High frequency energy supply in a high frequency heating applian

Details High frequency energy supply in a high frequency heating applian High frequency energy supply in a high frequency heating applian

1980-07-29

1982-04-27

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

219 1055R, H05B 672

Patent

active

043272673

ABSTRACT:
There is disclosed an energy feeding device for installation in a high frequency heating appliance which includes a heating chamber, a high frequency oscillator for supplying a high frequency energy to the heating chamber, a waveguide for transmitting the high frequency electromagnetic wave generated from the high frequency oscillator, and a rotary antenna for radiating the high frequency electromagnetic wave so transmitted by the waveguide into the heating chamber. The rotary antenna has a revolving drive shaft, made of a material with a low dielectric loss and is connected to a drive source, a metal pipe which is connected to the revolving drive shaft at its socket end. The socket end of the metal pipe is expanded and rounded off, thereby substantially preventing sparking under light load.

REFERENCES:
patent: 3865301 (1975-02-01), Pothier et al.
patent: 4132239 (1979-01-01), Bowen et al.

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