Patent ID: 8901470
Filing Date: 2014-12-02
Classification: H01L,H05B,Y02B

Abstract:
1. A microwave heating apparatus, comprising: a heating chamber accommodating an article to be heated; an oscillation part for generating microwaves; a power division part for dividing an output of the oscillation part into a plurality of outputs and outputting the divided outputs; amplification parts for respectively amplifying the outputs of the power division part; feeding parts for respectively supplying outputs of the amplification parts to the heating chamber; power detection parts for detecting reflected powers transmitted from the heating chamber to the amplification parts via the feeding parts; and a control part for controlling an oscillating frequency of the oscillation part, wherein each of the feeding parts integrally has a plurality of antennas for supplying the microwaves having different characteristics to the heating chamber, wherein the plurality of antennas emits the microwaves having the different characteristics to the heating chamber, and the control part extracts the oscillating frequency at which a minimum reflected power is detected by the power detection parts, and causes the oscillation part to oscillate at the extracted oscillating frequency so as to supply the microwaves having the different characteristics from the plurality of antennas to the heating chamber.