EP0737812B1 - Pompe à engrenages - Google Patents

Pompe à engrenages Download PDF

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Publication number
EP0737812B1
EP0737812B1 EP96102934A EP96102934A EP0737812B1 EP 0737812 B1 EP0737812 B1 EP 0737812B1 EP 96102934 A EP96102934 A EP 96102934A EP 96102934 A EP96102934 A EP 96102934A EP 0737812 B1 EP0737812 B1 EP 0737812B1
Authority
EP
European Patent Office
Prior art keywords
pump
suction
gear
gears
zone
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
EP96102934A
Other languages
German (de)
English (en)
Other versions
EP0737812A1 (fr
Inventor
Hans Merkle
Ralf Brunst
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0737812A1 publication Critical patent/EP0737812A1/fr
Application granted granted Critical
Publication of EP0737812B1 publication Critical patent/EP0737812B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C15/062—Arrangements for supercharging the working space

Definitions

  • the invention relates to a gear pump with at least two intermeshing feed gears, the tip circles of which are each other at the crossing points on one side the gearwheel axes enforce the containing plane and their teeth in the direction of rotation the feed gears in front of this level with one a pressure zone and pressure kidney communicating pressure zone and form a suction zone in the direction of circulation behind this level, the one with a suction line and one in the direction of circulation the feed gears over the suction-side crossing point of the Communicating head circles reaching and with one in the direction of rotation of the conveyor gears behind the suction zone or kidney arranged feed zone, the gear pump pumped excess pump medium with overpressure or increased flow rate can be supplied via the channel is.
  • the object of the invention is now a gear pump of the beginning specified type to improve even further.
  • the invention is based on the general idea of education avoid cavitation bubbles at all and not only to fill up cavitation bubbles afterwards.
  • the gear pump according to the invention thus acts on the one hand as Feed pump, the pumping medium leads to a consumer, and on the other hand, as a charge pump, which by generating a Flow at high speed or increased pressure Filling the delivery rooms works.
  • a housing which is essentially made up of two housing halves 1 and 2, which are with each other facing flat surfaces arranged one on top of the other is an essentially circular disc-shaped, trained as a recess in the housing half 2 Interior 3 arranged from a perpendicular to Disc level extended, eccentric to the circular disc arranged hole 4 is penetrated and at its End faces in the area of the lower half in FIG. 2 communicates with a total of three channels 5 to 7 that are recessed in the housing halves 1 and 2.
  • first conveyor gear 9 Inside the bore 4 is a not shown Axis rotatably arranged, the rotatably with an in Interior 3 housed first conveyor gear 9 connected which is dimensioned so that the tooth tips are tangential circumferential circle on the concave side of the packing 8 is tight.
  • the conveyor gear 9 meshes with another feed gear 10, which as Internal gear ring is formed and with its tip circle running tangentially over the toothing heads tightly encloses the packing 8 on its concave side. Otherwise, the feed gear 10 is dimensioned so that it with its outer circumference close to the circular inner circumferential wall of the interior 3 is present.
  • Both feed gears 9 and 10 are dimensioned axially so that they with their End faces close to the adjacent end faces of the Interior 3 concern.
  • channel 6 has on both ends the conveyor gears 9 and 10 arranged as so-called suction kidneys 15 trained mouths that in the direction of rotation of the feed gears 9 and 10 the axial plane 13 to the point of intersection 12.
  • At least one of the suction kidneys 15 is in the direction of rotation the conveyor gears 9 and 10 via the crossing point 12 extends and connected there with the channel 7, the when operating the pump with pump medium from pressure channel 5 is supplied.
  • the suction channel is 6 for example, connected to an oil supply during the Pressure channel 5 leads to a consumer, from which then the oil in turn to the essentially unpressurized oil supply can flow off. Accordingly, oil from the Suction channel 6 promoted to pressure channel 5.
  • the packing 8 may be omitted if necessary.
  • the corresponding will Fill the free space as far as possible with pump medium.
  • the illustrated internal gear pump an external gear pump to provide.
  • the conveyor gears 9 and 10 behind the suction side Crossing point 12 with an additional channel the toothing spaces of the feed gears 9 and 10 communicates and this additional channel with excess pumped pumped medium becomes. This can cause cavitation even at very high speeds be avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (5)

  1. Pompe à engrenage comprenant au moins deux roues dentées de transport (9, 10) engrenant l'une avec l'autre, dont les cercles du sommet des dents s'intersectent en des points de croisement (11, 12) situés de part et d'autre d'un plan (13) passant par les axes des roues dentées et dont les dentures forment devant ce plan, par rapport au sens de rotation des roues dentées, une zone sous pression communiquant avec un conduit sous pression (15) et un espace nériforme sous pression (14) et, derrière ce plan, dans le sens de la rotation. une zone d'aspiration qui communique avec un conduit d'aspiration (6) et un espace nériforme d'aspiration (15) se prolongeant au-delà du point de croisement (12), côté aspiration, des cercles du sommet des dents dans le sens de la rotation des roues dentées de transport, ladite pompe comprenant par ailleurs une zone d'amenée (7) qui est disposée dans le sens de la rotation des roues dentées de transport derrière la zone ou l'espace nériforme d'aspiration et sur laquelle du fluide excédentaire de pompage transporté par la pompe à engrenage peut être dirigé avec surpression et à vitesse accrue de circulation,
       caractérisée
       en ce que l'espace nériforme d'aspiration (15) qui se prolonge au-delà du point de croisement (12) côté aspiration est raccordé en cet emplacement à la zone d'amenée (7).
  2. Pompe à engrenage selon la revendication 1,
       caractérisée
       en ce qu'une roue dentée de transport à denture interne et une roue dentée de transport à denture extérieure coopèrent l'une avec l'autre.
  3. Pompe à engrenage selon la revendication 1 ou 2,
       caractérisée
       en ce qu'un canal d'aspiration (6) comportant des embouchures et des espaces nériformes (15) disposés sur les deux côtés frontaux des roues dentées de transport (9, 10) est prévu.
  4. Pompe à engrenage selon l'une des revendications 1 à 3,
       caractérisée
       en ce qu'un canal (7) distinct d'un canal d'aspiration (6) est présent pour l'alimentation de la zone d'amenée.
  5. Pompe à engrenage selon l'une des revendications 1 à 4,
       caractérisée
       en ce que la zone d'amenée n'est disposée que sur un côté frontal des roues dentées de transport (9, 10).
EP96102934A 1995-04-13 1996-02-28 Pompe à engrenages Expired - Lifetime EP0737812B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19514021A DE19514021C2 (de) 1995-04-13 1995-04-13 Zahnradpumpe
DE19514021 1995-04-13

Publications (2)

Publication Number Publication Date
EP0737812A1 EP0737812A1 (fr) 1996-10-16
EP0737812B1 true EP0737812B1 (fr) 1999-07-28

Family

ID=7759641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96102934A Expired - Lifetime EP0737812B1 (fr) 1995-04-13 1996-02-28 Pompe à engrenages

Country Status (5)

Country Link
US (1) US5660531A (fr)
EP (1) EP0737812B1 (fr)
JP (1) JP2847634B2 (fr)
DE (1) DE19514021C2 (fr)
ES (1) ES2135805T3 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3815805B2 (ja) * 1994-11-15 2006-08-30 富士重工業株式会社 自動変速機のポンプ吐出量制御装置
DE69721092T2 (de) * 1996-01-19 2003-12-11 Aisin Seiki K.K., Kariya Ölpumpenanlage
US6089841A (en) * 1998-06-26 2000-07-18 General Motors Corporation Crescent gear pump
JP2002098063A (ja) * 2000-09-26 2002-04-05 Aisin Seiki Co Ltd オイルポンプ
WO2006136014A1 (fr) * 2005-06-22 2006-12-28 Stt Technologies Inc., A Joint Venture Of Magna Powertrain Inc. And Shw Gmbh Pompe à engrenages à orifice d’admission amélioré
KR20080052572A (ko) 2005-08-03 2008-06-11 씨씨엠아이 코포레이션 표면-활성 불균질 고체 상 촉매의 향상
KR100724387B1 (ko) * 2005-09-28 2007-06-04 엘지전자 주식회사 밀폐형 압축기의 오일 펌핑 장치
JP2007255369A (ja) * 2006-03-24 2007-10-04 Jatco Ltd 変速機のオイルポンプ構造
EP1970570B1 (fr) * 2007-03-16 2011-03-02 Yamada Manufacturing Co., Ltd. Pompe à engrenage interne
DE102008054474B4 (de) * 2008-12-10 2013-07-25 Zf Friedrichshafen Ag Innenzahnradpumpe mit optimiertem Geräuschverhalten
US20130071280A1 (en) * 2011-06-27 2013-03-21 James Brent Klassen Slurry Pump
WO2014146190A1 (fr) 2013-03-21 2014-09-25 James Klassen Pompe à boue
JP6361573B2 (ja) * 2015-05-14 2018-07-25 株式会社デンソー 燃料ポンプ
US11067076B2 (en) 2015-09-21 2021-07-20 Genesis Advanced Technology Inc. Fluid transfer device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2774309A (en) * 1953-08-14 1956-12-18 Sundstrand Machine Tool Co Pump
DE1553014A1 (de) * 1963-03-04 1969-08-21 Otto Eckerle Einrichtung an Pumpen zur Verminderung der Geraeuschentwicklung
US3182596A (en) * 1963-05-31 1965-05-11 Borg Warner Hydraulic systems and pumps
US3356032A (en) * 1966-01-13 1967-12-05 Emerson Electric Co Hydraulic circuit
US3291060A (en) * 1966-03-21 1966-12-13 Lucas Industries Ltd Gear pumps
US3635604A (en) * 1969-12-02 1972-01-18 Danfoss As Equipment for delivering liquid, particularly oil burners
US3730656A (en) * 1971-03-22 1973-05-01 Dowty Technical Dev Ltd Hydraulic apparatus
DE2116317A1 (de) * 1971-04-03 1972-10-12 Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Zahnradpumpe
US3824041A (en) * 1972-08-01 1974-07-16 C Rystrom Positive displacement liquid pump
DE2933493A1 (de) * 1979-08-18 1981-03-26 Daimler-Benz Aktiengesellschaft, 70567 Stuttgart Zahnradpumpe
DE3410015C2 (de) * 1984-03-19 1995-09-28 Schwaebische Huettenwerke Gmbh Innenläuferzahnradölpumpe für Kraftfahrzeugmotoren und automatische Kraftfahrzeuggetriebe
JPS63297788A (ja) * 1987-05-29 1988-12-05 Toyooki Kogyo Co Ltd 内接歯車ポンプ
JPH04272488A (ja) * 1991-02-28 1992-09-29 Nippondenso Co Ltd 回転ポンプ

Also Published As

Publication number Publication date
EP0737812A1 (fr) 1996-10-16
JPH08284844A (ja) 1996-10-29
DE19514021C2 (de) 1998-02-12
JP2847634B2 (ja) 1999-01-20
US5660531A (en) 1997-08-26
ES2135805T3 (es) 1999-11-01
DE19514021A1 (de) 1996-10-17

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