Electric heating – Metal heating – Of cylinders
Patent
1988-07-25
1990-10-30
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1055E, 323325, 323901, H05B 668
Patent
active
049670514
ABSTRACT:
A high-frequency heating apparatus comprises a semiconductor power converter which is supplied with electric power from a commercial power supply, a radio wave radiation section which is energized by the semiconductor power converter, a control section which controls the operation of a semiconductor element of the semiconductor power converter, and a start control section which controls the operation of the control section at the start time of the high-frequency heating apparatus. The start control section controls the operation of the control section so that the radio wave output power from the radio wave radiation section at the start time of the high-frequency heating apparatus becomes greater than that in the steady operation state thereof, whereby optimization of the performance and price of the heating apparatus can be realized.
REFERENCES:
patent: 4130749 (1978-12-01), Tanaka et al.
patent: 4525615 (1985-06-01), Wyland
patent: 4533809 (1985-08-01), Eke
Maehara Naoyoshi
Matsumoto Takahiro
Niwa Takashi
Sakamoto Kazuho
Suenaga Haruo
Leung Philip H.
Matsushita Electric - Industrial Co., Ltd.
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