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DE3935503A1 - Ring filter element - with a short fold followed by at least two long folds - Google Patents

Ring filter element - with a short fold followed by at least two long folds

Info

Publication number
DE3935503A1
DE3935503A1 DE3935503A DE3935503A DE3935503A1 DE 3935503 A1 DE3935503 A1 DE 3935503A1 DE 3935503 A DE3935503 A DE 3935503A DE 3935503 A DE3935503 A DE 3935503A DE 3935503 A1 DE3935503 A1 DE 3935503A1
Authority
DE
Germany
Prior art keywords
filter element
folds
ring filter
short fold
filter
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
DE3935503A
Other languages
German (de)
Other versions
DE3935503C2 (en
Inventor
Ralf Nick
Dieter Noack
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 DE3935503A priority Critical patent/DE3935503A1/en
Publication of DE3935503A1 publication Critical patent/DE3935503A1/en
Application granted granted Critical
Publication of DE3935503C2 publication Critical patent/DE3935503C2/de
Granted 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
    • B01D29/11—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
    • B01D29/23—Supported filter elements arranged for outward flow filtration
    • B01D29/232—Supported filter elements arranged for outward flow filtration with corrugated, folded or wound sheets
    • 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
    • B01D2201/122—Pleated filters with pleats of different length

Landscapes

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

Abstract

A ring filter element (1) uses a strip (2) of filter paper which is arranged in zigzag folds, with every two long folds (3) followed by one shorter fold (4). ADVANTAGE - This improves the filtration efficiency and lengthens the service time of the filter element.

Description

Die Erfindung betrifft ein Ringfilterelement aus ei­ nem zickzack-förmig gefalteten Filtermaterial nach dem Oberbegriff des Anspruchs 1.The invention relates to a ring filter element made of egg filter material folded in a zigzag shape the preamble of claim 1.

Ein derartiges Filterelement ist bekannt aus der DE- AS 23 11 855. Das dort gezeigte Filterelement aus ei­ nem Streifen aus mit Kunstharz imprägniertem Filter­ papier ist in eine hohle zylindrische Form geformt, wobei der Streifen in Ziehharmonikaweise um zwei al­ ternierende Gruppen von Faltlinien gefaltet und an seinen Enden zur Bildung einer Reihe von Faltlagen verbunden ist, die radial einwärts in bezug auf das Element gesehen, W-Form aufweisen, so daß die beiden Faltlagen, die sich von den äußeren zum inneren Um­ fang des Elementes erstrecken, sich mit schmalen Faltlagen, die sich nur über einen Teil der Strecke zu dem inneren Umfang erstrecken, abwechseln.Such a filter element is known from DE AS 23 11 855. The filter element shown there made of egg a strip of filter impregnated with synthetic resin paper is shaped into a hollow cylindrical shape, the stripe in concertina style by two al terning groups of fold lines folded and on its ends to form a series of folds connected radially inward with respect to the Seen element, have W shape, so the two Folding positions, which differ from the outer to the inner order the beginning of the element, narrow Folding positions that are only part of the route extend to the inner circumference, alternate.

Nachteilig an einer derartigen Ausführung ist, daß sie trotz Ausnutzung der relativ breiten Zwischenräu­ me an dem äußeren Umfang des Filterelementes durch Vorsehen einer schmalen Faltlage nach jeder breiten Faltlage nicht zu einer optimalen Filterflächenaus­ nutzung ausreicht.A disadvantage of such an embodiment is that despite the use of the relatively wide space me on the outer circumference of the filter element Provide a narrow fold position after each wide  Folded position does not result in an optimal filter surface use is sufficient.

Hiervon ausgehend liegt der Erfindung die Aufgabe zu­ grunde, die Anordnung des Filtermaterials in Richtung auf einen verbesserten Filtrationswirkungsgrad sowie eine Erhöhung der Standzeit des Filters zu verändern.Proceeding from this, the object of the invention reasons, the arrangement of the filter material in the direction on improved filtration efficiency as well to change an increase in the service life of the filter.

Die Lösung der Erfindung wird erreicht mit einem Ringfilterelement mit den Merkmalen nach dem Kennzei­ chen des Patentanspruchs 1.The solution of the invention is achieved with a Ring filter element with the characteristics according to the label Chen of claim 1.

Eine vorteilhafte Ausgestaltung der Erfindung ist in dem Anspruch 2 enthalten.An advantageous embodiment of the invention is in included in claim 2.

Ein Ausführungsbeispiel nach der Erfindung ist skiz­ zenhaft in der Zeichnung dargestellt.An embodiment according to the invention is sketchy shown in the drawing.

Ein Ringfilterelement 1 für einen runden Filterein­ satz umfaßt einen Filterpapierstreifen 2, der zick­ zack-förmig so gefaltet ist, daß jeweils auf zwei lange Falten 3 eine kürzere Falte 4 folgt.A ring filter element 1 for a round filter insert comprises a filter paper strip 2 , which is folded in a zigzag shape such that a shorter fold 4 follows two long folds 3 .

Das günstigste Maß dt für die Tiefe der kurzen Falte (4) ist abhängig vom Verhältnis Außendurchmesser da zu Innendurchmesser di des Filtereinsatzes und so ge­ wählt, daß der Totraum zwischen den Falten (3, 4) ein Minimum aufweist.The cheapest dimension d t for the depth of the short fold ( 4 ) is dependent on the ratio of the outer diameter d a to the inner diameter d i of the filter insert and so selected that the dead space between the folds ( 3 , 4 ) has a minimum.

Durch eine derartige Gestaltung des Ringfilterelemen­ tes wird die wirksame Filterfläche im Vergleich zu entsprechenden Filtereinsätzen gleicher äußerer Bau­ abmessungen beträchtlich erhöht und somit der Filtra­ tionswirkungsgrad und die Standzeit des Filters ver­ bessert.Through such a design of the ring filter element The effective filter area is compared to corresponding filter inserts of the same outer construction  dimensions increased considerably and thus the Filtra efficiency and the service life of the filter ver improves.

Claims (2)

1. Ringfilterelement aus einem zickzack-förmig ge­ falteten Filtermaterial, mit radial ausgerichte­ ten über die radiale Tiefe unterschiedlich langen Falten, von denen die kürzeren radial außen lie­ gen, dadurch gekennzeichnet, daß auf eine kurze Falte (4) mindestens zwei lan­ ge Falten (3) folgen.1. Ring filter element made of a zigzag-shaped pleated filter material, with radially aligned th folds of different lengths over the radial depth, of which the shorter ones lie radially on the outside, characterized in that on a short fold ( 4 ) at least two long folds ( 3 ) follow. 2. Ringfilterelement aus einem zickzack-förmig ge­ falteten Filtermaterial nach Anspruch 1, dadurch gekennzeichnet, daß jeweils zwei lange Falten (3) auf jeweils eine kurze Falte (4) folgen.2. Ring filter element made of a zigzag-shaped folded filter material according to claim 1, characterized in that two long folds ( 3 ) each follow a short fold ( 4 ).
DE3935503A 1989-10-25 1989-10-25 Ring filter element - with a short fold followed by at least two long folds Granted DE3935503A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE3935503A DE3935503A1 (en) 1989-10-25 1989-10-25 Ring filter element - with a short fold followed by at least two long folds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3935503A DE3935503A1 (en) 1989-10-25 1989-10-25 Ring filter element - with a short fold followed by at least two long folds

Publications (2)

Publication Number Publication Date
DE3935503A1 true DE3935503A1 (en) 1991-05-02
DE3935503C2 DE3935503C2 (en) 1992-12-03

Family

ID=6392163

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3935503A Granted DE3935503A1 (en) 1989-10-25 1989-10-25 Ring filter element - with a short fold followed by at least two long folds

Country Status (1)

Country Link
DE (1) DE3935503A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320657A (en) * 1993-04-30 1994-06-14 Dana Corporation Staggered short pleat air filter
US6598749B2 (en) 2000-09-15 2003-07-29 Cuno Incorporated Spiral pleated filter cartridges
EP1595590A1 (en) * 1999-01-07 2005-11-16 Cuno Incorporated Pleated filter element and method of forming a pleated filter element
EP1757355A4 (en) * 2004-04-15 2007-06-13 Entegris Inc Pleated-type cartridge filter device
US9539527B2 (en) 2010-12-28 2017-01-10 Sartorius Stedim Biotech Gmbh Filter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5543047A (en) 1992-11-06 1996-08-06 Pall Corporation Filter with over-laid pleats in intimate contact

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022861A (en) * 1958-01-08 1962-02-27 American Air Filter Co Filter medium
DE1611083A1 (en) * 1967-08-16 1971-05-19 Faudi Feinbau Separator
DE2311855B2 (en) * 1972-03-11 1974-05-22 General Motors Ltd., Dunstable, Bedfordshire (Grossbritannien)
US4655921A (en) * 1984-07-03 1987-04-07 Tokyo Roki Co., Ltd. Filter element
US4673503A (en) * 1985-07-18 1987-06-16 Tokyo Roki Co., Ltd. Variant length pleated filter element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3022861A (en) * 1958-01-08 1962-02-27 American Air Filter Co Filter medium
DE1611083A1 (en) * 1967-08-16 1971-05-19 Faudi Feinbau Separator
DE2311855B2 (en) * 1972-03-11 1974-05-22 General Motors Ltd., Dunstable, Bedfordshire (Grossbritannien)
US4655921A (en) * 1984-07-03 1987-04-07 Tokyo Roki Co., Ltd. Filter element
US4673503A (en) * 1985-07-18 1987-06-16 Tokyo Roki Co., Ltd. Variant length pleated filter element

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5320657A (en) * 1993-04-30 1994-06-14 Dana Corporation Staggered short pleat air filter
EP1595590A1 (en) * 1999-01-07 2005-11-16 Cuno Incorporated Pleated filter element and method of forming a pleated filter element
US6598749B2 (en) 2000-09-15 2003-07-29 Cuno Incorporated Spiral pleated filter cartridges
EP1757355A4 (en) * 2004-04-15 2007-06-13 Entegris Inc Pleated-type cartridge filter device
US9539527B2 (en) 2010-12-28 2017-01-10 Sartorius Stedim Biotech Gmbh Filter

Also Published As

Publication number Publication date
DE3935503C2 (en) 1992-12-03

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8327 Change in the person/name/address of the patent owner

Owner name: MAHLE FILTERSYSTEME GMBH, 70376 STUTTGART, DE

8339 Ceased/non-payment of the annual fee