| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an induction heating cooker which can improve heating efficiency and control heating distribution while heating a pan smaller than a heating coil in diameter, and perform optimized temperature control according to a size of an object to be heated. <P>SOLUTION: The induction heating cooker has a plurality of resonance circuits 56 and 57 which are connected in parallel with an inverter circuit 40, and a first heating coil 48 and a second heating coil 49 are provided, respectively, for inductively heating an object to be heated. In the induction heating cooker, the inverter circuit 40 operates in a frequency domain higher than the highest resonance frequency among resonance frequencies of the resonance circuits 56 and 57. Inductance values of the heating coils and capacitance values of capacitors in the resonance circuits are set to achieve a power distribution in which the object to be heated is inductively heated by all the heating coils in the plurality of resonance circuits in a frequency domain where switching elements operate. Heating is controlled based on values detected by heated object temperature detection means 33a and 33b. <P>COPYRIGHT: (C)2012,JPO&INPIT |
