EP2138723A3 - Centrifugal pump with free flow wheel - Google Patents

Centrifugal pump with free flow wheel Download PDF

Info

Publication number
EP2138723A3
EP2138723A3 EP09007443A EP09007443A EP2138723A3 EP 2138723 A3 EP2138723 A3 EP 2138723A3 EP 09007443 A EP09007443 A EP 09007443A EP 09007443 A EP09007443 A EP 09007443A EP 2138723 A3 EP2138723 A3 EP 2138723A3
Authority
EP
European Patent Office
Prior art keywords
centrifugal pump
flow
free flow
flow wheel
suction
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
EP09007443A
Other languages
German (de)
French (fr)
Other versions
EP2138723B1 (en
EP2138723A2 (en
Inventor
Rolf Witzel
Christoph Jäger
Heinrich Braun
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.)
KSB SE and Co KGaA
Original Assignee
KSB AG
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 KSB AG filed Critical KSB AG
Publication of EP2138723A2 publication Critical patent/EP2138723A2/en
Publication of EP2138723A3 publication Critical patent/EP2138723A3/en
Application granted granted Critical
Publication of EP2138723B1 publication Critical patent/EP2138723B1/en
Active 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
    • F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • 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
    • F04D29/2238—Special flow patterns
    • F04D29/2244—Free vortex
    • 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
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/688—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous
    • F04D7/045—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous with means for comminuting, mixing stirring or otherwise treating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Die vorliegende Erfindung betrifft eine Kreiselpumpe mit einem in einem Gehäuse rotierend angeordneten Freistromlaufrad, wobei zwischen einer saugseitigen Gehäusewand und dem Freistromlaufrad ein schaufelloser Raum angeordnet ist.The present invention relates to a centrifugal pump with a rotating in a housing arranged freewheel impeller, wherein between a suction-side housing wall and the free-flow impeller, a blade-less space is arranged.

Die Kreiselpumpe ist mit einer Einrichtung zur Vermeidung des Abreißens der Strömung versehen, wobei an der saugseitigen Gehäusewand mindestens ein, in den schaufellosen Raum vorstehendes, ein- oder mehrteiliges, strömungsbeeinflussendes Mittel angeordnet ist.The centrifugal pump is provided with a device for preventing the tearing off of the flow, wherein at least one, in the blade-less space projecting, one or more parts, flow-influencing means is arranged on the suction-side housing wall.

Das strömungsbeeinflussende Mittel (10) ist mit mindestens einem Reißmittel (21, 23) versehen (Fig. 1).

Figure imgaf001
The flow-influencing means (10) is provided with at least one tear means (21, 23) (Fig. 1).
Figure imgaf001
EP09007443.6A 2008-06-27 2009-06-05 Centrifugal pump with free flow wheel Active EP2138723B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008030112A DE102008030112A1 (en) 2008-06-27 2008-06-27 Centrifugal pump with free-flow impeller

Publications (3)

Publication Number Publication Date
EP2138723A2 EP2138723A2 (en) 2009-12-30
EP2138723A3 true EP2138723A3 (en) 2010-07-28
EP2138723B1 EP2138723B1 (en) 2017-09-13

Family

ID=40873240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09007443.6A Active EP2138723B1 (en) 2008-06-27 2009-06-05 Centrifugal pump with free flow wheel

Country Status (3)

Country Link
EP (1) EP2138723B1 (en)
CN (1) CN101614209B (en)
DE (1) DE102008030112A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2492362C2 (en) * 2010-11-15 2013-09-10 Сандайн Корпорэйшн Impeller for centrifugal pump (versions)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212654B4 (en) * 2015-07-07 2021-10-21 BSH Hausgeräte GmbH HOUSEHOLD APPLIANCE
DE102019004263A1 (en) * 2019-06-18 2020-12-24 KSB SE & Co. KGaA Centrifugal pump and method for detecting the status of a centrifugal pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1453735A1 (en) * 1962-06-01 1969-01-23 Eta Corp Turbo resp. Centrifugal pump
DE1528651A1 (en) * 1965-01-23 1969-07-10 Albert Blum Dirty water pump
DE7636700U1 (en) * 1976-11-22 1977-10-06 Klein, Schanzlin & Becker Ag, 6710 Frankenthal CENTRIFUGAL PUMP WITH AN OPEN IMPELLER
FR2385921A1 (en) * 1977-03-31 1978-10-27 Klein Schanzlin & Becker Ag CENTRIFUGAL PUMP WITH OPEN BLADE WHEEL
EP1840379A2 (en) * 2006-03-28 2007-10-03 KSB Aktiengesellschaft Rotary pump with free flow wheel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1453738A1 (en) * 1963-01-28 1969-01-30 Eisele Soehne Franz Cutting unit for liquid manure pumps
SE525412C2 (en) * 2003-10-20 2005-02-15 Itt Mfg Enterprises Inc Centrifugal pump for contaminated liquids, comprises wheel with scoops and cover plates with spiral grooves around casing inlet

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1453735A1 (en) * 1962-06-01 1969-01-23 Eta Corp Turbo resp. Centrifugal pump
DE1528651A1 (en) * 1965-01-23 1969-07-10 Albert Blum Dirty water pump
DE7636700U1 (en) * 1976-11-22 1977-10-06 Klein, Schanzlin & Becker Ag, 6710 Frankenthal CENTRIFUGAL PUMP WITH AN OPEN IMPELLER
FR2385921A1 (en) * 1977-03-31 1978-10-27 Klein Schanzlin & Becker Ag CENTRIFUGAL PUMP WITH OPEN BLADE WHEEL
EP1840379A2 (en) * 2006-03-28 2007-10-03 KSB Aktiengesellschaft Rotary pump with free flow wheel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2492362C2 (en) * 2010-11-15 2013-09-10 Сандайн Корпорэйшн Impeller for centrifugal pump (versions)

Also Published As

Publication number Publication date
EP2138723B1 (en) 2017-09-13
DE102008030112A1 (en) 2009-12-31
EP2138723A2 (en) 2009-12-30
CN101614209B (en) 2014-12-10
CN101614209A (en) 2009-12-30

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