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DE4117550A1 - Plate filter insert - has concertina-folded sheet material where outer edges are held in place against frame to prevent leakage of unfiltered air - Google Patents

Plate filter insert - has concertina-folded sheet material where outer edges are held in place against frame to prevent leakage of unfiltered air

Info

Publication number
DE4117550A1
DE4117550A1 DE4117550A DE4117550A DE4117550A1 DE 4117550 A1 DE4117550 A1 DE 4117550A1 DE 4117550 A DE4117550 A DE 4117550A DE 4117550 A DE4117550 A DE 4117550A DE 4117550 A1 DE4117550 A1 DE 4117550A1
Authority
DE
Germany
Prior art keywords
strip
plate filter
filter
filter according
concertina
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
DE4117550A
Other languages
German (de)
Other versions
DE4117550C2 (en
Inventor
Horst Schneider
Horst Waibel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Filtersysteme GmbH
Original Assignee
Knecht Filterwerk 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 Knecht Filterwerk GmbH filed Critical Knecht Filterwerk GmbH
Priority to DE4117550A priority Critical patent/DE4117550C2/en
Publication of DE4117550A1 publication Critical patent/DE4117550A1/en
Application granted granted Critical
Publication of DE4117550C2 publication Critical patent/DE4117550C2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B01D46/52—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/05—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported
    • B01D29/07—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements supported with corrugated, folded or wound filtering sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
    • 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
    • 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
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/12—Pleated filters
    • B01D2201/127—Pleated filters with means for keeping the spacing between the pleats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/04—Permanent measures for connecting different parts of the filter, e.g. welding, glueing or moulding

Landscapes

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

Abstract

In plate filter insert with concertina-folded sheet material gas filter incorporates a sheet of concertina-folded material located within a frame. Strip of material of unalterable length extends over the entire length of one surface of the concertina-folded filter material. Peaks of filter material and the strip with which they are in contact are connected. Strip material and the stiffness of the folds together prevent the strip bending vertical to the filter plane. USE/ADVANTAGE - Arrangement ensures that the filter material is inserted square within the frame so that the outer edges are held in place against the frame to prevent leakage of unfiltered air around the sides to the filtered side. A suitable frame assembly with concertina-folded filter material (3) incorporates a strip (14) of non-extending material on the back (15) of the filter insert. Some of the filter peaks (15) are joined to the strip (14). The stiffness of the folds (16) in a direction vertical to the filter plane ensures that the strip (14) cannot be dislodged. The strip is made of a pliable material and bears a coating on the face in contact with the filter material with which it is joined.

Description

Die Erfindung betrifft einen Plattenfilter aus zick­ zack-förmig gefaltetem Bahnenmaterial nach dem Ober­ begriff des Anspruchs 1.The invention relates to a plate filter made of zig zigzag folded sheet material to the top Concept of claim 1.

Ein derartiger Plattenfilter ist beispielsweise aus der noch nicht veröffentlichten deutschen Patentan­ meldung (P 40 39 288.0) bekannt. Er besteht aus einem Filtereinsatz aus zick-zack-förmig gefalteten schmelzbarem Bahnenmaterial mit an den Stirnseiten verschlossenen Falten, der an den Rändern zur Abtren­ nung eines stromab liegenden Reinraumes dicht in ein Gehäuse einsetzbar ist, wobei die Stirnseiten der Falten zu vergrößerten Stirnflächen verformt sind, auf das Dichtmaterial aufgebracht ist.Such a plate filter is made of, for example the not yet published German patent message (P 40 39 288.0) known. It consists of one Filter insert made of zigzag pleats meltable sheet material with on the front sides closed folds, which on the edges for removal of a downstream clean room tightly into one Housing can be used, the end faces of the Folds are deformed into enlarged end faces, is applied to the sealing material.

Wenn ein solcher Plattenfilter in ein entsprechendes Gehäuse durch eine einseitige Öffnung eingeschoben werden soll, besteht die Gefahr, daß das Bahnenmate­ rial in Einschubrichtung - senkrecht zu den Faltli­ nien - sich elastisch so längenverändert, daß eine dichte Abtrennung zwischen Roh- und Reinraum durch die an gegenüberliegenden Stirnkanten angebrachten Dichtungen nicht mehr gewährleistet ist.If such a plate filter in a corresponding Housing inserted through a one-sided opening there is a risk that the web mat rial in the direction of insertion - perpendicular to the folds nien - changes elastically in length so that a tight separation between raw and clean room the attached on opposite end edges Seals is no longer guaranteed.

Hier Abhilfe zu schaffen ist das Problem der vorlie­ genden Erfindung.The problem here is to remedy this invention.

Gelöst wird dieses Problem durch eine Ausführung ei­ nes Plattenfilters nach den kennzeichnenden Merkmalen des Anspruches 1.This problem is solved by an execution Plate filter according to the characteristic features of claim 1.

Weitere zweckmäßige Ausgestaltungen nach der Erfin­ dung sind in den Unteransprüchen enthalten.Further expedient configurations according to the Erfin are contained in the subclaims.

Zur weiteren Erläuterung der Erfindung ist nachfol­ gend ein Ausführungsbeispiel in der Zeichnung darge­ stellt. Es zeigtTo further explain the invention is following Gend an embodiment in the drawing Darge poses. It shows

Fig. 1 einen erfindungsgemäßen Plattenfilter in Seitenansicht im Schnitt, Fig. 1 shows a plate filter according to the invention in sectional side view,

Fig. 2 eine Teil-Draufsicht gem. Fig. 1, Fig. 2 is a partial top view. Fig. 1,

Fig. 3 eine perspektifische Darstellung eines in ein Gehäuse eingeschobenen Plattenfilters. Fig. 3 is a perspective view of a plate filter inserted into a housing.

Ein in ein Gehäuse 22 in eine entsprechende Nut (Füh­ rungsbahn 23) einschiebbarer Plattenfilter 1 enthält ein aus zick-zack-förmig gefaltetem Bahnenmaterial 2 bestehendes Filterelement 3. Zur Abdichtung des Plat­ tenfilters ist das Filterelement 3 an seiner in Ein­ schubvorrichtung vorderen Stirnseite 4 und an seinen beiden Längsseiten 5 mit einer umlaufenden, aufge­ klebten Dichtung 6 aus Schaumstoff versehen, so daß gleichzeitig seitlich geschlossene Taschen des Fil­ terbahnmaterials geschaffen werden. Die Abdichtung an der der vorderen Stirnseite 4 gegenüberliegenden Stirnseite 7 erfolgt über eine aus Schaumstoff beste­ hende Dichtung 8, die an einem verlängerten Schenkel 9 einer in einer Endfalte 10 des Filterelementes 3 vorgesehenen U-förmigen Versteifung 11 durch Kleben befestigt ist und die in ihrer in das Gehäuse 22 ein­ geschobenen Lage an der äußeren Stirnseite des Gehäu­ ses 22 anliegt. Eine weitere U-förmige Verstärkung 12 aus einem Aluminiumblech ist an einer der Endfalte 10 gegenüberliegenden Endfalte 13 vorgesehen. Die beiden Verstärkungen 11, 12 erstrecken sich jeweils über die gesamte Breite des Bahnenmaterials 2.A plate filter 1 , which can be inserted into a housing 22 into a corresponding groove (guideway 23 ), contains a filter element 3 consisting of sheet material 2 folded in a zigzag shape. To seal the Plat tenfilter, the filter element 3 is provided on its front end face 4 in a pushing device 4 and on its two longitudinal sides 5 with a circumferential, glued-on seal 6 made of foam, so that laterally closed pockets of the sheet material are created. The seal on the front end 4 opposite end 7 is made of a foam existing gasket 8 , which is attached to an elongated leg 9 of a provided in an end fold 10 of the filter element 3 U-shaped stiffener 11 by gluing and in their the housing 22 is in a pushed position on the outer end face of the housing 22 . Another U-shaped reinforcement 12 made of aluminum sheet is provided on an end fold 13 opposite the end fold 10 . The two reinforcements 11 , 12 each extend over the entire width of the sheet material 2 .

Um den Plattenfilter 1, der in Einschubrichtung, d. h. senkrecht zu den Faltlinien des Filterelements 3, an sich elastisch längenveränderbar ist, so daß beim Einschieben des Plattenfilters 1 in ein entsprechen­ des Gehäuse 22 ohne besondere Vorkehrungen ein Zusam­ mendrücken in Einschubrichtung möglich wäre und damit das Anliegen der Dichtungen 6, 8 an ihren entspre­ chenden Gegenflächen nicht mehr gewährleistet ist, eine Steifigkeit zu verleihen, die zur geforderten Abdichtung im Gehäuse ausreicht, ist auf einer Plat­ tenfilterseite ein in Einschubrichtung über die ge­ samte Länge verlaufender Streifen 14 aus einer Alumi­ niumfolie mit den Rücken 15 einzelner Falten 16 fest verbunden. Die Verbindung erfolgt über eine auf dem Streifen 14 im Bereich des Filterelementes 3 aufge­ brachte Schicht 17 aus Hotmelt durch induktive Erwär­ mung über auf dem Streifen 14 an seiner der Schicht entgegengesetzten Seite anbringbare Induktionsschlei­ fen (nicht gezeichnet).In order to the plate filter 1 , which is in the insertion direction, that is perpendicular to the fold lines of the filter element 3 , itself resiliently variable in length, so that when inserting the plate filter 1 into a corresponding housing 22 without special precautions, a compression in the insertion direction would be possible and thus that Concern of the seals 6 , 8 on their corre sponding mating surfaces is no longer guaranteed to give a stiffness sufficient for the required sealing in the housing is on a plate tenfilter side in the insertion direction over the entire length of strips 14 made of an aluminum foil with the back 15 of individual folds 16 firmly connected. The connection is via a vapor on the strip 14 in the region of the filter element 3 applied layer 17 of hot melt by inductive Erwär mung about on the strip 14 at its the layer opposite side attachable induction loop fen (not shown).

Um die Handhabung des Plattenfilters 1 zu erleich­ tern, der beispielsweise auch auf einer gekrümmten Führungsbahn 23 in das Gehäuse eingeschoben werden kann, ist der an sich biegsame Streifen 14 auf seiner in Einschubrichtung hinteren Seite als Griff 18 aus­ gebildet, der z. B. durch Umformen des Streifenend­ stücks entsteht und als doppelwandiges Flachteil senkrecht zur Streifenbreite verläuft.To tern the handling of the plate filter 1 to erleich, which may for example also be inserted in a curved guide track 23 in the housing, the flexible per se strips 14 formed on its rear in the insertion direction side than the handle 18 from, the z. B. is formed by reshaping the strip end piece and runs as a double-walled flat part perpendicular to the strip width.

Zur besseren Fixierung des Filterelementes 3 auf dem Streifen 14 weist dieser einerseits an der vorderen Stirnseite 4 des Filterelementes 3 ein in Richtung des Bahnenmaterials 2 abgebogenes Ende 19 auf, das in die Verstärkung 12 der Endfalte 13 eingreift und an­ dererseits am gegenüberliegenden Ende des Filterele­ mentes 3 eine in Richtung des Bahnenmaterials 2 wei­ sende Sicke 20 auf, die, an der Verstärkung 11 anlie­ gend, in eine entsprechende Falte 21 des Filterele­ mentes 3 eingreift.For better fixation of the filter element 3 on the strip 14 , this has on the one hand on the front end face 4 of the filter element 3 an in the direction of the web material 2 bent end 19 which engages in the reinforcement 12 of the end gusset 13 and on the other hand at the opposite end of the Filterele mentes 3 a in the direction of the web material 2 sending bead 20 , which, based on the reinforcement 11, engages in a corresponding fold 21 of the filter element 3 .

Mit einer derartigen Ausführung eines Plattenfilters wird auf konstruktiv einfache Weise gewährleistet, daß beim Einschieben des Plattenfilters in ein ent­ sprechendes Gehäuse - insbesondere bei der Anwendung als Fahrgastraumfilter eines Kraftfahrzeuges - der Filter ohne Längenveränderung in Einschubrichtung auch gekrümmten Führungsbahnen folgt und seine gefor­ derte Abdichtung auf Anschlag erbringt, da durch die feste Verbindung der Falten mit dem Streifen, deren gleichmäßiger Abstand eingehalten und eine Block- oder Paketbildung der Falten sowie ein Ausknicken des Streifens senkrecht zur Plattenebene vermieden wird, so daß ausreichende Steifigkeit zum Erhalt der vorge­ gebenen Länge des an sich labilen Plattenfilters in Einschubrichtung gegeben ist.With such a design of a plate filter is guaranteed in a structurally simple manner, that when inserting the plate filter into an ent Talking housing - especially when using as a passenger compartment filter of a motor vehicle - the Filters without changing the length in the direction of insertion also follows curved guideways and its gefor provides the seal on the stop, because of the firm connection of the folds with the strip whose  even distance maintained and a block or the formation of a packet of folds and a buckling of the Strip perpendicular to the plate plane is avoided, so that sufficient rigidity to maintain the pre given length of the unstable plate filter in Direction of insertion is given.

Außerdem ist durch die Ausbildung des Streifens als Grifflasche eine gute Handhabung bei der Montage und Demontage des Plattenfilters gewährleistet.In addition, through the formation of the strip as Grip tab good handling during assembly and Disassembly of the plate filter guaranteed.

Claims (12)

1. Plattenfilter aus zick-zack-förmig gefaltetem Bahnenmaterial, der senkrecht zu den Faltlinien elastisch längenveränderbar und in diese Richtung mit zwei gegenüberliegenden Stirnkanten zur dich­ ten Abtrennung zweier Räume voneinander in ein Gehäuse einschiebbar ist, dadurch gekennzeichnet, daß auf einer der Plattenfilterseiten mindestens ein in Einschubrichtung über die gesamte Länge verlaufender, in seiner Länge unveränderbarer Streifen (14) an den Rücken (15) zumindest ein­ zelner Falten (16) angebunden ist, wobei das Ma­ terial des Streifens (14) und die Steifigkeit der Falten (16) in Richtung senkrecht zur Plattenebe­ ne derart sind, daß ein Ausknicken des Streifens (14) senkrecht zur Plattenebene nicht möglich ist.1. plate filter made of zigzag-folded sheet material that is adjustable in length perpendicular to the fold lines and can be inserted in this direction with two opposite end edges for separating two spaces from one another into a housing, characterized in that at least one on one of the plate filter sides in the direction of insertion over the entire length of the strip ( 14 ), whose length cannot be changed, is connected to the back ( 15 ) at least one individual fold ( 16 ), the material of the strip ( 14 ) and the rigidity of the folds ( 16 ) in Direction perpendicular to the Plattenebe ne are such that a buckling of the strip ( 14 ) perpendicular to the plane of the plate is not possible. 2. Plattenfilter nach Anspruch 1, dadurch gekennzeichnet, daß der Streifen (14) biegsam ist.2. Plate filter according to claim 1, characterized in that the strip ( 14 ) is flexible. 3. Plattenfilter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Streifen (14) auf seiner dem Bahnenmate­ rial (2) zugewandten Seite (17) beschichtet ist. 3. Plate filter according to claim 1 or 2, characterized in that the strip ( 14 ) on its the sheet material rial ( 2 ) facing side ( 17 ) is coated. 4. Plattenfilter nach Anspruch 3, dadurch gekennzeichnet, daß die Schicht (17) mit den Rücken (15) der Fal­ ten (16) fest verbindbar ist.4. Plate filter according to claim 3, characterized in that the layer ( 17 ) with the back ( 15 ) of the fold ten ( 16 ) is firmly connectable. 5. Plattenfilter nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die Schicht (17) eine Hotmelt-Schicht ist.5. Plate filter according to claim 3 or 4, characterized in that the layer ( 17 ) is a hot melt layer. 6. Plattenfilter nach einem der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß der Streifen (14) als Griffflasche ausgebildet ist.6. Plate filter according to one of the preceding claims, characterized in that the strip ( 14 ) is designed as a handle bottle. 7. Plattenfilter nach Anspruch 6, dadurch gekennzeichnet, daß das eine in Richtung des Bahnenmaterials (2) abgebogene Ende (19) des Streifens (14) in die eine Endfalte (13) des Plattenfilters (1) und am gegenüberliegenden Ende des Plattenfilters (1) eine in Richtung des Bahnenmaterials (2) weisende Sicke (20) in eine Filterfalte (21) eingreift.7. Plate filter according to claim 6, characterized in that the one in the direction of the web material ( 2 ) bent end ( 19 ) of the strip ( 14 ) in one end fold ( 13 ) of the plate filter ( 1 ) and at the opposite end of the plate filter ( 1 ) a bead ( 20 ) pointing in the direction of the web material ( 2 ) engages in a filter fold ( 21 ). 8. Plattenfilter nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß das dem abgebogenen Ende (19) gegenüberlie­ gende Ende des Streifens (14) als Griff (18) aus­ gebildet ist. 8. Plate filter according to claim 6 or 7, characterized in that the bent end ( 19 ) opposite end of the strip ( 14 ) is formed as a handle ( 18 ). 9. Plattenfilter nach einer der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß die beiden gegenüberliegenden Endfalten (13, 21) mit einer Verstärkung (11, 12) versehen sind.9. Plate filter according to one of the preceding claims, characterized in that the two opposite end pleats ( 13 , 21 ) are provided with a reinforcement ( 11 , 12 ). 10. Plattenfilter nach einem der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß zur Abdichtung der Plattenfilter (1) mit Schaumstoff (6, 8) eingefaßt ist.10. Plate filter according to one of the preceding claims, characterized in that for sealing the plate filter ( 1 ) with foam ( 6 , 8 ) is bordered. 11. Plattenfilter nach einem der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß die dem Griff (18) zugewandte Dichtung (8) an der Verstärkung (11) befestigt ist.11. Plate filter according to one of the preceding claims, characterized in that the handle ( 18 ) facing seal ( 8 ) is attached to the reinforcement ( 11 ). 12. Plattenfilter nach einem der vorhergehenden An­ sprüche, dadurch gekennzeichnet, daß der Streifen (14) aus einer Aluminiumfolie besteht.12. Plate filter according to one of the preceding claims, characterized in that the strip ( 14 ) consists of an aluminum foil.
DE4117550A 1991-05-29 1991-05-29 Plate filter made of zigzag folded sheet material Expired - Fee Related DE4117550C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4117550A DE4117550C2 (en) 1991-05-29 1991-05-29 Plate filter made of zigzag folded sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4117550A DE4117550C2 (en) 1991-05-29 1991-05-29 Plate filter made of zigzag folded sheet material

Publications (2)

Publication Number Publication Date
DE4117550A1 true DE4117550A1 (en) 1992-12-03
DE4117550C2 DE4117550C2 (en) 1997-06-12

Family

ID=6432698

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4117550A Expired - Fee Related DE4117550C2 (en) 1991-05-29 1991-05-29 Plate filter made of zigzag folded sheet material

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DE (1) DE4117550C2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323523A1 (en) * 1993-07-14 1995-01-19 Knecht Filterwerke Gmbh Filter element made of filter web material folded in a zigzag shape
DE4323522A1 (en) * 1993-07-14 1995-01-19 Knecht Filterwerke Gmbh Filter element made of filter web material folded in a zigzag shape
DE4343910A1 (en) * 1993-12-22 1995-06-29 Knecht Filterwerke Gmbh Flat plate filter
DE29616644U1 (en) * 1996-09-25 1996-12-12 Helsa-Werke Helmut Sandler GmbH & Co. KG, 95482 Gefrees Interchangeable filter cassette for air filters
DE19809375A1 (en) * 1998-03-05 1999-09-09 Behr Gmbh & Co Filter for vehicle ventilation system
DE19819980A1 (en) * 1998-05-05 1999-11-18 Herbert Huettlin Filters for dedusting process air containing a particulate material in a process apparatus and such process apparatus
DE10124504A1 (en) * 2001-05-19 2002-11-21 Behr Gmbh & Co Filter for ventilation unit has ay least two overlapping groups of folds with different fold periods
FR2852862A1 (en) * 2003-03-27 2004-10-01 Valeo Materiaux Friction Air filtering device for use in vehicles air circulating setup, has frame rigidifying unit delimited by two edges and deformed between rectilinear configuration and curved configuration permitted by rippled form of one edge
CN102805975A (en) * 2012-07-26 2012-12-05 苏州柏德纳科技有限公司 Filter plate
IT202200001976A1 (en) * 2022-02-04 2023-08-04 Denso Thermal Systems Spa Filter element with extraction handle

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DE7039913U (en) * 1970-10-29 1971-03-25 Gebr Trox Gmbh FOLDED FILTER
DE2137309A1 (en) * 1971-07-26 1973-02-08 Purolator Filter Gmbh FILTER MADE FROM A STRIP OF ZIGZAG FOLDED PAPER
DE8504843U1 (en) * 1985-02-21 1985-10-17 Sartorius GmbH, 3400 Göttingen Flat filter element for the filtration of fluids
US4547950A (en) * 1984-05-29 1985-10-22 Honeywell Inc. Method of spacing the folds of a folded filter media
US4744902A (en) * 1982-08-04 1988-05-17 Nippondenso Co., Ltd. Annular wave filter device
EP0383525A1 (en) * 1989-02-15 1990-08-22 Pall Corporation Filter device
DE4002078C1 (en) * 1990-01-25 1991-05-02 Fa. Carl Freudenberg, 6940 Weinheim, De
DE4010732A1 (en) * 1990-04-03 1991-10-10 Knecht Filterwerke Gmbh FILTER ELEMENT MADE OF A ZIGZAG FOLDED, RING OR PLATE FILTER MATERIAL
DE4039288A1 (en) * 1990-12-08 1992-06-11 Knecht Filterwerke Gmbh Gas filter insert of pleated filter fabric - has pleat edges splayed to increase contact area for attachment to edge sealing strip

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7039913U (en) * 1970-10-29 1971-03-25 Gebr Trox Gmbh FOLDED FILTER
DE2137309A1 (en) * 1971-07-26 1973-02-08 Purolator Filter Gmbh FILTER MADE FROM A STRIP OF ZIGZAG FOLDED PAPER
US4744902A (en) * 1982-08-04 1988-05-17 Nippondenso Co., Ltd. Annular wave filter device
US4547950A (en) * 1984-05-29 1985-10-22 Honeywell Inc. Method of spacing the folds of a folded filter media
DE8504843U1 (en) * 1985-02-21 1985-10-17 Sartorius GmbH, 3400 Göttingen Flat filter element for the filtration of fluids
EP0383525A1 (en) * 1989-02-15 1990-08-22 Pall Corporation Filter device
DE4002078C1 (en) * 1990-01-25 1991-05-02 Fa. Carl Freudenberg, 6940 Weinheim, De
DE4010732A1 (en) * 1990-04-03 1991-10-10 Knecht Filterwerke Gmbh FILTER ELEMENT MADE OF A ZIGZAG FOLDED, RING OR PLATE FILTER MATERIAL
DE4039288A1 (en) * 1990-12-08 1992-06-11 Knecht Filterwerke Gmbh Gas filter insert of pleated filter fabric - has pleat edges splayed to increase contact area for attachment to edge sealing strip

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4323523A1 (en) * 1993-07-14 1995-01-19 Knecht Filterwerke Gmbh Filter element made of filter web material folded in a zigzag shape
DE4323522A1 (en) * 1993-07-14 1995-01-19 Knecht Filterwerke Gmbh Filter element made of filter web material folded in a zigzag shape
DE4343910A1 (en) * 1993-12-22 1995-06-29 Knecht Filterwerke Gmbh Flat plate filter
DE29616644U1 (en) * 1996-09-25 1996-12-12 Helsa-Werke Helmut Sandler GmbH & Co. KG, 95482 Gefrees Interchangeable filter cassette for air filters
DE19809375A1 (en) * 1998-03-05 1999-09-09 Behr Gmbh & Co Filter for vehicle ventilation system
DE19809375B4 (en) * 1998-03-05 2006-02-16 Behr Gmbh & Co. Kg Replaceable filter
US6358290B1 (en) 1998-05-05 2002-03-19 Huettlin H.C. Herbert Processing apparatus with filter
DE19819980B4 (en) * 1998-05-05 2004-02-05 Hüttlin, Herbert Filter device for a process apparatus
DE19819980A1 (en) * 1998-05-05 1999-11-18 Herbert Huettlin Filters for dedusting process air containing a particulate material in a process apparatus and such process apparatus
DE10124504A1 (en) * 2001-05-19 2002-11-21 Behr Gmbh & Co Filter for ventilation unit has ay least two overlapping groups of folds with different fold periods
DE10124504B4 (en) * 2001-05-19 2017-07-06 Mahle International Gmbh Filter, in particular for a ventilation system of a motor vehicle
FR2852862A1 (en) * 2003-03-27 2004-10-01 Valeo Materiaux Friction Air filtering device for use in vehicles air circulating setup, has frame rigidifying unit delimited by two edges and deformed between rectilinear configuration and curved configuration permitted by rippled form of one edge
CN102805975A (en) * 2012-07-26 2012-12-05 苏州柏德纳科技有限公司 Filter plate
IT202200001976A1 (en) * 2022-02-04 2023-08-04 Denso Thermal Systems Spa Filter element with extraction handle
EP4223389A1 (en) * 2022-02-04 2023-08-09 DENSO THERMAL SYSTEMS S.p.A. Filtering element with extraction handle

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Owner name: MAHLE FILTERSYSTEME GMBH, 70376 STUTTGART, DE

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