WO2001019491A1 - Filtre a liquide - Google Patents

Filtre a liquide Download PDF

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Publication number
WO2001019491A1
WO2001019491A1 PCT/EP2000/008993 EP0008993W WO0119491A1 WO 2001019491 A1 WO2001019491 A1 WO 2001019491A1 EP 0008993 W EP0008993 W EP 0008993W WO 0119491 A1 WO0119491 A1 WO 0119491A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
liquid
metal plate
filter housing
housing
Prior art date
Application number
PCT/EP2000/008993
Other languages
German (de)
English (en)
Inventor
Wilhelm Ardes
Original Assignee
Ing. Walter Hengst Gmbh & Co. Kg
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 Ing. Walter Hengst Gmbh & Co. Kg filed Critical Ing. Walter Hengst Gmbh & Co. Kg
Publication of WO2001019491A1 publication Critical patent/WO2001019491A1/fr

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
    • B01D29/111—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
    • B01D29/96—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
    • B01D35/16—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
    • 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
    • B01D35/30—Filter housing constructions
    • 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
    • B01D35/30—Filter housing constructions
    • B01D35/31—Filter housing constructions including arrangements for environmental protection, e.g. pressure resisting features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/42—Installation or removal of filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/29—Filter cartridge constructions
    • B01D2201/291—End caps
    • 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
    • B01D2201/34—Seals or gaskets for filtering elements
    • 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

Definitions

  • the present invention relates to a liquid filter, in particular for fuel or oil of an internal combustion engine, the liquid filter comprising a filter housing with at least one liquid inlet and liquid return channel each, a releasable cover which closes the filter housing in a liquid-tight manner and an exchangeable filter insert, and the liquid filter sealingly having a filter connection flange , e.g. an internal combustion engine, can be screwed, for which purpose a screw fastening element is arranged on the front side of the filter housing facing the filter connection flange, which has a central opening forming the liquid return channel with an internal thread that can be screwed to a threaded connector of the filter connection flange.
  • a filter connection flange e.g. an internal combustion engine
  • a liquid filter of the type mentioned is known from DE-U-94 11 212.
  • the screw fastening element consists of a steel screw machined by turning and milling, which is arranged in the center of the end face of the filter housing of the liquid filter.
  • An end wall of the filter housing extends radially outward from the peripheral region of the screw to the outer periphery of the filter housing, where sealing takes place against a counter surface of the filter connection flange.
  • the filter housing must consist of a relatively stable and rigid material, which in practice is usually die-cast aluminum with sufficient wall thickness.
  • a disadvantage of this known prior art is that both the filter housing and the central screw have to be machined, which causes relatively high processing costs.
  • the use of less stable or relaxing materials for the manufacture of the filter housing is ruled out in the known liquid filter, because such materials could not transmit the required forces safely and because they could not ensure permanent stability and tightness.
  • spin-on filters have long been known, e.g. from GB 1 449 853, which have a housing made of sheet metal with a metallic end wall with a greater material thickness. The front wall and the rest of the housing are permanently connected to each other; there is no removable lid. Therefore, when the filter insert is exhausted, only the complete filter can be replaced, which is no longer acceptable today for environmental reasons.
  • the object of the present invention is therefore to create a liquid filter of the type mentioned at the outset which avoids the disadvantages mentioned and in which, in particular, the manufacture is simplified and therefore less expensive and in which less stable and therefore less expensive without the risk of leaks or other damage Material for the fil- tergeophuse can be used, an exchange of the filter insert should remain possible when the remaining filter is used.
  • That the filter housing is a plastic injection molded part or a light metal die-cast part
  • That the screw fastening element is a metal plate which forms the predominantly area of the end face of the filter housing and
  • the screw fastening element designed as a metal plate is advantageously a relatively simple and therefore inexpensive workpiece.
  • the metal plate as a screw fastening element can easily be dimensioned in a sufficiently stable manner for all loads that occur, without the need for particularly large material thicknesses.
  • the metal plate in the assembled state of the filter with its radially outer region presses the filter housing axially against the filter connection flange, it is achieved that no more forces have to be transmitted in the radial direction from the inside to the outside within the filter housing; this power transmission is carried out by the metal plate. Therefore, materials can be used for the filter housing that have a lower rigidity and stability, such as plastic or light metal, without this affecting the functional reliability of the liquid filter.
  • the filter insert can be replaced if necessary, whereby all other parts of the filter can continue to be used.
  • this is preferably a die-cut, embossed and / or deep-drawn part made of sheet steel or a die-cast part made of die-cast aluminum.
  • the metal plate can be held captively in the remaining filter housing. This creates the possibility to completely pre-assemble the liquid filter including the filter insert built into it at the filter manufacturer and to deliver it to the user in this condition. At the user, e.g. an automobile manufacturer, then only the complete liquid filter has to be connected to the filter connection flange, e.g. an internal combustion engine to be screwed on; the liquid filter is then immediately ready for use.
  • the filter connection flange e.g. an internal combustion engine to be screwed on
  • the metal plate In order to hold the metal plate captively in the filter housing, it can be injected or cast into the rest of the filter housing.
  • the metal plate has a non-circular, preferably a polygonal or toothed outer circumference and is inserted into the rest of the filter housing in a press fit or form fit and thus non-rotatably.
  • the metal plate With a regular polygon or toothing, the metal plate can be positioned in several angular positions relative to the rest of the housing, which is advantageous for applications in which a certain orientation of the housing in its circumferential direction relative to the filter connection flange is necessary.
  • liquid filter suggests that the metal plate has a substantially circular outer circumference and into the remaining filter housing is loose and rotatable relative to this.
  • this embodiment of the liquid filter there is the advantageous possibility of first positioning the filter housing on the filter connection flange in a suitable position as viewed in the initial direction and then locking it in this position by screwing the metal plate tight.
  • This solution is particularly useful when the liquid filter is not rotationally symmetrical when viewed in the circumferential direction and therefore has a preferred position when viewed in the circumferential direction, which it should have after it has been installed.
  • Any layer can advantageously be produced in a stepless manner. The filter insert is inserted and the filter housing is closed using the cover after the metal plate has been screwed on.
  • the invention proposes that the metal plate has at least one opening outside its center at a distance from the central liquid return channel which forms the liquid inlet channel.
  • the metal plate can be provided with one or more openings in a very simple manner during its manufacture, so that the arrangement of channels can be omitted in the filter housing which is usually produced in an injection or casting process, which considerably simplifies the manufacture of the housing.
  • the metal plate have a plurality of openings arranged uniformly distributed in the circumferential direction on a circular line. This ensures that, on the one hand, the inflowing liquid to be filtered finds a low flow resistance when flowing through the metal plate and, on the other hand, that when the metal plate is loosely inserted into the housing, the openings as connecting elements for a screw mechanism. can be used for screwing on the metal plate. By means of a screwing tool engaging with the openings, the torques required for the sufficient screwing of the metal plate can be introduced into the metal plate without problems and in particular without damage.
  • the openings are formed by tabs bent axially outward from the metal plate, the axially outer end faces of which lie in the course and in the plane of the flange-side, radially outer end face of the filter housing.
  • the ends of the metallic tabs stand on the metallic filter connection flange in the assembled state, which ensures that a tight fit of the filter on the connection flange is maintained even in the long term, even if a relaxing material, e.g. Plastic, is used.
  • a first way to ensure the tightness of the connection between the filter and the connecting flange is that the flange-side, radially outer end face of the filter housing is provided with a sealing contour, preferably with a sealing lip, in its molded or cast part, the liquid filter being in the assembled state End face with the sealing contour lies sealingly on the filter connection flange. It is not necessary to insert a separate seal here, which simplifies filter assembly.
  • a seal can be provided between the filter connection flange and the flange-side, radially outer end face of the filter housing, an annular groove for receiving a sealing ring as a seal being preferably provided in the radially outer end face, and the sealing ring in the relaxed state protrudes from the groove in the axial direction of the filter housing and, when the liquid filter is assembled, lies completely inside the annular groove with elastic deformation.
  • the sealing ring ensures tightness even when using a material that is not suitable for sealing the housing.
  • the sealing ring required for the axial seal can advantageously be included in the prefabrication of the filter.
  • the outer diameter of the metal plate is at least as large as the outer diameter of the annular groove and that the radially outer region of the metal plate, seen in the filter axial direction, is behind the Ring groove lies. So that the outer circumference of the metal plate is such that only purely axial forces from the metal plate have to be introduced into the filter housing.
  • the filter housing does not have to absorb shear forces or other unfavorable forces.
  • the metal plate has a pipe-socket-shaped section pointing into the filter housing and surrounding the liquid return channel, on the outer circumference of which the filter insert can be attached in a sealing manner.
  • a pipe socket-shaped section can easily be integrally formed in the manufacture of the metal plate, so that no additional production costs are incurred as a result.
  • liquid drain opening In order to be able to drain the liquid in the liquid filter in a controlled manner before changing the filter insert, one can be in operation on the circumferential side in the filter housing and / or on the circumferential or front side in the cover a closed, if necessary releasable liquid drain opening can be provided for emptying the filter housing. If such a liquid drain opening is provided on the liquid filter, the design of the liquid filter with the metal plate inserted in various angular positions or rotatably in the filter housing is expediently used in order to ensure that the liquid drain opening lies at the lowest point of the mounted liquid filter when the liquid filter is installed comes. It does not matter how the threads in the metal plate and on the threaded connector of the filter connection flange run.
  • FIG. 1 shows a liquid filter in a first embodiment in longitudinal section
  • FIG. 2 the liquid filter in a second embodiment, also in longitudinal section,
  • Figure 3 shows the liquid filter in a third embodiment, also in longitudinal section, and
  • FIG. 4 shows the liquid filter from FIG. 3 in cross section along the line IV-IV in FIG. 3.
  • FIG. 1 of the drawing shows, as the first exemplary embodiment of a liquid filter 1, a "lying" filter, that is to say a filter installed with an essentially horizontal longitudinal axis.
  • a filter connection flange 7 is visible, which is an integral part of an internal combustion engine, in particular the engine block of the internal combustion engine.
  • the execution of this filter final flange 7 corresponds to conventional flange designs that are available on many internal combustion engines for the attachment of screw-on easy-change filter cartridges.
  • the filter connection flange 7 does not have to be changed, so that the liquid filter 1 as a replacement for an exchangeable screw-on filter cartridge which is only completely replaceable and thus represents a considerable amount of waste and is environmentally harmful, also as a "spin-on" filter known, can serve.
  • the liquid filter 1 comprises a filter housing 2, which is closed by a screw cap 4. Inside the filter housing 2 and the cover 4 there is a filter insert 5 which can be replaced after unscrewing the cover 4 and which is supported on the inside by a support body 6 against the forces occurring during operation.
  • the radially outer part of the filter housing 2 is formed in the exemplary embodiment according to FIG. 1 by an injection molded part made of plastic.
  • a metal plate 3 forms the housing area lying on the end face 20 of the filter housing 2.
  • the metal plate 3 is preferably made of steel or of die-cast aluminum.
  • the metal plate 3 has an opening which forms a liquid return channel 34 for cleaned liquid and which is in flow connection with a corresponding channel arranged in the same way within the filter connection flange 7.
  • a plurality of openings 33 are provided in the metal plate 3 for supplying liquid to be cleaned, which openings are provided radially on the outside of the central opening 34 and are in flow connection with a correspondingly extending annular channel in the filter connection flange 7.
  • the metal plate 3 With its radially outer edge region 32, the metal plate 3 rests on a step near the front end of the filter housing 2. On the inner circumference of the central opening In order to form the liquid return channel 34, the metal plate 3 has an internal thread 30. To form a sufficient number of threads, the metal plate 3 is formed here in one piece with a pipe socket-shaped section 31 pointing towards the inside of the filter housing 2, which has a smooth cylindrical shape on the outside and the outer circumference of which Filter insert 5 is attached sealingly.
  • a circumferential groove 21 is provided on the end face 20 of the filter housing 2, into which a sealing ring 22, preferably an elastomer O-ring, is inserted.
  • the axial contact pressure required for the sealing is brought about by screwing the metal plate 3 to a threaded connector 70 of the filter connection flange 7.
  • the embodiment of the liquid filter 1 according to FIG. 1 shows a liquid drain opening 25 on the downward-facing side of the filter housing 2, which is closed tightly by a screw 26 during normal operation of the liquid filter 1.
  • the liquid drain opening 25 is opened only before a filter insert change in order to let the interior of the liquid filter 1 run empty, the empty running taking place in a targeted and controlled manner through the liquid drain opening 25.
  • a practically liquid-free filter insert 5 is then removed from the liquid filter 1 and replaced by a fresh filter insert 5.
  • the metal plate 3 in this exemplary embodiment is inserted loosely and rotatable relative to the filter housing 2.
  • the openings 33 in the metal plate 3 can advantageously be used to engage a screwing tool in order to be able to introduce the required torque into the metal plate 3 without problems.
  • the metal plate 3 presses purely in the axial direction on the part of the filter housing 2 between the metal plate 3 and the filter connection flange 7 in which the seal 22 is located.
  • a relatively light and therefore also inexpensive material can be used for the filter housing 2, preferably a plastic, such as polyamide, or a particularly light light metal, such as magnesium.
  • the exemplary embodiment according to FIG. 2 largely corresponds to the exemplary embodiment according to FIG. 1, and reference is therefore made to the description of FIG. 1 with regard to the reference numbers not mentioned again below.
  • the difference in the embodiment of the liquid filter 1 according to FIG. 2 is that no liquid drain opening is provided here.
  • the metal plate 3 it is also not necessary for the metal plate 3 to be rotatable relative to the filter housing 2. Therefore, in the exemplary embodiment according to FIG. 2, the metal plate 3 is embedded, in particular injected, in the material of the remaining filter housing 2 on its outer peripheral region 32. There is thus the possibility of completely pre-assembling the liquid filter 1 according to FIG. 2 and then screwing it onto the filter connection flange 7 in the completely pre-assembled state, as is known from conventional screw-on replaceable filter cartridges.
  • Figure 3 of the drawing shows an embodiment of a liquid filter 1 in a standing version.
  • the liquid filter 1 has a housing 2 with a screw cap 4.
  • a filter insert 5 is arranged inside the liquid filter 1 and is stabilized on the inside by a support body 6.
  • the face 20 of the filter housing 2, which faces downward here, is also formed here by a metal plate 3, which is essentially identical to the metal plates 3 of the liquid filters according to FIGS. 1 and 2.
  • a difference in the design of the metal plate 3 according to FIG. 3 is that here the openings 33, which form the liquid inlet channel, are formed by punched tabs 35 which are bent outwards in the axial direction, downwards in the drawing.
  • the openings 33 are located relatively far outward in the metal plate 3.
  • the bending line of the tabs 35 bent downward lies directly in front of the radially outer edge region 32 of the metal plate 3.
  • each tab 35 lies in the course and in the plane of the flange-side end face 27 of the filter housing 2. Furthermore, a circumferential groove 21 with a sealing 22 inserted therein is made in the end face 27, as well even with the liquid filters 1 according to FIGS. 1 and 2.
  • the advantage of this embodiment of the metal plate 3 is that in the assembled state of the liquid filter 1, as shown in FIG. 3, the axially outward-facing end faces 37 of the metallic tabs 35 directly open stand up also metallic filter connection flange 7. This allows the use of less stable and relaxing material, for example plastic, for the filter housing 2. Relaxation processes occurring therein then have for the security and tightness of the connection of the liquid filter 1 with the filter connection flange 7 no negative consequences.
  • the contact pressure for holding and sealing the liquid filter 1 is also applied here by the radially outer edge region 32 of the metal plate 3, the radially outer edge region 32 being behind the annular groove 21 and the sealing ring 22 inserted therein.
  • the metal plate 3 also has a central opening 34 here, which forms the liquid return channel.
  • the metal plate 3 has an axially inwardly directed pipe socket-shaped section 31, onto which the filter insert 5 is attached. Inside, this section 31 of the metal plate 3 has an internal thread, which is screwed here again with a threaded connector 70 of the filter connection flange 7.
  • FIG. 4 of the drawing shows the liquid filter 1 from FIG. 1 in section along the line IV-IV.
  • the threaded connector 70 of the filter connecting flange 7 is visible in the very center of FIG.
  • the pipe socket-shaped section 31 of the metal plate 3 is located around the outside thereof.
  • the metal plate 3 then extends outward to its radially outer edge region 32.
  • the filter housing 2 is finally cut out at the very outside.
  • FIG. 4 further shows, a total of eight tabs 35 and eight openings 33 are provided, which are distributed at a regular angular distance over the circumference.
  • the downward-facing tabs 35 are located in corresponding recesses in the lower end region of the filter housing 2, so that the metal plate 3 can be inserted into the filter housing 2 in a total of eight different angular positions, but rotatability between the metal plate 3 and the filter housing 2 is prevented.
  • the river six ⁇ filter 1 can thus be completely pre-assembled and then screwed onto the filter connection flange 7 as a complete unit.
  • the part of the filter housing 2 which is not formed by the metal plate 3 can also be formed by a light metal, such as magnesium or aluminum, both of which can be processed by the die-casting process.
  • the metal plate 3 and the remaining part of the filter housing 2 are relatively simple parts that can be produced advantageously with low manufacturing costs and ideally with tools and thus particularly economically.
  • the liquid filter 1 according to FIGS. 1 to 4 can, which is not specifically shown here, be equipped with further technical elements that are common in such liquid filters, such as non-return valves or membranes in the channels 33 and / or 34 or a bypass valve between raw side and clean side of filter 1.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

La présente invention concerne un filtre à liquide (1) comprenant un boîtier de filtre (2) présentant un canal d'alimentation en liquide et de retour de liquide (33, 34), un couvercle amovible (4) et un élément filtrant (5) interchangeable. Le filtre (1) peut être vissé hermétiquement avec une bride de raccordement de filtre (7). Pour cela, un élément de fixation à vis (3) se trouve au niveau de la face (20) du boîtier de filtre (2) voisine de la bride de raccordement de filtre (7) lorsque celui-ci est monté. Ledit élément de fixation à vis présente une ouverture centrale formant le canal de retour de liquide (34), avec un filetage femelle (30) dans lequel peut être vissée une tubulure filetée (70) de la bride de raccordement de filtre (7). Le filtre à liquide (1) de l'invention se caractérise en ce que le boîtier de filtre (2) est une pièce moulée par injection en matière plastique ou une pièce moulée sous pression en métal léger, en ce que l'élément de fixation à vis (3) est une plaque métallique qui forme la partie superficielle principale de la face (20) du boîtier de filtre (2), et en ce que la plaque métallique (3), lorsque le filtre (1) est monté, bloque le boîtier de filtre (2) par l'arrière avec sa partie extérieure du point de vue radial (32), et la face de boîtier extérieure du point de vue radial (27) appuie axialement sur la bride de raccordement de filtre (7).
PCT/EP2000/008993 1999-09-14 2000-09-14 Filtre a liquide WO2001019491A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29916082.3 1999-09-14
DE29916082U DE29916082U1 (de) 1999-09-14 1999-09-14 Flüssigkeitsfilter

Publications (1)

Publication Number Publication Date
WO2001019491A1 true WO2001019491A1 (fr) 2001-03-22

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ID=8078843

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/008993 WO2001019491A1 (fr) 1999-09-14 2000-09-14 Filtre a liquide

Country Status (2)

Country Link
DE (1) DE29916082U1 (fr)
WO (1) WO2001019491A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007009533A1 (fr) * 2005-07-22 2007-01-25 Ufi Filters S.P.A. Dispositif filtrant pour filtration de l'huile
US7897046B2 (en) 2006-01-25 2011-03-01 Baldwin Filters, Inc. Fluid filter
DE102010006936A1 (de) * 2010-02-04 2011-08-04 MANN+HUMMEL GmbH, 71638 Filter, Gehäusedeckel eines Filtergehäuses und Verfahren zur Herstellung eines Gehäusedeckels
CN106975273A (zh) * 2017-03-31 2017-07-25 福州赛孚玛尼环保科技有限公司 一种组合机油滤芯

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10132200A1 (de) * 2001-07-03 2003-01-23 Mahle Filtersysteme Gmbh Flüssigkeitsfilter
DE10237668B4 (de) * 2001-08-23 2007-03-01 Mann + Hummel Gmbh Ölfilter, insbesondere für eine Brennkraftmaschine
CN107882988A (zh) * 2016-09-23 2018-04-06 成都九十度工业产品设计有限公司 一种弹性聚氨酯材料

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Publication number Priority date Publication date Assignee Title
US5538626A (en) * 1994-07-13 1996-07-23 Ing, Walter Hengst Gmbh & Co. Kg Liquid filter
US5711872A (en) * 1994-06-15 1998-01-27 Jones; John A. Reusable oil filter assembly
US5738785A (en) * 1995-12-20 1998-04-14 Baldwin Filters, Inc. Oil filter housing
WO1999051318A1 (fr) * 1998-04-02 1999-10-14 Filtrauto Boitier de filtre a embase en matiere plastique renforcee

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