EP0980477A1 - Unite de refoulement - Google Patents

Unite de refoulement

Info

Publication number
EP0980477A1
EP0980477A1 EP98922752A EP98922752A EP0980477A1 EP 0980477 A1 EP0980477 A1 EP 0980477A1 EP 98922752 A EP98922752 A EP 98922752A EP 98922752 A EP98922752 A EP 98922752A EP 0980477 A1 EP0980477 A1 EP 0980477A1
Authority
EP
European Patent Office
Prior art keywords
guide vanes
rotor
delivery unit
stator
unit according
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Withdrawn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
EP98922752A
Other languages
German (de)
English (en)
Inventor
Helmut Kohlhaas
Dieter Wilhelm
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
Mannesmann VDO 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 Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0980477A1 publication Critical patent/EP0980477A1/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Withdrawn legal-status Critical Current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
    • F04D3/00—Axial-flow pumps
    • F04D3/02—Axial-flow pumps of screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0646—Units comprising pumps and their driving means the pump being electrically driven the hollow pump or motor shaft being the conduit for the working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0666—Units comprising pumps and their driving means the pump being electrically driven the motor being of the plane gap type

Definitions

  • the invention relates to a delivery unit, in particular for delivering fuel or washing liquid in a motor vehicle, with a pump having guide vanes driven by an electric motor, the electric motor having a rotor and a stator and the guide vanes being arranged on the rotor and for movement in one fixed pump channel are provided.
  • Such delivery units are often used in today's motor vehicles as a fuel pump or as a washing liquid pump for a window cleaning system and are therefore known.
  • the rotor of the electric motor is cylindrical.
  • the guide vanes are arranged on one of the end faces of the rotor.
  • a housing of the electric motor also serves as a housing for the pump and forms the pump channel in its area adjacent to the guide vanes.
  • the pumped liquid is then passed through the electric motor between the rotor and a stator.
  • the conveyor unit thus consists of very few components and can therefore be assembled inexpensively.
  • a disadvantage of the known conveyor unit is that it has very large dimensions.
  • the delivery unit has a particularly large axial extent.
  • the invention is based on the problem of designing a conveyor unit of the type mentioned at the outset in such a way that it has the smallest possible dimensions and can be produced particularly cost-effectively.
  • This problem is solved according to the invention in that the stator forms at least part of the wall of the pump channel.
  • the guide blades are arranged in a region of the rotor opposite the stator.
  • the delivery unit according to the invention does not require a housing part designed as a pump channel for the pump and therefore has particularly small dimensions.
  • the guide vanes are arranged on an easily accessible, outside area of the rotor, as a result of which the delivery unit according to the invention can be produced particularly cost-effectively.
  • the guide vanes produce particularly small turbulences in the liquid to be conveyed if the guide vanes are designed to be helical. With this design, the liquid to be pumped is guided evenly and thus free of turbulence from the guide vanes. This turbulence-free delivery is particularly important with hot fuel because it tends to form gas bubbles. Gas bubbles in the liquid to be conveyed often lead to a sharp reduction in the delivery capacity of the delivery pump.
  • the liquid to be delivered can, according to another advantageous development of the invention, be conveyed with particularly little swirling if the guide blades are designed in a spiral shape.
  • the delivery unit according to the invention has a particularly high delivery rate with particularly small dimensions if the stator has guide vanes arranged in opposite directions in relation to the guide vanes of the rotor.
  • the guide vanes have a particularly low weight and thus a low moment of inertia if the guide vanes are made of plastic.
  • the electric motor can have a particularly low exhibit. This leads to a further reduction in the dimensions of the conveyor unit according to the invention.
  • the delivery unit according to the invention consists of particularly few components and can therefore be assembled inexpensively if the guide vanes of the stator are incorporated in a permanent magnet of the stator.
  • the guide vanes have high stability if the guide vanes have a rectangular cross section.
  • the guide vanes have a particularly small volume and thus low material costs if the guide vanes have a triangular cross section.
  • FIG. 1 shows a sectional view through a conveyor unit according to the invention with a cylindrical rotor
  • Figure 2 is a sectional view through a further embodiment of the conveyor unit according to the invention with an axially constructed electric motor.
  • the electric motor 1 shows a conveyor unit according to the invention with an electric motor 1.
  • the electric motor 1 has a stator 3, which is arranged in a rotationally fixed manner in a housing 2, and a cylinder which is rotatably mounted in the housing 2.
  • the stator 3 has an annular permanent magnet 6 provided on its inside with helical guide vanes 5.
  • Carbon brushes 7, 8 are arranged in the housing 2 and slide over a collector 9 when the rotor 4 rotates and supply the latter with electrical current.
  • the rotor 4 has coils 10 contacting the collector 9 and has on its outer surface helical guide vanes 11 arranged in opposite directions in relation to the guide vanes 5 of the stator 3.
  • the guide vanes 5, 11 each have a rectangular cross section.
  • FIG. 2 shows a further embodiment of the delivery unit according to the invention with an axially constructed electric motor 14.
  • the electric motor 14 has a disk-shaped stator 16 fastened in a housing 15 and a likewise disk-shaped rotor 17 opposite the stator 16 Stator 16 opposite end face a spiral, from the center to radially outer regions of the rotor guide vane 18.
  • a liquid can be conveyed from a radially inner region of the housing 15 through a pump channel 20 to a radially outer region.

Landscapes

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

Abstract

L'invention concerne une unité de refoulement destinée à refouler le carburant d'une automobile. Cette unité comprend un moteur électrique (1) muni d'un aubage fixe (11) monté sur la surface extérieure d'un rotor (4). Lorsque le rotor (4) tourne, l'aubage fixe (11) pompe le carburant dans un canal de pompage (19) entre le rotor (4) et un stator (3). L'unité de refoulement est de ce fait de structure particulièrement compacte et économique à produire.
EP98922752A 1997-05-03 1998-04-21 Unite de refoulement Withdrawn EP0980477A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19718791A DE19718791A1 (de) 1997-05-03 1997-05-03 Fördereinheit
DE19718791 1997-05-03
PCT/EP1998/002338 WO1998050701A1 (fr) 1997-05-03 1998-04-21 Unite de refoulement

Publications (1)

Publication Number Publication Date
EP0980477A1 true EP0980477A1 (fr) 2000-02-23

Family

ID=7828572

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98922752A Withdrawn EP0980477A1 (fr) 1997-05-03 1998-04-21 Unite de refoulement

Country Status (5)

Country Link
US (1) US6454547B1 (fr)
EP (1) EP0980477A1 (fr)
BR (1) BR9808708A (fr)
DE (1) DE19718791A1 (fr)
WO (1) WO1998050701A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1132615B1 (fr) * 2000-03-07 2006-11-08 Matsushita Electric Industrial Co., Ltd. Distributeur de fluide
US6679685B2 (en) 2000-03-07 2004-01-20 Matsushita Electric Industrial Co., Ltd. Method and device for discharging viscous fluids
US20030127924A1 (en) * 2002-01-08 2003-07-10 Pieter Van Dine Composite canning arrangement for motors
US6963151B2 (en) * 2002-02-04 2005-11-08 Electric Boat Corporation Composite lamina arrangement for canning of motors
US20040126254A1 (en) * 2002-10-31 2004-07-01 Chen Ching Jen Surface micromachined mechanical micropumps and fluid shear mixing, lysing, and separation microsystems
RU2265140C1 (ru) * 2004-03-23 2005-11-27 Закрытое акционерное общество "Старооскольский завод автотракторного электрооборудования" им.А.М.Мамонова" Погружной электронасос
US7226277B2 (en) * 2004-12-22 2007-06-05 Pratt & Whitney Canada Corp. Pump and method
GB2482861B (en) * 2010-07-30 2014-12-17 Hivis Pumps As Pump/motor assembly
US10711793B2 (en) 2018-03-27 2020-07-14 Delphi Technologies Ip Limited Fluid pump
US10876541B2 (en) * 2018-03-27 2020-12-29 Delphi Technologies Ip Limited Fluid pump

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE25569E (en) * 1964-05-05 Multistage fan
US2976808A (en) * 1958-06-06 1961-03-28 Hawkridge Metals Corp Rotary thrust pump
US2947467A (en) * 1958-08-01 1960-08-02 Westinghouse Electric Corp Combined axial air gap motor and gas compressor
US3870433A (en) * 1973-08-30 1975-03-11 Ivan Yakovlevich Raikov Worm pump
JPS5696198A (en) * 1979-12-27 1981-08-04 Matsushita Electric Ind Co Ltd Pump
JPS56146090A (en) * 1980-04-15 1981-11-13 Matsushita Electric Ind Co Ltd Feed pump of kerosene for combustion apparatus
JPS62261696A (ja) * 1986-05-08 1987-11-13 Mitsubishi Electric Corp タ−ボ分子ポンプ装置
DE4114989A1 (de) * 1991-05-08 1992-11-12 Vdo Schindling Rotationspumpe
JPH07180689A (ja) * 1993-12-22 1995-07-18 Toshiba Corp 再循環ポンプ
FR2723767B1 (fr) * 1994-08-19 1997-01-03 Cit Alcatel Pompe a vide turbomoleculaire
US5588812A (en) * 1995-04-19 1996-12-31 Nimbus, Inc. Implantable electric axial-flow blood pump
GB9525337D0 (en) * 1995-12-12 1996-02-14 Boc Group Plc Improvements in vacuum pumps
SE508445C2 (sv) * 1997-01-28 1998-10-05 Magnetal Ab Vakuumpump av höghastighetstyp
JPH11214877A (ja) * 1998-01-22 1999-08-06 Matsushita Electric Ind Co Ltd 電子機器の冷却装置およびその冷却ファン
US6135098A (en) * 1998-10-06 2000-10-24 Engineered Machine Products, Inc. Flow-through controllable air charger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9850701A1 *

Also Published As

Publication number Publication date
US6454547B1 (en) 2002-09-24
WO1998050701A1 (fr) 1998-11-12
BR9808708A (pt) 2000-07-11
DE19718791A1 (de) 1998-11-05

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Legal Events

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Owner name: SIEMENS AKTIENGESELLSCHAFT

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Effective date: 20011101