Microwave delivery system for a cooking appliance

Details Microwave delivery system for a cooking appliance Microwave delivery system for a cooking appliance

2005-05-31

2005-05-31

Leung, Philip H. (Department: 3742)

Electric heating

Microwave heating

Field modification

C219S748000, C219S756000, C333S227000

Reexamination Certificate

active

06900424

ABSTRACT:
A microwave delivery system for a cooking appliance includes a toroidal waveguide, a launching zone and a waveguide cover. The launching zone includes opposing top, bottom and side walls that form a pathway for a microwave energy field to travel from a magnetron through the waveguide and into a cooking chamber. In accordance with one aspect of the overall invention, the bottom wall of the launching zone is aligned with a bottom surface of the waveguide to establish a direct conducting surface for the microwave energy field. The waveguide cover shields a hollow interior portion of the waveguide from cooking byproducts generated in the cooking chamber during a cooking process. The waveguide cover is preferably constituted by a metallic conductor having a finish that enhances the microwave energy field distribution in the cooking chamber.

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