Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1993-08-17
1994-11-22
Leung, Philip H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219710, 219705, 219719, 99325, H05B 668
Patent
active
053671457
ABSTRACT:
A heating apparatus such as microwave ovens includes a heater heating food contained in a cooking chamber and a temperature sensor sensing the temperature in the cooking chamber. An initial temperature is detected at an initial stage of the cooking on the basis of the temperature sensed by the temperature sensor. An intermediate temperature is further detected a predetermined time period after the start of the cooking. Based on the difference between the detected initial and intermediate temperatures, a suitable cooking period of time is determined.
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patent: 4927998 (1990-05-01), Tamura et al.
patent: 4970359 (1990-11-01), Oh
Kabushi Kaisha Toshiba
Leung Philip H.
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