EP1105649A1 - Pompe a liquide destinee notamment a transporter le carburant - Google Patents

Pompe a liquide destinee notamment a transporter le carburant

Info

Publication number
EP1105649A1
EP1105649A1 EP00943561A EP00943561A EP1105649A1 EP 1105649 A1 EP1105649 A1 EP 1105649A1 EP 00943561 A EP00943561 A EP 00943561A EP 00943561 A EP00943561 A EP 00943561A EP 1105649 A1 EP1105649 A1 EP 1105649A1
Authority
EP
European Patent Office
Prior art keywords
rotation
wall part
outlet opening
delivery channel
liquid pump
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.)
Withdrawn
Application number
EP00943561A
Other languages
German (de)
English (en)
Inventor
Johann Rothkopf
Luciano Zorzin
Dirk Bruhs
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 EP1105649A1 publication Critical patent/EP1105649A1/fr
Withdrawn legal-status Critical Current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
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00—Pumps with circumferential or transverse flow
    • 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
    • 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
    • F04D5/007—Details of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/50—Inlet or outlet
    • F05B2250/503—Inlet or outlet of regenerative pumps

Definitions

  • Liquid pump in particular for pumping fuel
  • the invention relates to a liquid pump, in particular for delivering fuel according to the preamble of claim 1.
  • Such a liquid pump is known from DE 195 04 564 AI.
  • This liquid pump has a rotating, impeller-driven pump impeller.
  • the pump impeller is arranged in a pump chamber delimited in the direction of its axis of rotation by a wall part in each case.
  • a suction opening is formed in one wall part and an outlet opening is formed in the other wall part.
  • an annular delivery channel is arranged in each of the end faces of the wall parts facing the pump impeller.
  • the suction opening opens in the area of the delivery channel start of one wall part and the outlet opening opens in the area of the delivery channel end of the other wall part.
  • the outlet opening has a width in the radial direction with respect to the axis of rotation of the pump impeller which is at least as large as the width of the delivery channel in the radial direction. It has been found that this known liquid pump may cause a disturbing noise, in particular in the form of a high-frequency whistle, which is caused when the liquid being pumped out flows through the outlet opening.
  • the liquid pump according to the invention with the features according to claim 1 or according to independent claim 3 has the advantage that noise generation when the liquid flows out through the at least one outlet opening is avoided or at least reduced.
  • FIG. 1 shows a liquid pump in an axial longitudinal section
  • FIG. 2 shows the liquid pump in a cross section along line II-II in FIG. 1 in an enlarged view according to a first exemplary embodiment
  • FIG. 3 shows the liquid pump in cross section according to a second exemplary embodiment.
  • a liquid pump shown in FIGS. 1 to 3 is used, in particular, to deliver fuel from a storage container to the internal combustion engine of a motor vehicle.
  • the liquid pump is combined with an electric drive motor, not shown, to form a delivery unit, the liquid pump and drive motor being arranged in a common housing.
  • the liquid pump has a pump impeller 10, each of which has a ring from its two end faces of vanes 12 or blades arranged spaced apart from one another over the circumference of the pump impeller 10.
  • the wings 12 can be connected to one another at their radially outer ends via a ring 14.
  • the blades 12 can be flat, can be arranged radially or inclined to a radial direction with respect to the axis of rotation of the impeller and can alternatively also be curved.
  • the impeller 10 is driven by the drive motor, not shown, for example via a shaft 16 rotating about an axis 18.
  • the impeller 10 is arranged in a pump chamber 20 which is delimited in the direction of the axis of rotation 18 of the impeller 10 by two wall parts 22 and 24 arranged at a distance from one another.
  • the pump chamber 20 is delimited by a hollow cylindrical wall part 26, which can be arranged as a separate ring between the wall parts 22 and 24 or, as shown in FIG. 1, can be formed in one piece with one of the wall parts 22, 24.
  • the wall part 24 arranged towards the drive motor is as
  • the wall parts 22, 24, 26 can consist, for example, of plastic, of metal, in particular light metal casting, of ceramic material or another suitable material.
  • annular conveying channel 28 In the end face 23 of the suction cover 22 facing the impeller 10, an annular conveying channel 28 is formed, which lies opposite the rim of the vanes 12 of the impeller 10.
  • annular conveyor channel 32 In the end face 25 of the impeller 25 of the Intermediate housing 24 is also formed an annular conveyor channel 32 opposite the rim of the vanes 12 of the impeller 10, at least one outlet opening 34 opens out in the region of its end.
  • the conveying channels 28 and 32 are arranged approximately congruently and extend in the circumferential direction 11 of the impeller 10 from the suction opening 30 to at least one outlet opening 34 and end separated by an interrupter 29 and 33, respectively.
  • the conveying channels 28 and 32 can have a rounded cross-section, for example, but can also have any other cross-sectional shape.
  • the liquid pump is shown enlarged in a cross section according to a first embodiment.
  • the outlet opening 34 is elongated in the circumferential direction 11 of the impeller 10 and has a width b in the radial direction with respect to the axis of rotation 18 of the impeller 10, which width is less than the width B of the delivery channel 32 in the radial direction.
  • the width b of the outlet opening 34 is approximately 0.2 to 0.8 times, preferably 0.4 to 0.6 times the width B of the Delivery channel 32.
  • the outlet opening 34 is preferably arranged at least approximately centrally in the radial direction with respect to the axis of rotation 18 of the impeller 10 at the bottom of the delivery channel 32.
  • the outlet opening 34 is curved and extends at least approximately in the form of a circular arc section coaxial with the axis of rotation 18 of the impeller 10.
  • the outlet opening 34 extends in the circumferential direction 11 of the impeller 10, viewed over an angle ⁇ of approximately 10 ° to 40 °, preferably approximately 20 ° to 30 °.
  • the outlet opening 34 can extend to the end of the conveying channel 32 or, as shown in FIG , However, can also be arranged approximately radially to the axis of rotation 18 or taper. Due to the elongated design of the outlet opening 34 in the direction of rotation 11 of the impeller 10, no disturbing noises occur when the fuel flows out through it.
  • the liquid pump is shown enlarged in a cross section according to a second embodiment.
  • a plurality of outlet openings 44 are provided.
  • five outlet openings 44a, b, c, d, e are provided, and fewer or more than five outlet openings 44 can also be provided.
  • the outlet openings 44a, b, c, d, e are arranged offset to one another in the direction of rotation 11 of the impeller 10 and are separated from one another.
  • the outlet openings 44a, b, c, d, e have a width b in the radial direction with respect to the axis of rotation 18 of the impeller 10, which width is less than the width B of the delivery channel 32 in the radial direction.
  • the width b of the outlet openings 44a, b, c, d, e is approximately 0.2 to 0.8 times, preferably 0.4 to 0.6 times the width B of the conveying channel 32.
  • the outlet openings 44a, b, c, d, e are over in the circumferential direction 11 of the impeller 10 an angle ⁇ of approximately 10 ° to approximately 50 °, preferably distributed of approximately 20 ° to 40 °.
  • the angular distances between the individual outlet openings 44a, b, c, d, e can each be the same or different.
  • the outlet openings 44a, b, c, d, e are preferably distributed over an arc section which is at least approximately coaxial with the axis of rotation 18 of the impeller 10.
  • Outlet openings 44a, b, c, d, e are preferably arranged at least approximately centrally in the radial direction with respect to the axis of rotation 18 of the impeller 10 at the bottom of the conveying channel 32.
  • the last outlet opening 44e seen in the direction of rotation 11 of the impeller 10 can be as in FIG.
  • FIG. 3 shown to be arranged at the end of the conveying channel 32 or alternatively before the end of the conveying channel 32.
  • the outlet openings 44a, b, c, d, e have, for example, a round cross section and can be drilled into the intermediate housing 24.
  • the outlet openings 44a, b, c, d, e can also have any other cross-sectional shape and are formed during the manufacture of the intermediate housing 24.
  • the intermediate housing 24 can, for example, consist of plastic and be produced by injection molding.
  • the size of the outlet openings 44a, b, c, d, e can each be the same or different. Because of the outlet openings 44a, b, c, d, e which are distributed in the direction of rotation 11 of the impeller 10, no disturbing noises occur when the fuel flows out through them.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne une pompe à liquide présentant un rotor (10) doté d'ailettes (12) et entraîné en rotation dans une chambre. La chambre est limitée dans la direction de l'axe de rotation (19) du rotor (10) par des éléments paroi (24) dont la face frontale (25) qui est tournée vers le rotor (10), est pourvue d'un canal de transport (32) annulaire. Un orifice d'aspiration débouche dans la zone initiale du canal de transport d'un élément paroi et un orifice d'évacuation (34) débouche dans la zone terminale du canal de transport (32) de l'autre élément paroi (24). L'orifice d'évacuation (34) a une forme allongée dans le sens de rotation (11) du rotor (10) et présente dans le sens radial par rapport à l'axe de rotation (18) du rotor (10) une largeur (b) qui est inférieure à la largeur (B) du canal de transport (32) dans le sens radial. A la place de l'orifice d'évacuation (34) allongé, on peut également prévoir plusieurs orifices d'évacuation séparés qui sont décalés les uns par rapport aux autres dans le sens de rotation (11) du rotor (10).
EP00943561A 1999-06-18 2000-05-04 Pompe a liquide destinee notamment a transporter le carburant Withdrawn EP1105649A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19927789 1999-06-18
DE19927789A DE19927789A1 (de) 1999-06-18 1999-06-18 Flüssigkeitspumpe, insbesondere zum Fördern von Kraftstoff
PCT/DE2000/001427 WO2000079133A1 (fr) 1999-06-18 2000-05-04 Pompe a liquide destinee notamment a transporter le carburant

Publications (1)

Publication Number Publication Date
EP1105649A1 true EP1105649A1 (fr) 2001-06-13

Family

ID=7911645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00943561A Withdrawn EP1105649A1 (fr) 1999-06-18 2000-05-04 Pompe a liquide destinee notamment a transporter le carburant

Country Status (9)

Country Link
US (1) US6474937B1 (fr)
EP (1) EP1105649A1 (fr)
JP (1) JP2003502580A (fr)
KR (1) KR20010079617A (fr)
CN (1) CN1314975A (fr)
BR (1) BR0006877A (fr)
DE (1) DE19927789A1 (fr)
HU (1) HUP0103393A3 (fr)
WO (1) WO2000079133A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4489450B2 (ja) * 2004-01-30 2010-06-23 愛三工業株式会社 燃料ポンプ
JP4396750B2 (ja) * 2007-09-14 2010-01-13 株式会社デンソー 燃料ポンプ
JP6507998B2 (ja) * 2015-11-03 2019-05-08 株式会社デンソー 燃料ポンプ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392675A (en) * 1965-10-22 1968-07-16 Ford Motor Co Centrifugal pump
US3951567A (en) * 1971-12-18 1976-04-20 Ulrich Rohs Side channel compressor
US5017086A (en) 1989-05-08 1991-05-21 Vickers Incorporated Hydraulic periphery pumps
US5642981A (en) * 1994-08-01 1997-07-01 Aisan Kogyo Kabushiki Kaisha Regenerative pump
DE19504564A1 (de) 1995-02-11 1996-08-14 Bosch Gmbh Robert Flüssigkeitspumpe
JPH09126178A (ja) 1995-10-27 1997-05-13 Aisan Ind Co Ltd 燃料ポンプ装置
JP3956511B2 (ja) * 1998-03-18 2007-08-08 株式会社デンソー 燃料ポンプ

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0079133A1 *

Also Published As

Publication number Publication date
JP2003502580A (ja) 2003-01-21
KR20010079617A (ko) 2001-08-22
WO2000079133A1 (fr) 2000-12-28
DE19927789A1 (de) 2000-12-21
BR0006877A (pt) 2001-08-07
HUP0103393A2 (hu) 2002-01-28
HUP0103393A3 (en) 2002-02-28
CN1314975A (zh) 2001-09-26
US6474937B1 (en) 2002-11-05

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