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1. (WO2018159471) PUMP DEVICE

Pub. No.:    WO/2018/159471    International Application No.:    PCT/JP2018/006608
Publication Date: Sat Sep 08 01:59:59 CEST 2018 International Filing Date: Sat Feb 24 00:59:59 CET 2018
IPC: H02K 9/19
B62D 5/07
F04C 2/10
F04C 15/00
F04C 15/06
H02K 7/14
H02K 11/33
Inventors: KOBAYASHI Yoshiyuki
小林 喜幸
HOMMA Kazuhiro
本間 和博
樋口 孔二
ITO Yosuke
伊東 陽介
This pump device 1 comprises a motor unit 10 having a shaft 5 arranged along a central axis J extending in the axial direction, a pump unit 30 which is positioned to one side in the axial direction of the motor unit 10 and which is driven by the motor unit 10 through the shaft 5 and discharges oil, and an inverter circuit 50 which is positioned radially outwards of the motor unit 10. The motor unit 10 comprises a rotor 11 which can rotate around the shaft 5, a stator 15 which is arranged opposite of the rotor 11, and a housing 21 which houses the rotor 11 and the stator 15. The housing 21 has a heat sink 60 on the outside surface, the heat sink 60 has a first flow path 61 that passes oil pumped from the pump unit 30, and the inverter circuit 50 is in thermal contact with the heat sink 60.