EP2339181A3 - EC motor circulation pump - Google Patents

EC motor circulation pump Download PDF

Info

Publication number
EP2339181A3
EP2339181A3 EP10015190.1A EP10015190A EP2339181A3 EP 2339181 A3 EP2339181 A3 EP 2339181A3 EP 10015190 A EP10015190 A EP 10015190A EP 2339181 A3 EP2339181 A3 EP 2339181A3
Authority
EP
European Patent Office
Prior art keywords
motor
axial force
stator
shaft
pump 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.)
Withdrawn
Application number
EP10015190.1A
Other languages
German (de)
French (fr)
Other versions
EP2339181A2 (en
Inventor
Bernd-Thorsten Stock
Bernd DÜRRER
Ditmar Knetsch
Günter Strelow
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.)
Wilo SE
Original Assignee
Wilo SE
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 Wilo SE filed Critical Wilo SE
Publication of EP2339181A2 publication Critical patent/EP2339181A2/en
Publication of EP2339181A3 publication Critical patent/EP2339181A3/en
Withdrawn legal-status Critical Current

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
    • 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
    • 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
    • F04D29/041—Axial thrust balancing
    • F04D29/0413—Axial thrust balancing hydrostatic; hydrodynamic thrust 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
    • F04D29/042—Axially shiftable rotors
    • 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
    • F04D29/08—Sealings
    • F04D29/16—Sealings between pressure and suction sides
    • F04D29/165—Sealings between pressure and suction sides especially adapted for liquid pumps
    • F04D29/167—Sealings between pressure and suction sides especially adapted for liquid pumps of a centrifugal flow wheel
    • 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
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures
    • F04D29/2266—Rotors specially for centrifugal pumps with special measures for sealing or thrust balance

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)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Die Erfindung betrifft eine Motorkreiselpumpe mit einem Synchron-Elektromotor insbesondere einem elektronisch kommutierten Gleichstrommotor, wobei das Pumpenlaufrad auf der Welle des Motorenrotors sitzt, und statt eines Axiallagers die Welle allein durch Radiallager gehalten und axial begrenzt verschieblich ist in einer Richtung, bei der der Motorenrotor um ein bestimmtes Maß aus dem Motorenstator axial zum Pumpeneinlass hin beweglich ist, wobei die vom Magnetfeld des Stators auf den Motorenrotor ausgeübte Axialkraft der vom Pumpenlaufrad erzeugten Axialkraft entgegengesetzt ist, wobei das Pumpenlaufrad auf seiner Rückseite Hilfsschaufeln aufweist, die eine axiale Kraft auf die Welle bewirken, die die axiale Kraft des Stators unterstützt.The invention relates to a motor centrifugal pump with a synchronous electric motor, in particular an electronically commutated DC motor, wherein the pump impeller sits on the shaft of the motor rotor, and instead of a thrust bearing, the shaft is held solely by radial bearings and axially limited displacement in one direction, in which the motor rotor order a certain amount is axially movable from the motor stator to the pump inlet, the axial force exerted on the motor rotor by the magnetic field of the stator being opposite to the axial force generated by the pump impeller, the pump impeller having auxiliary blades on its rear side causing an axial force on the shaft; which supports the axial force of the stator.

EP10015190.1A 2009-12-23 2010-12-01 EC motor circulation pump Withdrawn EP2339181A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009060549A DE102009060549A1 (en) 2009-12-23 2009-12-23 EC motor centrifugal pump

Publications (2)

Publication Number Publication Date
EP2339181A2 EP2339181A2 (en) 2011-06-29
EP2339181A3 true EP2339181A3 (en) 2017-04-05

Family

ID=43618218

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10015190.1A Withdrawn EP2339181A3 (en) 2009-12-23 2010-12-01 EC motor circulation pump

Country Status (2)

Country Link
EP (1) EP2339181A3 (en)
DE (1) DE102009060549A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104024647B (en) 2011-12-27 2016-08-24 格兰富控股联合股份公司 Pump assembly

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1634317A (en) * 1925-07-22 1927-07-05 Worthington Pump & Mach Corp Impeller balancing and sealing device
DE1528698A1 (en) * 1964-09-03 1970-04-09 Crane Co Motor-driven pump
DE9003738U1 (en) * 1990-03-30 1991-01-31 Siemens AG, 8000 München Pump, in particular a waste water pump for dishwashers or washing machines driven by a single-phase synchronous motor
US6264441B1 (en) * 1999-03-16 2001-07-24 Askoll Tre S.P.A. Pump for the drain outlet of washing machines
DE69922729T2 (en) * 1998-04-20 2005-12-01 Nikkiso Co., Ltd. Achsschubausgleich
EP1719916A1 (en) * 2005-05-07 2006-11-08 Grundfos Management A/S Pump unit

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759538C (en) * 1939-03-23 1954-04-22 Siemens Ag Arrangement to compensate for the axial thrust in centrifugal pumps
DE3804602A1 (en) * 1988-02-13 1989-08-24 Klein Schanzlin & Becker Ag Explosionproof split-cage motor
US5385454A (en) * 1992-04-14 1995-01-31 Ebara Corporation Bearing device for use in a canned motor
EP0657653B1 (en) * 1993-12-08 1999-08-04 Ebara Corporation Canned motor pump
DE19513962B4 (en) * 1995-04-13 2007-06-28 Allweiler Ag Radial centrifugal pump
WO1997008807A1 (en) * 1995-08-24 1997-03-06 Sulzer Electronics Ag Electric motor
DE19541245A1 (en) * 1995-11-06 1997-05-07 Klein Schanzlin & Becker Ag Plain bearing for a machine shaft
DE29610799U1 (en) * 1996-06-20 1997-02-27 Klaus Union Armaturen Hydrodynamic plain bearing for a rotor of a pump
DE19631824A1 (en) * 1996-08-07 1998-02-12 Klein Schanzlin & Becker Ag Single stage centrifugal pump for fluids
DE29716110U1 (en) * 1997-09-08 1999-01-14 Speck Pumpenfabrik Walter Spec Magnetic clutch pump
DE10032913C2 (en) * 2000-07-06 2002-11-07 Draeger Medical Ag Gas delivery unit for a ventilation system
DE10316142A1 (en) * 2003-04-09 2004-11-04 Berstorff Gmbh Drive unit for a granulator and granulator with such a drive unit
DE202006005189U1 (en) * 2006-03-31 2007-08-16 H. Wernert & Co. Ohg Centrifugal pump with coaxial magnetic coupling
EP2040353A1 (en) * 2007-09-21 2009-03-25 Siemens Aktiengesellschaft Rotor can and method for its manufacture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1634317A (en) * 1925-07-22 1927-07-05 Worthington Pump & Mach Corp Impeller balancing and sealing device
DE1528698A1 (en) * 1964-09-03 1970-04-09 Crane Co Motor-driven pump
DE9003738U1 (en) * 1990-03-30 1991-01-31 Siemens AG, 8000 München Pump, in particular a waste water pump for dishwashers or washing machines driven by a single-phase synchronous motor
DE69922729T2 (en) * 1998-04-20 2005-12-01 Nikkiso Co., Ltd. Achsschubausgleich
US6264441B1 (en) * 1999-03-16 2001-07-24 Askoll Tre S.P.A. Pump for the drain outlet of washing machines
EP1719916A1 (en) * 2005-05-07 2006-11-08 Grundfos Management A/S Pump unit

Also Published As

Publication number Publication date
DE102009060549A1 (en) 2011-06-30
EP2339181A2 (en) 2011-06-29

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