Microwave ovens and methods of cooking food

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

1988-02-29

1989-05-16

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055B, 219400, 99325, H05B 668

Patent

active

048312274

ABSTRACT:
A microwave oven has a magnetron for delivering microwave power to the oven cavity, and a fan (36) and electrical resistance heating element (38) for recirculating hot air through the cavity. The oven cooks cakes by subjecting the cakes to a first cooking stage during which hot air but no microwave power is produced, and a second cooking stage during which microwave power is produced but the electrical resistance heating element (38) is not energized, and a third cooking stage during which hot air power is applied and microwave power is produced for a certain proportion of the third cooking stage. The transitions between the stages are determined by the recirculated air temperature as detected by a thermocouple (40) positioned to detect the temperature of the air as the latter leaves the oven cavity.

REFERENCES:
patent: 3569656 (1971-03-01), White et al.
patent: 4332992 (1982-06-01), Larsen et al.
patent: 4454404 (1984-06-01), Zushi
patent: 4508947 (1985-04-01), Eke
patent: 4533809 (1985-08-01), Eke

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