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Title:
DAMPER OPERATING DEVICE
Document Type and Number:
Japanese Patent JPH01225881
Kind Code:
A
Abstract:

PURPOSE: To improve the full closure response characteristic of a damper plate by quickly cooling a heater by disposing a hole in the piston pin and cover of a damper operating device.

CONSTITUTION: A cover 10 which protects a drive element 8 comprising a shape memory alloy as a power source for a damper plate 5 of a damper operating device 1 as well as said power source from cold air is installed on the rear of a baking plate 2. Holes 21, 22 disposed respectively in the cover 10 and a piston pin 14 for cold air circulation are so arranged that they are aligned straight when the drive element 8 moves linearly to open the damper plate 5. The moment the electrical supply to a header 9 is interrupted, cold air quickly enters through the holes 21, 22 to quickly cools the heater 9 and the drive element 8. Since the drive element is restituted quickly, the full closure response characteristic of the damper plate can be improved.


Inventors:
YAMAMOTO HIDEKI
Application Number:
JP1988000051941
Publication Date:
September 08, 1989
Filing Date:
March 04, 1988
Export Citation:
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Assignee:
MATSUSHITA REFRIGERATION
International Classes:
F25D17/08; (IPC1-7): F25D17/08



 
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