EP 2059996 A4 20120627 - ARRANGEMENT FOR COOLING AN ELECTRICAL MACHINE
Title (en)
ARRANGEMENT FOR COOLING AN ELECTRICAL MACHINE
Title (de)
ANORDNUNG ZUR KÜHLUNG EINER ELEKTRISCHEN MASCHINE
Title (fr)
SYSTEME DE REFROIDISSEMENT D'APPAREIL ELECTRIQUE
Publication
Application
Priority
- FI 2007000226 W 20070907
- FI 20060800 A 20060907
Abstract (en)
[origin: WO2008028996A1] The object of the invention is a cooling arrangement for an electrical machine in which a main magnetic field affects the stator and the rotor. In the arrangement, an auxiliary rotor (16, 16') is fitted onto the same shaft (8) with the rotor (6) of the machine and arranged to rotate in relation to the stator (4) and drive shaft (8) of the electrical machine. The number of poles in the auxiliary rotor (16, 16') is substantially smaller than the number of poles in the electrical machine, and a subharmonic magnetic field induced on the stator (6) of the electrical machine is arranged to rotate the auxiliary rotor (16, 16') and a fan (20) arranged to it.
IPC 8 full level
H02K 9/04 (2006.01); H02K 16/02 (2006.01)
CPC (source: EP FI)
H02K 9/04 (2013.01 - EP FI); H02K 16/00 (2013.01 - EP); H02K 16/02 (2013.01 - EP); H02K 2213/09 (2013.01 - EP)
Citation (search report)
- [A] GB 948013 A 19640129 - SIEMENS AG
- [A] EP 1087501 A2 20010328 - NISSAN MOTOR [JP]
- [A] WO 9939426 A1 19990805 - SCHROEDL MANFRED [AT]
- [A] JP S55173276 U 19801212
- See references of WO 2008028996A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2008028996 A1 20080313; EP 2059996 A1 20090520; EP 2059996 A4 20120627; FI 119458 B 20081114; FI 20060800 A0 20060907; FI 20060800 A 20080308
DOCDB simple family (application)
FI 2007000226 W 20070907; EP 07823087 A 20070907; FI 20060800 A 20060907