Abnormal temperature detection and microwave generation suppress

Details Abnormal temperature detection and microwave generation suppress Abnormal temperature detection and microwave generation suppress

1978-05-31

1980-09-09

Grimley, Arthur T.

Electric heating

Metal heating

Of cylinders

219 1055R, 219 1055B, H05B 906

Patent

active

042219493

ABSTRACT:
A hot air exhaustion opening is formed in an oven wall of a microwave oven. A heat-sensitive film is disposed at the hot air exhaustion opening to close the hot air exhaustion opening when the microwave oven is in the normal operation mode. When the oven cavity temperature rises to an abnormal value, the heat-sensitive film is fused to conduct hot air toward the outside of the microwave oven cavity through the hot air exhaustion opening. A heat-sensitive fuse is disposed on the downstream side of the heat-sensitive filter film so that the heat-sensitive fuse receives the hot air exhausted through the hot air exhaustion opening when the heat-sensitive film is fused. The heat-sensitive fuse is associated with a microwave generation control circuit so that the microwave generation is suppressed when the oven cavity temperature rises to the abnormal value.

REFERENCES:
patent: Re28822 (1976-05-01), Fritts
patent: 3875361 (1975-04-01), Fukui et al.
patent: 4131779 (1978-12-01), Tatsukawa et al.
patent: 4132878 (1979-01-01), Tachikawa et al.

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