Timing control device for a microwave oven

Details Timing control device for a microwave oven Timing control device for a microwave oven

1987-11-03

1988-11-15

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055M, 219506, 99325, H05B 668

Patent

active

047851520

ABSTRACT:
A microwave oven comprising a power supply, a heating chamber having a door, a detector for detecting the opening and closing of the door, a high-frequency heater for heating the article to be heated, a plurality of setting keys for setting heating time, a timer for driving the heater for a specified period of time, a starter for initiating the timer into operation after a predetermined period of time beginning after the depression of the setting key, a stopper for temporarily preventing the operation of the timer when the cooking is interrupted by opening of the door, and a control unit for driving the timer again when the cooking operation is resumed on closing the door. The setting key functions also as a start key, and when the door is opened and closed during cooking, the article can be heated only for the rest of the heating time by depressing the original setting key. The heating time can also be adjustable to a new heating time.

REFERENCES:
patent: 4317977 (1982-03-01), Buck
patent: 4425490 (1984-01-01), Takeda et al.
patent: 4459449 (1984-07-01), Hirata
patent: 4568810 (1986-02-01), Carmean

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