H - Electricity – 05 – B
Patent
H - Electricity
05
B
327/2.4, 327/1.7
H05B 6/64 (2006.01) F24C 15/02 (2006.01) F24C 15/32 (2006.01) G05D 23/02 (2006.01) H05B 6/80 (2006.01)
Patent
CA 1213002
ABSTRACT OF THE DISCLOSURE A heating appliance such as a hot-air circula- ting microwave oven has a shape memory alloy as a damper spring for operating a damper controlling the supply of air into a heating chamber. The damper spring is dis- posed in an air path inside a duct for delivering air from a cooling fan to both the heating chamber and a magnetron, so that the damper spring is also cooled.
447279
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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