EP1264082B1 - Liquid filter, especially oil filter - Google Patents

Liquid filter, especially oil filter Download PDF

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Publication number
EP1264082B1
EP1264082B1 EP01911399A EP01911399A EP1264082B1 EP 1264082 B1 EP1264082 B1 EP 1264082B1 EP 01911399 A EP01911399 A EP 01911399A EP 01911399 A EP01911399 A EP 01911399A EP 1264082 B1 EP1264082 B1 EP 1264082B1
Authority
EP
European Patent Office
Prior art keywords
filter
flange
liquid
filter housing
space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01911399A
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German (de)
French (fr)
Other versions
EP1264082A2 (en
Inventor
Peter Baumann
Thomas Brieden
Hans Gebert
Markus Layer
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
Mahle Filtersysteme 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 Mahle Filtersysteme GmbH filed Critical Mahle Filtersysteme GmbH
Publication of EP1264082A2 publication Critical patent/EP1264082A2/en
Application granted granted Critical
Publication of EP1264082B1 publication Critical patent/EP1264082B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F01M2011/031Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means
    • F01M2011/033Mounting 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

Definitions

  • the invention relates to a liquid filter, in particular Oil filter for cleaning lubricating oil, in particular for internal combustion engines of motor vehicles, with the characteristics of Preamble of claim 1.
  • Such a liquid filter is known from EP 0 816 645 Al known and has in its interior a ring filter insert, there is a clean side of a raw side separates.
  • the fluid filter also has a filter housing made of metal, which has a flange with which the Liquid filter by means of a screw connection to a component, e.g. on an engine block of an internal combustion engine, screwed on is, this component is an inlet for unpurified Liquid, a drain for purified liquid and has a relatively depressurized idle.
  • the Flange has an axially acting outer seal, the inlet, Sequence and idle borders.
  • flange On the flange are a for Inlet open supply room, an outlet area open to the drain and an idle space open to idle, wherein the individual rooms with axially acting inner seals sealed against each other.
  • the gland with which the flange is screwed to the component, acts axially and presses the axially acting seals, so the outer seals and the inner seals axially to the component.
  • a liquid filter which one received in a filter housing made of plastic Ring filter insert, a raw liquid feeding inlet channel and a clean liquid discharge return channel having.
  • the inlet channel and the return channel are in one Collection space of the filter housing arranged and this Collection space is one of the inlet channel and the return channel radially encompassing, integral with the filter housing trained safety wall is limited.
  • the filter housing must be tightly attached to a component that has a feeder for uncleaned oil and a discharge for purified Owns oil.
  • the filter housing on the engine block attached to the internal combustion engine.
  • this component can cause problems because in the inlet and in the process prevail relatively high pressures.
  • the filter housing by virtue of Special installation conditions may sometimes be required be, the filter housing by means of axially acting seals seal against the engine block.
  • a filter housing made of plastic then has the disadvantage that the required contact forces with which the filter housing is braced with the engine block, not in the plastic housing can be initiated.
  • an oil filter is known whose Filter housing in an upper portion of a filter receiving space to accommodate a ring filter insert contains and in a lower portion of an inlet channel for unpurified Has oil and an outlet channel for purified oil.
  • the filter housing with the channels integrated therein is usually one-piece injection molded metal produced. In this way, the required preload forces and pressing forces introduced into the metal housing be sufficient for axially acting seals To achieve sealing effect.
  • smooth surfaces for seals, e.g. for the internal channels train is one careful post-processing of the injection molded component required. When machining the metal housing It can cause cavities due to porosities and voids come, in turn, an elaborate post-processing of Require component.
  • the present invention deals with the problem for a liquid filter of the type mentioned a Specify embodiment, the use of axially acting Seals allows and thereby relatively inexpensive to produce is.
  • the invention is based on the general idea, at least a part of those components of the filter housing, the in a conventional filter housing with this one-piece are manufactured and reworked to fulfill their functions must be in a separately producible function carrier insert summarize and the axial seal opposite the component to which the filter housing is sealed is to be attached, via a screw of the filter housing to realize with the component.
  • the Function carrier insert also be prepared so that a Post-processing can be omitted.
  • the function carrier insert made of plastic, in particular by means of a Injection molding process produced.
  • the thereby forming Surface quality is sufficiently high, so a däß Post processing can be omitted on a regular basis.
  • the filter housing made of metal has sufficient strength, to produce a sufficient axial tension, one axial axial sufficient for the seals. Pressing force causes. Overall, a special results inexpensive producible liquid filter.
  • a liquid filter 1 the here as an oil filter for cleaning lubricating oil of an internal combustion engine a motor vehicle is formed, a filter housing 2 on.
  • the filter housing 2 is made of metal, in particular. made of light metal, e.g. Cast aluminum or die-cast aluminum, educated.
  • a first flange. 3 formed, with which the liquid filter 1 at a not represented component, e.g. on the engine block of a motor vehicle, can be screwed.
  • a second flange 4 with which a filter chamber approach 5 is attached to the filter housing 2.
  • This filter chamber approach 5 is facing away from the filter housing 2 at its Top closed with a lid 6. Internally the filter chamber approach 5 is not shown here Ring filter insert arranged inside the Liquid filter 1 a clean side of a raw side separates.
  • the filter chamber approach 5 is here made of a plastic, e.g. as injection molded component.
  • the lid 6 may be made of a plastic.
  • the second flange 4 is - as well as the filter chamber connection 5 - substantially cylindrical formed and has one of the filter housing 2 axially projecting cylindrical wall 7 on.
  • On this wall 7 are axially projecting projections 8 formed on their axially free ends radially outwardly projecting elevations 9 have.
  • these elevations 9 are in the two central projections 8 to the viewer of FIG. 1 out from the filter housing 2 from. Between adjacent protrusions 8 gaps 10 are formed.
  • radial protruding projections 12 are formed, each in a the aforementioned gaps 10 between the projections 8 of the Filter housing 2 engage.
  • the projections 12 of the filter chamber approach 5 have at their, the filter housing 2 facing, 1 lower side radially outwardly projecting Surveys 13 on.
  • annular clamping element 14 is provided, that in the region of the projections 8 and 12 the second Flange 4 includes, in which case the elevations 9 of the projections 8 of the filter housing 2, the clamping element 14 from above radially overlap, while the elevations 13 of the projections 12 of the Filter chamber approach 5, the clamping element 14 from below radially spread. This results in an effective fixation and fuse for the filter chamber approach 5 on the filter housing Second
  • each an additional survey 15 which also radially outwardly from the Projections 12 protrudes while maintaining the level of the surveys 9 of the projections 8 of the filter housing 2 is arranged.
  • the clamping element 14th consists of e.g. from an open spring steel ring.
  • the filter housing 2 also has a lower side third flange 16, via which a heat exchanger 17th or “cooler” is connected to the filter housing 2.
  • this heat exchanger 17 of the so-called “donut type” and does not have one here visible central passage opening and is via a central Befest Trentsschraübe 18 screwed to the filter housing 2, wherein a lid 19, the central opening of the heat exchanger 17 tightly closes.
  • a first sensor 20 e.g. a temperature sensor
  • a second sensor 21 e.g. one Pressure sensor
  • a carrier receiving space 22 is formed in the according to FIG. 3rd a function carrier insert 23 can be used inside the first flange 3 .
  • the first Flange 3 is provided with an axially acting outer seal 24 equipped, the carrier receiving space 22 and thus the Inserted therein used function carrier insert 23.
  • the function carrier insert 23 has an inlet space 25, which communicates with a feed for unpurified liquid, which is arranged on the component, not shown, to the liquid filter 1 is attached. Also owns the function carrier insert 23 a drain space 26, with a drain for purified liquid in the aforementioned component communicated. In addition, the function carrier insert contains 23 an idle space 27, with an idle of the Component communicates. Such idling leads to a formed by the engine block of an internal combustion engine Component regularly to the oil pan, causing the idle relative is depressurized.
  • the individual rooms 25,26,27 are with axially acting inner seals 28 sealed against each other.
  • the seals 28 and 24 may be formed as individual elements, However, preferred is an embodiment in which the Outer seal 24 and the inner seals 28 by a one-piece Seal body are formed.
  • the function carrier use 23 adapted for this purpose to the carrier receiving space 22 is that the function carrier insert 23 inside the first Flange 3 and the filter housing 2 is supported.
  • the function carrier insert 23 is here made of plastic, e.g. as an injection molded component, produced.
  • Preload is about the screw connection on the first Flange 3 achieved. This can be done easily, because the filter housing 2 is made of metal.
  • this receiving groove 29 in a preferred embodiment be formed so that on a wall 30 of the first flange 3 a to the function carrier insert 23 out open, in cross-section L-shaped, circumferential inner stage 31st is trained. It's also on the opposite side Wall 32 of the function carrier insert 23 a to the wall 30 of first flange 3 towards open, in cross section (mirrored) L-shaped circumferential outer step 33 is formed.
  • the exterior stage 33 of the function carrier insert 23 and the inner stage 31 of the first flange 3 complement each other in the sluggish.
  • Rajiraum 22 inserted function carrier insert 23 complementary to the receiving groove 29 which receives the outer seal 24.
  • This relatively complex embodiment allows an advantageous simplification of the production of Filter housing 2, because fine structures that are at a Arrangement of the groove 29 only result in the flange 3 and in the context of a metal casting only relatively expensive are realizable, are reduced.
  • the seal 24 is in the groove 29 is arranged so that a between function carrier insert 23 and flange 3 formed interface 34 is sealed.
  • the dimensioning of the wall 32 can preferably be chosen so that the wall 32 in the axial Direction over the wall 30 protrudes.
  • Fig. 3 is also for receiving the inner seals 28 each have a groove 35 is provided.
  • This groove 35 or this Grooves 35 are each facing to the component Ends of partitions 36 are formed, which are the individual rooms 25,26,27 in the function carrier insert 23 against each other.
  • a partition wall 36 formed in this way is at the first Flange 3 or on the filter housing 2 a to the component formed by the first flange 3 protruding rib 39, in particular formed in the double wall, that is between engages the individual walls 37 and the cross bar 38 at its supports the rear side facing away from the component.
  • an intense bias on the inner seal 28 are applied, wherein simultaneously settling the plastic of the function carrier insert 23 is reduced become.
  • the drain space 26 of the function carrier insert 23 a drain opening 40, which with the Pure side in the interior of the liquid filter 1 communicates.
  • a clean-side outlet connection 42 protrudes the interior of the filter housing 2, which at the filter chamber approach 5 is formed.
  • the drainage room has 26 a further opening 41, with one in the filter housing 2 trained auxiliary channel 43 communicates, the in turn, with the sensor terminals of the sensors 20 and 21 connected is.
  • the inlet space 25 of the function carrier insert 23 communicates via an inlet opening 44 (see Fig. 3) with an im Inside the filter housing 2 formed inlet channel 45th (see Fig. 2).
  • the idle space 27 of the radio carrier insert 23 is according to Fig. 3 formed broken through and has a plurality of openings 46 on, via the idle space 27 with a filter housing 2 enveloped interior 47 of the filter housing 2 connected is.
  • a pressure control valve 48 On the interior 47 of the filter housing 2 facing Rear of the function carrier insert 23 is a pressure control valve 48 arranged. The position of this pressure control valve 48 is in Fig. 2 for clarity without the function carrier insert 23 reproduced.
  • This pressure control valve 48 consists essentially of a cylindrical sleeve 49, which includes at least one radial opening 50. Internally the sleeve 49 is a control piston 51 (see Fig. 2) axially adjustable.
  • This control piston 51 is by means of a Spring 52 formed against a inside of the sleeve 49 Piston seat 53 preloaded.
  • the spring 52 is supported here. on the one hand on the control piston 51 and on the other hand on a Support disc 55, which in the sleeve 49, e.g. by crimping is held.
  • the sleeve 49 also has an axial ⁇ ffhung 54th
  • the pressure control valve 48 is on Function carrier insert 23 supported, what this according to FIG. 4 on its back holding elements 56, which the Include sleeve at least partially on its outer side.
  • the the opening 54 containing end of the sleeve 49 is over a Seal 57 at a corresponding, on the function carrier insert 23 trained sealing surface supported.
  • the opposite End of the sleeve 49 is in the assembled state inside 47 of the filter housing 2 at a corresponding seat 58 supported on the filter housing 2.
  • the axial opening 54 communicates with the drainage space 26, while the controlled by the control piston 51 radial Opening 50 with the idle space 27 and / or with the interior 47 of the filter housing 2 communicates. Because the interior 47 and the idle space 27 via the openings 46 with each other communicate, prevails in these rooms 27,47 the pressure of Idling, so regularly about atmospheric pressure. In contrast, prevails in the drainage chamber 26 an elevated Pressure, namely about the delivery pressure of a not here illustrated pump, e.g. an oil pump of a lubricating oil circuit.
  • the pressure regulating valve 48 is set so that the Control piston 51, the radial opening 50 from an upper Boundary pressure (control pressure) releases, so that a corresponding Pressure reduction via the idle space 27 and the interior 47th can be done.
  • the arrangement of this pressure control valve 48 in Drainage chamber 26 has the advantage that the component supplied Fluid pressure is regulated, reducing the risk of damage of the component is reduced by a false fluid pressure is.
  • Fig. 7 is in the interior of the filter housing 2 a cylindrical connecting piece 59 is formed, with the Cold side of the heat exchanger 17 communicates.
  • This connection piece 59 is a seat 60 which is open on one side formed on which a trained as a separable component Disc can be supported, which designated 61 in Fig. 9 is and has an internal thread that with a External thread of the central screw 18 of the heat exchanger 17th interacts. In this way, the heat exchanger 17 is on Filter housing 2 screwed on without the filter housing 2 a thread must be formed.
  • the third flange 16 is substantially is cylindrical or circular and is by means of a corresponding, axially acting seal 62, the here shown only with broken lines is sealed off from the heat exchanger 17.
  • This seal 62 includes the third flange 16 associated with the end the inlet channel 45, with respect to a center of the third Flange 16 is disposed radially outward.
  • This inlet channel 45 communicates with a correspondingly radially arranged outside not shown inlet of the heat exchanger 17, with its warm side.
  • Centric with respect to the third Flange 16 is the third flange 16 associated End of the connecting piece 59 arranged there with a also not shown outlet of the heat exchanger 17, so communicates with the cold side.
  • Concentric to third flange 16 may in a development guide means, e.g. Ribs, be formed on the filter housing 2, which cooperate with the assembly of the heat exchanger 17 with this and center it relative to the third flange 16.
  • Fig. 9 is on the side facing away from the lid 6 underside the filter chamber approach 5 an axially projecting, cylindrical inlet nozzle 63 is formed, with the in Fig. 7 illustrated connecting piece 59 of the filter housing. 2 cooperates in the manner of a plug connection.
  • a radially acting seal 64 is attached, with this connector is sealed.
  • Adjacent to the Inlet nozzle 63 is at the bottom of the filter chamber approach 5 of the outlet nozzle 42 is formed, the substantially protrudes radially from the filter chamber approach 5 (see. Fig. 2).
  • This drain pipe 42 acts with one of the drain chamber 26 assigned, at the back of the function carrier insert 23 trained connecting piece 65 in the manner of a Plug connection together. It is clear that here too corresponding, radially acting sealing means are provided.
  • the connecting piece 65 of the discharge chamber 26 opens through the Drain port 40 in the drain chamber 26 (see Fig. 3).
  • connection piece 66th On the function carrier insert 23 is on its rear side as well a the supply chamber 25 associated connection piece 66th arranged, which is also cylindrical and extends parallel to the connecting piece 65 of the drain chamber 26.
  • This connection piece 66 acts in the manner of a Plug connection with a inside the filter housing. 2 trained connecting piece 67 together, at one end of the inlet channel 45 is formed. Also the connection piece 66 carries a radially acting seal 68. Inside the connecting piece 66 is a return valve 69 arranged, the only one flow from the connecting piece 66 in the connecting piece 67 allows while a Return flow is blocked.
  • the connecting piece 66 opens via the inlet opening 44 in the inlet space 25th
  • auxiliary connecting piece 70 formed, which is parallel to the other neck 65 and 66 extends and is cylindrical. Also this auxiliary connecting piece 70 carries a radial seal 71 and acts like a plug connection with a Auxiliary connecting piece 72 together, at the end of the auxiliary channel 43 is formed.
  • the auxiliary connecting piece 70 opens via the opening 41 in the drainage chamber 26th
  • the fluid flow of the liquid filter 1 works as follows:
  • the fluid guide thus takes place with respect to the interior 47 the filter housing 2 is always sealed.
  • the filter housing 2 In case of a Leakage inside the filter housing 2 would be unilateral or pure-side liquid always in the relatively depressurized Interior 47 escape, via the openings 46 with the Leerlaufraum 27 and thus communicates with the idling of the component.
  • the structure of the liquid filter 1 according to the invention chosen so that for connections, which are sealed axially always have a screw connection between metal parts is possible. In this way, the plastic components only exposed to such stresses by these materials can be readily recorded.
  • the attachment the filter chamber approach 5 provided connection the filter housing 2 by means of the second flange 4 must not absorb high forces, since the interior 47 of the filter housing 2 is depressurized and there in the range of the connector between inlet nozzle 63 and connecting piece 59 only relatively low, axially acting forces on the filter chamber approach. 5 act.

Abstract

The invention relates to a liquid filter (1), for example an oil filter for cleaning lubricating oil, especially for use in internal combustion engines of motor vehicles. A ring-shaped filter insert separates an unclean side from a clean side in the interior of the liquid filter. A metal filter housing (2) comprises a first flange (3) with which the liquid filter (1) can be screwed to a component via a screw connection, said component having an inlet for uncleaned liquid, an outlet for cleaned liquid and a relatively pressureless idle duct. The first flange (3) contains an axially acting outer seal (24) that includes inlet, outlet and idle duct, and a carrier receiving compartment (22) encircled by the outer seal (24). A functional carrier insert (23) is inserted in the carrier receiving compartment (22) and is provided with an inlet compartment (25) open towards the inlet, an outlet compartment (26) open towards the outlet, and a idle duct compartment (27) open towards the idle duct, the individual compartments being sealed from one another by axially acting inner seals (28). The screw connection with which the first flange (3) is screwed to the component acts in the axial direction and axially forces the axially acting seals against the component, while the functional carrier insert (23) rests on the first flange (3).

Description

Die Erfindung betrifft ein Flüssigkeitsfilter, insbesondere Ölfilter zum Reinigen von Schmieröl, insbesondere für Verbrennungsmotoren von Kraftfahrzeugen, mit den Merkmalen des Oberbegriffs des Anspruchs 1.The invention relates to a liquid filter, in particular Oil filter for cleaning lubricating oil, in particular for internal combustion engines of motor vehicles, with the characteristics of Preamble of claim 1.

Ein derartiges Flüssigkeitsfilter ist aus der EP 0 816 645 Al bekannt und besitzt in seinem Inneren einen Ringfiltereinsatz, der dort eine Reinseite von einer Rohseite trennt. Das Flüssigkeitsfilter besitzt außerdem ein Filtergehäuse aus Metall, das einen Flansch aufweist, mit dem das Flüssigkeitsfilter mittels einer Verschraubung an einem Bauteil, z.B. an einem Motorblock eines Verbrennungsmotors, angeschraubt ist, wobei dieses Bauteil einen Zulauf für ungereinigte Flüssigkeit, einen Ablauf für gereinigte Flüssigkeit und einen relativ drucklosen Leerlauf besitzt. Der Flansch weist eine axial wirkende Außendichtung auf, die Zulauf, Ablauf und Leerlauf einfasst. Am Flansch sind ein zum Zulauf offener Zulaufraum, ein zum Ablauf offener Ablaufraum sowie ein zum Leerlauf offener Leerlaufraum ausgebildet, wobei die einzelnen Räume mit axial wirkenden Innendichtungen gegeneinander abgedichtet sind. Die Verschraubung, mit welcher der Flansch am Bauteil angeschraubt ist, wirkt axial und presst die axial wirkenden Dichtungen, also die Außendichtungen und die Innendichtungen axial an das Bauteil.Such a liquid filter is known from EP 0 816 645 Al known and has in its interior a ring filter insert, there is a clean side of a raw side separates. The fluid filter also has a filter housing made of metal, which has a flange with which the Liquid filter by means of a screw connection to a component, e.g. on an engine block of an internal combustion engine, screwed on is, this component is an inlet for unpurified Liquid, a drain for purified liquid and has a relatively depressurized idle. Of the Flange has an axially acting outer seal, the inlet, Sequence and idle borders. On the flange are a for Inlet open supply room, an outlet area open to the drain and an idle space open to idle, wherein the individual rooms with axially acting inner seals sealed against each other. The gland, with which the flange is screwed to the component, acts axially and presses the axially acting seals, so the outer seals and the inner seals axially to the component.

Die DE 42 42 997 C1 zeigt ein Ölfilter, dessen Filtergehäuse über eine Dichtplatte an einem Motorblock angeflanscht ist. Dementsprechend ist diese Dichtplatte zwischen einem Flansch des Filtergehäuses und dem Motorblock angeordnet. An der vom Filtergehäuse abgewandten Seite kann an der Dichtplatte außerdem ein Wärmetauscher angebracht sein, der bei am Motorblock angebrachter Dichtplatte in einen entsprechenden, im Motorblock ausgebildeten Aufnahmeraum hineinragt.DE 42 42 997 C1 shows an oil filter, the filter housing is flanged to a motor block via a sealing plate. Accordingly, this sealing plate is between a flange the filter housing and the engine block arranged. At the of Filter housing facing away from the seal plate can also a heat exchanger attached to the engine block attached sealing plate in a corresponding, in Engaged engine block trained receiving space.

Aus der EP 0 750 099 A2 und der DE 197 41 449 Al sind weitere Flüssigkeitsfilter bekannt, deren Gehäuse mit einem Flansch an einem Motorblock einer Brennkraftmaschine anschraubbar sind.From EP 0 750 099 A2 and DE 197 41 449 Al are further Liquid filter known, the housing with a Flange screwed to an engine block of an internal combustion engine are.

Aus der WO 99/39 802 ist ein Flüssigkeitsfilter bekannt, das einen in einem Filtergehäuse aus Kunststoff aufgenommenen Ringfiltereinsatz, einen Rohflüssigkeit zuführenden Zulaufkanal und einen Reinflüssigkeit abführenden Rücklaufkanal aufweist. Der Zulaufkanal und der Rücklaufkanal sind in einem Auffangraum des Filtergehäuses angeordnet und dieser Auffangraum ist von einer den Zulaufkanal und den Rücklaufkanal radial umgreifenden, einteilig mit dem Filtergehäuse ausgebildeten Sicherheitswandung begrenzt. Das Filtergehäuse muß dicht an einem Bauteil befestigt werden, das eine Zuführung für ungereinigtes Öl und eine Abführung für gereinigtes Öl besitzt. Üblicherweise wird das Filtergehäuse am Motorblock des Verbrennungsmotors befestigt. Bei einer abgedichteten Befestigung eines Filtergehäuses aus Kunststoff an diesem Bauteil können jedoch Probleme entstehen, da im Zulauf und im Ablauf relativ hohe Drücke herrschen. Aufgrund besonderer Einbaubedingungen kann es zuweilen erforderlich sein, das Filtergehäuse mittels axial wirkender Dichtungen gegenüber dem Motorblock abzudichten. Bei einem Filtergehäuse aus Kunststoff besteht dann der Nachteil, daß die dazu erforderlichen Anpresskräfte, mit denen das Filtergehäuse mit dem Motorblock verspannt wird, nicht in das Kunststoffgehäuse eingeleitet werden können.From WO 99/39 802 a liquid filter is known which one received in a filter housing made of plastic Ring filter insert, a raw liquid feeding inlet channel and a clean liquid discharge return channel having. The inlet channel and the return channel are in one Collection space of the filter housing arranged and this Collection space is one of the inlet channel and the return channel radially encompassing, integral with the filter housing trained safety wall is limited. The filter housing must be tightly attached to a component that has a feeder for uncleaned oil and a discharge for purified Owns oil. Usually, the filter housing on the engine block attached to the internal combustion engine. In a sealed Attachment of a filter housing made of plastic However, this component can cause problems because in the inlet and in the process prevail relatively high pressures. by virtue of Special installation conditions may sometimes be required be, the filter housing by means of axially acting seals seal against the engine block. In a filter housing made of plastic then has the disadvantage that the required contact forces with which the filter housing is braced with the engine block, not in the plastic housing can be initiated.

Aus der DE 39 03 675 C2 ist ein Ölfilter bekannt, dessen Filtergehäuse in einem oberen Abschnitt einen Filteraufnahmeraum zur Unterbringung eines Ringfiltereinsatzes enthält und in einem unteren Abschnitt einen Einlaßkanal für ungereinigtes Öl und einen Auslaßkanal für gereinigtes Öl besitzt. Das Filtergehäuse mit den darin integrierten Kanälen wird üblicherweise einteilig als Spritzgußbauteil aus Metall hergestellt. Auf diese Weise können die erforderlichen Vorspannkräfte und Anpreßkräfte in däs Metallgehäuse eingeleitet werden, um bei axial wirkenden Dichtungen eine hinreichende Dichtwirkung zu erzielen. Um jedoch im Inneren des so hergestellten Spritzgußgehäuses glatte Flächen für Dichtungen, z.B. für die internen Kanäle, auszubilden, ist eine sorgfältige Nachbearbeitung des Spritzgußbauteils erforderlich. Bei der spanabhebenden Bearbeitung des Metallgehäuses kann es aufgrund von Porositäten und Lunkern zu Kavitäten kommen, die ihrerseits eine aufwendige Nachbearbeitung des Bauteils erforderlich machen.From DE 39 03 675 C2, an oil filter is known whose Filter housing in an upper portion of a filter receiving space to accommodate a ring filter insert contains and in a lower portion of an inlet channel for unpurified Has oil and an outlet channel for purified oil. The filter housing with the channels integrated therein is usually one-piece injection molded metal produced. In this way, the required preload forces and pressing forces introduced into the metal housing be sufficient for axially acting seals To achieve sealing effect. However, inside the so manufactured injection-molded housing smooth surfaces for seals, e.g. for the internal channels, train is one careful post-processing of the injection molded component required. When machining the metal housing It can cause cavities due to porosities and voids come, in turn, an elaborate post-processing of Require component.

Die vorliegende Erfindung beschäftigt sich mit dem Problem, für ein Flüssigkeitsfilter der eingangs genannten Art eine Ausführungsform anzugeben, die die Verwendung axial wirkender Dichtungen ermöglicht und dabei relativ preiswert herstellbar ist.The present invention deals with the problem for a liquid filter of the type mentioned a Specify embodiment, the use of axially acting Seals allows and thereby relatively inexpensive to produce is.

Dieses Problem wird erfindungsgemäß durch ein Filter mit den Merkmalen des Anspruchs 1 gelöst.This problem is inventively through a filter with the Characteristics of claim 1 solved.

Die Erfindung beruht auf dem allgemeinen Gedanken, zumindest einen Teil derjenigen Bestandteile des Filtergehäuses, die bei einem herkömmlichen Filtergehäuse mit diesem einteilig hergestellt sind und zur Erfüllung ihrer Funktionen nachbearbeitet werden müssen, in einem separat herstellbaren Funktionsträgereinsatz zusammenzufassen und die axiale Abdichtung gegenüber dem Bauteil, an dem das Filtergehäuse dicht befestigt werden soll, über eine Verschraubung des Filtergehäuses mit dem Bauteil zu realisieren. Auf diese Weise ergibt sich einerseits die Möglichkeit einer externen Nachbearbeitung dieser Funktionselemente, andererseits kann der Funktionsträgereinsatz auch so hergestellt werden, daß eine Nachbearbeitung entfallen kann. Beispielsweise ist der Funktionsträgereinsatz aus Kunststoff, insbesondere mittels eines Spritzgußverfahrens hergestellt. Die sich dabei ausbildende Oberflächengüte ist hinreichend hochwertig, so däß eine Nachbearbeitung regelmäßig entfallen kann. Darüber hinaus verfügt das Filtergehäuse aus Metall über ausreichend Festigkeit, um eine hinreichende axiale Verspannung zu erzeugen, die eine für die axialen Dichtungen ausreichende axiale. Anpreßkraft bewirkt. Insgesamt ergibt sich ein besonders preiswert herstellbares Flüssigkeitsfilter. The invention is based on the general idea, at least a part of those components of the filter housing, the in a conventional filter housing with this one-piece are manufactured and reworked to fulfill their functions must be in a separately producible function carrier insert summarize and the axial seal opposite the component to which the filter housing is sealed is to be attached, via a screw of the filter housing to realize with the component. In this way results On the one hand the possibility of an external post-processing these functional elements, on the other hand, the Function carrier insert also be prepared so that a Post-processing can be omitted. For example, the function carrier insert made of plastic, in particular by means of a Injection molding process produced. The thereby forming Surface quality is sufficiently high, so a däß Post processing can be omitted on a regular basis. Furthermore the filter housing made of metal has sufficient strength, to produce a sufficient axial tension, one axial axial sufficient for the seals. Pressing force causes. Overall, a special results inexpensive producible liquid filter.

Weitere wichtige Merkmale und Vorteile der erfindungsgemäßen Vorrichtung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention Device emerge from the subclaims, from the Drawings and from the associated description of the figures the drawings.

Ein bevorzugtes Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird in der nachfolgenden Beschreibung näher erläutert.A preferred embodiment of the invention is in the Drawings are shown in the description below explained in more detail.

Es zeigen, jeweils schematisch,

Fig. 1
eine Seitenansicht auf ein erfindungsgemäßes Flüssigkeitsfilter in einem zusammengebauten Zustand,
Fig. 2
eine Ansicht entsprechend einem Pfeil II in Fig. 1 auf das Flüssigkeitsfilter gemäß Fig. 1 ohne Funktionsträgereinsatz,
Fig. 3
eine Ansicht wie in Fig. 2, jedoch mit Funktionsträgereinsatz,
Fig. 4
eine Rückansicht auf den Funktionsträgereinsatz gemäß Fig. 3,
Fig. 5
ein Detailschnitt gemäß einer Schnittlinie V in Fig. 3,
Fig. 6
ein Detailschnitt entsprechend einer Schnittlinie VI in Fig. 3,
Fig. 7
eine Ansicht von oben auf ein Filtergehäuse des Flüssigkeitsfilters aus Fig. 1,
Fig. 8
eine Ansicht von unten auf das Filtergehäuse gemäß Fig. 7 und
Fig. 9
eine Seitenansicht wie in Fig. 1, jedoch ohne das Filtergehäuse gemäß Fig. 7.
Show, in each case schematically,
Fig. 1
a side view of an inventive liquid filter in an assembled state,
Fig. 2
1 is a view corresponding to an arrow II in FIG. 1 of the liquid filter according to FIG. 1 without a functional carrier insert;
Fig. 3
a view as in Fig. 2, but with function carrier insert,
Fig. 4
a rear view of the function carrier insert according to FIG. 3,
Fig. 5
a detail section along a section line V in Fig. 3,
Fig. 6
a detail section along a section line VI in Fig. 3,
Fig. 7
a top view of a filter housing of the liquid filter of FIG. 1,
Fig. 8
a bottom view of the filter housing of FIG. 7 and
Fig. 9
a side view as in Fig. 1, but without the filter housing of FIG. 7.

Entsprechend Fig. 1 weist ein Flüssigkeitsfilter 1, das hier als Ölfilter zum Reinigen von Schmieröl eines Verbrennungsmotors eines Kraftfahrzeuges ausgebildet ist, ein Filtergehäuse 2 auf. Das Filtergehäuse 2 wird aus Metall, insbesondere. aus Leichtmetall, z.B. Aluminiumguß oder Aluminiumdruckguß, ausgebildet. An der gemäß Fig. 1 rechten Seite des Filtergehäuses 2 ist am Filtergehäuse 2 ein erster Flansch 3 ausgebildet, mit dem das Flüssigkeitsfilter 1 an einem nicht dargestellten Bauteil, z.B. am Motorblock eines Kraftfahrzeuges, anschraubbar ist. An seiner Oberseite besitzt das Filtergehäuse 2 einen zweiten Flansch 4, mit dem ein Filterkammeransatz 5 am Filtergehäuse 2 befestigt ist. Dieser Filterkammeransatz 5 ist an seiner vom Filtergehäuse 2 abgewandten Oberseite mit einem Deckel 6 verschlossen. Im Inneren des Filterkammeransatzes 5 ist ein hier nicht dargestellter Ringfiltereinsatz angeordnet, der im Inneren des Flüssigkeitsfilters 1 eine Reinseite von einer Rohseite trennt. Der Filterkammeransatz 5 ist hier aus einem Kunststoff, z.B. als Spritzgußbauteil, hergestellt. Ebenso kann der Deckel 6 aus einem Kunststoff hergestellt sein.According to Fig. 1, a liquid filter 1, the here as an oil filter for cleaning lubricating oil of an internal combustion engine a motor vehicle is formed, a filter housing 2 on. The filter housing 2 is made of metal, in particular. made of light metal, e.g. Cast aluminum or die-cast aluminum, educated. At the in Fig. 1 right side of Filter housing 2 is on the filter housing 2, a first flange. 3 formed, with which the liquid filter 1 at a not represented component, e.g. on the engine block of a motor vehicle, can be screwed. At its top has the Filter housing 2, a second flange 4, with which a filter chamber approach 5 is attached to the filter housing 2. This filter chamber approach 5 is facing away from the filter housing 2 at its Top closed with a lid 6. Internally the filter chamber approach 5 is not shown here Ring filter insert arranged inside the Liquid filter 1 a clean side of a raw side separates. The filter chamber approach 5 is here made of a plastic, e.g. as injection molded component. Likewise the lid 6 may be made of a plastic.

Die Fixierung des Filterkammeransatzes 5 am Filtergehäuse 2 erfolgt auf eine besondere Weise: Der zweite Flansch 4 ist - wie auch der Filterkammeranschluß 5 - im wesentlichen zylindrisch ausgebildet und weist eine vom Filtergehäuse 2 axial vorstehende zylindrische Wand 7 auf. An dieser Wand 7 sind axial vorstehende Vorsprünge 8 ausgebildet, die an ihren axial freien Enden radial nach außen vorstehende Erhebungen 9 aufweisen. In Fig. 1 stehen diese Erhebungen 9 bei den beiden mittleren Vorsprüngen 8 zum Betrachter der Fig. 1 hin vom Filtergehäuse 2 ab. Zwischen benachbarten Vorsprüngen 8 sind Lücken 10 ausgebildet.The fixation of the filter chamber approach 5 on the filter housing. 2 takes place in a special way: the second flange 4 is - as well as the filter chamber connection 5 - substantially cylindrical formed and has one of the filter housing 2 axially projecting cylindrical wall 7 on. On this wall 7 are axially projecting projections 8 formed on their axially free ends radially outwardly projecting elevations 9 have. In Fig. 1, these elevations 9 are in the two central projections 8 to the viewer of FIG. 1 out from the filter housing 2 from. Between adjacent protrusions 8 gaps 10 are formed.

An einem mit dem zweiten Flansch 4 zusammenwirkenden zylindrischen Abschnitt 11 des Filterkammeransatzes 5 sind radial vorstehende Vorsprünge 12 ausgebildet, die jeweils in eine der vorgenannten Lücken 10 zwischen den Vorsprüngen 8 des Filtergehäuses 2 eingreifen. Die Vorsprünge 12 des Filterkammeransatzes 5 weisen an ihrer, dem Filtergehäuse 2 zugewandten, gemäß Fig. 1 unteren Seite radial nach außen vorstehende Erhebungen 13 auf. At a cooperating with the second flange 4 cylindrical Section 11 of the filter chamber approach 5 are radial protruding projections 12 are formed, each in a the aforementioned gaps 10 between the projections 8 of the Filter housing 2 engage. The projections 12 of the filter chamber approach 5 have at their, the filter housing 2 facing, 1 lower side radially outwardly projecting Surveys 13 on.

Des weiteren ist ein ringförmiges Spannelement 14 vorgesehen, das im Bereich der Vorsprünge 8 und 12 den zweiten Flansch 4 umfaßt, wobei dann die Erhebungen 9 der Vorsprünge 8 des Filtergehäuses 2 das Spannelement 14 von oben radial übergreifen, während die Erhebungen 13 der Vorsprünge 12 des Filterkammeransatzes 5 das Spannelement 14 von unten radial übergreifen. Auf diese Weise ergibt sich eine effektive Fixierung und Sicherung für den Filterkammeransatz 5 am Filtergehäuse 2.Furthermore, an annular clamping element 14 is provided, that in the region of the projections 8 and 12 the second Flange 4 includes, in which case the elevations 9 of the projections 8 of the filter housing 2, the clamping element 14 from above radially overlap, while the elevations 13 of the projections 12 of the Filter chamber approach 5, the clamping element 14 from below radially spread. This results in an effective fixation and fuse for the filter chamber approach 5 on the filter housing Second

Im vorliegenden Ausführungsbeispiel ist an den Vorsprüngen 12 des Filterkammeransatzes 5 jeweils eine zusätzliche Erhebung 15 ausgebildet, die ebenfalls radial nach außen von den Vorsprüngen 12 absteht und dabei auf dem Niveau der Erhebungen 9 der Vorsprünge 8 des Filtergehäuses 2 angeordnet ist. Auf diese Weise ergibt sich eine zusätzliche Fixierung des Spannelements 14 am zweiten Flansch 4. Das Spannelement 14 besteht z.B. aus einem offenen Federstahlring.In the present embodiment is on the projections 12 of the filter chamber approach 5 each an additional survey 15, which also radially outwardly from the Projections 12 protrudes while maintaining the level of the surveys 9 of the projections 8 of the filter housing 2 is arranged. In this way, there is an additional fixation of Clamping element 14 on the second flange 4. The clamping element 14th consists of e.g. from an open spring steel ring.

Das Filtergehäuse 2 weist an seiner Unterseite außerdem einen dritten Flansch 16 auf, über den ein Wärmetauscher 17 oder "Kühler" an das Filtergehäuse 2 angeschlossen ist. Im dargestellten Ausführungsbeispiel ist dieser Wärmetauscher 17 vom sogenannten "Donut-Typ" und besitzt eine hier nicht sichtbare zentrale Durchgangsöffnung und wird über eine zentrale Befestigungsschraübe 18 am Filtergehäuse 2 angeschraubt, wobei ein Deckel 19 die zentrale Öffnung des Wärmetauschers 17 dicht verschließt. The filter housing 2 also has a lower side third flange 16, via which a heat exchanger 17th or "cooler" is connected to the filter housing 2. in the illustrated embodiment, this heat exchanger 17 of the so-called "donut type" and does not have one here visible central passage opening and is via a central Befestigungsschraübe 18 screwed to the filter housing 2, wherein a lid 19, the central opening of the heat exchanger 17 tightly closes.

Auf der dem Betrachter zugewandten Seite kann das Filtergehäuse 2 außerdem mit einem ersten Sensor 20, z.B. ein Temperatursensor, sowie mit einem zweiten Sensor 21, z.B. ein Drucksensor, ausgestattet sein, wozu am Filtergehäuse 2 entsprechende Sensoranschlüsse ausgebildet sind.On the viewer side facing the filter housing 2 also with a first sensor 20, e.g. a temperature sensor, and with a second sensor 21, e.g. one Pressure sensor, be equipped, including on the filter housing 2 corresponding Sensor connections are formed.

Entsprechend Fig. 2 ist im Inneren des ersten Flansches 3 ein Trägeraufnahmeraum 22 ausgebildet, in den gemäß Fig. 3 ein Funktionsträgereinsatz 23 einsetzbar ist. Der erste Flansch 3 ist mit einer axial wirkenden Außendichtung 24 ausgestattet, die den Trägeraufnahmeraum 22 und somit den darin eingesetzten Funktionsträgereinsatz 23 einfaßt.According to FIG. 2, inside the first flange 3 a carrier receiving space 22 is formed in the according to FIG. 3rd a function carrier insert 23 can be used. The first Flange 3 is provided with an axially acting outer seal 24 equipped, the carrier receiving space 22 and thus the Inserted therein used function carrier insert 23.

Der Funktionsträgereinsatz 23 weist einen Zulaufraum 25 auf, der mit einem Zulauf für ungereinigte Flüssigkeit kommuniziert, der am nicht dargestellten Bauteil angeordnet ist, an dem das Flüssigkeitsfilter 1 befestigt ist. Außerdem besitzt der Funktionsträgereinsatz 23 einen Ablaufraum 26, der mit einem Ablauf für gereinigte Flüssigkeit im vorgenannten Bauteil kommuniziert. Außerdem enthält der Funktionsträgereinsatz 23 einen Leerlaufraum 27, der mit einem Leerlauf des Bauteils kommuniziert. Ein derartiger Leerlauf führt bei einem durch den Motorblock eines Verbrennungsmotors gebildeten Bauteil regelmäßig zur Ölwanne, wodurch der Leerlauf relativ drucklos ist.The function carrier insert 23 has an inlet space 25, which communicates with a feed for unpurified liquid, which is arranged on the component, not shown, to the liquid filter 1 is attached. Also owns the function carrier insert 23 a drain space 26, with a drain for purified liquid in the aforementioned component communicated. In addition, the function carrier insert contains 23 an idle space 27, with an idle of the Component communicates. Such idling leads to a formed by the engine block of an internal combustion engine Component regularly to the oil pan, causing the idle relative is depressurized.

Die einzelnen Räume 25,26,27 sind mit axial wirkenden Innendichtungen 28 gegeneinander abgedichtet. Die Dichtungen 28 und 24 können dabei als einzelne Elemente ausgebildet sein, bevorzugt wird jedoch eine Ausführungsform, bei denen die Außendichtung 24 und die Innendichtungen 28 durch einen einstückigen Dichtungskörper gebildet sind. Durch die Schraubbefestigung des ersten Flansches 3 am Bauteil bzw. Motorblock werden die Dichtungen 24 und 28 axial gegen das Bauteil angepreßt. Es ist klar, daß der Funktionsträgereinsatz 23 zu diesem Zweck so an den Trägeraufnahmeraum 22 angepaßt ist, daß sich der Funktionsträgereinsatz 23 innen am ersten Flansch 3 bzw. am Filtergehäuse 2 abstützt. Der Funktionsträgereinsatz 23 ist hier aus Kunststoff, z.B. als Spritzgußbauteil, hergestellt.The individual rooms 25,26,27 are with axially acting inner seals 28 sealed against each other. The seals 28 and 24 may be formed as individual elements, However, preferred is an embodiment in which the Outer seal 24 and the inner seals 28 by a one-piece Seal body are formed. By the screw fastening of the first flange 3 on the component or engine block the seals 24 and 28 are axially against the component pressed. It is clear that the function carrier use 23 adapted for this purpose to the carrier receiving space 22 is that the function carrier insert 23 inside the first Flange 3 and the filter housing 2 is supported. The function carrier insert 23 is here made of plastic, e.g. as an injection molded component, produced.

Die für die Erzielung einer ausreichenden Dichtwirkung erforderliche Vorspannung wird über die Verschraubung am ersten Flansch 3 erzielt. Dies kann hier problemlos erfolgen, da das Filtergehäuse 2 aus Metall hergestellt ist.The required for achieving a sufficient sealing effect Preload is about the screw connection on the first Flange 3 achieved. This can be done easily, because the filter housing 2 is made of metal.

Im ersten Flansch 3 ist zur Unterbringung der Außendichtung 24 eine geschlossen umlaufende Aufnahmenut 29 ausgebildet, in welche die Außendichtung 24 einsetzbar ist. Entsprechend Fig. 5 kann diese Aufnahmenut 29 bei einer bevorzugten Ausführungsform so ausgebildet werden, daß an einer Wand 30 des ersten Flansches 3 eine zum Funktionsträgereinsatz 23 hin offene, im Querschnitt L-förmige, umlaufende Innenstufe 31 ausgebildet ist. Außerdem ist an einer gegenüberliegenden Wand 32 des Funktionsträgereinsatzes 23 eine zur Wand 30 des ersten Flansches 3 hin offene, im Querschnitt (gespiegelt) L-förmige, umlaufende Außenstufe 33 ausgebildet. Die Außenstufe 33 des Funktionsträgereinsatzes 23 und die Innenstufe 31 des ersten Flansches 3 ergänzen sich bei in den Träge-. raufnahmeraum 22 eingesetztem Funktionsträgereinsatz 23 komplementär zur Aufnahmenut 29, die die Außendichtung 24 aufnimmt. Diese relativ aufwendige Ausgestaltungsform ermöglicht eine vorteilhafte Vereinfachung der Herstellung des Filtergehäuses 2, da feine Strukturen, die sich bei einer Anordnung der Nut 29 ausschließlich im Flansch 3 ergeben und im Rahmen einer Metallgußherstellung nur relativ aufwendig realisierbar sind, reduziert sind. Die Dichtung 24 ist in der Nut 29 so angeordnet, daß auch eine zwischen Funktionsträgereinsatz 23 und Flansch 3 ausgebildete Schnittstelle 34 abgedichtet ist. Die Dimensionierung der Wand 32 kann vorzugsweise so gewählt sein, daß die Wand 32 in axialer Richtung über die Wand 30 vorsteht. Durch diese Bauweise ergibt sich beim Anschrauben des ersten Flansches 3 am Bauteil eine axiale Vorspannung oder Verspannung des Funktionsträgereinsatzes 23.In the first flange 3 is to accommodate the outer seal 24 a closed circumferential receiving groove 29 is formed, in which the outer seal 24 is used. Corresponding Fig. 5, this receiving groove 29 in a preferred embodiment be formed so that on a wall 30 of the first flange 3 a to the function carrier insert 23 out open, in cross-section L-shaped, circumferential inner stage 31st is trained. It's also on the opposite side Wall 32 of the function carrier insert 23 a to the wall 30 of first flange 3 towards open, in cross section (mirrored) L-shaped circumferential outer step 33 is formed. The exterior stage 33 of the function carrier insert 23 and the inner stage 31 of the first flange 3 complement each other in the sluggish. Raufnahmeraum 22 inserted function carrier insert 23 complementary to the receiving groove 29 which receives the outer seal 24. This relatively complex embodiment allows an advantageous simplification of the production of Filter housing 2, because fine structures that are at a Arrangement of the groove 29 only result in the flange 3 and in the context of a metal casting only relatively expensive are realizable, are reduced. The seal 24 is in the groove 29 is arranged so that a between function carrier insert 23 and flange 3 formed interface 34 is sealed. The dimensioning of the wall 32 can preferably be chosen so that the wall 32 in the axial Direction over the wall 30 protrudes. By this construction results when screwing the first flange 3 on the component an axial bias or tension of the function carrier insert 23rd

Gemäß Fig. 3 ist auch für die Aufnahme der Innendichtungen 28 jeweils eine Nut 35 vorgesehen. Diese Nut 35 bzw. diese Nuten 35 sind dabei jeweils an den dem Bauteil zugewandten Enden von Trennwänden 36 ausgebildet, die die einzelnen Räume 25,26,27 im Funktionsträgereinsatz 23 gegeneinander abtrennen. Bei einer bevorzugten Ausführungsform sind diese Trennwände 36 gemäß Fig. 6 als Doppelwände ausgebildet, die jeweils zwei im wesentlichen parallel zueinander verlaufende Einzelwände 37 aufweisen. Diese Einzelwände 37 sind an ihren freien Enden durch einen Quersteg 38 miteinander verbunden, in dessen dem Bauteil zugewandter Vorderseite die Nut 35 zur Aufnahme der Innendichtung 28 ausgebildet ist. Im Bereich einer auf diese Weise ausgebildeten Trennwand 36 ist am ersten Flansch 3 bzw. am Filtergehäuse 2 eine zum Bauteil hin vom ersten Flansch 3 abstehende Rippe 39 ausgebildet, insbesondere angeformt, die in die Doppelwand, das heißt zwischen den Einzelwänden 37 eingreift und den Quersteg 38 an seiner dem Bauteil abgewandten Rückseite unterstützt. Auf diese Weise kann eine intensive Vorspannung auf die Innendichtung 28 aufgebracht werden, wobei gleichzeitig Setzerscheinungen des Kunststoffes des Funktionsträgereinsatzes 23 reduziert werden.According to Fig. 3 is also for receiving the inner seals 28 each have a groove 35 is provided. This groove 35 or this Grooves 35 are each facing to the component Ends of partitions 36 are formed, which are the individual rooms 25,26,27 in the function carrier insert 23 against each other. In a preferred embodiment, these are Partitions 36 shown in FIG. 6 formed as double walls, the two each substantially parallel to each other Have individual walls 37. These individual walls 37 are at their free ends connected by a crosspiece 38, in the component facing the front side of the groove 35 for Receiving the inner seal 28 is formed. In the area a partition wall 36 formed in this way is at the first Flange 3 or on the filter housing 2 a to the component formed by the first flange 3 protruding rib 39, in particular formed in the double wall, that is between engages the individual walls 37 and the cross bar 38 at its supports the rear side facing away from the component. To this Way, an intense bias on the inner seal 28 are applied, wherein simultaneously settling the plastic of the function carrier insert 23 is reduced become.

Entsprechend Fig. 3 weist der Ablaufraum 26 des Funktionsträgereinsatzes 23 eine Ablauföffnung 40 auf, die mit der Reinseite im Inneren des Flüssigkeitsfilters 1 kommuniziert. Dabei ragt gemäß Fig. 2 ein reinseitiger Ablaufstutzen 42 in das Innere des Filtergehäuses 2 ein, der am Filterkammeransatz 5 ausgebildet ist. Des weiteren besitzt der Ablaufraum 26 eine weitere Öffnung 41, die mit einem im Filtergehäuse 2 ausgebildeten Hilfskanal 43 kommuniziert, der seinerseits mit den Sensoranschlüssen der Sensoren 20 und 21 verbunden ist.According to Fig. 3, the drain space 26 of the function carrier insert 23 a drain opening 40, which with the Pure side in the interior of the liquid filter 1 communicates. In this case, according to FIG. 2, a clean-side outlet connection 42 protrudes the interior of the filter housing 2, which at the filter chamber approach 5 is formed. Furthermore, the drainage room has 26 a further opening 41, with one in the filter housing 2 trained auxiliary channel 43 communicates, the in turn, with the sensor terminals of the sensors 20 and 21 connected is.

Der Zulaufraum 25 des Funktionsträgereinsatzes 23 kommuniziert über eine Zulauföffnung 44 (vgl. Fig. 3) mit einem im Inneren des Filtergehäuses 2 ausgebildeten Zulaufkanal 45 (vgl. Fig. 2) . The inlet space 25 of the function carrier insert 23 communicates via an inlet opening 44 (see Fig. 3) with an im Inside the filter housing 2 formed inlet channel 45th (see Fig. 2).

Der Leerlaufraum 27 des Funkträgereinsatzes 23 ist gemäß Fig. 3 durchbrochen ausgebildet und weist mehrere Öffnungen 46 auf, über die der Leerlaufraum 27 mit einem vom Filtergehäuse 2 umhüllten Innenraum 47 des Filtergehäuses 2 verbunden ist.The idle space 27 of the radio carrier insert 23 is according to Fig. 3 formed broken through and has a plurality of openings 46 on, via the idle space 27 with a filter housing 2 enveloped interior 47 of the filter housing 2 connected is.

Auf der dem Innenraum 47 des filtergehäuses 2 zugewandten Rückseite des Funktionsträgereinsatzes 23 ist ein Druckregelventil 48 angeordnet. Die Position dieses Druckregelventils 48 ist in Fig. 2 zur Verdeutlichung ohne den Funktionsträgereinsatz 23 wiedergegeben. Dieses Druckregelventil 48 besteht im wesentlichen aus einer zylindrischen Hülse 49, die mindestens eine radiale Öffnung 50 enthält. Im Inneren der Hülse 49 ist ein Steuerkolben 51 (vgl. Fig. 2) axial verstellbar gelagert. Dieser Steuerkolben 51 ist mittels einer Feder 52 gegen einen im Inneren der Hülse 49 ausgebildeten Kolbensitz 53 vorgespannt. Die Feder 52 stützt sich hier. einerseits am Steuerkolben 51 und andererseits an einer Stützscheibe 55 ab, die in der Hülse 49, z.B. durch Bördelung gehalten ist. An dem den Kolbensitz 53 enthaltenden axialen Ende besitzt die Hülse 49 außerdem eine axiale Öffhung 54.On the interior 47 of the filter housing 2 facing Rear of the function carrier insert 23 is a pressure control valve 48 arranged. The position of this pressure control valve 48 is in Fig. 2 for clarity without the function carrier insert 23 reproduced. This pressure control valve 48 consists essentially of a cylindrical sleeve 49, which includes at least one radial opening 50. Internally the sleeve 49 is a control piston 51 (see Fig. 2) axially adjustable. This control piston 51 is by means of a Spring 52 formed against a inside of the sleeve 49 Piston seat 53 preloaded. The spring 52 is supported here. on the one hand on the control piston 51 and on the other hand on a Support disc 55, which in the sleeve 49, e.g. by crimping is held. At the piston seat 53 containing axial end, the sleeve 49 also has an axial Öffhung 54th

Im zusammengebauten Zustand ist das Druckregelventil 48 am Funktionsträgereinsatz 23 gehaltert, wozu dieser gemäß Fig. 4 an seiner Rückseite Halteelemente 56 aufweist, die die Hülse zumindest teilweise an ihrer Außenseite umfassen. Das die Öffnung 54 enthaltende Ende der Hülse 49 ist über eine Dichtung 57 an einer entsprechenden, am Funktionsträgereinsatz 23 ausgebildeten Dichtfläche abgestützt. Das entgegengesetzte Ende der Hülse 49 ist im Zusammenbauzustand im Inneren 47 des Filtergehäuses 2 an einem entsprechenden Sitz 58 am Filtergehäuse 2 abgestützt.In the assembled state, the pressure control valve 48 is on Function carrier insert 23 supported, what this according to FIG. 4 on its back holding elements 56, which the Include sleeve at least partially on its outer side. The the opening 54 containing end of the sleeve 49 is over a Seal 57 at a corresponding, on the function carrier insert 23 trained sealing surface supported. The opposite End of the sleeve 49 is in the assembled state inside 47 of the filter housing 2 at a corresponding seat 58 supported on the filter housing 2.

Die axiale Öffnung 54 kommuniziert mit dem Ablaufraum 26, während die durch den Steuerkolben 51 gesteuerte radiale Öffnung 50 mit dem Leerlaufraum 27 und/oder mit dem Innenraum 47 des Filtergehäuses 2 kommuniziert. Da der Innenraum 47 und der Leerlaufraum 27 über die Öffnungen 46 miteinander kommunizieren, herrscht in diesen Räumen 27,47 der Druck des Leerlaufs, also regelmäßig etwa atmosphärischer Umgebungsdruck. Im Unterschied dazu herrscht im Ablaufraum 26 ein erhöhter Druck, nämlich etwa der Förderdruck einer hier nicht dargestellten Pumpe, z.B. eine Ölpumpe eines Schmierölkreislaufes. Das Druckregelventil 48 ist so eingestellt, daß der Steuerkolben 51 die radiale Öffnung 50 ab einem oberen Grenzdruck (Regeldruck) freigibt, so daß ein entsprechender Druckabbau über den Leerlaufraum 27 bzw. den Innenraum 47 erfolgen kann. Die Anordnung dieses Druckregelventils 48 im Ablaufraum 26 hat den Vorteil, daß der dem Bauteil zugeführte Fluiddruck geregelt wird, wodurch die Gefahr von Beschädigungen des Bauteils durch einen falschen Fluiddruck reduziert ist.The axial opening 54 communicates with the drainage space 26, while the controlled by the control piston 51 radial Opening 50 with the idle space 27 and / or with the interior 47 of the filter housing 2 communicates. Because the interior 47 and the idle space 27 via the openings 46 with each other communicate, prevails in these rooms 27,47 the pressure of Idling, so regularly about atmospheric pressure. In contrast, prevails in the drainage chamber 26 an elevated Pressure, namely about the delivery pressure of a not here illustrated pump, e.g. an oil pump of a lubricating oil circuit. The pressure regulating valve 48 is set so that the Control piston 51, the radial opening 50 from an upper Boundary pressure (control pressure) releases, so that a corresponding Pressure reduction via the idle space 27 and the interior 47th can be done. The arrangement of this pressure control valve 48 in Drainage chamber 26 has the advantage that the component supplied Fluid pressure is regulated, reducing the risk of damage of the component is reduced by a false fluid pressure is.

Entsprechend Fig. 7 ist im Inneren des Filtergehäuses 2 ein zylindrischer Anschlußstutzen 59 ausgebildet, der mit der Kaltseite des Wärmetauschers 17 kommuniziert. Im Inneren dieses Anschlußstutzens 59 ist ein einseitig offener Sitz 60 ausgebildet, an dem eine als separierbares Bauelement ausgebildete Scheibe abstützbar ist, die in Fig. 9 mit 61 bezeichnet ist und ein Innengewinde aufweist, das mit einem Außengewinde der zentralen Schraube 18 des Wärmetauschers 17 zusammenwirkt. Auf diese Weise ist der Wärmetauscher 17 am Filtergehäuse 2 anschraubbar, ohne daß dazu am Filtergehäuse 2 ein Gewinde ausgebildet werden muß.According to Fig. 7 is in the interior of the filter housing 2 a cylindrical connecting piece 59 is formed, with the Cold side of the heat exchanger 17 communicates. Internally This connection piece 59 is a seat 60 which is open on one side formed on which a trained as a separable component Disc can be supported, which designated 61 in Fig. 9 is and has an internal thread that with a External thread of the central screw 18 of the heat exchanger 17th interacts. In this way, the heat exchanger 17 is on Filter housing 2 screwed on without the filter housing 2 a thread must be formed.

Entsprechend Fig. 8 ist auch der dritte Flansch 16 im wesentlichen zylindrisch oder kreisförmig ausgebildet und ist mittels einer entsprechenden, axial wirkenden Dichtung 62, die hier lediglich mit unterbrochenen Linien dargestellt ist, gegenüber dem Wärmetauscher 17 abgedichtet. Diese Dichtung 62 umfaßt das den dritten Flansch 16 zugeordnete Ende des Zulaufkanals 45, das bezüglich einem Zentrum des dritten Flansches 16 radial außen angeordnet ist. Dieser Zulaufkanal' 45 kommuniziert mit einem dementsprechend radial außen angeordneten, nicht dargestellten Eintritt des Wärmetauschers 17, also mit dessen Warmseite. Zentrisch bezüglich des dritten Flansches 16 ist das dem dritten Flansch 16 zugeordnete Ende des Anschlußstutzens 59 angeordnet, das dort mit einem ebenfalls nicht dargestellten Austritt des Wärmetauschers 17, also mit dessen Kaltseite kommuniziert. Konzentrisch zum dritten Flansch 16 können bei einer Weiterbildung Führungsmittel, z.B. Rippen, am Filtergehäuse 2 ausgebildet sein, die bei der Montage des Wärmetauschers 17 mit diesem zusammenwirken und diesen relativ zum dritten Flansch 16 zentrieren. According to Fig. 8 and the third flange 16 is substantially is cylindrical or circular and is by means of a corresponding, axially acting seal 62, the here shown only with broken lines is sealed off from the heat exchanger 17. This seal 62 includes the third flange 16 associated with the end the inlet channel 45, with respect to a center of the third Flange 16 is disposed radially outward. This inlet channel 45 communicates with a correspondingly radially arranged outside not shown inlet of the heat exchanger 17, with its warm side. Centric with respect to the third Flange 16 is the third flange 16 associated End of the connecting piece 59 arranged there with a also not shown outlet of the heat exchanger 17, so communicates with the cold side. Concentric to third flange 16 may in a development guide means, e.g. Ribs, be formed on the filter housing 2, which cooperate with the assembly of the heat exchanger 17 with this and center it relative to the third flange 16.

Entsprechend Fig. 9 ist an der vom Deckel 6 abgewandten Unterseite des Filterkammeransatzes 5 ein axial abstehender, zylindrischer Zulaufstutzen 63 ausgebildet, der mit dem in Fig. 7 dargestellten Anschlußstutzen 59 des Filtergehäuses 2 nach Art einer Steckverbindung zusammenwirkt. Am Zulaufstutzen 63 ist eine radial wirkende Dichtung 64 angebracht, mit der diese Steckverbindung abgedichtet ist. Benachbart zum Zulaufstutzen 63 ist an der Unterseite des Filterkammeransatzes 5 der Ablaufstutzen 42 ausgebildet, der im wesentlichen radial vom Filterkammeransatz 5 absteht (vgl. Fig. 2). Dieser Ablaufstutzen 42 wirkt mit einem der Ablaufkammer 26 zugeordneten, an der Rückseite des Funktionsträgereinsatzes 23 ausgebildeten Anschlußstutzen 65 nach Art einer Steckverbindung zusammen. Es ist klar, daß auch hier entsprechende, radial wirkende Dichtmittel vorgesehen sind. Der Anschlußstutzen 65 der Ablaufkammer 26 mündet über die Ablauföffnung 40 in der Ablaufkammer 26 (vgl. Fig. 3).According to Fig. 9 is on the side facing away from the lid 6 underside the filter chamber approach 5 an axially projecting, cylindrical inlet nozzle 63 is formed, with the in Fig. 7 illustrated connecting piece 59 of the filter housing. 2 cooperates in the manner of a plug connection. At the inlet nozzle 63, a radially acting seal 64 is attached, with this connector is sealed. Adjacent to the Inlet nozzle 63 is at the bottom of the filter chamber approach 5 of the outlet nozzle 42 is formed, the substantially protrudes radially from the filter chamber approach 5 (see. Fig. 2). This drain pipe 42 acts with one of the drain chamber 26 assigned, at the back of the function carrier insert 23 trained connecting piece 65 in the manner of a Plug connection together. It is clear that here too corresponding, radially acting sealing means are provided. The connecting piece 65 of the discharge chamber 26 opens through the Drain port 40 in the drain chamber 26 (see Fig. 3).

Am Funktionsträgereinsatz 23 ist an seiner Rückseite außerdem ein dem Zuläufraum 25 zugeordneter Verbindungsstutzen 66 angeordnet, der ebenfalls zylindrisch ausgebildet ist und sich parallel zum Anschlußstutzen 65 der Ablaufkammer 26 erstreckt. Dieser Verbindungsstutzen 66 wirkt nach Art einer Steckverbindung mit einem im Inneren des Filtergehäuses 2 ausgebildeten Anschlußstutzen 67 zusammen, der an einem Ende des Zulaufkanals 45 ausgebildet ist. Auch der Verbindungsstutzen 66 trägt eine radial wirkende Dichtung 68. Im Inneren des Verbindungsstutzens 66 ist ein Rücklaufsperrventil 69 angeordnet, das nur eine Durchströmung vom Verbindungsstutzen 66 in den Anschlußstutzen 67 ermöglicht, während eine Rückströmung gesperrt wird. Der Verbindungsstutzen 66 mündet über die Zulauföffnung 44 in den Zulaufraum 25.On the function carrier insert 23 is on its rear side as well a the supply chamber 25 associated connection piece 66th arranged, which is also cylindrical and extends parallel to the connecting piece 65 of the drain chamber 26. This connection piece 66 acts in the manner of a Plug connection with a inside the filter housing. 2 trained connecting piece 67 together, at one end of the inlet channel 45 is formed. Also the connection piece 66 carries a radially acting seal 68. Inside the connecting piece 66 is a return valve 69 arranged, the only one flow from the connecting piece 66 in the connecting piece 67 allows while a Return flow is blocked. The connecting piece 66 opens via the inlet opening 44 in the inlet space 25th

An der Rückseite des' Funktionsträgereinsatzes 23 ist, ebenfalls dem Ablaufraum 26 zugeordnet, ein Hilfsverbindungsstutzen 70 ausgebildet, der parallel zu den anderen Stutzen 65 und 66 verläuft und zylindrisch ausgebildet ist. Auch dieser Hilfsverbindungsstutzen 70 trägt eine radiale Dichtung 71 und wirkt nach Art einer Steckverbindung mit einem Hilfsanschlußstutzen 72 zusammen, der am Ende des Hilfskanals 43 ausgebildet ist. Der Hilfsverbindungsstutzen 70 mündet über die Öffnung 41 in den Ablaufraum 26.At the back of the 'function carrier insert 23 is also associated with the drainage chamber 26, an auxiliary connecting piece 70 formed, which is parallel to the other neck 65 and 66 extends and is cylindrical. Also this auxiliary connecting piece 70 carries a radial seal 71 and acts like a plug connection with a Auxiliary connecting piece 72 together, at the end of the auxiliary channel 43 is formed. The auxiliary connecting piece 70 opens via the opening 41 in the drainage chamber 26th

Durch die parallele Ausbildung der Stutzen 65, 66 und 70 sowie durch deren Ausgestaltung als Steckverbindungselemente, ergibt sich für den Funktionsträgereinsatz 23 eine besonders einfache.Montierbarkeit.Due to the parallel design of the nozzle 65, 66 and 70 as well by their configuration as plug connection elements, results for the function carrier insert 23 a particular einfache.Montierbarkeit.

Die Fluiddurchströmung des Flüssigkeitsfilters 1 funktioniert dabei wie folgt:The fluid flow of the liquid filter 1 works as follows:

Aus dem Zulauf des Bauteils dringt erwärmte und verunreinigte Flüssigkeit in den Zulaufraum 25 ein (Fig. 3). Vom Zulaufraum 25 tritt die Flüssigkeit über den Verbindungsstutzen 66 (Fig. 9) in den Zulaufkanal 45 ein (Fig. 2) . Vom Zulaufkanal 45 (Fig. 8) tritt die Flüssigkeit dann in die Warmseite des Wärmetauschers 17 ein. Im Wärmetauscher 17 erfolgt die Abkühlung der verunreinigten, rohseitigen Flüssigkeit. Durch den zentralen Austritt des Wärmetauschers 17 dringt die abgekühlte Flüssigkeit durch den Anschlußstutzen 59 (Fig. 8) in den Zulaufstutzen 63 (Fig. 9) des Filterkammeransatzes 5 ein. Im Inneren des Filterkammeransatzes 5 durchdringt die verunreinigte Flüssigkeit den Filtereinsatz und gelangt so auf die Reinseite des Filtergehäuses 1. Die nunmehr abgekühlte und gereinigte Flüssigkeit tritt durch den Ablaufstutzen 42 (Fig. 9) in den Ablaufraum 26 (Fig. 3) über und gelangt von diesem zum Ablauf des Bauteils. Über den Ablaufraum 26 gelangt die abgekühlte, gereinigte Flüssigkeit auch in den Hilfskanal 43, so daß über die Sensoren 20 und 21, z.B. die Flüssigkeitstemperatur und der Flüssigkeitsdruck detektiert werden können.From the inlet of the component penetrates heated and contaminated Liquid in the inlet space 25 (Fig. 3). From the Zulaufraum 25, the liquid passes over the connecting piece 66 (FIG. 9) into the inlet channel 45 (FIG. 2). From the inlet channel 45 (Figure 8), the liquid then enters the Warm side of the heat exchanger 17 a. In the heat exchanger 17 takes place the cooling of the contaminated, raw-side liquid. Through the central outlet of the heat exchanger 17th penetrates the cooled liquid through the connecting piece 59 (Fig. 8) in the inlet nozzle 63 (Fig. 9) of the filter chamber approach 5 on. Inside the filter chamber approach 5 The contaminated liquid penetrates the filter cartridge and thus reaches the clean side of the filter housing 1. Die now cooled and purified liquid passes through the outlet pipe 42 (Figure 9) into the drainage chamber 26 (Figure 3) over and passes from this to the expiration of the component. about the drain space 26 passes the cooled, purified liquid also in the auxiliary channel 43, so that the sensors 20 and 21, e.g. the liquid temperature and the liquid pressure can be detected.

Die Fluidführung erfolgt somit gegenüber dem Innenraum 47 des Filtergehäuses 2 stets abgedichtet. Im Falle einer Leckage im Inneren des Filtergehäuses 2 würde rohseitige oder reinseitige Flüssigkeit stets in den relativ drucklosen Innenraum 47 entweichen, der über die Öffnungen 46 mit dem Leerlaufraum 27 und somit mit dem Leerlauf des Bauteils kommuniziert.The fluid guide thus takes place with respect to the interior 47 the filter housing 2 is always sealed. In case of a Leakage inside the filter housing 2 would be unilateral or pure-side liquid always in the relatively depressurized Interior 47 escape, via the openings 46 with the Leerlaufraum 27 and thus communicates with the idling of the component.

Hierdurch ergibt sich auch besonders einfach die Möglichkeit, am Filterkammeransatz 5 eine in den Innenraum 47 einmündende Leerlauföffnung vorzusehen, die zum Entnehmen des Ringfiltereinsatzes geöffnet wird.This also makes it particularly easy to at the filter chamber 5 an opening into the interior 47 Provide idle opening, which for removing the Ring filter insert is opened.

Der Aufbau des erfindungsgemäßen Flüssigkeitsfilters 1 ist so gewählt, daß bei Verbindungen, die axial abgedichtet werden müssen, stets eine Verschraubung zwischen Metallteilen möglich ist. Auf diese Weise werden die Kunststoffbauteile nur solchen Belastungen ausgesetzt, die von diesen Materialien ohne weiteres aufgenommen werden können. Die zur Befestigung des Filterkammeransatzes 5 vorgesehene Anbindung an das Filtergehäuse 2 mittels des zweiten Flansches 4 muß keine hohen Kräfte aufnehmen, da der innenraum 47 des Filtergehäuses 2 drucklos ist und da im Bereich der Steckverbindung zwischen Zulaufstutzen 63 und Anschlußstutzen 59 nur relativ geringe, axial wirkende Kräfte auf den Filterkammeransatz 5 einwirken.The structure of the liquid filter 1 according to the invention chosen so that for connections, which are sealed axially always have a screw connection between metal parts is possible. In this way, the plastic components only exposed to such stresses by these materials can be readily recorded. The attachment the filter chamber approach 5 provided connection the filter housing 2 by means of the second flange 4 must not absorb high forces, since the interior 47 of the filter housing 2 is depressurized and there in the range of the connector between inlet nozzle 63 and connecting piece 59 only relatively low, axially acting forces on the filter chamber approach. 5 act.

Claims (18)

  1. A liquid filter, in particular an oil filter for cleaning lubricant oil, in particular for internal combustion engines in motor vehicles, having the following features:
    a ring filter insert is arranged in the interior of the liquid filter (1), where it separates a clean side from a crude side,
    the liquid filter (1) has a filter housing (2) made of metal, having a first flange (3) with which the liquid filter (1) is screwed onto a component by means of a screw connection, this component having a feeder for unclean liquid, an outlet for purified liquid and a relatively pressureless no-load space,
    the first flange (3) has an exterior gasket (24) which acts axially and encompasses the feeder, the outlet and the no-load space,
    in the first flange (3) there are a feeder space (25) which is open toward the feeder, an outlet space (26) which is open toward the outlet and a no-load space (27) which is open toward the no-load space of the component, the individual spaces (25, 26, 27) being sealed with respect to one another by internal gaskets (28) which act axially,
    the screw connection with which the first flange (3) is screwed onto the component, acts axially and presses the axially acting gaskets (24, 28) axially onto the component,
    characterized by the following features:
    the first flange (3) contains a carrier receiving space (22) which is encompassed by the exterior gasket (24)
    a function carrier insert (23) is inserted into the carrier receiving space (22),
    the function carrier insert (23) has the feeder space (25), the outlet space (26) and the no-load space (27),
    the function carrier insert (23) is supported on the first flange (3) when the first flange (3) is screwed onto the component.
  2. The liquid filter according to Claim 1,
    characterized in that
    the function carrier insert (23) is made of plastic.
  3. The liquid filter according to Claim 1 or 2,
    characterized in that
    the function carrier insert (23) has a non-return valve (69) by which the feeder space (25) is connected to the crude side of the liquid filter (1) such that a feed flow from the feed to the crude side is open, but a return flow from the crude side to the feed is blocked.
  4. The liquid filter according to one of the preceding claims,
    characterized in that
    the function carrier insert (23) has a pressure regulating valve (48) which connects the outlet space (26) to the no-load space (27) above a predetermined control pressure and/or to an interior space (47) of the filter housing (2) communicating with the no-load space.
  5. The liquid filter according to claim 4,
    characterized in that
    the pressure-regulating valve (48) has a cylindrical sleeve (49) in which a control piston (51) is mounted so that it is axially adjustable; the sleeve (49) contains at least one radial opening (50) communicating with the no-load space (27) and/or with the interior space (47); the sleeve (49) is open on at least one axial end and communicates with the outlet space (26); spring means (52) prestress the control piston (51) toward this axial end; the control piston (51) blocks the at least one radial opening (50) as a function of its axial position relative to the sleeve (49) or opens it more or less.
  6. The liquid filter according to one of the preceding claims,
    characterized in that
    the filter housing (2) has a second flange (4) with which a filter chamber shoulder (5) is mounted on the filter housing (2), whereby the filter chamber shoulder (5) contains the ring filter insert and is sealed with a cover (6) on a side facing away from the filter housing (2) and has in the interior of the filter housing (2) a crude-side feeder connection (63) and a clean-side outlet connection (42) on a side facing away from the cover (6).
  7. The liquid filter according to claim 6, characterized in that
    the filter chamber shoulder (5) is made of plastic.
  8. The liquid filter according to one of the preceding claims 6 oder 7,
    characterized in that
    the feeder connection (63) of the filter chamber shoulder projects axially away from an axial end of the filter chamber shoulder (5), whereby a pipe union (59) that is formed in the filter housing (2) cooperates with the feeder connection (63) of the filter chamber shoulder (5) in the manner of a plug connection, and sealing means (64) that act radially are provided.
  9. The liquid filter according to one of the preceding claims 6 to 8,
    characterized in that
    the outlet connection (42) of the filter chamber shoulder (5) projects radially on an axial end of the filter chamber shoulder (5), a pipe union (65) being provided on the outlet space (26) of the function carrier insert (23), cooperating with the outlet connection (42) of the filter chamber shoulder (5) in the manner of a plug connection, and sealing means that act radially are provided.
  10. The liquid filter according to one of the preceding claims 6 to 9,
    characterized in that
    the second flange (4) has a cylindrical wall (7) which projects axially away from the filter housing (2) and has axial projections (8) spaced a distance apart from one another by gaps (10) and having on their free axial ends elevations (9) which project outward radially;
    radial projections (12) are formed on a cylindrical section (11) of the filter chamber shoulder (5) which cooperates with the second flange (4), each projection engaging in one of the gaps (10) and having elevations (13) that project outward radially on the side facing the filter housing (2);
    a ring-shaped tension element (14) encompasses the second flange (4) in the area of the projections (8, 12), whereby the elevations (9) of the second flange (4) are located on a side of the tension element (14) which faces the filter chamber shoulder (5) and the elevations (13) of the filter chamber shoulder (5) are located on a side of the tension element (14) facing the filter housing (2) and are axially supported there.
  11. The liquid filter according to one of the preceding claims,
    characterized in that
    the first flange (3) has a peripheral receiving groove (29) to accommodate the peripheral exterior gasket (24), this receiving groove (29) being designed so that a peripheral inner step (31) having an L-shaped cross section and being open toward the function carrier insert (23) is formed on a wall (30) of the first flange (3), and a peripheral outer step (33) having an L-shaped cross section and being open toward the wall (30) of the first flange (3) is provided on a wall (32) of the function carrier insert (23), whereby the outer step (33) and the inner step (31) supplement one another and are complementary to the receiving groove (29) when the function carrier insert (23) is inserted into the carrier receiving space (22).
  12. The liquid filter according to one of the preceding claims,
    characterized in that
    the spaces (25, 26, 27) of the function carrier insert (23) are separated from one another by partitions (36) which have axially open grooves (35) on their ends which face the component, the interior gaskets (28) being inserted into these grooves, whereby at least one of the partitions (36) is designed as a double wall and has two essentially parallel individual walls (37) which are joined by a cross web (38) on their free ends, the groove (35) for the interior gasket (28) being formed on its front side facing the component, whereby in the area of the first flange on the filter housing (2) at least one rib is provided, engaging in the double wall and supporting the cross web (38) on its rear side facing away from the component.
  13. The liquid filter according to one of the preceding claims,
    characterized in that
    the filter housing (2) has a third flange (16) with which the filter housing (2) is screwed onto a heat exchanger (17), whereby an axially acting gasket is arranged between the heat exchanger (17) and the third flange (16), uncooled liquid from the crude-side feed entering the heat exchanger (17) through a feed in the heat exchanger (17) and flowing out of the heat exchanger (17) as a cooled liquid through an outlet of the heat exchanger (17) arranged in the interior of the feeder and flowing further to the ring filter insert.
  14. The liquid filter according to claim 13,
    characterized in that
    the heat exchanger (17) is mounted on the filter housing (2) with a mounting screw (18) which passes through the outlet, with a component (61) which has a thread and can be detached is supported on the filter housing (2).
  15. The liquid filter according to claim 14,
    characterized in that
    the component (61) is supported in the interior of the pipe union (59) which cooperates with the feeder connection (63) of the filter chamber shoulder (5).
  16. The liquid filter according to one of the preceding claims 13 to 15,
    characterized in that
    the feeder space (25) of the function carrier insert (23) has a pipe coupling (66) which projects axially somewhat away from the function carrier insert (23) on a side facing away from the component, whereby the filter housing (2) has a pipe union (67) which cooperates with this pipe coupling (66) in the manner of a plug connection and communicates with the feeder of the heat exchanger (17).
  17. The liquid filter according to one of the preceding claims,
    characterized in that
    the outlet space (26) has an auxiliary connection (70) which projects slightly away from the function carrier insert (23) axially on a side facing away from the component, whereby the filter housing (2) has an auxiliary connection (72) which cooperates with this auxiliary connection (70) in the manner of a plug connection and communicates with at least one sensor (20, 21) mounted on the filter housing (2).
  18. The liquid filter according to one of the preceding claims,
    characterized in that
    an interior space (47) of the filter housing (2) surrounded by the filter housing (2) has sealed elements carrying liquid on the clean side and on the crude side passing through it, whereby the no-load space (27) of the function carrier insert (23) communicates with this interior space (47) of the filter housing (2).
EP01911399A 2000-03-15 2001-01-27 Liquid filter, especially oil filter Expired - Lifetime EP1264082B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10012461A DE10012461A1 (en) 2000-03-15 2000-03-15 Oil filter for cleaning lubricating oil has annular filter insert separating clean side from input side
DE10012461 2000-03-15
PCT/DE2001/000351 WO2001069050A2 (en) 2000-03-15 2001-01-27 Liquid filter, especially oil filter

Publications (2)

Publication Number Publication Date
EP1264082A2 EP1264082A2 (en) 2002-12-11
EP1264082B1 true EP1264082B1 (en) 2004-01-07

Family

ID=7634722

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01911399A Expired - Lifetime EP1264082B1 (en) 2000-03-15 2001-01-27 Liquid filter, especially oil filter

Country Status (7)

Country Link
US (1) US6833066B2 (en)
EP (1) EP1264082B1 (en)
JP (1) JP4800545B2 (en)
BR (1) BR0109199B1 (en)
DE (2) DE10012461A1 (en)
MX (1) MXPA02008660A (en)
WO (1) WO2001069050A2 (en)

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JP2003527952A (en) 2003-09-24
US6833066B2 (en) 2004-12-21
US20030019462A1 (en) 2003-01-30
JP4800545B2 (en) 2011-10-26
EP1264082A2 (en) 2002-12-11
DE50101296D1 (en) 2004-02-12
MXPA02008660A (en) 2003-02-24
BR0109199B1 (en) 2009-12-01
WO2001069050A3 (en) 2001-12-06
BR0109199A (en) 2002-12-10
DE10012461A1 (en) 2001-09-20
WO2001069050A2 (en) 2001-09-20

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