EP 2138723 B1 20170913 - Centrifugal pump with free flow wheel
Title (en)
Centrifugal pump with free flow wheel
Title (de)
Kreiselpumpe mit Freistromlaufrad
Title (fr)
Pompe centrifuge dotée d'un rotor de courant libre
Publication
Application
Priority
DE 102008030112 A 20080627
Abstract (en)
[origin: EP2138723A2] The pump (1) has a free-flow impeller (3) rotatably arranged in a housing (2). A blade-less space (7) is arranged between a suction-side housing wall (6) and the impeller. An avoidance unit is provided for avoidance of separation of a flow. A single or multi-part flow influencing unit (10) is arranged at the suction-side housing and projects into the blade-less space. The flow influencing unit is provided with tearing units in the form of sharp edges and/or hardened edges. The housing wall and the influencing unit are formed as a component part of a housing cover (11).
IPC 8 full level
F04D 1/00 (2006.01); F04D 7/04 (2006.01); F04D 29/22 (2006.01); F04D 29/68 (2006.01)
CPC (source: EP)
F04D 1/00 (2013.01); F04D 7/045 (2013.01); F04D 29/2244 (2013.01); F04D 29/688 (2013.01)
Designated contracting state (EPC)
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 SE SI SK TR
DOCDB simple family (publication)
EP 2138723 A2 20091230; EP 2138723 A3 20100728; EP 2138723 B1 20170913; CN 101614209 A 20091230; CN 101614209 B 20141210; DE 102008030112 A1 20091231
DOCDB simple family (application)
EP 09007443 A 20090605; CN 200910158420 A 20090626; DE 102008030112 A 20080627