Method and apparatus for effecting by microwaves a substantially

Details Method and apparatus for effecting by microwaves a substantially Method and apparatus for effecting by microwaves a substantially

1979-12-26

1982-04-06

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

219 1055F, 219 1055M, 264 26, H05B 674

Patent

active

043237452

ABSTRACT:
A method and an apparatus for accomplishing substantially uniform heating of a dielectric material, e.g., an injection molded plastic, attached to, i.e., filling and engaging the walls of a metal encased cavity using microwave energy supplied simultaneously into the cavity at two different frequencies so that two resonance modes arise within the cavity, the two frequencies being so chosen to differ slightly and so that the resonance modes which arise have no coinciding zero points within the cavity. The apparatus has microwave sources connected by waveguides or coaxial conductors into different locations in the cavity. By avoiding coincidence of zero points of the resonance mode an even uniform heating of the material in the cavity is accomplished.

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