DE4323523A1 - Filter element made of filter web material folded in a zigzag shape - Google Patents

Filter element made of filter web material folded in a zigzag shape

Info

Publication number
DE4323523A1
DE4323523A1 DE4323523A DE4323523A DE4323523A1 DE 4323523 A1 DE4323523 A1 DE 4323523A1 DE 4323523 A DE4323523 A DE 4323523A DE 4323523 A DE4323523 A DE 4323523A DE 4323523 A1 DE4323523 A1 DE 4323523A1
Authority
DE
Germany
Prior art keywords
filter
frame parts
filter element
element according
web material
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.)
Withdrawn
Application number
DE4323523A
Other languages
German (de)
Inventor
Horst Schneider
Hans 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 DE4323523A priority Critical patent/DE4323523A1/en
Publication of DE4323523A1 publication Critical patent/DE4323523A1/en
Withdrawn legal-status Critical Current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
    • B01D29/012—Making filtering elements
    • 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
    • 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
    • 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
    • B60H3/0658—Filter elements specially adapted for their arrangement in vehicles

Landscapes

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

Abstract

In a filter element which can be inserted into a filter housing so as to seal and which is made of a filter web material arranged in a plate shape folded in a zigzag shape having a frame covering the longitudinal and transverse edges so as to seal, fabrication is to be simplified. The solution comprises plastic L-shaped frame parts being arranged along the two longitudinal edges of the folded filter web material, the longer arms of which frame parts laterally cover the end regions of the folded filter web material and the shorter arms thereof lying on these end regions and the frame parts being joined to the filter web material by welding, the same L-shaped frame parts being arranged on the transverse edges and being joined by welding to at least a last fold of the filter web material, and the longer arms being coated on both sides with foamed material adhesive on one side as sealing material.

Description

Die Erfindung bezieht sich auf ein dichtend in ein Fil­ tergehäuse einsetzbares Filterelement aus einem zick­ zack-förmig gefalteten, plattenförmig angeordneten Fil­ terbahnmaterial mit die längs- und Querkanten dichtend abdeckendem Rahmen.The invention relates to a sealing in a fil filter housing insert made of a zig zig-zag-shaped, plate-shaped fil sheet material with the longitudinal and transverse edges sealing covering frame.

Solche Filterelemente binden insbesondere für Gasfilter, vorzugsweise für Fahrgastinnenraumluftfilter von Kraft­ fahrzeugen, Verwendung und sind in verschiedenen Ausfüh­ rungsformen bekannt, beispielsweise aus den DE-OSen 40 10 732 und 40 39 288. Nachteilig an diesen bekannten Ausführungsformen ist insbesondere, daß die Herstellung verhältnismäßig kompliziert und teuer ist, was besondere durch die Notwendigkeit des Aufschmelzens und/oder des Stauchens der Endbereiche des Filterbahnmaterials bedingt ist.Such filter elements bind especially for gas filters, preferably for Kraft passenger cabin air filters vehicles, use and are in different designs tion forms known, for example from the DE-OSen 40 10 732 and 40 39 288. A disadvantage of these known Embodiments is particularly that the manufacture is relatively complicated and expensive, which is special due to the need for melting and / or Compression of the end regions of the filter sheet material is.

Ziel der Erfindung ist es, eine fertigungsgerechtere Aus­ führung eines Filterelements der eingangs genannten Art anzugeben.The aim of the invention is to make it more suitable for production management of a filter element of the type mentioned specify.

Bei einem solchen Filterelement besteht die Erfindung da­ rin, daß entlang beider Längskanten des gefalteten Fil­ terbahnmaterials aus Kunststoff bestehende, L-förmige Rahmenteile, deren längere Schenkel die Endbereiche des gefalteten Filterbahnmaterials seitlich abdecken und de­ ren kürzere Schenkel auf diesen Endbereichen aufliegen und mit dem Filterbahnmaterial durch Schweißung verbunden sind, angeordnet sind, daß an den Querkanten eben solche, L-förmige Rahmenteile angeordnet und deren kürzere Schen­ kel mit mindestens einer letzten Falte des Filterbahnma­ terials durch Schweißung verbunden sind, und daß die län­ geren Schenkel beidseitig mit einseitig klebendem Schaum­ stoff als Lichtmaterial beschichtet sind.With such a filter element, the invention exists rin that along both longitudinal edges of the folded fil L-shaped plastic sheet material Frame parts, the longer legs of which are the end regions of the cover folded filter web material on the side and de Ren shorter legs rest on these end areas and connected to the filter sheet material by welding are arranged so that precisely those L-shaped frame parts arranged and their shorter legs with at least one last fold of the filter web terials are connected by welding, and that the län lower leg with foam on one side are coated as light material.

Dabei kann das Dichtmaterial im Bereich der Längskanten gegen die Endbereiche des gefalteten Filterbahnmaterials und im Bereich der Querkanten gegen die letzte Falte des Filterbahnmaterials gepreßt werden. The sealing material can be in the area of the longitudinal edges against the end areas of the pleated filter sheet material and in the area of the transverse edges against the last fold of the Filter web material are pressed.  

Die beidseitige Beschichtung der längeren Schenkel der L-förmigen Rahmenteile kann vorteilhafterweise aus einem um die längeren Schenkel an deren freier Kante herumge­ führten Streifen aus Dichtmaterial entsprechend größerer Breite bestehen.The double-sided coating of the longer legs of the L-shaped frame parts can advantageously be made from one around the longer legs on their free edge led strips of sealing material correspondingly larger Width exist.

Ferner können sich an die kürzeren Schenkel der Rahmen­ teile in der von dem Filterbahnmaterial abgewandten Rich­ tung weisende, leistenförmige Verbreiterungen anschließen, die einer Verbesserung der Lagefixierung des Filterele­ ments in dem Filtergehäuse und einer Erhöhung der Steifig­ keit des Filterelements dienen können.Furthermore, the shorter legs of the frame parts in the Rich facing away from the filter web material connect widened, strip-like extensions, an improvement in the fixation of the Filterele elements in the filter housing and an increase in rigidity speed of the filter element can serve.

Die Fertigung des Filterelements kann dadurch weiter ver­ einfacht werden, daß die an den Längs- und Querkanten an­ geordneten Rahmenteile durch Schweißung miteinander ver­ bunden oder aus einem Abschnitt eines fortlaufenden, als Meterware vorliegenden, L-förmigen Rahmenmaterials gebil­ det oder gemeinsam einstückig als Fertigteil, z. B. Fertig­ spritzteil hergestellt sind.The manufacture of the filter element can thereby further ver be simplified that at the longitudinal and transverse edges ordered frame parts ver by welding tied or from a section of a continuous, as Fabric by the meter, L-shaped frame material gebil det or together in one piece as a finished part, for. B. Done molded part are made.

Ferner können an Rahmenteilen durch Schweißung Handha­ bungslaschen befestigt sein, die das Einsetzen/Heraus­ nehmen des Filterelements in das/aus dem Filtergehäuse erleichtern.Furthermore, handle parts can be welded to frame parts Exercise tabs to be attached, the insertion / removal take the filter element into / out of the filter housing facilitate.

Eine besonders steife Ausführung des Filterelements läßt sich dadurch erreichen, daß die L-förmigen Rahmenteile im Übergangsbereich zwischen dem längeren und dem kürzeren Schenkel eine sich über die Länge der Rahmenteile erstrec­ kende, wulstförmige Verdickung aufweisen.A particularly rigid design of the filter element leaves achieve in that the L-shaped frame parts in Transitional area between the longer and the shorter Legs stretch over the length of the frame parts kend, bead-shaped thickening.

Vorteilhafterweise kann das Filterbahnmaterial aus schmelzbarem Kunststoff bestehen.The filter web material can advantageously be made of meltable plastic.

In der Zeichnung ist ein Ausführungsbeispiel eines Filter­ elements nach der Erfindung dargestellt, und zwar zeigtIn the drawing is an embodiment of a filter elements shown according to the invention, and shows

Fig. 1 eine perspektivische Ansicht, Fig. 1 is a perspective view,

Fig. 2 einen Schnitt nach der Linie II-II in Fig. 1, Fig. 2 shows a section along the line II-II in Fig. 1,

Fig. 3 einen Schnitt nach der Linie III-III in Fig. 1, Fig. 3 is a section along the line III-III in Fig. 1,

Fig. 4 einen Querschnitt eines abgewandelten Pro­ fils eines L-förmigen Rahmenteils an der Längskante, Fig. 4 shows a cross section of a modified Pro fils an L-shaped frame part at the longitudinal edge,

Fig. 5 einen Ausschnitt eines Schnittes entspre­ chend Fig. 3 in abgewandelter Ausführung und ergänzter Darstellung,. Fig. 5 shows a detail of a section accordingly Fig. 3 in a modified version and supplemented representation.

Zick-zack-förmig gefaltetes Filterbahnmaterial 1 ist in einem Rahmen aufgenommen, der aus entlang beider Längs­ kanten verlaufenden, L-förmigen Rahmenteilen 2 und ent­ lang beider Querkanten verlaufenden, L-förmigen Rahmen­ teilen 3 besteht. Die längeren Schenkel der Rahmenteile 2, 3 sind beidseitig mit einseitig klebendem Schaumstoff 4 als Dichtmaterial beschichtet. Die an den Querkanten angeordneten Rahmenteile 3 sind mit parallel zu deren kürzeren Schenkeln an diesen angebrachten, leistenförmi­ gen Verbreiterungen 5 versehen, die in die von dem Fil­ terbahnmaterial 1 abgewandte Richtung weisen.Zigzag-folded filter web material 1 is accommodated in a frame, which consists of parts running along both longitudinal edges, L-shaped frame parts 2 and ent along both transverse edges, L-shaped frame 3 . The longer legs of the frame parts 2 , 3 are coated on both sides with one-sided adhesive foam 4 as a sealing material. The frame parts 3 arranged on the transverse edges are provided with parallel to their shorter legs attached to these, strip-shaped extensions 5 which point in the direction facing away from the sheet material 1 .

Ein abgewandeltes Profil eines L-förmigen Rahmenteile 2 an einer Längskante (Fig. 4) weist im Übergangsbe­ reich zwischen dem längeren und dem kürzeren Schenkel eine sich über die Länge des Rahmenteils 2 erstrecken­ de, wulstförmige Verdickung 6 zur Stabilitätsverbesserung auf.A modified profile of an L-shaped frame part 2 on a longitudinal edge ( Fig. 4) has in the transition area between the longer and the shorter leg extending over the length of the frame part 2 de, bulge-shaped thickening 6 to improve stability.

Bei einer abgewandelten Ausführung eines L-förmigen Rah­ menteils 3 an einer Querkante (Fig. 5) liegt die lei­ stenförmige Verbreiterung 5 in der Ebene des kürzeren Schenkels des Rahmenteils 3 und ist einstückig mit dem Rahmenteil 3 in der Form eines T-förmigen Profils herge­ stellt. Die Verbreiterung 5 liegt, wenn das Filterele­ ment in ein Filtergehäuse 7 eingesetzt ist, auf dem obe­ ren Rand des Filtergehäuses 7 auf.In a modified version of an L-shaped frame member 3 on a transverse edge ( FIG. 5), the lei-shaped widening 5 lies in the plane of the shorter leg of the frame part 3 and is integral with the frame part 3 in the form of a T-shaped profile poses. The widening 5 lies when the Filterele element is inserted into a filter housing 7 , on the upper edge of the filter housing 7 .

Claims (9)

1. Dichtend in ein Filtergehäuse einsetzbares Filterele­ ment aus einem zick-zack-förmig gefalteten, platten­ förmig angeordneten Filterbahnmaterial mit die Längs- und Querkanten dichtend abdeckendem Rahmen, dadurch gekennzeichnet, daß entlang beider Längskanten des ge­ falteten Filterbahnmaterials (1) aus Kunststoff be­ stehende, L-förmige Rahmenteile (2), deren längere Schenkel die Endbereiche des gefalteten Filterbahnma­ terials (1) seitlich abdecken und deren kürzere Schenkel auf diesen Endbereichen aufliegen und mit dem Filterbahnmaterial (1), durch Schweißung verbunden sind, angeordnet sind, daß an den Querkanten eben sol­ che, L-förmige Rahmenteile (3) angeordnet und deren kürzere Schenkel mit mindestens einer letzten Falte des Filterbahnmaterials (1) durch Schweißung verbun­ den sind, und daß die längeren Schenkel beidseitig mit einseitig klebendem Schaumstoff (4) als Dichtmaterial beschichtet sind.1. Sealing in a filter housing insertable Filterele element made of a zigzag-folded, plate-shaped filter sheet material with the longitudinal and transverse edges sealingly covering frame, characterized in that along both longitudinal edges of the folded filter sheet material ( 1 ) made of plastic be standing , L-shaped frame parts ( 2 ), whose longer legs laterally cover the end regions of the folded Filterbahnma materials ( 1 ) and whose shorter legs rest on these end regions and are connected to the filter web material ( 1 ) by welding, that are arranged on the Transverse edges just sol che, L-shaped frame parts ( 3 ) arranged and the shorter legs with at least one last fold of the filter sheet material ( 1 ) are verbun by welding, and that the longer legs are coated on both sides with one-sided adhesive foam ( 4 ) as a sealing material . 2. Filterelement nach Anspruch 1, dadurch gekennzeichnet, daß die beidseitige Beschichtung der längeren Schenkel der L-förmigen Rahmenteile (2, 3) aus einem um die längeren Schenkel an deren freier Kante herumgeführten Streifen aus Schaumstoff (4) als Dichtmaterial ent­ sprechend größerer Breite besteht.2. Filter element according to claim 1, characterized in that the double-sided coating of the longer legs of the L-shaped frame parts ( 2 , 3 ) from a around the longer legs around the free edge of the strip of foam ( 4 ) as a sealing material accordingly larger width consists. 3. Filterelement nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, daß sich an die kürzeren Schenkel der Rahmen­ teile (2, 3) in der von dem Filterbahnmaterial (1) abgewandten Richtung weisende, leistenförmige Verbrei­ terungen (5) anschließen.3. Filter element according to claim 1 or 2, characterized in that the shorter legs of the frame parts ( 2 , 3 ) in the direction facing away from the filter web material ( 1 ) facing, strip-shaped extensions ( 5 ). 4. Filterelement nach Anspruch 1, 2 oder 3, dadurch ge­ kennzeichnet, daß die an den Längs- und Querkanten an­ geordneten Rahmenteile (2, 3) durch Schweißung mit­ einander verbunden sind.4. Filter element according to claim 1, 2 or 3, characterized in that on the longitudinal and transverse edges of the ordered frame parts ( 2 , 3 ) are connected to each other by welding. 5. Filterelement nach Anspruch 1, 2 oder 3, dadurch ge­ kennzeichnet, daß die an den Längs- und Querkanten an­ geordneten Rahmenteile (2, 3) aus einem Abschnitt eines fortlaufenden, als Meterware vorliegenden, L-för­ migen Rahmenmaterials gebildet sind. 5. Filter element according to claim 1, 2 or 3, characterized in that the on the longitudinal and transverse edges of the ordered frame parts ( 2 , 3 ) are formed from a portion of a continuous, available by the meter, L-shaped frame material. 6. Filterelement nach Anspruch 1, 2 oder 3, dadurch ge­ kennzeichnet, daß die an den Längs- und Querkanten an­ geordneten Rahmenteile (2, 3) gemeinsam einstückig als Fertigteil, z. B. Fertigspritzteil, hergestellt sind.6. Filter element according to claim 1, 2 or 3, characterized in that on the longitudinal and transverse edges of the ordered frame parts ( 2 , 3 ) together in one piece as a finished part, for. B. finished molded part are made. 7. Filterelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß an Rahmenteilen (2, 3) Handhabungslaschen durch Schweißung befestigt sind.7. Filter element according to one of the preceding claims, characterized in that handling straps are attached to frame parts ( 2 , 3 ) by welding. 8. Filterelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die L-förmigen Rahmentei­ le (2, 3) im Übergangsbereich zwischen dem längeren und dem kürzeren Schenkel eine sich über die Länge der Rahmenteile (2, 3) erstreckende, wulstförmige Ver­ dickung (6) aufweisen.8. Filter element according to one of the preceding claims, characterized in that the L-shaped Rahmentei le ( 2 , 3 ) in the transition region between the longer and the shorter leg an over the length of the frame parts ( 2 , 3 ) extending, bulging Ver thickening ( 6 ). 9. Filterelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Filterbahnmaterial (1) aus schmelzbarem Kunststoff besteht.9. Filter element according to one of the preceding claims, characterized in that the filter web material ( 1 ) consists of meltable plastic.
DE4323523A 1993-07-14 1993-07-14 Filter element made of filter web material folded in a zigzag shape Withdrawn DE4323523A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4323523A DE4323523A1 (en) 1993-07-14 1993-07-14 Filter element made of filter web material folded in a zigzag shape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4323523A DE4323523A1 (en) 1993-07-14 1993-07-14 Filter element made of filter web material folded in a zigzag shape

Publications (1)

Publication Number Publication Date
DE4323523A1 true DE4323523A1 (en) 1995-01-19

Family

ID=6492754

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4323523A Withdrawn DE4323523A1 (en) 1993-07-14 1993-07-14 Filter element made of filter web material folded in a zigzag shape

Country Status (1)

Country Link
DE (1) DE4323523A1 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430333A1 (en) * 1994-08-29 1996-03-07 Mann & Hummel Filter filter
DE19512678C1 (en) * 1995-04-07 1996-11-21 Freudenberg Carl Fa Filter insert comprising folded pack with sealing and reinforcing tabs
US5667545A (en) * 1995-07-03 1997-09-16 Toyoda Boshoku Corporation Filter element for air cleaner and method of manufacturing the same
US5792228A (en) * 1995-12-02 1998-08-11 Firma Carl Fruedenberg Accordion filter pack that is bendable in only one direction
US5792229A (en) * 1994-07-07 1998-08-11 Nippondenso Co., Ltd. Filter and filtering apparatus
DE19739014A1 (en) * 1997-09-06 1999-03-11 Knecht Filterwerke Gmbh Filter device
EP0904822A2 (en) * 1997-09-25 1999-03-31 Firma Carl Freudenberg Filter element
DE19809375A1 (en) * 1998-03-05 1999-09-09 Behr Gmbh & Co Filter for vehicle ventilation system
DE10241748A1 (en) * 2002-09-10 2004-03-18 Helsa-Werke Helmut Sandler Gmbh & Co. Kg Filter element, e.g. for air conditioner, comprises zigzag-shaped filter pack and stiffening element which runs parallel to filter pack end face
DE102005062209A1 (en) * 2005-12-24 2007-07-05 Mahle International Gmbh Plate-like filter insert for gas filter comprises filter material formed as folded strip material with front folds closed by sealing strip
DE102009016739A1 (en) * 2009-04-09 2010-10-14 Carl Freudenberg Kg Filter housing for a fuel cell
DE102011101799A1 (en) * 2010-05-26 2011-12-01 Mann + Hummel Gmbh Filter holder for filter element utilized as interior space filter in filter device for automobile, has support surface with ramp region formed such that leg of bracket is pushed away during insertion of filter element from ramp region
DE102015011339B4 (en) * 2014-09-24 2021-03-18 Mann+Hummel Gmbh Filter element with a circumferential seal and process for its manufacture

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2252724A (en) * 1937-03-31 1941-08-19 Owens Corning Fiberglass Corp Air filter
DE1961542A1 (en) * 1969-12-08 1971-07-22 Gilbert Schwartzmann Fluid applicator
DE1776236B2 (en) * 1968-09-28 1976-04-15 Ausscheidung aus: 17 82 666 RECTANGULAR FILTER INSERT FOR GAS FILTER
SU719673A1 (en) * 1978-07-10 1980-03-05 Предприятие П/Я М-5073 Air filter
DE3110131A1 (en) * 1981-03-16 1982-12-30 Rainer 5820 Gevelsberg Schulz Filter for air and gas purification
DE3816434A1 (en) * 1987-05-16 1988-11-24 Sartorius Gmbh Filter module of sheet filter elements
EP0450299A1 (en) * 1990-04-03 1991-10-09 Knecht Filterwerke Gmbh Filtering element with folded material in ring or flat disposition
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
DE4117550A1 (en) * 1991-05-29 1992-12-03 Knecht Filterwerke Gmbh Plate filter insert - has concertina-folded sheet material where outer edges are held in place against frame to prevent leakage of unfiltered air
DE4215260A1 (en) * 1992-05-09 1993-11-18 Hengst Walter Gmbh & Co Kg Fan-folded air filter - strengthened by strip foam edges which absorb glue

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2252724A (en) * 1937-03-31 1941-08-19 Owens Corning Fiberglass Corp Air filter
DE1776236B2 (en) * 1968-09-28 1976-04-15 Ausscheidung aus: 17 82 666 RECTANGULAR FILTER INSERT FOR GAS FILTER
DE1961542A1 (en) * 1969-12-08 1971-07-22 Gilbert Schwartzmann Fluid applicator
SU719673A1 (en) * 1978-07-10 1980-03-05 Предприятие П/Я М-5073 Air filter
DE3110131A1 (en) * 1981-03-16 1982-12-30 Rainer 5820 Gevelsberg Schulz Filter for air and gas purification
DE3816434A1 (en) * 1987-05-16 1988-11-24 Sartorius Gmbh Filter module of sheet filter elements
EP0450299A1 (en) * 1990-04-03 1991-10-09 Knecht Filterwerke Gmbh Filtering element with folded material in ring or flat disposition
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
DE4117550A1 (en) * 1991-05-29 1992-12-03 Knecht Filterwerke Gmbh Plate filter insert - has concertina-folded sheet material where outer edges are held in place against frame to prevent leakage of unfiltered air
DE4215260A1 (en) * 1992-05-09 1993-11-18 Hengst Walter Gmbh & Co Kg Fan-folded air filter - strengthened by strip foam edges which absorb glue

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5792229A (en) * 1994-07-07 1998-08-11 Nippondenso Co., Ltd. Filter and filtering apparatus
DE4430333C2 (en) * 1994-08-29 2000-02-17 Mann & Hummel Filter filter
US5620505A (en) * 1994-08-29 1997-04-15 Filterwerk Mann & Hummel Gmbh Filter
DE4430333A1 (en) * 1994-08-29 1996-03-07 Mann & Hummel Filter filter
DE19512678C1 (en) * 1995-04-07 1996-11-21 Freudenberg Carl Fa Filter insert comprising folded pack with sealing and reinforcing tabs
US5667545A (en) * 1995-07-03 1997-09-16 Toyoda Boshoku Corporation Filter element for air cleaner and method of manufacturing the same
US5792228A (en) * 1995-12-02 1998-08-11 Firma Carl Fruedenberg Accordion filter pack that is bendable in only one direction
DE19739014A1 (en) * 1997-09-06 1999-03-11 Knecht Filterwerke Gmbh Filter device
EP0904822A2 (en) * 1997-09-25 1999-03-31 Firma Carl Freudenberg Filter element
EP0904822A3 (en) * 1997-09-25 1999-08-25 Firma Carl Freudenberg Filter element
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
DE10241748B4 (en) * 2002-09-10 2004-07-29 Helsa-Werke Helmut Sandler Gmbh & Co. Kg filter element
DE10241748A1 (en) * 2002-09-10 2004-03-18 Helsa-Werke Helmut Sandler Gmbh & Co. Kg Filter element, e.g. for air conditioner, comprises zigzag-shaped filter pack and stiffening element which runs parallel to filter pack end face
DE102005062209A1 (en) * 2005-12-24 2007-07-05 Mahle International Gmbh Plate-like filter insert for gas filter comprises filter material formed as folded strip material with front folds closed by sealing strip
US7896942B2 (en) 2005-12-24 2011-03-01 Mahle International Gmbh Plate-shaped filter insert
DE102009016739A1 (en) * 2009-04-09 2010-10-14 Carl Freudenberg Kg Filter housing for a fuel cell
DE102011101799A1 (en) * 2010-05-26 2011-12-01 Mann + Hummel Gmbh Filter holder for filter element utilized as interior space filter in filter device for automobile, has support surface with ramp region formed such that leg of bracket is pushed away during insertion of filter element from ramp region
DE102011101799B4 (en) * 2010-05-26 2015-06-18 Mann + Hummel Gmbh Filter holder for a filter element and filter device
DE102015011339B4 (en) * 2014-09-24 2021-03-18 Mann+Hummel Gmbh Filter element with a circumferential seal and process for its manufacture

Similar Documents

Publication Publication Date Title
DE4039288C2 (en) Filter insert for gas filters in particular
EP1134014B1 (en) Pleated filter
DE19545046C2 (en) Flexible pleated filter pack in one direction
DE19757423C1 (en) Filter insert
EP0715876B1 (en) Bag filter
DE4323523A1 (en) Filter element made of filter web material folded in a zigzag shape
EP3043883B1 (en) Air filter
DE4443676A1 (en) Dust filter assembly insert fan-fold edge for protecting insert against mechanical damage
DE102004005904A1 (en) Polygonal tubular, pleated, filter element e.g. for use in vehicle air-conditioning or combustion air systems, is formed of edge-linked panel sections
DE2719983A1 (en) GAS FILTER ELEMENT
DE10135690C2 (en) Filter insert for a filter housing
DE4323522A1 (en) Filter element made of filter web material folded in a zigzag shape
EP1968725B1 (en) Plate-shaped filter insert
DE19816238A1 (en) Stiffening strip for a filter element with zigzag folded filter sheet material
DE4117550C2 (en) Plate filter made of zigzag folded sheet material
DE102004054246A1 (en) Arrangement of a plate-shaped filter element in a gas filter housing
DE3622955A1 (en) Process for the production of an air filter
DE10241748B4 (en) filter element
DE10321068B4 (en) filter element
DE4344505A1 (en) Vehicle interior filter
WO2008119410A1 (en) Filter arrangement
DE1407868C3 (en) Pocket or bag filters for gaseous media
DE10235122B3 (en) Flexible filter
EP1011999A1 (en) Bellow for an automobile seat frame
DE4206407A1 (en) Pleated filter element esp. for air filter - has shape stabilised by spun web of adhesive filaments

Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: MAHLE FILTERSYSTEME GMBH, 70376 STUTTGART, DE

8141 Disposal/no request for examination