrangement is positioned on the perimeter rim in a location with at least a portion of the housing seal arrangement completely surrounding the medium. In an example arrangement shown, the housing seal arrangement includes an end directed away from the first end piece axially, and generally towards the second end piece, which forms an axially directed seal with a portion of a housing in use. The housing sealing arrangement can be molded in place on the first end piece, or it can be removably mounted on it.
[0355] In an alternative example arrangement, the housing sealing arrangement is configured to seal radially against a housing component in use. An example housing seal arrangement in this embodiment is shown, which includes two housing seal elements, spaced axially away from each other along a central geometric axis of the cartridge. However, in some alternative configurations, only a single radially directed sealing element can be used.
[0356] In the example arrangements shown, the external (closed) receiver on the second end cap comprises an eccentrically positioned receiver or receiver pocket. Typically, the closed external receiver extends into the open filter and towards a first end piece by a distance of at least 10 mm from an end of the medium adjacent to the second end piece, usually at least 15 mm in that direction, and often at least 18 mm in that direction.
[0357] Typically and preferably, the closed external receiver on the second end piece is a closed receiver having an eccentrically unique receiver pocket on it, defined by a single projection tip that projects towards the first end piece.
[0358] Typically, the first end piece includes a perimeter ring having a portion that projects at least 3 mm towards the second end piece while completely surrounding the middle. Typically, the projection amount is at least 5 mm and often at least 7 mm.
[0359] The medium can be configured in a variety of modes. Example arrangements are described in which the medium comprises a multilayered medium loop. That is, the medium would comprise a layer of material rolled up to form a medium package. This winding, for example, can be around a central cartridge holder.
[0360] In an arrangement described, the first extreme piece has an inner surface directed towards the middle, the inner surface including an optional rib arrangement in it that presses against an end of the middle. The rib arrangement may be one or more ribs, and typically includes at least one continuous rib extending around the central geometric axis of the cartridge. When a plurality of ribs are used, they are typically oriented concentrically, each being continuous in extension around the central geometric axis of the cartridge. Typically, there is at least one rib, usually at least two, and in one example described, at least three. The optional rib arrangement can be used with any mode described.
[0361] In an example described, the central flow opening in the first extreme part is centered on a central geometric axis of the cartridge, although alternatives are possible.
[0362] In an example arrangement described, the first end piece includes a receiver opening arrangement therethrough, spaced from the central flow opening. The receiver opening arrangement, in an example described, comprises a plurality of receiver openings spaced from the central flow opening and oriented to receive projections on a central cartridge holder.
[0363] In the examples described, the cartridge includes a preform comprising a second end piece and central cartridge holder; with the first extreme part being fixed on the preform, for example, by pressure fitting, heat welding, sonic welding or adhesive.
[0364] In a featured example arrangement, the first end piece has an inner surface and a first element of a (first) receiver / projection arrangement in it; the middle extension surrounds a central cartridge holder; and the center cartridge holder includes a first remote end of the second end piece. The first end of the central cartridge holder, starting from the first end piece, includes a second element of the first cartridge projection / receiver thereon.
[0365] In an example arrangement, the first cartridge receiver / projection arrangement is a rotational alignment indexing arrangement configured in such a way that the first end piece can only fully engage the first end of the center cartridge holder, with an inner surface of the extreme filter piece directed towards the middle, in one (or more) defined rotational orientations selected in relation to the central cartridge axis and the central cartridge holder. That is, the first extreme part cannot be attached to the central cartridge holder only in any rotational orientation, but only in selected defined orientations. In an example shown, the first cartridge projection / receiver arrangement is configured so that the first end piece can only fully engage the center cartridge holder in a single rotational arrangement.
[0366] In a described assembly, the first element of the first receiver / cartridge projection arrangement is a receiver arrangement in the first extreme part; and the second element of the first cartridge projection / receiver arrangement is a projection arrangement in the central cartridge holder. A specific example involves a plurality of receiver openings through the first end piece, and a plurality of projections on the central cartridge holder, configured to engage the openings. A specific arrangement in which one of the receiver openings has greater opening width, and one of the plurality of projections in the central cartridge holder is sufficiently wide so that it can engage only the widest receiver opening provides rotational orientation. In a typical arrangement, the second element of the receiver / projection arrangement comprises a plurality of flexible elements.
[0367] Typically, the receiver openings in the first end piece remain at least partially open, even when adapted with the flexible hook elements for air flow communication with the open filter interior partly through the receiver openings.
[0368] Cartridges are described which preferably include an axial overlapping drain arrangement of optional medium therein. An example of such an arrangement is described, in which the second end piece includes an outer perimeter with a plurality of recesses in it that extend to a location below the middle.
[0369] An example cartridge is described in which the first end piece includes an outer surface with a projection arrangement that protrudes from there in a direction away from the middle. The projection arrangement typically comprises at least one projection element that projects at least 5 mm from the adjacent portions of the first end piece in a direction away from the middle, typically projecting at least 10 mm in this way.
[0370] In an example cartridge described, the projection arrangement comprises at least two projection elements, each of which protrudes at least 5 mm, typically at least 10 mm, from adjacent portions of the first end piece.
[0371] In one example shown, the projection arrangement comprises two radially spaced projection elements that are radially asymmetrically spaced in relation to the central geometric axis of the cartridge. One or two projection elements may comprise cable element (s). A preferred cable element definition is one in which each cable element has an axially oriented portion and an outwardly radially oriented rail or ferrule for easy handling.
[0372] Typically, each cable element (it is more than one) is solid, that is, it has no opening through it, and each cable element (or projection element) is bent. In one example, one or more cable elements extend over a radial arc in the range of 50 ° - 150 ° inclusive, around the central geometric axis of the cartridge, although alternatives are possible.
[0373] Typically, the housing seal arrangement is an axially directed seal having a lower seal end directed away from the first end piece and towards the second end piece. Again, the axially directed seal can be molded in place on the first end piece.
[0374] Furthermore, according to the descriptions of the present invention, the filter cartridge can be defined with characteristics selected from the characteristics characterized and does not include all the characteristics represented and described here. In one example, the filter cartridge includes an extension of filter medium that surrounds and defines the interior of an open filter and first and second end pieces, with the medium positioned between the end pieces. The second end piece in such an assembly could, for example, be a closed end piece having an external receiver closed in it, projecting into the open filter and towards the first end piece. The cartridge would include a central cartridge holder around which the medium is positioned and to which the first end piece is attached, for example, by pressure fitting, heat welding, sonic welding, or adhesive. Of course, the filter cartridge can include additional features as featured here.
[0375] According to an additional definition provided here, a filter cartridge can comprise an extension of medium that surrounds and defines the interior of an open filter and first and second extreme parts, with the medium between them. The first extreme part would include an external surface with a projection arrangement that projects from it in a direction away from the middle, the projection arrangement being generically as characterized above, and can comprise, for example, a first (and in in some cases a second) projection element that can operate as a cable element. Other variations can be as characterized above.
[0376] In addition, according to the present disclosure, crankcase ventilation filter assemblies are described. The assemblies typically include a housing that defines the interior of a housing including a gas flow inlet arrangement; gas flow outlet arrangement; and a liquid drain outlet arrangement. A filter cartridge according to the descriptions provided here would be operative and removably positioned inside the housing.
[0377] Typically the housing includes a housing base and a removable service cover, the housing base including a liquid drain arrangement in the service cover and including a gas flow inlet arrangement thereon. The gas flow inlet arrangement may comprise a gas flow inlet tube including an inner tube section that protrudes towards the housing base and into the filter by extension opened through a central flow opening of the first extreme part of a filter cartridge.
[0378] An arrangement is described in which the inner tube section includes an inertial impact medium plate extending through it, and gas flow outlet passage through the inner tube section. In addition, an arrangement is shown in which the inner tube section includes a lower extension that projects to a location in the lower housing than an upper end of a projection on the cartridge that defines the closed receiver access on the filter cartridge; typically to a location at least 3 mm lower, usually at least 5 mm lower, and sometimes at least 10 mm lower. Indeed, the lower end of the inlet tube may include an outer perimeter having a perimeter (for example, recess) in the same defined to match, that is, receiving projecting through it, the projection of the receiver extending upwards from a lower end of the filter cartridge.
[0379] Typically, the arrangement is such that the filter cartridge includes one or more of the features characterized above.
[0380] In addition, according to the present disclosure, a method of assembling a filter cartridge for a crankcase vent filter assembly is described. The method generally comprises steps of positioning medium in a central cartridge holder and around the central interior and although an extreme piece for the central cartridge holder overlapping with one end of the medium. The step of positioning the medium may comprise wrapping the medium in a central cartridge holder.
[0381] The assembly method may include providing as the first extreme part, an extreme part having one or more of the various characteristics characterized above. The engagement may involve a snap fit, such as a flexible receiver / hook arrangement also described here. The coupling can be by alternative means.
[0382] Here, two example modalities are described in detail, the modality of figures 1-37 and the modality of figures 39-64. As indicated here, the characteristics of each can be implemented in the other, advantageously.
[0383] Again, there is no specific requirement that a method, assembly, component, feature or technique involve all the details and advantageous features described with respect to the preferred modality represented, to obtain any advantage in accordance with the present disclosure. LEGENDS TO FIGURE 260 air filter 251 engine 1 filter

权利要求:
Claims (14)
[0001]
1. Filter cartridge (20) for use in gas / liquid separation, the filter cartridge (20) comprising: (a) an extension of filter medium (21) surrounding and defining an open filter interior (22); (b) first and second end pieces (23, 24); (i) the medium being positioned between the first and second extreme parts (23, 24); (ii) the first end piece (23) having a central flow opening through it in gas flow communication with the open filter interior (22); and (iii) the first end piece (23) includes a perimeter ring having a portion projecting at least 3 mm towards the second end piece (24) while completely surrounding the middle; (c) a housing seal arrangement (50) positioned on the first end piece (23) at a location with at least a portion of the housing seal arrangement (50) completely surrounding the medium; (d) the housing sealing arrangement (50) including: a first sealing member located in a position completely surrounding the medium; and a second sealing element, CHARACTERIZED by the fact that: (e) the medium comprises a multilayered coil of medium; (f) the second end piece (24) has a closed external receiver (24u) projecting on the open filter and towards the first end piece (23); (g) the external receiver (24u) in the second end piece (24) comprises an eccentrically positioned receiver pocket (78) defined by a projection tip protruding into the open filter (22) and towards the first end piece (23 ), a distance of at least 10mm from a middle end adjacent to the second end piece (24); (h) the cartridge includes a first preform comprising the second end piece (24) and a central cartridge holder; and (i) the first end piece (23) is part of a second preform attached to the first preform after the medium is positioned in the first preform.
[0002]
2. Filter cartridge (20), according to claim 1, CHARACTERIZED by the fact that: (a) the first extreme part (23) has an internal surface directed towards the middle; (1) the inner surface including a rib arrangement thereon; the rib arrangement pressing against one end of the middle.
[0003]
Filter cartridge according to any one of claims 1 to 2, CHARACTERIZED by the fact that: (a) the first end piece (23) includes a receiver opening arrangement spaced through it from the flow opening central.
[0004]
4. Filter cartridge (20) according to any one of claims 1 to 3, CHARACTERIZED by the fact that: (a) the first extreme part (23) has: an internal surface; and a first element of a first cartridge projection / receiver arrangement; (b) the filter medium extension (21) surrounds a central cartridge holder; and (c) the center cartridge holder includes a first remote end of the second end piece (24); (1) the first end of the central cartridge holder having a second element of the first cartridge projection / receiver arrangement thereon; (d) the first cartridge receiver / projection arrangement being also a rotational indexing arrangement configured in such a way that the first end piece (23) can only fully engage the first end of the central cartridge holder, with an internal surface of the extreme filter piece directed towards the middle, in one or more defined rotational orientations selected in relation to a central cartridge axis and the central cartridge holder.
[0005]
5. Filter cartridge (20) according to any one of claims 1 to 4, CHARACTERIZED by the fact that: (a) the second extreme part (24) includes an axial overlapping drain arrangement of medium in it.
[0006]
6. Filter cartridge (20) according to any one of claims 1 to 5, CHARACTERIZED by the fact that: (a) the housing sealing arrangement (50) is an axially directed seal having a lower sealing end directed towards away from the first end piece (23) and towards the second end piece (24).
[0007]
7. Filter cartridge (20) according to claim 6, CHARACTERIZED by the fact that: (a) the axially directed seal is molded in place on the first end piece (23).
[0008]
Filter cartridge (20) according to any one of claims 1 to 7, CHARACTERIZED by the fact that: (a) the housing sealing arrangement (50) includes a first radially directed sealing element.
[0009]
9. Filter cartridge (20) according to claim 8, CHARACTERIZED by the fact that: (a) the housing sealing arrangement (50) includes a second radially directed sealing element.
[0010]
10. Filter cartridge (20), according to any one of claims 1 to 9, CHARACTERIZED by the fact that: (a) the cartridge includes a vertical spacer arrangement projecting radially externally beyond an external extension more radial first and second sealing elements.
[0011]
11. Assembly of crankcase ventilation filter (1) FEATURED for comprising: (a) a housing (2) defining a housing interior (2i) and including a gas flow inlet arrangement (3), an outlet arrangement gas flow (4), and a liquid drain outlet arrangement (5); and (b) a filter cartridge (20) as defined in any one of claims 1 to 10 operatively and removably positioned within the housing (2i).
[0012]
12. Assembly of crankcase ventilation filter (1), according to claim 11, CHARACTERIZED by the fact that: (a) the housing (2) includes: a housing base (16); and a removable service cover (17); (i) the housing base (16) including the liquid drain arrangement (5); (ii) the service cover including the gas flow inlet arrangement (3) therein, the gas flow inlet arrangement (3) comprises a gas flow inlet pipe (3x) including a pipe section internal projecting towards the housing base (16) and inside an open filter (22) by means of an extension through a central flow opening in the first extreme part (23).
[0013]
13. Assembly of crankcase ventilation filter (1), according to claim 12, CHARACTERIZED by the fact that: (a) the inner tube section includes: an inertial impact plate (31p) extending through it; and a gas flow outlet arrangement through the inner tube section.
[0014]
14. Assembly of crankcase ventilation filter (1), according to any of claims 11 to 13, CHARACTERIZED by the fact that: (a) the service cover includes: (i) an upper portion with an inlet pipe projecting itself through it; and (ii) a rotating perimeter mounting ring in relation to the upper portion.

类似技术:

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BR112013034074B1|2021-02-23|filter cartridge and crankcase ventilation filter assembly

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同族专利:

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公开号 | 公开日

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CN103687658B|2016-05-04|

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EP2726171A2|2014-05-07|

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US10434454B2|2019-10-08|

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US20170157549A1|2017-06-08|

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KR101972618B1|2019-08-16|

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WO2013003769A2|2013-01-03|

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JP6075654B2|2017-02-08|

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US20140208702A1|2014-07-31|

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WO2013003769A3|2013-02-28|

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CN103687658A|2014-03-26|

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BR112013034074A2|2017-02-07|

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EP2726171B1|2017-05-17|

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KR20140058524A|2014-05-14|

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US9504949B2|2016-11-29|

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JP2014523808A|2014-09-18|

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BR112013034074A8|2020-05-19|

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法律状态:
2018-04-03| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

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2019-07-30| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|

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2020-06-16| B07A| Technical examination (opinion): publication of technical examination (opinion)|

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2021-02-02| B09A| Decision: intention to grant|

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2021-02-23| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 29/06/2012, OBSERVADAS AS CONDICOES LEGAIS. |

优先权:

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申请号 | 申请日 | 专利标题

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US201161503008P| true| 2011-06-30|2011-06-30|

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US61/503,008|2011-06-30|

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US201261665501P| true| 2012-06-28|2012-06-28|

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US61/665,501|2012-06-28|

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PCT/US2012/045034|WO2013003769A2|2011-06-30|2012-06-29|Air/oil separator assemblies; components; and, methods|

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