Microwave heating apparatus with cooling conduit

Details Microwave heating apparatus with cooling conduit Microwave heating apparatus with cooling conduit

1979-07-30

1982-02-02

Grimley, Arthur T.

Electric heating

Metal heating

Of cylinders

219 1055B, H05B 664

Patent

active

043141269

ABSTRACT:
A microwave heating apparatus has a body with a front wall, and a heating chamber within the body for holding an object to be heated. A microwave source is provided for generating microwaves, and a wave guide is connected between the microwave source and a microwave inlet for guiding the microwaves from the microwave source to the heating chamber. A radiant energy heater is disposed within the heating chamber for heating the object to be heated by radiant energy, and a power box is positioned above the chamber and housing the microwave source and the high voltage circuit components therefor. A microwave source cooling fan is provided in the power box, and thermal insulation covers the walls of the heating chamber, the upper surface of the thermal insulation on the top of the chamber and the bottom surface of the power box being spaced to provide a cooling conduit. The front wall of the body has an air suction inlet therein opening into one end of the cooling conduit, and a power box cooling fan is provided at the other end of the cooling conduit. The power box has a suction port therein opening into the cooling conduit upstream of the power box cooling fan for admitting air from the cooling conduit into the power box, the microwave source cooling fan and the power box cooling fan being in parallel flow relation.

REFERENCES:
patent: 4097709 (1978-06-01), Bachtold et al.
patent: 4100463 (1978-07-01), Sugie

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