Automatic cooking control system for a microwave oven

Details Automatic cooking control system for a microwave oven Automatic cooking control system for a microwave oven

1988-12-21

1990-04-17

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055B, 99325, H05B 668

Patent

active

049182765

ABSTRACT:
An automatic cooking control system for a microwave oven having a turntable utilizes an initial operation process which makes the air temperature of a heating chamber by uniformed only operating a fan. The automatic cooking control system further utilizes first stage heating operation process which actuates a magnetron after the initial operation process. The first stage process detects, an outflow air temperature, stores it as a present temperature, and obtains an arithmetical mean of the present temperature and a previous temperature detected prior to a half rotational period of the turntable. The first stage heating operation process is carried out until the arithmetical mean is raised as much as a predetermined value established according to the kind of food being cooked. The system also utilizes a second stage heating operation process which is carried out for a time period that is obtained by multiplying the first stage heating time by a predetermined value established by the kind of food being cooked. This system can automatically cook food with the correct heating time even though the outflow air temperature detected by a temperature sensor oscillates due to the rotation of the turntable.

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

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