US 12,225,653 B2
Heating device
Hiroshi Itakura, Tokyo (JP); and Takeshi Oshima, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
Filed on Sep. 8, 2021, as Appl. No. 17/468,788.
Application 17/468,788 is a continuation of application No. PCT/JP2019/015990, filed on Apr. 12, 2019.
Prior Publication US 2021/0410241 A1, Dec. 30, 2021
Int. Cl. H05B 6/68 (2006.01); H05B 6/66 (2006.01); H05B 6/72 (2006.01)
CPC H05B 6/686 (2013.01) [H05B 6/664 (2013.01); H05B 6/72 (2013.01); H05B 2206/044 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A heating device comprising:
a heating chamber in which an object to be heated is housed;
a power generator generating microwave power;
a power distribution circuit distributing the microwave power generated by the power generator into a plurality of microwave powers; and
a plurality of pairs of microwave radiators arranged on at least one plane orthogonal to a reference line set in the heating chamber, the plurality of pairs of microwave radiators each including two microwave radiators being arranged on opposite sides with respect to an intersection point between the reference line and the at least one plane, wherein
the power distribution circuit distributes the plurality of microwave powers to a plurality of microwave radiators included in the plurality of pairs of microwave radiators by setting a phase difference of an angle obtained by dividing 360° by the number of the plurality of the microwave radiators clockwise or counterclockwise in turn around the reference line.