EP 3293397 B1 20181024 - CENTRIFUGAL PUMP AND METHOD FOR VENTING
Title (en)
CENTRIFUGAL PUMP AND METHOD FOR VENTING
Title (de)
KREISELPUMPENAGGREGAT UND VERFAHREN ZUM ENTLÜFTEN
Title (fr)
POMPE CENTRIFUGE ET PROCÉDÉ DE PURGE D'AIR
Publication
Application
Priority
EP 16188626 A 20160913
Abstract (en)
[origin: US2018073509A1] A centrifugal pump assembly (2) includes an impeller, an electric drive motor (4), driving the impeller (12), and a back-flow channel (24), forming a flow connection from a delivery side (18) to a suction side (16). A valve (26), in a pressure-dependent manner, closes the flow connection. A control device (28) adjusts/sets the speed (n) of the drive motor (4), and is configured with a venting function for venting the centrifugal pump assembly (2) on operation. According to the venting function, after the detection of an air accumulation, the speed (n) of the drive motor (4) is automatically reduced, and subsequently the speed (n) is rapidly increased again. A method is also provided for removing an air accumulation from a centrifugal pump assembly during operation, which method includes reducing the speed (n) of the centrifugal pump assembly and subsequently rapidly increasing the speed (n) of the centrifugal pump again.
IPC 8 full level
F04D 1/00 (2006.01); F04D 1/06 (2006.01); F04D 9/00 (2006.01); F04D 13/06 (2006.01); F04D 13/16 (2006.01); F04D 15/00 (2006.01)
CPC (source: CN EP RU US)
F04D 1/00 (2013.01 - EP); F04D 1/06 (2013.01 - EP); F04D 9/001 (2013.01 - EP); F04D 9/003 (2013.01 - RU); F04D 9/005 (2013.01 - EP); F04D 9/006 (2013.01 - CN EP); F04D 9/02 (2013.01 - RU US); F04D 13/06 (2013.01 - EP); F04D 13/0686 (2013.01 - RU); F04D 13/16 (2013.01 - EP); F04D 15/0005 (2013.01 - CN EP); F04D 15/0011 (2013.01 - US); F04D 15/0066 (2013.01 - CN EP RU US); F04D 15/0281 (2013.01 - CN); F04D 27/009 (2013.01 - US); F04D 27/0215 (2013.01 - US); F04D 27/0261 (2013.01 - US); F04D 1/06 (2013.01 - CN US); F04D 9/001 (2013.01 - US); F04D 9/005 (2013.01 - US); F04D 9/006 (2013.01 - US); F04D 13/06 (2013.01 - US); F04D 29/426 (2013.01 - CN)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3293397 A1 20180314; EP 3293397 B1 20181024; AU 2017213444 A1 20180329; AU 2017213444 B2 20190117; CN 107816437 A 20180320; CN 107816437 B 20191018; RU 2681112 C1 20190304; TW 201825787 A 20180716; TW I661130 B 20190601; US 10619640 B2 20200414; US 2018073509 A1 20180315
DOCDB simple family (application)
EP 16188626 A 20160913; AU 2017213444 A 20170808; CN 201710822421 A 20170913; RU 2017131864 A 20170912; TW 106130288 A 20170905; US 201715700666 A 20170911