EP0831231A3 - Gear pump - Google Patents

Gear pump Download PDF

Info

Publication number
EP0831231A3
EP0831231A3 EP97114967A EP97114967A EP0831231A3 EP 0831231 A3 EP0831231 A3 EP 0831231A3 EP 97114967 A EP97114967 A EP 97114967A EP 97114967 A EP97114967 A EP 97114967A EP 0831231 A3 EP0831231 A3 EP 0831231A3
Authority
EP
European Patent Office
Prior art keywords
chamber
pump
convey
pressure
bypass 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.)
Granted
Application number
EP97114967A
Other languages
German (de)
French (fr)
Other versions
EP0831231B1 (en
EP0831231A2 (en
Inventor
Stanislaw Bodzak
Hanspeter Mayer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0831231A2 publication Critical patent/EP0831231A2/en
Publication of EP0831231A3 publication Critical patent/EP0831231A3/en
Application granted granted Critical
Publication of EP0831231B1 publication Critical patent/EP0831231B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/24—Control 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
    • F04C14/26—Control 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
    • 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
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/04—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for reversible machines or pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Rotary Pumps (AREA)

Abstract

Förderpumpe mit einem in einer Pumpkammer (3) rotierend angetriebenen Paar miteinander kämmender Zahnräder (5,9), die ein Fördermedium aus einem mit einem Vorratstank verbundenen Ansaugraum (11) entlang einem zwischen der Stirnfläche der Zahnräder (5,9) und der Umfangswand der Pumpkammer (3) gebildeten Förderkanal (15) in einen Druckraum (13) fördern und mit einem den Ansaugraum (11) mit dem Druckraum (13) verbindenden Bypasskanal (41), der mittels eines darin angeordneten Druckventils (53) aufsteuerbar ist.
Dabei ist der das Druckventil (53) aufnehmende Bypasskanal (41) in einem das Gehäuse (1) der Förderpumpe verschließenden Gehäusedeckel (21) angeordnet.

Figure 00000001
Delivery pump with a rotatingly driven in a pump chamber (3) pair of intermeshing gears (5,9) which convey a medium from a suction chamber (11) connected to a storage tank along a between the end face of the gears (5,9) and the peripheral wall of the Convey pumping chamber (3) formed delivery channel (15) into a pressure chamber (13) and with a bypass channel (41) connecting the suction chamber (11) to the pressure chamber (13), which can be opened by means of a pressure valve (53) arranged therein.
The bypass channel (41) receiving the pressure valve (53) is arranged in a housing cover (21) which closes the housing (1) of the feed pump.
Figure 00000001
EP97114967A 1996-09-19 1997-08-29 Gear pump Expired - Lifetime EP0831231B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19638335 1996-09-19
DE19638335A DE19638335C2 (en) 1996-09-19 1996-09-19 Feed pump

Publications (3)

Publication Number Publication Date
EP0831231A2 EP0831231A2 (en) 1998-03-25
EP0831231A3 true EP0831231A3 (en) 1999-03-03
EP0831231B1 EP0831231B1 (en) 2003-01-08

Family

ID=7806190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97114967A Expired - Lifetime EP0831231B1 (en) 1996-09-19 1997-08-29 Gear pump

Country Status (3)

Country Link
US (1) US6116859A (en)
EP (1) EP0831231B1 (en)
DE (2) DE19638335C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19913406A1 (en) * 1999-03-25 2000-04-20 Bosch Gmbh Robert Fuel feed pump to feed fuel from an intake chamber into a pressure chamber contains regulator piston to influence hydraulic pump action, and is without bypass channel
DE19913804A1 (en) * 1999-03-26 2000-09-28 Bosch Gmbh Robert Fuel feed pump
DE10002613A1 (en) * 2000-01-22 2001-07-26 Volkswagen Ag Fuel supply for a motor vehicle internal combustion engine
DE102005042040B3 (en) * 2005-09-02 2007-05-16 Fresenius Medical Care De Gmbh gear pump
US8360746B2 (en) * 2006-05-10 2013-01-29 Metaldyne Company, Llc Inverted pressure regulating valve for an engine oil pump
DE102010050163A1 (en) 2010-10-30 2012-05-03 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Displacement machine for combustion engine of motor vehicle, has nozzle that is arranged at one end of return line to re-circulate pressurized fluid injected in direction of suction opening so that displacement is accelerated
DE102022202606A1 (en) 2022-03-16 2023-09-21 Robert Bosch Gesellschaft mit beschränkter Haftung Fuel delivery device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170786B (en) * 1959-07-21 1964-05-21 Friedrich Reichert Maschf Gear pump suitable for both directions of rotation
DE7507541U (en) * 1975-03-11 1976-09-23 Werdohler Pumpenfabrik, Rudolf Rickmeier Gmbh, 5980 Werdohl GEAR PUMP
EP0301886A2 (en) * 1987-07-29 1989-02-01 HYDRECO, INC. (a Delaware corporation) Variable discharge gear pump with energy recovery
FR2706541A1 (en) * 1993-06-11 1994-12-23 Renault Vehicules Ind Method for regulating the pressure and delivery flow rate of a positive-displacement pump, and positive-displacement pump for implementing the method
DE4441505A1 (en) * 1994-11-22 1996-05-23 Bosch Gmbh Robert Fuel feed pump for a fuel injection pump for internal combustion engines

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA711046A (en) * 1965-06-08 Dresser Industries Pressure relief means for pump
US2276107A (en) * 1939-05-09 1942-03-10 John P Simons Gear pump
DE2254316A1 (en) * 1972-11-06 1974-05-16 Agfa Gevaert Ag COMBINED REGULATING AND PRESSURE RELIEF VALVE
ES445021A1 (en) * 1976-02-10 1977-06-01 Bendiberica Sa Gear pump
US5338161A (en) * 1991-06-19 1994-08-16 Dana Corporation Gear pump having internal bypass valve
US5236317A (en) * 1991-09-26 1993-08-17 Permco, Inc. Gear pump valving system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1170786B (en) * 1959-07-21 1964-05-21 Friedrich Reichert Maschf Gear pump suitable for both directions of rotation
DE7507541U (en) * 1975-03-11 1976-09-23 Werdohler Pumpenfabrik, Rudolf Rickmeier Gmbh, 5980 Werdohl GEAR PUMP
EP0301886A2 (en) * 1987-07-29 1989-02-01 HYDRECO, INC. (a Delaware corporation) Variable discharge gear pump with energy recovery
FR2706541A1 (en) * 1993-06-11 1994-12-23 Renault Vehicules Ind Method for regulating the pressure and delivery flow rate of a positive-displacement pump, and positive-displacement pump for implementing the method
DE4441505A1 (en) * 1994-11-22 1996-05-23 Bosch Gmbh Robert Fuel feed pump for a fuel injection pump for internal combustion engines

Also Published As

Publication number Publication date
DE19638335C2 (en) 2000-07-20
EP0831231B1 (en) 2003-01-08
US6116859A (en) 2000-09-12
DE59709077D1 (en) 2003-02-13
EP0831231A2 (en) 1998-03-25
DE19638335A1 (en) 1998-04-02

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