EP1021655B1 - Förderpumpe - Google Patents
Förderpumpe Download PDFInfo
- Publication number
- EP1021655B1 EP1021655B1 EP98965618A EP98965618A EP1021655B1 EP 1021655 B1 EP1021655 B1 EP 1021655B1 EP 98965618 A EP98965618 A EP 98965618A EP 98965618 A EP98965618 A EP 98965618A EP 1021655 B1 EP1021655 B1 EP 1021655B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- degassing
- duct
- feed pump
- feed
- chambers
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/001—Preventing vapour lock
- F04D9/002—Preventing vapour lock by means in the very pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/188—Rotors specially for regenerative pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D5/00—Pumps with circumferential or transverse flow
- F04D5/002—Regenerative pumps
Definitions
- the invention relates to a feed pump with a driven, in a pump housing rotating impeller, in which in at least one guide vanes delimiting a wreath of vane chambers on its end faces is arranged with one in the area of the guide vanes in the Pump housing arranged partially annular channel, which with the Vane chambers for conveying a liquid from an inlet channel forms a delivery chamber to an outlet channel, and one in one of seen from the part-annular channel radially inner region of the pump housing arranged degassing channel with one from the feed pump has leading vent hole (see e.g. DE-A-196 07 573 or DE-A-42 09 126).
- Such feed pumps are known as peripheral or side channel pumps and are used, for example, to deliver fuel or Washer fluid of a window cleaning system of a motor vehicle used.
- the guide vanes in the delivery chamber generate one Circulation flow transverse to the direction of movement of the guide vanes.
- the degassing channel is used in the pumped Liquid gas bubbles through the degassing hole from the Drain the feed pump.
- fuel is delivered with the feed pump is, for example, when the motor vehicle is warm started important because the temperature of the fuel is particularly high and therefore gas bubbles often occur due to evaporation of the fuel.
- the Degassing hole in the delivery chamber removes air bubbles become. Such air bubbles often lead to foaming Liquid in the delivery chamber and thus also reduced Delivery rate of the feed pump.
- the degassing channel is located seen in the direction of rotation of the impeller immediately before Outlet channel and is in relation to the diameter of the partially annular channel small gap connected to the delivery chamber. The gas bubbles enter the degassing channel through the gap.
- the invention is based on the problem of a feed pump of the beginning mentioned type so that in the liquid to be pumped existing gas bubbles are removed as completely as possible.
- a feed pump With a feed pump, with the delivery chambers on both sides of the impeller are arranged, which to overflow the liquid from one Conveying chamber have a connection to the other conveying chamber, the inlet channel in one of the delivery chambers and the outlet channel in the other delivery chamber opens and the degassing channel in one Inlet channel housing part of the feed pump is arranged only part of the vane chambers connecting to the Has degassing duct, is a line for complex to lay the gas bubbles from the outlet-side area of the feed pump are avoided.
- the gas bubbles are caused by a rotation of the Impeller initially because of its compared to that to be promoted Low density liquid in a radially inner region of the delivery chamber pressed. Then the gas bubbles become special removed early from the production chamber. This will the gas bubbles before they are carried away by the circulation flow, almost completely separated from the liquid. Therefore the Cavitation in the part-ring-shaped channel kept particularly low.
- the delivery chamber could be the same as in the known delivery pump be connected to the degassing channel via a gap.
- the gap causes turbulence in the circulation flow of the Liquid. These turbulences lead to a reduction in efficiency the feed pump.
- turbulences in the Circulation flow to areas with high pressure and areas with low pressure. In the areas with low pressure, the liquid can evaporate at high temperatures and thus generate gas bubbles. These eddies become special according to the solution of the task kept low.
- the impeller is according to another advantageous development of the invention particularly inexpensive to manufacture if the connections of the Blade chambers with the degassing channel through a radial direction Widening of the blade chambers pointing to the axis of rotation of the impeller are formed.
- the feed pump according to the invention has a particularly high flow rate when the cross section of the degassing channel 2% to 12.5% of the cross section of the delivery chamber.
- the gas bubbles are the invention particularly reliable of the liquid to be pumped separated if the degassing duct extends over an angular range of Extends 30 ° to 180 °.
- Feed pump helps if the degassing channel extends over a Angle range extends from 45 ° to 110 °. Through this design a particularly small amount of the liquid to be pumped through the Degassing opening and thus out of the feed pump.
- FIG. 1 shows an inventive, driven by an electric motor 1, designed as a side channel pump feed pump 2 with a inlet-side housing part 3 and an outlet-side housing part 4.
- the Housing parts 3, 4 are biased against an annular spacer 5. Between the housing parts 3, 4 is a on a shaft 6 of the Electric motor 1 attached impeller 7 rotatably arranged. With a turn the impeller 7 is a liquid to be pumped from one in the inlet-side housing part 3 arranged inlet channel 8 into one in the outlet-side housing part 4 incorporated outlet channel 9 promoted.
- Vane chambers 10, 10a, 11, 11a lying opposite each other are connected.
- the housing parts 3, 4 of the feed pump 2 each have one in the area of the blade chambers 10, 10a, 11, 11a partially annular channel 14, 15.
- the part-annular channels 14, 15 form together with the vane chambers 10, 10a, 11, 11a delivery chambers 16, 17.
- the circulation flows are marked with arrows for clarification.
- degassing channel 19 In the inlet-side housing part 3 there is a vent hole 18 opening degassing channel 19 is arranged. Some of the vane chambers 10 are in the impeller 7 pockets 20 with the Degassing channel 19 connected. This will cause gas bubbles, for example led out of vaporous liquid from the delivery chambers 16, 17. Such gas bubbles arise especially when the feed pump 2 as a fuel pump in a fuel tank of a motor vehicle is used and the fuel has high temperatures.
- FIG. 2 shows the inlet-side housing part 3 from FIG. 1 of the Impeller 7 seen from.
- the beginning of the degassing duct 19 is in the direction of rotation of the impeller 7 seen approximately 15 ° behind the inlet duct 8 arranged and extends over an angular range of 45 °.
- this degassing channel 19 are present in the liquid to be pumped Gas bubbles reliably removed. An escape of those to be promoted Liquid and thus a reduction in the efficiency of the Feed pump 2 is kept particularly low, however.
- FIG. 3 shows the impeller 7 from FIG. 1 of the housing part on the inlet side 3 seen from.
- the individual blade chambers 10, 10a which are separated from one another by the guide vanes 12 are.
- the majority of the vane chambers 10a have the same dimensions like the partially annular channel 14.
- the remaining vane chambers 10 have the pockets 20 which extend into the region of FIG and 2 shown degassing channel 19 are performed.
- the contour of the vane chambers 10 having the pockets 20 is shown greatly enlarged in Figure 4.
- the vane chambers 10 have Area of the partially annular channels 14, 15 shown in FIG approximately circular cross-section.
- the pockets 20 have a Compared to the vane chambers 10, 11, the depth is considerably smaller. This can cause gas bubbles in the liquid to be pumped accumulate in the pockets 20 without them from the one in FIG Circulation flow shown arrows are detected. Therefore be the gas bubbles with a particularly small amount of to be promoted Liquid discharged through the degassing duct 19 shown in FIG. 1.
- FIG. 5 shows a second embodiment of the one shown in FIG Degassing duct 19 connected vane chambers 21, 22.
- the blade chambers 21, 22 are here in the direction of the axis of rotation of the Impeller 7 enlarged.
- the drawing is dash-dotted the contour of not connected to the degassing duct Blade chambers 23, 24 are shown.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
- Figur 1
- eine schematische Darstellung einer erfindungsgemäßen Förderpumpe in einem Längsschnitt,
- Figur 2
- ein einlaßseitiges Gehäuseteil eines Pumpengehäuses aus Figur 1,
- Figur 3
- ein Laufrad der erfindungsgemäßen Förderpumpe aus Figur 1 von dem einlaßseitigen Gehäuseteil aus gesehen,
- Figur 4
- einen Teilschnitt durch das Laufrad aus Figur 3 entlang der Linie IV - IV,
- Figur 5
- ein Teilschnitt durch eine weitere Ausführungsform des Laufrades.
Claims (9)
- Förderpumpe mit einem angetriebenen, sich in einem Pumpengehäuse drehenden Laufrad, in welchem in zumindest einer seiner Stirnseiten ein Kranz Schaufelkammern begrenzende Leitschaufeln angeordnet ist, mit einem im Bereich der Leitschaufeln in dem Pumpengehäuse angeordneten teilringförmigen Kanal, welcher mit den Schaufelkammern zum Fördern einer Flüssigkeit von einem Einlaßkanal zu einem Auslaßkanal eine Förderkammer bildet, und einen in einem von dem teilringförmigen Kanal aus gesehen radial inneren Bereich des Pumpengehäuses angeordneten Entgasungskanal mit einer aus der Förderpumpe herausführenden Entgasungsbohrung aufweist, dadurch gekennzeichnet, daß lediglich ein Teil der Schaufelkammern (10, 21) eine Verbindung zu dem Entgasungskanal (19) aufweist.
- Förderpumpe, bei der beidseitig des Laufrades Förderkammern angeordnet sind, welche zum Überströmen der Flüssigkeit von der einen Förderkammer in die andere Förderkammer eine Verbindung aufweisen, wobei der Einlaßkanal in eine der Förderkammern und der Auslaßkanal in die andere Förderkammer mündet, dadurch gekennzeichnet, daß der Entgasungskanal (19) in einem den Einlaßkanal (8) aufweisenden Gehäuseteil (3) der Förderpumpe (2) angeordnet ist und daß lediglich ein Teil der Schaufelkammern (10, 21) eine Verbindung zu dem Entgasungskanal (19) aufweist.
- Förderpumpe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Anteil der mit dem Entgasungskanal (19) verbundenen Schaufelkammern (10, 21) 10 bis 50% an der Gesamtzahl der Schaufelkammern (10, 10a, 21, 23) beträgt.
- Förderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verbindungen der Schaufelkammern (10) mit dem Entgasungskanal (19) durch in dem Laufrad (7) eingearbeitete Taschen (20) gebildet sind.
- Förderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Verbindungen der Schaufelkammern (21) mit dem Entgasungskanal (19) durch eine radiale in Richtung Drehachse des Laufrades (7) weisende Verbreiterung der Schaufelkammern (23) gebildet sind.
- Förderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Querschnitt des Entgasungskanals (19) 2 bis 12,5% des Querschnitts der Förderkammer (16, 17) beträgt.
- Förderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sich der Entgasungskanal (19) ausgehend vom Bereich des Einlaßkanals (8) über einen Winkelbereich von 30° bis 180° erstreckt.
- Förderpumpe nach Anspruch 7, dadurch gekennzeichnet, daß sich der Entgasungskanal (19) über einen Winkelbereich von 45° bis 110° erstreckt.
- Förderpumpe nach zumindest einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Entgasungsbohrung (18) ungefähr den gleichen Durchmesser hat wie der Entgasungskanal (19).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19744037 | 1997-10-06 | ||
DE19744037A DE19744037C1 (de) | 1997-10-06 | 1997-10-06 | Förderpumpe |
PCT/EP1998/006291 WO1999018356A1 (de) | 1997-10-06 | 1998-10-02 | Förderpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1021655A1 EP1021655A1 (de) | 2000-07-26 |
EP1021655B1 true EP1021655B1 (de) | 2002-03-27 |
Family
ID=7844696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98965618A Expired - Lifetime EP1021655B1 (de) | 1997-10-06 | 1998-10-02 | Förderpumpe |
Country Status (6)
Country | Link |
---|---|
US (1) | US6309173B1 (de) |
EP (1) | EP1021655B1 (de) |
BR (1) | BR9813023A (de) |
DE (2) | DE19744037C1 (de) |
ES (1) | ES2175847T3 (de) |
WO (1) | WO1999018356A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6547515B2 (en) * | 2001-01-09 | 2003-04-15 | Walbro Corporation | Fuel pump with vapor vent |
US7037066B2 (en) | 2002-06-18 | 2006-05-02 | Ti Group Automotive Systems, L.L.C. | Turbine fuel pump impeller |
US6932562B2 (en) * | 2002-06-18 | 2005-08-23 | Ti Group Automotive Systems, L.L.C. | Single stage, dual channel turbine fuel pump |
JP4271501B2 (ja) | 2003-06-06 | 2009-06-03 | 愛三工業株式会社 | 燃料ポンプ |
KR100568547B1 (ko) * | 2003-07-28 | 2006-04-07 | 현담산업 주식회사 | 개선된 형상의 임펠러를 구비하는 자동차용 터빈형전동기식연료펌프 |
DE102007038144A1 (de) * | 2007-08-13 | 2009-02-19 | Continental Automotive Gmbh | Seitenkanalpumpe zur Förderung von Kraftstoff in einem Kraftfahrzeug |
US9249806B2 (en) | 2011-02-04 | 2016-02-02 | Ti Group Automotive Systems, L.L.C. | Impeller and fluid pump |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4854830A (en) * | 1987-05-01 | 1989-08-08 | Aisan Kogyo Kabushiki Kaisha | Motor-driven fuel pump |
DE3925396A1 (de) * | 1989-08-01 | 1991-02-07 | Swf Auto Electric Gmbh | Kraftstoffoerderpumpe |
JPH073239B2 (ja) * | 1989-12-26 | 1995-01-18 | 三菱電機株式会社 | 円周流式液体ポンプ |
KR960001631B1 (ko) * | 1991-05-14 | 1996-02-03 | 미쓰비시덴키가부시키가이샤 | 원주류식(圓周流式) 액체펌프 |
DE4322370C2 (de) * | 1992-07-08 | 1998-10-29 | Mannesmann Vdo Ag | Flüssigkeitspumpe |
US5284417A (en) * | 1993-06-07 | 1994-02-08 | Ford Motor Company | Automotive fuel pump with regenerative turbine and long curved vapor channel |
DE4428254A1 (de) * | 1994-08-10 | 1996-02-15 | Bosch Gmbh Robert | Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges |
US5586858A (en) * | 1995-04-07 | 1996-12-24 | Walbro Corporation | Regenerative fuel pump |
DE19643728A1 (de) * | 1996-10-23 | 1998-04-30 | Mannesmann Vdo Ag | Förderpumpe |
DE19725249C2 (de) * | 1997-06-14 | 2002-05-02 | Siemens Ag | Förderpumpe |
-
1997
- 1997-10-06 DE DE19744037A patent/DE19744037C1/de not_active Expired - Fee Related
-
1998
- 1998-10-02 EP EP98965618A patent/EP1021655B1/de not_active Expired - Lifetime
- 1998-10-02 DE DE59803554T patent/DE59803554D1/de not_active Expired - Fee Related
- 1998-10-02 BR BR9813023-4A patent/BR9813023A/pt active Search and Examination
- 1998-10-02 US US09/486,935 patent/US6309173B1/en not_active Expired - Fee Related
- 1998-10-02 ES ES98965618T patent/ES2175847T3/es not_active Expired - Lifetime
- 1998-10-02 WO PCT/EP1998/006291 patent/WO1999018356A1/de active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
EP1021655A1 (de) | 2000-07-26 |
US6309173B1 (en) | 2001-10-30 |
DE19744037C1 (de) | 1999-06-02 |
WO1999018356A1 (de) | 1999-04-15 |
ES2175847T3 (es) | 2002-11-16 |
BR9813023A (pt) | 2000-08-15 |
DE59803554D1 (de) | 2002-05-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE19504079B4 (de) | Strömungspumpe zum Fördern von Kraftstoff aus einem Vorratsbehälter zur Brennkraftmaschine eines Kraftfahrzeugs | |
EP0934466B1 (de) | Förderpumpe | |
DE19725249C2 (de) | Förderpumpe | |
DE10019911A1 (de) | Förderpumpe | |
DE69413663T2 (de) | Turbopumpe und Zufuhrsystem mit einer Pumpe | |
EP1021655B1 (de) | Förderpumpe | |
WO2000047899A1 (de) | Seitenkanalpumpe | |
EP1103723B1 (de) | Kraftstoffpumpe | |
DE3887672T2 (de) | Pumpe mit gekapseltem Sauglaufrad. | |
EP1606516B1 (de) | Kraftstoffpumpe | |
EP0443354B1 (de) | Kreiselpumpe | |
EP1131560B1 (de) | Seitenkanalpumpe | |
DE19749404C1 (de) | Förderpumpe | |
EP1664543A1 (de) | Kraftstoffpumpe f r einen kraftstoffbeh lter | |
DE4427540A1 (de) | Kraftstoffversorgungseinrichtung | |
EP2513483B1 (de) | Kraftstoffpumpe | |
DE102008056106B4 (de) | Seitenkanalgebläse, insbesondere Sekundärluftgebläse für eine Verbrennungskraftmaschine | |
DE10062451A1 (de) | Förderpumpe | |
WO2022189489A1 (de) | Kreiselpumpe mit einlaufrippen | |
DE2004166A1 (de) | Vorpumpe,insbesondere fuer leichtfluechtige Fluessigkeiten | |
EP2776722B1 (de) | Kreiselpumpe zum fördern von flüssigkeiten in einem kraftfahrzeug | |
DE19716086C2 (de) | Seitenkanalpumpe | |
DE102023118148B3 (de) | Kreiselpumpe | |
DE10054590B4 (de) | Kraftstoffpumpe | |
DE102007026533A1 (de) | Kraftstoffpumpe |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20000225 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 20010801 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB |
|
REF | Corresponds to: |
Ref document number: 59803554 Country of ref document: DE Date of ref document: 20020502 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20020626 |
|
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2175847 Country of ref document: ES Kind code of ref document: T3 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20021230 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20051017 Year of fee payment: 8 Ref country code: ES Payment date: 20051017 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20051025 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20051219 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070501 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20061002 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20070629 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061002 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20061003 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061031 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20061003 |