INDUCTION-HEATING COOKING SYSTEM AND PROCESS FOR CONTROLLING AN INDUCTION-HEATING COOKING SYSTEM

摘要

The controller of the present invention is adapted to a) determine whether or not the heated-subject stands over each one of the heating coils in accordance with the calculated the load resistance (R i ) and the calculated resonance frequency (Fr i ) of each one of the heating coils when controlling each of the drive circuitries to supply the high-frequency current having a first detection frequency (F S1 ), b) define a drive frequency (F D ) as the highest one of the calculated resonance frequency (Fr i ) of the heating coils plus a predetermined additive frequency (”F), and c) control each of the drive circuitries of the heating coils which the heated-subject is determined as standing over, to supply the high-frequency current having the drive frequency (F D ). According to the present invention, an induction-heating cooking system is provided which supplies each of the heating coils with high-frequency current having the optimal drive frequency to enhance the heating efficiency without a risk of the adverse impact on the switching elements of the driving circuitries.