EP1766239B1 - Pompe a vide a une ailette - Google Patents

Pompe a vide a une ailette Download PDF

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Publication number
EP1766239B1
EP1766239B1 EP05739759A EP05739759A EP1766239B1 EP 1766239 B1 EP1766239 B1 EP 1766239B1 EP 05739759 A EP05739759 A EP 05739759A EP 05739759 A EP05739759 A EP 05739759A EP 1766239 B1 EP1766239 B1 EP 1766239B1
Authority
EP
European Patent Office
Prior art keywords
vacuum pump
valve
insert
outlet
blade vacuum
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 - Fee Related
Application number
EP05739759A
Other languages
German (de)
English (en)
Other versions
EP1766239A1 (fr
Inventor
Willi Schneider
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.)
Joma Hydromechanic GmbH
Original Assignee
Joma Hydromechanic 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 Joma Hydromechanic GmbH filed Critical Joma Hydromechanic GmbH
Publication of EP1766239A1 publication Critical patent/EP1766239A1/fr
Application granted granted Critical
Publication of EP1766239B1 publication Critical patent/EP1766239B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C18/3442—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the surfaces of the inner and outer member, forming the inlet and outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C25/00—Adaptations of pumps for special use of pumps for elastic fluids
    • F04C25/02—Adaptations of pumps for special use of pumps for elastic fluids for producing high vacuum
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/028—Means for improving or restricting lubricant flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2220/00—Application
    • F04C2220/10—Vacuum

Definitions

  • the invention relates to a single-wing vacuum pump with a cup-shaped housing, according to the features of the preamble of claim 1.
  • Vacuum pumps of such a construction are known. They usually have a housing in which a rotor is rotatably mounted, wherein the rotor is located in a working space. Such vacuum pumps are u.a. also used in vehicles, where, for example, the motor of the motor vehicle rotates the rotor. These vacuum pumps are lubricated with oil, which also serves to seal the sealing gap between the wing and working space. It is desirable that as little as possible oil is led out of the air outlet opening of the pressure chamber from the working space.
  • a feed pump in which the air inlet and the air outlet are provided in the peripheral surface. There are no check valves at the air inlet as this pump is not operated as a vacuum pump. Therefore, when turning the pump backwards, any oil that may be present may be expelled through the air inlet.
  • the WO-A-2004 / 044,431 discloses a vacuum pump which is provided at the transition from the pressure chamber to the suction chamber with an additional valve which opens during reverse rotation to the cylinder head and can be drained via the residual oil.
  • the air inlet and the air outlet are axial, that is arranged in the bottom of the pump, which is why this pump is relatively expensive to manufacture due to the many deflections.
  • the invention has for its object to provide a single-wing vacuum pump that can be easily rotated backwards and is easy to produce.
  • the air outlet opening is likewise located in the circumferential area surrounding the pressure chamber.
  • the arrangement of the outlet opening in the peripheral wall of the essential advantage is provided that the size of the opening cross-section can be made larger than when the outlet opening is provided in the bottom.
  • the pressure chamber is emptied faster and expelling the sucked air from the pressure chamber less energy is needed.
  • a gradual opening can be effected. For example, the opening edge may be skewed so that the outlet opening is initially available with a small cross-section that gradually increases. As a result, pressure surges are avoided.
  • an oil outlet opening is provided in the peripheral surface surrounding the suction space. Rotates the rotor, for whatever reason, backwards, then in the suction chamber accumulating lubricating oil can be removed from this ⁇ lauslassö réelle because the suction prevents a corresponding valve that already sucked air and lubricating oil are ejected again. This air and the lubricating oil can now escape through the oil outlet.
  • the outlet valve is a leaf spring valve.
  • Such valves are responsive, require a very small amount of space and are above all inexpensive.
  • the back of the exhaust valve is flat, so that the leaf spring valve optimally applies to the edge of the outlet, without the need for special Anpress Anlagenn required.
  • the exhaust valve is thus closed in the suction and opens to expel the air.
  • an exhaust valve connects directly to the air outlet opening.
  • the outlet valve is arranged in the peripheral wall of the housing. This arrangement is very space-saving and it is avoided that the housing is externally provided with attachments.
  • the air outlet opening is provided with an insert, wherein the insert forms part of the peripheral surface of the pressure chamber or is integrated in the housing wall.
  • the insert forms part of the peripheral surface of the pressure chamber or is integrated in the housing wall.
  • the outlet valve directly adjoins the oil outlet opening. This valve prevents air and / or oil from being drawn in through the oil outlet when the pump is in normal operation.
  • the outlet valve is arranged in the peripheral wall of the housing.
  • This outlet valve can also be designed as a leaf spring valve, and advantageously both the outlet valve of the oil outlet opening and the outlet valve of the air outlet opening are formed by a single component.
  • This single component in the form of a leaf spring valve is, for example, a stamped sheet metal part which has two spring tongues.
  • the oil outlet opening is provided in an insert, wherein the insert forms a part of the peripheral surface of the working space or the suction chamber.
  • the insert extends from the pressure chamber into the suction chamber, wherein the insert advantageously expands over the entire height of the inner circumferential surface.
  • the insert consists according to the invention of an elastic material, in particular of plastic.
  • the insert can act as a support or holding element for the outlet valve, wherein the outlet valve is provided between the insert and the housing wall.
  • the outlet valve may also be provided in use, wherein the outlet valve is, for example, encapsulated by the material of the insert.
  • FIG. 1 is denoted by the reference numeral 10, a vacuum pump, in which the housing 12 is shown without housing cover.
  • the housing 12 has a suction port 14, which opens into an interior 16.
  • a generally designated 18 rotor in which a wing 20 is mounted orthogonal to the axis of rotation 21 slidably.
  • the rotor 18 has a rotor housing 24, with which it bears against an inner peripheral surface 22 of a working space 30.
  • the rotor 18 passes through the housing 12, in particular a bottom 26 of the interior 18 via a drive opening 28 and protrudes on the rear side out of the housing 12, so that it can be rotated (by means of a drive, not shown).
  • the drive opening 28 is provided with suitable sealing means, so that neither lubricant leak nor air and / or dirt in the interior 16 can occur.
  • the interior 16 is divided by the wing 20 into a suction chamber 40 and a pressure chamber 42.
  • FIG. 1 is also apparent that in the housing wall 36, an insert 38 is located at the transition from the suction chamber 40 to the pressure chamber 42 is positioned.
  • this transition is denoted by the reference numeral 44, wherein at this transition 44 and the peripheral wall 46 of the circular cylindrical rotor housing 24 abuts against the inner peripheral surface 22. It is clear that in this area of transition 44 in the Inner circumferential surface 22 both an air outlet opening 48 and an oil outlet opening 50 are located.
  • the air outlet opening 48 extends over a portion of the height of the inner peripheral surface 22, but it can also over the entire height of the inner peripheral surface 22 or at least over a substantial. Extend part of this height.
  • the air outlet opening 48 extends in the circumferential direction away from the transition 44 and ends in an oblique front edge 52. This avoids that the air outlet opening 48 opens abruptly, or the pressure chamber 42 is too fast connected to the air outlet opening 48, whereby pressure surges can occur ,
  • the gradual opening is assisted by the fact that the channel of the air outlet opening 48 in the direction of rotation of the wing 20 (arrow 54 in FIG. 1 ) gradually increases in its radial depth.
  • the air outlet 48 opens into the insert 38, the in FIG. 2 is shown above an opening 38 receiving the insert 38.
  • the channel of the air outlet opening 48 is deflected downward, so that the expelled gas of the housing 12 in the direction of the axis of the opening 56 leaves downward.
  • valve body 58 Between the insert 38 and the air outlet opening 48 is still a valve body 58, in which an outlet valve 60 is provided.
  • the valve body 58 has a further outlet valve 62 which is assigned to the oil outlet opening 50 and closes it. Both outlet valves 60 and 62 are formed as leaf spring valves and open both in the direction of the insert 38 and thereby prevent suction through the openings 48 and 50 in the direction of the interior 16.
  • the insert 38 has a shape and thickness of Valve body 58 corresponding recess 64, in which the Valve body 58 is inserted before the insert 38 is inserted into the opening 56.
  • the torque required for ejecting is reduced to a minimum in a simple manner.
  • the power consumption of the vacuum pump 10 is thereby reduced.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)

Claims (13)

  1. Pompe à vide à une ailette (10), comprenant un boîtier en forme de pot (12), un rotor (18) pivotant logé de façon excentrique dans le boîtier (12), une ailette (20) logée de façon mobile dans le rotor (18) de façon orthogonale à l'axe de rotation (21), l'ailette s'appliquant par ses pointes d'ailette contre une surface circonférentielle intérieure (22) délimitant un espace de travail (30) et divisant ainsi l'espace de travail (30) en un espace d'aspiration (40) et un espace de pression (42), et l'espace d'aspiration (40) est muni d'un orifice d'entrée d'air et l'espace de pression (42) est muni d'un orifice de sortie d'air (48), dans laquelle l'orifice de sortie d'air (48) est disposé dans la surface circonférentielle intérieure (22) entourant l'espace de pression (42), caractérisée en ce que dans la surface circonférentielle intérieure (22) entourant l'espace d'aspiration (40), un orifice de sortie d'huile (50) est prévu, en ce que la soupape de sortie est une soupape à ressort à lames, en ce que le côté arrière de la soupape de sortie (60) est réalisé de façon plane et que la soupape à ressort à lames s'applique contre le bord de l'orifice de sortie d'air (48).
  2. Pompe à vide à une ailette selon la revendication 1, caractérisée en ce que l'orifice de sortie d'air (48) est suivi immédiatement de la soupape de sortie (60).
  3. Pompe à vide à une ailette selon la revendication 2, caractérisée en ce que la soupape de sortie (60) est disposée dans la paroi circonférentielle (36) du boîtier (12).
  4. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'orifice de sortie d'air (48) est prévu dans un insert (38) et l'insert (38) fait partie de la surface circonférentielle intérieure (22).
  5. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'orifice de sortie d'huile (50) est suivi immédiatement d'une soupape de sortie (62).
  6. Pompe à vide à une ailette selon la revendication 5, caractérisée en ce que la soupape de sortie (62) est disposée dans la paroi circonférentielle (36) du boîtier (12).
  7. Pompe à vide à une ailette selon la revendication 5 ou 6, caractérisée en ce que la soupape de sortie (62) est une soupape à ressort à lames.
  8. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que les soupapes de sortie (60, 62) sont formées par un seul composant.
  9. Pompe à vide à une ailette selon l'une quelconque des revendications précédentes, caractérisée en ce que l'orifice de sortie d'huile (50) est prévue dans un insert (38) et l'insert (38) fait partie de la surface circonférentielle intérieure (22).
  10. Pompe à vide à une ailette selon la revendication 4 et 9, caractérisée en ce que les deux inserts sont réalisés d'une seule pièce.
  11. Pompe à vide à une ailette selon l'une quelconque des revendications 4, 9 ou 10, caractérisée en ce que l'insert (38) est composé de matière plastique.
  12. Pompe à vide à une ailette selon l'une quelconque des revendications 4 ou 9 à 11, caractérisée en ce qu'entre l'insert (38) et la paroi de boîtier (36) se trouve la soupape de sortie (60, 62).
  13. Pompe à vide à une ailette selon l'une quelconque des revendications 4 ou 9 à 11, caractérisée en ce que la soupape de sortie 1 (60, 62) est intégrée dans l'insert (38).
EP05739759A 2004-07-09 2005-04-20 Pompe a vide a une ailette Expired - Fee Related EP1766239B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004034926A DE102004034926B3 (de) 2004-07-09 2004-07-09 Einflügelvakuumpumpe
PCT/EP2005/004212 WO2006005383A1 (fr) 2004-07-09 2005-04-20 Pompe a vide a une ailette

Publications (2)

Publication Number Publication Date
EP1766239A1 EP1766239A1 (fr) 2007-03-28
EP1766239B1 true EP1766239B1 (fr) 2008-12-03

Family

ID=34966845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05739759A Expired - Fee Related EP1766239B1 (fr) 2004-07-09 2005-04-20 Pompe a vide a une ailette

Country Status (6)

Country Link
EP (1) EP1766239B1 (fr)
KR (1) KR20070034090A (fr)
CN (1) CN101002022B (fr)
CA (1) CA2575780C (fr)
DE (2) DE102004034926B3 (fr)
WO (1) WO2006005383A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010044898A1 (de) * 2010-09-09 2012-03-15 Schwäbische Hüttenwerke Automotive GmbH Vakuumpumpe mit Lüftungseinrichtung
DE102013200410A1 (de) * 2013-01-14 2014-07-17 Schwäbische Hüttenwerke Automotive GmbH Gaspumpe mit Druckentlastung zur Reduzierung des Anfahrdrehmoments
EP1888920B1 (fr) 2005-05-30 2015-06-24 O.M.P. Officine Mazzocco Pagnoni S.r.l. Pompe a vide pour moteurs de vehicule et valve de retenue pour ladite pompe a vide

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE112007001576A5 (de) * 2006-07-21 2009-04-16 Ixetic Hückeswagen Gmbh Vakuumpumpe
DE112007001540B4 (de) * 2006-07-21 2016-05-12 Magna Powertrain Hückeswagen GmbH Vakuumpumpe
DE102007001593B4 (de) * 2007-01-04 2009-12-31 Joma-Polytec Kunststofftechnik Gmbh Vakuumpumpe
DE102007018247A1 (de) 2007-04-12 2008-10-16 Joma-Hydromechanic Gmbh Vakuumpumpe
DE102010007255A1 (de) 2010-02-09 2011-08-11 Bayerische Motoren Werke Aktiengesellschaft, 80809 Fluidpumpe
KR101307912B1 (ko) * 2011-07-27 2013-09-13 (주)모토닉 전동식 진공펌프
KR200470937Y1 (ko) * 2012-11-14 2014-02-05 금강정밀(주) 진공흡입차량에 구비된 진공펌프의 구조
CN104747446B (zh) * 2015-01-27 2017-06-20 长城汽车股份有限公司 一种真空泵、制动系统及汽车
EP3078858A1 (fr) * 2015-04-07 2016-10-12 WABCO Europe BVBA Compresseur à vide électrique lubrifié à l'huile, compact et hautement intégré
US20180156218A1 (en) * 2015-06-02 2018-06-07 Pierburg Pump Technology Gmbh Automotive vacuum pump
WO2017028914A1 (fr) * 2015-08-19 2017-02-23 Pierburg Pump Technology Gmbh Pompe à vide automobile lubrifiée

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GB191218254A (en) * 1911-08-10 1900-01-01 Baudot Joseph Improvements in Rotary Pumps and Motors.
US1781073A (en) * 1928-06-16 1930-11-11 Keystone Refrigerating Corp Rotary compressor
CH249478A (de) * 1947-01-21 1947-06-30 Wuetrich Ernst Drehkolbenmaschine zur Förderung flüssiger oder gasförmiger Medien.
GB1214185A (en) * 1968-02-28 1970-12-02 Labortechnik Ilmenau Veb Liquid sealed rotary gas pump
US4133617A (en) * 1976-01-27 1979-01-09 Thomas Roach Vane type pump with optional high rate of flow or high pressure characteristics
DE3307856C2 (de) * 1983-03-05 1997-10-23 Gnieser Gmbh Auto Technik Druckventil eines Rotationskolbenverdichters
DE4019854B4 (de) * 1989-07-10 2004-09-16 Saurer Gmbh & Co. Kg Flügelzellen-Vakuumpumpe
DE4033420C2 (de) * 1990-10-20 1999-09-02 Bosch Gmbh Robert Druckventil
DE4118934C2 (de) * 1991-06-08 2001-04-05 Bosch Gmbh Robert Kompressor
CN2219973Y (zh) * 1995-03-28 1996-02-14 陈时云 叶片式真空泵
JP2000205159A (ja) * 1999-01-11 2000-07-25 Hitachi Ltd ベ―ン式真空ポンプ
DE29920737U1 (de) * 1999-11-26 2000-02-03 Leybold Vakuum Gmbh Vakuumpumpe mit Auslass
ATE250722T1 (de) * 2000-03-15 2003-10-15 Joma Hydromechanic Gmbh Verdrängerpumpe
KR100408152B1 (ko) * 2001-08-14 2003-12-01 주식회사 우성진공 로터리 베인형 진공펌프의 실린더구조
EP1890040B1 (fr) * 2002-11-13 2012-06-27 ixetic Hückeswagen GmbH Pompe à vide

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1888920B1 (fr) 2005-05-30 2015-06-24 O.M.P. Officine Mazzocco Pagnoni S.r.l. Pompe a vide pour moteurs de vehicule et valve de retenue pour ladite pompe a vide
DE102010044898A1 (de) * 2010-09-09 2012-03-15 Schwäbische Hüttenwerke Automotive GmbH Vakuumpumpe mit Lüftungseinrichtung
DE102013200410A1 (de) * 2013-01-14 2014-07-17 Schwäbische Hüttenwerke Automotive GmbH Gaspumpe mit Druckentlastung zur Reduzierung des Anfahrdrehmoments
DE102013200410B4 (de) * 2013-01-14 2017-12-07 Schwäbische Hüttenwerke Automotive GmbH Gaspumpe mit Druckentlastung zur Reduzierung des Anfahrdrehmoments

Also Published As

Publication number Publication date
CN101002022B (zh) 2012-06-06
DE102004034926B3 (de) 2005-12-29
CA2575780A1 (fr) 2006-01-19
CA2575780C (fr) 2015-07-07
DE502005006154D1 (de) 2009-01-15
CN101002022A (zh) 2007-07-18
EP1766239A1 (fr) 2007-03-28
WO2006005383A1 (fr) 2006-01-19
KR20070034090A (ko) 2007-03-27

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