WO2017220416A1 - Filtre d'habitacle et ensemble de filtration - Google Patents

Filtre d'habitacle et ensemble de filtration Download PDF

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Publication number
WO2017220416A1
WO2017220416A1 PCT/EP2017/064609 EP2017064609W WO2017220416A1 WO 2017220416 A1 WO2017220416 A1 WO 2017220416A1 EP 2017064609 W EP2017064609 W EP 2017064609W WO 2017220416 A1 WO2017220416 A1 WO 2017220416A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter medium
fold
interior
medium
Prior art date
Application number
PCT/EP2017/064609
Other languages
German (de)
English (en)
Inventor
Peter Pekny
Dieter Weiss
Elmar RIEß
Dieter Schreckenberger
Emrullah Atilgan
Khalid Es-Saidy
Original Assignee
Mann+Hummel Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mann+Hummel Gmbh filed Critical Mann+Hummel Gmbh
Priority to DE112017003066.8T priority Critical patent/DE112017003066A5/de
Publication of WO2017220416A1 publication Critical patent/WO2017220416A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • B01D46/0006—Filter elements or cartridges installed in a drawer-like manner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
    • B01D46/009—Identification of filter type or position thereof, e.g. by transponders or bar codes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B01D46/522—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with specific folds, e.g. having different lengths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/20—Shape of filtering material
    • B01D2275/206—Special forms, e.g. adapted to a certain housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0608—Filter arrangements in the air stream
    • B60H2003/065—Details for holding filter elements in position

Definitions

  • the present invention relates to a filter element, in particular a cabin filter for filtering air for the interior of a vehicle or building. Furthermore, the invention relates to a filter assembly with such a filter element and a filter holder.
  • folded or pleated filter materials such as filter fleeces forming a fold pack
  • filter fleeces For filtering air for the interior of a motor vehicle, folded or pleated filter materials, such as filter fleeces forming a fold pack, are often used.
  • an initially flat filter material sheet is folded in a zigzag shape.
  • the fold pack is held by side straps and headbands or other frame.
  • Such filter elements can be fixed exchangeably in a filter holder.
  • the filter assembly thus formed may be installed in an air conditioning system of a corresponding motor vehicle.
  • DE 10 2005 048 841 B3 describes a cabin filter for a motor vehicle.
  • the interior filter comprises a frame as well as a filter medium completely peripherally fixed in the frame.
  • the frame is designed with guide shafts.
  • the interior filter can be inserted along its planar extent into a filter housing.
  • guide pins are arranged, which correspond to the guide shafts of the frame and guide the interior filter during insertion of the interior filter in the filter holder.
  • DE 10 2014 004 740 A1 describes, for example, an air filter for a ventilation device of a motor vehicle, with a planar extension along which the air filter can be inserted transversely to a flow direction into a flow cross-section of the ventilation device, and with a filter medium arranged along its planar extent, which is at least partially limited by at least one frame wall which has at least one cutout which is engageable with guide elements of the ventilation device for guiding the air filter when inserted into the flow cross-section, wherein the cutout designed as a notch on an edge of the frame wall and based on the Edge undercut is executed, whereby a supportability of the air filter is given when inserted in two directions transverse to the insertion direction.
  • Each of the notches comprises a limb which is open toward the edge. is formed. This leg is followed by an approximately perpendicularly arranged leg, which therefore extends approximately parallel to the edge.
  • the notches are arranged in the insertion direction congruent within the associated frame wall parts, whereby they ment when inserting into the flow cross-section of the ventilation device with a respective rail-likeêtsele- or guide rail can be brought into engagement.
  • DE 10 2012 005 188 A1 discloses a filter element for insertion into a housing of a ventilation or air conditioning system, comprising a bellows with folds and a front side, which is zuwendbar a wall of the housing, wherein the folds on the front side define each fold cross-sectional areas, the end face at least one guide slot is assigned and wherein a fold cross-sectional area in the region of a guide shaft has a different geometry than the fold cross-sectional areas of a plurality of folds and wherein a plurality of regular fold walls is provided, wherein each flanking two flank walls flank the guide shaft.
  • the filter comprises a peripheral frame of two head and two sidebands, wherein in a sideband openings for guide shafts are arranged.
  • DE 10 201 1 1 17 842 B3 discloses a filter element for insertion into a housing of a ventilation or air conditioning system, comprising a bellows with pleat walls and pleat back and a front side which is zuwendbar a wall of the housing, where-the end face is associated with a guide shaft wherein the guide shaft is formed by at least one breakthrough in the fold walls and / or in a front side seaming side strips and wherein the opening is provided with a reinforcement and wherein the reinforcement is formed as a separate component.
  • the present invention has the object to provide an improved filter element.
  • the filter element should have a simple structure.
  • a filter element with a folded filter medium.
  • the filter medium has at least one free fold end edge which delimits an opening at least in sections in order to introduce at least one pin, which is assigned to a filter receptacle for receiving the filter element, through the opening between folds of the filter medium.
  • an opening in the corresponding side of the filter medium which allows the insertion of the pin laterally into the filter medium into a wrinkle interspace, is particularly simple.
  • the opening is at least partially bounded by one or more free fold end edges.
  • a filter element is easy to produce.
  • the introduction of the at least one pin is preferably carried out in one direction parallel to the folds. But also an introduction perpendicular to the planar extension of the filter medium is conceivable.
  • the pin may have a round, oval, square or other type cross section. In particular, one, two, three or more such pins may be provided.
  • wrinkle front edge is meant the frontal, fiber ends, especially by cutting the filter medium produced wrinkle surface between two adjacent fold edges of a respective fold.
  • the at least one wrinkle end edge is “free”, it is meant that the at least one wrinkle end edge is free from side-band, i. without sideband, executed and / or further not glued or sewn with other folds or filter media sections and / or still not encapsulated or glued.
  • the filter element has a stabilization device, which stabilizes folds of the filter medium. Thereby, the filter element can be transported and handled without deforming significantly.
  • the stabilization device is formed in sections or entirely open along a side of the filter medium which has at least one free fold end edge.
  • the stabilization device is designed to be open in sections along the side, it is meant that the stabilization device is interrupted along the side. In other words, the stabilization device does not extend in sections along this side of the filter medium.
  • the stabilization device is designed to be completely open along the side of the filter medium, it is meant that the stabilization device is completely recessed along the side. In other words, the stabilizer does not extend along this side of the filter media.
  • the side of the filter medium is meant the plane in which the at least one fold end edge extends.
  • the stabilization device may be formed partially or wholly open on two opposite sides or two sides of the filter medium adjoining one another over corners.
  • the filter medium can be designed as a self-supporting material, i.e., its folds do not deform in filter operation despite the partial absence of the stabilizer in a manner which is detrimental to filter operation.
  • This embodiment is particularly desirable if the stabilizing device is provided only on one or a few sides of the filter medium.
  • the stabilization device has at least one sideband, a headband and / or a reinforcement on the outflow or outflow side.
  • the arrival or downstream side is the Rohcel. Pure side of the filter element meant.
  • the at least one sideband and / or the at least one headband may be formed with an L-angle.
  • the L-angle can be connected in particular cohesively to at least one pleat tip of the filter medium.
  • the at least one sideband, the at least one headband and / or the at least one reinforcement are formed integrally or in one piece with one another.
  • one-piece it is meant that the elements forming the stabilizer are fixed together, for example wise using fasteners, are connected to a part.
  • the stabilization device can also be produced in several parts.
  • the stabilization device may consist of a plurality of elements, for example the at least one sideband, the at least one headband and / or the at least one reinforcement, the elements being provided separately from one another, ie not connected to one another.
  • integral is meant that the stabilizer-forming elements are made of one and the same material and of one piece.
  • the stabilization device can be produced, for example, as a one-piece plastic injection-molded part.
  • the at least one sideband, the at least one headband and / or the at least one reinforcement surrounds the filter medium.
  • the side band may be pocket-shaped, so that fold end edges of the filter medium are received in the pocket formed.
  • the reinforcement is formed as a grid.
  • the grid may, for example, comprise intersecting longitudinal and transverse elements, which are in particular formed integrally with one another.
  • the grid may be produced in particular by plastic injection molding.
  • the grid may have an edge which surrounds the filter medium.
  • the reinforcement has at least one strut, which is connected at its respective ends to opposite headbands of the stabilizing device.
  • at least one strut can be provided.
  • the at least one strut can be designed, for example, strip-shaped, in particular with a rectangular profile.
  • the connection can be provided in a materially coherent manner, for example by means of gluing, fusing or welding. Additionally or alternatively, a positive connection, in particular by means of the aforementioned pocket-shaped configuration, can be achieved.
  • the filter medium has a polygonal shape, wherein the side extends between two corners of the polygonal shape.
  • the filter medium may be rectangular or pentagonal. The combination of a rectangular shape with a semicircular shape is conceivable.
  • At least one first fold of the filter medium for the insertion of the at least one pin has a lower height than a second fold adjacent thereto. Due to the smaller height of the first fold a recessed area is created, in which the at least one pin can be inserted.
  • the pleat spacing varies such that the recessed area is created for insertion of the at least one pin.
  • the filter medium is executed in sections flat between two folds, that is, in the area "missing" a fold. Also by this, the recessed area for inserting the pin can be created.
  • the filter medium is designed to be softer in a region encompassing the at least one free edge of the fold to form a seal with a wall of the filter housing than in a region lying further inwards.
  • the softer area nestles against the wall in such a way that a seal is created.
  • the seal is to be understood as meaning that preferably less than 3%, more preferably less than 1% and even more preferably less than 0.1% of the upstream air volume flow flow through between the filter element and the filter receiver, that is, pass unfiltered.
  • the percentages mentioned here can be determined such that the volume flow through the filter element is measured once in a state in which the inflow surface of the filter element is taped, and further measured in a state in which the inflow surface is not taped.
  • the air volume flow can be, for example, 100 to 600 m 3 / h.
  • the at least one fold end edge of the filter medium has frayed fiber ends to create the seal with the wall of the filter receptacle. In the state of the filter element inserted into the filter holder, the fiber ends then abut against the wall in a sealing manner. The fraying and the associated structural loss lead here to the desired softness of the filter medium.
  • the seal may also be provided otherwise. Thus, a seal may be attached, in particular molded, to the fold end edges.
  • the filter medium is reinforced adjacent to the region which encompasses the at least one free fold end edge.
  • the filter medium is reinforced adjacent to the frayed fiber ends.
  • the reinforcement can be provided by means of a reinforcing bead, in particular of hotmelt adhesive.
  • a filter assembly with a filter element, as described above, and a filter receptacle in which the filter element is received.
  • the filter element is preferably flowed through perpendicular to its planar extent.
  • the filter element in the plane of its planar extension in the filter holder can be inserted.
  • a filter receptacle is to be understood as meaning, in particular, a filter housing.
  • the filter housing can be designed as a receiving shaft.
  • the filter receptacle has at least one pin which extends into the filter medium via the side. In particular, when inserting the filter element in the filter holder so moves the pin through the page into the filter medium into it.
  • the at least one pin extends parallel to folds of the filter medium.
  • the at least one pin extends in a recessed area of the first fold.
  • a filter element with a folded filter medium and preferably at least one adsorption layer with activated carbon is provided.
  • the filter medium has at least one free fold end edge, which is adapted to seal against a wall of a filter receptacle for receiving the filter element.
  • a seal is created directly between the filter element and the filter holder, which does not rely on the use of an (additional) seal in a simple manner.
  • the filter element can have an additional seal on one or more sides, the seal being sealed on at least one other side (or over a partial area thereof) by means of the free wrinkle end edge (s) sealing against the wall of the filter holder - follows.
  • the adsorption layer with activated carbon serves in particular for odor binding.
  • the activated carbon used may be derived from wood or hard coal, polymer based, tar based or coconut shell based.
  • the base material for the activated carbon ion exchange beads are used which are polymer-based, for example made of synthetic resins, in particular made of divinylbenzene crosslinked polystyrene.
  • the activated carbon may be hydrophobic activated carbon.
  • Hydrophobic activated carbons are understood in particular to be those which have a comparatively low water absorption capacity.
  • an activated carbon is used, which at a relative humidity of 50%, a water absorption of ⁇ 10 mass percent, in particular based on the Adsorptionsast the isotherm. This water absorption is particularly preferably ⁇ 5% by mass.
  • the activated carbon has a BET surface area of greater than 600 m 2 / g, preferably greater than 800 m 2 / g (preferably measured according to DIN ISO 9277: 2003-05). As a result, a sufficient adsorption can be ensured in a small space.
  • activated carbon is used in pourable or pourable form, for example in the form of granular or spherical or otherwise shaped particles.
  • the activated carbon particles preferably have activated carbon particle sizes (average diameter) of between 0.1 and 1 mm, preferably 0.2 to 0.7 mm, and can be present for example in the form of granulated activated carbon or activated carbon ball.
  • an open-cell foam with free-flowing activated carbon can be used for the adsorption layer.
  • reticulated foams z For example, from plastics such as polyurethane, polyurethane ether or polyurethane esters used.
  • the pore sizes of the foam are between 20 and 50 ppi (pores per inch) or between 0.5 and 2 pores per mm. It is measured in a comparative optical process, under the microscope defines a fully formed pore as a "standard pore" and over a distance section, the pores occurring there are compared with this and counted. Pores that are not completely formed compared to the standard pore are proportionately counted.
  • Activated carbon particles are preferably introduced into this foam and preferably fixed.
  • the activated carbon particles are preferably fixed in the foam by means of an adhesive, for example by means of a two-component polyurethane-based adhesive. This can be achieved, for example be that the foam is first soaked with an adhesive and then, before the adhesive dries or hardens, activated charcoal particles are sprinkled in particular with shaking.
  • a two-component adhesive, a hot melt adhesive or an aqueous adhesive can be used.
  • a layer of a fixed bed of activated carbon is used as the adsorption filter layer.
  • This can be realized in a single-layer or multi-layer structure.
  • a carrier layer for example, a plastic stretch grid or a layer of a sheet material, for. B.
  • a particulate filter medium can be used as a carrier layer.
  • the carrier layer used is a nonwoven made of spunbonded or meltblown polyester fibers, for example PET fibers (polyethylene terephthalate) or PBT fibers (polybutylene terephthalate).
  • This may be a basis weight of 25-120 g / m 2 , preferably 50-100 g / m 2 , more preferably 60-90 g / m 2 and an air permeability> 3000 l / m 2 s, preferably> 4000 l / m 2 s at a pressure difference of 200 Pa.
  • the air permeability is measured in particular according to ISO 9347.
  • the fill layer of activated carbon particles is applied to the carrier layer and preferably fixed on the carrier layer by means of a fine adhesive application.
  • the pour layer preferably comprises a coating of 100-1200 g / m 2 of activated carbon particles on the carrier layer. Preferably, between 200 and 600 g / m 2 are used.
  • the position of a fixed bed with carrier layer and pour layer preferably has an air permeability in the range of 800-1300 l / m 2 s, in particular between 900 and 1200 l / m 2 s and a basis weight in the range of 350 to 950 g / m 2 , in particular between 450 and 750 g / m 2 at a layer thickness, in particular in the range of 1 to 6 mm.
  • the adsorption filter layer has a layer structure of a plurality of fixed beds.
  • a first layer of a fixed bed with the side on which the activated carbon is arranged (activated carbon side) placed on the activated carbon side of a second layer fixed bulk and connected to this example by gluing.
  • a semifinished product is formed with two carrier layers or cover layers and interlayer therebetween.
  • Such semi-finished products can in turn be arranged one above the other several times to increase the filtration performance, for example between 2 and 10 semifinished products, preferably between 3 and 7 semifinished products.
  • arrangements are also conceivable in which the carrier layer of a layer of a fixed bed is in each case placed on the activated carbon layer of another fixed bed.
  • This arrangement can then be completed by a turned layer with a fixed bed or a cover layer.
  • a turned layer with a fixed bed or a cover layer.
  • the at least one adsorption layer is arranged between fiber layers of the filter medium.
  • the at least one adsorption layer comprises a bed of activated carbon or an open-cell foam with free-flowing active carbon.
  • the at least one adsorption layer is removed or recessed in an edge region of the filter medium which encompasses the at least one free fold end edge, in particular by trickling out or brushing out the activated carbon.
  • the edge area can therefore not be equipped in the manufacturing process from the outset with an adsorption layer, whereby the recessed edge area arises.
  • the activated carbon is fixed in a region lying further inwards with respect to the edge region, in particular by means of adhesive.
  • the filter medium is sealed in an edge region of the filter medium comprising at least one free fold end edge, in particular by means of welding, gluing or wax.
  • the filter medium is fluffy and / or softer in an edge region comprising the at least one free fold end edge than in a region located further inward with respect to the edge region.
  • the filter medium is reinforced adjacent to the edge region comprising the at least one free fold end edge.
  • the at least one free fold end edge is adapted to abut against the at least one side facing nose for sealing with the filter housing, to engage in a wall-side groove, abut against the wall by bending one of the fold end edge associated edge portion or against the wall under compression of a abut the edge of the edge associated edge portion.
  • a stabilizing device which stabilizes folds of the filter medium, the stabilizing device preferably being formed in sections or entirely open along a side of the filter medium which has at least one free fold end edge.
  • the stabilization device has at least one sideband, a headband and / or an upstream or downstream reinforcement.
  • the at least one sideband with pleated end edges of the filter medium, the at least one headband connected to a pleat end of the filter medium and / or the reinforcement with pleat tips of the filter medium.
  • the filter medium has a polygonal shape, wherein the side extends between two corners of the polygonal shape.
  • the at least one free fold end edge delimits, at least in sections, an opening in order to introduce at least one pin, which is assigned to the filter receptacle, through the opening between folds of the filter medium.
  • a filter arrangement is provided with a filter element, as described above, and a filter housing, in which the filter element is accommodated, wherein the at least one free fold end edge seals against a wall of the filter receptacle.
  • the at least one free fold end edge seals against the wall in the impact, and / or the seal is provided between the at least one free fold end edge and the wall of the filter mount such that less than 3%, more preferably less than 1% and even more preferably, less than 0.1% of an inflow-side air volume flow flow through between the filter element and the filter receiver.
  • the filter element is in particular a cabin filter for filtering air for the interior of a vehicle or building.
  • the cabin air filter is suitable for installation in an air conditioning system, in particular of a vehicle or building.
  • the filter element has the required properties, in particular rigidity and sealing properties, in order to actually be able to install it in an air conditioning system.
  • Semi-finished products are excluded from this definition.
  • the filter element can be used in motor vehicles, trucks, construction machines, watercraft, rail vehicles and in building technology or in aircraft application.
  • the stabilizing device or at least one sideband, a headband or a reinforcement of the same can be materially connected to the edge of the filter medium, in particular glued, welded or fused.
  • the stabilization device or at least one sideband, a headband or a reinforcement of the same can be heated and the filter medium can be pressed into the heated material.
  • the stabilization device or at least one sideband, a headband or a reinforcement of the same can be injection-molded onto the filter medium.
  • an adhesive can be used as filler material.
  • the stabilizing device or at least one sideband, a headband or a reinforcement thereof may be made of the same material as the filter medium.
  • the stabilization device or at least one sideband, a headband or a reinforcement thereof may be formed as a plastic injection molded component.
  • the stabilizer or at least one sideband, a headband or a reinforcement thereof may be stiff or flexible.
  • the "folded" filter medium may be folded or wavy. As convolutions zigzag or W-folds are known, for example.
  • the filter medium can be embossed and then folded into sharp edges at embossing edges.
  • As a starting material can serve a sheet material filter sheet, which is transformed accordingly.
  • the filter medium is for example a filter fabric, filter pad or a filter fleece.
  • the filter medium can be produced in a melt-blow process.
  • the filter medium may include natural fibers such as cotton or synthetic fibers such as polyester, polyphenylsulfide or polytetrafluoroethylene. The fibers may be oriented in, skewed and / or transversely to the machine direction during processing.
  • a corresponding filter element serves to filter fluid, ie gaseous and / or liquid media, for example air.
  • the gaseous medium or air here also includes gas or air-solid mixtures or gas or air-liquid mixtures.
  • an air conditioner may have the filter element.
  • the filter element may have a sealing device which seals a raw side associated with the filter element with respect to a clean side thereof.
  • the sealing device can be identical in construction to the stabilizing device or at least one sideband, a headband or a reinforcement thereof.
  • the sealing device may be formed as an additional component.
  • the sealing device can be attached to the filter medium, the stabilizing device or at least one sideband, a headband or a reinforcement thereof, the filter element or the filter holder.
  • 1 A to 1 D a filter assembly and a cabin filter according to an embodiment
  • FIG. 2A and 2B a cabin filter according to another embodiment
  • 3A and 3B a cabin filter according to another embodiment
  • 4A and 4B a cabin filter according to another embodiment
  • 5A and 5B a filter assembly and a cabin filter according to another embodiment
  • FIG. 6 shows a filter arrangement according to a further embodiment
  • FIGS. 7A and 7B show a filter arrangement according to a further embodiment
  • FIGS. 8A to 8E show different states of a production method and embodiments of different filter arrangements
  • 9A and 9B a filter assembly according to another embodiment
  • 10A and 10B a filter assembly according to another embodiment
  • Fig. 1 1 A and 1 1 B a filter assembly according to another embodiment
  • FIG. 12 shows a filter arrangement according to a further embodiment.
  • FIG. 12 in the figures, identical or functionally identical elements, unless otherwise indicated, have been given the same reference numerals.
  • Fig. 1A shows a perspective view of a filter assembly 1 according to an embodiment.
  • the filter arrangement 1 can be used, for example, in a vehicle or a building, in particular in an air conditioning system.
  • the filter assembly 1 comprises a cabin filter 2, which is accommodated in a filter housing 3.
  • the filter housing 3 is only indicated schematically to release the view of the cabin air filter 2.
  • the interior filter 2 comprises a folded filter medium 4 and preferably a stabilization device 5.
  • the filter medium 4 comprises, for example, a zigzag-folded filter material, in particular a non-woven plastic material. Instead of the zigzag folding, the filter medium 4 could also have a wave-shaped folding or another folding. Instead of a nonwoven material, the filter medium may also comprise, for example, a fabric or scrim.
  • the stabilizing device 5 generally serves to stabilize folds of the filter medium 4.
  • the stabilizing device 5 has a multi-part construction and comprises a reinforcement 6 in the form of a grille, for example arranged downstream, in the form of a grating and a sideband 7 and Headbands 8, 9.
  • the grid 6 is shown in greater detail in FIG. 1B in a perspective view.
  • the grid 6 comprises longitudinal and transverse elements 10, 11 and a frame 12 comprising these.
  • the frame 12 may have a shape corresponding to the filter medium 4.
  • the filter medium 4 has a pentagonal shape.
  • the pentagonal shape is formed by a rectangle, which is bevelled at its one corner.
  • the frame 12 has accordingly also this pentagonal shape.
  • the grid 6 may be formed, for example, in one piece, in particular as a plastic injection-molded component.
  • Fig. 1 C which shows a view I rotated by 180 °
  • the grid 6 is arranged on pleat tips 13 of the filter medium 4.
  • the grid 6 can in particular be coherently connected to the pleat tips 13, for example glued, fused or welded.
  • FIG. 1C shows the head bands 8, 9, which are in particular materially bonded, for example adhesively bonded, fused or welded, to a respectively assigned end fold 14, 15.
  • the headbands 8, 9 may each have an L-angle 16, which is connected to pleat tips 17 of the filter medium 4 opposite the pleat tips 13 in particular cohesively, for example glued, fused or welded.
  • the sideband 7 shown in FIG. 1A is in particular materially connected to the fold end edges 18 of the filter medium 4, for example adhesively bonded, fused or welded.
  • the side band 7 may be integrally formed with the head bands 8, 9 in one piece or in one piece.
  • the headbands 8, 9 and the side band 7 may for example be made of a nonwoven material. Alternatively, they may be made by a plastic injection molding process and have a rigid shape.
  • the stabilizing device 5 is formed completely open along a first and a second side 19, 20 of the filter medium 4. That is, along the sides 19, 20 no element of the stabilizing device 5, in particular no sideband 7, is provided.
  • the sides 19, 20 comprise a multiplicity of free fold end edges 21 of the filter medium 4. With a single fold end edge 21, the fold face between two adjacent fold tips (also referred to as folding or embossing edges), in particular by cutting the filter medium, is provided. 13, 17 of a respective fold, as illustrated in FIG. 1C by way of example for a fold 30.
  • the first side 19 extends from a first corner 22 to a second corner 23 and the second side 20 from the second corner 23 to a third corner 24 of the pentagonal shape of the filter medium 4.
  • the second side 20 is oblique to the course of the folds 28 - 33 oriented, for example, with an angle between 10 ° and 80 °.
  • In the region of the corners 22, 24 each end the headbands 8, 9.
  • the filter medium 4 is traversed by air L perpendicular to the plane E, ie from the inflow side AN toward the outflow side AB.
  • the filter housing 3 has pins 26, which extend from a shown in Fig. 1 A and 1 D wall 27 of the filter housing 3 in the space enclosed by the filter housing 3 interior. According to the embodiment, two pins 26 are provided. Alternatively, only one pin 26 or it could also be more than two, for example, three pins 26 may be provided.
  • FIG. 1C shows two different exemplary embodiments. On the left is shown that a fold 28 of the filter medium 4 may be performed with a lower height H, than the folds 29 adjacent to the fold 28. Right is shown in Fig. 1 C, that the fold gap 25 can be created by the Fold spacing varies. Accordingly, the fold 30 is spread further than the folds 31 adjacent thereto.
  • the pins 26 are executed according to the embodiment with a round cross-section. Alternatively, they could also have a polygonal or different cross section. About the pin 26 and this respective associated folding interstices 25 ensures that only the right type of cabin air filter 2 can be inserted into the filter housing 3. This avoids malfunctions.
  • the fold end edges 21 of the first and second sides 19, 20 can be made sealed. Alternatively or additionally, these may be provided with a seal, not shown, by means of which the cabin filter 2 with respect to the filter housing 3, in particular the wall 27 of FIG. 1 D, seals. Another possibility for achieving a seal between the interior filter 2 and the filter housing 3 may be to produce the filter medium 4 in a peripheral region 42 comprising the fold end edges 21 of a different material than a further inward region 43 of the filter medium 4.
  • the other material can be made of a sealing, in particular softer, material be made.
  • FIG. 1D A preferred embodiment for achieving the desired sealing is illustrated in more detail in FIG. 1D.
  • This shows, by way of example and by way of example, two folds 32, 33 adjacent to the wall 27 of the filter housing 3.
  • the folds 32, 33 are frayed in the region 42 at their fold end edges 21.
  • the frayed fiber ends are designated 35.
  • the filter medium 4 is reinforced adjacent to the frayed fiber ends 35 with a glue bead 36.
  • the frayed fiber ends 35 can be produced, for example, by roughening the filter medium 4 of the corresponding nonwoven material, fabric or fabric.
  • FIGS. 2A to 4B The exemplary embodiments according to FIGS. 2A to 4B will be explained below, with only the particularities with respect to FIGS. 1 A to 1 D being discussed.
  • the stabilizing device 5 comprises only the reinforcement 6. That is, in particular the side band 7 and the headbands 8, 9 of Fig. 1A are not provided.
  • the frame 12 can be provided with an edge 37. As can be seen in FIG. 2A, the edge 37 extends partially over the side having the end fold 14 of the filter medium 4, over the side of the filter medium 4 which has fold ends 18, and over the side of the filter medium 4 which has the end fold 15
  • achieved partial enclosure of the filter medium 4 causes a gain thereof, in particular in a plane parallel to the grid. 6
  • the grid 6 is not arranged on the downstream side AB, but on the upstream side AN.
  • the second embodiment illustrated with reference to FIG. 2A shows that the stabilizing device 5 does not have to completely omit the sides 19, 20 in order to allow the insertion of the pins 26. Accordingly, an embodiment is conceivable in which the sides 19, 20 - here illustrated for the side 19 - are formed open only in sections, so that only at least one wrinkle end edge 21 or - as in the present embodiment - two adjacent fold end edges 21, 21 'free, ie ROCbandlos, are formed. Accordingly, a sideband 38 is provided, which is completely recessed in the area of the fold gap 25, so that as a result two sideband sections 44, 45 are formed.
  • Such a section-wise cutout of the stabilization device 5 can be simpler to produce in terms of manufacture, in comparison with, for example, provision of holes in the sideband 38, for example by: 1. Slitting the sideband 38 and second to the first sideband portion 44 offset sticking of the second sideband portion 45 on the side 19 of the filter medium 4.
  • the sideband 38 could be used in particular in any other of the embodiments shown here.
  • FIGS. 3A and 3B An exemplary embodiment is illustrated with reference to FIGS. 3A and 3B, in which the grid 6 is formed in one piece, in particular in one piece, with the sideband 7. Headbands are in this case - although not excluded - not provided.
  • the stabilization device 5 thus formed can be produced, for example, as a plastic injection-molded part.
  • the side band 7 is formed with a pocket 39.
  • the folding edges 18 having Side of the filter medium 4 projects into the pocket 39.
  • the pocket-shaped geometry forming edge 40 of the sideband 7 thus encloses the filter medium 4 a. It can extend along the inflow and outflow sides AN, AB and the sides of the filter medium 4 assigned to the end folds 14, 15.
  • the filter medium 4 has a rectangular shape.
  • the stabilization device 5 saves one of the four sides, namely the side 19, completely. But also the side band 7 could be missing, so that the filter medium 4 would be formed open on opposite sides.
  • the reinforcement 6 is not designed as a grid, but as two parallel strips 41 which extend along the downstream side AB of the headband 8 to the opposite headband 9 and with these each firm, in particular cohesively, are connected.
  • the strips 41 may, for example, be produced as plastic injection-molded parts.
  • the strips 41 are each materially connected with pleat tips 17 of the filter medium 4, in particular glued, fused or welded.
  • FIG. 5A shows an interior space filter 2, which is preferably designed as a combined filter element and has a folded filter medium 4.
  • the cabin air filter 2 may, but need not, have a nature which corresponds to the embodiments described above, unless stated otherwise below. This also applies vice versa, so that the embodiments of FIGS. 1A to 4B can be developed according to the embodiments described below.
  • the folds 29, 30 (only two of the folds have been provided with reference numerals by way of example) have a varying height H. Further, the pleat spacing between the pleats 29, 30 may vary so that the distance A1 is unequal to the distance A2.
  • the filter medium 4 may be self-supporting, i. the folds 29, 30 are dimensionally stable at a proper flow in the filter operation.
  • the interior filter 2 or the filter medium 4 can have a rectangular shape (shown in solid line) or a trapezoidal shape (shown in dotted line) in plan view, that is, in the plane E of its planar extension.
  • a triangular, pentagonal or polygonal, round, semicircular (shown in dashed line) or oval shape is also conceivable.
  • a single or multiple curved shape of the filter medium 4 is possible, as explained in more detail later.
  • the filter medium 4 comprises a layer structure which, for example, comprises at least one adsorption layer 50 with activated carbon.
  • the adsorption layer 50 may comprise, for example, a bed of activated carbon or an open-cell foam with free-flowing activated carbon.
  • the layer structure may comprise one or more fiber layers 51, 52. At least one of the fiber layers 51, 52 may be formed as a particle filter, in particular fine filter for filtering out particles with a diameter 10 ⁇ and larger, preferably 2.5 ⁇ and larger.
  • one or more of the filter layers 51, 52 may comprise an antimicrobial substance, for example nanosilver, and / or an anti-allergenic substance, for example polyphenols.
  • one and the same filter layer 51 may comprise the antimicrobial substance and the antiallergenic substance.
  • the other filter layer 52 then preferably acts as a particle filter.
  • the interior filter 2 can be entirely (shown in FIG. 5A) or partially without additional seals or stabilizing elements, such as sidebands, attached thereto. Not only does this make manufacturing easier, but also possibly because components can be saved. Rather, this can also result in a better deformability of the interior filter 2, as explained in more detail in connection with FIGS. 9A to 12. In principle, a flexibility of the interior filter 2 can thus result around one (or even more) axis (s) N which lies in the plane E (see also FIG. 10A) of its planar extent.
  • a compressible stabilizing device 5 see FIG. 1 A
  • the stabilizing device 5 or their elements of an elastic material for example. Plastic, be formed.
  • the cabin air filter 2 is inserted into a filter housing 3 of the assembly 1 via an insertion opening 3a.
  • the insertion into the filter housing 3 can take place in a direction parallel to the fold extension (as illustrated by way of example on the top right) or perpendicular thereto (as illustrated by way of example below on the right).
  • the cabin air filter 2 can be clamped on its opposite sides 19, 20.
  • the seal between the free fold end edge 21, 21 'or the sides 19, 20 and the walls 27 of the filter housing 3 may be provided such that less than 3%, more preferably less than 1% and even more preferably less than 0.1 % of an upstream air volume flow L between the cabin filter 2 and the filter housing 3 to flow.
  • the walls 27 may have the pin 26 of FIG. 1A.
  • the interior filter 2 could be inserted in the filter housing 3 in Fig. 5A right down then from above into this and not inserted.
  • FIG. 6 shows a perspective view of a section in the region of a wall 27 from FIG. 5A according to one embodiment.
  • the wall 27 comprises a plurality of lugs 53, which project from the wall 27 and protrude into a respective fold gap 25.
  • the folds 29, 30 of the interior filter 2 lie with their respective two end edges 21, 21 'against a respective associated nose wing 54 laterally, whereby the desired seal is created.
  • the lugs 53 and / or the entire wall 27 may be made of polyurethane (PU) foam or another plastic, for example.
  • PU polyurethane
  • FIG. 7A shows a perspective view of a section in the region of a wall 27 from FIG. 5A according to another embodiment.
  • Fig. 7B shows a section VII-VII of Fig. 7A.
  • the wall 27 is formed with a groove 55, which follows the profile of the Faltenstirnkanten 21, 21 ', thus according to the present embodiment has a zigzag course.
  • the groove 55 may, as shown in Fig. 7B, taper, so for example have a triangular cross-section.
  • the folds 29, 30 dive with their fold end edges 21, 21 'into the groove 55, wherein, due in particular to a clamping of a respective fold end edge 21, 21' in the groove 55 due to its tapering shape, the desired seal is obtained.
  • the groove 55 and / or the entire wall 27 may, for example, be made of polyurethane (PU) foam or another plastic.
  • PU polyurethane
  • a further embodiment provides for the wall 27 to be formed from a fleece or to be coated with such a fleece.
  • the applied against the fleece pleat front edges 21, 21 ' provide in this embodiment, the desired seal.
  • FIG. 8A shows a section VIII-VIII of FIG. 5A according to one embodiment.
  • FIG. The fold end of a fold 29 is shown transversely to the machine direction M.
  • the fold end comprises an edge region 42 and a region 43 located further inward.
  • the width B of the edge region 42 can be between 1 and 3 mm, for example.
  • the edge region 42 has no adsorption layer 50 with activated carbon in order to avoid accidental trickling out when handling and operating the interior filter 2.
  • the adsorption layer 50 can either not be provided in the edge region 42 during the production of the filter medium 4 (corresponds to a recess in the edge region 42) or, alternatively, be removed later.
  • an increased amount of adhesive can be introduced into the edge region 42 instead of the activated carbon. This can be done, for example, via an application device 56 shown in FIG. 8D.
  • the latter has more adhesive nozzles in a corresponding edge region 42 'than in a corresponding region 43' lying further inward.
  • the removal of the adsorption layer 50 from the edge region 42 can be done in particular by brushing out or trickling out (in particular gravity) of the activated carbon.
  • Adhesive substance application preferably takes place only in the area 43 located further inward, but not in the edge area 42. For process-related reasons, both areas 42, 43 can nevertheless be coated with activated carbon in the production process, with the activated carbon subsequently being removed from the edge area 42 becomes.
  • the edge region 42 bends or bends upward or downward, as shown in FIG. 8B, and the wrinkle end edge 21 abuts against the wall 27 at least partially. Or, the edge region 42 is compressed against the wall 27 (as shown in FIG. 8C), whereby the desired sealing is achieved.
  • the adsorbent layer 50 is not removed.
  • the edge region 42 or also the entire filter medium 4 is sealed, in particular at the fold end edges 21, 21 'thereof (indicated here by way of example by a weld seam 57).
  • sealing by ultrasonic welding or hot air welding also using additional material, for example an additional nonwoven, and / or using a shearing device (in particular conical ring) which simultaneously cuts and welds (thereby enabling one cut / Welding process a filter medium raw material are cut, the outer edges of the filter medium 4 are generated and sealed, see the weld 57); Seal using wax, dispersion adhesive (Hirschleim), two-component adhesive or hot melt adhesive. The sealing then takes place, for example, in an identical manner, as described in connection with FIGS. 8B and 8C.
  • the sealing can also be combined with the embodiment in which the adsorption layer 50 in the edge region 42 is removed or recessed (FIG. 8A).
  • the sealing along the edge region 42 ie, into the plane of the paper or along the course of the end edges 21, 21 '
  • the sealing along the edge region 42 at least in a region 58 on the outside behind one end (transversely to the machine direction M, see Fig. 5A) of the adsorption 50th or over the entire edge region 42.
  • the sealing and / or removal / omission of the adsorption layer 50 in the edge region 42 can take place before or after the folding (pleating) of the filter medium 4.
  • FIG. 9A illustrates in a plan view a trapezoidal filter housing 3, into which a - in a relaxed state rectangular-shaped - interior filter 2 (FIG. 9B) is inserted and preferably held there at least partially clamped.
  • the trapezoidal shape of the filter housing 3 can create a free space for the passage of lines 59 to be omitted or the like (for example, in a motor vehicle). This deformability advantageously results from the fact that the interior filter 2 has no stabilization device and / or sealing devices which impede the deformation.
  • FIGS. 10A and 10B also show an embodiment which benefits from the good deformability of the present cabin filter 2.
  • the filter housing 3 of FIG. 10A has a rectangular insertion opening 3a.
  • the filter element 2 from FIG. 10B is forcibly guided into a (lying) S-shape.
  • the filter housing may have guide means 60.
  • the purpose of the S-shape is to create a free space for the passage of cables 59 to be omitted or the like (for example in a motor vehicle).
  • FIGS. 11A and 11B illustrate an embodiment in which a rectangular filter element 2 is pushed through a channel 61 into a filter housing 3 trapezoidal in plan view. Since the channel 61 has smaller dimensions than the interior filter 2 in its relaxed state, the cabin air filter 2 must be compressed before pushing through. In the filter housing 3, the interior filter 2 is then kept in an only partially relaxed state - this because of the deviating from the interior filter 2 geometry of the filter housing 3. In particular, because of the strained on its sides 19, 20 state of the cabin air filter 2 in the filter housing a good sealing effect is achieved.
  • FIG. 12 shows, in a schematic cross section, a filter housing 3 with a dumbbell-shaped housing. cross section.
  • a filter housing 3 with a dumbbell-shaped housing. cross section.
  • the cabin filter 2 may also be formed with a varying fold height H, so that the cabin filter 2 itself has a dumbbell-shaped cross section even in its relaxed state.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

Filtre d'habitacle (2) à insérer dans une installation de climatisation, qui comprend un moyen de filtration (4) plissé, le moyen de filtration (4) présentant au moins une arête de front de pli (21, 21') libre qui délimite au moins par sections une ouverture (25a) afin d'introduire à travers l'ouverture (25a) entre les plis (28 - 33) du moyen de filtration (4) au moins un tenon (26) qui est associé à un boîtier de filtre (3) destiné à prendre en charge le filtre d'habitacle (2).
PCT/EP2017/064609 2016-06-21 2017-06-14 Filtre d'habitacle et ensemble de filtration WO2017220416A1 (fr)

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DE112017003066.8T DE112017003066A5 (de) 2016-06-21 2017-06-14 Innenraumfilter und Filteranordnung

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DE102016007461.2 2016-06-21
DE102016007461.2A DE102016007461A1 (de) 2016-06-21 2016-06-21 Innenraumfilter und Filteranordnung

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WO2017220416A1 true WO2017220416A1 (fr) 2017-12-28

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06226024A (ja) * 1993-02-08 1994-08-16 Nippondenso Co Ltd 空調装置用エアフィルタ
DE19524677A1 (de) * 1994-07-07 1996-01-11 Nippon Denso Co Filtervorrichtung mit einem Filter
DE102004025274A1 (de) * 2003-05-22 2004-12-23 Valeo Matériaux de Friction S.A.S. Luftfilter und Luftzirkulationsanlage für ein Kraftfahrzeug mit einem Luftfilter
DE102005048841B3 (de) 2005-10-12 2007-07-05 Daimlerchrysler Ag Luftfilter für eine Belüftungsanlage eines Kraftfahrzeugs
DE202006018187U1 (de) * 2006-11-29 2008-04-10 Mann + Hummel Gmbh Filtereinsatz
US20110308213A1 (en) * 2009-03-17 2011-12-22 Mann+Hummel Gmbh Support grid and alignment appartus for a filter element and housing
DE102011117842B3 (de) 2011-09-16 2012-11-29 Carl Freudenberg Kg Filterelement mit einem Faltenwände durchbrechenden Führungsschacht
DE102012005188A1 (de) 2011-06-21 2012-12-27 Carl Freudenberg Kg Filterelement mit Führungsschächten
DE102014004740A1 (de) 2014-04-01 2015-10-01 Daimler Ag Luftfilter für eine Belüftungseinrichtung eines Kraftwagens

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06226024A (ja) * 1993-02-08 1994-08-16 Nippondenso Co Ltd 空調装置用エアフィルタ
DE19524677A1 (de) * 1994-07-07 1996-01-11 Nippon Denso Co Filtervorrichtung mit einem Filter
DE102004025274A1 (de) * 2003-05-22 2004-12-23 Valeo Matériaux de Friction S.A.S. Luftfilter und Luftzirkulationsanlage für ein Kraftfahrzeug mit einem Luftfilter
DE102005048841B3 (de) 2005-10-12 2007-07-05 Daimlerchrysler Ag Luftfilter für eine Belüftungsanlage eines Kraftfahrzeugs
DE202006018187U1 (de) * 2006-11-29 2008-04-10 Mann + Hummel Gmbh Filtereinsatz
US20110308213A1 (en) * 2009-03-17 2011-12-22 Mann+Hummel Gmbh Support grid and alignment appartus for a filter element and housing
DE102012005188A1 (de) 2011-06-21 2012-12-27 Carl Freudenberg Kg Filterelement mit Führungsschächten
DE102011117842B3 (de) 2011-09-16 2012-11-29 Carl Freudenberg Kg Filterelement mit einem Faltenwände durchbrechenden Führungsschacht
DE102014004740A1 (de) 2014-04-01 2015-10-01 Daimler Ag Luftfilter für eine Belüftungseinrichtung eines Kraftwagens

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DE102016007461A1 (de) 2017-12-21

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