Microwave ovens and methods of cooking food

Details Microwave ovens and methods of cooking food Microwave ovens and methods of cooking food

1988-07-05

1988-12-27

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055B, 99325, 426243, H05B 668

Patent

active

047942193

ABSTRACT:
A microwave oven having a cavity for receiving a food item to be cooked, a magnetron for delivering microwave power to the cavity, and a forced hot air system including a fan and an electrical resistance heating element which are disposed in a compartment separated from the cavity by a dividing panel. The oven has a thermistor for monitoring the variation of hot air temperature over time and for determining the particular time at which the hot air temperature reaches a predetermined value. When the hot air temperature reaches the predetermined value, a microprocessor: (1) determines the remaining cooking time to complete cooking by referring to an internal program that relates the time of measurement with total cooking time, and (2) determines a maximum hot air temperature to be maintained from the time of measurement to the end of cooking by reference to a second internal program which relates the values of the time of measurement with the maximum desirable hot air temperature.

REFERENCES:
patent: 4379964 (1983-04-01), Kanazawa et al.
patent: 4447693 (1984-05-01), Buck
patent: 4481394 (1984-11-01), Tanabe
patent: 4488026 (1984-12-01), Tanabe
patent: 4499357 (1985-02-01), Kojima
patent: 4533809 (1985-08-01), Eke
patent: 4584448 (1986-04-01), Tanabe
patent: 4661670 (1987-04-01), Eke

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