Electric heating – Metal heating – Of cylinders
Patent
1984-03-12
1985-08-06
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1055B, 99325, 426243, H05B 668
Patent
active
045338094
ABSTRACT:
A microwave oven delivers microwave power to the oven cavity simultaneously with thermal power provided by a circulation of hot air forced through the cavity by a fan. A temperature sensor in the cavity and timing means monitor the temperature/time variation. If a predetermined maximum temperature (e.g. 250.degree. C.) is reached in the cavity in a predetermined time (e.g. 30 minutes) from commencement of cooking with the oven in a cold condition, the oven automatically switches off to finish the cooking process. Most food items other than large meat or casserole dishes will be cooked within the predetermined time by this method. For larger meat and casserole dishes, where the maximum temperature is reached after the predetermined time, the delivery of microwave power is increased and the delivery of thermal power decreased when the maximum temperature is reached in order to complete cooking of these denser food items.
REFERENCES:
patent: 3514576 (1970-05-01), Hilton et al.
patent: 3569656 (1971-03-01), White et al.
patent: 4230731 (1980-10-01), Tyler
patent: 4236055 (1980-11-01), Kaminaka
patent: 4332992 (1982-06-01), Larsen et al.
patent: 4350860 (1982-09-01), Ueda
patent: 4401884 (1983-08-01), Kusunoki et al.
Albright Penrose Lucas
Leung Philip H.
Microwave Ovens Limited
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