Neturen Co., Ltd.

Gorou Atsuta

Fumiaki Ikuta

Yue Yang

Shinichi Takase

A converter () converts an AC electric power (e) to the DC electric power with a DC voltage value corresponding to a setting. An inverter () is controlled by a frequency electric power control circuit () to convert the DC electric power to a dual frequency AC electric power for alternately outputting low and high frequencies at a frequency ratio (duty) corresponding to the setting. A matching transformer () having a tap (C) at which the resonance impedance corresponds to the output impedance of a generator () receives the dual frequency AC electric power. A low-frequency series resonance circuit () or a high-frequency series resonance circuit () is caused to provide a series resonance, thereby causing an induction heating coil () to induction heat a workpiece-to-be-heated (). In this way, the single generator () and the single induction heating coil () are used to effectively induction heat the workpiece-to-be-heated () by means of the dual frequency resonance.

Growing community of inventors

Hiratsuka, Japan

Gorou Atsuta