High voltage transformer of a microwave oven having a structure

Details High voltage transformer of a microwave oven having a structure High voltage transformer of a microwave oven having a structure

1998-07-15

1999-09-21

Leung, Philip H.

Electric heating

Microwave heating

Enclosed cavity structure

219760, 336 60, H05B 680, H01F 2708

Patent

active

059549882

ABSTRACT:
A high voltage transformer of a microwave oven has a structure for radiating heat efficiently. The high voltage transformer comprises a core formed of a plurality of iron plates fixed together one after another, a coil wound on the core, and heat radiation fins disposed between the iron plates in such a manner that flange parts of the fins extend outwardly beyond an outer periphery of the core. The heat radiation fins are spaced from the iron plates so as not to be in contact with the iron plates, and are made of a high thermal conductivity material. Portions of the flange parts are bent to form air flow openings that conduct cooling air in close contact with the core.

REFERENCES:
patent: 3810303 (1974-05-01), Hoell
patent: 4746425 (1988-05-01), Stickler et al.
patent: 4858095 (1989-08-01), Narita et al.
patent: 4956626 (1990-09-01), Hoppe et al.
patent: 5164626 (1992-11-01), Oigawa
patent: 5660749 (1997-08-01), Taguchi et al.

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