To provide an induction heating device capable of performing stable induction heating by eliminating current unevenness between coil stages, which is controversial in induction heating by using a plurality of induction coil stages, to thereby avoid local heat generation and melting damage of the induction coils.
The induction heating device performs induction heating of metal to be heated disposed inside circular induction coils arranged in a plurality of stages by energizing the circular induction coils. The induction heating device is provided with a power supply, front-side and rear-side coil conductors of each stage, a front-side connection conductor, and a rear-side connection conductor. The induction heating device is further provided with front and rear connection conductors connecting, on the side opposite to the power supply side, one of the front-side coil conductors of the induction coils arranged in the plurality of stages to one of the rear-side coil conductors of the induction coils arranged in the plurality of stages, the one of the rear-side coil conductors being of a stage different from the stage of the one of the front-side coil conductors. The induction heating device is also structured such that current of a same phase flows in the front-side coil conductors of the induction coils arranged in the plurality of stages and current of a same phase flows in the rear-side coil conductors of the induction coils arranged in the plurality of stages.
COPYRIGHT: (C)2010,JPO&INPIT
| JP11233247A | ||||
| JP58158890A |
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Nakamura Asayuki
Nagasaka Tomoyasu