High frequency heating apparatus with electric heating device

Details High frequency heating apparatus with electric heating device High frequency heating apparatus with electric heating device

1987-09-04

1988-05-17

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055F, 219396, 219407, H05B 664

Patent

active

047452463

ABSTRACT:
A high frequency heating apparatus wherein oven heating and grill heating are performed by means of a flat heating element, and no heater and projections such as an insulator for holding a heater are provided, whereby, when high frequency microwave energy is supplied to the heating chamber with an oven plate placed in the heating chamber, abnormal heating such as local heating and sparks do not occur. Also, with the oven plate placed in the heating chamber, heating can be performed by means of high frequency microwaves and a heater which can be used alternately or in combination depending on situations to obtain the most preferably heating condition.

REFERENCES:
patent: 3155814 (1964-11-01), Appleman et al.
patent: 3626135 (1971-12-01), Fitzmayer
patent: 3878350 (1975-04-01), Takagi
patent: 3979575 (1976-09-01), Maahs
patent: 4137442 (1979-01-01), Tateda
patent: 4196330 (1980-04-01), Payne
patent: 4308444 (1981-12-01), Takagi et al.
patent: 4675507 (1987-06-01), Akiyoshi et al.

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