High-frequency heating apparatus

Electric heating – Metal heating – Of cylinders

Patent

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Details

126193, H05B 906

Patent

active

041317793

ABSTRACT:
The present invention involves a high-frequency heating apparatus of the type which comprises a heating chamber for accommodating an object to be heated, a door openably and closably provided for an opening of the heating chamber, a high-frequency energy generator for supplying high-frequency energy to the interior of the heating chamber, a fan for forcibly ventilating the interior of the heating chamber, and a heating chamber air-outlet cooperative with the fan to effect the forcible ventilation for the interior of the heating chamber. Temperature of air flowing out of heating chamber through the heating chamber air-outlet is detected by a temperature sensor to actuate an automatic heating control unit for controlling the supply of high-frequency energy. The apparatus is also provided with a manual heating control unit for manually controlling the heating time. In response to a selective operation of one of the automatic heating control unit and the manual heating control unit, an air flow path changer is actuated to change a part of the flow path of the air for ventilating the interior of the heating chamber.

REFERENCES:
patent: 3470942 (1969-10-01), Fukada et al.
patent: 3681557 (1972-08-01), Suzuki et al.
patent: 3783219 (1974-01-01), Tateda
patent: 4028520 (1977-06-01), Torrey

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