Electric heating – Microwave heating – With diverse-type heating
Patent
1996-09-26
1998-08-25
Leung, Philip H.
Electric heating
Microwave heating
With diverse-type heating
219757, 219400, 126 21A, H05B 680, F24C 102
Patent
active
057985057
ABSTRACT:
A microwave oven has a cooking chamber in which an electric heater is provided to perform convection cooking as an alternative to high frequency cooking. Heat from the heater is circulated within the cooking chamber by a heat-circulation fan situated behind an apertured back wall of the cooking chamber. A cooking chamber disposed behind the heater houses a motor for driving the heat circulation fan and also for driving a cooling fan disposed in the cooling chamber. The cooling fan draws in cooling air through cool air apertures formed in the rear of the oven. Hot exhaust air from the cooking chamber is discharged through exhaust holes formed in the rear of the oven, next to the cool air apertures. In order to minimize the travel of hot exhaust air from the exhaust holes to the cool air apertures a guide duct mounted on the rear of the oven directs the exhaust air from the exhaust holes upwardly to a discharge outlet at the top of the duct.
REFERENCES:
patent: 4332992 (1982-06-01), Larsen et al.
patent: 4392038 (1983-07-01), Day et al.
patent: 4940869 (1990-07-01), Scholtes et al.
patent: 5477036 (1995-12-01), Jun et al.
Leung Philip H.
Samsung Electronics Co,. Ltd.
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