EP1218084A1 - Ensemble filtre muni d'une sortie de vidange - Google Patents

Ensemble filtre muni d'une sortie de vidange

Info

Publication number
EP1218084A1
EP1218084A1 EP00960862A EP00960862A EP1218084A1 EP 1218084 A1 EP1218084 A1 EP 1218084A1 EP 00960862 A EP00960862 A EP 00960862A EP 00960862 A EP00960862 A EP 00960862A EP 1218084 A1 EP1218084 A1 EP 1218084A1
Authority
EP
European Patent Office
Prior art keywords
fluid
support
filter assembly
drain outlet
end wall
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Withdrawn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
EP00960862A
Other languages
German (de)
English (en)
Inventor
Robert Stephen Mules
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.)
Sogefi Filtration Ltd
Original Assignee
Sogefi Filtration Ltd
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 Sogefi Filtration Ltd filed Critical Sogefi Filtration Ltd
Publication of EP1218084A1 publication Critical patent/EP1218084A1/fr
Withdrawn legal-status Critical Current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
    • B01D29/96—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
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/153—Anti-leakage or anti-return valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/16—Valves
    • B01D2201/162—Valves with snap, latch or clip connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B01D2201/305—Snap, latch or clip connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/40—Special measures for connecting different parts of the filter
    • B01D2201/4084—Snap or Seeger ring connecting means

Definitions

  • the present invention relates to a fluid filter assembly for filtering a fluid using a filter element mounted on a support in a housing between a fluid inlet and fluid out formed in the housing.
  • the present invention relates to the provision of a drain outlet in the housing.
  • the present invention may be applied to an oil filter assembly, for example of the type used in a combustion engine.
  • the filter element is typically in the form of a corrugated sheet formed into an annulus and mounted on a support including annular end walls extending around respect ends of the filter element.
  • drain outlet which has the purpose of draining oil from the housing when the filter element is replaced.
  • the drain outlet will be connected to a sump such as an oil pan in the case of a conventional combustion engine.
  • the drain outlet is provided with a valve to prevent loss of oil during normal use of the filter assembly.
  • the valve is arranged in a machined bore and has numerous metal and/or plastic parts arranged to close the outlet using a ball bearing.
  • Such a drain outlet valve is therefore difficult and expensive to manufacture.
  • the location of the drain outlet valve at the bottom of the housing is disadvantageous as contaminants and sludge in the oil tend to collect and over time cause clogging or damage to the valve. It is physically difficult to clean or replace the valve given its location.
  • the present invention is intended to improve the drain outlet arrangement.
  • a fluid filter assembly comprising: a housing having an fluid inlet and a fluid outlet; and a filter element mounted on a support within the housing between the fluid inlet and the fluid outlet, wherein the housing has a drain outlet closed by the filter element support and the fluid filter assembly further comprises a loading element loading the support against the drain outlet.
  • the drain outlet is opened and the residual oil in the housing is allowed to drain.
  • the filter element support it is not necessary to provide a separate valve within the drain outlet. Therefore the cost and difficulty of manufacture of such a drain outlet valve are avoided. Similarly, the problems of such a drain outlet valve clogging or being damaged are avoided.
  • the loading element loading the support against the drain outlet is effective to close the drain outlet tightly. This avoids the need to provide the filter element support with a tight fit within the housing which would create difficulties in manufacture given the small tolerances required and would introduce difficulties in insertion and removal of the filter element.
  • the loading element can be used to load sealing faces of the support which seal the filter element between the fluid inlet and the fluid outlet. Therefore, the loading element can be provided with the additional purpose of effecting a tight seal for the filter element as well as tightly closing the drain outlet and hence be given a dual-purpose.
  • the loading element is a resilient loading element.
  • the present invention may be advantageously applied to a conventional type of filter assembly in which the housing comprises a base and a removable cap fitted together, the drain outlet being formed in the base. In such an assembly, the cap may be removed to allow replacement of the filter element.
  • the loading element is provided between the support and the cap.
  • the support is retained on the removable cap.
  • the filter element and support are also removed by virtue of being retained on the cap, which in turn causes opening of the drain outlet to allow draining of the fluid.
  • the support has a retaining portion protruding from the support and engaging the cap, and the loading element is a coiled spring, the coils of which encircle the retaining portion.
  • the present invention may advantageously be applied to a filter assembly employing a conventional filter element which is annular and has a support including an annular end wall extending around one end of filter element.
  • the annular end wall may be used to close the drain outlet.
  • the present invention may be applied using the annular end wall as a face to close the drain outlet, this being is a portion of the filter element support which would be present in any event, thereby avoiding the need to form the support with additional structural elements.
  • the annular end wall is suitable for closing the drain outlet as it is typically flat in order to cover and to conform to the annular edge of the filter element.
  • the present invention may be applied where the annular end wall of the support has a resilient annular valve element which constitutes a nonreturn valve across the inlet.
  • the resilient annular valve element may be used to seal the drain outlet.
  • the resilient annular valve element provides a good seal to the drain outlet by its very nature.
  • the annular valve element comprises a base portion disposed adjacent the annular end wall of the support and a resiliently flexible flap extending the base portion to close the fluid inlet and constitute the non-return valve, then preferably the base portion seals the drain outlet. This enhances the seal provided by the valve element, because the base portion is reinforced by the annular end wall of the support adjacent against which it is disposed.
  • valve element is retained on the annular end wall of the support. Accordingly, the seal is inevitably replaced together with the filter element. This is advantageous because the annular valve element is regularly replaced, before it degrades and allows leakage through the drain outlet.
  • the fluid outlet is disposed adjacent the drain outlet and has a rim protruding into the housing beyond the drain outlet. This is advantageous because it allows the fluid to drain out though the drain outlet in preference to the fluid outlet, therefore preventing unfiltered fluid from leaking out of the fluid outlet.
  • Fig. 1 is a cross-sectional side view through the centre of the fluid filter assembly
  • Fig. 2 is a cross-sectional top view of the housing of the fluid filter assembly along line II-II of Fig. 1 with both the filter element and port being removed.
  • the fluid filter assembly comprises a filter element 1 disposed in a housing 2 formed by a base 3 and a cap 4.
  • the base 3 comprises an end wall 5 and a generally cylindrical wall 6 upstanding from the end wall 5 and formed with an internal thread 7 at the end of the cylindrical wall 6 distal from the end wall 5.
  • the cap 4 comprises an end wall 8 and a generally cylindrical wall 9 extending therefrom with an external thread 8 at its distal end which screws into the internal thread 11 of the base 3 to releasably fit the cap 3 and base 4 to form the housing 2.
  • any means may be provided for releasably securing the cap 3 to the base 4, for example a bayonet fitting 4 or any other conventional means.
  • An O-ring seal 10 is disposed in an external groove in the cylindrical wall 9 of the cap 3 to seal against the cylindrical wall 6 of the base 3.
  • the base 3 and cap 4 may be formed of aluminium, another metal or preferably of a plastics material.
  • the walls 5, 6, 8 and 9 of the housing 2 together define a cavity in which the filter element is disposed.
  • the filter element 1 is a corrugated sheet of any suitable material such as paper or a paper-like material, formed into an annulus.
  • a first annular end wall 12 and a second annular end wall 13 are secured to respective axial ends of the filter element 1.
  • the filter element 1 together with the end walls 12 and 13 have a tight push-fit over a generally cylindrical core 14 to abut an annular shoulder 15 formed around the core 14. Consequently, the core 14 and the annular end walls 12 and 13 together constitute a support for the filter element 1 which is disposed within the housing axially within the cylindrical walls 6 and 9.
  • the core 14 is formed with a plurality of apertures 34 to allow the filtered fluid passing through the filter element 1 into the centre of the core 14.
  • the core 14 and hence the filter element 1 and the end walls 12 and 13 are retained on the cap by a plurality of axial projections 16 circumferentially spaced around the core 14, each with a radially outwardly extending lip 17 and together constituting a retaining portion .
  • the cap 4 is formed with a plurality of projections 18 extending axially from the end wall 8 of the cap 4 and spaced circumferentially around the outside of the projections 16 of the core 14.
  • the projections 18 of the cap 4 each have an inwardly extending lip 19 which radially overlap the lips 17 on the projections 16 of the core 14. Accordingly, engagement between the lips 17 and 19 retains the core 14 on the cap 4 when it is removed from the base 3 whilst allowing some relative axial movement between the core 14 and the cap 4.
  • a conventional over-pressure valve constituted by a valve member 20 engaged by hooked arms 21 to a valve spring 22 held by an annular flange 23 projecting internally from the core 14.
  • a coiled spring 33 is disposed between the cap 4 and the core 14 with its coils encircling the projections 16 of the core 14.
  • the spring 33 acts as a resilient loading element to bias the core 14 axially of the filter element 1 away from the cap 4 by engaging the shoulder 15 formed on the core 14.
  • any resilient loading element may alternatively be used, for example a metal press.
  • a weight could be provided as a loading element to bias the core downwardly in use.
  • the end wall 5 of the base 3 is formed with a fluid outlet 24 disposed in the centre of the end wall 5 with its rim 25 projecting into the core 14 through the centre of the first annular end wall 12.
  • a circular wall 26 is upstanding on the end wall 5 of the base 3 encircling the fluid outlet 24 of the base.
  • a fluid inlet 27 extends through the end wall 5 of the base 3 outside the circular wall 26.
  • the fluid inlet 27 is formed in this instance by three openings as show in Fig. 3, but any number of openings may be provided.
  • a drain outlet 31 extends through the end wall 5 of the base 3 and opens into the housing 2 through a widened portion 32 of the circular wall 26.
  • the drain outlet 31 is connected to a sump, such as the oil pan where the filter assembly is used in a combustion engine.
  • a resilient valve element 28 in the form of an annular ring made of rubber or any other suitable material is adjacent the first annular end wall 12.
  • the valve element 28 is retained on the first annular end wall 12 by an overhanging annular lip 35 formed on the inner periphery of the annular end wall 12.
  • the valve element 28 comprises a base portion 29 disposed adjacent the first annular end wall 12 and a resiliently flexible flap 30 extending from the base portion 29 at an angle.
  • the base portion 29 of the valve element 28 abuts the circular wall 26 of the base portion 5, and widened portion 32 of the circular wall 26 across the drain outlet 31.
  • the spring 33 loads the first annular end wall 12 against the circular wall 26, so that the first end wall constitutes a sealing face between the fluid inlet 27 and the fluid outlet 24 with the base portion 29 of the valve member 28 acting as a sealing element therebetween.
  • the spring 33 also loads the first annular end wall 12 against the widened portion 32 of the circular wall 26 so that the annular end wall 12 closes the drain outlet 31, with the base portion 29 of the valve element 28 acting as a sealing element for the drain outlet 31.
  • the spring 33 loads the shoulder 15 against the second annular end wall 13 which therefore acts as another sealing face between the fluid inlet 27 and the fluid outlet 24.
  • the flap 30 of the valve element 28 seals against the end wall 5 of the base 3 outside the fluid inlet 27 to close the fluid inlet 27. Pressure in the fluid inlet 27 causes the flap 30 to flex outwardly allowing fluid into the housing 2 so that the flap 30 constitutes a non-return valve.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un ensemble filtre servant à filtrer un liquide, tel que l'huile, dans un moteur à combustion. Cet ensemble filtre comprend un boîtier (2) muni d'un orifice d'admission du liquide (27) et d'un orifice de sortie du liquide (24), et un élément filtrant (1) monté sur un support (12, 13, 14) à l'intérieur du boîtier, entre l'orifice d'admission du liquide (27) et l'orifice de sortie du liquide (24). Le boîtier (2) comporte également une sortie de vidange (31). L'élément filtrant (1) est annulaire et comprend une paroi d'extrémité annulaire (12) entourant une extrémité de l'élément filtrant (1). La paroi d'extrémité annulaire (12) ferme la sortie de vidange (31). Le support (12, 13, 14) de l'élément filtrant est retenu sur un bouchon amovible (4) lui-même fixé à une base, et l'ensemble constitue le boîtier (2). Un élément de pression souple en forme de ressort (33) incline le support (12, 13, 14) contre la sortie de vidange (31) et exerce une pression sur les faces d'étanchéité du support (12, 13, 14), lesquelles scellent l'élément filtrant (1) entre l'orifice d'admission du liquide (27) et l'orifice de sortie du liquide (24). La paroi d'extrémité annulaire (12) du support comporte un élément de soupape (28) qui comprend une partie de base (29) disposée à proximité immédiate de la paroi d'extrémité annulaire (12) et scelle la sortie de vidange (31) et un rabat (30) s'étendant depuis la partie de base (29) pour fermer l'orifice d'admission du liquide (27) et servir de clapet antiretour.
EP00960862A 1999-09-29 2000-09-20 Ensemble filtre muni d'une sortie de vidange Withdrawn EP1218084A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9923064 1999-09-29
GB9923064A GB2354721A (en) 1999-09-29 1999-09-29 Oil filter with drain and inlet non-return valve
PCT/GB2000/003607 WO2001023068A1 (fr) 1999-09-29 2000-09-20 Ensemble filtre muni d'une sortie de vidange

Publications (1)

Publication Number Publication Date
EP1218084A1 true EP1218084A1 (fr) 2002-07-03

Family

ID=10861828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960862A Withdrawn EP1218084A1 (fr) 1999-09-29 2000-09-20 Ensemble filtre muni d'une sortie de vidange

Country Status (4)

Country Link
EP (1) EP1218084A1 (fr)
JP (1) JP2003510174A (fr)
GB (1) GB2354721A (fr)
WO (1) WO2001023068A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10235902A1 (de) * 2002-08-06 2004-02-19 Mann + Hummel Gmbh Flüssigkeitsfilter, insbesondere Ölfilter für Kraftfahrzeuge
US6896803B2 (en) * 2003-03-28 2005-05-24 Arvin Technologies, Inc. Filter apparatus and associated method
JP4577199B2 (ja) * 2005-12-05 2010-11-10 トヨタ紡織株式会社 流体フィルタ及びその使用方法
JP4726750B2 (ja) * 2006-09-13 2011-07-20 株式会社Ｒｏｋｉ オイルフィルタ
JP4830929B2 (ja) * 2007-03-15 2011-12-07 トヨタ紡織株式会社 オイルフィルタ
JP4780028B2 (ja) * 2007-05-07 2011-09-28 トヨタ紡織株式会社 エレメント交換型流体フィルタ
SE532512C2 (sv) * 2008-06-02 2010-02-09 Scania Cv Abp Anordning och filterkassett för filtrering av vätskeformigt medium
KR101258734B1 (ko) 2010-02-22 2013-04-26 (주)엘지하우시스 사무기기 외부 부착형 분진 포집필터 조립체
KR101190220B1 (ko) 2011-04-21 2012-10-16 말레동현필터시스템 주식회사 오일필터모듈
DE102015002173B4 (de) * 2015-02-24 2018-10-04 Mann+Hummel Gmbh Strömungsventil
CN108136288B (zh) 2015-09-23 2021-06-25 沃尔沃卡车集团 过滤器插入件和过滤器设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3538589A1 (de) * 1985-10-30 1987-05-07 Hengst Walter Gmbh & Co Kg Oelfilter zum reinigen von schmieroel
DE3622154C1 (de) * 1986-07-02 1987-05-21 Daimler Benz Ag Filteranordnung
DE4131353A1 (de) * 1991-03-28 1992-10-01 Knecht Filterwerke Gmbh Fluessigkeitsfilter, insbesondere schmieroelfilter fuer verbrennungsmotoren
DE4330840C1 (de) * 1993-09-11 1995-02-16 Hengst Walter Gmbh & Co Kg Filter für die Reinigung von Flüssigkeiten
GB9408973D0 (en) * 1994-05-05 1994-06-22 Fram Europ Fluid filters
DE4428771A1 (de) * 1994-08-13 1996-02-15 Mann & Hummel Filter Filter, insbesondere zum Reinigen von Schmieröl einer Brennkraftmaschine
FR2747318B1 (fr) * 1996-04-10 1998-06-26 Filtrauto Dispositif de filtrage et de refroidissement d'huile
SE509996C2 (sv) * 1998-03-04 1999-03-29 Purolator Products Co Anordning vid ett oljefilter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0123068A1 *

Also Published As

Publication number Publication date
GB9923064D0 (en) 1999-12-01
JP2003510174A (ja) 2003-03-18
WO2001023068A1 (fr) 2001-04-05
GB2354721A (en) 2001-04-04

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