Automatic thawing device of microwave oven and control method th

Details Automatic thawing device of microwave oven and control method th Automatic thawing device of microwave oven and control method th

1994-01-04

1995-07-25

Leung, Philip H.

Electric heating

Microwave heating

With control system

219707, 99325, 426243, H05B 668

Patent

active

054364337

ABSTRACT:
An automatic thawing device of a microwave oven and a method for control thereof. A turntable is rotatably placed in a cooking chamber. A gas sensor is placed about an exhaust port of the oven and senses amount of gas or vapor exhausted from the cooking chamber through the exhaust port during a thawing operation, and outputs a gas amount signal to a microprocessor. The microprocessor calculates a thawing time by operation of the output signal of the gas sensor an outputting a thawing control signal for driving the microwave oven. An output drive unit controls output level of electromagnetic wave of high frequency of a magnetron in accordance with the thawing control signal of the microprocessor. The magnetron generates the electromagnetic wave of high frequency in accordance with output signal of the drive unit for the thawing time. A power source supplies an electric power to the thawing device in accordance with the thawing control signal of the microprocessor.

REFERENCES:
patent: 4255639 (1981-03-01), Kawabata et al.
patent: 4453066 (1984-06-01), Moki
patent: 4599503 (1986-07-01), Ueda
patent: 4841111 (1989-06-01), Kokkeler et al.
patent: 4874914 (1989-10-01), Eke
patent: 4998001 (1991-03-01), Cigarini et al.

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