EP0974009A1 - Ensemble de refoulement pour carburant - Google Patents

Ensemble de refoulement pour carburant

Info

Publication number
EP0974009A1
EP0974009A1 EP99913069A EP99913069A EP0974009A1 EP 0974009 A1 EP0974009 A1 EP 0974009A1 EP 99913069 A EP99913069 A EP 99913069A EP 99913069 A EP99913069 A EP 99913069A EP 0974009 A1 EP0974009 A1 EP 0974009A1
Authority
EP
European Patent Office
Prior art keywords
delivery unit
permanent magnet
fuel delivery
impeller
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Withdrawn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
EP99913069A
Other languages
German (de)
English (en)
Inventor
Klaus Dobler
Michael Huebel
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 EP0974009A1 publication Critical patent/EP0974009A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/048—Arrangements for driving regenerative pumps, i.e. side-channel 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
    • 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
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/002—Regenerative pumps
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/278—Surface mounted magnets; Inset magnets

Definitions

  • the invention relates to a fuel delivery unit of the type defined in the preamble of claim 1.
  • a delivery unit of this type for delivering fuel from a fuel tank to an internal combustion engine of a motor vehicle (WO 95/25885)
  • the delivery pump and the electric motor for driving it are arranged in a housing next to one another.
  • the impeller which is equipped with vanes or impeller blades on its circumference, is non-rotatably seated on a shaft of the rotor or rotor, which carries a rotor or armature winding which is grooved and which rotates in a stator or stator covered with permanent magnet segments. Power is supplied to the armature winding via a one on the rotor shaft
  • Commutator or commutator and two current brushes resting radially on the commutator under spring pressure.
  • the fuel delivery unit according to the invention with the characterizing features of claim 1 has the advantage that by combining the rotating parts of the delivery unit, that is, the impeller of the feed pump and the rotor of the electric motor, to a single part a very - 2 -
  • the conveyor unit can be made very flat, that is to say with an extremely small axial dimension.
  • the increasing outside diameter of the conveyor unit in connection with the usual design of the conveyor unit is not only not a disadvantage, but also opens up the possibility for additional measures to improve the efficiency of the conveyor unit. Dispensing with the commutator and current brushes means that brush wear is eliminated, so that the service life of the conveyor unit is increased.
  • the electric motor is designed as a DC motor, the necessary commutation of the current in the stator winding is carried out electronically.
  • the cylindrical pump chamber is delimited by two radially extending, axially spaced side walls and a peripheral wall connecting the two side walls along their circular periphery.
  • the impeller is opposite the side walls with a gap distance, and the inner surface of the stator formed by a grooved laminated core forms the peripheral wall of the pump chamber.
  • the impeller has a plurality of axially open, spaced apart from one another in the circumferential direction
  • Vane chambers delimiting radial impeller blades, which are interconnected by an outer ring.
  • the permanent magnets are attached to the outer ring and are preferably made of plastic ferrites when the conveyor unit is made of plastic. - 3 -
  • plastic-bonded rare earth magnets can be used, which are preferably embedded in the plastic matrix of the impeller.
  • Sidewall of the pump chamber formed a groove-like side channel open to the pump chamber concentrically to the impeller axis with an interrupter web remaining between the side channel end and the side channel beginning, based on the flow direction.
  • the beginning of the side channel of at least one side channel stands with a suction opening and the end of the side channel with one
  • Drainage channels are present.
  • Fig. 1 shows a longitudinal or meridialsch itt of the conveyor unit, the section in the upper half of the illustration by the trained - 4 -
  • Fig. 2 is a plan view of an impeller from above
  • Fig. 3 is a plan view of the impeller from Fig. 1
  • Fig. 4 is an oblique section through the impeller 3 along the line
  • the delivery unit shown schematically in FIG. 1 serves to deliver fuel from a reservoir to the internal combustion engine of a motor vehicle.
  • the delivery unit is usually arranged in connection with a filter bowl as a so-called tank installation unit in the fuel tank or fuel tank of the motor vehicle.
  • the delivery unit has a delivery pump 11 designed as a flow or side channel pump and an electric motor 12 driving the delivery pump 11.
  • Feed pump 11 and electric motor 12 are accommodated in a common housing 13.
  • the structure and operation of the feed pump 11 is known and described for example in DE 4020 521 AI.
  • a pump chamber 14 is formed in the housing 13 and is delimited in the axial direction by two radially extending, axially spaced side walls 141, 142 and in the circumferential direction by a peripheral wall 143 connecting the two side walls 141, 142 along their circular periphery.
  • a pump or impeller 16 is arranged in the pump chamber 14 and sits on a shaft 17 in a rotationally fixed manner.
  • the shaft 17 is received with two shaft ends in two bearings 18, 19 which are formed in the two side walls 141, 142.
  • the axis of the shaft 17 is colinear with the impeller axis 161 and the axis of the pump chamber 14.
  • the impeller 16 has a large number of circumferentially spaced, radial impeller blades in 20, of which only two can be seen in the drawing.
  • the impeller blades 20 are connected to one another by an outer ring 21.
  • Two impeller blades 20 delimit between them a blade chamber 22 which is axially open.
  • the impeller 16 lies opposite the side walls 141, 142 at a gap distance, and the outer ring 21 encloses a radial gap with the peripheral wall 143 of the pump chamber 14.
  • each side wall 141, 142 of the pump chamber 14 a groove-like side channel 23 or 24 is formed, which is open towards the pump chamber 14 and is arranged concentrically to the impeller axis 161 and an interrupter web remains in the circumferential direction almost over 330 ° from the beginning of a side channel.
  • the side channel start 231 and 241 of the side channels 23, 24 can be seen in the lower sectional view.
  • the side channel end is offset by approximately 330 ° circumferential angle.
  • Each side channel 23, 24 is connected via a radially aligned inflow channel 25 or 26 to a suction opening 27 of the delivery unit.
  • the side channel ends of the two side channels 23, 24, which cannot be seen here, are each connected to a pressure port of the delivery unit via an outlet channel.
  • the side channel ends of the two side channels 23, 24, which cannot be seen here, are each connected to a pressure port of the delivery unit via an outlet channel.
  • only the side channel beginning 231 of the side channel 23 is connected to an inflow channel 25 and only the side channel end of the side channel 24 is connected to an outflow channel.
  • the inflow channel 26 on the right in the sectional view is omitted, and the
  • side channel 24 shows a cross section, as indicated by dashed lines in the drawing.
  • the inflow channels 25, 26 can be arranged axially, but the radial alignment has the advantage of lower flow losses and can be easily implemented because of the relatively large outer diameter of the delivery unit.
  • the electric motor 12 which is designed with a so-called internal pole rotor, has a stator 28 and a rotor 29 in a known manner, which is integrated into the impeller 16 of the feed pump 11 in order to achieve an extremely flat design of the feed unit. Its magnetic poles are formed by permanent magnet segments 30 which are fastened on the outer ring 21 of the impeller 16. In order to achieve a favorable magnetic inference, the outer ring 21 is preferably made of servo-magnetic material.
  • the stator 28 is arranged as a grooved laminated core 31 coaxially to the impeller axis 161 in the housing 13 such that the inner ring surface of the laminated core 31 forms the peripheral wall 143 of the pump chamber 14.
  • An armature winding 32 is usually arranged in the grooves of the laminated core 31, of which only the two end winding ends 321 and 322 and the two connecting lines 323 and 324 can be seen in the schematic drawing.
  • the electric motor 12 is commutated electronically.
  • the impeller 16 of the feed pump 11 is made of plastic, there is a manufacturing advantage if the permanent magnet segments 30 are made of plastic or are plastic-bonded rare earth magnets.
  • FIG. 2 shows the impeller 16 from FIG. 1 in an oblique view from above.
  • the impeller blades 20 from FIG. 1 are not shown here in this FIG. 2 in a depression 34 which runs in a circular shape around the impeller axis 161.
  • cavities 36 arranged on a circumference 35 of the impeller 16 are shown.
  • the cavities 36 in this impeller 16 extend over its entire thickness.
  • Permanent magnets 37 are located in the cavities 36. These are preferably made from a hard ferrite magnet.
  • the permanent magnets 37 are inserted in a positive manner in the cavities 36.
  • a permanent magnet 37 has a conical shape. This is repeated as a negative in the design - 7 -
  • the conical shape has the advantage that when the impeller 16 rotates, the centrifugal forces ensure that a clamping force is formed or strengthened between the permanent magnets 37 and the adjacent webs 38. In this way, the higher the rotational speed of the impeller 16, the more firmly the permanent magnets 37 are held.
  • these can also have a different external shape, for example in the form of stair treads, a spherical or barrel-like section or else a cylinder section. The selected shape, however, in interaction with the webs 38, should be able to transfer the centrifugal force
  • FIG. 3 shows the impeller 16 from FIG. 2 in a top view.
  • the permanent magnets 37 can have a circumferential length Lu on the circumference 35 which is sufficient for sufficient acceleration due to the electromagnetic interaction forces with the stator.
  • a radial length L R of the permanent magnet 37 is preferred, which is in a ratio of L U / L R between 0J5 and 3.5 with the circumferential length Lu. This has the advantage of avoiding demagnetizing effects between the permanent magnets 37.
  • 3 shows three permanent magnets 37.1, 37.2, 37.3.
  • a first permanent magnet 37.1 and a third permanent magnet 37.3 have the same pole orientation, while the second permanent magnet 37.2 lying between them has an opposite polarity. Due to the - 8th -
  • the aim is to achieve a friction angle Reib R of 2 to 12 °.
  • An angle of around 3 ° to 5 ° is preferred. This makes it possible to further increase the extremely high degree of utilization of the circumference 35 for the provision of the permanent magnets 37.
  • the cone-like shape of the permanent magnets 37 enables them to hold in the cavities 36 according to a further development, without having to be glued there. This in turn saves one work step.
  • the material which forms the cavities 36 is preferably chosen to be elastic or plastic, for example to set a slight press fit. A clamping force is then inevitably formed between the permanent magnets 37 and the dimensions of the cavities 36. Such a press fit also allows the permanent magnets 37 to be easily installed in the impeller 16 to form the rotor and the impeller 16 as an installation part.
  • Fig. 4 shows the impeller 16 of Fig. 3 in a cross section along the
  • FIG. 5 shows, based on FIG. 4, a second impeller with a stop 40. If, for example, the second impeller 39 is manufactured first, the permanent magnets 37 need only be inserted into the respective cavities up to the stop 40 in a subsequent step. This must of course be designed so that the formation of side channels, as shown in Fig. 1, is not hindered.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

L'invention concerne un ensemble de refoulement pour carburant, comportant une pompe régénérative et un moteur électrique qui entraîne cette dernière. Le moteur électrique présente un enroulement d'induit, un aimant permanent (37) et un rotor (29). Le rotor (29) et une roue mobile (16) de la pompe régénérative forment un seul élément constitutif, à la périphérie (35) duquel l'aimant permanent (37) est introduit par liaison de forme. Il est ainsi possible de produire une pompe régénérative particulièrement plate et pratiquement sans fuite.
EP99913069A 1998-02-12 1999-02-09 Ensemble de refoulement pour carburant Withdrawn EP0974009A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19805777A DE19805777A1 (de) 1998-02-12 1998-02-12 Förderaggregat für Kraftstoff
DE19805777 1998-02-12
PCT/DE1999/000343 WO1999041504A1 (fr) 1998-02-12 1999-02-09 Ensemble de refoulement pour carburant

Publications (1)

Publication Number Publication Date
EP0974009A1 true EP0974009A1 (fr) 2000-01-26

Family

ID=7857526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99913069A Withdrawn EP0974009A1 (fr) 1998-02-12 1999-02-09 Ensemble de refoulement pour carburant

Country Status (6)

Country Link
US (1) US6220826B1 (fr)
EP (1) EP0974009A1 (fr)
JP (1) JP2001522434A (fr)
BR (1) BR9904863A (fr)
DE (1) DE19805777A1 (fr)
WO (1) WO1999041504A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10026490A1 (de) * 2000-05-27 2001-11-29 Bosch Gmbh Robert Förderaggregat für Kraftstoff
DE10111837B4 (de) * 2001-03-13 2005-09-29 Robert Bosch Gmbh Kraftstoffzumesssystem für eine Brennkraftmaschine mit einem Hochdruckpumpen (HDP)-Modul
US6808371B2 (en) * 2001-09-25 2004-10-26 Matsushita Electric Industrial Co., Ltd. Ultra-thin pump and cooling system including the pump
DE10356078A1 (de) * 2003-12-01 2005-06-23 Siemens Ag Motor für eine Kraftstoffpumpe
DE502005010177D1 (de) * 2005-07-29 2010-10-14 Siemens Ag Permanentmagnetrotor für eine bürstenlose elektrische Maschine
DE102009045028A1 (de) * 2009-09-25 2011-03-31 Robert Bosch Gmbh Pumpe mit Elektromotor
DE102013223818A1 (de) * 2013-11-21 2015-05-21 Robert Bosch Gmbh Maschinenkomponente für eine elektrische Maschine
FR3102510B1 (fr) * 2019-10-25 2021-11-12 Safran Helicopter Engines Turbomachine munie d’une pompe électromagnétique à flux magnétique axial
EP4439933A1 (fr) * 2023-03-29 2024-10-02 Wirthwein SE Rotor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2697986A (en) * 1952-04-05 1954-12-28 Jr James M Meagher Axial flow glandless impeller pump
US3500755A (en) * 1968-05-17 1970-03-17 Crane Co Combined drag pump and electric motor
EP0013157B1 (fr) * 1978-12-26 1986-10-15 The Garrett Corporation Rotors à aimant permanent, notamment pour machines dynamo-électriques
DE3640657A1 (de) * 1986-11-28 1988-06-09 Heinz Turbanisch Pumpe fuer fluessige medien
US4973872A (en) * 1988-10-07 1990-11-27 Emerson Electric Co. Dynamoelectric machine rotor assembly with improved magnet retention stucture
US5112200A (en) * 1990-05-29 1992-05-12 Nu-Tech Industries, Inc. Hydrodynamically suspended rotor axial flow blood pump
DE4020521A1 (de) 1990-06-28 1992-01-02 Bosch Gmbh Robert Peripheralpumpe, insbesondere zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges
DE4205926A1 (de) * 1992-02-26 1993-09-16 Magnet Motor Gmbh Elektrische pumpe
DE4341564A1 (de) * 1993-12-07 1995-06-08 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
DE9404601U1 (de) 1994-03-18 1994-06-09 Robert Bosch Gmbh, 70469 Stuttgart Aggregat zum Fördern von Kraftstoff aus einem Vorratsbehälter zu einer Brennkraftmaschine
US5659217A (en) * 1995-02-10 1997-08-19 Petersen; Christian C. Permanent magnet d.c. motor having a radially-disposed working flux gap

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9941504A1 *

Also Published As

Publication number Publication date
BR9904863A (pt) 2000-09-26
US6220826B1 (en) 2001-04-24
WO1999041504A1 (fr) 1999-08-19
DE19805777A1 (de) 1999-08-26
JP2001522434A (ja) 2001-11-13

Similar Documents

Publication Publication Date Title
EP2696469B1 (fr) Rotor pour une machine synchrone à excitation permanente
DE19752884A1 (de) Förderaggregat für Kraftstoff
EP3619796A1 (fr) Fendeuse électrique de fluides conçue pour un compresseur et/ou une turbine, turbocompresseur et/ou turbine
EP2277243B1 (fr) Machine électrique comprenant au moins deux paires de balais de charbon
EP3759800A1 (fr) Moteur électrique
EP1145407A1 (fr) Generateur a poles a griffes
EP1495527A1 (fr) Machine electrique, notamment moteur excite par aimant permanent
EP0974009A1 (fr) Ensemble de refoulement pour carburant
DE19725941A1 (de) Förderaggregat für Kraftstoff
DE4341564A1 (de) Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
EP1046217A1 (fr) Moteur electrique
DE102013217588A1 (de) Elektrisch angetriebener Motor und elektrisch angetriebene Pumpe
DE10261574A1 (de) Klauenpolmotor
DE3521037A1 (de) Kommutatormaschine, insbesondere kleinmotor fuer kraftfahrzeuge
DE102013211574A1 (de) Pumpe mit wenigstens einem Strömungskanal und Haushaltsgerät mit einer solchen Pumpe
DE3521284A1 (de) Pumpenvorrichtung
EP1000455A1 (fr) Groupe de refoulement pour carburant
DE102011075195A1 (de) Elektromotor
EP1209799B1 (fr) Rotor d'une machine électrique et son procédé de fabrication
DE102020119549A1 (de) Rotor für eine elektrische Maschine mit verstellbaren Permanentmagneten und Kraftfahrzeug
DE3426996A1 (de) Elektromotor, insbesondere zum antreiben einer kraftstoffoerderpumpe
DE3225435C2 (fr)
DE19937012A1 (de) Förderaggregat für Kraftstoff
DE10026490A1 (de) Förderaggregat für Kraftstoff
DE3821557C1 (en) Electronically commutated miniature DC motor

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR IT

17P Request for examination filed

Effective date: 20000221

17Q First examination report despatched

Effective date: 20021205

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20030416