| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the malfunction of external equipment and poor influence given to a human body, by changing the frequency of high-frequency magnetic flux generated in a heating coil or the like and changing the frequency of leakage magnetic flux, when performing heating cooking by making a heating level constant. <P>SOLUTION: A frequency changing means for changing the frequency of a switching frequency signal outputted to a switching element periodically or irregularly is provided at an induction heater, having the heating coil, an inverter circuit for supplying the high-frequency current to the heating coil, and an inverter control unit that outputs a switching frequency signal to the switching element of the inverter and controls a high-frequency current supplied from the inverter circuit to the heating coil for constantly controlling the heating level of a body to be heated made of metal. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
