PHASE CHANGE HEAT SINK FOR USE IN ELECTRICAL SOLENOIDS AND MOTORS

Title:

PHASE CHANGE HEAT SINK FOR USE IN ELECTRICAL SOLENOIDS AND MOTORS

Document Type and Number:

WIPO Patent Application WO2003090254

Kind Code:

A3

Abstract:

A method, and a system for reducing the internal temperature of an electrical solenoid or motor device involves placing a heat absorbing phase change material (PCM) in intimate contact with the device to reduce the internal temperature of the device. The PCM material reduces the internal operational temperature of the device by undergoing an endothermic phase transition in an operating temperature range of the device. The PCM material transitions between a solid phase and a liquid phase in the internal operational temperature range of the device, or between a liquid phase and a gaseous phase in the internal operational temperature range of the device. The PCM material can be affixed externally to the device. For example, the PCM material is affixed in the form of externally placed pads to the device. The PCM material can also be affixed inside of the device. For example, the PCM material is placed in a potted position around and inside of coil windings of the device, or within an outer structure of the device.

More Like This:

JP3806303	COOLING STRUCTURE OF POWER GENERATOR
WO/2010/119281	ELECTRIC MACHINE - EVAPORATIVE COOLING
JPS5932339	ROTARY ELECTRIC MACHINE WITH HEAT PIPE

Inventors:

TOBIAS LEE (US)

Application Number:

PCT/US2003/012059

Publication Date:

February 26, 2004

Filing Date:

April 17, 2003

Export Citation:

Click for automatic bibliography generation Help

Assignee:

LOCKHEED CORP (US)
TOBIAS LEE (US)

International Classes:

H02K9/20; H02K9/22; H01F5/00; (IPC1-7): F25B21/00

Foreign References:

US5699668A	1997-12-23
US4366857A	1983-01-04
US4396055A	1983-08-02
SU1490416A1	1989-06-30

Other References: