JP2008021493A5 - - Google Patents

Claims (9)

A heating chamber in which an object to be heated is stored, a microwave generating means for generating a microwave to be supplied to the heating chamber, and a plurality of radiating means for supplying the microwave generated from the microwave generating means to the heating chamber; The radiating means has a pair of radiating means arranged opposite to each other , and is controlled to radiate from the pair of radiating means by controlling a phase shifter that varies the phase of the microwaves transmitted to the pair of radiating means. A microwave utilization device that variably controls the phase difference of microwaves. The microwave utilization apparatus according to claim 1, wherein the pair of radiating means are disposed on the left and right side surfaces of the heating chamber. The microwave generation means includes an oscillating unit, a power distributor that equally divides the output of the oscillating unit into a plurality, and an amplifying unit that amplifies the output of the power distributor, and the power distributor and the 2. The microwave utilization device according to claim 1, wherein phase shifters are respectively arranged in at least two transmission paths of the transmission path to the amplification unit. 4. The microwave utilization apparatus according to claim 3, wherein the microwave that has passed through the transmission path in which the phase shifter is disposed is guided to the radiation means that is disposed oppositely. 4. The microwave utilization apparatus according to claim 3, wherein the phase of the microwave input to each phase shifter has a phase difference of 90 degrees. The microwave utilization apparatus according to claim 1, wherein the variable maximum of the phase difference between the pair of radiation means is at least 180 degrees or more. The microwave utilization apparatus according to claim 1, wherein the means for varying the phase is a voltage variable type. The microwave utilization device according to claim 7, wherein the variable range of the voltage variable type phase is at least 90 degrees or more. The microwave utilization apparatus according to claim 1, wherein the microwave generation means is configured to generate a frequency from 2400 MHz to 2500 MHz.