Feeding arrangement for a microwave oven

DETAILED DESCRIPTION What is claimed is: 1.
In a microwave oven having a microwave source mounted external to an oven cavity bounded by a plurality of conductive walls for feeding microwave energy into the interior of the oven cavity, the improvement comprising: an elongated groove-shaped recess in one of said conductive cavity walls; a microwave radiator directly connected to the microwave source and positioned for injecting microwave radiation into the recess; an essentially plane, periodically movable asymmetrical conductive plate, having different transverse dimenions and being asymmetrical relative to its center, arranged within the oven cavity in front of the recess and proximate said one conductive cavity wall, said plate being shaped and dimensioned so that, during a periodic movement of said plate, periodically varying passages between the recess and the oven cavity at both ends of the recess are formed, said passages allowing microwave energy to radiate into the interior of the oven cavity and mounting means for mounting said asymmetrical conductive plate for periodic movement relative to said recess.
2.
An arrangement as claimed in claim 1, characterized in that the recess is terminated at both ends by oblique portions that continue in said one cavity wall.
3.
An arrangement as claimed in claims 1 or 2, characterized in that the microwave energy feeding point is centrally located in the recess.
4.
An arrangement as claimed in claim 1 or 2, characterized in that the recess has a substantially rectangular cross section.
5.
An arrangement as claimed in claim 1 or 2, characterized in that said essentially plane conductive plate is rotatably mounted about an axis of rotation located centrally in the recess and substantially coinciding with the microwave radiator, and in that said plate comprises at least two diametrically opposite sections having mutually different openings which are positioned and dimensioned that so as to allow transfer of microwave energy from the recess to the oven cavity at both ends of the recess when said two sections coincide with the recess during the rotary movement of said plate; and said mounting means comprising means for mounting said asymmetrical conductive plate for rotation about said axis of rotation