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WO2001081803A1 - Valve anti-retour - Google Patents

Valve anti-retour Download PDF

Info

Publication number
WO2001081803A1
WO2001081803A1 PCT/EP2001/003384 EP0103384W WO0181803A1 WO 2001081803 A1 WO2001081803 A1 WO 2001081803A1 EP 0103384 W EP0103384 W EP 0103384W WO 0181803 A1 WO0181803 A1 WO 0181803A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter element
housing
check valve
valve according
collar
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.)
Ceased
Application number
PCT/EP2001/003384
Other languages
German (de)
English (en)
Inventor
Bolko Schuseil
Ingo Sebastian
Leonhard Halmanseger
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.)
Bayerische Motoren Werke AG
INA Waelzlager Schaeffler OHG
Original Assignee
Bayerische Motoren Werke AG
INA Waelzlager Schaeffler OHG
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 Bayerische Motoren Werke AG, INA Waelzlager Schaeffler OHG filed Critical Bayerische Motoren Werke AG
Priority to AU73901/01A priority Critical patent/AU7390101A/en
Publication of WO2001081803A1 publication Critical patent/WO2001081803A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/04—Check valves with guided rigid valve members shaped as balls
    • F16K15/044—Check valves with guided rigid valve members shaped as balls spring-loaded

Definitions

  • the invention relates to a check valve with a housing with a valve body arranged in the area of a liquid inlet with a backstop loaded with closing force and a filter element.
  • a check valve is described in DE-OS 29 41 244 A1, in which a cylindrical strainer is attached to the outside of the valve housing. This is to prevent dirt from entering the check valve, which could lead to a deterioration in function or even failure of the valve. Over time, the dirt particles collected on the outside of the filter element. If the sieve is replaced as part of maintenance or repair work, there is a risk that the dirt particles will fall down and contaminate the machine, which can be an internal combustion engine, for example. If these dirt particles, which are also referred to as engine dirt, reach areas behind the non-return valve, certain engine components may malfunction. In particular, control valves with narrow oil guiding gaps should be mentioned here. It has also proven to be unfavorable that the outside of the strainer or filter is not protected. This can cause damage to this item before or during installation.
  • the invention is therefore based on the problem of avoiding the disadvantages mentioned and of enabling simpler and more reliable handling.
  • the filter element is arranged inside the housing in the region of a liquid drain.
  • the filter element is connected downstream of the valve body in relation to the direction of flow of the fluid. It is advantageous a filter inside the housing is formed, in which the dirt particles are collected.
  • the use of only one compact component leads to a reduction in the number of parts and to a shortening of the assembly time. If it is necessary to replace the check valve at a later point in time, this is dismantled together with the integrated filter element. The check valve closed in this state and the filter element prevent dirt particles trapped between the check valve and the filter element from escaping and contaminating the surrounding area.
  • Check valves are particularly preferred in which the filter element is essentially hollow cylindrical or hemispherical and has an opening on one side. Filter elements designed in this way have a relatively large filter surface in relation to the required installation space. Even if the passage openings of the filter are partially blocked by dirt particles, there is no impairment of the flow.
  • a particularly reliable function of the check valve according to the invention is obtained if the filter element has a circumferential, essentially radially outward-pointing collar in the region of the opening.
  • the collar is used to fix the filter element in a fixed position by positively fitting it to a circumferential projection within the housing. In this way, the forces acting on the filter element by the flow are transmitted to the housing of the check valve.
  • the positive connection between the filter element and the projection seals the filter element, so that all dirt particles are retained within the housing.
  • the filter element is essentially disk-shaped and has a collar which is arranged in a circumferential groove of the housing.
  • a disk-shaped filter element can be manufactured more cost-effectively.
  • the fixation of the filter element to the The housing can be flanged or a securing element can be used.
  • a particularly simple assembly and trouble-free operation result if the collar of the filter element can be clamped between the projection of the housing and the valve body.
  • the valve body containing the check valve rests with one end against the collar of the filter element, and its other end lies against the housing in the area of the liquid inlet. It is particularly advantageous that securing elements for fastening the filter element are omitted.
  • the collar of the filter element can be placed against the projection in the region of the liquid drain and fastened by means of a securing element.
  • the housing has an internal thread in the area of the liquid drain with an undercut in the base of the thread, into which a locking element, preferably designed as a locking ring, can be inserted.
  • a locking element preferably designed as a locking ring
  • the securing element can alternatively also be an O-ring.
  • FIG. 1 shows a first embodiment of a check valve according to the invention with a hollow cylindrical filter element
  • FIG. 2 shows a second exemplary embodiment, in which the collar of the filter element is arranged in a thread undercut
  • Fig. 3 shows a third embodiment with a disc-shaped filter element.
  • the check valve 1 according to the invention shown in FIG. 1 essentially consists of a housing 2 which is axially symmetrical.
  • the interior of the housing 2 is hollow and serves to receive a valve body 3, the outer diameter of which approximately corresponds to the inner diameter of the housing 2.
  • the valve body 3 serves as a backstop loaded with closing force.
  • it contains a valve ball 4, which is longitudinally movable along a valve bore 5 of the valve body 3.
  • the diameter of the valve ball 4 is selected to be somewhat smaller than the diameter of the valve bore 5, so that the movement of the valve ball 4 within the valve bore 5 is made possible.
  • Opening 6 of valve body 3 serves as a liquid inlet and has a
  • valve ball 4 lies radially on one
  • the opposite side of the valve ball 4 cooperates with a spring which is designed as a helical compression spring 8 in the exemplary embodiment shown.
  • the helical compression spring 8 is supported on the one hand on the valve ball 4 and on the other hand on the inner surface 9 of the valve body 3.
  • the helical compression spring 8 is installed with a certain preload, so that the valve ball 4 is pressed against the section 7 of the opening 6 of the valve body 3 in the idle state, so that the valve is closed.
  • a central bore 10 extends from the inner surface 9 to the inner end 11 of the valve body 3.
  • the check valve 1 can be installed, for example, in the oil circuit of an internal combustion engine. It is, for example, part of a hydraulically operated camshaft adjustment, in which the backflow of the hydraulic fluid must be prevented in certain operating states.
  • Engine oil is used as hydraulic fluid, which is conveyed through a line, not shown, into the area of the opening 6 of the check valve 1, the direction of flow corresponding to the direction of the arrow.
  • the increased pressure of the oil acts on the outer region 12 of the valve ball 4 counter to the force of the helical compression spring 8.
  • valve ball 4 becomes inside the valve bore 5 in the direction of the arrow moved so that the fluid in the area of section 7 enters the interior of the valve body 3 along the surface of the valve ball 4 and passes through the central bore 10 into the filter element 13. If the pressure of the oil is reduced or if no oil is pumped to the check valve 1, the valve ball 4 is moved back by the restoring force of the energy stored in the helical compression spring 8 until it rests against the section 7 of the valve opening 6. In this state, the oil cannot flow back, so that valve 1 fulfills its shut-off function.
  • the filter element 13 serves to collect dirt particles, which may be combustion residues that are inevitably contained in the oil flow. If this engine dirt would reach downstream areas, this could result in malfunctions of components or assemblies. These faults may lead to deteriorated exhaust gas values, higher consumption and less than optimal engine operation. However, such problems are avoided by the filter element 13.
  • the filter element 13 has the shape of a hollow cylinder and has an angled collar 14 in the region of its opening.
  • the collar 14 faces outwards and lies against a complementary projection 15 of the housing 2.
  • the projection 15 is also designed to be radially circumferential, so that the entire oil flow must flow through the through openings of the filter element 13.
  • the side of the collar 14 facing away from the projection 15 is in contact with an end section 16 of the valve body 3.
  • the arrangement of the collar 14 between the projection 15 and the end section 16 fixes the filter element 13 in a fixed position.
  • the valve body 3 is clamped in the area of the liquid inlet by a deformed edge 17 of the housing 2.
  • the filter element 13 is first inserted into the housing 2 in the direction of flow, then the valve body 3 is inserted, and then the edge 17 is formed.
  • the filter element is - as with all subsequent embodiments - completely accommodated in the housing and thus protected against any damage during assembly or disassembly.
  • the housing 2 has an internal thread 18, which is used for fastening the check valve 1 to an engine block or to a part arranged on the engine block.
  • FIG. 2 Another embodiment of the check valve 1 according to the invention is shown in FIG. 2.
  • the housing 2 and the valve body 3 are identical to the arrangement of FIG. 1.
  • the collar 19 of the filter element 13 is arranged in an undercut 20 of the thread 18.
  • the collar 19 is supported on the one hand on the projection 15 of the housing 2, on the other hand it is fixed by a securing element, which is designed as a ring 21 in the exemplary embodiment shown.
  • the corresponding external thread, an engine block or another component, to which the check valve 1 is screwed is located in the free space 22 between the internal thread 18 and the outside of the filter element 13. An additional securing and fixing of the filter element 13 is thereby achieved.
  • the housing 2 is unscrewed so that the entire arrangement with the valve body 3 and the filter element 13 can be removed.
  • the dirt particles are located inside the filter element 13, which is closed to the outside, so that they cannot accidentally get into the oil system.
  • the check valve 1 has a disk-shaped filter element 24, which is arranged in a circumferential groove 25.
  • the filter element 24 is sieve-shaped and has a ring-like, circumferential edge 26, which enables fastening in the groove 25.
  • the groove 25 receives a securing element designed as a ring 28, which holds the filter element 24 in the groove 25.
  • This embodiment has the advantage that it can be produced particularly inexpensively.
  • the dirt particles are collected in the free space 27, which is formed by the interior of the housing 2 and the filter element 24. captured. If it is necessary to replace the check valve 1, it can be removed completely together with the integrated filter 24 without dirt particles being able to escape. As a result, malfunctions in the operation of the engine are avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Check Valves (AREA)
  • Filtration Of Liquid (AREA)

Abstract

L'invention concerne une valve anti-retour (1) comprenant un boîtier (2) pourvu d'un corps de valve (4) placé dans la zone d'une amenée de liquide et ayant un dispositif anti-retour soumis à une force de fermeture, ainsi qu'un élément filtrant (13). La valve anti-retour selon l'invention est caractérisée en ce que l'élément filtrant est placé à l'intérieur du boîtier dans la zone d'un écoulement de liquide.
PCT/EP2001/003384 2000-04-20 2001-03-24 Valve anti-retour Ceased WO2001081803A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU73901/01A AU7390101A (en) 2000-04-20 2001-03-24 Nonreturn valve

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000119534 DE10019534A1 (de) 2000-04-20 2000-04-20 Rückschlagventil
DE10019534.2 2000-04-20

Publications (1)

Publication Number Publication Date
WO2001081803A1 true WO2001081803A1 (fr) 2001-11-01

Family

ID=7639402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2001/003384 Ceased WO2001081803A1 (fr) 2000-04-20 2001-03-24 Valve anti-retour

Country Status (3)

Country Link
AU (1) AU7390101A (fr)
DE (1) DE10019534A1 (fr)
WO (1) WO2001081803A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007093571A1 (fr) * 2006-02-18 2007-08-23 Schaeffler Kg Clapet anti-retour
WO2008135486A1 (fr) * 2007-05-04 2008-11-13 Schaeffler Kg Tendeur à courroie hydraulique doté d'un piston particulier
CN101344176A (zh) * 2008-08-15 2009-01-14 浙江高博卫浴有限公司 过滤式角阀
ITMI20082316A1 (it) * 2008-12-23 2010-06-24 Vebe Elettromecc Valvola di contropressione per sistemi di alimentazione combustibile a bassa pressione di motori a ciclo diesel dotata di sistema di sicurezza da sovrappressioni
WO2013033127A1 (fr) * 2011-09-01 2013-03-07 Continental Automotive Systems Us, Inc. Régulateur de pression de carburant compact
EP3037311A1 (fr) * 2014-12-22 2016-06-29 Henzel Formenbau GmbH Dispositif a vide pour servofrein pneumatique
CN108036087A (zh) * 2017-12-07 2018-05-15 巨浪(苏州)热水器有限公司 一种进气阀
FR3062191A1 (fr) * 2017-01-25 2018-07-27 Saipem S.A. Soupape de pression differentielle pour conduite sous-marine de transport de fluides et piece de jonction a bride de limitation de propagation d'ecrasement comprenant une telle soupape

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055466A1 (de) * 2006-11-24 2008-05-29 Schaeffler Kg Plattenventil für ein hydraulisches Spannsystem
DE102007029466B4 (de) 2007-06-26 2015-12-31 Schaeffler Technologies AG & Co. KG Rückschlagventil
DE102008042485A1 (de) * 2008-09-30 2010-04-01 BSH Bosch und Siemens Hausgeräte GmbH Kochgerät
DE102021001358A1 (de) 2021-03-15 2022-09-15 Mercedes-Benz Group AG Rückschlagventil für ein Unterdrucksystem eines Kraftfahrzeugs, insbesondere eines Kraftwagens
DE102024110692A1 (de) * 2024-04-17 2025-10-23 Audi Aktiengesellschaft Öl-Ansaugeinrichtung und Kraftfahrzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB929526A (en) * 1961-03-20 1963-06-26 Avery Hardoll Ltd Improvements in or relating to couplings for flexible conduits
DE2941244A1 (de) 1979-10-11 1981-04-30 Lechler Gmbh & Co Kg, 7012 Fellbach Rueckschlagventil
DE3233268A1 (de) * 1982-09-08 1984-03-08 Robert Bosch Gmbh, 7000 Stuttgart Hydraulikventil
FR2738892A1 (fr) * 1995-09-15 1997-03-21 Cahouet Clapet unidirectionnel protege contre l'inflammation spontanee
DE19732747A1 (de) * 1997-07-30 1999-02-04 Bosch Gmbh Robert Rückschlagventil, insbesondere für eine Kolbenpumpe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB929526A (en) * 1961-03-20 1963-06-26 Avery Hardoll Ltd Improvements in or relating to couplings for flexible conduits
DE2941244A1 (de) 1979-10-11 1981-04-30 Lechler Gmbh & Co Kg, 7012 Fellbach Rueckschlagventil
DE3233268A1 (de) * 1982-09-08 1984-03-08 Robert Bosch Gmbh, 7000 Stuttgart Hydraulikventil
FR2738892A1 (fr) * 1995-09-15 1997-03-21 Cahouet Clapet unidirectionnel protege contre l'inflammation spontanee
DE19732747A1 (de) * 1997-07-30 1999-02-04 Bosch Gmbh Robert Rückschlagventil, insbesondere für eine Kolbenpumpe

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007093571A1 (fr) * 2006-02-18 2007-08-23 Schaeffler Kg Clapet anti-retour
WO2008135486A1 (fr) * 2007-05-04 2008-11-13 Schaeffler Kg Tendeur à courroie hydraulique doté d'un piston particulier
CN101344176A (zh) * 2008-08-15 2009-01-14 浙江高博卫浴有限公司 过滤式角阀
ITMI20082316A1 (it) * 2008-12-23 2010-06-24 Vebe Elettromecc Valvola di contropressione per sistemi di alimentazione combustibile a bassa pressione di motori a ciclo diesel dotata di sistema di sicurezza da sovrappressioni
WO2013033127A1 (fr) * 2011-09-01 2013-03-07 Continental Automotive Systems Us, Inc. Régulateur de pression de carburant compact
US9587603B2 (en) 2011-09-01 2017-03-07 Continental Automotive Systems, Inc. Compact fuel pressure regulator
EP3037311A1 (fr) * 2014-12-22 2016-06-29 Henzel Formenbau GmbH Dispositif a vide pour servofrein pneumatique
FR3062191A1 (fr) * 2017-01-25 2018-07-27 Saipem S.A. Soupape de pression differentielle pour conduite sous-marine de transport de fluides et piece de jonction a bride de limitation de propagation d'ecrasement comprenant une telle soupape
WO2018138419A1 (fr) * 2017-01-25 2018-08-02 Saipem S.A. Pièce de jonction à bride de limitation de propagation d'écrasement comprenant une soupape de pression différentielle pour conduite sous-marine de transport de fluides
AU2017395157B2 (en) * 2017-01-25 2020-05-14 Saipem S.A. Connector with flange for limiting buckle propagation comprising a differential pressure valve for underwater fluid-transport pipe
US11333260B2 (en) 2017-01-25 2022-05-17 Saipem S.A. Connector with flange for limiting buckle propagation comprising a differential pressure valve for underwater fluid-transport pipe
CN108036087A (zh) * 2017-12-07 2018-05-15 巨浪(苏州)热水器有限公司 一种进气阀

Also Published As

Publication number Publication date
DE10019534A1 (de) 2001-10-25
AU7390101A (en) 2001-11-07

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