EP1593851A2 - Méthode pour la désaération de pompes centrifuges - Google Patents

Méthode pour la désaération de pompes centrifuges Download PDF

Info

Publication number
EP1593851A2
EP1593851A2 EP05003976A EP05003976A EP1593851A2 EP 1593851 A2 EP1593851 A2 EP 1593851A2 EP 05003976 A EP05003976 A EP 05003976A EP 05003976 A EP05003976 A EP 05003976A EP 1593851 A2 EP1593851 A2 EP 1593851A2
Authority
EP
European Patent Office
Prior art keywords
pump
speed
impeller
air
venting
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)
English (en)
Other versions
EP1593851A3 (fr
EP1593851B1 (fr
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/fr
Publication of EP1593851A3 publication Critical patent/EP1593851A3/fr
Application granted granted Critical
Publication of EP1593851B1 publication Critical patent/EP1593851B1/fr
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
    • 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

Definitions

  • the invention relates to a method for venting a centrifugal pump, especially in the water cycle of a heating system or hot water generating boilers, wherein the pump is preferably located directly in or at the inlet or outlet of a radiator is arranged.
  • the object of the invention is to provide a venting method that the Runner of a centrifugal pump freed from the accumulated air there.
  • This object is achieved in that to free the Impeller and / or the space surrounding the impeller of air, the Pump speed of the normal speed in particular for a short time on such a low speed is controlled, that the air separates from the impeller and exits the impeller space.
  • the inventive method is preferably for smaller pumps, the means used for pumps with a power of 0.001 to 40W.
  • these Pumps of smaller design and lower flow rate can become air in the Rotor space of the pump accumulate, because this air from the impeller is whirled around and thereby the promotion significantly sinks or even completely breaks off. This is especially common when using such smaller pumps in the water cycle of heating systems or hot water generating Boilers are used.
  • the pumped water always contains larger quantities in air, which gets caught in the impeller and in the space around the impeller and from the Impeller is swirled without leaving the impeller space.
  • the speed of the normal speed is short-term down to a lower speed, so the air from the Disconnect the impeller and exit the impeller chamber and thus to the automatic ventilation device in the upper area of the pump housing to escape to the atmosphere there. But it can be done instead the air after reaching a higher speed again, in particular the Normal speed, are brought out with the flow from the pump.
  • normal speed is meant the pump speed with which the Pump is currently driven before the down control. The normal speed is thus in the speed range in which the pump during the Promotion is driven.
  • the Pump speed is shut down only once, then again immediately afterwards to be driven up.
  • a particularly safe ventilation is then achieved when the pump speed several times in succession from the normal speed a lower speed is controlled down, that is, it takes place multiple alternation of normal speed and lower speed. in this connection the lower speed is 5 to 50% of the maximum speed.
  • the pump can also be switched off completely for a short time and especially in a momentary change of switching on and off.
  • the Off times are 0.5 to 15 seconds and the intervening Switch-on times 1 to 15 seconds.
  • a one-time shutdown especially a single shutdown, sufficient to air the impeller and in particular the impeller space to free.
  • the pump is shut down several times or switched off, especially 2 to 50 times.
  • the pump controller has a detection device of air quantities in Impeller chamber.
  • the pump control After this has detected the pump control, it drives the speed of the pump automatically down after the above procedure and after the one-off or repeated shutdown and startup or standstill is the Normal operation resumed.

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)
EP05003976.7A 2004-05-04 2005-02-24 Méthode pour la désaération de pompes centrifuges Active EP1593851B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410021988 DE102004021988A1 (de) 2004-05-04 2004-05-04 Verfahren zum Entlüften einer Kreiselpumpe
DE102004021988 2004-05-04

Publications (3)

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

Family

ID=34933909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05003976.7A Active EP1593851B1 (fr) 2004-05-04 2005-02-24 Méthode pour la désaération de pompes centrifuges

Country Status (2)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016016212A1 (fr) * 2014-07-31 2016-02-04 Xylem Ip Management Sàrl Procédé de mise en œuvre de système de distribution de fluide et pompe de distribution

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20240102478A1 (en) * 2022-09-22 2024-03-28 Grundfos Holding A/S Air venting

Citations (2)

* 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
EP0964158A2 (fr) 1998-06-12 1999-12-15 Linde Aktiengesellschaft Procédé d'opération d'une pompe pour refrigérants

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520538A1 (de) * 1985-06-07 1986-12-11 Kraftwerk Union AG, 4330 Mülheim Verfahren und einrichtung zum betrieb einer kreiselpumpe
DE4422297C1 (de) * 1994-06-25 1995-08-31 Viessmann Werke Kg Steuerung von Umwälzpumpen
DE10145410A1 (de) * 2001-09-14 2003-04-03 Wilo Gmbh Pumpe im Ventilgehäuse

Patent Citations (2)

* 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
EP0964158A2 (fr) 1998-06-12 1999-12-15 Linde Aktiengesellschaft Procédé d'opération d'une pompe pour refrigérants

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016016212A1 (fr) * 2014-07-31 2016-02-04 Xylem Ip Management Sàrl Procédé de mise en œuvre de système de distribution de fluide et pompe de distribution

Also Published As

Publication number Publication date
EP1593851A3 (fr) 2010-12-29
DE102004021988A1 (de) 2005-11-24
EP1593851B1 (fr) 2016-11-16

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