EP2047106A1 - Pompe à fluide et procédé pour la fabrication d'une pompe à fluide - Google Patents

Pompe à fluide et procédé pour la fabrication d'une pompe à fluide

Info

Publication number
EP2047106A1
EP2047106A1 EP07729602A EP07729602A EP2047106A1 EP 2047106 A1 EP2047106 A1 EP 2047106A1 EP 07729602 A EP07729602 A EP 07729602A EP 07729602 A EP07729602 A EP 07729602A EP 2047106 A1 EP2047106 A1 EP 2047106A1
Authority
EP
European Patent Office
Prior art keywords
shaft
pump
bearing cap
fluid pump
bearing
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
EP07729602A
Other languages
German (de)
English (en)
Other versions
EP2047106B1 (fr
Inventor
Claudius Muschelknautz
Christoph Heier
Bernd Hein
Jerome Thiery
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 EP2047106A1 publication Critical patent/EP2047106A1/fr
Application granted granted Critical
Publication of EP2047106B1 publication Critical patent/EP2047106B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • 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
    • F04D13/0633—Details of the bearings
    • 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
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/046—Bearings
    • F04D29/047—Bearings hydrostatic; hydrodynamic
    • 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
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
    • F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49236—Fluid pump or compressor making
    • Y10T29/49245—Vane type or other rotary, e.g., fan

Definitions

  • the invention relates to a fluid pump, in particular a liquid pump for a cooling or heating circuit of a motor vehicle, and to a method for producing such a fluid pump.
  • a liquid pump in particular for the cooling / heating circuit of a motor vehicle is known, which has a stator in Klau- enpolkonstrument and separated from the stator by a tube, immersed in the cooling water and forming an impeller rotor ,
  • the rotor of the liquid pump of DE 199 34 382 A1 is arranged radially inside the stator.
  • a bearing shaft of the rotor is rotatably connected at its axial ends with a stationary shaft and encloses this substantially over its entire length. The length of the bearing shaft is at least so large that the center of gravity of the rotor is located between the two axial ends of the bearing shaft of the rotor.
  • the shaft is rotatably anchored at a first end in a recess of the bottom of the pump housing. Its second end is received in the hub of a rib star, which is formed integrally with the front housing part of the pump and whose ribs extend radially in the intake manifold of the pump.
  • the fluid pump according to the invention which can be used in particular as a liquid pump for a cooling and / or heating circuit of a motor vehicle, has a pump housing with a pump housing arranged in the rotationally fixed shaft for a rotor having an impeller.
  • the shaft is only stored or fixed on one side and carries at its end opposite this bearing a shaft at least partially embracing end cap, which is also referred to as a bearing cap.
  • Dirt repellency in particular the rejection of entrained dirt from the bearing, can be realized in one component, which leads to an assembly and cost savings of the pump according to the invention.
  • Liquid pump for the cooling and / or heating circuit of a motor vehicle thus allows a simplified assembly method and method for producing such a pump.
  • the shaft can be fixed with its first end in a plastic housing of the pump, so that the inner rotor can be pushed onto the shaft and subsequently via a mounted on the shaft and carried by the shaft itself Bearing cap can be axially secured.
  • the bearing cap is mounted on the shaft such that the inner rotor of the fluid pump is secured axially on the shaft.
  • the bearing cap thus serves as an axial securing element which limits the axial displaceability of the rotor on the non-rotatable shaft.
  • the bearing cap is therefore designed as a hollow body, in particular as a metallic hollow body. This hollow body may, for example, at its the bearing point of the shaft side facing tabs, in particular integrally formed with the hollow body tabs having an operative connection of the
  • the tabs may be formed in particular as metallic leaf springs, so that the bearing cap can be pressed or attached to the shaft while applying a corresponding pressing force under elastic deformation of the bearing cap straps.
  • the mounting of the bearing cap can be done in a groove, in grooves or directly on the shaft itself.
  • the bearing cap applied to the second shaft end has a substantially conical shape.
  • the bearing cap tapers in the direction of the suction opening of the pump.
  • the opening angle of the cone of the bearing cap can be correlated with the opening angle of the suction port of the pump in an advantageous manner. This allows effective deflection, or a non-turbulent influx of the inflowing through the inf-mammal fluid to the impeller blades of the impeller.
  • the shape of the bearing cap corresponds to a rotary cone or a rotary truncated cone, wherein the end of the bearing cap facing the suction opening is flattened or rounded in order to ensure as far as possible an essentially laminar flow around the bearing cap.
  • FIG. 1 shows a first embodiment of a fluid pump according to the invention in a simplified longitudinal sectional view
  • FIG. 2 shows a detailed representation of an alternative embodiment of a fluid pump according to the invention in the region of the rotor of the pump,
  • FIG. 3 is a perspective view of the impeller of the fluid pump with attached bearing cap
  • FIG. 4 shows an exemplary embodiment of a bearing cap
  • Figure 5 is a patch on the free shaft end and fixed to this bearing cap.
  • FIG. 1 shows a schematic overview of a fluid pump according to the invention in a longitudinal section.
  • the fluid pump according to the invention shown in Figure 1 has the embodiment of a cooling water pump, in particular a cooling water pump for a
  • the pump 10 has a three-part housing, which consists of a housing front part 12 with an intake 14 formed thereon, a partition 16 and a housing rear part 18.
  • the housing parts 12, 16 and 18 are held together in the embodiment of Figure 1 by screws 20, but also a bonding or welding of the housing parts is possible.
  • the partition 16, which is essentially cup-shaped, is clamped between the front housing part 12 and the rear housing part 18.
  • a sealing ring 22 is clamped between the front housing part 12 and partition 16.
  • the partition wall 16 is made of a non-magnetic material and has a thin-walled portion in the form of a tube 24, which together with a bottom 26 forms a cup in which a rotor 28 is rotatably arranged.
  • the rotor 28 is made of a plastic-bonded magnetic material, for example, embedded in a resin matrix or plastic matrix, powdered magnetic material, in particular in one piece, for example by injection molding.
  • the rotor has an outer cylinder 30, which follows the course of the tube 24 of the cup-shaped partition 16 at a short distance.
  • Cylinder 30 is closed at its end facing the intake 14 by a flange 32.
  • the flange 32 carries a plurality of vanes or vanes thus forming a vane or feed wheel 35 of the pump, which are formed in the embodiment of Figure 1 in one piece with the rotor.
  • bearing shaft 34 extends through the interior of the cylinder 30 of the rotor 28.
  • the rotor 28 is rotatably mounted on a rotationally fixed shaft 36 and encloses this substantially over its entire length.
  • the shaft 36 is rotatably anchored at a first end in a recess 38 of the bottom 26.
  • Figure 1 shows a knurling 40, with which the example metallic shaft is pressed into the recess 38 of the plastic bottom 26.
  • Other, known to those skilled options for fixing the first shaft end in or on the pump housing are also possible.
  • the shaft 36 carries a bearing cap 44, which surrounds the shaft at least partially and is secured thereto.
  • the bearing shaft 34 of the rotor 28 is thus secured between the recess 38, which is a first bearing point of the shaft, and the bearing cap 44.
  • the bearing cap 44 has a substantially conical shape, which tapers in particular in the direction of the suction opening of the suction nozzle 14.
  • the opening angle of the cone of the bearing cap 44 corresponds in an advantageous manner with the opening angle of the suction port of the pump.
  • the thus configured bearing cap 44 thus ensures both the storage of the rotor of the pump and the rejection of dirt, such as the entrained in the coolant of an internal combustion engine dirt in a single component.
  • the conical shape of the bearing cap whose shape is for example between the shape of a rotary cone and a rotary truncated cone, also increases the efficiency of the pump, since turbulence can be avoided by the shape of the bearing cap and in particular by the absence of attachment of such a bearing cap by means of housing webs. Since the bearing cap is only carried by the shaft itself, it comes to any
  • FIG. 2 shows a detailed illustration of the rotor secured on the shaft of an alternative embodiment of a fluid pump.
  • the shaft 36 is fixed on one side in a serving as a bearing recess 38 of the pot bottom 28 of the partition 16.
  • the shaft is pressed without special knurling only in the recess or glued.
  • Mounted on the shaft is a rotor 28 made of a plastic-bonded magnetic material. Integrally formed with the rotor is an impeller 35 having a plurality of conveying blades, of which in the illustration of Figure 2, however, only a single conveying blade is shown.
  • the patch on the shaft 36 rotor 28, which also serves as a feed wheel 35 for the fluid to be conveyed, via a pressed onto the shaft 36 bearing cap
  • bearing cap 44 secured axially.
  • the bearing cap 44 surrounds the end of the bearing 38 opposite end 42 of the shaft 36th
  • FIG. 3 shows, in a perspective view, the rotor 28 inserted into the cup-shaped dividing wall 16, on which the conveying wheel 35 is integrally formed with the conveying blades.
  • the bearing cap 44 according to the invention, the rotor 28 is secured axially on the rotationally fixed shaft 36.
  • FIG. 4 shows an exemplary embodiment of a bearing cap 44 in a representation which is not to scale.
  • This bearing cap can, for example, be drawn, bent or otherwise formed from a metallic material, for example a sheet metal.
  • the bearing cap 44 is formed as a hollow body, wherein the cap in the embodiment of Figure 4 at its the Anströmungs- direction 48 opposite end has a plurality of bent tabs 50, the free ends 52 are bent in the direction of the interior 54.
  • the annularly arranged tabs 50 thus define an opening 56 of the bearing cap 44, which is formed on the side facing away from the flow direction 48 of the cap.
  • the free shaft end 42 can be introduced.
  • the diameter of this opening 56 is smaller by a small amount than the diameter of the shaft on which the bearing cap is to be placed and fastened.
  • FIG. 5 shows a detail of a bearing cap 44 applied to a shaft 36.
  • the tabs 50 When pressing the shaft 36 into the interior 54 of the bearing cap 44, the tabs 50 can be elastically pushed back in the manner of leaf springs so that they press with a corresponding counterforce on the shaft 36 and thus secure the bearing cap 44 securely on the shaft 36.
  • the shaft 36 has a circumferentially extending groove 58, in which the free ends 52 of the tabs 50 can engage, thus ensuring a particularly reliable backup of the bearing cap 44 on the second shaft end 42.
  • an additional locking washer may also be provided between the bearing cap 44 and the impeller of the rotor.
  • the fluid pump according to the invention can be mounted in a simple manner, since the shaft only with its first end in a plastic housing of the pump, for example in the bottom of the pot 26 of the partition 16, must be fixed.
  • the rotor 28 may then be slid onto the shaft and secured axially over the bearing cap 44 to be mounted on the shaft and carried by the shaft.
  • the fluid pump according to the invention is not limited to the embodiments described in the figures.
  • the fluid pump is not limited to a metallic bearing cap.
  • Bearing caps made of plastic or a natural, such as elastic, material are also conceivable.
  • the fluid pump according to the invention is not based on the described attachment methods of the shaft in the pump housing or the bearing cap limited to the wave. Further fastening methods known to the person skilled in the art are also possible in the fluid pump according to the invention.
  • a metallic bearing cap can for example be made of a stamped and / or drawn sheet metal.
  • the bearing cap according to the invention, carried by the shaft thus forms an abutment of the impeller of the fluid pump according to the invention.
  • fluid pump according to the invention is not limited to the
  • the electric motor driving the fluid pump of the embodiment of FIG. 1 is designed as a so-called canned motor, in which the rotor rotating in the conveying fluid passes through a thin partition wall radially from the rotor
  • Rotor running, fixed stator is delimited.
  • the split tube 24 is integrally formed in the embodiment of Figure 1 with the partition wall 16 and the bottom 26.
  • On the partition wall 16 and the solenoid 60 of the stator of the electric motor is also attached.
  • the cylindrical coil 60 is contacted via electrical connection means 62 with a printed circuit board 64, on which the power electronics 66 are arranged to drive the pump.
  • a corresponding plug element 68 such a pump can be connected, for example, to the electrical system of a motor vehicle, in order to serve as a delivery pump for the cooling medium in a cooling circuit or heating circuit of the motor vehicle.
  • the stator as described in DE 199 34 382 A1, be designed as Klauenpolstator. This design makes it possible to realize a high number of pole pairs for driving the rotor 28 with a simple winding in the form of a cylindrical coil 60.
  • Stators are mounted axially one behind the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

L'invention concerne une pompe à fluide (10), notamment une pompe à liquide pour un circuit de refroidissement et/ou de chauffage d'un véhicule automobile, comprenant un boîtier de pompe (12, 14, 16, 18) et un arbre (36) solidaire en rotation, disposé dans le boîtier de la pompe (12, 14, 16, 18), pour un rotor interne (28) présentant une roue à aubes (35). Conformément à l'invention, l'arbre (28) est monté sur palier d'un côté et porte à son extrémité (42) opposée au point de support (38) un chapeau de palier (44) venant en prise au moins partiellement autour de l'arbre (28). En outre, l'invention concerne un procédé de fabrication d'une telle pompe à fluide (10), avec lequel l'arbre (36) est fixé avec sa première extrémité dans un boîtier, notamment dans un boîtier en plastique de la pompe, le rotor interne (28) de la pompe est poussé sur l'arbre (36) et est fixé axialement par le biais d'un chapeau de palier (44) placé sur l'arbre (36) et porté par l'arbre.
EP07729602A 2006-07-25 2007-05-29 Pompe à fluide Not-in-force EP2047106B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006034385A DE102006034385A1 (de) 2006-07-25 2006-07-25 Fluidpumpe sowie Verfahren zur Herstellung einer Fluidpumpe
PCT/EP2007/055180 WO2008012130A1 (fr) 2006-07-25 2007-05-29 Pompe à fluide et procédé pour la fabrication d'une pompe à fluide

Publications (2)

Publication Number Publication Date
EP2047106A1 true EP2047106A1 (fr) 2009-04-15
EP2047106B1 EP2047106B1 (fr) 2012-01-25

Family

ID=38430596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07729602A Not-in-force EP2047106B1 (fr) 2006-07-25 2007-05-29 Pompe à fluide

Country Status (8)

Country Link
US (1) US8277181B2 (fr)
EP (1) EP2047106B1 (fr)
CN (1) CN101495758B (fr)
AT (1) ATE543005T1 (fr)
DE (1) DE102006034385A1 (fr)
ES (1) ES2378092T3 (fr)
RU (1) RU2467206C2 (fr)
WO (1) WO2008012130A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8303268B2 (en) 2008-12-19 2012-11-06 Bühler Motor GmbH Rotary pump with a fixed shaft

Families Citing this family (19)

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CN101825091B (zh) * 2009-03-06 2012-09-19 魏延恕 新型电磁泵
DE102009020327A1 (de) * 2009-05-07 2010-11-11 Ltn Servotechnik Gmbh Resolver
DE102009003146A1 (de) * 2009-05-15 2010-11-18 Robert Bosch Gmbh Elektrisch angetriebene Flüssigkeitspumpe mit einem mehrteiligen Rotor und Herstellungsverfahren für einen solchen Rotor
EP2273123B9 (fr) 2009-07-08 2018-03-21 Pierburg Pump Technology GmbH Sécurisation d'une roue de pompe centrifuge
DE102010001212A1 (de) 2010-01-26 2011-07-28 Robert Bosch GmbH, 70469 Kreiselpumpe
US9360015B2 (en) * 2012-07-16 2016-06-07 Magna Powertrain Of America, Inc. Submerged rotor electric water pump with structural wetsleeve
RU2537790C2 (ru) * 2012-11-07 2015-01-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственынй технический университет" Гидравлический электронасос
DE102013014139A1 (de) * 2012-12-21 2014-06-26 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Elektromotorische Wasserpumpe
KR101332853B1 (ko) * 2013-05-09 2013-11-27 엔엔엔코리아(주) 냉각부재를 내장한 자동차용 전동식 워터펌프
CN106325441B (zh) * 2015-06-23 2023-12-01 奇鋐科技股份有限公司 对接式水冷装置及系统
DE102015211741A1 (de) * 2015-06-24 2016-12-29 Robert Bosch Gmbh Pumpe mit Anlaufscheibe
US10184475B2 (en) * 2015-07-20 2019-01-22 Delphi Technologies Ip Limited Fluid pump with flow impedance member
US9823028B2 (en) * 2015-07-20 2017-11-21 Asia Vital Components Co., Ltd. Water cooling device with detachably assembled modularized units
CN106438454A (zh) * 2016-10-13 2017-02-22 江西云嘉泵业制造有限公司 节能型汽车发动机冷却水泵
JP2019183773A (ja) * 2018-04-13 2019-10-24 アイシン精機株式会社 電動ポンプ
CN109185217A (zh) * 2018-11-28 2019-01-11 无锡艾比德泵业有限公司 一种吸入口为鱼嘴式的多级离心泵的进水段结构
DE102020126720A1 (de) 2020-10-12 2022-04-14 Volkswagen Aktiengesellschaft Vorrichtung mit einem Gehäuse, einer formschlüssig in das Gehäuses eingebetteten Achse und einem drehbar auf der Achse gelagerten Rotor
DE102022210734A1 (de) 2022-10-12 2024-04-18 Robert Bosch Gesellschaft mit beschränkter Haftung Flüssigkeitspumpe, insbesondere Kühlmittelpumpe
DE102022212206A1 (de) 2022-11-16 2024-05-16 Volkswagen Aktiengesellschaft Pumpe mit formschlüssiger Lagesicherung eines Förderrads

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8303268B2 (en) 2008-12-19 2012-11-06 Bühler Motor GmbH Rotary pump with a fixed shaft

Also Published As

Publication number Publication date
US8277181B2 (en) 2012-10-02
WO2008012130A1 (fr) 2008-01-31
ES2378092T3 (es) 2012-04-04
RU2467206C2 (ru) 2012-11-20
RU2009106168A (ru) 2010-08-27
ATE543005T1 (de) 2012-02-15
EP2047106B1 (fr) 2012-01-25
DE102006034385A1 (de) 2008-01-31
WO2008012130A9 (fr) 2009-03-19
US20090252607A1 (en) 2009-10-08
CN101495758A (zh) 2009-07-29
CN101495758B (zh) 2012-06-13

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