Damper drive in microwave heating appliance

Details Damper drive in microwave heating appliance Damper drive in microwave heating appliance

1987-02-17

1987-11-10

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055R, 219400, 126285R, 126 21A, 236 1G, H05B 664

Patent

active

047059281

ABSTRACT:
A heating appliance such as a hot-air circulating microwave oven using a shape memory alloy as the damper spring for driving the damper unit. The damper lid a capable of switching the direction of air to be supplied into the heating chamber and the damper spring, made of shape memory alloy drives the damper lid in the air path inside a duct, delivering air cooled by a cooling fan to both the heating chamber and a magnetron.

REFERENCES:
patent: 4131779 (1979-12-01), Tatsukawa et al.
patent: 4283006 (1981-08-01), Fedewitz
patent: 4284235 (1981-08-01), Diermayer et al.
patent: 4369347 (1983-01-01), Shin
patent: 4450344 (1984-05-01), Sakoda et al.

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