Patent ID: 8723089
Filing Date: 2014-05-13
Classification: H02M,H05B,Y02B

Abstract:
1. An induction heating apparatus, comprising: a boosting function unit that includes a choke coil and a first switching element, the first switching element having a high potential side terminal connected to an output end of the choke coil and being used for a boosting operation in which the first switching element is turned on to accumulate energy in the choke coil and is turned off to supply the energy to a capacitor of an output side via a diode, wherein the boosting function unit inputs a direct-current power, boosts the direct-current power to a direct-current voltage having a peak value larger than a peak value of the direct-current power, and outputs the boosted direct-current voltage; an inverter circuit having a heating coil and which inputs the direct-current voltage output from the booster function unit to generate a high frequency current in the heating coil by on/off operation of a second switching element; a boosting control unit that controls the boosting operation of the boosting function unit by conduction-controlling the first switching element; and an inverter controller that controls an operation of the inverter circuit, wherein, in order to stop a heating operation of the induction heating apparatus, the boosting control unit stops the boosting operation of the boosting function unit, and the inverter controller stops the operation of the inverter circuit after the boosting control unit stops the boosting operation of the boosting function unit.