Cooling fan for microwave oven

Details Cooling fan for microwave oven Cooling fan for microwave oven

2005-06-28

2005-06-28

Van, Quang T. (Department: 3742)

Electric heating

Microwave heating

Enclosed cavity structure

C126S02100R

Reexamination Certificate

active

06911636

ABSTRACT:
Disclosed is a cooling fan for a microwave oven, adapted for directing axially sucked airflow to be evenly distributed over a magnetron and a high voltage transformer. The cooling fan comprises a mixed flow fan having a specified hub angle, or an axial flow fan having optimized design parameters such as a ratio of an outer diameter of the fan to a width of a electric device chamber defined in a cabinet, a hub ratio, a sweep angle, a pitch angle, a maximum camber rate, etc.

REFERENCES:
patent: 4661669 (1987-04-01), Matsushima et al.
patent: 5798505 (1998-08-01), Lee
patent: 2302141 (1997-01-01), None

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