EP1286055B1 - Pompe à rotor mouillé - Google Patents

Pompe à rotor mouillé Download PDF

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Publication number
EP1286055B1
EP1286055B1 EP02017197A EP02017197A EP1286055B1 EP 1286055 B1 EP1286055 B1 EP 1286055B1 EP 02017197 A EP02017197 A EP 02017197A EP 02017197 A EP02017197 A EP 02017197A EP 1286055 B1 EP1286055 B1 EP 1286055B1
Authority
EP
European Patent Office
Prior art keywords
wet
shaft
rotor pump
type rotor
impeller
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.)
Expired - Fee Related
Application number
EP02017197A
Other languages
German (de)
English (en)
Other versions
EP1286055A1 (fr
Inventor
Andreas Knoll
Michael Weinert
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.)
Pierburg GmbH
Original Assignee
Pierburg 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 Pierburg GmbH filed Critical Pierburg GmbH
Publication of EP1286055A1 publication Critical patent/EP1286055A1/fr
Application granted granted Critical
Publication of EP1286055B1 publication Critical patent/EP1286055B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • F04D29/046—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
    • 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

Definitions

  • the invention relates to a wet runner pump, i. a pump-motor unit, which consists for example of a centrifugal pump and a DC electric motor.
  • a pump-motor unit which consists for example of a centrifugal pump and a DC electric motor.
  • Such Naded mecanicrpumpen are particularly suitable for coolant delivery in motor vehicle engines.
  • a wet rotor pump with a pump wheel which sucks a fluid through an intake and promotes in the direction of a discharge channel.
  • the impeller is mounted on a shaft.
  • a motor rotor of a motor is attached.
  • the fluid is used, which flows around the motor rotor.
  • the motor rotor is surrounded by a containment shell.
  • the stator core of the motor with the windings is arranged outside the containment shell, which is preferably made of plastic.
  • wet-runner pumps which are used to convey electrically non-conductive liquids, such as gasoline, have no containment shell, since a sealing against the stator core and the windings is not required.
  • the common shaft carrying the motor rotor and the impeller is by two radial bearings in the region of the impeller or at the opposite end the shaft mounted in the containment shell or a housing. Due to occurring in the fluid pressure differences occur axial forces. In addition, axial forces are transmitted to the shaft by the motor due to the magnetic forces.
  • a thrust bearing on the rotor which is supported on a bearing seat inserted in the containment shell. Both plain and thrust bearings can only be used with slide pumps, because the service life of ball and roller bearings within fluids is too low.
  • the provision of an axial bearing between the containment shell and rotor increases the assembly costs of the wet-running pump.
  • the object of the invention is to simplify the axial bearing of the shaft of a NIONALumblerpumpe and reduce assembly costs.
  • the wet-running pump has a support element provided inside the intake duct.
  • the support element which is upstream of the impeller in the flow direction, serves to absorb axial forces.
  • the support element has a contact surface, against which an inflow surface of the pump wheel starts.
  • the thrust bearing according to the invention thus has only a contact surface, since it was found that the axial forces occurring in Navysonrpumpen due to the pressure difference between the intake and the behind the impeller, ie in the region of the motor rotor, arranged space only counter to the flow direction of the fluid act. A contact surface for receiving axial forces is thus sufficient.
  • the axial forces produced by the electric motor due to magnetic forces also point in the same direction during assembly of the motor.
  • the support element carries a radial bearing of the shaft.
  • the support element preferably has a cylindrical opening in which a radial bearing is provided.
  • the radial bearing is preferably a bearing sleeve inserted into the opening of the support element.
  • the axial bearing of the shaft takes place at the same time, since the inflow surface of the impeller is applied to the contact surface of the support element during insertion of the shaft.
  • the wet-running pump has an impeller 10, is sucked by the rotation of medium in the direction of arrow 12 through an intake passage 14 and conveyed in the direction of an arrow 16 through a discharge channel 18.
  • intake passage 14 and the discharge channel 18 are part of a pump cover 20 in which the impeller 10 is arranged.
  • the impeller 10 is fixedly connected to a shaft 22.
  • a motor rotor 24 of a motor 26 is fixedly connected to the shaft 22.
  • the motor rotor 24 is surrounded by a windings 28 having stator core 30.
  • the stator core 30 is offset axially relative to the rotor 24 in FIG. 1 to the left, so that the magnetic Axialzug acts in the same direction as the hydraulic Axialzug.
  • the pumped by the pump 10 medium is used.
  • the medium passes in the conveying direction 12 behind the impeller 10 in a rotor chamber 32.
  • the motor rotor 24 is surrounded by a split pot 34. Through the split pot 34, a narrow gap between the motor rotor 24 and an inside of the split pot 34 is formed.
  • the containment shell 34 is connected to a housing half 36 and sealed against this.
  • the containment shell 34 and the housing half 36 may also form a unit.
  • a second housing half 38 is connected to the first housing half 36 and encloses the motor 26th
  • the bearing of the shaft 22 takes place in a first radial bearing 40, which has a bearing sleeve 42 held in the gap pot 34.
  • the opposite shaft end, on which the impeller 10 is fixed, is mounted according to the invention in a support member 44.
  • the support element has an opening 46.
  • the opening 46 is cylindrical and coaxial with the shaft 22.
  • a bearing sleeve 48 is arranged through which a sliding bearing is formed in the support member 44.
  • the axial mounting of the shaft 22 is effected according to the invention by the provided on the support element, the shaft 22 substantially radially extending contact surface.
  • the contact surface is a circular ring surrounding the opening 46.
  • an inflow surface 52 of the impeller 10 starts, i. an in the direction of the intake passage 14 opposite to the flow direction 12 facing surface. Since the axial forces occurring due to the pressure difference between the intake port 14 and the rotor chamber 32 against the flow direction 12, it is sufficient to provide a thrust surface on the support element as thrust bearing. Axial forces in the other direction, i. in the figure to the right, do not occur. Also caused by the motor 26 axial forces are in the figure to the left or are smaller than the forces occurring due to the pressure difference.
  • the inflow surface 52 is preferably convex ( Figure 2) but may be formed by geometric features such as e.g. Grooves or similar (FIG. 3, 4), which serve to improve the wetting of the contact surface between the contact surface 50 and the incident surface 52, and supplement it, and touches a flat, radially extending contact surface 50.
  • the contact surface 50 is concave, so that in addition a radial alignment of the impeller 10 takes place.
  • the design of inflow surface 52 and contact surface 50 can also be reversed.
  • the support element 44 is connected via webs 54 with the intake pipe 14. Preferably, three webs 54 are provided on the circumference of the center axis of the shaft 22 rotationally symmetrical support element.
  • the outer contour of the support element 44 is preferably streamlined, so that the medium flowing in the direction of arrow 12 is directed by the support member to the impeller 10.
  • the inflicted side of the support member is formed in the form of a partial ellipse in cross-section.
  • the rotor 24 and the impeller 10 is first attached to the shaft 22.
  • the impeller 10 is plugged onto the shaft 22 until it abuts against a shoulder 58.
  • the shaft end 60 of the shaft 22 is inserted into the bearing sleeve 48 arranged in the support element 44.
  • the inflow surface 52 of the impeller 10 abuts against the abutment surface 50 of the support member 44. Due to the mounting of the shaft 22 in the region of the impeller 10, a very accurate positioning of the impeller 10 in the pump cover 20 is possible. This ensures a minimum leakage gap.

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)

Claims (6)

  1. Pompe à rotor noyé, en particulier pour refouler du liquide de refroidissement dans des moteurs de véhicules, comportant
    une roue de pompe (10) montée en aval d'un canal d'entrée (14) dans le sens de refoulement (12),
    un rotor de moteur (24) relié à la roue de pompe (10) par l'intermédiaire d'un arbre commun (22),
    une chemise d'entrefer (34) entourant le rotor de moteur (24), le rotor de moteur (24) étant entouré de fluide à refouler pour le refroidissement, et
    au moins un palier radial (40, 48),
    caractérisée par
    un élément de support (44) prévu à l'intérieur du canal d'entrée (14) comportant une surface d'appui (50) contre laquelle s'appuie une surface d'afflux (52) de la roue de pompe (10) pour l'absorption de forces axiales.
  2. Pompe à rotor noyé selon la revendication 1, caractérisée en ce que la surface d'appui (50) et/ou la surface d'afflux (52) s'étendent radialement par rapport à l'arbre (22).
  3. Pompe à rotor noyé selon la revendication 1 ou 2, caractérisée en ce que la surface d'appui (50) et/ou la surface d'afflux (52) est convexe.
  4. Pompe à rotor noyé selon l'une des revendications 1 à 3, caractérisée en ce que la surface d'appui (50) ou de préférence la surface d'afflux (52) sont complétées par des éléments géométriques pour améliorer la lubrification.
  5. Pompe à rotor noyé selon l'une des revendications 1 à 4, caractérisée en ce que l'élément de support (44) porte un palier radial (48) de l'arbre (22).
  6. Pompe à rotor noyé selon l'une des revendications 1 à 5, caractérisée en ce que l'élément de support (44) est relié au canal d'entrée (14) par des entretoises (54).
EP02017197A 2001-08-18 2002-07-31 Pompe à rotor mouillé Expired - Fee Related EP1286055B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10140613 2001-08-18
DE10140613A DE10140613A1 (de) 2001-08-18 2001-08-18 Naßläuferpumpe

Publications (2)

Publication Number Publication Date
EP1286055A1 EP1286055A1 (fr) 2003-02-26
EP1286055B1 true EP1286055B1 (fr) 2006-02-08

Family

ID=7695908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02017197A Expired - Fee Related EP1286055B1 (fr) 2001-08-18 2002-07-31 Pompe à rotor mouillé

Country Status (4)

Country Link
US (1) US6939115B2 (fr)
EP (1) EP1286055B1 (fr)
DE (2) DE10140613A1 (fr)
ES (1) ES2253479T3 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2422636B (en) * 2003-03-28 2007-08-01 Richard Julius Gozdawa Gas compressor
DE10352487A1 (de) * 2003-07-22 2005-02-10 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit integriertem Motor
ATE402343T1 (de) * 2005-05-07 2008-08-15 Grundfos Management As Pumpenaggregat
JP4293207B2 (ja) * 2006-07-21 2009-07-08 株式会社日立製作所 電動ポンプ
DE102007010050A1 (de) * 2007-03-01 2008-09-04 Continental Automotive Gmbh Kreiselpumpe mit einem Spiralgehäuse
DE102007010051A1 (de) * 2007-03-01 2008-09-04 Continental Automotive Gmbh Kreiselpumpe mit einem Spiralgehäuse
JP5529714B2 (ja) * 2010-11-12 2014-06-25 三菱重工業株式会社 電動過給機の回転軸支持構造
DE102011075227A1 (de) * 2011-05-04 2012-11-08 BSH Bosch und Siemens Hausgeräte GmbH Axiallager für einen elektrischen Antrieb
US9360015B2 (en) 2012-07-16 2016-06-07 Magna Powertrain Of America, Inc. Submerged rotor electric water pump with structural wetsleeve
DE102012216196A1 (de) * 2012-09-12 2014-03-13 E.G.O. Elektro-Gerätebau GmbH Pumpe
DE102013014139A1 (de) * 2012-12-21 2014-06-26 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Elektromotorische Wasserpumpe
JP2014145269A (ja) * 2013-01-28 2014-08-14 Asmo Co Ltd 車両用ポンプ装置
EP3071291A4 (fr) 2013-11-20 2017-08-02 Endostim, Inc. Systèmes et procédés de stimulation électrique de systèmes biologiques
DE102016202417A1 (de) * 2016-02-17 2017-08-17 Bühler Motor GmbH Kreiselpumpe
KR102130283B1 (ko) * 2018-07-27 2020-08-05 주식회사 코아비스 임펠러 지지구조를 포함하는 워터 펌프
KR102365863B1 (ko) * 2021-06-09 2022-02-23 주식회사 코아비스 워터 펌프
DE102021207404A1 (de) 2021-07-13 2023-01-19 Robert Bosch Gesellschaft mit beschränkter Haftung Pumpenvorrichtung, insbesondere Magnetkupplungspumpenvorrichtung

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2799227A (en) * 1954-07-21 1957-07-16 Westinghouse Electric Corp Thrust bearing
FR1157493A (fr) * 1956-08-28 1958-05-29 Emerjy Perfectionnements aux groupes électro-pompes pour chauffage central et analogues
US3060861A (en) * 1959-06-15 1962-10-30 Klein Schanzlin & Becker Ag Rotary pumps without shaft packing
NL120678C (fr) * 1960-02-23
US3090655A (en) * 1960-10-14 1963-05-21 Gen Motors Corp Thrust bearing
FR1272780A (fr) * 1960-11-02 1961-09-29 Hollesens Fabrikker H Perfectionnements apportés aux pompes à liquides entraînées par moteurs électriques
US3186513A (en) * 1962-11-09 1965-06-01 James T E Dunn Method and mechanism for lubricating the bearings of a pump rotor and motor combination for pumping an abradant-containing liquid
FR1414030A (fr) * 1964-09-04 1965-10-15 Rech S Et D Expl S Ind Soc D Perfectionnements aux motopompes
US3433164A (en) * 1967-03-03 1969-03-18 Buffalo Forge Co Motor-pump unit
DE1811430A1 (de) * 1968-11-25 1970-06-11 Gummi Jaeger Kg Gmbh & Cie Hydraulische Stroemungsmaschine
GB1398364A (en) * 1972-09-14 1975-06-18 Eheim G Motor and pump combination
DE2338395C3 (de) * 1973-07-28 1984-04-05 SWF-Spezialfabrik für Autozubehör Gustav Rau GmbH, 7120 Bietigheim-Bissingen Kraftstoffförderpumpe, insbesondere für Kraftfahrzeuge
JPS5735196A (en) * 1980-08-09 1982-02-25 Sansou Denki Kk Motor-driven pump
JPS5773892A (en) * 1980-10-27 1982-05-08 Teikoku Denki Seisakusho:Kk Operation monitor for magnetic coupling pump
JPS60234120A (ja) * 1984-05-07 1985-11-20 Canon Inc 動圧スラスト軸受
JPH0647991B2 (ja) * 1986-05-15 1994-06-22 三菱電機株式会社 スクロ−ル圧縮機
FR2649450A1 (fr) * 1989-07-07 1991-01-11 Rena Sa Pompe rotative a entrainement electrique
US5599112A (en) * 1995-08-17 1997-02-04 Ansimag Inc. Axial bearing having a variable coefficient of friction for monitoring wear
DE19545561A1 (de) 1995-12-07 1997-06-12 Pierburg Ag Pumpe-Motoreinheit
GB2307947B (en) * 1995-12-08 1999-08-18 Aisan Ind Magnetically coupled pump
DE19618767A1 (de) * 1996-05-10 1997-11-13 Wilo Gmbh Selbsteinstellendes Axiallager für Hochdruckkreiselpumpen
DE19956380C1 (de) * 1999-11-24 2001-01-04 Bosch Gmbh Robert Flüssigkeitspumpe mit einem Motorgehäuse und Verfahren zur Herstellung eines Motorgehäuses
US6309188B1 (en) * 2000-06-07 2001-10-30 Michael Danner Magnetic drive centrifugal pump having ceramic bearings, ceramic thrust washers, and a water cooling channel

Also Published As

Publication number Publication date
EP1286055A1 (fr) 2003-02-26
DE10140613A1 (de) 2003-03-06
ES2253479T3 (es) 2006-06-01
US20030035740A1 (en) 2003-02-20
US6939115B2 (en) 2005-09-06
DE50205779D1 (de) 2006-04-20

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