Electric heating – Metal heating – Of cylinders
Patent
1989-06-27
1990-09-11
Leung, Philip H.
Electric heating
Metal heating
Of cylinders
219 1055F, 219 1055R, 126 21A, 361384, H05B 664
Patent
active
049565311
ABSTRACT:
A microwave oven includes an oven cavity, into which HF power is fed from a microwave source, e.g. a magnetron energized by a power supply device. The power supply device with its components and the microwave source are cooled with the aid of a fan. The power supply device, the microwave source (12) and the fan (11) are combined into a so-called power module, which includes a substantially closed envelope (10) having an air inlet (15) and an air outlet (16), an input for the AC supply voltage and an output for HF power (30). The microwave source is mounted as a projecting part of the envelope at the air inlet or the air outlet of the power module. This makes it possible to adapt the power module to a great number of microwave oven constructions. The power module may be mounted at the top or bottom of the oven cavity or at the side of same. Feeding microwave energy into the oven cavity is possible both at the top and bottom thereof.
REFERENCES:
patent: 3829647 (1974-08-01), Igarashi
patent: 3849623 (1974-11-01), Gilliatt
patent: 4091252 (1978-05-01), Koinuma
patent: 4100463 (1978-07-01), Sugie
patent: 4184945 (1980-01-01), Morgan et al.
patent: 4556772 (1985-12-01), McCammon et al.
patent: 4849592 (1989-07-01), Claesson
Braunisch Eckart
nnegren Jan
Franzblau Bernard
Leung Philip H.
U.S. Philips Corporation
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