Cooling system for cooling electrical parts for microwave oven

Details Cooling system for cooling electrical parts for microwave oven Cooling system for cooling electrical parts for microwave oven

1982-12-20

1989-03-14

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055B, 219400, 126198, H05B 680

Patent

active

048126179

ABSTRACT:
A microwave oven comprises a screen plate covering a high voltage transformer positioned on the bottom of an outer housing. An inlet window is formed in the bottom between the screen plate and the high voltage transformer. An air duct is produced in a gap between the screen plate and the high voltage transformer. The screen plate carries at least one electric component. A printed circuit board supporting a plurality of circuit elements such as a semiconductor chip, etc., is separated from the high voltage transformer by the screen plate. In addition to the high voltage transformer, the screen plate containing the electrical component disposed thereon is cooled by air flowing through the air duct, the air being circulated with the help of a cooling blower. The air also serves to cool a magnetron operated to control the microwave oven.

REFERENCES:
patent: 3654417 (1972-04-01), Javes et al.
patent: 4123643 (1978-10-01), Burke
patent: 4184945 (1980-01-01), Morgan et al.
patent: 4221949 (1980-09-01), Minakawa
patent: 4327274 (1982-04-01), White et al.

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