EP1451473A1 - Roue mobile pour pompe regenerative - Google Patents

Roue mobile pour pompe regenerative

Info

Publication number
EP1451473A1
EP1451473A1 EP02781137A EP02781137A EP1451473A1 EP 1451473 A1 EP1451473 A1 EP 1451473A1 EP 02781137 A EP02781137 A EP 02781137A EP 02781137 A EP02781137 A EP 02781137A EP 1451473 A1 EP1451473 A1 EP 1451473A1
Authority
EP
European Patent Office
Prior art keywords
impeller
webs
impeller according
fuel
feed 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.)
Granted
Application number
EP02781137A
Other languages
German (de)
English (en)
Other versions
EP1451473B1 (fr
Inventor
Bernd Jäger
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.)
Continental Automotive GmbH
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 EP1451473A1 publication Critical patent/EP1451473A1/fr
Application granted granted Critical
Publication of EP1451473B1 publication Critical patent/EP1451473B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/188—Rotors specially for regenerative pumps

Definitions

  • the invention relates to an impeller for a delivery pump designed as a side channel pump, in particular for delivering fuel in a fuel tank, which has on its end faces a vane that defines vane chambers that are spaced from its radially outer edge and is provided for arrangement between housing parts of the delivery pumps ,
  • Delivery pumps for delivering fuel from fuel tanks are often designed as side channel pumps and are known in practice.
  • the fuel is delivered from an inlet channel via the rings of the vane chambers and partially annular channels arranged in the housing parts to an outlet channel.
  • the vane chambers arranged on both end faces of the impeller when the fuel is delivered, a higher pressure is created on one end face than on the other end face. This pressure difference is particularly high in the case of axially flow-through side channel pumps in which the vane chambers are connected to one another.
  • a disadvantage of the known feed pump is that the pressure difference at the end faces of the impeller results in flow losses due to flow around the outer edge of the impeller. These flow losses lead to a reduction in the efficiency of the feed pump. Furthermore, dirt particles contained in the fuel are introduced between the impeller and the housing parts. As a result, the impeller wears particularly at its edge, which leads to an increase in flow losses.
  • the invention is based on the problem of designing an impeller of the type mentioned at the outset in such a way that flow losses and wear on the edge of the impeller are kept particularly low.
  • this problem is solved in that a profiling which opposes a flow is arranged on the radially outer edge.
  • This design prevents fuel from flowing over from one end face to the other end face. This initially leads to a significant reduction in the flow over the edge of the impeller according to the invention and thus to low flow losses of the feed pump. Furthermore, the entry of dirt particles into the gap between the impeller and the housing parts is greatly reduced by reducing the flow over the edge of the impeller according to the invention. This leads to particularly low wear of the impeller in its radially outer area. Flow losses in the feed pump are therefore kept permanently low by the inventive design of the impeller. Another advantage of the invention is that flow losses in a known feed pump can be reduced by simply changing the impeller.
  • the impeller according to the invention could, for example, have a labyrinth seal if the housing parts are designed accordingly. However, this leads to a high manufacturing cost of the impeller.
  • the impeller according to the invention is structurally particularly simple if the profiling has radially projecting webs spaced apart from one another in the circumferential direction. It helps to further simplify the manufacture of the impeller according to the invention if the webs are arranged essentially parallel to one another.
  • the profiling can completely compensate for the pressure difference on the end faces of the impeller if the webs are inclined with respect to the axis of rotation of the impeller.
  • the webs are designed like guide vanes of a peripheral pump, as a result of which fuel overflow over the edge can be almost completely prevented.
  • the profiling is able to generate an equally high counter pressure on the end face of the impeller with a high pressure if the webs are inclined in the direction of rotation rising from the intended pressure side to the intended suction side.
  • fuel delivery through the webs can be reliably avoided if an angle of inclination ⁇ of the webs to the vertical of the end faces is approximately 1 ° to 50 °.
  • Noises of the feed pump provided with the impeller according to the invention can be largely avoided if the webs are arranged irregularly distributed over the circumference.
  • FIG. 1 shows a sectional view through a feed pump with an impeller according to the invention
  • 2 shows a view of the edge of the impeller according to the invention from FIG. 1.
  • FIG. 1 shows a feed pump 2 driven by an electric motor 1 for delivering fuel in a motor vehicle.
  • the feed pump 2 has an impeller 4 fastened to a shaft 3 of the electric motor 1 and two housing parts 6, 7, which are kept at a distance from one another by means of a spacer ring 5.
  • the feed pump 2 delivers fuel from an inlet channel 8 to an outlet channel 9 arranged on the side of the electric motor 1
  • a ring of blade chambers 10, 11 is arranged in each of the end faces of the impeller 4.
  • Opposing blade chambers 10, 11 are connected to one another within the impeller 4.
  • the housing parts 6, 7 have, in the region of the vane chambers 10, 11, partially annular ducts 12, 13 extending from the inlet duct 8 to the outlet duct 9.
  • FIG. 1 shows that a profile 14 is arranged on the radially outer edge of the impeller 4.
  • the housing parts 6, 7 and the spacer ring 5 are at a short distance from the impeller 4.
  • circulation flows are generated in the blade chambers 10, 11 and the part-ring-shaped channels 12, 13 and fuel is thus conveyed from the inlet channel 8 to the outlet channel 9.
  • the direction of rotation of the impeller 4 and the flows of the fuel are marked with arrows in the drawing.
  • a greater pressure is created on the side of the impeller 4 facing the outlet channel 9 than on the side of the inlet channel 8.
  • An overflow of fuel through a gap from the side of the outlet channel 9 to the side of the inlet channel 8 leads to flow losses. These flow losses are reduced by the profiling 14 arranged on the edge.
  • FIG 2 shows the impeller 4 in the installation position described in Figure 1 in a view of the edge.
  • the profiling 14 has webs 15 spaced apart from one another in the circumferential direction protruding from the edge.
  • the webs 15 are arranged inclined at an angle ⁇ to the vertical of the impeller 4.
  • the angle ⁇ is approximately 40 ° in the illustrated embodiment.
  • the webs 15 are inclined so as to rise from the pressure side to be arranged near the outlet channel 9 of the feed pump 2 from FIG. 1 to the suction side provided for arrangement near the inlet channel 8.
  • the webs 15 are arranged unevenly distributed over the circumference of the impeller 4.

Landscapes

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

Abstract

Selon l'invention, il est prévu sur la périphérie extérieure d'une roue mobile (4) pour pompe de refoulement (2) conçue comme une pompe régénérative, une section profilée (14) comportant des entretoises (15). Vues dans le sens de rotation de la roue mobile (4), lesdites entretoises (15) sont disposées de manière inclinée ascendante, entre le côté refoulement prévu et le côté aspiration prévu. Les pertes d'écoulement entre la zone de la roue mobile (4), qui est extérieure dans le sens radial, et les parties du carter (6, 7) de la pompe de refoulement (2) sont de ce fait maintenues à un niveau particulièrement bas.
EP02781137A 2001-12-07 2002-10-14 Roue mobile pour pompe regenerative Expired - Lifetime EP1451473B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10160199 2001-12-07
DE10160199A DE10160199B4 (de) 2001-12-07 2001-12-07 Laufrad
PCT/DE2002/003898 WO2003050419A1 (fr) 2001-12-07 2002-10-14 Roue mobile pour pompe regenerative

Publications (2)

Publication Number Publication Date
EP1451473A1 true EP1451473A1 (fr) 2004-09-01
EP1451473B1 EP1451473B1 (fr) 2009-12-09

Family

ID=7708406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02781137A Expired - Lifetime EP1451473B1 (fr) 2001-12-07 2002-10-14 Roue mobile pour pompe regenerative

Country Status (4)

Country Link
US (1) US7029230B2 (fr)
EP (1) EP1451473B1 (fr)
DE (2) DE10160199B4 (fr)
WO (1) WO2003050419A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE729453C (de) 1941-11-16 1942-12-16 App U Maschinenfabrik Karl Dic Laufrad fuer Umlaufpumpen mit seitlichem Leitkanal
JPS57157055A (en) * 1981-03-20 1982-09-28 Nippon Denso Co Ltd Electric fuel pump for vehicle
DE3128372A1 (de) * 1981-07-17 1983-02-03 Friedrich 8541 Röttenbach Schweinfurter "peripheralkanalpumpe"
DE4243225A1 (de) * 1992-12-19 1994-06-23 Pierburg Gmbh Brennstoffpumpe
JP3228446B2 (ja) 1993-03-30 2001-11-12 株式会社デンソー ウエスコポンプ
DE19634734A1 (de) * 1996-08-28 1998-03-05 Bosch Gmbh Robert Strömungspumpe
US6604905B1 (en) 2000-06-20 2003-08-12 Visteon Global Technologies, Inc. Fuel pumps with reduced contamination effects

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03050419A1 *

Also Published As

Publication number Publication date
EP1451473B1 (fr) 2009-12-09
DE10160199A1 (de) 2003-06-18
DE10160199B4 (de) 2005-08-25
WO2003050419A1 (fr) 2003-06-19
DE50214082D1 (de) 2010-01-21
US7029230B2 (en) 2006-04-18
US20050013712A1 (en) 2005-01-20

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