EP0737812B1 - Zahnradpumpe - Google Patents
Zahnradpumpe Download PDFInfo
- 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
Links
- 238000005086 pumping Methods 0.000 claims description 3
- 210000003734 kidney Anatomy 0.000 description 10
- 238000012856 packing Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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)
Description
- Fig. 1
- einen Axialschnitt der erfindungsgemäßen radpumpe,
- Fig. 2
- einen Radialschnitt entsprechend der Schnittlinie II-II in Fig. 1, außerdem zeigt die Schnittlinie I-I in Fig. 2 die Lage der Schnittebene der Fig. 1, und
- Fig. 3
- ein Schnittbild entsprechend der Schnittlinie III-III in Fig. 1.
Claims (5)
- Zahnradpumpe mit zumindest zwei miteinander kämmenden Förderzahnrädern (9, 10), deren Kopfkreise einander an Kreuzungspunkten (11, 12) beidseitig einer die Zahnradachsen enthaltenden Ebene (13) durchsetzen und deren Verzahnungen in Umlaufrichtung der Förderzahnräder vor dieser Ebene eine mit einer Druckleitung (5) und Druckniere (14) kommunizierende Druckzone und in Umlaufrichtung hinter dieser Ebene eine Saugzone bilden, die mit einer Saugleitung (6) und einer in Umlaufrichtung der Förderzahnräder über den saugseitigen Kreuzungspunkt (12) der Kopfkreise hinausreichenden Saugniere (15) kommuniziert, und mit einer in Umlaufrichtung der Förderzahnräder hinter der Saugzone bzw. -niere angeordneten Zuführzone (7), der von der Zahnradpumpe gefördertes überschüssiges Pumpmedium mit Überdruck bzw. erhöhter Strömungsgeschwindigkeit zuführbar ist,
dadurch gekennzeichnet,
daß die über den saugseitigen Kreuzungspunkt (12) hinaus erstreckte Saugniere (15) dort mit der Zuführzone (7) verbunden ist. - Zahnradpumpe nach Anspruch 1,
dadurch gekennzeichnet,
daß ein Förderzahnrad mit Innenverzahnung und ein Förderzahnrad mit Außenverzahnung zusammenwirken. - Zahnradpumpe nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
daß ein Saugkanal (6) mit auf beiden Stirnseiten der Förderzahnräder (9,10) angeordneten Mündungen bzw. Saugnieren (15) vorgesehen ist. - Zahnradpumpe nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
daß ein von einem Saugkanal (6) gesonderter Kanal (7) zur Belieferung der Zuführzone vorhanden ist. - Zahnradpumpe nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
daß die Zuführzone nur auf einer Stirnseite der Förderzahnräder (9,10) angeordnet ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19514021 | 1995-04-13 | ||
| DE19514021A DE19514021C2 (de) | 1995-04-13 | 1995-04-13 | Zahnradpumpe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0737812A1 EP0737812A1 (de) | 1996-10-16 |
| EP0737812B1 true EP0737812B1 (de) | 1999-07-28 |
Family
ID=7759641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96102934A Expired - Lifetime EP0737812B1 (de) | 1995-04-13 | 1996-02-28 | Zahnradpumpe |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5660531A (de) |
| EP (1) | EP0737812B1 (de) |
| JP (1) | JP2847634B2 (de) |
| DE (1) | DE19514021C2 (de) |
| ES (1) | ES2135805T3 (de) |
Families Citing this family (14)
| 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 |
| RU2405970C2 (ru) * | 2005-06-22 | 2010-12-10 | Стт Текнолоджис Инк., Э Джойнт Венче Оф Магна Пауэртрейн Инк. Энд Схв Гмбх | Зубчатый насос (варианты) |
| JP2009502502A (ja) | 2005-08-03 | 2009-01-29 | シーシーエムアイ コーポレイション | 表面活性固相不均一触媒の増強 |
| 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 (de) * | 2007-03-16 | 2011-03-02 | Yamada Manufacturing Co., Ltd. | Innenzahnradpumpe |
| 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 |
| US10072656B2 (en) | 2013-03-21 | 2018-09-11 | Genesis Advanced Technology Inc. | Fluid transfer device |
| 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)
| 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 |
-
1995
- 1995-04-13 DE DE19514021A patent/DE19514021C2/de not_active Expired - Fee Related
-
1996
- 1996-02-28 EP EP96102934A patent/EP0737812B1/de not_active Expired - Lifetime
- 1996-02-28 ES ES96102934T patent/ES2135805T3/es not_active Expired - Lifetime
- 1996-04-12 JP JP8114342A patent/JP2847634B2/ja not_active Expired - Lifetime
- 1996-04-15 US US08/635,266 patent/US5660531A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| US5660531A (en) | 1997-08-26 |
| DE19514021C2 (de) | 1998-02-12 |
| DE19514021A1 (de) | 1996-10-17 |
| JPH08284844A (ja) | 1996-10-29 |
| ES2135805T3 (es) | 1999-11-01 |
| EP0737812A1 (de) | 1996-10-16 |
| JP2847634B2 (ja) | 1999-01-20 |
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