Patent ID: 6982401

Claim:
A microwave oven comprising: a cavity for placing food therein; a magnetron for generating a microwave; a waveguide having at least two slots for guiding the microwave from the magnetron into the cavity, the at least two slots being formed near peak points of intensity of a magnetic field in the waveguide, respectively, an interval of approximately λg/2 being between two adjacent slots of the at least two slots, λg denoting a wavelength of the microwave in the waveguide; and a stirrer fan rotatably mounted on one side of the cavity for varying an interfered state of the microwaves, periodically, the stirrer fan having a rotation shaft located near a peak point of intensity of an electric field in the waveguide, the rotation shaft of the stirrer fan having a distance of approximately λg/4 to a closest slot of the at least two slots.