EP1000455A1 - Groupe de refoulement pour carburant - Google Patents

Groupe de refoulement pour carburant

Info

Publication number
EP1000455A1
EP1000455A1 EP99932621A EP99932621A EP1000455A1 EP 1000455 A1 EP1000455 A1 EP 1000455A1 EP 99932621 A EP99932621 A EP 99932621A EP 99932621 A EP99932621 A EP 99932621A EP 1000455 A1 EP1000455 A1 EP 1000455A1
Authority
EP
European Patent Office
Prior art keywords
rotor
impeller
fuel delivery
delivery unit
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Withdrawn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
EP99932621A
Other languages
German (de)
English (en)
Inventor
Klaus Dobler
Michael HÜBEL
Willi Strohl
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 EP1000455A1 publication Critical patent/EP1000455A1/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Withdrawn legal-status Critical Current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
    • 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
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • 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
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans

Definitions

  • the invention relates to a fuel delivery unit of the type defined in the preamble of claim 1.
  • the delivery pump and the electric motor for driving it are arranged in a housing next to one another.
  • the pump or 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 lying in slots and rotates in a stator or stator covered with permanent magnet segments.
  • the power supply to the armature winding is carried out via a commutator or commutator located on the rotor shaft 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, i.e. the impeller of the feed pump and the rotor of the electric motor, a very simple and compact structure is achieved in a single part, which can be produced with little manufacturing effort.
  • the conveyor unit can be very flat, that is, with an extremely low axial Dimension to be executed.
  • 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 piamp chamber is delimited by two radially extending, axially spaced side walls and a peripheral wall connecting the two side walls along their circular periphery.
  • Impeller is opposite the side walls with a gap distance
  • the inner surface of the stator formed by a grooved laminated core forms the peripheral wall of the pump chamber.
  • the impeller has a variety of in
  • Vane chambers delimiting radial impeller blades by a
  • Outer ring are interconnected.
  • the permanent magnets are on the
  • plastic-bonded rare earth magnets can be used, which are preferably embedded in the plastic matrix of the impeller.
  • a groove-like side channel open to the pump chamber is formed 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 is connected to a suction opening and the end of the side channel is connected to a pressure outlet, the axes of the inlet and outlet channels from the suction opening and to the pressure outlet being either axially or preferably radially aligned.
  • Fig. 1 shows a longitudinal or meridial section of the conveyor unit, the section being formed in the upper half of the illustration
  • FIG. 2 shows sections of the same representation as in FIG. 1 modified conveyor unit
  • Fig. 3 shows another preferred example in which the electric motor
  • Fig. 4 shows a rotor cage of the asynchronous motor with oblique grooves
  • the delivery unit shown schematically in FIG. 1 serves to deliver fuel from a reservoir to the 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 40 20 521 AI.
  • a pump chamber 14 is formed in the housing 13 and is delimited in the axial direction by two radially extending, axially spaced-apart side walls 141, 142 and in the circumferential direction by a peripheral wall 143 connecting the two side walls 141, 142 along their ice-shaped 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 in the two Side walls 141, 142 are formed.
  • 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 plurality of circumferentially spaced radial impeller blades 20, only two of which 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 end of the side channel is offset by a circumferential angle of approximately 330 °.
  • Each side channel 23, 24 is connected via a radially oriented 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 is omitted on the right in the sectional view, and the side channel 24 shows a cross section in this area, as is indicated by the broken lines in the drawing.
  • the inflow channels 25, 26 can be arranged axially, but the radial orientation has the advantage of lower flow losses and can be because of easily realize relatively large outer diameter of the conveyor unit.
  • the electric motor 12 which is designed with an internal pole rotor, has, in a known manner, a stator 28 and a rotor 29, 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 yoke, the outer ring 21 is preferably made of servomagnetic material.
  • the stator 28 is a grooved laminated core
  • An armature winding 32 is usually arranged in the grooves of the laminated core 31, of which only the two end windings 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 ferrites or are plastic-bonded rare earth magnets.
  • the side walls 141 and 142 of the pump chamber 14 are formed here on the one hand by a cover 131 which closes the housing 13 at the end and by a radial flange 132 arranged in the housing 13.
  • a stub shaft 33 protruding at right angles into the pump chamber 14 is formed in one piece, on which the impeller 16 rotates freely is stored. After inserting the impeller 16, the cover 131 is placed tightly on the housing 13 and firmly connected to it.
  • FIG. 3 shows a further preferred exemplary embodiment in which the electric motor 12 is an asynchronous motor 34, in particular a three-phase asynchronous motor.
  • the stator 28 for example, as can already be seen in FIG. 1, forms the stator 28 with a laminated core 31 and an armature winding 32
  • the rotor 29 of the asynchronous motor 34 is the impeller 16.
  • the rotor 29 is a short-circuit rotor.
  • This squirrel-cage rotor has a rotor cage 35.
  • the rotor cage 35 of the squirrel-cage rotor is preferably made of copper, bronze or aluminum. These materials have favorable electromagnetic properties as well as good manufacturing and strength properties.
  • the rotor cage is preferably manufactured in one piece.
  • the impeller 16 and the rotor cage 35 in turn form a unit.
  • the impeller 16 and the rotor cage 35 can also be manufactured separately from one another and then combined into one unit.
  • This unit in turn preferably has a coating 36.
  • the coating enables a smooth completion of all surfaces of the unit formed by the impeller 16 and the rotor cage 35. This minimizes gap losses in the pump chamber 14 of the feed pump 11.
  • the coating 36 is achieved, for example, by dipping in an appropriate bath. Another method is the encapsulation of the unit consisting of the impeller 16 and the rotor cage 35.
  • FIG. 3 enables the pump wheel 16 to be manufactured in a simplified and very cost-effective manner.
  • the use of a rotor cage 35 avoids wear and high manufacturing costs.
  • the rotor cage 35 is arranged on the outer circumference 37 of the impeller 16.
  • the rotor cage 35 is offset further inward from the impeller axis 161, but without thereby affecting the side channels 23, 24 or vane chambers 22.
  • This slightly further inward arrangement of the rotor cage 35 is advantageous, for example, if the unit comprising the rotor cage 35 and the impeller 16 is composed of several parts.
  • the short-circuit rotor expediently has a star-delta switchover 38.
  • the electric motor 12 runs in a delta connection.
  • the starting current which is several times the nominal current, to be reduced by using partial voltages. This also reduces the torque required to start the electric motor 12 as a function of the square of the voltage as well as the starting current to approximately one third.
  • Figure 4 shows the rotor cage 35 with inclined grooves 37.
  • the inclination has the advantage that electromagnetic harmonics are suppressed.
  • Another advantage of using a short-circuit rotor for the electric motor is that it has no unique number of pole pairs.
  • the rotor cage 35 can therefore be used in different electric motors with different numbers of pole pairs of the stator, which supports a modular system for different feed pumps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

L'invention concerne un groupe de refoulement pour carburant, comportant une pompe régénérative qui comprend une chambre de pompe (14) dans un carter (13) et une roue mobile (16) dans la chambre de pompe (14). Le groupe comprend également un moteur électrique (12) comportant un stator (28) et un rotor (29), qui entraîne la roue mobile (16). La roue mobile (16) du groupe de refoulement pour carburant est simultanément le rotor (29) d'un moteur asynchrone. Le moteur électrique (12) peut être ainsi obtenu avec un nombre réduit d'éléments très fiables et résistants.
EP99932621A 1998-05-29 1999-05-05 Groupe de refoulement pour carburant Withdrawn EP1000455A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19824135 1998-05-29
DE19824135A DE19824135A1 (de) 1998-05-29 1998-05-29 Förderaggregat für Kraftstoff
PCT/DE1999/001342 WO1999063644A1 (fr) 1998-05-29 1999-05-05 Groupe de refoulement pour carburant

Publications (1)

Publication Number Publication Date
EP1000455A1 true EP1000455A1 (fr) 2000-05-17

Family

ID=7869360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99932621A Withdrawn EP1000455A1 (fr) 1998-05-29 1999-05-05 Groupe de refoulement pour carburant

Country Status (9)

Country Link
US (1) US6361291B1 (fr)
EP (1) EP1000455A1 (fr)
JP (1) JP2002517971A (fr)
KR (1) KR20010022360A (fr)
CN (1) CN1272243A (fr)
AU (1) AU747341B2 (fr)
BR (1) BR9906474A (fr)
DE (1) DE19824135A1 (fr)
WO (1) WO1999063644A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19902072C1 (de) * 1999-01-20 2000-07-20 Bosch Gmbh Robert Fördereinrichtung für Kraftstoff
DE10026490A1 (de) * 2000-05-27 2001-11-29 Bosch Gmbh Robert Förderaggregat für Kraftstoff
JP4310426B2 (ja) * 2002-07-25 2009-08-12 米原技研有限会社 加圧遠心ポンプの気体の混入構造
JP5896312B2 (ja) * 2013-09-17 2016-03-30 株式会社デンソー 燃料ポンプ
GR1009747B (el) * 2018-09-11 2020-05-29 Ευαγγελος Αθανασιου Κοτρικλας Αντλια ή στροβιλος τυπου ''υγρου πλευρικου δακτυλιου'' με αστρεπτο αξονα και περιστρεφομενο περιβλημα
FR3089575B1 (fr) * 2018-12-10 2021-11-19 Safran Electronics & Defense Circulateur à liquide
FR3123694A1 (fr) * 2021-06-03 2022-12-09 Safran Helicopter Engines Pompe electromagnétique pour turbomachine

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1771936A (en) * 1927-10-11 1930-07-29 Gen Electric Induction motor
US1986368A (en) * 1929-01-23 1935-01-01 Schwarz Benno Induction motor winding
US2242006A (en) * 1939-10-25 1941-05-13 Gen Electric Dynamoelectric machine
US2976808A (en) * 1958-06-06 1961-03-28 Hawkridge Metals Corp Rotary thrust pump
DE1137121B (de) * 1961-04-12 1962-09-27 Licentia Gmbh Als Foerderorgan wirkender Spaltrohrlaeufer fuer elektrischen Pumpenmotor
US3500755A (en) * 1968-05-17 1970-03-17 Crane Co Combined drag pump and electric motor
NL6908353A (fr) * 1968-07-01 1970-01-05
DE2163256A1 (de) * 1971-12-20 1973-07-26 Maschf Augsburg Nuernberg Ag Stroemungsmaschine, insbesondere turbopumpe, oder durchstroemmengemesseinrichtung fuer ein aggressives, radioaktives oder reinzuhaltendes stroemungsmittel
US4425539A (en) * 1980-03-13 1984-01-10 Borg-Warner Corporation Control system for AC induction motor
EP0228007B1 (fr) * 1985-12-28 1992-04-15 Paul Forkardt GmbH & Co. KG Machine-outil et son mode d'action
DE4036905A1 (de) * 1989-11-25 1991-05-29 Bosch Gmbh Robert Antriebssystem fuer eine kraftstoff-foerderpumpe in verbindung mit einer brennkraftmaschine eines kraftfahrzeuges
DE4020521A1 (de) * 1990-06-28 1992-01-02 Bosch Gmbh Robert Peripheralpumpe, insbesondere zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine eines kraftfahrzeuges
DE4341564A1 (de) * 1993-12-07 1995-06-08 Bosch Gmbh Robert Aggregat zum Fördern von Kraftstoff aus einem Vorratstank zur Brennkraftmaschine eines Kraftfahrzeuges
US5474429A (en) * 1994-01-11 1995-12-12 Heidelberg; Goetz Fluid-displacement apparatus especially a blower
DE9404601U1 (de) 1994-03-18 1994-06-09 Robert Bosch Gmbh, 70469 Stuttgart Aggregat zum Fördern von Kraftstoff aus einem Vorratsbehälter zu einer Brennkraftmaschine
DE4427737C2 (de) * 1994-08-05 1997-03-20 Koester Friedrich Gmbh & Co Kg Pumpe mit Antriebsmotor
DE19725941A1 (de) * 1997-06-19 1998-12-24 Bosch Gmbh Robert Förderaggregat für Kraftstoff
DE19811893A1 (de) * 1998-03-18 1999-09-23 Bosch Gmbh Robert Mehrstufige Seitenkanalpumpe für Kraftstoff für ein Kraftfahrzeug

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9963644A1 *

Also Published As

Publication number Publication date
DE19824135A1 (de) 1999-12-09
AU4895799A (en) 1999-12-20
US6361291B1 (en) 2002-03-26
KR20010022360A (ko) 2001-03-15
AU747341B2 (en) 2002-05-16
JP2002517971A (ja) 2002-06-18
WO1999063644A1 (fr) 1999-12-09
BR9906474A (pt) 2000-09-26
CN1272243A (zh) 2000-11-01

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