Microwave heating apparatus with resistive heaters

Details Microwave heating apparatus with resistive heaters Microwave heating apparatus with resistive heaters

1980-03-12

1981-11-03

Rubinson, Gene Z.

Electric heating

Metal heating

Of cylinders

219 1055D, 219 1055C, H05B 668, H05B 676

Patent

active

042987806

ABSTRACT:
A microwave heating apparatus comprises a heating chamber, high frequency radio wave generator and heating resistors selectively connected through first and second switches to a power supply, and a control circuit connected through the first switch to the power supply. The heating apparatus also comprises heating resistor coupling units each including a displaceable member and a third switch. The displaceable member is displaced when the heater end is inserted into a predetermined position of the coupling unit. The third switch is closed when this displaceable member is displaced. This third switch is connected in series between the first switch and the control circuit. The high frequency radio wave generator or the heater is not connected to the power supply unless the heater end is completely connected to the heater coupling unit. Accordingly, it can prevent external leakage of the radio wave, dielectric breakdown accident or the like.

REFERENCES:
patent: 3196243 (1965-07-01), Schall
patent: 3700846 (1972-10-01), Ishikawa et al.
patent: 4191877 (1980-03-01), Tanaka et al.

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