Title:
MOTOR COOLING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/132305
Kind Code:
A1
Abstract:
The disclosed motor cooling device facilitates heat transfer between a coil end and a coil end cover, thereby maintaining good motor cooling performance, even when an oil flow volume is low. Said motor cooling device is provided with: a coil end cover (15) that covers a coil end (12) of a stator (11) and is configured such that oil flows around the coil end (12), removing heat from the stator (11); a channel (16) formed between the outer surface of the coil end (12) and the inner surface of the coil end cover (15); and a flow-velocity adjustment means (17) that changes the cross-sectional area of the channel (16) by moving the coil end cover (15) towards or away from the coil end (12). The flow-velocity adjustment means (17) increases the cross-sectional area of the channel (16) when the amount of oil supplied to the channel (16) is relatively large and decreases the cross-sectional area of the channel (16) when the amount of oil supplied to the channel (16) is relatively small.
Inventors:
DEGUCHI JUN-ICHI (JP)
ARAKAWA KAZUYA (JP)
YOSHIZUE KENSUKE (JP)
ARAKAWA KAZUYA (JP)
YOSHIZUE KENSUKE (JP)
Application Number:
PCT/JP2010/057214
Publication Date:
October 27, 2011
Filing Date:
April 23, 2010
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD (JP)
DEGUCHI JUN-ICHI (JP)
ARAKAWA KAZUYA (JP)
YOSHIZUE KENSUKE (JP)
DEGUCHI JUN-ICHI (JP)
ARAKAWA KAZUYA (JP)
YOSHIZUE KENSUKE (JP)
International Classes:
H02K9/19
Domestic Patent References:
| WO2004019468A1 | 2004-03-04 |
Foreign References:
| JP2005323416A | 2005-11-17 | |||
| JP2006288143A | 2006-10-19 | |||
| JP2005354822A | 2005-12-22 | |||
| JP2007228669A | 2007-09-06 |
Attorney, Agent or Firm:
WATANABE, TAKEO (JP)
Takeo Watanabe (JP)
Takeo Watanabe (JP)
Download PDF:
Claims:
Previous Patent: CONTROL DEVICE FOR DRIVE MOTORS
Next Patent: METHOD FOR PRODUCING A HYDROCARBON MIXED REFRIGERANT
Next Patent: METHOD FOR PRODUCING A HYDROCARBON MIXED REFRIGERANT