EP1067999B2 - Filtre a liquide - Google Patents

Filtre a liquide Download PDF

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Publication number
EP1067999B2
EP1067999B2 EP99911588A EP99911588A EP1067999B2 EP 1067999 B2 EP1067999 B2 EP 1067999B2 EP 99911588 A EP99911588 A EP 99911588A EP 99911588 A EP99911588 A EP 99911588A EP 1067999 B2 EP1067999 B2 EP 1067999B2
Authority
EP
European Patent Office
Prior art keywords
liquid
filter according
liquid filter
collecting space
channel
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
EP99911588A
Other languages
German (de)
English (en)
Other versions
EP1067999A1 (fr
EP1067999B9 (fr
EP1067999B1 (fr
Inventor
Thomas Brieden
Markus Layer
Jürgen Frey
Mario Mürwald
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
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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
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Application filed by DaimlerChrysler AG, Mahle Filtersysteme GmbH filed Critical DaimlerChrysler AG
Publication of EP1067999A1 publication Critical patent/EP1067999A1/fr
Application granted granted Critical
Publication of EP1067999B1 publication Critical patent/EP1067999B1/fr
Publication of EP1067999B2 publication Critical patent/EP1067999B2/fr
Publication of EP1067999B9 publication Critical patent/EP1067999B9/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a liquid filter according to the preamble of claim 1.
  • Such a filter is known from EP 0 492 627 A2.
  • the collection room is closed there, so that in this penetrating liquid does not go outside can drain away.
  • WO 97/16234 is a liquid filter known for cleaning oil or fuel, that to an engine block of an internal combustion engine is flanged.
  • a cylindrical filter body In the existing plastic Housing of the filter is arranged a cylindrical filter body, its raw side with contaminated liquid, which is supplied via an inlet channel, acted upon becomes.
  • the outflow space of the filter body is with connected to a return channel through which the cleaned Liquid from the filter housing can be discharged.
  • the Inlet channel surrounds the return channel annular, wherein the outer wall of the inlet channel through the Outside wall of the filter housing is formed.
  • the frontal connections of the inlet and the return channel are about seals in receptacles on the engine block used.
  • the liquid to be cleaned is under pressure passed through the inlet channel to the filter body.
  • leaks occur, for example due to material fatigue of Seals, so that the raw fluid comes out and Can cause soiling or inside flows into the return channel and with the already cleaned Liquid mixed.
  • the seals must be made of very high quality and expensive material. In addition even small leaks cause a strong Pressure drop, so that required for the filtration Minimum pressure is not applied and filtration is not can be carried out.
  • the invention is based on the problem with low effort even in the case of a reliable and low-maintenance, generic plastic-liquid filter in which by Materialund / or Manufacturing errors caused unintentionally under high Pressure fluid in a larger volume enters the collection room as this room can absorb without pressure increase.
  • the generic filter in a mold be a constructive rational integration of additional Functional parts such as in particular a cooler for allows the liquid to be filtered as well as pressure sensors.
  • the inlet channel and the return channel lie in a containment room with a safety wall, which is part of the filter housing and the inlet channel and encloses the return channel radially.
  • a safety wall which is part of the filter housing and the inlet channel and encloses the return channel radially.
  • the safety is increased in case of leaking seals, because both the incoming crude liquid as also the outflowing clean liquid twice against the Environment are completed: within the inlet or the return channel and also within the Collecting space, the wall with little effort liquid-tight connected to the connecting flange can be.
  • the catchment room penetrating liquid through the provided there Drain drain, causing in the collecting space an unintentionally high pressure safely avoided becomes.
  • the pressure in the catchment room is limited to the pressure at its outlet.
  • the catchment room can be at atmospheric pressure be interpreted.
  • the overpressure in the supplied or discharged liquid flow is completely from the inlet or return channel recorded.
  • the catchment room remains unaffected, it acts as a security reservoir in the event that leaks occur. This will have to the seal between the safety wall and the connecting flange no elevated Quality requirements are made, that is For example, it can be a simple O-ring seal be used.
  • the filter housing made of plastic can in Injection molding in a casting with sufficient Dimensional accuracy can be made so that a post-processing is no longer necessary. In addition, a achieved considerable weight advantage.
  • the in the filter housing trained channels can run relatively thick-walled become the ones prevailing in the liquid To absorb pressures; At the same time, the security wall can be executed thin-walled, as in the Collection chamber no pressure applied.
  • the connections of the inlet channel and the return channel with a radial seal provided to a pressure and liquid-tight seal between the filter housing and the connecting flange to obtain.
  • Holding forces are essentially over the safety wall the pressure-free collecting space and in particular over reinforced fastening dome, in which appropriate metal bushes added are transferred, so that the channels of high Achs handledn are relieved and an undesirable Creep behavior of the plastic in the area of the channels is avoided.
  • the radial seals are preferably spherical designed to compensate for axial tolerances can.
  • the drainage channel runs in the connecting flange and is over a recess in the connecting flange with the collecting space connected.
  • a pressure relief valve be provided by the pressure on the Pure side of the filter is applied and when exceeded opens a boundary pressure to the collecting space and thereby causes a pressure relief.
  • the liquid leaked from the collecting space will turn derived via the drainage channel from the collecting space.
  • the liquid filter 1, the suitable for filtering oil or fuel in one Internal combustion engine is used, with the off Plastic existing filter housing 2 on a connecting flange 18, in particular an engine block a Internal combustion engine, mounted.
  • the to be cleaned Liquid will overpressure over Connecting flange 18 through a raw liquid line 25 via an inlet channel in the filter housing 2 first an oil cooler 24 arranged above the filter 1 fed and then through a filter body. 3 directed, in a lateral, radially outward directed cylindrical portion 26 of the filter housing 2 is located. After cleaning, the clean liquid flows via a return channel in the filter housing 2 back in a clean line 17 in the connection flange 18th
  • the cylindrical portion 26 with the filter body 3 is closed by a removable lid 27.
  • the filter housing 2, the connecting flange 18 and the oil cooler 24 are held together by screws 29, those in attachment domes 20, which are integrally formed with the filter housing, guided are; To increase the stability can in the attachment domes 20 metal bushings to be injected.
  • Fig. 2 is the supply of the unpurified liquid to remove in the filter housing 2.
  • the uncleaned Liquid flows over the radially inward guided Raw liquid line 25 in the connection flange 18th up to a recess in the connecting flange 18, in the the vertically extending inlet channel 4 in the filter housing 2 is inserted.
  • a radial seal 10 is arranged by means of the a liquid-tight seal between the Inlet channel 4 and the recess in the connection flange 18 is created.
  • the radial seal 10 is preferred crowned to compensate for axial tolerances.
  • a return check valve 19 arranged to a reflux of the to be cleaned Liquid back into the raw liquid line 25 to prevent.
  • the raw liquid continues to flow in the direction of the arrow up into the oil cooler 24, where the liquid tempered, i. cooled or heated depending on the application becomes.
  • a radial seal 34 is arranged in the area of the connection of the oil filter 24 to the inlet channel 4.
  • the inlet channel 4 is located in an annular Collection room 6 with a safety wall 7, the part of the filter housing 2 and the inlet channel 4 radially includes.
  • the collecting space 6 is formed without pressure and communicates with a recess 30 in FIG Connecting flange 18, which in radially extending drainage channels 23, which leads to the oil pan of the internal combustion engine to lead.
  • the drainage channels 23 can run parallel and have different diameters.
  • the front side 12 of the safety wall 7 engages in a circular recess on the top of the connecting flange 18, wherein in the region of End face 12 of the safety wall 7 between the Wall of recess and security wall one O-ring seal 13 is arranged around the collecting space 6 to complete liquid-tight against the environment.
  • Fig. 3 is the derivative of the liquid from the Remove filter housing 2.
  • the liquid After cooling the liquid in the oil cooler 24, the liquid is the filter body in the cylindrical portion 26 of the filter housing second fed.
  • the purified liquid flows from the radially inner outflow space 33 of the filter body in the return channel 5, which in the filter housing 2 is formed and extending in the vertical direction extends.
  • the return channel 5 has in the area its connection 9 a radial seal 11, which in a recess 31 in the connecting flange 18 protrudes and the return passage 5 with the connecting flange 18th pressure and fluid tight connects.
  • the recess 31 flows into a horizontal clean line 17, over which the purified liquid radially out of the Connecting flange 18 is guided and, for example at Use of oil as a liquid for lubrication of Storage locations can be used.
  • a pressure sensor 21 and a turbocharger port In the return passage 5 projects radially a fitting 22, via which the pressure in the return channel 5 a pressure sensor 21 and a turbocharger port can be fed.
  • the connector 22 is in a socket 35th inserted and in this nozzle via a radial seal 36 sealed.
  • the fixation of the connecting piece 22 on the nozzle 35 can by a bayonet lock be achieved.
  • the bayonet lock may in particular be designed in such a way that he by latching the bayonet closure means, without having to twist them against each other, can be closed.
  • Inside the filter housing 2 is the connecting piece 22 for fixing the Return channel 5.
  • the connection between the Return channel 5 and the connector 22 is carried out by that at one end of the annular wall of the return channel 5 an axial slot 37 is provided in the an outgoing from the fitting 22 fitting snap-in style is inserted.
  • connection types described above between the connector 22 and the Stutzen 35 on the one hand and between the return channel 5 and the connector 22 on the other hand are at the subject invention only manufacturing technology easy to produce sliding joints available.
  • a sliding connection with a Radial seal and a bayonet lock can also the pressure sensor 2 with the connector 22 in be connected advantageously.
  • the same way can also have other functional parts with the filter housing be connected fluidly.
  • a pressure relief valve 15 Parallel to the return channel 5 is a pressure relief valve 15 arranged in one piece with the Filter housing 2 formed housing receptacle 16th sitting.
  • the pressure relief valve closes 15 a communicating with the receiving space 6 Recess 32 in the connection flange 18, which connects the collecting space 6 with the clean line 17, so that when the pressure relief valve 15 is closed Connection between the clean line 17 and the collecting space 6 is interrupted.
  • a limit pressure in the clean line 17 opens the pressure relief valve 15, by the spring-loaded valve body in the closed position the pressure relief valve 15 recedes and the Connection between the recess 32 and the Collection chamber 6 releases so that liquid from the clean line 17 can flow into the collecting space 6 and a Overpressure in the clean line 17 is reduced.
  • the collecting space 6 escaped liquid can over the illustrated in Fig. 2, communicating with the collecting space 6 Recess 30 in the connection flange 18th flow away.
  • the return channel 5, the housing receptacle 16 and the inlet channel 4 shown in FIG. 2 run parallel to each other.
  • the front sides of the channels 4, 5, the Housing receptacle 16 and expedient and the safety wall 7 end axially advantageous in different Distance.
  • FIG. 4 The illustration according to FIG. 4 can be seen that the inlet channel 4 with the return check valve 19, the return channel 5, the pressure relief valve 15th in the housing receptacle 16 ( Figure 3) and the recess 30 in the connecting flange all radially within the cylindrical safety wall 7 lie, which the collecting space 6 limited.
  • clean line 17 flows the liquid via the pressure relief valve 15 into the collecting space 6 and flows through the recess 30 again.
  • the safety wall 7 lies within one Housing outer wall 14.
  • the Befest Trentsdome 20 mark corner points in the outer wall 14; there are in total four fastening domes 20 are provided, which together to form a rectangle.

Claims (14)

  1. Filtre à liquide, en particulier filtre à huile ou à carburant dans un moteur à combustion interne, comprenant un corps filtrant (3) logé dans un boítier filtrant (2) en matière plastique, un conduit d'amenée (14) amenant du liquide brut, un conduit de retour (5) évacuant du liquide épuré, pour la mise en place hermétique sur une bride de raccordement (18), le conduit d'amenée (4) et le conduit de retour (5) étant disposés dans un espace collecteur (6) du boítier filtrant, et l'espace collecteur (6) étant délimité par une paroi de sécurité (7) enveloppant dans le sens radial le conduit d'amenée (4) et le conduit de retour (5), réalisée d'une seule pièce avec le boítier filtrant (2), et à étanchéifier au moyen d'un joint (13) par rapport à la bride de raccordement (18), caractérisé en ce que l'espace collecteur (6) présente un conduit d'évacuation (23).
  2. Filtre à liquide suivant la revendication 1, caractérisé en ce qu'une soupape de sûreté (15), communiquant avec une conduite de liquide épuré (17) prévue dans la bride de raccordement (18) et ouvrant en direction de l'espace collecteur (6), est disposée dans l'espace (6).
  3. Filtre à liquide suivant l'une des revendications 1 et 2, caractérisé en ce qu'une bague à lèvres avec ressort (10, 11) est respectivement disposée dans 1a zone des raccords (8, 9) du conduit d'amenée (4) et du conduit de retour (5).
  4. Filtre à liquide suivant la revendication 3, caractérisé en ce que les bagues à lèvres avec ressort (10, 11) ont une réalisation bombée.
  5. Filtre à liquide suivant l'une des revendications précédentes, caractérisé en ce que le joint (13), concourant avec la paroi de sécurité (7), agit dans la zone du côté frontal ouvert (12) de la paroi de sécurité (7).
  6. Filtre à liquide suivant l'une des revendications précédentes, caractérisé en ce que la soupape de sûreté (15) est maintenue dans un logement (16) du boítier filtrant (2).
  7. Filtre à liquide suivant l'une des revendications précédentes, caractérisé en ce que les conduits (4, 5) et/ou le logement de boítier (16) s'étendent à peu près parallèlement dans la zone de l'espace collecteur (6).
  8. Filtre à liquide suivant l'une des revendications précédentes, caractérisé en ce qu'un clapet anti-retour (19) est disposé dans le conduit d'amenée (4).
  9. Filtre à liquide suivant l'une des revendications précédentes, caractérisé en ce que le boítier filtrant (2) présente des dômes de fixation (20) de réalisation renforcée.
  10. Filtre à liquide suivant la revendication 9, caractérisé en ce que des douilles métalliques sont logées dans les dômes de fixation (20).
  11. Filtre à liquide suivant l'une des revendications précédentes, caractérisé en ce qu'un capteur de pression (21) est prévu pour déterminer la pression dans le conduit de retour (5).
  12. Filtre à liquide suivant la revendication 11, caractérisé en ce qu'un raccord (22), assemblé avec le conduit de retour (5), est disposé pour recevoir le capteur de pression (21).
  13. Filtre à liquide suivant l'une des revendications précédentes, caractérisé en ce qu'un refroidisseur d'huile (24) est associé au filtre (1) pour le refroidissement du liquide à épurer.
  14. Filtre à liquide suivant la revendication 13, caractérisé en ce que la fixation du boítier filtrant (2) sert simultanément de fixation du refroidisseur d'huile (24).
EP99911588A 1998-02-04 1999-02-01 Filtre a liquide Expired - Lifetime EP1067999B9 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19804329 1998-02-04
DE19804329A DE19804329A1 (de) 1998-02-04 1998-02-04 Flüssigkeitsfilter
PCT/DE1999/000332 WO1999039802A1 (fr) 1998-02-04 1999-02-01 Filtre a liquide

Publications (4)

Publication Number Publication Date
EP1067999A1 EP1067999A1 (fr) 2001-01-17
EP1067999B1 EP1067999B1 (fr) 2002-01-16
EP1067999B2 true EP1067999B2 (fr) 2004-07-28
EP1067999B9 EP1067999B9 (fr) 2005-01-05

Family

ID=7856597

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99911588A Expired - Lifetime EP1067999B9 (fr) 1998-02-04 1999-02-01 Filtre a liquide

Country Status (5)

Country Link
US (1) US6379537B1 (fr)
EP (1) EP1067999B9 (fr)
DE (2) DE19804329A1 (fr)
ES (1) ES2172312T3 (fr)
WO (1) WO1999039802A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29915384U1 (de) * 1999-09-02 2001-01-18 Hengst Walter Gmbh & Co Kg Kombination aus einer Haupteinheit und wenigstens einer Anbau-Funktionseinheit
DE19951084A1 (de) 1999-10-23 2001-04-26 Mahle Filtersysteme Gmbh Flüssigkeitsfilter, insbesondere Ölfilter
DE10012461A1 (de) 2000-03-15 2001-09-20 Mahle Filtersysteme Gmbh Flüssigkeitsfilter, insbesondere Ölfilter
US6591807B1 (en) * 2000-08-25 2003-07-15 Walter Hengst Gmbh & Co Kg Combination comprising a main unit and at least one add-on functional unit
DE20108573U1 (de) * 2001-05-21 2002-10-02 Hengst Walter Gmbh & Co Kg Flüssigkeitsfilter mit einem Träger aus einem zweiten Werkstoff
DE20312318U1 (de) * 2003-08-09 2004-12-16 Hengst Gmbh & Co.Kg Flüssigkeitsfilter für eine Brennkraftmaschine
US20070080106A1 (en) * 2005-10-12 2007-04-12 Kohler Co. Oil filter housing
JP4889541B2 (ja) * 2007-03-28 2012-03-07 本田技研工業株式会社 車両用内燃機関
US8534424B2 (en) * 2008-09-10 2013-09-17 Ford Global Technologies, Llc Automotive turbocharger with integral lubricating oil filter
US10052577B2 (en) 2016-02-17 2018-08-21 Caterpillar Inc. Self-cleaning oil filter housing
US10648509B2 (en) 2017-05-30 2020-05-12 Itt Manufacturing Enterprises Llc. Oil filter/liquid indicator assembly

Citations (2)

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Publication number Priority date Publication date Assignee Title
DE8014780U1 (de) † 1980-06-03 1980-09-25 Sartorius Gmbh, 3400 Goettingen Mehrteiliges filtergehaeuse zur aufnahme von mehreren patronenfoermigen filterelementen
DE69207199T2 (de) † 1991-02-12 1996-08-08 Systems Chemistry Inc Verbindungsanordnung mit mittel zur leckdetektion

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DE9407889U1 (de) * 1994-05-12 1994-07-14 Couwenbergs Paul Vorrichtung zum Filtern von verunreinigten Flüssigkeiten
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JP3389010B2 (ja) * 1996-07-02 2003-03-24 愛三工業株式会社 燃料フィルタ
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US5858224A (en) * 1997-03-18 1999-01-12 Nelson Industries, Inc. Filter with pressure sensor mounted in housing end

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8014780U1 (de) † 1980-06-03 1980-09-25 Sartorius Gmbh, 3400 Goettingen Mehrteiliges filtergehaeuse zur aufnahme von mehreren patronenfoermigen filterelementen
DE69207199T2 (de) † 1991-02-12 1996-08-08 Systems Chemistry Inc Verbindungsanordnung mit mittel zur leckdetektion

Also Published As

Publication number Publication date
EP1067999A1 (fr) 2001-01-17
EP1067999B9 (fr) 2005-01-05
DE59900637D1 (de) 2002-02-21
WO1999039802A1 (fr) 1999-08-12
US6379537B1 (en) 2002-04-30
EP1067999B1 (fr) 2002-01-16
DE19804329A1 (de) 1999-08-05
ES2172312T3 (es) 2002-09-16

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