Combined microwave and electric heating oven selectively control

Details Combined microwave and electric heating oven selectively control Combined microwave and electric heating oven selectively control

1982-03-17

1984-07-31

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

219 1055R, H05B 668

Patent

active

044632380

ABSTRACT:
A combined microwave and electric heating oven includes a magnetron for microwave cooking purposes, and a heater for electric heating cooking purposes. A gas sensor is disposed in an exhaustion duct for detecting concentration of a gas developed from an oven cavity, and a thermistor is secured to an oven wall for detecting an air temperature within the oven cavity. A programmed automatic cooking control system is provided for first activating the magnetron. When the gas sensor output reaches a preselected value, the magnetron energization is terminated and, then, the heater is energized. Power supply to the heater is controlled in response to an output signal derived from the thermistor.

REFERENCES:
patent: 3195013 (1965-07-01), Thal, Jr.
patent: 3281568 (1966-10-01), Haagensen
patent: 3569656 (1971-03-01), White et al.
patent: 4097707 (1978-06-01), Kobayashi et al.
patent: 4133995 (1979-01-01), Buck
patent: 4162381 (1979-07-01), Buck
patent: 4308444 (1981-12-01), Takagi et al.
patent: 4324966 (1982-04-01), Tanabe

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