Patent attributes
A microwave oven according to the present invention includes a body, an inner case provided in the body and partitioning the interior of the body into an inner space defining a cooking chamber and an outer space defining an electric component chamber, and a magnetron equipped in the electric component chamber for irradiating microwaves into the cooking chamber. The microwave oven also includes a tray mounted on the bottom of the cooking chamber, and a driving apparatus for driving the tray in one mode selected from a first mode in which the tray travels only in a rotational motion, a second mode in which the tray travels only in a linearly reciprocating motion, and a third mode in which the tray travels both in the rotational motion and in the linearly reciprocating motion at the same time.