Electronically controlled cooking apparatus for controlling heat

Details Electronically controlled cooking apparatus for controlling heat Electronically controlled cooking apparatus for controlling heat

1988-06-24

1989-09-05

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055M, 219492, 99325, H05B 668

Patent

active

048640883

ABSTRACT:
A microwave oven mainly comprises a heating chamber (3) where food (2) is placed, a magnetron (8) for supplying microwaves to the heating chamber, a humidity sensor (11) for detecting an absolute humidity in the heating chamber, and a microcomputer (12) for controlling operation of the magnetron. The microcomputer (12) determines whether the food is covered with clear-plastic wrap or not, based on a humidity change rate at an early stage of heating. Further, the microcomputer determines the quantity of the food based on the detection of a humidity change rate at a later stage. The microcomputer determines a heating pattern suited for the state of the food, based on the two determinations.

REFERENCES:
patent: 3839616 (1974-10-01), Risman
patent: 4379964 (1983-04-01), Kanazawa et al.
patent: 4484065 (1984-11-01), Ueda
patent: 4488026 (1984-12-01), Tanabe
patent: 4591684 (1986-05-01), Tanabe et al.
patent: 4734554 (1988-03-01), Tateda et al.

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