Patent ID: 7199341

Claim:
A high-frequency heating apparatus comprising: a heating compartment in which a heating target is heated; a high-frequency wave generator that generates a high-frequency wave; a waveguide through which the high-frequency wave generated by the high-frequency wave generator is guided to an opening formed in the heating compartment; a freely rotatable antenna that feeds the high-frequency wave inside the waveguide into the heating compartment through the opening and that has a receiver portion and a radiator portion; a motor that rotates the antenna; and a stage that is provided above and close to the antenna so as to partition an interior of the heating compartment and that is made of a dielectric material, wherein a rotary member is placed on the stage, either magnets are provided on both the rotary member and the antenna, or a magnet is provided on one of the rotary member and the antenna and a magnetic material is provided on the other, and a magnetic coupling between the antenna and the rotary member is exploited to rotate the rotary member as the antenna is rotated.