H - Electricity – 05 – B
Patent
H - Electricity
05
B
327/2.5
H05B 6/68 (2006.01)
Patent
CA 1307561
ABSTRACT OF THE DISCLOSURE An automatic looking control system for a microwave oven comprising an initial operation process which makes an air temperature of a heating chamber balanced by operating only a fan. A first stage heating operation process which comprises of actuating a magnetron since the initial operation process, detecting an outflow air temperature and storing it as a present temperature, obtaining an arithmetical mean of the present temperature and the previous temperature detected prior to a half rotational period of a turntable, and executing a first stage heating until the arithmetical mean is raised as much as a predetermined value established according to the kind of food. In a second stage heating operation process is carried out for a time which is obtained by multiplied the first stage heat- ing time by a predetermined value established by the kind of food. Thereby, it is possible to automatically cook a food by correctly establishing the heating time even though the outflow air temperature detected at a temperature sensor is oscillated by the rotation of the turntable.
586705
Fetherstonhaugh & Co.
Goldstar Co. Ltd.
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