H - Electricity – 05 – B
Patent
H - Electricity
05
B
99/2, 327/1.7
H05B 6/68 (2006.01) H05B 6/80 (2006.01)
Patent
CA 1273405
- 15 - C360.1/M ABSTRACT Title: Microwave Ovens and Methods of Cooking Food A microwave oven has a cavity (10) 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 (36) and an electrical resistance heating element (38) which are disposed in a compartment (34) separated from the cavity by a dividing panel (20). The oven has a thermistor (40) for monitoring the variation of hot air temperature with time and determining the particular time at which the hot air temperature reaches a predetermined value, and means at said particular time for: 1) determining the remaining cooking time, beyond said particular time to the end of cooking, by reference to a first pre-set characteristic (Figure 5) relating the values of said particular time with the values of total cooking time, and 2) determining a maximum hot air temperature for thermostatically controlling the hot air temperature from the particular time to the end of cooking, by reference to a second pre-set characteristic (Figure 6) relating the values of said predetermined time with the maximum hot air temperature.
532464
Kirby Eades Gale Baker
Microwave Ovens Limited
LandOfFree
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