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EP1593851A3 - Method for venting a centrifugal pump - Google Patents

Method for venting a centrifugal pump Download PDF

Info

Publication number
EP1593851A3
EP1593851A3 EP05003976A EP05003976A EP1593851A3 EP 1593851 A3 EP1593851 A3 EP 1593851A3 EP 05003976 A EP05003976 A EP 05003976A EP 05003976 A EP05003976 A EP 05003976A EP 1593851 A3 EP1593851 A3 EP 1593851A3
Authority
EP
European Patent Office
Prior art keywords
impeller
venting
pump
centrifugal pump
speed
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
EP05003976A
Other languages
German (de)
French (fr)
Other versions
EP1593851B1 (en
EP1593851A2 (en
Inventor
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 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 Wilo AG filed Critical Wilo AG
Publication of EP1593851A2 publication Critical patent/EP1593851A2/en
Publication of EP1593851A3 publication Critical patent/EP1593851A3/en
Application granted granted Critical
Publication of EP1593851B1 publication Critical patent/EP1593851B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D9/00—Priming; Preventing vapour lock
    • F04D9/02—Self-priming pumps

Landscapes

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

Abstract

Die Erfindung betrifft ein Verfahren zum Entlüften einer Kreiselpumpe, insbesondere im Wasserkreislauf einer Heizungsanlage oder eines Warmwasser erzeugenden Boilers, wobei die Pumpe vorzugsweise direkt im oder am Ein- oder Auslass eines Heizkörpers angeordnet ist. Zum Befreien des Laufrades und/oder des das Laufrad umgebenden Raumes von Luft, wird die Pumpendrehzahl von der Normaldrehzahl insbesondere kurzzeitig auf eine solch niedrige Drehzahl heruntergesteuert, dass sich die Luft vom Laufrad trennt und aus dem Laufradraum austritt.The invention relates to a method for venting a centrifugal pump, in particular in the water cycle of a heating system or a hot water-producing boiler, wherein the pump is preferably arranged directly in or at the inlet or outlet of a radiator. To free the impeller and / or the space surrounding the impeller of air, the pump speed of the normal speed is in particular briefly downshifted to such a low speed that the air separates from the impeller and exits the impeller space.

EP05003976.7A 2004-05-04 2005-02-24 Method for venting a centrifugal pump Expired - Lifetime EP1593851B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410021988 DE102004021988A1 (en) 2004-05-04 2004-05-04 Method for venting a centrifugal pump
DE102004021988 2004-05-04

Publications (3)

Publication Number Publication Date
EP1593851A2 EP1593851A2 (en) 2005-11-09
EP1593851A3 true EP1593851A3 (en) 2010-12-29
EP1593851B1 EP1593851B1 (en) 2016-11-16

Family

ID=34933909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05003976.7A Expired - Lifetime EP1593851B1 (en) 2004-05-04 2005-02-24 Method for venting a centrifugal pump

Country Status (2)

Country Link
EP (1) EP1593851B1 (en)
DE (1) DE102004021988A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014110911A1 (en) * 2014-07-31 2016-02-04 Xylem Ip Management S.À.R.L. Method for operating a liquid delivery system and delivery pump
CN117738918A (en) * 2022-09-22 2024-03-22 格兰富控股公司 Air discharge

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841793A (en) * 1973-09-24 1974-10-15 Gen Motors Corp Motor-pump system for preventing a vapor lock
DE4422297C1 (en) * 1994-06-25 1995-08-31 Viessmann Werke Kg Control of circulation pumps
EP0964158A2 (en) * 1998-06-12 1999-12-15 Linde Aktiengesellschaft Pump operating process for boiling refrigerants or coolants

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520538A1 (en) * 1985-06-07 1986-12-11 Kraftwerk Union AG, 4330 Mülheim Method and device for operating a centrifugal pump
DE10145410A1 (en) * 2001-09-14 2003-04-03 Wilo Gmbh Pump in the valve housing

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841793A (en) * 1973-09-24 1974-10-15 Gen Motors Corp Motor-pump system for preventing a vapor lock
DE4422297C1 (en) * 1994-06-25 1995-08-31 Viessmann Werke Kg Control of circulation pumps
EP0964158A2 (en) * 1998-06-12 1999-12-15 Linde Aktiengesellschaft Pump operating process for boiling refrigerants or coolants

Also Published As

Publication number Publication date
EP1593851B1 (en) 2016-11-16
DE102004021988A1 (en) 2005-11-24
EP1593851A2 (en) 2005-11-09

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