INDUCTION HEATING COOKER WITH CONTACTLESS POWER SUPPLY FUNCTION AND CONTROL METHOD FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an induction heating cooker with a contactless power supply function for selectively applying a pulsation DC voltage or steady DC voltage to an inverter circuit according to a load mounted on a top plate to efficiently inductively heat a heating target, and contactlessly supply power to power reception equipment with high power factor.SOLUTION: An induction heating cooker with a contactless power supply function comprises a heating power supply coil disposed below a top plate on which a load is mounted, a rectifying circuit for rectifying a commercial AC power source to a pulsation DC voltage whose magnitude varies periodically, a power factor enhancing circuit for converting the pulsation DC voltage rectified in the rectifying circuit to a steady DC voltage whose magnitude is constant, an inverter circuit for supplying high-frequency current to the heating power supply coil, and load determining means for selectively applying the pulsation DC voltage or the steady DC voltage to the inverter circuit according to the load mounted on the top plate.SELECTED DRAWING: Figure 1