Patent ID: 8629378

Claim:
A heating control device for a heating apparatus comprising: a power control unit connected between an external power source and a heating unit of the heating apparatus to transfer power supplied from the external power source to the heating unit; a first temperature sensor provided near the heating unit for continuously detecting the temperature of the heating unit for a predetermined amount of time during which includes a duration that power is supplied to the heating unit and a duration that power is suspended from the heating unit; a second temperature sensor provided at a portion of the heating apparatus for containing an object to be heated, for continuously detecting the temperature of the object for the predetermined amount of time; a storage unit configured to store predetermined rate of change temperature reference values based on a type of heating unit and heating apparatus being controlled by the heating control device; a micro controller unit electrically connected to the first temperature sensor, the second temperature sensor, the power control unit and the storage unit, configured to continuously receive temperature signals detected by the first and second temperature sensors during the predetermined amount of time, determine a rate of change of the detected temperatures of each of the first and second temperature sensors during the predetermined amount of time, compare the rate of change to the temperature reference values during the predetermined amount of time, and then command the power control unit to supply the heating unit with different powers according to the comparison results.