Heating apparatus with humidity sensor

Details Heating apparatus with humidity sensor Heating apparatus with humidity sensor

H - Electricity

05

B

340/139, 341/32.

H05B 6/68 (2006.01)

Patent

CA 1253592

ABSTRACT OF THE DISCLOSURE A heating apparatus, e.g. a microwave oven, contains a humidity sensor for detecting vapor amount generating from the heated object and a control unit for controlling the heating time on the basis of the signal output from the humidity sensor. The humidity sensor comprises a first heat sensor for detecting the atmospheric temperature and a second heat sensor which is self-heated or heated by a heating source. The control unit comprises a comparator for comparing the temperature change of the first heat sensor with that of the second heat sensor which change is caused by vapor generating from the heated object, and a control circuit for controlling the additional heating time on the basis of the time the signal output from the comparator took to reach the value preset for each kind of heated objects, when the preset value is reached.

501589

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