High frequency heating device

Details High frequency heating device High frequency heating device

H - Electricity

05

B

327/2.11

H05B 6/46 (2006.01) H05B 6/72 (2006.01) H05B 6/80 (2006.01)

Patent

CA 1263713

ABSTRACT OF THE DISCLOSURE A high frequency heating device having a high frequency oscillator, a heating chamber for accommodating an object to be heated, and a wave guide for coupling the high frequency oscillator to the heating chamber is dis- closed. The wave guide is a cylindrical wave guide, an output antenna for the high frequency oscillator is disposed on a center axis of an input end portion of the cylindrical wave guide, a wall of the heating chamber, which is coupled to the cylindrical wave guide, is positioned in an end plane of the cylindrical wave guide opposite to the output antenna of the high frequency oscillator, and an arcuate slit is formed in the coupling wall of the heating chamber, being centered at the center axis of the cylind- rical wave guide. Higher harmonic electromagnetic waves in the heating chamber are suppressed, and the impedance matching and the adjustment of high frequency heating performance are facilitated. Further, the manufacture of the wave guide is made easy and the working precision thereof is improved.

525466

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