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DE3815145C1 - Filter body made of a zigzag-shaped pleated web - Google Patents

Filter body made of a zigzag-shaped pleated web

Info

Publication number
DE3815145C1
DE3815145C1 DE3815145A DE3815145A DE3815145C1 DE 3815145 C1 DE3815145 C1 DE 3815145C1 DE 3815145 A DE3815145 A DE 3815145A DE 3815145 A DE3815145 A DE 3815145A DE 3815145 C1 DE3815145 C1 DE 3815145C1
Authority
DE
Germany
Prior art keywords
beads
web
filter
intake
filter 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.)
Expired
Application number
DE3815145A
Other languages
German (de)
Inventor
Sigbert 7322 Donzdorf De Widmann
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.)
Knecht Filterwerke 7000 Stuttgart De GmbH
Original Assignee
Knecht Filterwerke 7000 Stuttgart De 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 Filterwerke 7000 Stuttgart De GmbH filed Critical Knecht Filterwerke 7000 Stuttgart De GmbH
Priority to DE3815145A priority Critical patent/DE3815145C1/en
Priority to US07/603,775 priority patent/US5080790A/en
Priority to EP89710035A priority patent/EP0341192A1/en
Priority to JP1504451A priority patent/JPH03505058A/en
Priority to PCT/DE1989/000277 priority patent/WO1989010781A1/en
Priority to EP89905067A priority patent/EP0415954A1/en
Application granted granted Critical
Publication of DE3815145C1 publication Critical patent/DE3815145C1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D29/016—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 with corrugated, folded or wound filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/04—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
    • B01D27/06—Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper with corrugated, folded or wound 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
    • B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—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
    • B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound 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
    • B01D29/11—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 bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B01D29/213—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets having a concertina shape

Landscapes

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

Abstract

In a filter body made of a zigzag-shaped pleated web of a relatively thin-walled filter material which has, both on the intake side and on the airflux side, between the pleat edges, longitudinal beads respectively projecting from the web plane for mutual spacing of the pleats and in which, between the beads of the same pleat surfaces, undeformed planar sections exist, the spacer function of the beads is to be improved with respect to prolonged operation. For this purpose, the beads are shaped in such a way that each intake bead (3) projecting from the filter material web on the intake side converts at its longitudinal sides into a respective airflux bead (4) projecting out of the other side of the filter material web, the identical heights of the airflux beads (4) being smaller than the identical heights of the intake beads (3) and that neighbouring webs lying one above the other each abut each other on the one side with their intake beads and on the other side with their airflux beads. <IMAGE>

Description

Die Erfindung betrifft einen Filterkörper aus einer zick-zack-förmig gefalteter Bahn eines relativ dünn­ wandigen Filtermaterials nach dem Oberbegriff des Pa­ tentanspruchs.The invention relates to a filter body from a zigzag folded web of a relatively thin wall filter material according to the generic term of Pa entitlement.

Ein derartig aufgebauter Filterkörper ist aus DE-PS 12 48 618 bekannt. Dort sind die Sicken so geformt, daß sich bei aufeinanderliegenden Filtermaterialbah­ nen an- und abströmseitig gleich geformte Strömungs­ räume ergeben. Dies ergibt sich bei jener bekannten Ausführung dadurch, daß jeweils eine zur Anströmseite herausragende Sicke mit ihrer Längsseite direkt an eine zur Abströmseite herausragende Nachbarsicke an­ grenzt. Bei aufeinanderliegenden Filterbahnen führt dies dazu, daß jeweils an einem Ende des Strömungs­ raumes von diesem Strömungsraum nach außen weisende Sicken den Abschluß bilden. Bei dem abströmseitigen Strömungskanal der von dem anströmenden Medium, ins­ besondere einer Flüssigkeit, unter Druck steht, kann es gerade an dieser Stelle leicht zu einem Zusammen­ fallen des Filterbahnmaterials kommen, wodurch der Abströmquerschnitt in unerwünschter Weise verkleinert wird.Such a filter body is from DE-PS 12 48 618 known. The beads are shaped there that with filter material lying on top of each other flow on the upstream and downstream sides spaces result. This results from that known Execution in that one to the upstream side outstanding bead with its long side directly on a neighboring bead protruding towards the outflow side borders. With filter tracks lying on top of each other this means that at each end of the flow space facing outward from this flow space Beads form the conclusion. In the downstream Flow channel of the inflowing medium, ins especially a liquid that is under pressure it is easy to merge at this point fall of the filter web material come, causing the Outflow cross section reduced in an undesirable manner becomes.

Hier eine Verbesserung zu erreichen, ist die Aufgabe der vorliegenden Erfindung.The task is to achieve an improvement here of the present invention.

Gelöst wird diese Aufgabe durch eine Ausbildung der Sicken und Koordination beim Aufeinanderlegen benach­ barter Filtermaterialbahnen nach den kennzeichnenden Merkmalen des Patentanspruchs.This task is solved by training the Beading and coordination when laying on top barter filter material sheets according to the characteristic Features of the claim.

Eine Filterbahn mit Sicken, wie sie zum Aufbau des erfindungsgemäßen Filterkörpers verwendet wird, ist an sich bereits aus DE-OS 19 22 976 bekannt. Nicht bekannt aus jener Schrift ist es jedoch, diese derart geformten Filterbahnen in der erfindungsgemäß vorge­ schlagenen Weise aufeinanderzulegen. Die Art der er­ findungsgemäßen Zuordnung benachbarter Filterbahnen ist jedoch zwingend erforderlich, um den angestrebten Effekt eines gegen ein Zusammenfallen seiner Filter­ schichten sicheren Filterkörpers zu erreichen.A filter track with beads, as used to build the filter body according to the invention is used already known from DE-OS 19 22 976. Not however, it is known from that scripture that it is so shaped filter sheets in the pre-invented striking manner. The kind of he assignment of adjacent filter tracks according to the invention is, however, imperative to achieve the desired Effect one against a collapse of its filters layers to achieve safe filter body.

Aus DE-OS 26 51 910 ist darüber hinaus eine gewellte Filterbahn bekannt, bei der periodisch über die Länge verteilt jeweils zwei benachbarte Wellenerhebungen zusammen die Form eines W bilden, dessen mittlerer Balken höher als die beiden Außenschenkel ausgebildet ist. Die höheren Mittelbalken der W-förmigen Wellen dienen ausschließlich dazu, aneinanderliegende Fil­ terbahnen nicht gleichzeitig an sämtlichen einzelnen Wellen abzustützen, sondern nur in größeren Abstän­ den, um dadurch die aktiven Filterbereiche des Bah­ nenmaterials nicht unnötig zu verkleinern. Aus dieser Formung einzelner Wellen läßt sich kein Hinweis auf eine Kombination mit den Merkmalen einer Filterbahn nach DE-PS 12 48 618 entnehmen, um dadurch die durch die erfindungsgemäße Lösung erzielbare Stabilitätser­ höhung einer in Zick-Zack-Falten gelegten Filterbahn erreichen zu können. Die erfindungsgemäß erzielbare Stabilität besteht dabei darin, daß die einzelnen Filterfalten auch bei hohen Druckunterschieden zwi­ schen An- und Abströmseite formstabil bleiben und nicht in Richtung Abströmseite zusammenfallen.DE-OS 26 51 910 is also a corrugated Filter path known, periodically over the length distributes two adjacent wave surveys together form the shape of a W, the middle one Beams higher than the two outer legs is. The higher central beams of the W-shaped waves are used only to lay adjacent fil not all at the same time Shafts supported, but only in larger distances to thereby filter the Bah not unnecessarily downsize. From this There is no indication of the formation of individual waves a combination with the characteristics of a filter web  according to DE-PS 12 48 618, to thereby the through the solution of the invention achievable stability elevation of a filter web laid in zigzag folds to be able to achieve. The achievable according to the invention Stability is that the individual Filter folds even with high pressure differences between between the upstream and downstream sides remain dimensionally stable and do not collapse towards the outflow side.

Ein Ausführungsbeispiel ist in der Zeichnung darge­ stellt. Es zeigenAn embodiment is shown in the drawing poses. Show it

Fig. 1 eine Draufsicht eines Teils einer Filtermaterialbahn Fig. 1 is a plan view of part of a filter material web

Fig. 2 einen Schnitt durch die Filter­ materialbahn nach Linie II-II in vergrößertem Maßstab, Fig. 2 shows a section through the filter material web according to line II-II on an enlarged scale,

Fig. 3 eine perspektivische Ansicht auf einen Ausschnitt einer zick-zack- förmig gefalteten Filterbahn, Fig. 3 is a perspective view of a detail of a zigzag-shaped folded filter web,

Fig. 4 eine Ansicht auf die Stirnseite eines zick-zack-förmig gefalteten Filterkörpers, Fig. 4 is a view on the front side of a zigzag-shaped folded filter body,

Fig. 5 einen Schnitt nach Linie V-V durch die Falten des Filterkörpers nach Fig. 4. Fig. 5 is a section along the line VV through the folds of the filter body according to Fig. 4.

Das Filterbahnmaterial 1 ist quer zu seiner Längser­ streckung mit einzelnen Faltlinien 2 versehen, um die das Bahnmaterial zick-zack-förmig aufgefaltet werden kann.The filter web material 1 is provided transversely to its longitudinal extension with individual folding lines 2 , around which the web material can be folded in a zigzag shape.

In das Bahnmaterial rechtwinklig zu den Faltlinien 2 eingeprägt sind einzelne Doppelsicken. Diese Doppel­ sicken bestehen aus einer in einem betriebsbereiten Filter auf der Anströmseite zu liegen kommenden An­ strömsicke 3 und zwei sich von den Flanken dieser Sicke 3 direkt auf die andere Seite der Filterbahn erstreckenden Abströmsicken 4.Individual double beads are embossed into the web material at right angles to the fold lines 2 . These double beads consist of a coming in a ready-to-use filter on the inflow side to flow bead 3 and two from the flanks of this bead 3 directly to the other side of the filter web extending outflow beads 4th

Die Anströmsicke 3 erstreckt sich weiter auf der Ma­ terialbahn senkrecht heraus als die beiden jeweils zugeordneten Abströmsicken 4.The inflow bead 3 extends further vertically out on the material web than the two respectively assigned outflow beads 4 .

In zick-zack-förmig gefaltetem Zustand der Filterma­ terialbahn 1 liegen anströmseitig jeweils die An­ strömsicken 3 zweier benachbarter Faltenabschnitte zusammen, während abströmseitig die Abstützung über die kleineren Abströmsicken 4 erfolgt.In the zigzag folded state of the filter material 1 , the inflow beads 3 are located on the upstream side of two adjacent fold sections, while the downstream side is supported by the smaller outflow beads 4 .

Die Anprdnung der Sicken 3 und 4 ermöglicht insbeson­ dere auf der Abströmseite eine über die Breite der Filterbahn symmetrische Abstützung der einzelnen Fil­ terbahnfaltenabschnitte. Dadurch kann bei Aufrechter­ haltung einer großen freien Filterfläche eine gegen Kollabieren der Filterbahnfaltenabschnitte äußerst sicheres Abstützen erreicht werden.The corrugation of the beads 3 and 4 enables in particular on the outflow side a symmetrical support of the individual filter fold sections over the width of the filter web. As a result, an extremely safe support against collapse of the filter web fold sections can be achieved while maintaining a large free filter area.

Claims (1)

Filterkörper aus einer zick-zack-förmig gefalteten Bahn eines relativ dünnwandigen Filtermaterials, das sowohl auf der Anströmseite als auch auf der Abström­ seite zwischen den Faltenkanten jeweils aus der Bahn­ ebene herausragende längliche Sicken zum gegenseiti­ gen Abstandhalten der Falten aufweist und bei dem zwischen den Sicken der gleichen Faltenfläche unver­ formte ebene Abschnitte bestehen, dadurch gekennzeichnet, daß jede anströmseitig aus der Filtermaterialbahn herausragende Anströmsicke (3) an ihrenn beiden Längsseiten in jeweils eine aus der anderen Seite der Filtermate­ rialbahn herausragende Abströmsicke (4) übergeht, wo­ bei die gleichen Höhen der Abströmsicken (4) kleiner als die gleichen Höhen der Anströmsicken (3) sind und daß benachbarte aufeinanderliegende Bahnen jeweils einerseits mit ihren Anström- und andererseits mit ihren Abströmsicken gegeneinanderstoßen.Filter body made of a zigzag-folded web of a relatively thin-walled filter material, which on both the inflow side and on the downstream side between the fold edges each have plane elongated beads for mutual spacing of the folds and between the beads the same pleat surface are undeformed flat sections, characterized in that each inflow bead ( 3 ) protruding from the inflow side of the filter material web merges at its two longitudinal sides into an outflow bead ( 4 ) protruding from the other side of the filter material web, where at the same heights the Outflow beads ( 4 ) are smaller than the same heights of the inflow beads ( 3 ) and that adjacent tracks lying one on top of the other collide with their inflow beads and with their outflow beads.
DE3815145A 1988-05-04 1988-05-04 Filter body made of a zigzag-shaped pleated web Expired DE3815145C1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE3815145A DE3815145C1 (en) 1988-05-04 1988-05-04 Filter body made of a zigzag-shaped pleated web
US07/603,775 US5080790A (en) 1988-05-04 1989-04-29 Strip-shaped filter material with crimps molded in and filter elements made of this material
EP89710035A EP0341192A1 (en) 1988-05-04 1989-04-29 Filter web with formed crimps and filter body using this material
JP1504451A JPH03505058A (en) 1988-05-04 1989-04-29 Band-shaped filter media with integrally molded corrugated portions and filter bodies made of this material
PCT/DE1989/000277 WO1989010781A1 (en) 1988-05-04 1989-04-29 Strips of filter material with moulded corrugations and filter bodies made of this material
EP89905067A EP0415954A1 (en) 1988-05-04 1989-04-29 Strips of filter material with moulded corrugations and filter bodies made of this material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3815145A DE3815145C1 (en) 1988-05-04 1988-05-04 Filter body made of a zigzag-shaped pleated web

Publications (1)

Publication Number Publication Date
DE3815145C1 true DE3815145C1 (en) 1989-10-05

Family

ID=6353588

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3815145A Expired DE3815145C1 (en) 1988-05-04 1988-05-04 Filter body made of a zigzag-shaped pleated web

Country Status (1)

Country Link
DE (1) DE3815145C1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208862A1 (en) * 1992-03-19 1993-09-23 Hengst Walter Gmbh & Co Kg Pleated filter element esp. for air filter - has adhesive layer on pleat side edges
EP1414540A2 (en) * 2000-09-21 2004-05-06 LPD Technologies, Inc. Fluid filter element
US6824581B1 (en) * 2001-05-01 2004-11-30 Dana Corporation Pleated filter media with embossed spacers and cross flow
EP1790406A2 (en) * 2005-11-22 2007-05-30 helsa-automotive GmbH & Co. KG Filter element and method of making
US7425227B1 (en) 2004-06-17 2008-09-16 Wix Filtration Corp Llc Pleated filter element with offset emboss pattern
US9084957B2 (en) 2008-07-25 2015-07-21 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US9433884B2 (en) 2007-06-26 2016-09-06 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US9517430B2 (en) 2007-02-02 2016-12-13 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
US9808752B2 (en) 2008-02-04 2017-11-07 Donaldson Company, Inc. Method and apparatus for forming fluted filtration media
US10058812B2 (en) 2010-01-25 2018-08-28 Donaldson Company, Inc. Pleated filtration media having tapered flutes
US10363513B2 (en) 2009-08-03 2019-07-30 Donaldson Company, Inc. Method and apparatus for forming fluted filtration media having tapered flutes
US11813561B2 (en) * 2014-11-10 2023-11-14 Donaldson Company, Inc. Filtration media, filter packs, and filter elements with protrusions

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922976A1 (en) * 1969-05-06 1970-11-19 Mann & Hummel Filter Filter insert for liquids, especially for the lubricating oil of Bronnkraftmaschinen
DE2651910A1 (en) * 1975-11-20 1977-06-08 Evans Adlard & Co DISPOSABLE FILTER ELEMENT

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1922976A1 (en) * 1969-05-06 1970-11-19 Mann & Hummel Filter Filter insert for liquids, especially for the lubricating oil of Bronnkraftmaschinen
DE2651910A1 (en) * 1975-11-20 1977-06-08 Evans Adlard & Co DISPOSABLE FILTER ELEMENT

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4208862A1 (en) * 1992-03-19 1993-09-23 Hengst Walter Gmbh & Co Kg Pleated filter element esp. for air filter - has adhesive layer on pleat side edges
EP1414540A2 (en) * 2000-09-21 2004-05-06 LPD Technologies, Inc. Fluid filter element
EP1414540A4 (en) * 2000-09-21 2004-10-13 Lpd Technologies Inc Fluid filter element
US6824581B1 (en) * 2001-05-01 2004-11-30 Dana Corporation Pleated filter media with embossed spacers and cross flow
US7425227B1 (en) 2004-06-17 2008-09-16 Wix Filtration Corp Llc Pleated filter element with offset emboss pattern
EP1790406A2 (en) * 2005-11-22 2007-05-30 helsa-automotive GmbH & Co. KG Filter element and method of making
EP1790406A3 (en) * 2005-11-22 2008-06-04 helsa-automotive GmbH & Co. KG Filter element and method of making
US10786774B2 (en) 2007-02-02 2020-09-29 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
US11612845B2 (en) 2007-02-02 2023-03-28 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
US9517430B2 (en) 2007-02-02 2016-12-13 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
US11298645B2 (en) 2007-06-26 2022-04-12 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US10525397B2 (en) 2007-06-26 2020-01-07 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US9433884B2 (en) 2007-06-26 2016-09-06 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US12017177B2 (en) 2007-06-26 2024-06-25 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US9808752B2 (en) 2008-02-04 2017-11-07 Donaldson Company, Inc. Method and apparatus for forming fluted filtration media
US9855519B2 (en) 2008-07-25 2018-01-02 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US9084957B2 (en) 2008-07-25 2015-07-21 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US10946313B2 (en) 2008-07-25 2021-03-16 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US12048888B2 (en) 2008-07-25 2024-07-30 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US10363513B2 (en) 2009-08-03 2019-07-30 Donaldson Company, Inc. Method and apparatus for forming fluted filtration media having tapered flutes
US10058812B2 (en) 2010-01-25 2018-08-28 Donaldson Company, Inc. Pleated filtration media having tapered flutes
US11413563B2 (en) 2010-01-25 2022-08-16 Donaldson Company, Inc. Pleated filtration media having tapered flutes
US11813561B2 (en) * 2014-11-10 2023-11-14 Donaldson Company, Inc. Filtration media, filter packs, and filter elements with protrusions

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