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
side
intake
airflux
web
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 claimed from EP89905067A external-priority patent/EP0415954A1/en
Application granted granted Critical
Publication of DE3815145C1 publication Critical patent/DE3815145C1/en
Application status is Expired legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/01Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with flat filtering elements
    • B01D29/016Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with flat filtering elements with corrugated, folded or wound filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D27/00Cartridge filters of the throw-away type
    • B01D27/04Cartridge filters of the throw-away type with cartridges made of a piece of unitary material, e.g. filter paper
    • B01D27/06Cartridge 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/11Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111Making filtering elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/11Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13Supported filter elements
    • B01D29/15Supported filter elements arranged for inward flow filtration
    • B01D29/21Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D29/00Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor
    • B01D29/11Other filters with filtering elements stationary during filtration, e.g. pressure or suction filters, or filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13Supported filter elements
    • B01D29/15Supported filter elements arranged for inward flow filtration
    • B01D29/21Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B01D29/213Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets having a concertina shape

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 of a zig-zag folded web of a relatively thin-walled filter material according to the preamble of Pa tentanspruchs.

Ein derartig aufgebauter Filterkörper ist aus DE-PS 12 48 618 bekannt. Such a designed filter body is known from DE-PS 12 48 618th Dort sind die Sicken so geformt, daß sich bei aufeinanderliegenden Filtermaterialbah nen an- und abströmseitig gleich geformte Strömungs räume ergeben. There, the beads are formed so that arise in superposed Filtermaterialbah NEN on and space downstream identically shaped flow. 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. This results in that the known embodiment in that in each case an outstanding for inflow groove with its longitudinal side to the outflow side directly to an outstanding neighboring bead on borders. Bei aufeinanderliegenden Filterbahnen führt dies dazu, daß jeweils an einem Ende des Strömungs raumes von diesem Strömungsraum nach außen weisende Sicken den Abschluß bilden. In superposed filter webs this causes looking at one end of the flow area of ​​this flow space surrounds outward form the termination. 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. In the downstream flow channel of in particular a liquid, is from the inflowing medium under pressure, it can just get at this point easy to fall together of the filtering material, whereby the flow cross-section is reduced undesirably.

Hier eine Verbesserung zu erreichen, ist die Aufgabe der vorliegenden Erfindung. Here to achieve an improvement, is the object 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. Benach this task by a formation of the beads and coordination when superposing barter filter material webs according to the characterizing features of patent claim is released.

Eine Filterbahn mit Sicken, wie sie zum Aufbau des erfindungsgemäßen Filterkörpers verwendet wird, ist an sich bereits aus DE-OS 19 22 976 bekannt. A filter strip with corrugations, as used for the construction of the filter body according to the invention, is already known per se from DE-OS 19 22 976th Nicht bekannt aus jener Schrift ist es jedoch, diese derart geformten Filterbahnen in der erfindungsgemäß vorge schlagenen Weise aufeinanderzulegen. Not known from that document, it is, however, successive set these thus formed filter webs in the inventively chosen way. 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. However, the way he inventive assignment of adjacent filter tracks is imperative to achieve the desired effect of layers against collapse of its filter 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. From DE-OS 26 51 910, a corrugated filter sheet is known moreover, periodically along the length of each two adjacent wave elevations distributed in the form of a W together form, whose central bar is formed higher than the two outer legs. 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. The higher center beam of the W-shaped waves exclusively used contiguous Fil terbahnen not support at the same time on all individual waves, but only in larger issues newsletters, thereby nenmaterials not to unnecessarily reduce the active filter regions of the Bah. 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. From this shaping of individual waves is no reference to a combination with the characteristics of a filter sheet according to DE-PS can be inferred 12 48 618 to thereby be able to achieve the attainable by the inventive solution Stabilitätser heightening a down in a zig-zag-folded filter web. 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. The inventively achieved stability consists in that the individual filter folds remain dimensionally stable even at high pressure differences interim rule intake and output sides and do not coincide in the direction downstream side.

Ein Ausführungsbeispiel ist in der Zeichnung darge stellt. An exemplary embodiment is prepared in the drawing Darge. Es zeigen Show it

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

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 VV 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 sheet material 1 is provided transversely to its longitudinal extension with individual folding lines 2, around which the web material may be folded in a zig-zag shape.

In das Bahnmaterial rechtwinklig zu den Faltlinien 2 eingeprägt sind einzelne Doppelsicken. In the sheet material is impressed at right angles to the fold lines 2 are single double beading. 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 . These beads consist of a double to lie in an operable filter on the upstream side next to strömsicke 3 and two 3 extending from the flanks of this bead on the other side of the filter web Abströmsicken. 4

Die Anströmsicke 3 erstreckt sich weiter auf der Ma terialbahn senkrecht heraus als die beiden jeweils zugeordneten Abströmsicken 4 . The Anströmsicke 3 further extends to the Ma terialbahn perpendicular out as the two respectively associated Abströmsicken. 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 zig-zag folded state of Filterma terialbahn 1 are located on the inflow side in each case to the strömsicken 3 together of two adjacent folding portions, while the outflow takes place over the support the smaller Abströmsicken. 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. The Anprdnung of the beads 3 and 4 makes it possible in particular on the downstream side a symmetrical across the width of the filter web support of the individual Fil terbahnfaltenabschnitte. Dadurch kann bei Aufrechter haltung einer großen freien Filterfläche eine gegen Kollabieren der Filterbahnfaltenabschnitte äußerst sicheres Abstützen erreicht werden. This one against collapse of the filter strip fold segments, extremely secure support can be reached at upright attitude of a large free filter surface.

Claims (1)

  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 of a zig-zag folded web of relatively thin-walled filter material having both the inflow side and on the Abström side between the fold edges in each case from the web plane outstanding elongated beads to gegenseiti gen spacing the pleats, and in which between the beads the same fold flat undeformed flat portions exist, characterized in that each inflow side projecting out of the filter material web Anströmsicke (3) merges at ihrenn two longitudinal sides in each case a rialbahn from the other side of the filter mate excellent Abströmsicke (4), where at the same heights of the Abströmsicken (4) are smaller than the heights of the same Anströmsicken (3) and that adjacent superposed webs each one hand, abut each other with their leading and on the other hand with their Abströmsicken.
DE3815145A 1988-05-04 1988-05-04 Filter body made of a zigzag-shaped pleated web Expired DE3815145C1 (en)

Priority Applications (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

Applications Claiming Priority (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
EP89905067A EP0415954A1 (en) 1988-05-04 1989-04-29 Strips of filter material with moulded corrugations and filter bodies 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
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
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

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 (10)

* 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 &amp; 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

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 element for liquids, in particular for the oil we 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 element for liquids, in particular for the oil we of Bronnkraftmaschinen
DE2651910A1 (en) * 1975-11-20 1977-06-08 Evans Adlard & Co Disposable filter element

Cited By (13)

* 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
EP1790406A3 (en) * 2005-11-22 2008-06-04 helsa-automotive GmbH &amp; Co. KG Filter element and method of making
EP1790406A2 (en) * 2005-11-22 2007-05-30 helsa-automotive GmbH &amp; Co. KG Filter element and method of making
US9517430B2 (en) 2007-02-02 2016-12-13 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
US9433884B2 (en) 2007-06-26 2016-09-06 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
US9084957B2 (en) 2008-07-25 2015-07-21 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US9855519B2 (en) 2008-07-25 2018-01-02 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US10058812B2 (en) 2010-01-25 2018-08-28 Donaldson Company, Inc. Pleated filtration media having tapered flutes

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D1 Grant (no unexamined application published) patent law 81
8100 Publication of the examined application without publication of unexamined application
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee