WO2013079179A3 - Wet-rotor motor pump - Google Patents

Wet-rotor motor pump Download PDF

Info

Publication number
WO2013079179A3
WO2013079179A3 PCT/EP2012/004852 EP2012004852W WO2013079179A3 WO 2013079179 A3 WO2013079179 A3 WO 2013079179A3 EP 2012004852 W EP2012004852 W EP 2012004852W WO 2013079179 A3 WO2013079179 A3 WO 2013079179A3
Authority
WO
WIPO (PCT)
Prior art keywords
pump chamber
impeller
pump
space
annular space
Prior art date
Application number
PCT/EP2012/004852
Other languages
German (de)
French (fr)
Other versions
WO2013079179A4 (en
WO2013079179A2 (en
Inventor
Günter Strelow
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=47603521&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2013079179(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Wilo Se filed Critical Wilo Se
Priority to EP12818777.0A priority Critical patent/EP2786021B1/en
Priority to CN201280062017.9A priority patent/CN103998787B/en
Publication of WO2013079179A2 publication Critical patent/WO2013079179A2/en
Publication of WO2013079179A3 publication Critical patent/WO2013079179A3/en
Publication of WO2013079179A4 publication Critical patent/WO2013079179A4/en

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
    • F04D13/0613—Special connection between the rotor compartments
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/60—Shafts
    • F05D2240/61—Hollow

Abstract

Wet-rotor motor pump comprising a can (5) which separates the stator (4) from the motor shaft (2) that is mounted in the can and carries rotor laminations (3), said motor shaft projecting into the pump chamber (10) and carrying, in said pump chamber, the impeller (11). A coaxial annular space (12) is provided between a separating wall (9) separating the can interior from the pump chamber and the rear of the impeller, the pumped liquid flowing from the annular space into the rotor space surrounded by the can through at least one flow passage in the separating wall, and flowing back to the pump chamber once it has permeated the rotor space, especially through the longitudinal hollow space (18) of the motor shaft. The rear of the impeller has a coaxial annular projection (11) that separates the rear annular space surrounding the motor shaft from the rest of the pump chamber, apart from at least one throttle gap (13) extending through the annular projection. Pumped liquid flows from the pump pressure side into the annular space through the throttle gap in a throttled manner, said annular space being connected to the pump intake side by at least one throttled opening (15, 16) in the rear wall of the impeller and/or in the wall of the hollow shaft of the motor.
PCT/EP2012/004852 2011-11-29 2012-11-23 Wet-rotor motor pump WO2013079179A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP12818777.0A EP2786021B1 (en) 2011-11-29 2012-11-23 Wet-rotor motor pump
CN201280062017.9A CN103998787B (en) 2011-11-29 2012-11-23 Wet type rotor motor pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011119626.2 2011-11-29
DE102011119626A DE102011119626A1 (en) 2011-11-29 2011-11-29 Glandless pump motor

Publications (3)

Publication Number Publication Date
WO2013079179A2 WO2013079179A2 (en) 2013-06-06
WO2013079179A3 true WO2013079179A3 (en) 2013-12-27
WO2013079179A4 WO2013079179A4 (en) 2014-02-13

Family

ID=47603521

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/004852 WO2013079179A2 (en) 2011-11-29 2012-11-23 Wet-rotor motor pump

Country Status (4)

Country Link
EP (1) EP2786021B1 (en)
CN (1) CN103998787B (en)
DE (1) DE102011119626A1 (en)
WO (1) WO2013079179A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3017907B1 (en) * 2014-02-26 2019-01-25 Wilo Salmson France FLUID CIRCULATION PUMP COMPRISING TWO SUBSETS ONE OF WHICH IS REMOVABLE IN RELATION TO THE OTHER
EP3425221B1 (en) * 2017-07-06 2019-11-20 Grundfos Holding A/S Pump bearing retainer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1528698A1 (en) * 1964-09-03 1970-04-09 Crane Co Motor-driven pump
US4047847A (en) * 1975-03-26 1977-09-13 Iwaki Co., Ltd. Magnetically driven centrifugal pump

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280750A (en) * 1964-09-17 1966-10-25 Crane Co Motor driven pump
DE3232473A1 (en) 1982-09-01 1984-03-01 Reinecker Heyko Dipl Ing Fh Centrifugal pump with split-cage magnetic clutch
DE3639720C1 (en) * 1986-11-20 1993-04-29 Reinecker Heyko Pump with canned motor or canned magnetic clutch drive
DE8708334U1 (en) * 1987-06-12 1987-07-30 Dickow-Pumpen Kg, 8264 Waldkraiburg, De
US5248245A (en) * 1992-11-02 1993-09-28 Ingersoll-Dresser Pump Company Magnetically coupled centrifugal pump with improved casting and lubrication
GB2290113B (en) * 1994-05-31 1998-07-15 Ingersoll Dresser Pump Co Centrifugal pump
DE29610799U1 (en) * 1996-06-20 1997-02-27 Klaus Union Armaturen Hydrodynamic plain bearing for a rotor of a pump
DE10240800B4 (en) * 2002-08-30 2005-03-24 Munsch Chemie-Pumpen Gmbh Pump for chemically aggressive fluids
DE10322464B4 (en) 2003-05-16 2012-05-03 Ksb Ag Canned motor pump
DE102004019721A1 (en) * 2004-03-18 2005-10-06 Medos Medizintechnik Ag pump
CN201209565Y (en) * 2008-05-29 2009-03-18 杭州大路实业有限公司 Magnetic pump preventing wear of granule
CN201297259Y (en) * 2008-12-01 2009-08-26 张良光 High-temperature high-pressure magnetic pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1528698A1 (en) * 1964-09-03 1970-04-09 Crane Co Motor-driven pump
US4047847A (en) * 1975-03-26 1977-09-13 Iwaki Co., Ltd. Magnetically driven centrifugal pump

Also Published As

Publication number Publication date
EP2786021B1 (en) 2020-02-12
WO2013079179A4 (en) 2014-02-13
EP2786021A2 (en) 2014-10-08
DE102011119626A1 (en) 2013-05-29
WO2013079179A2 (en) 2013-06-06
CN103998787A (en) 2014-08-20
CN103998787B (en) 2017-11-17

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