EP 1477683 B1 20120125 - Canned motor pump
Title (en)
Canned motor pump
Title (de)
Spaltrohrmotorpumpe
Title (fr)
Pompe avec moteur électrique à rotor noyé
Publication
Application
Priority
DE 10322464 A 20030516
Abstract (en)
[origin: EP1477683A2] The centrifugal pump (1) has a rotor (7) with curved blades, an axial inlet and a tangential outlet (18). There are additional narrow blades (17) on the flat back of the pump rotor to fling fluid away from the pump and motor (2) bearing (10). This bearing is a ceramic friction bearing with a pair of thrust bearings (11,12). There is a bearing ring (13) in contact with the motor shaft (6). The cooling system has a heat exchanger (3) with a pipe (5) feeding fluid into a central bore in the motor shaft. Fluid may circulate through the bearing and an impeller pump (14) on the bearing returns cooling fluid through a pipe (4) to the heat exchanger. A labyrinth seal and a slinger ring (19) prevent ingress of solid particles into the bearing and motor.
IPC 8 full level
F04D 13/06 (2006.01); F04D 29/58 (2006.01)
CPC (source: EP)
F04D 13/0613 (2013.01); F04D 29/588 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1477683 A2 20041117; EP 1477683 A3 20090527; EP 1477683 B1 20120125; AT E543003 T1 20120215; DE 10322464 A1 20041202; DE 10322464 A8 20050428; DE 10322464 B4 20120503; DK 1477683 T3 20120507; ES 2380820 T3 20120518; PL 1477683 T3 20120731; PT 1477683 E 20120427; SI 1477683 T1 20120531
DOCDB simple family (application)
EP 04008290 A 20040406; AT 04008290 T 20040406; DE 10322464 A 20030516; DK 04008290 T 20040406; ES 04008290 T 20040406; PL 04008290 T 20040406; PT 04008290 T 20040406; SI 200431847 T 20040406