Whirlpool Corporation

Whirlpool Europe B.v.

Dan Carlsson

Ulf Nordh

Per O Risman

Kurt H Carlsson

A device and a method for microwave feeding of an oven cavity by means of a coupling slot (,) which is fed by a waveguide. The a-dimension of the waveguide is significantly larger than the effective a-dimension of the slot. The slot comprised a radiating main slot part (,) and slot extensions (,) projecting from it at its respective sides, which extension have a substantially smaller cross-dimension than the b-dimension of the main slot part.

Microwave feeding of an oven cavity

A microwave oven with an oven cavity and a microwave feed system which produces a microwave distribution of polarized microwaves with essentially defined field vector orientations relative to one of the walls of the cavity. A zone defining an expansion of volume which opens into the cavity and whose dimensions are tuned to the wavelength and field distribution in the cavity, is disposed in a wall of the cavity. The expansion does not affect the effective field distribution in the cavity and can be used for concealed placement of a grill element or light source.

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Norrkoping, Sweden

Dan Carlsson