AIR FILTER AND AIR FILTER ELEMENT ARRANGEMENT

专利摘要:
AIR FILTER AND AIR FILTER ELEMENT. The present invention relates to an air filter element, a filter housing, and an air filter in which the air filter elements have a high filtration capacity and a long service life by increasing the air filter surface. an air filter element taking into account the structural requirements of the air filter housing.
公开号:BR112014017028B1
申请号:R112014017028-2
申请日:2013-01-14
公开日:2020-11-24
发明作者:Werner Blossey；Mario Rieger；Robert Hasenfratz；Michael Harenbrock；Duc Cuong Nguyen；Pascal Neef；Andre Rosgen；Thomas Jessberger；Pedro Miguel Pereira Madeira；Michael Heim；Martin Schmid；Gelase Mbadinga-Mouanda；Andreas Weber；Christian Thalmann；Mike Schmid；Jorg Menssen
申请人:Mann+Hummel Gmbh；
IPC主号:

专利说明:

Field of the Invention
[001] The invention relates to the technical field of air preparation and filtration, for example, air filtration in a motor vehicle, a construction machine, or an agricultural machine. In particular, the invention relates to an air filter element and an air filter. Background of the Invention
[002] For example, air filters are used to supply air from internal combustion engines to remove pollutants and dirt particles from the air supplied for combustion so that only purified air is supplied for a combustion process in the combustion engine internal.
[003] An air filter has an inflow opening for unpurified dirty air and an outflow opening for clean filtered air; the filter element performs the actual filtration function. The air supply of the internal combustion engine is provided through the outlet of the air filter; the internal combustion engine absorbs the required air or amount of air. The filter element or air filter element is composed of a filter medium like a filter paper through which the air that will be filtered flows when the internal combustion engine sucks in the air so that the dust particles contained in the air that flows through are separated or removed in the filter medium.
[004] Generally, the filter medium is folded (folded filter) or has several filter chambers (pleated filter) to increase the filter surface area, which also extends the life of an air filter element since a larger filter surface area can absorb more dirt particles before the pressure drop of the filter medium caused by separate dust has become so significant that air is no longer allowed to pass through the internal combustion engine in the required amount and the air can no longer pass or flow through the filter medium.
[005] Generally, the filter element is contained in the housing and, for example, a functional component in the form of an additional filter element is provided in the housing, upstream of the outflow opening of the air filter. The additional filter element in this case performs the function of preventing dirty air from flowing into the internal combustion engine through the air filter, even if the air filter is removed from the housing. For this reason, a main element or air filter element and a functional component should generally be placed inside the air filter housing.
[006] In addition, the structural design of the housing can be adapted to external circumstances, for example, the spatial circumstances inside the engine compartment of a motor vehicle. The structural design of the housing has a direct influence on the size of the air filter element and therefore on the filtration performance of the air filter element.
[007] Depending on the volume within the air filter housing occupied by the functional component, the main element or air filter element is correspondingly reduced in size and / or the depth of the air filter folds or filter chambers of the main element is adapted to divide the space within the air filter housing.
[008] Generally, the folds of the filter element are folded or the depths of the filter chambers are incorporated so that they are equal in depth and thus constitute a block-shaped air filter element. However, this can result in the fact that the functional component does not occupy all the space that the block-shaped design of the main element leaves open inside the housing.
[009] WO 98/47601 described a filter element in the form of a folded filter element for an air filter; the filter element consists of a built-in filter insert in the form of a zigzag. Summary of the Invention
[0010] An objective of the invention can be visualized as achieving high filtration performance and a long service life of air filter elements by expanding the filter area of an air filter element while taking into account the structural requirements of the housing air filter.
[0011] Another embodiment of the invention describes an air filter element with an upstream surface, a downstream surface, and a filter means; the filter means extends between the upstream surface and the downstream surface; at least one or both the upstream and downstream surfaces have a lowered offset in at least some sections; a functional component, which will be placed in a functional relationship with the air filter element, can project at least partially into a free space produced by the lowered displacement; the functional component, which will be placed in a functional relationship with the air filter element, can have a functional relationship with the lowered displacement of the upstream or downstream surface.
[0012] For example, the filter medium may contain or be composed of paper, non-woven, microfiber material, nanofiber material, or plastic, or it may be composed of a mixture or composite of these materials.
[0013] The lowered displacement is a displacement of a flow surface (upstream surface or downstream surface) in the direction facing the opposite flow surface, where the lowered displacement is still part of the flow surface. A lowered displacement can be formed in particular by a curve, a step, a protuberance, or a recess; in particular, the lowered displacement can be composed of the free volume or the concave indentation of a flow surface.
[0014] A functional component has a functional relationship with the air filter element, for example, if the two components are combined for a filtration procedure or the filtration procedure occurs only through the cooperation of these components. The functional component and the air filter element are also in a functional relationship if, in addition to pure filtration, the functional component performs another function such as chemical filtration or air flow guidance. In this particular case, the structural design of the functional component and the air filter element can be combined so that the respective surfaces of these components correlate, this allows the maximum use of the space that is available for the filter element to be made. air and the functional component.
[0015] According to another embodiment of the invention, at least one or both the upstream and downstream surfaces have a lowered displacement with a one-dimensional concave or convex shape.
[0016] In particular, the air filter element can be formed simply between a single continuous intermediate blanket, since the one-dimensional concave or convex shape - as opposed to a two-dimensional one - can simply be produced by means of edge spacing variable bend in the fold of the filter medium.
[0017] According to another embodiment of the invention, the filter medium is a filter medium that is folded between the folds; the folds have a first fold sheet and a second fold sheet, which are joined at a fold edge by means of their respective fold sheet edges; the first fold sheets of adjacent folds are essentially parallel; the first and second fold sheets extend between the upstream surface and the downstream surface; and the lowered displacement extends along a direction in which the fold edges extend.
[0018] As a result, as described above and below, the air filter element makes it possible to provide a large filter area and adapt to the structural circumstances of the environment of use since the lowered displacement makes it possible to configure the external geometric shape of the element air filter.
[0019] According to another embodiment of the invention, the depth of bending varies in a direction transversal to the direction of the bending edges. In particular, the fold depth varies between adjacent folds.
[0020] In this case, the fold depth of a filter fold is constant in a direction that extends along the fold edge.
[0021] According to another embodiment of the invention, the filter element has a support structure. In particular, the support structure also serves to seal the folds laterally. Preferably, the support structure has a lowered displacement, particularly in the form of an indentation, which corresponds at least partially to a shape of the lowered displacement of the upstream or downstream surface. As a result, at least along the lowered displacement, the support structure has a lowered displacement that corresponds to the lowered displacement or has a corresponding indentation so that the support structure presents as little obstruction as possible in an air flow inside and / or out of the lowered displacement.
[0022] According to another embodiment of the invention, the folding sheets are laterally incorporated into the support structure at the edges of the folding sheet which do not join the folding edges of the respectively adjacent filter sheets. In this way, it is possible to increase the mechanical resistance of the air filter element.
[0023] According to another embodiment of the invention, the folds that extend through the lowered displacement are produced from a continuous intermediate mat. Unlike an air filter element composed of a plurality of intermediate webs, there is no glue seam or joint seam and instead, the filter medium is produced from continuous material.
[0024] In accordance with another embodiment of the invention, the adjacent fold sheets are reciprocally stabilized by means of at least one spacer device. The spacer device can be made in particular of a plastic. For example, the melted plastic to produce the spacer device is applied to the filter medium. Preferably, the spacer device has glue granules or glue lines. The spacer device, in particular the glue lines, is / are located on the downstream and / or upstream side of the filter medium.
[0025] The spacer device or glue lines can be arranged perpendicular or diagonal to the upstream or downstream surface. In addition, the glue lines or glue granules can have a continuous glue granule or a broken glue granule or dotted glue granule and can be composed of a plurality of glue granule segments. In that case, the glue line segments or glue granule segments can be offset from each other so that the broken granule confines an angle between 1 ° and 90 ° with the fold edges and / or the upstream or downstream surface .
[0026] The spacer device in this case can, for example, ensure that the fold sheets maintain a certain distance from each other and in particular, the spacer device can cause the opening angle of the filter folds to remain the same. This can facilitate uniformly high filtration performance of the air filter element as the folding openings may change only slightly due to the presence of the glue lines.
[0027] In particular, the spacer device, particularly in the form of glue lines, prevents a reduction in the size of the filter opening. The fold sheets of a filter fold can only move towards each other in a reduced amount due to the presence of the spacer device inserted between them.
[0028] According to another embodiment of the invention, the spacer device, particularly in the form of glue granules or glue lines, extends parallel to the edges of the fold sheet that do not join the edges of the fold sheet of the filter sheets. respectively adjacent.
[0029] As a result, in at least some sections, the spacer device extends in a direction from the upstream surface to the downstream surface and vice versa and parallel to the support structure. As a result, it presents the air flow with the least possible flow resistance.
[0030] Another embodiment of the invention describes an air filter element device with an air filter element, as described above and below, and a functional component; the functional component projects at least partially into the free space produced by the lowered displacement and there is a functional relationship between the functional component and the lowered displacement of the upstream or downstream surface.
[0031] As a result, a functional component can interact with an air filter element, for example, as the two components are located inside an air filter housing, and due to the fact that the free space is configured according to the dimensions of the functional component, this causes the least possible loss in the filter area of the air filter element, thus increasing the filter area despite the accommodation of a functional component in the air filter housing.
[0032] According to another embodiment of the invention, the functional component has an interface surface; in at least some sections, the interface surface has a shape that corresponds to that of the lowered displacement of the upstream or downstream surface. In particular, this makes it possible for the functional component to be structurally and geometrically adapted to the air filter element. In this case, the area or surface of the functional component facing the air filter element is referred to as the interface surface.
[0033] According to another embodiment of the invention, the support structure covers the filter medium laterally to the lowered displacement. As a result, the support structure seals the filter medium on the surface of the air filter element which is oriented perpendicular to the fold edges.
[0034] According to another embodiment of the invention, the support structure has a first retaining surface and a second retaining surface; the recessed displacement is incorporated in the support structure between the first retaining surface and the second retaining surface of the support structure.
[0035] As a result, upon insertion into an air filter housing, the first retaining surface and the second retaining surface have a depth of penetration greater than the lowered displacement on the support structure and the filter medium or The air filter is then retained by the first and second retaining surfaces.
[0036] The first retaining surface and the second retaining surface can also be shaped almost in the form of a point or incorporated in the form of a point, that is, they have very small geometric dimensions less than 1 cm2.
[0037] According to another embodiment of the invention, the surface upstream or downstream of the filter medium associated with the lowered displacement on the support structure extends into a region lateral to the lowered displacement on the support structure. For example, the region lateral to the recessed displacement on the support structure is the region between the first retaining surface or the second retaining surface and the maximum depth of the recessed displacement on the support structure, in the form of an indentation. . Due to the upstream or downstream surface extending into the region lateral to the recessed displacement on the support structure or lateral to the indentation, the surface of the filter medium can be maximized despite the presence of the recessed displacement or indentation.
[0038] According to another embodiment of the invention, the support structure has a (third) retaining surface, which is located, for example, between the first retaining surface and the second retaining surface in the lowered displacement on the retaining structure. Support. As a result, particularly in addition to the first and second retaining surfaces, an additional (third) retaining surface is located, for example, in the indentation over a retaining surface recess in an air filter housing and can provide positioning and Improved attachment of the air filter element to the air filter housing.
[0039] According to another embodiment of the invention, at least one of the first, second and third retaining surfaces absorbs a holding force in the direction along the plane of the support structure. As a result, the retaining surface or surfaces provide (m) positioning or securing of the air filter element in an air filter housing. The retaining surfaces absorb a holding force along or parallel to the plane of the support structure, particularly in a direction in which air flows through the air filter from the upstream surface to the downstream surface.
[0040] According to another embodiment of the invention, in at least some sections, the upstream or downstream surface associated with the lowered displacement on the support structure has a one-dimensional concave or convex shape; in at least some sections, the curvature of the concave or convex shape corresponds to that of at least part of the lowered displacement.
[0041] The above explanations of the one-dimensional concave or convex shape that can increase the filter area apply in a similar way to the one-dimensional concave or convex shape of the lowered displacement and to the downstream or upstream surface.
[0042] The fact that the respective first fold sheet edges of adjacent folds are oriented essentially parallel to each other means that the folds are oriented essentially in the same direction, this in turn means that the direction of air flow through the folds extends essentially in the same direction.
[0043] According to another embodiment of the invention, the upstream or downstream surface associated with the lowered displacement has a shape that corresponds to at least part of the lowered displacement of the support structure, since it is provided with a plurality of folds of varying bend depths.
[0044] At least some among the plurality of folds with varying fold depths are advantageously produced from a continuous filter media blanket. It is therefore unnecessary to combine several partial filters to produce an air filter element and, due to the variable fold depth of the folds compared to each other, it is possible, for example, to produce a curved upstream or downstream surface. .
[0045] Another embodiment of the invention describes an air filter with an air filter housing, an air filter element, and a functional component; the air filter element has an upstream surface, a downstream surface, and a filter means; the filter means extends between the upstream surface and the downstream surface; at least one or both the upstream and downstream surfaces have a lowered displacement; the functional component projects at least partially into the free space produced by the lowered displacement; and the functional component has a functional relationship with the lowered displacement on the upstream surface and the downstream surface of the air filter element.
[0046] The lowered displacement allows for a structural adaptation or an adaptation to the geometric shape of the air filter housing, the air filter element, and the functional component.
[0047] According to another embodiment of the invention, the lowered displacement on the downstream surface or upstream surface has a one-dimensional concave or convex shape. In contrast, the functional component can be convex or concave in shape so that the geometric shapes of the air filter element and the functional component are combined, making maximum use of the space available in an air filter housing.
[0048] According to another embodiment of the invention, the functional component has an interface surface; in at least some sections, the interface surface has a shape that corresponds to that of the lowered displacement of the upstream or downstream surface. Similarly, for the shape of the interface surface, its adaptation to the lowered displacement can allow maximum use of the space available in the air filter housing.
[0049] According to another embodiment of the invention, the functional component is incorporated as an additional filter element that projects at least partially into the free volume produced by the lowered displacement; the additional filter element has an upstream and a downstream surface; one or both the upstream surface and the downstream surface of the additional filter element correspond to each other of the upstream surface and the downstream surface of the air filter element. In particular, the additional filter element can be incorporated as a pre-filter or post-filter and can then be found in a functional relationship with each upstream or downstream surface; the corresponding flow surface or both flow surfaces also have a low displacement over the air filter element. The prefilter can, for example, be incorporated to perform a pre-filtration of the air. The post-filter can be incorporated to ensure the filtration function of the air filter even if, during a replacement of the air filter element, air continues to flow through the air filter or also in the event of a failure, for example , if the filter mat of the air filter element is damaged. The lowered displacement in the air filter element allows it to be placed in the filter housing in a compact manner together with the pre-filter and / or post-filter.
[0050] According to another embodiment of the invention, the functional component is incorporated as a deflecting device that is projected at least partially into the free volume produced by the lowered displacement; the baffle device has at least one baffle surface whose baffle surface edge is oriented towards the respective upstream or downstream surface of the air filter element. The deflecting device can increase an inflow and / or an outflow of air into and / or outside the air filter.
[0051] According to another embodiment of the invention, the functional component is incorporated as a flow rectifier; the flow rectifier is associated with an air mass sensor that will be placed in a functional relationship with the air filter element; and the flow rectifier projects at least partially into the free volume produced by the lowered displacement.
[0052] According to another embodiment of the invention, the functional component is incorporated as a housing support rib; the housing support rib has a retaining surface for retaining the air filter element; the housing support rib projects at least partially into the free space produced by the lowered displacement. The housing support rib in this case can be an indentation in the housing wall. The retaining surface may be incorporated to accommodate the support structure or a retaining surface recess in the support structure when the air filter element is inserted into the air filter housing so that the retaining surface establishes or predetermines the position of the air filter element in the air filter housing.
[0053] According to another embodiment of the invention, the functional component is incorporated as a partition wall; the partition wall protrudes partially into the housing; the dividing wall projects at least partially into the free space produced by the lowered displacement and has a sealing surface that divides the filter housing with the air filter element into two filter chambers on the upstream side, each with a separate inflow opening. In particular, an inflow opening is provided with a valve device.
[0054] As a result, the partition wall makes it possible to provide a plurality of inflow openings in such a way that, for example, if a filter becomes clogged or excessively dirty, air is absorbed through the second filter chamber.
[0055] According to another embodiment of the invention, the functional component is incorporated as a hydrocarbon adsorption filter element that protrudes at least partially into the free volume that is produced by the lowered displacement. As a result, a filter air can also be subjected to chemical filtration, with each filtration procedure taking place within the same air filter housing. First, however, a hydrocarbon adsorption filter element located on the downstream side serves to capture hydrocarbons that could diffuse through the air filter and into the ambient air when the internal combustion engine is not running. It is also possible for a plurality of hydrocarbon adsorption filter elements to be accommodated in a plurality of free volumes.
[0056] According to another embodiment of the invention, the functional component is incorporated as a resonator geometry that projects at least partially into the free volume that is produced by the lowered displacement. The resonator geometry makes it possible to muffle noise in the air flow that flows through the air filter; the muffling of the noise occurs directly in the place where the flow noise is generated, that is, inside the air filter housing.
[0057] The air filter element and the air filter, as described above and below, are in particular used for the filtration of air in motor vehicles, construction machinery, or agricultural machinery. In particular, these are used to filter the intake air from an internal combustion engine or to filter the intake air from a passenger compartment of the vehicle. These can also be, however, incorporated in a modified way so that they can also be used for other fluids, in particular for liquids and mixtures of liquids. In this respect, they may in particular be largely equal in structure, but incorporated as fuel or oil filter elements for motor vehicles or as fuel or oil filters for motor vehicles.
[0058] The individual characteristics can be naturally combined with each other, sometimes obtaining advantageous effects that go beyond the sum of their individual effects.
[0059] The exemplary embodiments of the invention will be described below with reference to the drawings. Brief Description of Drawings
[0060] Figure 1 is an isometric description of an air filter element according to an exemplary embodiment of the invention.
[0061] Figure 2 shows a side view of an air filter element according to an exemplary embodiment of the invention.
[0062] Figure 3 shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[0063] Figure 4 shows a sectional view of an air filter element and the functional component according to an exemplary embodiment of the invention.
[0064] Figure 5A shows a cross-section through an air filter element according to an exemplary embodiment of the invention.
[0065] Figure 5B shows a cross-section through an air filter element according to an exemplary embodiment of the invention.
[0066] Figure 5C shows a cross section through an air filter element according to an exemplary embodiment of the invention.
[0067] Figure 5D shows a cross-section through an air filter element according to an exemplary embodiment of the invention.
[0068] Figure 5E shows a cross section through an air filter element according to an exemplary embodiment of the invention.
[0069] Figure 5F shows a cross section through an air filter element according to an exemplary embodiment of the invention.
[0070] Figure 5G shows a cross section through an air filter element according to an exemplary embodiment of the invention.
[0071] Figure 6 shows a cross-section through a pleated filter according to an exemplary embodiment of the invention.
[0072] Figure 7 shows an air filter element and a functional component according to an exemplary embodiment of the invention.
[0073] Figure 8 shows an exploded isometric view of an air filter with an air filter element, a housing, and a functional component according to an exemplary embodiment of the invention.
[0074] Figure 8A is an isometric description of an air filter with an air filter element, a housing, and a functional component according to an exemplary embodiment of the invention.
[0075] Figure 9 shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[0076] Figure 9A shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[0077] Figure 9B shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[0078] Figure 10 is an isometric view of an air filter according to an exemplary embodiment of the invention.
[0079] Figure 10A is an isometric view of an air filter according to an exemplary embodiment of the invention.
[0080] Figure 11A is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[0081] Figure 11B is an isometric view of a functional component of an air filter according to an exemplary embodiment of the invention.
[0082] Figure 11C is an isometric view of an air filter housing according to an exemplary embodiment of the invention.
[0083] Figure 12A is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[0084] Figure 12B is an isometric view of a functional component of an air filter according to an exemplary embodiment of the invention.
[0085] Figure 13A is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[0086] Figure 13B is an isometric view of a functional component of an air filter according to an exemplary embodiment of the invention.
[0087] Figure 13C is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[0088] Figure 13D is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[0089] Figure 14 shows a sectional view of an air filter with a main element, a functional component, and a housing according to an exemplary embodiment of the invention.
[0090] Figure 15 is an isometric view of an air filter according to an exemplary embodiment of the invention.
[0091] Figure 16 shows a sectional view of an isometric description of an air filter according to an exemplary embodiment of the invention.
[0092] Figure 17 shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[0093] Figure 18 is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[0094] Figure 19 shows a sectional view of an isometric description of an air filter according to an exemplary embodiment of the invention.
[0095] Figure 20 shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[0096] Figure 21 shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[0097] Figure 22 shows a side view of an air filter according to an exemplary embodiment of the invention.
[0098] Figure 23 is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[0099] Figure 24 is an isometric view of an air filter according to an exemplary embodiment of the invention.
[00100] Figure 25 shows a sectional view of an isometric description of an air filter according to an exemplary embodiment of the invention.
[00101] Figure 26 is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[00102] Figure 27 shows a front view of an air filter according to an exemplary embodiment of the invention.
[00103] Figure 28 shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[00104] Figure 29 shows a sectional view of an isometric description of an air filter according to an exemplary embodiment of the invention.
[00105] Figure 30 is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[00106] Figure 31 shows a sectional view of an air filter according to an exemplary embodiment of the invention.
[00107] Figure 32 shows a sectional view of an isometric description of an air filter according to an exemplary embodiment of the invention.
[00108] Figure 33 shows a sectional view of an isometric description of an air filter element according to an exemplary embodiment of the invention.
[00109] Figure 34 shows a side view of an air filter according to an exemplary embodiment of the invention.
[00110] Figure 35 shows a sectional view of an isometric description of an air filter according to an exemplary embodiment of the invention.
[00111] Figure 36 shows a side view of an air filter according to an exemplary embodiment of the invention.
[00112] Figure 37 shows a sectional view of an isometric description of an air filter according to an exemplary embodiment of the invention.
[00113] Figure 38 is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[00114] Figure 39 shows a side view of an air filter according to an exemplary embodiment of the invention.
[00115] Figure 40 shows a sectional view of an isometric description of an air filter according to an exemplary embodiment of the invention.
[00116] Figure 41 is an isometric view of an air filter element according to an exemplary embodiment of the invention.
[00117] Figure 42 is an isometric view of an air filter with a housing cover, an air filter element, and a housing body according to an exemplary embodiment of the invention.
[00118] Figure 43 shows an isometric description of an additional filter element of an air filter according to an exemplary embodiment of the invention.
[00119] The descriptions in the figures are schematic and are not represented to scale. Detailed Description of Exemplary Modalities
[00120] Whenever the same numerical references are used below, they refer to elements that are the same or similar.
[00121] Figure 1 shows an air filter element 200 or main element 200 of an air filter. The air filter element 200 has a plurality of filter folds 220; each filter fold 220 is composed of a first fold sheet 230 and a second fold sheet 240. The filter fold 220 or the first fold sheets 230 and the second fold sheets 240 here extend in one direction from the inflow direction 270 to outflow direction 280 or vice versa. The fold edge 225 of each filter fold 220 extends perpendicular to the inflow direction 270 and the outflow direction 280. The fold edge 225 here forms the transition from a first fold sheet to a second fold sheet and is formed both on the upstream surface 275 and on the downstream surface 285 of the air filter element 200.
[00122] The fold edge 225 on the upstream side or upstream surface 275 is formed by an upstream fold sheet edge 231 of the first fold sheet 230 and an upstream fold sheet edge 241 of the second fold sheet 240. Similarly, a fold edge 225 on the downstream surface 285 is formed by a downward fold sheet edge 232 of the first fold sheet 230 and a downstream fold sheet edge 242 of the second fold sheet 240 .
[00123] A fold sheet edge 260, i.e., upstream fold sheet edge 231 or downstream fold sheet edge 232 of the first fold sheet 230 or upstream fold sheet edge 241 or the fold sheet edge 242 of the second fold sheet 240 is formed by the fact that a fold sheet meets the filter fold by means of the fold edge of the fold sheet, i.e., the fold edges two fold sheets form the filter fold 220.
[00124] A side fold sheet edge 233 of the first fold sheet 230 and a side fold sheet edge 243 of the second fold sheet 240 extend from the upstream surface 275 to the downstream surface 285.
[00125] The filtering action of the air filter element 220 is performed by the fact that a filter medium is used to form the filter folds 220 and unpurified air - called dirty air - flows in the direction of inflow 270 against the surface upstream 275 and passes through the filter medium in the direction towards the downstream surface 285 in the outflow direction 280 and then it is cleaned so that clean air is present on the downstream surface 285.
[00126] The fold edges 225 of all filter folds 220 on the upstream surface 275 and the downstream surface 285, respectively, form a so-called envelope 265; the envelope 265 can in particular be a surface that surrounds the fold edges on the upstream or downstream surface.
[00127] The fold edges 225 cross the surface upstream and the surface downstream in the same way; the envelope corresponds to one of these two surfaces that spatially confines or surrounds a functional component.
[00128] In this case, this is a connection line of the fold edges 225 on the downstream surface 285 or on the upstream surface 275; the connecting line extends perpendicular to the bending edges and in particular, the connecting line, together with the downstream surface or upstream surface, forms a one-dimensional surface or concave shape.
[00129] In this case, a one-dimensional concave surface has only one curvature in one direction. For example, this curvature of the one-dimensional concave surface in one direction is produced by the fact that the depth of folds of adjacent filter folds constantly decreases or increases in such a way that the fold edges 225 have a variable distance from the respective opposite surface, i.e. that is, the upstream surface 275 or downstream surface 285. The envelope 265 and the fold edges 225 form a one-dimensionally curved concave surface since the one-dimensional concave surface is curved in the direction of the envelope 265, but has no curvature in the direction of the shape of the fold edges 225.
[00130] The glue lines 235 extend in the folds in a direction from the upstream surface to the downstream surface and provide increased stability of the filter medium.
[00131] Figure 2 shows a side view of an air filter element 200 with a plurality of filter folds 220. The envelope 265 on the downstream surface 285 is incorporated by the fact that the fold edge 225 of each filter fold 220 is separated at a different distance from the upstream surface 275. The so-called fold depth 250 here extends in the direction of envelope 265, decreasing or increasing constantly, depending on the direction from which it is observed. The adjacent filter bends can, however, naturally have the same bend depth 250.
[00132] In other exemplary embodiments, however, envelope 265 can also be incorporated so that the fold depth of adjacent filter folds first decreases and then increases again. Generally, the envelope 265 can take any shape and thus can be incorporated so that an upstream surface 275 or downstream surface 285 of the air filter element 200 matches or adapts to the external circumstances dictated by the design of an air filter. air or air filter housing.
[00133] As shown in Figure 2, the dirty air flows in the inflow direction 270 against the upstream surface 275, then penetrates the filter folds 220, is distributed along the air flow direction 610 so that the air in the inflow side passes through the first fold sheet 230 and the second fold sheet 240 of each filter fold 220 and is then filtered so that the filtered air leaves the air filter element 200 on the downstream surface 285 in the direction of efflux 280; the air on the downstream side of the air filter element 200 is referred to as clean air.
[00134] Figure 3 shows a sectional view of an air filter 100; the air filter 100 has a housing body 110 and a housing cover 120, which together constitute the housing of the air filter.
[00135] Inside the housing there is an air filter element 200 and a functional component 300, both arranged to filter the air flowing through it. The air filter element 200 is located in the housing body 110, is retained by two recesses in the retaining surface 190, and fixes the position of the air filter element 200 within the housing body 110. The air filter element 200 also has a seal 205, which at least provides a sealed closure of the housing body 110 with the air filter element. In addition, the seal 205 can provide a seal between the housing body 110 and the housing cover 120 and / or between the air filter element 200 and the housing cover 120. The seal 205 can be positioned or attached to the housing element. air filter 200 and in the housing body 110 or housing cover 120.
[00136] It is essential for the function of the seal 205 that unfiltered air is allowed to travel through the air filter element 200 and reach the clean air connection 140. The seal should also seal the air filter housing 100 , at least to a large extent. This means that the air passes through the dirty air connection 130 or the first inflow opening 130 inside the air filter housing 100, passes through the air filter element 200 and the functional component 300 contained therein, and leaves the housing of the air filter as filtered clean air at the clean air connection 140 or outflow opening 140 of the air filter 100.
[00137] The seal 205 in this case is located between the housing body 110, the housing cover 120, and the air filter element 200 to prevent unfiltered air from entering the air filter housing, this could allow it leaves the housing at the clean air connection 140 without flowing through the filter means of the air filter element 200 and being cleaned.
[00138] The housing body 110 has an air filter element receptacle 150 where a so-called filter collar 207 can engage. The filter collar 207 is incorporated to mechanically fix the air filter element 200 to the housing body.
[00139] The air flow of the air, which will be cleaned and filtered in the air filter 100 shown in Figure 3, travels via or through the dirty air connection 130, the air filter element 200, the functional component 300, and the clean air connection 140. In the process, the air is essentially cleaned by the air filter element 200, leaves the latter on the downstream surface 285, and then leaves the air filter housing 100 through the functional component 300.
[00140] The functional component 300 here can be an additional filter element or another functional component that is accommodated within the air filter housing 100.
[00141] Figure 4 shows a sectional view of a main element 200 or air filter element 200 and a functional component 300 in the form of an additional filter element 310 folded into a star shape, viewed along the line section A - A of Figure 3. In particular, Figure 4 shows that functional component 300 is adapted to fit in or against envelope 265 of air filter element 200.
[00142] In this case, the main element 200 and the functional component in the form of an additional filter element 310 have filter folds 200 with varying fold depths; the fold depths of the respective filter folds are matched so that the envelope 265 of the downstream surface 285 of the air filter element 200 corresponds to the envelope 265 of the upstream surface 301 of the functional component 300 or the upstream surface 311 of the element additional filter 310.
[00143] The air flow through main element 200 and functional component 300 is routed so that the air that will be cleaned on the upstream surface 275 of main element 200 penetrates that upstream surface, then exit main element 200 on the downstream surface 285, and then on the upstream surface 311 of the additional filter element 310, penetrate the additional filter element and exit the latter on the downstream surface 312.
[00144] Figure 5A shows a cross section through an air filter element 200; the downstream surface 285 has a semicircular free volume; the semicircular free volume excludes only part of the downstream surface 285 and that semicircular free volume is formed by envelope 265.
[00145] Figure 5B shows the cross section of an air filter element 200; the downstream surface 285 has a sawtooth-shaped cross-section. The sawtooth cross-section here extends over the entire width of the air filter element 200. The envelope 265 connects the fold edges 225 of the filter folds of the filter medium 210.
[00146] It should be noted in particular that the number of filter folds is not predetermined or influenced by the shape and cross-sectional dimensions of the downstream surface 285, that is, the shape of the envelope 265.
[00147] As shown in Figure 5B, in all the exemplary embodiments described above and below, the air filter element 200 can have several filter folds; the filter folds and the number of filter folds are not predefined or determined by the shape or cross section of the envelope 265.
[00148] Figure 5C shows an elliptical, semicircular shape of the envelope 265 of the downstream surface 285 of the air filter element 200. In this case, the elliptical, semicircular shape of the envelope 265 extends over the entire width of the air filter element. air 200 and over the entire width of the downstream surface 285.
[00149] Figure 5D shows an air filter element 200 whose downstream surface 285 extends such that a filter fold depth decreases or constantly increases in one direction of envelope 265. In this case, envelope 265 from the edges folding downstream surface can extend in the form of a hyperbola, thus producing a concave shape of the downstream surface 285. The envelope can also, however, extend in a line, that is, the envelope has no curvature and, therefore, it is an envelope line.
[00150] Figure 5E shows an air filter element 200 whose surface downstream 285 is staggered; the steps of the downstream surface 285 are connected via a semicircular shape of the envelope 265.
[00151] Figure 5F shows an air filter element 200 whose downstream surface 285 extends in a trapezoidal manner such that the filter fold depth of the intermediate filter folds 220 is greater than the fold depth of the filter folds. filter at the edge of the cross-sectional description. Here, in regions of increasing fold depth starting from the edges facing the middle of the air filter element 200, the envelope 265 of the downstream surface can extend in a linear or curved manner.
[00152] Figure 5G shows an air filter element 200 whose upstream surface 275 has a stepped edge and whose downstream surface 285 has a region with a bending depth that decreases linearly and a region with a bending depth constant. As a result, the envelope has a trapezoidal shape; the trapezoidal shape of the envelope can be symmetrical or asymmetrical.
[00153] As shown in Figures 5F and 5G, the upstream surface 275 and the downstream surface 285 can have any shape or any envelope of the fold edges.
[00154] The shapes of the upstream surface 275 and the downstream surface 285 as shown in Figures 5A to 5G can also be used in pleated filters.
[00155] The cross sections of the air filter element 200 shown in Figures 5A to 5G and the shapes of the envelope 265 are non-exhaustive enumerations illustrating possible shapes of the envelope 265. Instead, a continuously variable fold depth of the folds of The filter can produce any shape of the envelope 265 from the fold edges on the upstream surface 275 or downstream surface 285, but it is also possible both on the downstream surface 285 and on the upstream surface 275 to produce any desired shape of the envelope 265 on the corresponding surface.
[00156] Figures 5A to 5G show the free volume or free volumes 500 as shaded areas; the free volumes of each are incorporated so that they describe the spatial difference in relation to a block-shaped air filter element, starting from one of the air filter elements as described above and below.
[00157] Figure 6 shows a side view of a pleated filter element 600; the downstream surface 285 extends along the envelope 265 so that the filter chambers 605 have a different filter chamber depth.
[00158] The pleated filter element 600 is characterized by the fact that the filter chambers 605 are opened and closed alternately on the upstream surface 275 and the downstream surface 285. As a result, the air flow direction 610 is extends through the pleated filter element 600 so that the incoming air over the upstream surface 275 penetrates into the filter chambers 605 which are opened facing the upstream surface 275, then penetrates through the filter medium 210 into the filter chambers adjacent 605, which are closed on the upstream surface and open on the downstream surface 285, where air leaves the pleated filter element 600.
[00159] The upstream surface 275 in a pleated filter element is composed of the openings upstream of the filter chambers and similarly, the downstream surface 285 is composed of the openings downstream of the filter chambers.
[00160] In the description shown in Figure 6, the filter chambers 605 of the pleated filter element 600 are distinguished in particular by the fact that they have different filter chamber depths in a direction from the upstream surface 275 to the surface to be downstream 285.
[00161] Figure 7 shows an air filter element 200, which is functionally related to functional component 300 so that the air filter element 200 on the downstream surface 285 is shaped so that at least part of the air element air filter 200 press and fix the filter collar 207 of the functional component 300 along a pressure direction 305.
[00162] This makes it possible, for example, to keep the functional component in its position inside the air filter housing or to position it in the first place.
[00163] The envelope of the downstream surface 285 of the air filter element 200 and the envelope of the upstream surface 301 of the functional component 300 are formed so that they have a corresponding or similar shape. In particular, this ensures that the volume or space of the air filter housing is used efficiently and the main element 200, the functional component 300, and the additional filter element 310 have the largest possible filter area, that is, the largest possible surface area of the filter medium.
[00164] Figure 8 shows an isometric view of an air filter element 200, a functional component 300, and a housing body 110 of an air filter.
[00165] The air filter element 200 has a circumferential filter collar 207, which engages in the air filter element receptacle 150 of the housing body 110 when the air filter element is inserted into the housing body . The air filter element receptacle 150 also engages indentation 294 of the support element. In the filter collar 207 and the air filter element, a seal 205 is also mounted along the filter collar so that the seal 205 seals the housing body 110 against the housing body 110 by inserting the filter element of air 200.
[00166] The air filter element 200 has a filter means 210 and that filter means is folded so that a free volume 500 is formed on the surface downstream of the air filter element in the direction of the functional component 300; envelope 265 surrounds free volume 500.
[00167] A support element 290 or support structure 290 with indentation 294 extends perpendicular to the fold edges 225 of the filter medium 210 to seal the filter folds in a sealed manner in their side openings so that no air is allowed to escape. filtrate can flow before and pass the filter folds of the filter. Another purpose of the support element 290 or support structure 290 is to stabilize the air filter element 200 and the filter medium 210. The support element 290 also makes it possible to position and secure the air filter element 200 during its insertion in the housing body 110 and after insertion into housing body 110.
[00168] The retaining surface recess 190 of the housing protrusion 194 positions the air filter element 200; the retaining surface recess 190 is adapted to the shape of the envelope 265 of the air filter element 200 or the indentation 294. By inserting the air filter element 200 into the housing body 110, the retaining surface recess 190 engages in the indentation 294 of the support element 290 and positions and secures the air filter element in the housing body.
[00169] The retaining surface recess 190 may, for example, be located in the housing protrusion 194; the housing protrusion may be a recess in the housing body wall from the outside in so that the recess engages the free volume 500 or indentation 294.
[00170] The support element 290 also has a first retaining surface 291, a second retaining surface 292, and a third retaining surface 296; the first retaining surface 291 is incorporated to be received by a retaining surface recess 191 in the housing body 110; the second retaining surface 292 is incorporated to be received by a retaining surface recess 192; and the third retaining surface 296 is incorporated to be received by a retaining surface recess 196 in the housing body.
[00171] As a result, when the air filter element is inserted into the housing body, the air filter element 200 rests through the retaining surfaces 291, 292 on or against the retaining surface recesses 191, 192 in the body accommodation 110.
[00172] Functional component 300 is incorporated in the form of a circular cylinder and projects from the efflux opening 140 into the housing body 110. In this case, an axial direction of the functional component 300 extends parallel to the direction of efflux in the downstream surface 285 of the air filter element 200 and parallel to an axial direction of the outflow opening 140. Furthermore, the outflow direction in the downstream surface 285 of the air filter element 200 is parallel - or at least less at an acute angle - to an axial direction of the outflow opening 140. That is, the axial direction of the functional component extends towards the filter edges of the downstream surface of the main element 200. In other words, the outflow opening 140 is therefore located on the housing body 110 which faces the downstream surface 285 of the air filter element 200. As a result, a main air flow direction between the air filter element 200 and the outflow opening 140 is unchanged and remains the same when air flows through the downstream surface and through the outflow opening.
[00173] The air filter element has a free volume of 500 to provide space for the functional component inside the housing body when the air filter element 200 is inserted.
[00174] Figure 8A shows an air filter element 200, a functional component 300, and a housing body 110. The functional component is a cylinder with a circular base whose axial direction extends parallel to the shape of the filter edges of the downstream surface 285.
[00175] The outflow opening 140 in this case is located in a wall of the housing body 110 so that starting from the downstream surface 285, the air flow must be diverted to pass through the outflow opening 140.
[00176] Figure 9 shows a sectional view of a housing body 110 with an air filter element 200 and a functional component 300 of the type shown in Figure 8; the functional component and the air filter element are inserted into the housing body.
[00177] The functional component 300 is placed against the outflow opening 140 in a sealed manner. As a result, the air leaving the air filter element 200 on the downstream surface 285, must flow through the functional component to be able to leave the housing body through the outflow opening 140.
[00178] The air filter element 200 connected to the housing body 110 in a sealed manner by means of the seal 205 and the filter folds 220 have a respective fold depth such that the filter folds confine the functional component 300.
[00179] In particular it should be noted that the fold edges or each fold edge do not have / have a curved shape, that is, the fold edges extend perpendicularly inside or outside the drawing plane.
[00180] Figure 9A shows a sectional view of a housing body 110 with an air filter element 200 and a functional component 300 as shown in Figure 8A; the functional component and the air filter element are inserted into the housing body.
[00181] In this case, the functional component extends in the free volume 500 of the air filter element, parallel to the filter edge shape on the downstream surface 285, that is, in a direction that extends out of the plane of the drawing or in a direction that extends into the drawing plane.
[00182] Figure 9B shows a sectional view along the cut line A - A of Figure 9A.
[00183] As clearly evident, the functional component extends in the free volume 500. In this case, the functional component can have any length within the free volume 500; the maximum possible use of the three-dimensional dimensional volume of the free volume 500 by the functional component is accompanied by an increased surface area of the functional component, for example, a filter area of an additional filter element, which makes it possible to improve the total functional performance of the functional component or additional filter element.
[00184] Figure 10 shows an isometric view of a housing body with an inserted air filter element 200. The air filter element 200 has two support elements 290, which are located laterally on the air filter element 200 and perpendicular to the fold edges 225 of the upstream surface 275. Naturally, the fold edges of the downstream surface also extend perpendicular to the support member 290.
[00185] Analogous to Figure 10, Figure 10A is an isometric view of the housing body with the inserted air filter element 200 of Figures 8A, 9A, and 9B. It is evident that the efflux opening 140 is located in a wall of the housing body 110 that extends perpendicular to the shape of the filter folds on the upstream surface 275 and correspondingly extends over the downstream surface 285. The volume that is available in the housing body 110 due to the free volume 500 in the air filter element 200 is used so that the functional component 300 and the main element 200 are located within the housing body and in the main element, a maximum filter area of the filter medium is obtained.
[00186] Figure 11A shows an isometric view of an air filter element 200; the support element 290 on the downstream surface 285 has a shape corresponding to that of the envelope 265.
[00187] Figure 11B shows a functional component 300, which corresponds to the shape of the envelope 265 of the air filter element 200 of Figure 11 A.
[00188] Figure 11C shows a housing body 110, which is incorporated to accommodate functional component 300 and air filter element 200 of Figures 11B and 11A.
[00189] In that case, the housing body 110 has a plurality of locking elements 115 for locking a housing cover on the housing body. The housing body 110 also has an outflow opening and a clean air connection 140.
[00190] The sawtooth shape of the surface of the functional component 300 of Figure 11D and the corresponding shape of the envelope 265 of the downstream surface 285 of the air filter element 200 of Figure 11A make it possible for the functional component 300 to have an area enlarged surface and therefore improved filter performance compared to a flat or smooth functional component and therefore more efficient use is made of the volume available within the housing body 110.
[00191] Figure 12A shows an air filter element 200 with a support structure 290.
[00192] On the downstream surface 285, the support structure 290 has a shape that extends along the envelope 265. Furthermore, the support structure 290 has a first retaining surface 291 and a second retaining surface 292; the indentation 294 is located or positioned between the first retaining surface 291 and the second retaining surface 292. Indentation 294 essentially corresponds to the shape of the envelope 265 of a free volume 500 of the air filter element. The first retaining surface and the second retaining surface are incorporated to secure the air filter element 200 through the support structure 290 to the air filter housing body and / or to position itself in relation to that housing body.
[00193] Due to the vibrations of the filter medium of the air filter element 200 during the filtration process, the filter medium must be prevented from coming into contact with the housing of the air filter since otherwise the filter medium could be damaged. The first retaining surface 291 and the second retaining surface 292 therefore serve to position the air filter element 200, without allowing the filter medium to come into contact with the housing body.
[00194] Figure 12B shows a functional component 300, which corresponds to the shape of the envelope 265 of the air filter element 200 of Figure 12A.
[00195] Figure 13A is an isometric view of an air filter element 200. The support element 290 in this case extends along a plane 293, which is transposed by vectors 293x and 293y.
[00196] As a result, the plane 293 of a support structure 290 extends so that the fold edges of the upstream surface 275 and the downstream surface 285 are oriented perpendicular to the plane 293 of the support element 290 of an element of air filter 200.
[00197] The envelope 265 of the downstream surface 285 corresponds to a shape of the indentations 294 in the support element 290. Also, the first retaining surface 291 and the second retaining surface 292, the indentations 294 serve to fix and position the element air filter inside the housing body.
[00198] Figure 13B shows a functional component 300, which corresponds to the shape of the envelope 265 of the downstream surface 285 of the air filter element 200 of Figure 13A.
[00199] Figure 13C shows an air filter element 200 in which the downstream surface 285 extends flat between the support elements 290. The filter edges of the air filter element extend as part of a plane on the downstream surface 285; this means that the fold depths of all the folds of the air filter element are the same.
[00200] The fold depths and positions of the fold edges on the downstream surface 285 and the downstream surface itself 285 are arranged in such a way that the downstream surface 285, together with all the fold edges associated with it, is lowered of the first retaining surface 291, the second retaining surface 292, and the indentations 294 in a direction facing the upstream surface 275. This means that starting from the downstream surface 285, the retaining surfaces 291, 292 and indentations 294 extend in the direction of flow that points away from the downstream surface. As a result, the retaining surface 291,292 can project more deeply into an air filter housing than the filter medium or the fold edges of the downstream surface 285.
[00201] The downstream surface 285 can be incorporated so that the folding edges of the filter medium that are located there are located at exactly the same height as the indentations 294.
[00202] Figure 13D shows an air filter element 200 analogous to air filter element 200 in Figure 13C; in Figure 13D, the downstream surface 285 is not located at the height of the indentations 294, but is instead separated at a certain distance from the indentation.
[00203] As a result, when inserted into a housing body, the retaining surfaces 291,292 not only project from the air filter element 200 more deeply into the housing body than the downstream surface 285, but also some support elements 290 do so.
[00204] Figures 13C and 13D also show a design of an air filter element in which the downstream surface 285 is closer to the upstream surface 275 than the retaining surfaces 291,292 and the indentations 294 and where the surface upstream 285 is located between upstream surface 275 and retaining surfaces 291, 292 and indentations 294 in an air flow direction through air filter element 200.
[00205] It should be noted that the distance from the downstream surface 285 from the retaining surfaces 291, 292 and the indentations 294 of the support elements can be variably incorporated and, for example, can be adapted to the circumstances and structural requirements within the housing body.
[00206] Figure 14 shows a sectional view of an air filter 100. Housing 105 is comprised of housing cover 120 and housing body 110; the housing body and housing cover are attached to each other and locked by means of locking elements 115 and a seal 205 seals the housing between the housing body and the housing cover.
[00207] Inside the housing body is located the main element 200 or air filter element 200 whose downstream surface has the shape of the envelope 265 and corresponds to the shape of the functional component 300. The functional component 300 is connected to the housing body 110 through filter collar 207.
[00208] The air flowing through the air filter element 200 and the functional component 300 leaves the air filter 100 through the outflow opening 140.
[00209] Figure 15 is an isometric view of an air filter 100 in which the air filter has a housing body 110, a housing cover 120, and locking elements 115 for locking the housing body on the housing cover . The housing cover 120 is provided with a first inflow opening 130 and the housing body 110 is provided with an inflow opening 140. Dirty air flows through the inflow opening 130 into the air filter or housing, it is filtered in the air filter, and leaves the air filter through the outlet or clean air connection 140.
[00210] Figure 16 shows a sectional view of an isometric description of the air filter 100 of Figure 15. The air filter element 200 is located inside the housing body 110; the air to be filtered passes through the air filter element 200 from the direction of the inflow opening 130 and leaves the housing body through the outlet or clean air connection 140.
[00211] In the region of the efflux opening 140, the air filter element 200 has a free volume 500. In the region of the free volume 500, the fold edges 225 on the downstream surface 285 of the air filter element 200 form an envelope and therefore a free volume of the air filter element; the profile of the air filter element or the shape of the envelope on the downstream surface is adapted to the position and outflow direction of the clean air connection 140 so that there are no boundary edges and no sharp deviation of the air flow leaving the air filter element 200 on the downstream surface. By reciprocal matching of the position of the outflow opening 140 and the geometry of the air filter element 200, that is, the shape and size of the free volume 500, it is possible to optimize the air flow through the air filter and inside the housing of the air filter and reduce a loss of pressure in the air flowing through the air filter.
[00212] Therefore, the free volume 500 allows the air flow to first exit the air filter element 200 on the downstream surface and then flow towards the outflow opening 140; the free volume 500 can be adapted to the position and size of the outflow opening 140. In this case, the air filter element 200 with variable fold depth folds can counteract a loss of filter area since the free volume 500 is only adapted to the size of the outflow opening 140 and a reduction in the fold depth is not present in all filter folds.
[00213] Figure 17 shows a sectional view of the air filter of Figure 16. As clearly evident, the outflow opening 140 has a circular shape and the envelope 265 extends so that the free volume 500 is adapted to the shape and geometry of the outflow opening 140. This ensures that the air flowing through the air filter element 200 leaves the filter folds on the downstream surface before the air flow is diverted towards the outflow opening 140. In particular , an increased deviation of the air flow that occurs at the downstream surface of the air filter element 200 can be realized by the fact that the support structure also extends along the envelope 265. The free volume 500 then constitutes a chamber or cavity inside the housing body 110, in which the air flow, which moves perpendicular to the fold edges 225 on the downstream surface 285 when it exits the air filter element 200 is deflected so that the air flow moves parallel to the for of the fold edges 225 on the downstream surface 285 since the outflow opening 140 requires an airflow shape that is parallel to the fold edges.
[00214] Figure 18 shows an isometric view of an air filter element 200 with a semicircular free volume 500. The air filter element 200 of Figure 18 corresponds to the modality of air filter element 200 in Figures 15 to 17 .
[00215] The support structure 290 has a first retaining surface 291 and a second retaining surface 292; an indentation 294 is located between the retaining surfaces 291, 292 and that indentation 294 corresponds to the shape of the envelope 265 or correlates to the shape of the envelope 265.
[00216] Figure 19 shows an air filter with a housing body 110 in which a flow rectifier 510 projects through a wall of the housing body into the air filter and the housing body.
[00217] The flow rectifier 510 can be, for example, a so-called inflow tulip, which protrudes into the housing so that the air flowing in the external direction is calmed before it passes through an air flow meter mass flow 515, that is, a uniform air flow is obtained without the mass air flow meter being separated at a great distance from the housing wall.
[00218] To ensure reliable measurement results of the mass air flow meter 515, it is important that the air flowing before the mass air flow meter is free from turbulence and free from air flows or air flow paths. uneven air. For this reason, if a mass air flow meter is provided, the air that flows before it must flow evenly. This can be done, for example, using a flow rectifier in the form of a tube; the air flowing through that tube essentially flows in a flow direction so that the flowable air flows through that tube without turbulence. In addition, turbulence can be reduced by a grid 511 (shown only schematically in Figure 19) mounted on the tube.
[00219] If the filtered air leaves the air filter element 200 on the downstream surface, then that air in the filter in Figure 19 must first be deflected since the outflow opening 140 is oriented orthogonal to the outflow direction of the air. This deviation of the air flow causes turbulence, this means that the mass air flow meter 515 cannot be mounted directly on the efflux opening or in its immediate surroundings or on the clean air connection 140 where air flows into the opening efflux.
[00220] Due to the fact that the flow rectifier or inflow tulip 510 protrudes into the housing and the housing body 110, the mass air flow meter can be mounted in the vicinity of the housing wall of the housing body 110 and in the meantime, it is possible to provide a free flow of flow around the mass air flow meter.
[00221] The free volume 500 of the air filter element 200 can be adapted according to the geometric shape of the flow rectifier 510. As a result, the envelope 265 of the fold edges on the downstream surface of the air filter element air 200 is adapted to a cross section of flow rectifier 510.
[00222] In other words, the inflow tulip can also be located centrally on a wall of the housing body and is surrounded by the air filter element in a ring or half ring, which makes it possible to select a maximum size of the filter area of the air filter element and as a result, the inflow tulip projecting into the housing body does not cause any significant loss in the filter area. Not all fold depths of the filter folds are adapted to the installation position of the flow rectifier; the only filter bends with a lower bend depth are those that match the flow rectifier cross-sectional area.
[00223] For example, the mass air flow meter 515 can be a hot film mass air flow meter. In this case, a measurement of mass airflow occurs through a change in electrical resistance in a metal film; the air flows before this metal film and causes it to cool, this changes the resistance of the metal film, making it possible to measure the mass air flow rate.
[00224] Figure 20 shows a side view of a housing body 110 with a housing cover 120; an air filter element 200 is located in the housing body.
[00225] The housing body 110 has two housing ribs 520 or housing support ribs 520, each with a respective retaining surface 521. The housing ribs 520 extend in a longitudinal direction between the upstream surface and the downstream surface of the air filter element 200. In this case, the housing ribs 520 project into the housing body 110 in the direction of the shape of the fold edges of the filter folds, that is, perpendicular to the upstream surface and downstream surface and towards the support element 290 of the air filter element 200.
[00226] The housing support ribs 520 serve to reinforce the dimensional stability of the housing body 110. The housing ribs 520 can penetrate a variable depth in the housing body and can even extend through the housing body towards the edges fold.
[00227] The housing ribs 520 have a retaining surface 521; this retaining surface is incorporated to accommodate an indentation 294 of the support element 290 of the air filter element 200 and then to position and secure the air filter element 200 within the housing body 110. The positioning of the indentation 294 against the retaining surface 521 ensures that the filter folds do not come into contact with the housing support ribs; instead, the housing support ribs 520 are contacted only by the support structure 290.
[00228] Figure 21 shows a sectional view along the cutting line B - B of Figure 20. The housing ribs 520 project laterally into the housing body 110 and the air filter element 200. As illustrated above, the penetration depths of the housing ribs 520 are of variable dimensions and can also, for example, be incorporated as continuous from one housing wall to another housing wall.
[00229] Figure 22 shows a side view of a housing body 110 with a housing cover 120. The housing body 110 has two housing supporting ribs 520; a first housing support rib 520 has a first retaining surface 521 and a second housing support rib 520 has a second retaining surface 521.
[00230] The housing support ribs 520 can have different heights, that is, they span in the longitudinal direction between the upstream surface and the downstream surface of the inserted air filter element, and totally different geometric dimensions, for example, widths.
[00231] Figure 23 shows an isometric view of an air filter element 200 corresponding to the housing body 110 of Figure 22.
[00232] The air filter element 200 has two free volumes 500; a first free volume 500 in first indentation 294 are formed by a first retaining surface 291 and a second retaining surface 292, respectively, while a second free volume 500 and a second indentation 294 are formed by the second retaining surface 292 and another surface retainer 291, respectively.
[00233] Figure 24 is an isometric view of an air filter with a housing body 110; the housing body 110 has a single housing support rib 520.
[00234] The explanations provided in Figures 20 to 23 apply analogously to the air filter modality shown in Figure 24, with the difference that Figure 24 shows only a single housing support rib 520.
[00235] Of course, as described above and below, a housing body 110 can also have a plurality of housing support ribs 520, in particular more housing support ribs than shown in the drawings, that is, it can have, for example, three or more housing support ribs.
[00236] Figure 25 shows a sectional view of an isometric description of the air filter in Figure 24.
[00237] Figure 25 shows how the housing support ribs 520 engage with the air filter element 200 and, through the support structure 290, secure the air filter element 200 on the housing body 110. In this case, the housing support ribs 520 engage with the free volume 500 of the support structure 290 or air filter element 200 from two sides.
[00238] Figure 26 is an isometric view of an air filter element 200 that is analogous to the description in Figure 25.
[00239] The air filter element 200 has two support elements 290, which are located perpendicular to a shape of the fold edges 225 on the upstream surface 275 and the downstream surface 285.
[00240] In the support element 290 and the air filter element 200, the envelope 265 forms an indentation 294 or a correlated free volume 500 of the housing support ribs 520; the indentation 294 is formed by the first retaining surface 291 and the second retaining surface 292.
[00241] Figure 27 shows an air filter 100 with a housing body 110 and a housing cover 120, which are fixed by means of locking elements 115. Within the housing body 110, in front of the outflow opening 140 , a geometry of resonator 520 or cavity resonator 530 is provided, which is incorporated to reduce the flow noise of the air flowing through the housing.
[00242] Figure 28 shows a sectional view of an air filter along the cut line A - A of Figure 27.
[00243] The resonator 530 is located inside the housing body 110, in the free volume 500 that extends along the envelope 265 on the surface downstream of the air filter element 200.
[00244] An air filter element with filter folds of varying fold depths makes it possible to mount a resonator within the housing body and increase the filter area of the filter medium of the air filter element at the same time . Therefore, resonator 530 is located directly in the outflow opening 140 or directly in front of the connection in an external clean air line. This makes it unnecessary to subsequently fix the resonator to the clean air line or the dirty air line outside the housing and at the same time, reduce the available filter area of the air filter element 200 to a minimum degree as the free volume 500 is adapted to the dimensions of the 530 resonator.
[00245] Figure 29 shows a sectional view of an isometric description of an air filter with a housing body 110 and a housing cover 120; a resonator 530 and an air filter element 200 are located within the housing body 110. In that case, the air filter element 200 has a free volume 500; the free volume 500 is adapted to the spatial dimensions of resonator geometry 530. In addition, that is, in a region of the housing body that is not occupied by resonator geometry 530, the filter folds of the air filter element 200 have a filter bend depth not reduced, so that the filter area of the filter medium is only minimally reduced by mounting the resonator 530 within the housing body 110.
[00246] Figure 30 is an isometric view of an air filter element 200 of Figures 27 to 29. As clearly evident, the downstream surface 285 and the support element 290 of the air filter element have a free volume 500 according to the shape of the envelope 265; free volume 500 is incorporated to accommodate a resonator.
[00247] Furthermore, the support elements 290 have a respective first retaining surface 291 and second retaining surface 292 located therein; an indentation of the support element 290 which is correlated to the free volume 500 is located or formed between the retaining surfaces 291,292.
[00248] Figure 31 shows an air filter 100; an air filter element 200 and a deflecting device 540 or deflecting ribs 540 are located in the housing body 110.
[00249] The deflector device 540 has a plurality of deflector ribs; each baffle rib has a baffle surface 541 and a baffle surface edge 542.
[00250] The individual deflecting ribs of the deflecting device 540 are arranged so that they cover a projected area of the downstream surface 285 of the air filter element to then prevent or reduce turbulence or irregularities in the air flow downstream of the surface to be downstream. As a result, the attachment of a deflector device 540 makes it possible to reduce the distance of a mass air flow meter 515 from the housing body 110 in the outflow opening 140.
[00251] The baffle surface edges 542 of the individual baffle ribs combined to form an envelope, which corresponds to the envelope 265 of the downstream surface 285 of the air filter element 200. This makes it possible for the volume within the housing body to be optimally divided into the air filter element 200 and the deflector 540 since the fold depth of the filter plies is adapted to the shape of the deflector surface edges 542 of the individual deflector ribs of the deflector 540.
[00252] Unlike variable filter bend depths, with an air filter element that has a constant filter bend depth, the depth of the filter bends might have to be oriented in that of the filter bend with the smallest depth filter bending. This could result in a significant loss of filter area.
[00253] Figure 32 shows a sectional view of an isometric description of an air filter whose housing body 110 contains an air filter element 200 and a baffle device 540. The drawing clearly shows the adaptation of the surface downstream of the air filter element 200 to the shape of the baffle surfaces and the shape of the baffle surface edges of the individual baffle ribs of the baffle.
[00254] Figure 33 shows a sectional view of an isometric description of an air filter element 200 with a baffle device 540.
[00255] In that case, the individual baffle ribs of the baffle device 540 are attached to the support element 290.
[00256] The airflow deflection function of the deflector 540 is shown with particular clarity in Figure 33. The airflow leaves the surface downstream of the air filter element 200 essentially in the direction of the shape of a filter bend 220 and is deflected by the deflector ribs of the deflector device 540 in a direction orthogonal to the shape of the filter fold 220.
[00257] The direction of deviation of the air flow through the deflector ribs can be naturally oriented at any angle and is adapted to the position of the outflow opening 140 in the air filter housing.
[00258] It should be noted that the deflector ribs of the deflector device 540 may be located on the support elements 290 of an air filter element 200; the baffle ribs of the baffle 540 may also be located in the housing body 110 of an air filter.
[00259] If the deflector device 540 is attached to the housing housing of an air filter, then the air filter element can be replaced without having to replace deflector device 540 together with it. It may not be absolutely necessary, for example, to replace the deflecting device together with an air filter element since the deflecting device is not subjected to the same amount of dirt as the air filter element whose main task is to filter out dust particles from the dirty air and then naturally subjected to a higher level of dirt and wear.
[00260] Figure 34 shows a side view of an air filter 100; the housing body 110 contains an air filter element 200 and three hydrocarbon adsorption filter elements 550 - in particular highly volatile hydrocarbons - which contain an activated carbon material, for example.
[00261] The hydrocarbon adsorption filter elements 550 can be, for example, a hydrocarbon adsorption unit. The hydrocarbon adsorption filter elements 550 in this case are located between the downstream surface of the air filter element 200 on one side and the clean air connection 140 on the other. The free volumes in the air filter element make it possible for the hydrocarbon adsorption filter elements, together with the air filter element 200, to be located in the housing body 110, thereby reducing the filter area of the filter medium of the air filter element 200 only to a negligible degree.
[00262] In particular, the hydrocarbon adsorption filter elements 550 can be attached to the housing body 110, i.e., such that they are capable of withstanding mechanical stress.
[00263] Figure 35 shows a sectional view of an isometric description of an air filter; the housing body 110 has an air filter element 200 and three hydrocarbon adsorption filter elements 550. The hydrocarbon adsorption filter elements 550 project into the downstream surface 285 of the air filter element 200 and inside the support element 290.
[00264] Figure 36 shows an air filter 100 with a housing body 110 and a housing cover 120. The housing body 110 has a first inflow opening 130 and a second inflow opening 131. The housing cover 120 it has the outflow opening 140. The air filter element 200 has a divided upstream surface 275; the upstream surface 275 is divided by a housing partition wall 561 of the housing body and forms a first dirty air chamber 562 and second dirty air chamber 563. The housing partition wall 561 has a sealing surface 567 so that the first dirty air chamber 562 is sealed off from the second dirty air chamber 563.
[00265] The housing body 110 also has an air flow housing flap 560, which is incorporated to basically close the second dirty air connection or second inflow opening 131, that is, in a first operating state. For example, the airflow housing flap 560 can be held in the closed position by means of a tension spring. It is naturally possible to provide other closing mechanisms, which open the air flow housing flap when a certain vacuum is present in the housing, thus allowing air to flow.
[00266] In the first operating state of the air filter 100, air flows into the air filter through the first inflow opening 130, is filtered through the first dirty air chamber 562, and exits the air filter through the outflow opening 140. If the first dirty air chamber is very dirty or clogged, for example, due to snow that gets stuck in the first inflow opening 130, then a vacuum in the air filter housing increases due to the fact that the outflow opening 140 continues to suck out the air from the air filter. Consequently, a vacuum, for example, can build up inside the housing, as a result, the airflow housing flap 560 opens the second inflow opening 131 so that air is sucked into the housing via the second inflow opening 131 and second dirty air chamber 563, in which case the air filter is operated in a second operating state.
[00267] Figure 36 shows that the variable bending depth can also affect the upstream surface 275 of the air filter element 200. Unlike the exemplary modalities shown above, where the downstream surface 285 has a respective free volume, in Figure 36, the upstream surface 275 has a free volume.
[00268] In this regard, it should be noted in particular that the upstream surface 275 and the downstream surface 285 can have any free volume format 500 for elements within the housing body 110 of the air filter 100, also as shown in the Figures 5F and 5G.
[00269] Figure 37 shows a cross-sectional view of an isometric description of an air filter with a first dirty air chamber 562 and second dirty air chamber 563, which are respectively supplied with air or dirty air through a first opening inflow 130 and second inflow opening 131; the second inflow opening 131 has an airflow housing flap 560, which is incorporated to allow air to flow through the inflow opening 131 only if the first dirty air chamber 562 becomes clogged. The housing partition wall 561 divides the first dirty air chamber 562 out of the second dirty air chamber 563.
[00270] Figure 38 is an isometric view of an air filter element 200 of the exemplary embodiments in Figures 36 and 37. The upstream surface 275 has two partial surfaces that are staggered and separated by the free volume 500 in the air filter element. air 200 and support element 290. As a result, the air filter element 200 in Figure 38 has filter folds with three different filter fold depths: the filter folds on the first part of the upstream surface 275, the filter in the vicinity of the free volume 500, and the filter folds in the second region of the upstream surface 275.
[00271] Also, the end or edge downstream of the support element 290, the end or edge upstream of the support element 290 can also naturally have a first retaining surface 291 and second retaining surface 292.
[00272] The retaining surfaces 291, 292 are mounted respectively on the upstream and downstream side of the air filter element, depending on the direction of insertion of the air filter element in the housing body. If the air filter element is inserted into the housing body with the upstream surface in front, then in a preferred exemplary embodiment, the retaining surfaces 291, 292 are located on the upstream edge of the support element. In another preferred exemplary embodiment on the other hand, the retaining surfaces 291, 292 are located at the downstream edge of the support element if the air filter element is inserted into the housing body with the downstream surface of the air filter element in front.
[00273] Figure 39 shows an air filter 100 analogous to air filter 100 which was shown in Figure 36.
[00274] Figure 36 shows the airflow housing tab 560 in the second inflow opening 131 in the open state; Figure 39 shows the airflow housing tab 560 of the second inflow opening 131 in the closed state. As a result, in the description in Figure 39, air is sucked into the air filter housing 100 only through the first inflow opening 130. In contrast, in Figure 36 air is sucked through the first inflow opening 130 and the second inflow opening 131 provided that the first dirty air chamber 562 of the first inflow opening 130 is not completely clogged. If the first dirty air chamber 562 in Figure 36 is completely clogged, then air is sucked in only through the second inflow opening 131 and the second dirty air chamber 563.
[00275] Therefore, Figure 36 shows the air filter in the second operating state (that is, the air that is sucked through the second inflow opening) and Figure 39 shows the air filter in the first operating state (this that is, the air that is sucked through the first inflow opening).
[00276] Also unlike Figure 36, the envelope 265 of the upstream surface 275 of the air filter element does not have a staggered transition to the adjacent fold edges, but a rounded transition. The rounded shape of the envelope 265 can be adapted, for example, to the movement of the opening of the airflow housing flap 560 and can then contribute to an additional increase in the available filter area of the air filter element.
[00277] Figure 40 shows a sectional view of an isometric description of the air filter shown in Figure 39.
[00278] The housing partition wall 561 has a retaining surface 568; this retaining surface is incorporated to accommodate, position, and secure the air filter element 200 in the region of a first retaining surface or second retaining surface 291, 292 of the support element 290. It is also evident from Figure 40 that the free volume 500 in the surface region upstream of the air filter element 200 downstream of the second inflow opening 131 is incorporated to allow an opening of the flap air flow housing flap.
[00279] Figure 41 is an isometric view of an air filter element 200 of an air filter of the type shown in Figures 39 and 40. It is clearly evident that the envelope 265 of the upstream surface 275 and the support element 290 it has a rounded shape around the second dirty air chamber 563.
[00280] An air filter element 200 with a free volume 500 of the housing partition wall 561 makes it possible for the first dirty air chamber 562 and the second dirty air chamber 563 to be separated by a housing partition wall 561 with a variable height (that is, in a direction from the downstream surface to the upstream surface); the filter bend depth can be adapted to the height of the housing partition wall. As a result, the size of the first dirty air chamber 562 and the size of the second dirty air chamber 563 can be adapted to each other and the size ratio can be optimized for specific requirements.
[00281] In the vicinity of the second dirty air chamber 563, the support element 290 has a first retaining surface 291 and a second retaining surface 292; the support element 290 between the first retaining surface 291 and the second retaining surface 292 has a rounded transition or rounded shape.
[00282] In the vicinity of the first dirty air chamber 562, the support element has only a first retaining surface 291.
[00283] Figure 42 is an isometric view of an air filter 100 with a housing cover 120, an air filter element 200, and a housing body 110. The housing cover 120 has an inflow opening 130; the housing cover diverts the air flow from the inflow opening towards the upstream surface 275. The flow direction of the air flow through the inflow opening 130 is parallel to the upstream surface 275 and must be correspondingly deflected by the accommodation. The housing body 110 has a housing rib 520 and an outflow opening 140 in an outflow setting 141.
[00284] The housing rib 520 can provide stability to the housing body, however the provision of the housing rib 520 can also be dictated by other requirements of the installation space of the air filter 100.
[00285] The air filter element 200 has a support element 290 and circumferential seal 205. The air filter element 200 also has a flat upstream surface 275 as well as a downstream surface 285; the envelope 265 of the fold edges on the downstream surface 285 forms a free volume; the free volume is adapted to the housing ribs 520 and its shape or the envelope of the downstream surface, for example, has a parabolic shape.
[00286] Also, the housing cover, which is incorporated to deflect the flow direction of the air flow on the upstream side, that is, from the inflow opening 130 to the upstream surface 275, the outflow adjustment 141 it is also incorporated to deflect the flow direction of the air flow on the downstream side, i.e., from the downstream surface 285 to the outflow opening 140.
[00287] It should be noted that an airflow deviation of any kind can be provided on the downstream side and on the upstream side.
[00288] Figure 43 shows a functional component 300, which is incorporated for use with the air filter 100 of Figure 42 and the corresponding main element 200 of Figure 42.
[00289] The upstream surface 311 of functional component 300 or additional filter element 310 is incorporated to correspond to free volume 500 and envelope 265 of air filter element 200 in Figure 43. Incorporating the functional component in this way increases the surface upstream 311 and the downstream surface 312 of the additional filter element 310, making it possible to increase the filter performance.
[00290] Figure 44 shows a central sectional description of an air filter 100 with a housing body 110, a housing cover 120, and an inserted filter element 200. A resonator 520, for example, a resonator geometry broadband or 530 cavity resonator, which is incorporated to reduce the flow noise of the air flowing through, is accommodated in a compact manner. The flow passes through resonator 530 perpendicular to the drawing plane in Figure 44. The resonator is located in the free volume 500 that extends along envelope 265 on the downstream surface of the air filter element 200. Resonator 530 is confined by an outer casing 600 or resonator housing. A part 601 of the outer housing 600 oriented towards the filter element 200 is formed by a part of the housing wall. A part 602 of the outer housing 600 is connected to the housing wall, for example, by means of welding. A resonator insert 603 is contained in the outer housing 600.
[00291] An air filter element 200 with filter folds of varying fold depths makes it possible to accommodate a resonator 520 in the housing body 110 and simultaneously increase the filter area of the filter medium of the air filter element 200. In the Figure 44, some filter folds are shown schematically with dotted lines. The fold edges 225, not shown, therefore, extend perpendicular to the drawing plane in Figure 44 and then parallel to the direction of flow through resonator 530.
[00292] The free volume 500 is adapted to the spatial dimensions of resonator 520. Furthermore, that is, in a region of the housing body 110 that is not occupied by resonator 520, the filter folds of the air filter element 200 have a filter bend depth not reduced, so that mounting the resonator 520 on the housing body 110 reduces the filter area of the filter medium by only a minimum amount.
[00293] Figure 45 shows an exploded view of the air filter components 100 shown in Figure 44. Part 602 of outer shell 600 or resonator housing 520 has a respective resonator connection 605 at each opposite end. Air flows in resonator 520 in one connection and again in another connection 520. Air flow through resonator 520 is separated from air flow through filter element 200. In addition to resonator 520, housing body 110 is provided with an outflow opening 140. At the opposite end, an inflow opening 130 is provided in the housing cover 120 (Figure 44).
[00294] Preferably, the filter element 200 has a respective support structure 290, which is equipped with an indentation 294, at each opposite end in the flow direction of the resonator 520.

权利要求:
Claims (15)
[0001]
1. Arrangement of an air filter element with an air filter element (200) and a functional component (300), the air filter element (200) having an upstream surface (275), a surface to be downstream (285), and a filter means (210); the filter means (210) extending between the upstream and downstream surfaces; at least the downstream surface has a lowered displacement (500) in some sections; the functional component (300), which is placed in a functional relationship with the air filter element (200), which projects at least partially into a free space produced by the lowered displacement (500); the functional component (300), which is placed in a functional relationship with the air filter element (200), is in a functional relationship with the lowered displacement (500) of the downstream surface (285, characterized by the fact that that the filter means (210) is a folded filter means composed of folds (220), the folds having a respective first fold sheet (230) and second fold sheet (240), which are joined respectively in one fold edge (225) by means of a fold sheet edge (231, 241; 232, 242); the first fold sheets (230) of adjacent folds being oriented essentially parallel; the first and second fold sheets (230, 240) extend between the upstream surface (275) and the downstream surface (285); the recessed offset (500) extends along a direction in which the fold edges (225 ) extend and the fold depth (250) varies in a direction transversal to the direction in q that the fold edges (225) extend.
[0002]
2. Air filter element arrangement according to claim 1, characterized by the fact that the recessed displacement (500) has a one-dimensional concave or convex shape.
[0003]
Air filter element arrangement according to claim 1 or 2, characterized in that a plurality of folds (220) with varying fold depths (250) are produced from a continuous intermediate mat.
[0004]
Air filter element arrangement according to any one of claims 1 to 3, characterized in that the filter element (200) has a support structure (290) and preferably, the support structure (290 ) has a lowered displacement (500), particularly in the form and an indentation (294), which corresponds at least partially to a shape of the lowered displacement (500) of the downstream surface, preferably the fold sheets (230, 240 ) are laterally incorporated into the support structure (290) at the edges of the fold sheet (233, 243) which do not join the fold sheet edges of respectively adjacent filter sheets, and preferably the folds (220) that extend through the lowered displacement (500) they are produced from a continuous intermediate mat.
[0005]
5. Air filter element arrangement according to claim 3 or 4, characterized in that the adjacent folding sheets (230, 240) are reciprocally stabilized by means of at least one spacer device, which in particular is extends parallel to the fold sheet edges (233, 243) which do not join the fold sheet edges of filter sheets respectively adjacent.
[0006]
An air filter element arrangement according to any one of claims 1 to 5, characterized in that the functional component (300) has an interface surface (301, 302) and in at least some sections, the The interface surface has a shape that corresponds to that of the lowered displacement (500) of the downstream surface (285).
[0007]
7. Air filter that has an air filter housing (110), an air filter element (200), and a functional component (300), the air filter element having an upstream surface (275) ), a downstream surface (285), and a filter means (210); the filter means (210) extends between the upstream surface (275) and the downstream surface (285); at least the downstream surface has a lowered displacement (500); the functional component projecting at least partially into the lowered displacement produced by the free space; the functional component having a functional relationship with the upstream or downstream surface of the air filter element, characterized by the fact that the filter medium (210) is a folded filter medium composed of folds (220); the folds having a respective first fold sheet (230) and second fold sheet (240), which are respectively joined at a fold edge (225) by means of a fold sheet edge (231, 241; 232 , 242); the first fold sheets (230) of adjacent folds being oriented essentially parallel; the first and second fold sheets (230, 240) extending between the upstream surface (275) and the downstream surface (285); the lowered displacement (500) extending along a direction in which the fold edges (225) extend and the fold depth (250) varies in a direction transversal to the direction in which the fold edges ( 225) extend.
[0008]
Air filter according to claim 7, characterized in that the air filter element element arrangement with the air filter element (200) and the functional component (300) is configured as an arrangement air filter element as defined in any one of claims 2 to 6.
[0009]
9. Air filter according to claim 7 or 8, characterized by the fact that the functional component (300) has an interface surface (301, 302); with at least some sections, the interface surface has a shape that corresponds to that of the lowered displacement (500) of the downstream surface (285).
[0010]
Air filter according to any one of claims 7 to 9, characterized in that the functional component (300) is incorporated as an additional filter element (310), which protrudes at least partially into the volume free produced by the lowered displacement (500); the additional filter element having an upstream surface (311) and a downstream surface (312); the downstream surface (312) of the additional filter element corresponding to the downstream surface (285) of the air filter element (200).
[0011]
Air filter according to any one of claims 7 to 10, characterized in that the functional component (300) is incorporated as a deflector device (540) that projects at least partially into the free volume produced by the lowered displacement (500) and the deflector has at least one deflector surface (541) whose deflector surface edge (542) is oriented towards the respective upstream surface (275) or downstream surface (285) of the deflection element air filter (200).
[0012]
Air filter according to any one of claims 7 to 11, characterized in that the functional component (300) is incorporated as a flow rectifier (510); the flow rectifier (510) is associated with an air mass sensor (516) that will be placed in a functional relationship with the air filter element; and the flow rectifier projects at least partially into the free volume produced by the lowered displacement (500).
[0013]
Air filter according to any one of claims 7 to 12, characterized in that the functional component (300) is incorporated as a housing support rib (520); the housing support rib has a retaining surface (521) for retaining the air filter element; and the housing support rib protrudes at least partially into the free space produced by the lowered displacement (500).
[0014]
Air filter according to any one of claims 7 to 13, characterized in that the functional component (300) is incorporated as a hydrocarbon adsorption filter element (550) that projects at least partially inwards of the free volume that is produced by the lowered displacement (500).
[0015]
Air filter according to any one of claims 7 to 14, characterized in that the functional component (300) is incorporated as a resonator geometry (530) that protrudes at least partially into the free volume that is produced by the lowered displacement (500).

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DE102016002247A1|2016-02-26|2017-08-31|Mann + Hummel Gmbh|Filter element, in particular for gas filtration|

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DE102016011950A1|2016-10-07|2018-04-12|Mann + Hummel Gmbh|Filter element, in particular for gas filtration|

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US20180111079A1|2016-10-24|2018-04-26|Baldwin Filters, Inc.|Air Filter with Outlet Receiver and Housing Assembly Incorporating Same|

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DE102017000792A1|2017-01-30|2018-08-02|Mann + Hummel Gmbh|Filter element with optimized flow guidance|

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WO2018197625A1|2017-04-28|2018-11-01|Mann+Hummel Gmbh|Filter device, particularly an air filter, and method for maintenance of a filter device and use of same|

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RU2020114596A3|2017-09-25|2021-12-09|

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EP3599009B1|2018-07-25|2021-06-23|Carl Freudenberg KG|Filter with perforated separator sheets|

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DE102018130552A1|2018-11-30|2020-06-04|Mann+Hummel Gmbh|Liquid filter|

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EP3946683A1|2019-03-27|2022-02-09|Donaldson Company, Inc.|Particle separator filter with an axially extending flow face|

法律状态:
2018-03-27| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|

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2019-09-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|

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2020-08-11| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|

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2020-11-24| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 14/01/2013, 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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DE102012000490A|DE102012000490A1|2012-01-13|2012-01-13|Air filter element and air filter|

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DE102012000490.7|2012-01-13|

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PCT/EP2013/050585|WO2013104796A1|2012-01-13|2013-01-14|Air filter element and air filter|

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