| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To suppress occurrence of interference sound, in an induction heating cooker having three induction heating openings. <P>SOLUTION: The induction heating cooker is provided with two heating coils 101, 201 arranged near the front surface of a main body, a heating coil 301 arranged on the back side between the above heating coils, and inverters 100, 200 and 300 supplying power to the heating coils. The inverters of the two heating coils arranged near the front surface of the main body carry out output control of the heating coils 101, 102 by making frequencies of conducting current variable. The inverter of the heating coil 301 arranged on the back side of the main body carries out output control of the heating coil 301 by making a frequency of conducting current fixed and on-off duty cycle variable. Thus, a frequency used for the heating coil 301 arranged on the back side is set higher than the highest frequency in a frequency band used for the heating coils arranged near the front surface. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
