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WO2002018797A1 - Unite pour refouler du carburant - Google Patents

Unite pour refouler du carburant Download PDF

Info

Publication number
WO2002018797A1
WO2002018797A1 PCT/DE2001/003153 DE0103153W WO0218797A1 WO 2002018797 A1 WO2002018797 A1 WO 2002018797A1 DE 0103153 W DE0103153 W DE 0103153W WO 0218797 A1 WO0218797 A1 WO 0218797A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
pump part
stage pump
unit
drive motor
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.)
Ceased
Application number
PCT/DE2001/003153
Other languages
German (de)
English (en)
Inventor
Mathias Rollwage
Stefan Woerz
Jochen Rose
Erich Eiler
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 WO2002018797A1 publication Critical patent/WO2002018797A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • 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
    • 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
    • F04D5/003—Regenerative pumps of multistage type
    • F04D5/006—Regenerative pumps of multistage type the stages being axially offset

Definitions

  • the invention relates to a unit for delivering fuel according to the preamble of claim 1.
  • Such an assembly is known from DE 197 25 941 AI.
  • This unit has a brushless electric drive motor, which in turn has a disk-shaped rotor, which is surrounded on its periphery by a stator.
  • the unit has a pump part which has a conveying member in the form of an impeller which is driven in rotation in a pump chamber by the rotor and which is provided with a plurality of blades on its circumference.
  • the impeller with the blades is made in one piece with the rotor.
  • the known unit has a very flat design when viewed in the direction of the axis of rotation of the conveying member.
  • the unit has only one pump stage, so that several units may be required to enable the fuel to be delivered in several stages.
  • the unit according to the invention with the features according to claim 1 has the advantage that it continues in the direction of the axis of rotation of the conveying members considered flat design with the pre-stage pump part and the main stage pump part has two pump stages.
  • the design according to claim 4 enables a particularly flat design of the unit, the height of which is essentially determined by the height of the stator of the drive motor.
  • FIG. 1 shows a schematic illustration of an assembly for conveying fuel
  • FIG. 2 shows the assembly in an implemented construction in a longitudinal section
  • FIG. 3 shows the assembly in a cross section along line III-III in FIG. 2.
  • the unit 10 is preferably arranged in a pot-shaped storage container 16 which is arranged in the storage tank 12.
  • the storage container 16 has a significantly smaller volume than the storage tank 12.
  • the unit 10 has a brushless electric direct current drive motor 18, a preliminary stage pump part 20 and a main stage pump part 22.
  • the pump parts 20, 22 each have a conveying member 26 or 28 driven by the drive motor 18 around a common axis of rotation 24.
  • the drive motor 18 is viewed in the direction of the axis of rotation 24 between the Pre-stage pump part 20 and the main stage pump part 22 are arranged.
  • the preliminary stage pump part 20 is arranged below the drive motor 18 and the main stage pump part 22 is arranged above the drive motor 18.
  • the structural design of the unit 10 is explained in more detail below with reference to FIGS. 2 and 3.
  • the unit 10 has a cup-shaped housing 30 which has a bottom 32 at its end facing the pre-stage pump part 20 and which is open at its other end.
  • the open end of the housing 30 is closed by means of a cover part 34 which is connected to the housing 30.
  • the drive motor 18 has a disk-shaped rotor 36 which is rotatably mounted in the housing 30 via a shaft 38 which determines the axis of rotation 24.
  • the shaft 38 is non-rotatably connected to the rotor 36 and is mounted on the one hand via a bearing shell 39 in a bore 40 in the bottom 32 of the housing 30 and on the other hand via a bearing shell 41 in a bore 42 in the cover part 34.
  • the outer shell of the rotor 36 is distributed over its circumference
  • Permanent magnet segments 43 arranged.
  • the rotor 36 is surrounded on its circumference by a stator 44, which has cores 45 with coil windings 46.
  • the cores 45 of the stator 44 have approximately the same extension in the direction of the axis of rotation 24 of the rotor 36 as the rotor 36.
  • the coil windings 46 protrude beyond the cores 45 in the direction of the axis of rotation 24 of the rotor 36.
  • the bottom 32 of the housing 30 has on its periphery an annular recess 33 into which the coil windings 46 facing the bottom 32 are immersed.
  • the rotor 36 is arranged in the region of the base 32 lying within the depression 33.
  • the preliminary stage pump part 20 is designed as a side channel pump, with its delivery member 26 is designed as an impeller and is integrally formed with the rotor 36.
  • the impeller 26 of the pre-stage pump part 20 can also be inserted into the rotor 36 as a separate part, as is indicated in FIG. 2 with dashed lines.
  • the rotor 36 thus forms the impeller 26 of the pre-stage pump part 20 and has on its end face facing the bottom 32 of the housing 30 a plurality of blades 48 distributed over its circumference.
  • a partially ring-shaped conveying channel 50 opposite the blades 48 of the rotor 36 is formed in the bottom 32 of the housing 30, in the end face facing the rotor 36.
  • a suction opening 51 opens into the conveying channel 50 at its end region facing the direction of rotation 37 of the rotor 36 and an outlet opening 52 at its end region facing the direction of rotation 37 of the rotor 36.
  • the suction opening 51 and the outlet opening 52 are formed in the bottom 32 of the housing 30.
  • the rotor 36 as the conveying member of the pre-stage pump part 20 is arranged in a pump chamber formed by the housing 30 and rotates therein.
  • the pre-stage pump part 20 can also be designed according to another pump principle instead of the side channel pump, for example as a peripheral pump, as a gear pump or as a roller cell pump.
  • the pre-stage pump part 20 can also be inserted as a preassembled unit in the housing 30 and have a conveying member which is formed separately from the rotor 36 and is driven in rotation by the latter.
  • a lead frame 54 is arranged between the housing 30 and the cover part 34 and is used to contact and connect the coil windings 46 of the stator 44. Connections leading to the outside can be arranged on the lead frame 54 in order to connect the drive motor 18 to a power source.
  • the lid part 34 has in its central region a pot-shaped recess 35 which runs close to the rotor 36. The edge region of the cover part 34 surrounding the recess 35 extends at a greater axial distance from the rotor 36 in order to enable the arrangement of the coil windings 46 of the stator 44 and the lead frame 54.
  • the main stage pump part 22 is inserted as a pre-assembled unit in the recess 35 of the cover part 34.
  • the main stage pump part 22 has a pump housing with a top-shaped housing part 56 and a cover 57, which delimit a pump chamber 58 between them, in which the conveying member 28 is arranged.
  • the housing part 56 and the cover 57 are connected to one another, for example, by means of a holding element 59 spanning them.
  • the main stage pump part 22 is designed, for example, as a side channel pump, the delivery member 28 of which is an impeller which has a plurality of blades 60 spaced apart from one another in the circumferential direction on one or both end faces.
  • a partially ring-shaped conveying channel 62, 63 opposite the blades 60 is formed in the end faces thereof facing the impeller 28.
  • a suction opening 64 opens into the conveying channel 63 at its end region facing the direction of rotation 37 of the impeller 28 and an outlet opening 65 at its end region pointing in the direction of rotation 37 of the impeller 28.
  • the suction opening 64 and the outlet opening 65 are formed in the cover 57 of the main stage pump part 22.
  • the shaft 38 of the rotor 36 protrudes into the pump chamber 58 and is connected to the impeller 28 in a rotationally locking manner there.
  • an outwardly projecting connection piece 68 is then formed on the outlet opening 65, to which a line leading to the internal combustion engine 14 is connected.
  • the main stage pump part 22 is arranged at least approximately completely in the recess 35 of the cover part 34 and thus, viewed in the direction of the axis of rotation 24, does not at least substantially protrude from it.
  • the overall length of the assembly 10 in the direction of the axis of rotation 24 is thus essentially determined by the stator 44 with the coil windings 46.
  • the main stage pump part 22 can also use the rotor 36 as a conveying member as a separate structural unit and / or the recess 35 of the cover part 34 can wholly or partly the housing for the
  • the main stage pump part 22 can also be designed as a peripheral pump, as a gear pump or as a roller cell pump.
  • the pre-stage pump part 20 sucks fuel through the intake opening 51 and delivers it to the outlet opening 52, where the fuel exits the pre-stage pump part 20.
  • the suction opening 51 preferably opens into the storage tank 12 and the outlet opening 52 preferably opens into the storage container 16, so that fuel is conveyed from the storage tank 12 into the storage container 16 by the pre-stage pump part 20.
  • the fuel delivered by the pre-stage pump part 20 emerges again through the bottom 32 of the housing 30 without flowing through the drive motor 18.
  • the fuel delivered by the preliminary stage pump part 20 flows through the drive motor 18 and exits, for example, through the cover part 34 into the storage container 16.
  • the suction opening 64 of the main stage pump part 22 preferably opens into the storage container 16, so that during operation of the assembly 10 fuel 22 is sucked out of the storage container 16 through the main stage pump part and through the outlet opening 65 and one to the Stub 68 connected line to the internal combustion engine 14 is promoted.

Landscapes

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

Abstract

L'invention concerne une unité comportant un moteur d'entraînement (18) électrique présentant un rotor (36) sous forme de disque, entouré en périphérie par un stator (44). L'unité comporte en outre une partie de pompe à étage préliminaire (20) et une partie de pompe à étage principal (22) qui présentent dans chaque cas un élément de refoulement (26,28) entraîné en rotation par le rotor (36). Vu dans le sens de son axe de rotation, le rotor (36) du moteur d'entraînement (18) est disposé entre la partie de pompe à étage préliminaire (20) et la partie de pompe à étage principal (22). L'élément de refoulement (26) de la partie de pompe à étage préliminaire (20) se présente d'un seul tenant avec le rotor (36) du moteur d'entraînement (18). La partie de pompe à étage principal (22) est placée comme unité modulaire prémontée dans un carter (34) logeant le moteur d'entraînement (18). L'unité présente une structure plate, lorsqu'elle est vue dans le sens de l'axe de rotation (24) du rotor (36).
PCT/DE2001/003153 2000-09-01 2001-08-17 Unite pour refouler du carburant Ceased WO2002018797A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10043088.0 2000-09-01
DE2000143088 DE10043088A1 (de) 2000-09-01 2000-09-01 Aggregat zum Fördern von Kraftstoff

Publications (1)

Publication Number Publication Date
WO2002018797A1 true WO2002018797A1 (fr) 2002-03-07

Family

ID=7654630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/003153 Ceased WO2002018797A1 (fr) 2000-09-01 2001-08-17 Unite pour refouler du carburant

Country Status (2)

Country Link
DE (1) DE10043088A1 (fr)
WO (1) WO2002018797A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD54885A (fr) *
DE19725941A1 (de) 1997-06-19 1998-12-24 Bosch Gmbh Robert Förderaggregat für Kraftstoff
DE19752884A1 (de) * 1997-11-28 1999-06-10 Bosch Gmbh Robert Förderaggregat für Kraftstoff
DE19811893A1 (de) * 1998-03-18 1999-09-23 Bosch Gmbh Robert Mehrstufige Seitenkanalpumpe für Kraftstoff für ein Kraftfahrzeug
DE19844802A1 (de) * 1998-09-30 2000-04-13 Pierburg Ag Elektrische Brennstoffpumpe für Brennkraftmaschinen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD54885A (fr) *
DE19725941A1 (de) 1997-06-19 1998-12-24 Bosch Gmbh Robert Förderaggregat für Kraftstoff
DE19752884A1 (de) * 1997-11-28 1999-06-10 Bosch Gmbh Robert Förderaggregat für Kraftstoff
DE19811893A1 (de) * 1998-03-18 1999-09-23 Bosch Gmbh Robert Mehrstufige Seitenkanalpumpe für Kraftstoff für ein Kraftfahrzeug
DE19844802A1 (de) * 1998-09-30 2000-04-13 Pierburg Ag Elektrische Brennstoffpumpe für Brennkraftmaschinen

Also Published As

Publication number Publication date
DE10043088A1 (de) 2002-04-11

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