DE748939T1 - Electric motor pump unit - Google Patents

Electric motor pump unit

Info

Publication number
DE748939T1
DE748939T1 DE1996401120 DE96401120T DE748939T1 DE 748939 T1 DE748939 T1 DE 748939T1 DE 1996401120 DE1996401120 DE 1996401120 DE 96401120 T DE96401120 T DE 96401120T DE 748939 T1 DE748939 T1 DE 748939T1
Authority
DE
Germany
Prior art keywords
housing
unit according
electric motor
pump
intermediate plate
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.)
Pending
Application number
DE1996401120
Other languages
German (de)
Inventor
Yoshiaki Hamasaki
Hiroshi Oishi
Christian Trintignac
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.)
Hydroperfect International Inc
Original Assignee
Hydroperfect International Inc
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 Hydroperfect International Inc filed Critical Hydroperfect International Inc
Publication of DE748939T1 publication Critical patent/DE748939T1/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/24Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C14/26Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04CROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0042Systems for the equilibration of forces acting on the machines or pump
    • F04C15/0049Equalization of pressure pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Rotary Pumps (AREA)
  • Reciprocating Pumps (AREA)

Claims (8)

EP O 748 939 Al (96 401 120.9) 0748 939 PatentansprücheEP O 748 939 Al (96 401 120.9) 0748 939 Patent claims 1. Elektromotor-Pumpen-Aggregat mit einem Elektromotor (1), der in einem Gehäuse (2), das einen Vorratsbehälter bildet, angeordnet ist und die Eingangswelle (4) einer Zahnradpumpe antreibt, die in einem Pumpengehäuse (8) angeordnet ist, dadurch gekennzeichnet/ daß das Pumpengehäuse ausgehend von seinen Seiten und um die Zahnräder herum Dämpfungskammern (21, 22, 23, ...) bildet, die in Reihe miteinander verbunden sind und in denen die Hydraulikflüssigkeit zirkuliert.1. Electric motor-pump unit with an electric motor (1) which is arranged in a housing (2) which forms a reservoir and drives the input shaft (4) of a gear pump which is arranged in a pump housing (8), characterized in that the pump housing forms, starting from its sides and around the gears, damping chambers (21, 22, 23, ...) which are connected in series and in which the hydraulic fluid circulates. 2. Aggregat nach Anspruch 1, dadurch gekennzeichnet, daß die in den Dämpfungskammern (21, 22, 23, ...) zirkulierende Hydraulikflüssigkeit die unter hohem Druck stehende Flüssigkeit ist.2. Unit according to claim 1, characterized in that the hydraulic fluid circulating in the damping chambers (21, 22, 23, ...) is the fluid under high pressure. 3. Aggregat nach einem der Ansprüche l und 2, dadurch gekenn zeichnet, daß die Dämpfungskammern (21, 22, 23 ...) seitlich einerseits durch einen Zwischenplatte (9) und andererseits durch eine Scheibe (12) geschlossen sind, die ein Überdruckventil enthält, das zu seiner Entlastung mit einer Leitung (41) verbunden ist, die das Pumpengehäuse durchquert und im Inneren des Vorratskammergehäuses (2) des Elektromotors (1) mündet.3. Unit according to one of claims 1 and 2, characterized in that the damping chambers (21, 22, 23 ...) are closed laterally on the one hand by an intermediate plate (9) and on the other hand by a disc (12) which contains a pressure relief valve which, for its relief, is connected to a line (41) which passes through the pump housing and opens into the interior of the storage chamber housing (2) of the electric motor (1). 4. Aggregat nach einem der Ansprüche l bis 3, dadurch gekenn zeichnet, daß das Rückschlagventil (13) eine Kartusche (28) aufweist, die eine Bohrung (38) für einen Kolben (35) abgrenzt, der einen Schieber bildet, der gegenüber Radialbohrungen (37) angeordnet ist und unter der Einwirkung einer Druckfeder (32) steht.4. Unit according to one of claims 1 to 3, characterized in that the check valve (13) has a cartridge (28) which defines a bore (38) for a piston (35) which forms a slide which is arranged opposite radial bores (37) and is under the action of a compression spring (32). 5. Aggregat nach einem der Ansprüche 1 bis 4, dadurch gekenn zeichnet, daß der Kolben (35) unter Zwischenfügung eines
Stößels (33) und einer Kugel (34) der Einwirkung der Druckfeder (32) ausgesetzt ist.
5. Unit according to one of claims 1 to 4, characterized in that the piston (35) with the interposition of a
plunger (33) and a ball (34) is exposed to the action of the compression spring (32).
6. Aggregat nach einem der Ansprüche 1 bis 5, dadurch gekenn zeichnet, daß das Motorgehäuse (8) mit der Zwischenplatte (9), dem Motor (1) und der Scheibe (12), die das Überdruckventil aufweist, durch Bolzen (14) verbunden ist, die zusätzlich einen Ring (15) für die Befestigung des die Vorratskammer bildenden Gehäuses (2) halten.6. Unit according to one of claims 1 to 5, characterized in that the motor housing (8) is connected to the intermediate plate (9), the motor (1) and the disc (12) which has the pressure relief valve by bolts (14) which additionally hold a ring (15) for fastening the housing (2) forming the storage chamber. 7. Aggregat nach einem der Ansprüche 1 bis 6, dadurch gekenn zeichnet, daß Zapfen (10) vorgesehen sind, welche die Zentrierung des Pumpengehäuses (8) gegenüber der Zwischenplatte (9) gewährleisten, welche die Antriebswelle (4) der Zahnradpumpe lagert.7. Unit according to one of claims 1 to 6, characterized in that pins (10) are provided which ensure the centering of the pump housing (8) relative to the intermediate plate (9) which supports the drive shaft (4) of the gear pump. 8. Elektromotor-Pumpen-Aggregat im wesentlichen wie beschrieben und in den zugehörigen Zeichnungen dargestellt.8. Electric motor-pump unit essentially as described and shown in the accompanying drawings.
DE1996401120 1995-06-15 1996-05-23 Electric motor pump unit Pending DE748939T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9507132A FR2735534B1 (en) 1995-06-15 1995-06-15 HIGH COMPACTION ELECTRIC MOTOR AND HYDRAULIC PUMP ASSEMBLY

Publications (1)

Publication Number Publication Date
DE748939T1 true DE748939T1 (en) 1997-07-10

Family

ID=9480023

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1996401120 Pending DE748939T1 (en) 1995-06-15 1996-05-23 Electric motor pump unit

Country Status (4)

Country Link
EP (1) EP0748939A1 (en)
JP (1) JPH094571A (en)
DE (1) DE748939T1 (en)
FR (1) FR2735534B1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19524965A1 (en) * 1995-07-08 1997-01-09 Bosch Gmbh Robert Gear machine (pump or motor)
US6158983A (en) * 1997-04-24 2000-12-12 Trw Inc. Pump having muffler for attenuating noise
US5961309A (en) * 1997-04-24 1999-10-05 Trw Inc. Gear pump with noise attenuation
JPH1137060A (en) * 1997-07-16 1999-02-09 Koyo Seiko Co Ltd Gear pump
JP3956511B2 (en) * 1998-03-18 2007-08-08 株式会社デンソー Fuel pump
DE19833372A1 (en) * 1998-07-24 2000-01-27 Zahnradfabrik Friedrichshafen Gear pump for vehicle power steering, integrated in casing and surrounded by absorber cavity and induction cavity
EP0987439B1 (en) 1998-09-18 2003-11-26 Koyo Seiko Co., Ltd. Electric motor driven pump
FR2789446B1 (en) 1999-02-04 2002-03-08 Hydroperfect Internat Hpi HYDRAULIC PUMP OF THE GEAR TYPE AND ELECTRIC PUMP GROUP EQUIPPED WITH SUCH A PUMP
DE10249494A1 (en) * 2002-10-24 2004-05-13 Voith Turbo Gmbh & Co. Kg A motor pump assembly
KR100523269B1 (en) * 2002-12-12 2005-10-24 임락복 Low noise external gear pump with floating gear housing
JP4347859B2 (en) 2006-03-24 2009-10-21 本田技研工業株式会社 Oil pump
CN101512158B (en) * 2006-09-08 2013-11-06 株式会社岛津制作所 Gear pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460649A (en) * 1942-03-07 1949-02-01 Geza W Muiler Gear pump with flow cushioning means
US3362335A (en) * 1966-03-07 1968-01-09 Borg Warner Control system for fluid pressure source
DE2554470A1 (en) * 1975-12-04 1977-06-08 Daimler Benz Ag Gear type lubricating oil pump for IC engine - has pump wheel fixed to engine crank-shaft
GB2036873B (en) * 1978-12-01 1983-02-09 South Western Ind Res Silencing fluid pumps and motors
DE3925249C2 (en) * 1988-08-22 1995-08-17 Volkswagen Ag Pump arrangement with a pressure relief valve
DE4120757C2 (en) * 1990-06-25 2000-06-15 Zahnradfabrik Friedrichshafen Vane pump
DE4413515A1 (en) * 1993-05-11 1994-11-17 Barmag Luk Automobiltech Hydraulic pump

Also Published As

Publication number Publication date
EP0748939A1 (en) 1996-12-18
JPH094571A (en) 1997-01-07
FR2735534B1 (en) 1997-08-29
FR2735534A1 (en) 1996-12-20

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