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US20100224161A1 - Liquid Filtering Device - Google Patents

Liquid Filtering Device Download PDF

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Publication number
US20100224161A1
US20100224161A1 US11/993,573 US99357306A US2010224161A1 US 20100224161 A1 US20100224161 A1 US 20100224161A1 US 99357306 A US99357306 A US 99357306A US 2010224161 A1 US2010224161 A1 US 2010224161A1
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US
United States
Prior art keywords
filter
return diaphragm
end plate
functional carrier
arrangement according
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.)
Abandoned
Application number
US11/993,573
Other languages
English (en)
Inventor
Markus Kolczyk
Rainer Loos
Daniel Lucas
Sven Epli
Herbert Jainek
Ralf Blum
Jörg Kramer
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.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel 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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Assigned to MANN+HUMMEL GMBH reassignment MANN+HUMMEL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KRAMER, JOERG, LOOS, RAINER, EPLI, SVEN, LUCAS, DANIEL, BLUM, RALF, JAINEK, HERBERT, KOLCZYK, MARKUS
Publication of US20100224161A1 publication Critical patent/US20100224161A1/en
Priority to US14/324,595 priority Critical patent/US10456716B2/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • 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
    • 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
    • B01D35/147—Bypass or safety 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
    • B01D35/14—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
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/157—Flow control valves: Damping or calibrated passages
    • 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
    • B01D35/157—Flow control valves: Damping or calibrated passages
    • B01D35/1576—Calibrated passages
    • 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
    • B01D35/18—Heating or cooling the filters
    • 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
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/20—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for cooling
    • 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
    • F02M37/46—Filters structurally associated with pressure regulators
    • 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
    • B01D2201/167—Single-way valves
    • 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
    • B01D2201/295—End caps with projections extending in a radial outward direction, e.g. for use as a guide, spacing 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
    • B01D2201/34—Seals or gaskets for filtering elements
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F01M2001/105—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements
    • F01M2001/1064—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements comprising drains for oil to the carter, e.g. to recover spilled oil during change of filters
    • 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
    • F01M2011/031—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means
    • F01M2011/033—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means comprising coolers or heat exchangers
    • 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
    • F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
    • F02M37/0023—Valves in the fuel supply and return system
    • F02M37/0029—Pressure regulator in the low pressure fuel system
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a filtering arrangement for liquids, in particular for oil or fuel of an internal combustion engine, according to the preamble of the independent claim.
  • Filter elements for liquid filtration of viscous media such as oil or fuel are produced in a conventional way from pleated filter media preferably in a cylindrical shape.
  • These filter elements can be free of metal and can be provided with an end plate of film, cardboard, plastic material, for example, PA, or something similar.
  • Embodiments with metal end plates and a central metal tube are possible also.
  • the pleats of the filter elements are often incorporated into the end plates, for example, glued, welded, or foamed, and directly connect these elements.
  • the embodiments comprising a central tube for receiving the filter elements are often designed such that a reciprocal sealing action of the unfiltered side and the filtered side in the flow of the medium to be filtered is realized by means of an O-ring that is pushed onto the central tube; the O-ring is then exchangeable during servicing.
  • a metal-free filter element in an oil filter for filtering oil of an internal combustion engine.
  • This filter element is inserted into a housing and the housing is closed off by a lid.
  • a non-return vale is usually provided in the housing.
  • at least one seal is arranged on the filter element such that it rests seal-tightly against a housing wall of the filter housing within a predetermined axial movement area.
  • non-return valves are inserted in a separate assembly step into the housing and the non-return valves are comprised usually of a valve plate that is pre-tensioned by a spring; a valve crown; and a valve seat.
  • the valve is screwed into the housing or inserted, wherein, generally, it is disadvantageous that assembly of this module is complex.
  • DE 42 40 656 C2 disclose a further filtering arrangement for fuel and/or lubricants of an internal combustion engine in which a bottom drainage is provided that is closed off by an end plate of the filter element upon insertion of the filter element. This drainage is opened as soon as the filter element is removed so that the oil can flow out through this drainage bore into a catch basin.
  • a non-return valve that is comprised of a metal plate that is loaded by a spring and that seals the supply bore for the unfiltered oil. In this connection, different valve components are required.
  • U.S. Pat. No. 5,413,712 discloses a filter for liquids in which the end plates of the cylindrical filter element are made from plastic material that is connected to the filter element. As a non-return diaphragm, an additional radially sealing rubber diaphragm is provided that rests against the end plate and is inserted during assembly.
  • the invention has the object to further develop a filter arrangement according to the preamble of the independent claim in a simple way such that a non-return valve can be produced and mounted in the filter housing in a simple way.
  • the filter arrangement for liquids in accordance with the invention has according to the preamble a cylindrical filter element that is insertable axially into the filter housing, wherein the filter element after mounting effects closure of a return device for the unfiltered liquid that is to be filtered with at least one seal secured on the filter element acting as a non-return diaphragm.
  • the filter arrangement according to the invention is designed such that the non-return diaphragm is mounted on a functional carrier of the filter arrangement in such a way that an axial and/or radial sealing action of the unfiltered side and filtered side of the filter arrangement is effected.
  • the liquids to be filtered can be, for example, fuel and/or lubricants for an internal combustion engine in a motor vehicle, but also water.
  • the non-return diaphragm can be mounted on an axial projection of the functional carrier in such a way that a flexible contact of the non-return diaphragm on the sealing surfaces of the filter arrangement results within axially predetermined limits.
  • the axial projection of the functional carrier is dimensioned such that by means of the projection, upon contacting a step of the filter housing, a stop is provided.
  • the functional carrier can be an end plate that is fixedly connected to the filter element, wherein the non-return diaphragm is attached to the end plate and wherein the end plate is designed such that radial noses are provided on it that laterally engage matching recesses of the filter housing, wherein the recesses in this connection are also sized such that with the recesses when contacted by the radial noses a stop is formed so that by means of the remaining space a predetermined pretension can be generated when the diaphragm rests against the sealing surface of the filter housing.
  • the functional carrier has a metal-free central tube fixedly connected to the filter element to which the non-return diaphragm is seal-tightly attached.
  • a diaphragm for example, made from elastomer, is mounted that prevents that the filter housing will run empty in certain mounting situations.
  • the diaphragm is designed such that it acts as a radial or axial seal between the unfiltered and filtered sides with a corresponding projection of the filter housing.
  • the non-return diaphragm is exchangeable in this embodiment and is exchanged together with the filter element.
  • the functional carrier is a central tube that is metal-free and is mounted fixedly in the housing of the filter arrangement, wherein the non-return diaphragm is fixedly connected to the tube.
  • the embodiment of the central tube must however be such that the filter element can be removed in a direction toward the lid.
  • the diaphragm must be made of a material, for example, an appropriate elastomer, that is permanent and matched to the service life of the vehicle.
  • the material of the central tube can be selected within limits but should be completely incineratable so that in this connection in particular plastic materials such PA, PP, PE, POM, PUR or comparable materials are advantageous.
  • the functional carrier can also be an end plate that is fixedly connected to the filter element and to which the diaphragm is attached.
  • the functional support has an end plate that is connected by means of a snap-on connection to the filter element to which end plate the non-return diaphragm is attached.
  • radial snap-on noses can engage laterally the intermediate spaces of the folded filter webs of the filter element above the axial glued connection of the filter webs and provide a detachable connection in this way.
  • elastomer extensions of the non-return diaphragm that are secured on the functional carrier can be clamped radially and/or axially between the functional carrier in the filter element for sealing purposes.
  • Such a component that is composed of the non-return diaphragm and the functional carrier can be pre-manufactured in a simple way independent of the filter element and can be attached by simple manipulations and optionally can also be removed once the filter element is mounted.
  • the non-return diaphragm in all afore described embodiments can be connected fixedly to the functional carrier by gluing, welding, or by means of a two-component method.
  • a detachable connection of the non-return diaphragm with the functional carrier by coupling can be provided.
  • the filter housing can be very compact.
  • the non-return diaphragm can be produced and mounted inexpensively and is therefore less expensive than a spring-loaded cup valve in accordance with the prior art.
  • the non-return diaphragm according to the invention can be embodied as a shaped part and, in an advantageous way, can take over the sealing function of an O-ring as a seal for the otherwise required sealing action between the unfiltered side and filtered side of the filter arrangement so that this element can also be eliminated.
  • FIG. 1 a section of a basic configuration of a filter arrangement for liquids according to the prior art
  • FIG. 2 a a schematic illustration of a filter element for a filter arrangement according to FIG. 1 with a non-return diaphragm and an axial sealing action of the unfiltered side in the liquid flow;
  • FIG. 2 b a schematic illustration of a filter element for a filter arrangement according to FIG. 1 with a non-return diaphragm and a radial sealing action of the unfiltered side in the liquid flow;
  • FIG. 3 a a detail illustration of a radially sealing non-return diaphragm with a two-component attachment on an end plate of the filter element;
  • FIG. 3 b a detail view of an axially sealing non-return diaphragm with a two-component attachment on an end plate of the filter element;
  • FIG. 3 c a detail illustration of a radially sealing non-return diaphragm that is coupled to an end plate of the filter element
  • FIG. 3 d a detail view of an axially sealing non-return diaphragm that is coupled to an end plate of the filter element
  • FIG. 3 e a detail illustration of another embodiment of an axially sealing non-return diaphragm that is connected to an end plate of the filter element;
  • FIG. 4 a schematic illustration of an axially sealing non-return diaphragm that is mounted on a two-part snapped-on central tube for a filter element;
  • FIG. 5 a schematic illustration of an axially sealing non-return diaphragm that is mounted on a single-part central tube for a filter element;
  • FIG. 6 a schematic illustration of a radially sealing non-return diaphragm that is mounted on a single-part central tube for a filter element
  • FIG. 7 a further schematic illustration of a non-return diaphragm that is mounted on an extended central tube for a filter element
  • FIGS. 8 a to 8 c further embodiments of attachments of the non-return diaphragm on the central tube according to FIG. 7 ;
  • FIG. 9 an embodiment of an end plate on the filter element that has a stop for generating a defined pretension for the non-return diaphragm
  • FIG. 10 an embodiment that has an end plate with a non-return diaphragm and can be attached to the filter element by means of a snap-on connection;
  • FIG. 11 a plan view of one embodiment of an end plate with radial noses.
  • FIG. 1 a filter arrangement is illustrated that, in principle, corresponds to a filter arrangement for fuel or lubricant for an internal combustion engine disclosed in the prior art reference DE 100 46 494 A1.
  • the unfiltered liquid that is to be filtered flows through an inlet 1 into the filter housing that is comprised of a top part 2 and a bottom part 3 .
  • a filter element 4 of zigzag-folded filter paper is arranged that is pushed onto a central tube 5 and is clamped fixedly upon joining the filter housing.
  • the unfiltered liquid flows through the filter element 4 and exits at the filtered side through the central tube 5 and through the outlet 6 .
  • a non-return diaphragm 7 for example, made of elastomer, is arranged on the end plate 8 of the filter element 4 and releases at the unfiltered side the liquid flow but upon interruption of the flow, for example, when the internal combustion engine is shut down, prevents return flow into the supply channel 1 as the diaphragm contacts axially or radially the filter housing.
  • FIGS. 2 a and 2 b illustrate the principal mechanisms of the function of such non-return diaphragms 7 ; FIG. 2 a shows an axial sealing action and FIG. 2 b shows a radial sealing action.
  • FIGS. 3 a to 3 e show respectively different embodiments of the non-return diaphragm 7 mounted on an end plate 8 .
  • the FIGS. 3 a and 3 b show non-return diaphragms 7 that are glued, welded or connected by a two-component method, and FIGS. 3 c to 3 e show non-return diaphragms 7 coupled to the end plate 8 .
  • FIG. 4 shows the attachment of the non-return diaphragm 7 on a two-part central tube 5
  • FIG. 5 and FIG. 6 show, respectively, an attachment of the non-return diaphragm 7 on a single-part central tube 5 .
  • FIG. 7 shows an embodiment in which the non-return diaphragm 7 is attached to the central tube 5 in such a way that a sealing bead 9 results with which a radial sealing action between the central tube 5 and the bottom housing part 3 (compare FIG. 1 ) can be realized.
  • FIG. 8 a shows the possibility of an axial sealing action with the sealing bead 9
  • FIGS. 8 b and 8 c show further sealing actions as a supplement to the arrangement according to FIG. 7 .
  • FIG. 9 as a supplement to the illustrations of FIGS. 3 a to 3 c , it is shown that for an end plate 8 as a functional carrier a non-return diaphragm 10 can be attached to the end plate 9 and in particular to a projection in the form of an axial projection 11 of the end plate 8 .
  • This area of the end plate 8 is embedded by injection-molding with an elastomer for forming the non-return diaphragm 10 wherein, in this connection, a radial seal 12 for sealing relative to an inner sealing pin 13 can be integrated.
  • the axial projection 11 is sized with regard to its length such that by means of it upon contacting the step 14 of the filter housing a stop is formed so that as a result of the remaining space (arrow 15 ) a predetermined pretension can be produced when the non-return diaphragm 10 contacts the sealing surface of the filter housing.
  • FIG. 10 shows an alternative embodiment of an end plate 16 as a functional carrier having on the exterior so-called snap-on noses 17 so that the non-return diaphragm 10 with the end plate 16 can be connected by means of a snap connection to the filter element 4 .
  • the snap-on noses 17 engage laterally the intermediate spaces of the folded filter webs of the filter element 4 above an axial glued connection 18 of the filter webs and provide a detachable connection in this way.
  • An end plate 20 according to FIG. 11 is designed such that, as a modification to the end plate 16 according to FIG. 10 , radial noses 21 are provided that engage lateral recesses, not shown, of the filter housing, as is illustrated e.g. by means of the bottom part 3 according to FIGS. 2 a and 2 b .
  • the recesses are sized such that with them, when contacted by the radial noses 21 , a stop is formed so that by means of the remaining space a predetermined pretension can be produced when the non-return diaphragm contacts the sealing surface of the filter housing.
  • the invention is, for example, usable in automotive technology, in particular in filter arrangements for liquids, in particular for oil or fuel.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filtration Of Liquid (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
US11/993,573 2005-06-30 2006-06-22 Liquid Filtering Device Abandoned US20100224161A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/324,595 US10456716B2 (en) 2005-06-30 2014-07-07 Liquid filtering device

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE202005010445.0 2005-06-30
DE202005010445U DE202005010445U1 (de) 2005-06-30 2005-06-30 Filteranordnung für Flüssigkeiten
PCT/EP2006/063462 WO2007003517A2 (fr) 2005-06-30 2006-06-22 Dispositif de filtration pour liquides

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2006/063462 A-371-Of-International WO2007003517A2 (fr) 2005-06-30 2006-06-22 Dispositif de filtration pour liquides

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/324,595 Continuation US10456716B2 (en) 2005-06-30 2014-07-07 Liquid filtering device

Publications (1)

Publication Number Publication Date
US20100224161A1 true US20100224161A1 (en) 2010-09-09

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US11/993,573 Abandoned US20100224161A1 (en) 2005-06-30 2006-06-22 Liquid Filtering Device
US14/324,595 Active 2027-09-16 US10456716B2 (en) 2005-06-30 2014-07-07 Liquid filtering device

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US14/324,595 Active 2027-09-16 US10456716B2 (en) 2005-06-30 2014-07-07 Liquid filtering device

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WO2007003517A2 (fr) 2007-01-11
US10456716B2 (en) 2019-10-29
EP1896155A2 (fr) 2008-03-12
US20140311965A1 (en) 2014-10-23
DE102006029108A1 (de) 2007-01-11
CN101257956B (zh) 2012-08-15
WO2007003517A3 (fr) 2007-04-19
PL1896155T3 (pl) 2012-11-30
DE102006029107A1 (de) 2007-01-11
DE202005010445U1 (de) 2006-11-16
DE102006029107B4 (de) 2017-08-24
CN101257956A (zh) 2008-09-03
EP1896155B1 (fr) 2012-06-13

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