Apparatus for microwave heating of ceramic

Details Apparatus for microwave heating of ceramic Apparatus for microwave heating of ceramic

1987-02-24

1988-09-13

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055A, 264 25, H05B 668

Patent

active

047711531

ABSTRACT:
An apparatus for heating a ceramic by microwave power. The apparatus has a cavity resonator in which the ceramic is placed. The resonator is provided with a variable iris. The apparatus detects the temperature of the ceramic or other state of the ceramic, and adjusts the area of the opening in the iris in the resonator and the resonant frequency of the resonator according to the signal produced by the detection, in order to bring the resonator substantially into resonance and the degree of coupling to exactly or nearly unity. Alternatively, the apparatus adjusts its microwave power for these purposes. The apparatus can heat the ceramic efficiently at a desired heating rate.

REFERENCES:
patent: 3461401 (1969-08-01), Williams
patent: 4057702 (1977-11-01), Lacombz-Allard
patent: 4196332 (1980-04-01), Mackay et al.
patent: 4210795 (1980-07-01), Lentz
patent: 4314128 (1982-02-01), Chitre
patent: 4567340 (1986-01-01), Latchum, Jr.
patent: 4689459 (1987-08-01), Gerling
"Microwave Sintering of Ceramics", (Feb. 1984), by Northwestern University.

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