EP1286055A1 - Pompe à rotor mouillé - Google Patents

Pompe à rotor mouillé Download PDF

Info

Publication number
EP1286055A1
EP1286055A1 EP02017197A EP02017197A EP1286055A1 EP 1286055 A1 EP1286055 A1 EP 1286055A1 EP 02017197 A EP02017197 A EP 02017197A EP 02017197 A EP02017197 A EP 02017197A EP 1286055 A1 EP1286055 A1 EP 1286055A1
Authority
EP
European Patent Office
Prior art keywords
shaft
support element
pump
contact surface
rotor
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
EP02017197A
Other languages
German (de)
English (en)
Other versions
EP1286055B1 (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 rotor pump, i.e. a pump-motor unit that for example from a centrifugal pump and an electric DC motor consists.
  • a wet rotor pump i.e. a pump-motor unit that for example from a centrifugal pump and an electric DC motor consists.
  • Such wet rotor pumps are particularly suitable for conveying coolant suitable in motor vehicle engines.
  • a wet rotor pump with a pump wheel draws a medium through a suction channel and towards one Dispensing channel promotes.
  • the impeller is attached to a shaft.
  • On the same Shaft is attached to a motor rotor of a motor.
  • the Motor rotor flows around.
  • To convey electrically conductive liquids is the Motor rotor surrounded with a can.
  • the stand package of the engine with the Windings is outside the containment shell, which is preferably made of plastic exists, arranged. Through the can, through the between the motor rotor and a gap is formed in the inside of the pot, flow in the medium sealing of the motor rotor from the environment is guaranteed.
  • Wet rotor pumps used to pump electrically non-conductive Liquids such as petrol are not used Containment shell, as a seal against the stand package and Windings is not required.
  • the common shaft carrying the motor rotor and the impeller is through two radial bearings in the area of the pump wheel or at the opposite end the shaft is stored in the containment shell or in a housing. Because of in that Differential pressures occurring in the pumped medium cause axial forces. additionally are axial forces on the shaft due to the magnetic forces transfer. For axial storage, it is known to close an axial bearing on the rotor fasten, which is supported on a bearing seat inserted in the containment shell. Both as radial and as axial bearings can only be used with wet rotor pumps Plain bearings are used because the life of ball and roller bearings is too low within liquids. The provision of a thrust bearing between the containment shell and the rotor increases the assembly effort of the wet rotor pump.
  • the object of the invention is the axial mounting of the shaft Simplify wet rotor pump and reduce assembly effort.
  • the wet rotor pump has one provided in the intake duct Support element on.
  • the support element which in the flow direction Pump wheel connected upstream is used to absorb axial forces.
  • This points the support element has a contact surface against which an inflow surface of the Pump wheel starts up.
  • the axial bearing according to the invention thus has only one Contact surface on, since it was found that the axial forces occurring at Wet rotor pumps due to the pressure difference between the intake duct and the behind the impeller, i.e. in the area of the motor rotor only act against the flow direction of the medium.
  • a The contact surface for absorbing axial forces is therefore sufficient. Also on Axial forces caused by the electric motor due to magnetic forces point in the same direction when installing the motor.
  • the assembly is the wet rotor pump considerably simplified, because when assembling the pump the inflow surface of the impeller automatically on the contact surface of the Support element rests and thus ensures the axial bearing of the shaft is. A separate installation of an additional axial bearing is not necessary. An additional bearing seat is therefore not necessary.
  • the support element carries a radial bearing of the shaft.
  • the support element preferably has a cylindrical opening, in a radial bearing is provided.
  • the radial bearing is preferably around a bearing sleeve inserted into the opening of the support element.
  • the wet rotor pump has a pump wheel 10, through the rotation of which medium in the direction of an arrow 12 through an intake duct 14 and in Direction of an arrow 16 is conveyed through a delivery channel 18.
  • the Intake duct 14 and discharge duct 18 are part of a pump cover 20, in which the pump wheel 10 is arranged.
  • the impeller 10 has a shaft 22 firmly connected.
  • a motor rotor 24 Motor 26 firmly connected.
  • the motor rotor 24 is of a winding 28 having stand package 30 surrounded.
  • the stand package 30 is opposite the motor rotor or rotor 24 axially offset to the left in FIG. 1, so that the magnetic axial pull acts in the same direction as the hydraulic axial pull.
  • the pump 26 is used to cool the motor 26 Medium.
  • the medium passes behind the pump wheel in the conveying direction 12 10 in a rotor chamber 32.
  • electronic components come into contact with the medium.
  • the Motor rotor 24 surrounded with a containment shell 34. Through the can 34 is a narrow gap between the motor rotor 24 and an inside of the containment shell 34 trained.
  • the can 34 is connected to a housing half 36 and sealed against this.
  • the containment shell 34 and the housing half 36 can also form a unit.
  • a second housing half 38 is with the first Housing half 36 connected and encloses the motor 26.
  • the shaft 22 is supported in a first radial bearing 40, which is a the containment shell 34 has bearing sleeve 42 held.
  • the opposite Shaft end to which the pump wheel 10 is attached is according to the invention in a support element 44 is mounted.
  • the support element has a Opening 46 on.
  • the opening 46 is cylindrical and coaxial with the shaft 22.
  • a bearing sleeve 48 through which a plain bearing in the Support element 44 is formed.
  • the axial bearing of the shaft 22 is carried out according to the invention by the Support element provided, extending essentially radially to the shaft 22 Approach surface.
  • the contact surface is an opening 46 surrounding annulus.
  • Axial forces into the other Direction i.e. to the right in the figure, do not occur. Even those through the Axial forces caused by motor 26 point to the left or are in the figure less than the forces caused by the pressure difference.
  • the inflow surface 52 is preferably convex (FIG. 2), but can through geometric elements such as Grooves or similar (Fig. 3,4) that an improved Wetting the contact surface between the contact surface 50 and the inflow surface 52 serve, be supplemented and touches a flat, radially extending contact surface 50. Possibly. the contact surface 50 is concave, so that in addition a radial Alignment of the pump wheel 10 takes place.
  • the design of the inflow surface 52 and contact surface 54 can also be reversed.
  • the support element 44 is connected to the intake pipe 14 via webs 54. Preferably on the circumference of the shaft 22 to the central axis rotationally symmetrical support element three webs 54 are provided.
  • the outer contour of the support element 44 is preferably streamlined, so that the medium flowing in the direction of arrow 12 from the support element the impeller 10 is steered.
  • the inflow side of the Support element in cross-section partially elliptical.
  • the rotor 24 and the pump wheel 10 are first placed on the shaft 22 attached. Grooves or the like can be used for fixation. be provided. The impeller 10 is pushed onto the shaft 22 until it abuts a shoulder 58. The shaft end 60 of the shaft 22 is then inserted into the support element 44 arranged bearing sleeve 48 inserted. After inserting the shaft 22 in the sleeve 48 is the inflow surface 52 of the impeller 10 on the thrust surface 50 of the support element 44.
  • By mounting the shaft 22 in the area of Pump wheel 10 is a very precise positioning of the pump wheel 10 in the Pump cover 20 possible. This ensures a minimal 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)
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
DE10140613A DE10140613A1 (de) 2001-08-18 2001-08-18 Naßläuferpumpe
DE10140613 2001-08-18

Publications (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10352487A1 (de) * 2003-07-22 2005-02-10 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit integriertem Motor

Families Citing this family (16)

* 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
PL1719916T3 (pl) * 2005-05-07 2009-01-30 Grundfos Management As Agregat pompowy
JP4293207B2 (ja) * 2006-07-21 2009-07-08 株式会社日立製作所 電動ポンプ
DE102007010051A1 (de) * 2007-03-01 2008-09-04 Continental Automotive Gmbh Kreiselpumpe mit einem Spiralgehäuse
DE102007010050A1 (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
WO2015077425A1 (fr) 2013-11-20 2015-05-28 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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1157493A (fr) * 1956-08-28 1958-05-29 Emerjy Perfectionnements aux groupes électro-pompes pour chauffage central et analogues
FR1272780A (fr) * 1960-11-02 1961-09-29 Hollesens Fabrikker H Perfectionnements apportés aux pompes à liquides entraînées par moteurs électriques
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
US3853429A (en) * 1972-09-14 1974-12-10 Eheim G Motor pump combination

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US2799227A (en) * 1954-07-21 1957-07-16 Westinghouse Electric Corp Thrust bearing
US3060861A (en) * 1959-06-15 1962-10-30 Klein Schanzlin & Becker Ag Rotary pumps without shaft packing
NL261455A (fr) * 1960-02-23
US3090655A (en) * 1960-10-14 1963-05-21 Gen Motors Corp Thrust bearing
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
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1157493A (fr) * 1956-08-28 1958-05-29 Emerjy Perfectionnements aux groupes électro-pompes pour chauffage central et analogues
FR1272780A (fr) * 1960-11-02 1961-09-29 Hollesens Fabrikker H Perfectionnements apportés aux pompes à liquides entraînées par moteurs électriques
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
US3853429A (en) * 1972-09-14 1974-12-10 Eheim G Motor pump combination

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10352487A1 (de) * 2003-07-22 2005-02-10 BSH Bosch und Siemens Hausgeräte GmbH Pumpe mit integriertem Motor

Also Published As

Publication number Publication date
ES2253479T3 (es) 2006-06-01
US20030035740A1 (en) 2003-02-20
DE10140613A1 (de) 2003-03-06
EP1286055B1 (fr) 2006-02-08
US6939115B2 (en) 2005-09-06
DE50205779D1 (de) 2006-04-20

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