巴西专利BR112012005045B1 FLUID FILTER FILTER.

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专利摘要:
The present invention relates to a filter for filtering fluids, particularly gases, more particularly absorption of air, fuel, urea solution or engine oil, particularly from an internal combustion engine, particularly from a motor vehicle, or air. environment for introduction into the building or vehicle ventilation system, comprising a filter element (1) made of a filter medium (106) folded in a zigzag manner, with a dirty side (105) and a clean side ( 104). on the dirty side (105), a plurality of elongated depressions (656) are formed in the filter medium (14; 106), which extends between the dirty side of bent ends (102a) and the folded base of the dirty side (103a). approximately perpendicular to the pleated edges (f) of the filter medium (106) and implement corresponding elevations (658) on the clean side (104) such that on a dirty side of intermediate folded space (148a), in each case, expression days ( 656) on the two middle sections (120) delimiting the intermediate folded space (148a) are located directly opposite each other and each form a flow channel.
公开号:BR112012005045B1
申请号:R112012005045-1
申请日:2010-09-07
公开日:2019-07-09
发明作者:Gelase Mbadinga-Mouanda；Klaus Gehwolf
申请人:Mann+Hummel Gmbh；
IPC主号:

专利说明:

Descriptive Report of the Invention Patent for FILTERS FOR FLUID FILTERING.
Technical Field [001] The present invention relates to a filter for filtering fluids, particularly gases, particularly absorption of air, fuel or engine oil, particularly from an internal combustion engine, particularly from a motor vehicle, or air environment for introduction into ventilation systems of buildings or vehicles, comprising a filter element with a zigzag-folded filter medium having a dirty side and a clean side.
Prior art [002] The prior art describes different filters with folded filter media. In the known folded non-cylindrical filter elements, the heights of the attainable folds are limited, for example, for reasons of stability.
[003] The purpose of the invention is to provide a stable filter element with greater folds in heights as possible and a high filter efficiency as possible.
Summary of the invention [004] This objective is solved according to the invention since on the dirty side a plurality of elongated depressions are formed in the filter medium that extend between the thick sides of the folded ends and the folded base of the dirty side approximately perpendicular to the folding edges of the filter medium and makes corresponding projections on the clean side in such a way that on a dirty side of the intermediate folded space of two depressions, respectively, they are positioned directly opposite each other on the two middle sections delimiting the intermediate folded space and each partially forms a flow passage.
[005] According to the invention, the dirty side of the folded space
Petition 870190004035, of 01/14/2019, p. 4/46
2/37 intermediate are thus enlarged as a channel by means of depressions in various locations. Because of the flow passage, the flow path of the supplied fluid is optimized to improve filtration efficiency, reducing pressure losses in the filter element, and increasing the load capacity. The fluid can be filtered and therefore oriented evenly on the folded base so that the flow inlet on the surface of the filter medium is improved. This leads to uniform overload on the dirty side with separate foreign materials. The load capacity of the filter element is thereby increased and this extends the service life.
[006] In addition, the areas of the filter medium that are formed as depressions and projections stabilize the folded filter medium. In this way, filter elements that are high in relation to the fold distance can be built in a stable configuration.
[007] In an advantageous embodiment, in the center of at least one of the depressions a support can be formed that extends along the depression and the corresponding projection and on the dirty side forms a recess and on the clean side a raised portion.
[008] The support provides additional mechanical stabilization of the filter medium so that the risk of collapsing, that is, contact of adjacent sections of the filter medium in the area of the folding edge is reduced.
[009] Alternatively or additionally, advantageously on the clean side in the center of at least one of the projections an adhesive section can be arranged that extend along the projection. The adhesive section which is preferably extended across the entire height of the intermediate folded space stabilizes the section of the corresponding filter medium. Reduces the risk of deformation of the filter media section and fold collapse particularly when high
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3/37 pressure.
[0010] In an additional advantageous mode, on a clean side of the intermediate folded space, two projections, respectively, particularly supports or adhesive sections, on the two middle sections that delimit the intermediate folded space can support each other. As a whole, in this way, the mechanical stability of the filter element is improved, particularly the compressibility of the folds and the risk of collapse particularly when it occurs at high pressure are reduced.
[0011] Advantageously, the depths of depressions through the height of the folds can be substantially constant. Depressions or projections with uniform depth can be performed in a simple way.
[0012] Alternatively, the depths of depressions can advantageously decrease from the fold edges to the fold base. In this way, until now the dirty side formed in the flow passages becomes narrower towards the folding base; this positively affects the flow of the fluid to be filtered with respect to filtering efficiency, pressure losses in the filter element, and load capacity.
[0013] In an additional advantageous embodiment, between two adjacent flow passages at least one adhesive section can be arranged on the dirty side of the filter medium, respectively, so that it extends approximately perpendicular to the direction of the folding edges. The adhesive sections stabilize the corresponding sections of the filter medium in order to prevent deformation or collapse. In addition, the adhesive sections delimit adjacent flow passages; this has a positive effect on the flow path. Advantageously, adhesion interruptions can be provided that form a fluid connection between the flow passage. By means
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4/37 of adhesive interruptions it is possible for pressure compensation between adjacent flow passages to occur in order to prevent the risk of high pressure in the flow passages and a related collapse of the corresponding folds.
[0014] Advantageously, the height of at least one adhesive section perpendicular to the filter medium can vary so that the adhesive section in the folded filter medium with its free side facing away from the filter medium can rest flat on a free side corresponding section of an adhesive section that is positioned opposite in the intermediate folded space or on the surface of the opposite section. In this way, the adhesive sections support the sections of the filter medium so that the risk of collapse is reduced. As a whole, the stability of the filter element is improved in this way, particularly the compressibility of the filter element is reduced. The adhesive sections connect the intermediate fold spaces and improve the flow flow limit. This has an advantageous effect on the flow conditions so that the pressure loss in the filter element is reduced and the load capacity is improved.
[0015] In an additional advantageous mode, depressions and projections can be made in the form of grooves in the unfolded filter medium that extend perpendicularly to the folding edges. The filter medium, particularly as incessant material, can be supplied simply in advance in a separate manufacturing process with the appropriate grooves. Alternatively, the initially uniform filter medium can be supplied to an apparatus in which the grooves and folded lines are produced by relief. Preferably, in the same production step, the adhesive sections can be optionally applied and the filter medium can be folded along the fold lines.
Petition 870190004035, of 01/14/2019, p. 7/46
5/37 [0016] In another advantageous embodiment, on the dirty side a plurality of elongated depressions can be formed in the filter medium which extends between the thick sides of the folded ends and the folded base of the dirty side approximately perpendicular to the folding edges of the middle filter and performs on the projections of the corresponding clean side in such a way that on a dirty side of the intermediate folded space, two depressions, respectively, are directly positioned opposite each other on the middle sections that delimit the intermediate folded space and each one partially forms a flow passage, while the flow passage is delimited particularly by means of two lines of adhesives which are disposed between two adjacent depressions and / or projections on the filter medium as well as two sections of the adjacent filter medium. In this way, the intermediate folding space on the dirty side can be enlarged as a channel in various locations by means of depressions. By means of the flow passage, the flow path of the supplied fluid is optimized to improve the filtration efficiency, reducing pressure losses in the filter element, and increasing the load capacity. The fluid to be filtered is thus uniformly oriented towards the folded base so that the flow inlet on the surface of the filter medium is improved. This leads to uniform overload on the dirty side with separate foreign materials. The load capacity of the filter element and the service life are increased. Furthermore, the areas that are formed as depressions and projections of the filter medium stabilize the folded filter medium. In this way, filter elements that are high compared to the bend distance can be produced in a stable configuration.
[0017] In one embodiment of the invention, the filter element is formed from a filter medium which is comprised of cellulose, meltblown fibers, microfibers or nanofibers, fabric or knitted fibers,
Petition 870190004035, of 01/14/2019, p. 8/46
6/37 nonwoven or a combination of these materials.
[0018] In one embodiment of the invention, the filter element comprises a filter medium which is folded multiple times alternately in a manner similar to the accordion. In this context, by means of the filtering medium, the dirty side where the filter element is loaded with the fluid to be purified, is separated from the clean side. Along the folded lines alternately on the dirty side of the filter medium and on the clean side of the fold edges are formed which forms the folded tip which is alternately oriented towards the clean side and the dirty side. The spacing between the planes formed by the folded end of the clean side and the dirty side is defined as the fold height. The spacing between two adjacent folded ends is defined as the fold distance. The folded base is positioned opposite the folded tip on the other side of the filter medium, that is, the folded base is the space that is closed by the ends of the respective folds. Consequently, the edge of the clean side edge and the folded base of the dirty side are positioned on the same folding edge on the opposite sides of the filter medium and vice versa. The two edges of the material filter extending perpendicular to the folding edges and alternately between the dirty side and the clean side of the folding edges are referred to as the edge end face. In the folded state, the end face of the edges forms two opposite end faces. The sides on which the ends of the filter medium are located and which extend particularly in parallel to the folding edges are referred to as the terminal sides.
[0019] In an advantageous embodiment, the height of the fold is at least 50 mm, advantageously 100 mm or 150 mm and particularly advantageously 200 mm. In an additional advantageous embodiment, the filter element has a fold height of at least 300 mm. From this
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7/37 mode, the filter element can be provided with the particularly large filter surface area.
[0020] In one embodiment, the ratio of fold height to fold distance is at least between 50: 1 and 180: 1, preferably between 100: 1 and 160: 1, particularly preferred between 120: 1 and 140: 1.
[0021] In one mode, the fold distance is between 7.5 mm and
1.8 mm, advantageously between 2.5 mm and 3 mm.
[0022] In one embodiment, the filter medium is grooved or provided with buttons while the buttons are inserted on both sides of the filter medium and, in the folded state, are in contact with the respective sections of oppositely positioned filter medium.
[0023] This achieves a stabilization of the filter medium.
[0024] Alternatively or additionally, reliefs can be inserted into the medium which has a greater length / width ratio and extends between the folded tip and the folding base. The reliefs are advantageously designed so that in the intermediate folded space two or more reliefs are positioned directly opposite each other in the opposite middle sections and in this way a relief is supported on an opposite positioned relief. It is particularly advantageous to incorporate the reliefs in a wedge shape while the wedge, depending on the shape of the intermediate folded space, decreases or increases in the direction of the fold base. Furthermore, the reliefs can be advantageously glued to the oppositely positioned relief, for example, by means of hot melting. In one embodiment, lines of adhesives, for example, hot melt adhesive, are introduced into the folds and extend between the folded tip and the folded base. In this context, on the clean side as well as on the dirty side the adhesive lines are provided. In this context, before the assembly of the individual folds, at least two lines of adhesives are applied parallel to
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8/37 to each other and perpendicular to the direction of the folding edges in the filter medium.
[0025] In one embodiment, the adhesive lines are not continuous, but discontinuous in regular spacing.
[0026] In one embodiment, the adhesive lines extend between the folded tip and the folding base, but on the clean side and / or the dirty side, they are discontinued regularly. In an advantageous embodiment, the adhesive lines are discontinuous on the dirty side at least once between the edge of the edge and the fold base, respectively. The break is provided in this context, for example, centrally between the edge of the edge and the folded base and has a length of between 10 mm and 80 mm, preferably between 30 mm and 60 mm.
[0027] In an advantageous mode, on the clean side an interruption of the adhesive lines is provided that involves the clean side with a bent tip. In this way, the folds on the clean side are not glued together in the area of the folded ends.
[0028] Advantageously, at least one, preferably all, the adhesive lines on the dirty side can be directly opposite one / the adhesive line (s) on the clean side.
[0029] In an advantageous mode, the adhesive lines that have breaks are designed so that the interruption of the adhesive lines on the clean side and the adhesive lines on the dirty side does not overlap. In this way, it is ensured that in the area on the clean side of the folded tip as well as surrounding the folded base on the clean side an overlap of the adhesive lines on the clean side and adhesive lines on the dirty side is formed.
[0030] In one embodiment, at least two lines of adhesives have breaks that are arranged in the same spacing relative to the folded tip and in relation to the fold base. Linear lines
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9/37 which are formed by the start and end points of the individual sections of the adhesive lines thus extend in parallel to the folding edges.
[0031] In an alternative mode, the start and end points of the adhesive interruptions are oriented along a plurality of linear lines that extend parallel to each other and are positioned in relation to the folding edges at an angle of 10- 80 °, preferably 45 +/- 15 °.
[0032] In a preferred embodiment, start and end points of the adhesive line interruptions extend over at least two sets of linear lines while each set of linear lines comprises linear lines parallel to each other corresponding linear lines on the filter medium transverse to each other so that a zigzag or arrow-shaped extension of the interruptions of the adhesive lines on the filter medium is formed.
[0033] Alternatively, start and end points of the adhesive line interruptions can be defined by a set of curves where the curves particularly have the same shape, but in a perpendicular direction (+/- 30 ") to the edges of d work are displaced in relation to each other. In this context, for example, circle sections or ellipses, sinusoidal shapes or other regular oscillating shapes can be used.
[0034] In one embodiment, the filter has both on the clean side and / or on the dirty side a surface formed by the folding edges that, at least in a partial area, is not positioned parallel to the plane that is formed by the folded ends positioned opposite. In this way, the filter element can be adapted in a simple way by making better use of the space in the area on this side of the filter by inserting complex structures in the absorption absorber.
Petition 870190004035, of 01/14/2019, p. 12/46
10/37 an internal combustion engine to optimize the filtering action. By means of good contacts of the filter element in the geometry in the absorption path, the invention serves to improve the flow behavior on this side of the air inlet of the filter element. In an advantageous embodiment at least part of the surface that is formed by the tip bent on the dirty side is positioned at an angle of particularly 0-80 °, preferably 10-45 °, especially preferred 10-25 ° to the surface that is formed by the tip fold on the clean side.
[0035] In a particularly advantageous embodiment, the surface that is formed by the dirty side of the folded tip extends in an area of the filter element parallel to the surface that is formed by the folded tip of the clean side and at least a second edge of the area of the filter element at an angle of 0-80 ° p referably 1045 ° especially preferred 10-25 ° for the surface that is formed by the folded ends of the clean side, while in relation to the edge of the filter element the fold height decreases continuously. In this way, the flow inlet conditions in the air filter housing can advantageously be adapted to the conditions of the mounting space. For example, in areas that are less charged by the flow, in which the particle of the filter element charge is reduced, a reduced fold height can be provided. Furthermore, in this way the pressure loss in the filter element can be lower.
[0036] In one embodiment, the filter medium comprises a support layer and a filter layer on the flow inlet side while the filter layer on the flow inlet side has a fine fiber filter layer.
[0037] This arrangement has the advantage that on the flow inlet side the deposition of particles occurs within the surface close to the thin fiber layer or in the case of fine fibers properly, usually nanofibers in this context, completely on the surface of the
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11/37 thin fiber layer. In this way, it is prevented that small particles, particularly soot particles, can penetrate into the filter medium in the area of high flow velocity and clog its interior.
[0038] This is particularly advantageous for the height of larger folds because here the different sections of the filter medium, depending on the position in the filter element, are subjected to loads of different forces. As a result of the heterogeneous velocity distribution, local blockages of the surface area filter can therefore result in elements with high folds. Since, as a result of higher pressure loss, areas blocked over time are less fluid through, the area of excess flow velocity can migrate so that additional areas begin to become blocked so that life overall operating life (life) of the element would be reduced.
[0039] In one embodiment, a layer of volumetric ultrafine fiber is used and with a layer of the ultrafine fiber depth filter it is formed by storing the separated particles distributed across the entire thickness of the ultrafine fiber layer and thus prevents the accumulation of a dense filter mass. For this purpose, an ultrafine fiber layer of meltblown fibers is preferably used.
[0040] In one embodiment, the filter comprises a filter medium in which in the direction of the total flow at least one layer of a filter medium is arranged on a support while the flow inlet layer of the filter comprises a filter layer of fine fibers while the fine fibers are arranged inside the filter medium.
[0041] In one embodiment, the fine fibers are microfibers or nanofibers.
[0042] In one modality, at least one layer of a medium
Petition 870190004035, of 01/14/2019, p. 14/46
12/37 filter is arranged on a support while the flow inlet layer of the filter has a filter layer of fine fibers and the support is a 6.6 polyamide grid.
[0043] In one embodiment, the grid mesh width is between 100 and 150 pm.
[0044] In one embodiment, the filter layer has fibers with an average fiber diameter of ~ 2 pm.
[0045] In one embodiment, in the direction of the total flow at least one layer of a filter medium is disposed on a support, particularly a cellulose support or a cellulose filter medium, while the flow inlet layer of the filter has a layer of the fine fiber filter. In one embodiment, the flow inlet layer of the filter is a bulky ultrafine meltblown fiber filter layer with a thickness in the range of 0.01 - 0.3 mm while the average fiber diameter of the meltblown fibers is particularly approximately 2 pm. In this context, particularly the diameter of the lower fiber d50-2a is approximately 700 nm. In an additional advantageous embodiment, the weight of the ultrafine fiber layer is in the range of 5 20 g / m2.
[0046] In one embodiment, the ultrafine filter layer comprises nanofibers with diameters from 0.01 to 0.5 micrometers. The nanofiber ultrafine fiber layer is particularly less than 1 µm thick. In this way, the separated particles are deposited on the surface and form a filter mass. The fibers can be produced, for example, by means of electrospray.
[0047] In one embodiment, the thickness of the ultrafine fiber layer is 0.08 - 0.13 mm.
[0048] In one embodiment, the weight of the ultrafine fiber layer is 10 g / m2.
[0049] In one embodiment, the air permeability of the
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13/37 ultrafine fiber is in the range of 500 - 5,000 l / m2s.
[0050] In one embodiment, the air permeability of the ultrafine fiber layer is in the range of 1,000-1,500 l / m2s.
[0051] In one embodiment, the material of the ultrafine fiber layer is selected from the group consisting of polybutylene terephthalate, polycarbonate, polypropylene, polyamide, polyethylene terephthalate, polyvinyl alcohol, polyvinyl nitrate, polyvinyl acetate, polyvinyl halide , polyester, polyalcylene terephthalate, polyalkylene naphthalate or polyurethane.
[0052] In one embodiment, the support is comprised of a cellulose-based filter medium. In one embodiment, the weight per area of the surface support is between 50 and 200 g / m2.
[0053] In one embodiment, the support has an air permeability between 50 and 100 l / m2s.
[0054] In one embodiment, the thickness of the support material is in the range of 0.2 - 0.5 mm.
[0055] In one embodiment, the support is impregnated to be flame resistant.
[0056] In one embodiment, the connection between the support and the ultrafine fiber layer is produced by calendering.
[0057] In one embodiment, the ultrafine fiber layer is glued to the support.
[0058] In one embodiment, the filter element has at least two sections in which the surfaces are formed by the folded tip of the clean side and the dirty side extend in parallel, but a different spacing for the respective opposing surfaces. The difference in the height of the bending of at least two sections resulted in a staggered element that allows better use of space in complex assembly spaces.
[0059] In another mode, it also leans, contours
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Angled or curved 14/37 can be provided on the appropriate side of the inserted filter, while by means of continuous zigzag duplication a substantially uniform filtering action across the areas of the filter surface is fully ensured. On the other side of the filter element, a uniform flat surface without connection networks is provided here because the areas of different fold heights pass continuously inside each other.
[0060] In one embodiment, the folded tip has a shape that corresponds to a wedge or alternatively a truncated wedge. This means that the edge of the edge in the case of a truncated wedge shape in the center along the fold edge has a plateau that is substantially parallel to the plane that is formed by the folded ends. On both sides of the plateau, narrow transition areas of a folded tip join that, in relation to the plateau, are positioned at an angle of 45 (+ 35 / -30) ° preferably 45 ° - 80 °. The width of the plateau area is at most a quarter, preferably at most a fifth, and particularly preferred at most a sixth of the fold distance. In the case of the wedge shape, the transition areas are positioned at an angle of 90 +/- 30, preferably 60 ° 90 ° and pass with a sharp folding edge directly inside each other. The width of the transition areas in the case of the wedge shape is at most 35%, preferably at most 25%, of the bend distance, in the case of the truncated wedge at most a quarter, preferably at most a fifth, and especially a sixth , the fold distance.
[0061] In one embodiment, the folded tip has a multiple step shape while in a first area, starting at the folding edge, the two sections of the filter medium are resting substantially directly on each other or are positioned at an angle less than 10, preferably less than 5 °. THE
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The first area extends in this context over a length of less than 10 mm, preferably 5 mm +/- 0.2 mm. In an adjacent transition area less than 10 mm in length, preferably 5 mm +/- 0.2 mm, the opposing sections of the filter medium are positioned relative to each other at an angle of 10 ^o - 40 °, preferably 18 ^o - 30 °, particularly preferred 20 - 25 °. Through the remaining length of the fold, the opposing sections of the filter medium extend substantially in parallel and are preferably positioned with respect to each other at an angle of 0 to 0.2 or alternatively 0 ° to -0.2 °.
[0062] In one embodiment, the open transverse surface between two folds formed on the dirty side and / or the clean side where the medium to be purified flows inward or where the purified medium flows outward is less than the base surface of the folded base correlated. This means that the distance, which the two sections of the filter media define one fold of the bellows filter is in relation to each other, is smaller at one end of the area on the open side of this fold than in the area where the sections of the bellows filter media converge and are connected.
[0063] In a preferred embodiment, the rate of the dirty side transverse opening between two ends folded on the dirty side in relation to the surface of the base positioned within the same intermediate space at the bottom is formed by the folded base is less than 1, preferably less than 0.85, more preferably less than 0.7 and particularly preferably less than 0.4.
[0064] In one embodiment, the end faces are sealed by means of continuous adhesive lines. In this context, at least on the clean side, each fold is closed by hot melting which, in the folded state, is applied in a continuous line on the edge of the filter medium and on the erection of the closed folds, the latter in relation to
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16/37 to the end face. In another embodiment, a continuous or discontinuous adhesive line is also applied to the dirty side of the filter element in an area of the edge to stabilize the filter element.
[0065] In one embodiment, the sealing action on the end faces is performed by a textile or fabric material, for example, non-woven, particularly non-woven polyester, which is provided with a hot melt coating to seal the faces of the end, the side of the coated fabric is contacted with the filter bellows. In this context, the hot melt coating can be heated by means of infrared radiation before application to the end face and subsequently, in the plastic state, it is attached to the filter bellows. Hot melting penetrates into the folds of the filter medium and solidifies under cooling. Alternatively or additionally, the coating can be heated from the outside by infrared radiation or by contact with a hot counter member when the hot melt coating is in contact with the face of the filter bellows end.
[0066] In another embodiment, the filter element has a flat seal on the end faces with plastic material.
[0067] In one embodiment, the flat seal is formed by a substantially plate-shaped plastic part which is attached by flat adhesive to the face of the filter bellows end by means of a hot melt.
[0068] In one embodiment, the flat seal is formed by a fused polyamide, for example, polyamide 6 with caprolactam starting material. It is supplied in a liquid casting mold, subsequently the end face of the filter element is immersed in the still liquid plastic material. The plastic material hardens in the form of the casting mold on the face of the end of the
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17/37 filter element and thus closes the end face. Alternatively, a polyurethane can be introduced into the casting mold which, after curing the foam, will penetrate between the folds in the end face. In this way, a lightweight and flexible seal can be obtained.
[0069] In another embodiment, the flat sealing on the end faces is performed by means of a thermally smoothed plastic material, for example, polypropylene, polyamide, polyoxymethylene. In this context, a substantially plate-shaped portion of plastic is heated on the side that is to be attached to the end face by infrared radiation to the melting point strip and is subsequently pressed against the face of the filter bellows end. In this way, the filtering medium penetrates with its face from the edge of the edges into the smoothed plastic material and is connected to these over solidification of the plastic material.
[0070] In another embodiment, the flat seal on the end faces is made by a thermally smoothed material that swells when exposed to heat, particularly nitrile rubber. In this context, a film of this material is pressed against the faces of the end of the filter bellows and heated at the same time. This causes the material to soften, swell, close the face of the edge of the edges of the filter medium. Subsequently, the material hardens so that a quick and plug-in connection of the material with the filter medium is produced. In an additional advantageous embodiment, during the bonding process, a layer of nonwoven is introduced into the externally positioned surface of the thermally smoothed material that is facing out of the filter medium. It is connected with the thermally smoothed material in the same way as the filter medium. This has the advantage that the uniform surface and, furthermore, additional stabilization of the flat seal are
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18/37 obtained.
[0071] In one embodiment, the filter element has a circumferentially extending frame made of plastic material that covers at least partially the surfaces of the filter element that do not flow through. In this context, the parts of the frame on the end faces can be formed by the flat seal of plastic material or additional parts of the frame can be provided as long as they surround the end faces.
[0072] In an advantageous embodiment, the frame has a seal extending circumferentially that serves to separate the dirty side and the clean side. It can act axially and can be attached to the frame on the dirty side of the filter element. In this context, the seal can be oriented in the axial direction perpendicular to the flow entrance surface of the dirty side which is formed by the dirty side with the bent tip and can be contacted with a crankcase sealing surface above the entrance surface.
[0073] Alternatively, the seal can be provided below the flow inlet surface so that they extend circumferentially over the filter element while the sealing action is performed circumferentially over the filter element in a plane between flow inlet side and flow outlet side.
[0074] In addition, a radially external sealing action can also be provided which is connected to a circumferentially extending part of the frame that protrudes into the flow inlet surface on the dirty side which is formed by the folded ends on the side dirty.
Brief Description of the Drawings [0075] Other advantages, characteristics, and details of the invention result from the following descriptions in which the modalities of the invention will be explained in most cases detailed with auPetition 870190004035, from 01/14/2019, p. 21/46
19/37 xilio of the figures. It is shown in:
[0076] Figure 1 is a view of a modality of a filter according to the invention;
[0077] Figure 2 is a view of an additional embodiment of a filter according to the invention;
[0078] Figure 3 a detailed view of an arrangement of the adhesive lines on a filter according to the invention;
[0079] Figure 4 a detailed view of an alternative arrangement of the adhesive lines on a filter according to the invention;
[0080] Figure 5 shows an embodiment of the external shape of a filter according to the invention;
[0081] Figure 6 shows an additional embodiment of the external form of a filter according to the invention;
[0082] Figure 7 shows an embodiment of a tip of the edge of a filter according to the invention;
[0083] Figures 8 to 12 detailed schematic views of different layouts of the adhesive lines on a filter medium similar to the layout of figure 4;
[0084] Figures 13 to 15 schematic isometric illustrations of a fold of the filter element of the filter similar to the filter of figures 1 to 7, while here the lines of adhesives are arranged in different spacings in relation to each other;
[0085] Figure 16 schematically in the section of a filter medium, unfolded, of a filter similar to the filter of figures 1 to 15, in which on the dirty side and on the clean side adhesive lines are arranged, where the height of the adhesive lines perpendicular to the filter medium alternately increases and decreases with its spacing in relation to the adjacent folding edges;
[0086] Figure 17 schematically in the section a detail of
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20/37 a filter element with a filter medium folded from a filter similar to the filter of figures 1 to 16, in which the free sides of the adhesive sections of a section of the filter medium are each resting flat on one side of the adhesive sections of the section of the corresponding free filter media that is positioned opposite the intermediate folded space;
[0087] Figure 18 schematically in the section an alternative filter element of a filter similar to the filters of figures 1 to 17 in which the dirty side of the folded tip is compressed and the thick sides of the folded base are enlarged;
[0088] Figure 19 is a detailed isometric view of an additional embodiment of a filter element in which the dirty side depressions extending perpendicularly from the folded base to the folded tip are formed in the filter medium;
[0089] Figure 20 is a detailed isometric view of an additional embodiment of a filter element similar to the filter element of figure 19 in which the folded base of the dirty side in comparison to the dirty side of the folded tip are enlarged;
[0090] Figure 21 is a section of an additional embodiment of a filter element similar to the filter elements of figures 19 and 20 in which the depths of depressions through the height of the fold are approximately constant;
[0091] Figure 22 is a section of a filter element similar to the filter element of figure 21 in which the depths of depressions from the dirty side of the folded tip to the base folded on the dirty side decrease in a wedge shape;
[0092] Figure 23 is a section of a filter element similar to that of the filter elements of Figures 19 to 22, along a plane section parallel to a plane through the dirty side with a bent point where, between adjacent depressions, a line of adhesive
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21/37 is willing, respectively;
[0093] Figure 24 is a section of a filter element that is similar to the filter elements of figures 19 to 22, along a plane section parallel to a plane through the dirty side with the bent tip on which opposing supports are formed on the middle sections that are positioned opposite each other in the folding spaces on the clean side intermediate support each other;
[0094] Figure 25 isometric illustration of a filter medium, unfolded, for use in a filter element similar to the filter elements of figures 19 to 24 in which the depressions are made by means of grooves that extend perpendicularly to the edges folding;
[0095] Figure 26 is an uncoated PA 6.6 grid with a mesh width of 100 ± 10 m;
[0096] Figure 27 nanofibers;
[0097] Figure 28 versa;
[0098] Figure 29 the grid of figure 26 with a coating of the grid of coated figure 27 in the transuma section uncoated grid PA 6.6 with a mesh width of 102 ± 6 m;
[0099] Figure 30 nanofibers;
[00100] Figure 31 versa;
[00101] Figure 32 the grid of figure 29 with a coating of the grid of coated figure 30 in the transuma section uncoated grid PA 6.6 with a mesh width and 150 ± 9 m;
[00102] Figure 33 the grid of figure 32 with a nanofiber coating; and [00103] Figure 34 the grid of coated figure 33 in the transPetition section 870190004035, of 14/01/2019, p. 24/46
Verse 22/37.
Modality (s) of the invention [00104] Figure 1 shows a filter element 1 with a dirty inlet flow side 2 and a clean flow out side 3. The filter element is formed by a means filter 14 which is folded multiple times while the folds extend between the flow inlet side and the flow outlet side, that is, the folded tip is positioned on the flow inlet side and the flow out side, respectively . The side surfaces of the filter element 4 that does not flow through are closed by a polyester nonwoven which is provided on the side that is in front of the filter element with a hot melt layer. This hot melt layer provides a flat adhesive connection of the polyester nonwoven with the filter element by which also the face of the end of the filter bellows is sealed. The filter element 1 comprises main frame 6 and auxiliary frame 7 while the main frame support is an axial seal 8 that seals towards the flow outlet side 3 and is inserted into a groove in the main frame or within a groove between main frame and side surfaces 4. The auxiliary frame is connected to the side surfaces 4 by an adhesive connection and has radial surfaces 9 and axial surfaces 10 to support the filter element in a housing, not shown.
[00105] Figure 2 shows an embodiment of a filter element 1 with a dirty flow inlet side 2 and a clean flow out side 3. On the side surfaces 4 of the filter element 14 that do not flow through a plastic frame 16 it is attached by means of a hot melt of connection while on the faces of the end 5 by means of the hot melt the sealing action of the end face is also carried out. On the open end faces 15 they are inserted into the plastic frame 16. The
Petition 870190004035, of 01/14/2019, p. 25/46
23/37 plastic frame 16 supports on the flow inlet side 2 an axial seal 12 which can be compromised by a housing sealing surface, not shown. Furthermore, an adhesion 13 is provided which is connected with the plastic frame 16 and serves for improved handling of the filter element 1.
[00106] Figure 3 shows a detailed view of an arrangement of the adhesive lines on a filter element according to the invention. In this embodiment, hot melt adhesive lines 101 are inserted into the folds and extend between the folded tip 102 and the folded base 103. In this context, on the clean side 104 as well as on the dirty side 105 lines of adhesive 101 are applied. Before assembling the individual folds, at least two lines of adhesives 101 are applied parallel to each other and perpendicular to the direction of the fold edges 102, 103 in the filter medium 106. The lines of adhesives 101 are not continuous, but are discontinuous in spacings regular by an interruption 107. On the dirty side 105 the adhesive lines are discontinuous once between the edge of the edge and the fold base. The break 107 is located centrally between the edge of the edge and the folded base and corresponds in this length to one third to one half of the height of the fold. The break 107 starts at a spacing b from the folded base of the dirty side 103. Consequently, the folds on the dirty side are glued only in the area of the folded base and folded ends. On the clean side, an interruption of the adhesive lines through a length to which it is supplied surrounds the folded end of the dirty side. Consequently, folds on the dirty side are not glued to the area of the folded ends.
[00107] The spacings a and b of the folded base on the dirty side and edge edge on the clean side are configured so that the break 107 on the clean side and the line of adhesives on the dirty side do not
Petition 870190004035, of 01/14/2019, p. 26/46
24/37 overlap. In this way, it is ensured that in the area of the clean side folded tip as well as surrounding the clean side folded base an overlap of the adhesive line 101 on the clean side 104 and dirty side 105 is formed.
[00108] The linear lines x and y formed by the start and end points of the individual sections of the adhesive lines extend in parallel to the folding edges.
[00109] Figure 4 shows an arrangement of the alternative of the adhesive lines on a filter element according to the invention. In this embodiment, the start and end points of the adhesive line interruptions 101 are aligned in relation to a plurality of linear lines z that extend parallel to each other and form an angle of 10 - 80 ° with the folding edges F , preferably 45 + / 15 °. In this context, start and end points of the adhesive line interruptions extend over at least two sets of linear lines z 'and z', while each set of linear lines comprise linear lines parallel to each other, while the corresponding linear lines over the filter medium transverse to each other so that a course of the interruptions 107 in the form of an arrow or in the form of a zigzag of the adhesive lines 101 is formed on the filter medium.
[00110] Figure 5 shows an embodiment of the external shape of a filter element 1 according to the invention. In this embodiment, the filter element has at least two sections (301, 302) in which the surfaces 303 and 304 that are formed by the dirty side with the folded tip extend in parallel, but in a different spacing H (H ', H „ ) in relation to the respective opposing surfaces 305. The difference in the fold height of at least two sections results in a staggered element that allows a better spatial use in assembly spaces in a complex way.
Petition 870190004035, of 01/14/2019, p. 27/46
25/37 [00111] Figure 6 shows an embodiment of the external shape of a filter element 1 according to the invention. In this embodiment, the surface area that is formed by the folded tip on the dirty side extends in an area 101 of the filter element parallel to the surface that is formed by the folded tip on the clean side and at least a second area of the edge 202 of the element filter at an angle β of 30 ° to the surface 203 formed by the folded dots on the clean side, while in relation to the edge 204 of the filter element 1 the fold height h (h ', h) decreases continuously.
[00112] Figure 7 shows an embodiment of an edge tip on the dirty side of a filter according to the invention. In this embodiment, the folded tip has a multi-step shape while in a first area Z starting at the folding edge the two sections of the filter medium having an angle ζ with respect to each other that is less than 5 ^o . The first area in this context extends across a Z length of approximately 5 mm. In an adjacent transition area Σ ^with a length Σ of approximately 5 mm, the sections of the opposing filter media are positioned at an angle σ of approximately 24 ° to each other. Through the remaining stroke R of the fold, the sections of the opposing filter media extend substantially in parallel and, in comparison to the above-mentioned angles, are positioned relative to each other at a negative angle of approximately 0.2 ° so that the spacing of the clean side of the two sections of the filter medium becomes smaller along the additional stroke in the direction of the total flow δ. This has the result that the cross section of the intermediate spaces on the adjacent dirty side of this fold on both sides to the right and to the left becomes larger in the direction of the total flow in the δ direction.
[00113] In figure 8, a section of a filter medium 106 is shown
Petition 870190004035, of 01/14/2019, p. 28/46
26/37 which is similar to the filter medium 106 of figure 3 and is used in the filter elements for filters similar to the filter elements 1 of figures 1, 2, 5 and 6. Figure 8 shows the dirty side 105 of a middle section 120 of the filter medium 106 extending between two folding edges F. Folding edges F are embossed like doubling lines in the unfolded filter medium 106. In folded filtering means 106, folded tip 102 surrounds folding edges F. Over the filter medium 106, a plurality of elongated adhesive sections 122 extends along lines of linear adhesives 101. The adhesive lines 101 extend equidistant parallel to each other and perpendicular to the folding edges F. A spacing 132 between two adjacent adhesive lines 101 is approximately 25 mm, respectively.
[00114] Along each of the adhesive lines 101, two adhesive interrupts 107 of identical length are disposed between the adhesive sections 122. The width 134 of the adhesive interruptions 107 perpendicular to the fold edges F is approximately 15 mm. The adhesive breaks 107 of the adjacent adhesive lines 101, seen in the direction of the folding edges F, are displaced relative to each other.
[00115] Adhesive sections 122 of adjacent adhesive lines 101 each delimit a portion of passage 124 of a passage extending in the intermediate folded space 148a of the dirty side of folded filter media 106 between folding edges F, similar to modality to be explained further below in connection with figure 19. Adhesive interruptions 107 connect the respective adjacent passage parts 124.
[00116] Adhesive interruptions 107 of adjacent adhesive lines 101 make two passes 126 which, in the embodiment shown in figure 8, are extending in parallel in a V-shape and
Petition 870190004035, of 01/14/2019, p. 29/46
27/37 inclined with respect to folding edges F, respectively. The passages 126 in figure 8 are defined by two V-shaped curves indicated in the dashed lines in the form of imaginary linear lines 128. The linear lines 128 are similar to the sets of linear lines z 'and z according to the embodiment of figure 4. Linear lines 128 extend through the corresponding end of the points of the adhesive sections 122. Because of the arrangement of the dislocations of the displaced adhesives 107, it is prevented that the passages 126 extend continuously in parallel to the folding edges F.
[00117] In figure 8, risk areas 130 of the filter medium 106 which, on the operation of the filter without the use of the indicated adhesive sections 122 with adhesive interruptions 107 according to the invention, may collapse, for example, as a result under pressure, are shown as elliptical curves in an exemplary model.
[00118] In figure 9, an additional embodiment of a filter medium 106 is shown which is similar to the embodiment of figure 8. In contrast to the embodiment of figure 8, the adhesive interrupts 107 are arranged in the embodiment of figure 9 so that the passage 126 shown at the top in figure 9 extends in the form of a zigzag while the flanks 126a extend across three adjacent adhesive lines 101, respectively.
[00119] The passage 126 shown in figure 9 at the bottom also extends in a zigzag shape. However, in this configuration, the flanks 126a extend through two adjacent adhesive lines 101, respectively. The use of two passages 126 extending differently improving the stability of the filter medium 106.
[00120] An additional embodiment of a filter medium 106 according to figure 10 is similar to the filter medium 106 of the modali
Petition 870190004035, of 01/14/2019, p. 30/46
28/37 according to figures 8 and 9. In this embodiment, in figure 10 at the top of a passage 126 in the form of an upside-down V, similar to the V in the embodiment of figure 8, and at the bottom of a passage 126 with the course in the form of a zigzag, as in the mode of figure 9, are carried
[00121] An additional modality according to figure 11 is similar to the modality of figure 10, while here the passage 126 shown at the top in the figure is oriented as a V, as in the embodiment of figure 8.
[00122] In another embodiment of a filter medium 106 according to figure 12, which is similar to the embodiment of figures 8 to 11, an upper passage 126 at the upper end of figure 12 is shaped like a W. A passage 126 shown at the bottom of figure 12 is shaped like an upside-down W.
[00123] Passages 126, as shown in figures 8 to 12, can be combined in other ways as well. For example, more or less than two passages 126 can be provided between two folding edges F. Identical or different lengths 134 of adhesive interrupts 107 can be provided along adhesive lines 101 and / or in the case of different adhesive lines 101 . Lengths 134 may also be less than or greater than 20 mm. Also, the spacing 132 of the adhesive lines 101 can be different, also smaller or larger than 25 mm.
[00124] On the clean sides of the middle sections 120, not shown in figures 8 to 12, also the adhesive sections and adhesive breaks along the adhesive lines can be arranged. They can preferably be arranged so that the adhesive sections 122 on the clean side 105 project on both the last sides one of the adhesive breaks on the clean side, respectively, and
Petition 870190004035, of 01/14/2019, p. 31/46
29/37 overlap the adhesive sections adjacent the corresponding clean side of the adhesive breaks at the ends. On the other hand, the adhesive sections on the clean side can also project the last ones to the adhesive breaks 107 on the dirty side 105.
[00125] In figure 13, a detail of a filter element 1 is illustrated that is similar to the filter elements 1 of figures 1, 2, 5 and 6. In figure 13, two middle sections 120 are shown that extend in both the sides of a folded tip 102a on the dirty side. On the dirty side 105 of the filter medium 106, similar to the embodiment of figures 3, 4, and 8 to 12, a plurality of adhesive sections 122 and adhesive interrupts 107 along lines of equidistant adhesives 101 are arranged. The adhesive lines 101 extend perpendicularly to the folding edges F.
[00126] In an embodiment illustrated in figure 14 which is similar to the embodiment in figure 13, the spacings 132a, 132b, 132c between the adhesive lines 101 increase from an edge 136a of the filter element 1 to the right of figure 14 to the left edge 136b.
[00127] In another embodiment of a filter element 1 shown in figure 15, the spacings 132e to 132g increase the mirror symmetrically with respect to the central plane 138 which extends centrally between the edges 136a and 136b from the inside to the outside .
[00128] In figure 16, the middle section 120 of the filter medium 106, which is similar to the filter medium 14; 106 of figures 1 to 15 is shown in the folded state. Filter media 106 is moved horizontally in a transport direction 140 between an upper applicator tip 142a and a lower applicator tip 142b. The dirty side 105 of the filter medium is at the top in figure 16, the clean side 104 at the bottom. By means of the applicator nozzles 142a and 142b, the adhesive sections 122a are applied
Petition 870190004035, of 01/14/2019, p. 32/46
30/37 attached to the dirty side 105 and the adhesive sections 122b to the clean side 104 of the filter medium 106. On the dirty side 105, the height 144 of the adhesive sections 122 perpendicular to the filter medium 106 increases continuously from the fold edge front F in the direction of transport 140, in figure 16 to the right, facing the folding edge F to the right, to the left, within an adhesive section 122a as well as between the adhesive sections 122a that are separated from each other by adhesive interrupts 107. On the dirty side 107 the height 144 of the adhesive sections 122b provided because of this correspondingly decreases continuously from the front folding edge F to the rear of the folding edge F.
[00129] The dirty side of the adhesive sections 122a overlaps the clean side of the adhesive sections 122b so that the dirty side of the adhesive sections 122a projects the latter on the clean side of the adhesive breaks 107 and, vice versa, the clean side of the adhesive sections 122b projects the latter on the dirty side of the adhesive interrupts 107.
[00130] In a middle section not shown in figure 16 that follows middle section 120 in the direction of transport 140, the heights 144 of the dirty side of the adhesive sections 122a decrease from the rear of the folding edge F in the direction of transport 140 to the next folding edge. Consequently, on the clean side 104, in the next middle section, the height 144 of the adhesive section 122b increases from the rear of the folding edge F to the next folding edge. In analogy, a middle section, which is also not shown in figure 16 and preceding the middle section 120 illustrated in the direction of transport 140, is constructed with respect to the front folding edge F of the symmetrical mirror for the illustrated middle section 120.
[00131] In figure 17, a filter element 1 is shown in the longitudinal section; is a folded filter medium 106 which is similar to
Petition 870190004035, of 01/14/2019, p. 33/46
31/37 filter element 106 in figure 16. On the dirty side of the intermediate folded space 148a, the free sides of the dirty side of the adhesive sections 122a of a middle section 120 that are in front out from the surface of the filter element 106 they are resting on the sides of the corresponding adhesive sections 122a free from the respective middle section 120 positioned opposite. By means of the adhesive sections 122a resting on each other, adjacent middle sections 120 of an intermediate folded space 148 are supported in relation to each other and their shapes are maintained. Also, the adhesive sections 122 form limits for the passage sections 124 which are shown in figures 3, 4 and 8 to 15. As on the dirty side 105, on the clean side the sides of the free adhesive sections 122b on a clean side space intermediate folded 144b are resting flat against each other and thereby prevent a collapse of the folded spaces of the clean intermediate side 148b.
[00132] In figure 18, a section of an additional embodiment of a filter element 1 is shown in which the dirty side of the folded tip 102a, similar to the embodiment of figure 7, having a multistage shape. The total height of the 550 fold is approximately 5 cm to 40 cm, particularly 20 cm to 40 cm. The thickness 151 of filter medium 106 is approximately 0.5 mm.
[00133] The sections of the filter medium 120 that extend on both sides of the folded-tip dirty side 102a towards the adjacent folded base of the dirty side 103a, each having at the end of a first section 120a a first fold 552 facing the dirty side 105 in a Z spacing from the folding edge F. The Z length of the first area 120a is approximately 5 mm. The first areas 120a are positioned at an angle ζ of approximately 5 with respect to each other. Instead of, it can also be positioned in relation to each other at an angle ζ of
Petition 870190004035, of 01/14/2019, p. 34/46
32/37 less than 5 ° or between 5 ° and approximately 10 °.
[00134] At a spacing Σ θ from the first fold 552 the sections of the filter medium 120 having a second fold 554 facing the clean side 104. The length Σ of a second area 120b between the first fold 552 and the second fold 554 is approximately 5 mm. The second area 120b is positioned at an angle δ of approximately 24 ° to each other. It can instead of also be positioned at an angle between 10 ° and 24 ° or between 24 ° and 40 ° in relation to each other.
[00135] The lengths Σ θ / or Z can also be less than 5 mm or up to approximately 10 mm. The second adjacent area 120b, the third area 120c extend to a folded base of the dirty side 103a, respectively. The third area 120c is positioned at an angle of approximately 0.2 with respect to each other. Instead, it can also be positioned at a different angle, preferably between approximately -5 and approximately +5 with respect to each other.
[00136] The folded base of the dirty side 103a having an approximately V-shaped profile that is sharply tuned to the dirty side of the folding edge 102a. In contrast to it, the folded base of the clean side 103b has an approximately U-shaped profile. Clean side filters base widths 556 of the clean side filter bases 103b, at the level of two second folds 554 at a distance 560 from the dirty side of the appropriate folding edge 102a is less than the widths of the dirty side filter base 558 of the dirty side filter bases 103a at the corresponding distance 560 from the clean side of the folding edges 102b. The shape of the dirty side of the folded tip 102a is produced during manufacture provided that the filter medium 106 is folded first along the fold edges F and subsequently compressed in the first areas
Petition 870190004035, of 01/14/2019, p. 35/46
33/37
120a. In doing so, the material of the filter medium 106 is compressed in the first area 120a and, at the same time, the first fold 552 and the second fold 554 are produced.
[00137] In addition, as illustrated in an exemplary model in figure 18 over the middle section 120 shown to the extreme right, similar to the modalities in figures 1 to 3, 4, and 8 to 17, adhesive sections 122 and adhesive interruptions 107 along the corresponding adhesive lines 101 can optionally be arranged over the middle sections 120 on the dirty side 105 and / or the clean side 104.
[00138] Furthermore, similar to the modalities described below in connection with figures 19 to 25 and as shown in an exemplary model in figure 18 on the middle section 120 all the ways to the left, the middle sections 120 can be provided optionally on the clean side 105 with depressions 656 which, on the dirty side 104, produce projections correspondingly formed 658.
[00139] In figure 19 a section of a filter element 1 according to an additional embodiment is illustrated. On the dirty side 105 the filter medium 106 is embossed with a plurality of elongated depressions 656. The depressions 656 extend between the folded tip dirty side 102a and the folded base of the dirty side 103a perpendicular to the fold edges F. depressions 656 each have a depth 664a of approximately 1 mm. A width 666 of depressions 656 in the direction of the folding edges F is approximately 25 mm to 35 mm. The depth 664 of depressions 656, as shown in figure 21 in the cross section, is substantially constant across the height of the folds.
[00140] Alternatively, as shown in figure 22, the depth 664b of depressions 656b can decrease from the dirty side of the folded tip 102a to the folded base of the dirty side 103a. Nas do
Petition 870190004035, of 01/14/2019, p. 36/46
34/37 arms on the left as illustrated in figures 21 and 22, in an exemplary model with dirty side with folded tip 102a, similar to the modalities of figures 7 and 18, are compressed and of multiple configuration stages.
[00141] The depressions 656 are made with grooves that form on the clean side 104 corresponding projections 658. On the dirty side of the intermediate folded space 148a, the depressions 656 of the two middle sections 120 that delimit the intermediate folded space 148a are positioned directly opposite one the other and each partly forms a flow passage 660. The flow passages 660 extend perpendicular to the folding edges F.
[00142] In the area of the right depressions 656 in figure 19 a support 662 is formed in an exemplary model in the middle sections 120. The supports 662 project in the direction facing the clean side 104.
[00143] In an exemplary model, on the clean side 104 a drop of glue 622 is arranged, respectively, instead of the supports 262 in the flow passage 660 on the left in figure 19. The drops of glue 622 are used to stabilize the flow flow 660. The supports 662 can also be combined with the drops of glue 622, for example, in such a way that the drops of glue 622 are located on the supports 662.
[00144] Between the flow passages 660 on the dirty side 105 an adhesive section 122 with adhesive interrupts 107 is arranged, respectively. These adhesive sections 122 extend similar to the modalities of figures 3, 4 and 8 to 18 along the adhesive lines 101.
[00145] In figure 20, an additional embodiment of a filter element 1 is illustrated which is similar to the filter element 1 of the figure
19. In contrast to the filter element 1 of figure 19, the folded base of the dirty side 103a in the embodiment of figure 20 is enlarged compared to the folded base of the clean side 103b. As a whole, spaces
Petition 870190004035, of 01/14/2019, p. 37/46
35/37 intermediate folding 148a and 148b thereby having a similar effect as the intermediate folding spaces 148a and 148b of the filter element 1 of figure 18.
[00146] In figure 23 a section of filter element 1 of figure 19 parallel to a plane through the dirty side of the folded tip 102a is shown. In the area of one of the dirty sides of the intermediate folded space 148a, the adhesive sections 122 of the middle sections 120 positioned opposite each other are resting flat against each other, similar to the embodiment of figure 17, and thus delimit the flow passages 660. In figure 24 , a filter element 1 which is similar to the filter element 1 of figure 20 is also shown in a section parallel to a plane through the dirty side of the folded tip 102a. In the folding spaces on the intermediate clean side 148b, the supports 662 of the middle sections 120 are resting against each other and thus stabilize the folds and the filter element 1. In contrast to the embodiment of figure 20, in the embodiment of figure 24, as in the embodiment of figure 19, on the dirty side of the intermediate fold spaces 148a on both sides of the flow passages 660 adhesive sections 122 with adhesive interrupts 107 are provided. The heights 144 of the adhesive sections 122 perpendicular to the respective dirty sides of the surfaces of the filter medium 106 vary in the modalities of figures 23 and 24 in analogy to the modalities of figures 16 and 17 so that the adhesive sections 122 are resting flat against each other and each other's support.
[00147] In figure 25, an unfolded filter medium 106 is shown, which is provided with grooves for making depressions 656 and projections 658 according to the modalities of figures 19 to 24. The grooves extend perpendicular to the folding edges F. The projections 658 and depressions 656 can also be made by grooves that are discontinuous at the folding edges F.
Petition 870190004035, of 01/14/2019, p. 38/46
36/37 [00148] In all the modalities described above of a filter element 1 and of a method for producing a filter element 1, the following modifications are possible among other things.
[00149] The provisions of the adhesive sections 122 and the adhesive interrupts 107 along the adhesive lines 101, as described in figures 3, 4 and 8 to 16, the dirty side-tipped configurations 102, as described in figures 7 and 18, and the arrangements of depressions 656 and projections 658 on the filter medium 106, as described in figures 19 to 25, can be combined with each other in a significant way in a filter element 1.
[00150] Linear adhesive lines 101, instead of being perpendicular, can also be positioned on a slope, or in sections on a slope, in relation to folding edges F. Adhesive sections 122 and adhesive breaks 107, instead of extending along the lines of linear adhesives 101 may also extend along lines of adhesives that extend differently, for example, along lines of convoluted or sinuous adhesives.
[00151] Instead of being V-shaped, W-shaped, or zigzag-shaped, the passages 126 can also be extended in a different way, at least in sections, not parallel to the folding edges F .
[00152] In the modalities illustrated in figures 16 and 17, also any second middle section can be free of adhesive sections. In this case, the height 144 of the adhesive sections 122 over the other middle sections 120 can extend across the entire intermediate folded space. The sides of the free adhesive sections 192 are then resting flat on the respective opposing surfaces of the middle section 120 locations not provided with adhesive sections.
Petition 870190004035, of 01/14/2019, p. 39/46
37/37 [00153] Figures 26-34 show in the exemplary model some modalities of the filter medium which, in addition, for additional filter media, can be used for a filter according to the invention.
[00154] Figure 26 shows an uncoated PA 6.6 grid with a mesh width of 100 ± 10 pm, Figure 27 such as a grid with a nanofiber coating. Figure 28 shows the coated grid in the cross section. The air permeability of the uncoated grid is 10,000 l / (m2s), that of the coated grid 800-1,500 l / (m2s). The thread count is 69.9 n / cm, the thickness is 70 pm and the weight per surface area is 24 g / cm2. In figure 29, the PP 6.6 grid is illustrated that has a mesh width of 102 ± 6 pm. Figure 30 shows the coated grid and Figure 31 a cross-sectional view of the coated grid. The air permeability of the uncoated grid is ~ 8,600 l / (m2s), than that of the coated grid ~ 1,500 l / (m2s). The thread count is 65 n / cm, the thickness is 80 pm, and the weight per surface area is 35 g / cm2. An additional PA 6.6 grid is illustrated in figures 32 to 34. The mesh width here is 150 ± 9 m. The air permeability of the uncoated grid is ~ 11,000 l / (m2s), than that of the coated grid ~ 650-840 l / (m2s). The thread count is 47 n / cm, the thickness is 95 pm and the weight per surface area is 35 g / cm2. Figure 32 shows the uncoated grid, Figure 33 the coated grid, and Figure 34 the coated grid in the cross section.

权利要求:
Claims (9)
[1]
1. Filter for filtering fluids, particularly gases, particularly for absorbing air, fuel, urea solution or engine oil, particularly from an internal combustion engine, particularly from a motor vehicle, or ambient air for introduction into systems for ventilation of buildings or vehicles, comprising a filter element (1) with a zigzag folded filter medium (14; 106) with a dirty side (105) and a clean side (104), the dirty side (105) a plurality of elongated depressions (656) are formed in the filter medium (14; 106) extending between the dirty side of the folded tip (102a) and the folded base of the dirty side (103a) approximately perpendicular to the folding edges (F) of the medium filter (14; 106) and makes corresponding projections (658) on the clean side (104) in such a way that on a dirty side intermediate folded space (148a) two depressions (656), respectively, are positioned directly opposite each other on at two middle sections (120) delimiting the intermediate folded space (148a) and each partially forming a flow passage (660), characterized by the fact that in the center of at least one of the depressions (656) a support (662) is formed , extending along the depression (656) and the corresponding projection (658) and on the dirty side (105) forms a recess and on the clean side (104) a raised portion.
[2]
2. Filter according to claim 1, characterized by the fact that on the clean side (104) in the center of at least one of the projections (658) an adhesive section (622) being arranged that extends along the projection (658) .
[3]
3. Filter according to claim 1 or 2, characterized by the fact that on a clean side intermediate folded space (148b) two projections (658), respectively, particularly supports (662) or adhesive sections (622), on the two medium sections
Petition 870190004035, of 01/14/2019, p. 41/46
2/3 (120) that delimit the intermediate folded space (148b) support each other.
[4]
4. Filter according to any one of the preceding claims, characterized by the fact that the depths (664a) of depressions (656) through the height (550) of the folds are substantially constant.
[5]
Filter according to any one of claims 1 to 3, characterized in that the depths (664b) of depressions (656) decrease from the fold edges (F) and the fold base (103a).
[6]
6. Filter according to one of the preceding claims, characterized in that between two adjacent flow passages (660) at least one adhesive section (122) is arranged on the dirty side (105) of the filter medium (106), respectively , so that to extend approximately perpendicular to the direction of the folding edges (F).
[7]
7. Filter according to claim 6, characterized in that the height (144) of at least one adhesive section (122) perpendicular to the filter medium (14; 106) varies so that the adhesive section (122) in the middle folded filter pad (14; 106) with its free side facing away from the filter medium (14; 106) rests flat on a corresponding free side of an adhesive section (122) which is positioned opposite in the intermediate folded space (148a) or on the surface of the opposing middle section (120).
[8]
8. Filter according to any of the preceding claims, characterized by the fact that the depressions (656) and projections (658) are made in the form of grooves in the unfolded filter medium (106) that extends perpendicular to the folding edges ( F).
[9]
9. Filter according to any of the claims
Petition 870190004035, of 01/14/2019, p. 42/46
Previous 3/3, characterized by the fact that the sections of the filter medium (120) that extends on both sides from the dirty side of the folded tip (102a) to the adjacent folding base of the dirty side (103a), seen from the dirty side of the folded tip (102a), respectively, having a first fold (552) facing the dirty side (105) and facing back the second fold (554) facing the clean side (104).

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JP2020531242A|2020-11-05|Grooved filtration media, filtration media packs, and filtration elements

KR102332231B1|2021-12-01|assembling method of pleated filter for air purification

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CN110997099A|2020-04-10|Filter element with a spacer

同族专利:

公开号 | 公开日

CN102612398A|2012-07-25|

EP2477718B1|2014-03-26|

DE102009040202A1|2011-04-21|

EP2477718A1|2012-07-25|

US20140014572A1|2014-01-16|

US20120223008A1|2012-09-06|

US20120223009A1|2012-09-06|

WO2011026999A1|2011-03-10|

JP2013503735A|2013-02-04|

KR20120083305A|2012-07-25|

US8746462B2|2014-06-10|

JP5898075B2|2016-04-06|

WO2011027001A1|2011-03-10|

RU2012113550A|2013-10-20|

KR101865418B1|2018-06-07|

CN102612397B|2015-08-12|

EP2475449A1|2012-07-18|

US8479924B2|2013-07-09|

EP2475450B1|2016-08-03|

US20130062277A1|2013-03-14|

CN102612397A|2012-07-25|

US8328022B2|2012-12-11|

BR112012005045A2|2016-05-03|

RU2548413C2|2015-04-20|

BR112012005130A2|2017-12-12|

DE102009040202B4|2015-10-01|

EP2475449B1|2013-11-06|

MX2012002820A|2012-04-19|

CN102612398B|2015-01-28|

EP2475450A1|2012-07-18|

WO2011027000A1|2011-03-10|

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法律状态:
2018-04-10| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|

2018-11-27| B06T| Formal requirements before examination|Free format text: O DEPOSITANTE DEVE RESPONDER A EXIGENCIA FORMULADA NESTE PARECER POR MEIO DO SERVICO DE CODIGO 206 EM ATE 60 (SESSENTA) DIAS, A PARTIR DA DATA DE PUBLICACAO NA RPI, SOB PENA DO ARQUIVAMENTO DO PEDIDO, DE ACORDO COM O ART. 34 DA LPI.PUBLIQUE-SE A EXIGENCIA (6.20). |

2019-06-04| B09A| Decision: intention to grant|

2019-07-09| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/09/2010, OBSERVADAS AS CONDICOES LEGAIS. (CO) 20 (VINTE) ANOS CONTADOS A PARTIR DE 07/09/2010, OBSERVADAS AS CONDICOES LEGAIS |

优先权:

申请号 | 申请日 | 专利标题

DE102009040202.0|2009-09-07|

DE102009040202.0A|DE102009040202B4|2009-09-07|2009-09-07|filter|

PCT/EP2010/063133|WO2011027001A1|2009-09-07|2010-09-07|Filter for filtering fluids|

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