Electric heating – Metal heating – Of cylinders
Patent
1988-12-21
1990-02-06
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1055B, 99325, H05B 668
Patent
active
048990264
ABSTRACT:
An automatic cooking control system for a microwave oven which utilizes an initial operation process that shifts a temperature of inflow air stored in memories to other memories and repeatedly stores a present inflow air temperature in another memory until the present detected inflow air temperature is equal to the temperature stored in the memory. This initial process also determines a temperature variation in the inflow air and a temperature difference between the air flowing in and out. A temperature compensating portion is obtained from the temperature variation and difference, which is used to establish a temperature increment by dividing the temperature compensating portion into a predetermined temperature increment. The microwave oven then utilizes a first stage heating process until the temprature of the air flowing from a heating chamber is raised as much as the compensated temperature increment. When this condition is realized, a second stage heating process is carried out for the time of the first stage heating time multiplied by a predetermined value according to the kind of food being cooked.
REFERENCES:
patent: 4115678 (1978-09-01), Tachikawa et al.
patent: 4162381 (1979-07-01), Buck
patent: 4812606 (1989-03-01), Eke
patent: 4831227 (1989-05-01), Eke
Goldstar Co. Ltd.
Leung Philip H.
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