EP1021655B1 - Pompe d'alimentation - Google Patents

Pompe d'alimentation Download PDF

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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
Application number
EP98965618A
Other languages
German (de)
English (en)
Other versions
EP1021655A1 (fr
Inventor
Peter Marx
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP1021655A1 publication Critical patent/EP1021655A1/fr
Application granted granted Critical
Publication of EP1021655B1 publication Critical patent/EP1021655B1/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
    • 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.

Claims (9)

  1. Pompe refoulante avec un rotor de pompe entraíné tournant dans un boítier de pompe dans lequel une couronne d'aubes de guidage délimitant des chambres d'aubes est disposée dans au moins l'un des côtés frontaux, avec un canal en forme de partie d'anneau qui est disposé dans le boítier de pompe dans la région des aubes de guidage et formant avec les chambres d'aubes une chambre de refoulement pour le refoulement d'un liquide depuis un canal d'entrée et jusqu'à un canal de sortie, et avec un canal de dégazage doté d'un alésage de dégazage conduisant hors de la pompe de refoulement et disposé dans une région intérieure du boítier de pompe, radialement lorsqu'il est vu depuis le canal en forme de partie d'anneau, caractérisée en ce que seule une partie des chambres d'aube (10, 21) présente une liaison au canal de dégazage (19).
  2. Pompe refoulante dans laquelle des chambres de refoulement sont disposées des deux côtés du rotor de pompe et présentent pour le débordement du liquide une liaison allant d'une chambre de refoulement à l'autre chambre de refoulement, le canal d'entrée débouchant dans l'une des chambres de refoulement et le canal de sortie dans l'autre chambre de refoulement, caractérisée en ce que le canal de dégazage (19) est disposé dans une partie de boítier (3) de la pompe refoulante (2) qui présente le canal d'entrée (8) et en ce que seule une partie des chambres d'aube (10, 21) présente une liaison au canal de dégazage (19).
  3. Pompe refoulante selon l'une des revendications précédentes, caractérisée en ce que la partie des chambres d'aube (10, 21) reliée au canal de dégazage (19) représente de 10 à 50 % du nombre total des chambres d'aubes (10, 10a, 21, 23).
  4. Pompe refoulante selon au moins l'une des revendications précédentes, caractérisée en ce que les liaisons des chambres d'aubes (10) avec le canal de dégazage (19) sont formées par des poches (20) ménagées dans le rotor de pompe (7).
  5. Pompe refoulante selon au moins l'une des revendications précédentes, caractérisée en ce que les liaisons des chambres d'aubes (21) avec le canal de dégazage (19) sont formées par un élargissement radial des chambres d'aubes (23)qui est orienté en direction de l'axe de rotation du rotor de pompe (7).
  6. Pompe refoulante selon au moins l'une des revendications précédentes, caractérisée en ce que la section transversale du canal de dégazage (19) représente de 2 à 12,5 % de la section transversale de la chambre de refoulement (16, 17).
  7. Pompe refoulante selon au moins l'une des revendications précédentes, caractérisée en ce que le canal de dégazage (19) s'étend sur une plage angulaire de 30° à 180° à partir de la région du canal d'entrée (8).
  8. Pompe refoulante selon la revendication 7, caractérisée en ce que le canal de dégazage (19) s'étend sur une plage angulaire de 45° à 110°.
  9. Pompe refoulante selon au moins l'une des revendications précédentes, caractérisée en ce que l'alésage de dégazage (18) présente sensiblement le même diamètre que le canal de dégazage (19).
EP98965618A 1997-10-06 1998-10-02 Pompe d'alimentation Expired - Lifetime EP1021655B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19744037A DE19744037C1 (de) 1997-10-06 1997-10-06 Förderpumpe
DE19744037 1997-10-06
PCT/EP1998/006291 WO1999018356A1 (fr) 1997-10-06 1998-10-02 Pompe d'alimentation

Publications (2)

Publication Number Publication Date
EP1021655A1 EP1021655A1 (fr) 2000-07-26
EP1021655B1 true EP1021655B1 (fr) 2002-03-27

Family

ID=7844696

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98965618A Expired - Lifetime EP1021655B1 (fr) 1997-10-06 1998-10-02 Pompe d'alimentation

Country Status (6)

Country Link
US (1) US6309173B1 (fr)
EP (1) EP1021655B1 (fr)
BR (1) BR9813023A (fr)
DE (2) DE19744037C1 (fr)
ES (1) ES2175847T3 (fr)
WO (1) WO1999018356A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6547515B2 (en) * 2001-01-09 2003-04-15 Walbro Corporation Fuel pump with vapor vent
US6932562B2 (en) * 2002-06-18 2005-08-23 Ti Group Automotive Systems, L.L.C. Single stage, dual channel turbine fuel pump
US7037066B2 (en) 2002-06-18 2006-05-02 Ti Group Automotive Systems, L.L.C. Turbine fuel pump impeller
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE59803554D1 (de) 2002-05-02
US6309173B1 (en) 2001-10-30
DE19744037C1 (de) 1999-06-02
BR9813023A (pt) 2000-08-15
WO1999018356A1 (fr) 1999-04-15
ES2175847T3 (es) 2002-11-16
EP1021655A1 (fr) 2000-07-26

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