초록 ▼

In an induction heat cooking apparatus of the invention, an electromagnetic field is generated by a heating coil, and the generated electromagnetic field is supplied to a load so that the load is inductively heated. The cooking apparatus includes an exciter circuit for exciting the heating coil to g

In an induction heat cooking apparatus of the invention, an electromagnetic field is generated by a heating coil, and the generated electromagnetic field is supplied to a load so that the load is inductively heated. The cooking apparatus includes an exciter circuit for exciting the heating coil to generate the electromagnetic field; a temperature set circuit for providing a temperature set signal which designates a given target temperature of the load; and a temperature measure circuit for measuring the temperature of the load to generate a temperature measure signal which represents the measured temperature of the load. The cooking apparatus further includes a difference detector circuit for detecting a difference between the temperature set signal and the temperature measure signal and generating a difference signal. The exciter circuit receives the difference signal so as to control heat power for the heating coil.

대표청구항 ▼

An induction heat cooking apparatus, comprising: a heating coil for providing an electromagnetic field, when excited to inductively heat a load; exciter means for exciting said heating coil to cause variable amount of heating power to be output therefrom; temperature setting means for providing a te

An induction heat cooking apparatus, comprising: a heating coil for providing an electromagnetic field, when excited to inductively heat a load; exciter means for exciting said heating coil to cause variable amount of heating power to be output therefrom; temperature setting means for providing a temperature set signal which designates a desired target temperature of said load; temperature measuring means for measuring a temperature of said load to generate a temperature measure signal indicative thereof; and difference detector means, coupled to said temperature measuring means, said temperature setting means and said exciter means, for detecting a difference between said temperature set signal and said temperature measure signal and generating a difference signal indicative of said difference, and for supplying a difference signal to said exciter means to control the degree of excitation thereof, said heating power for said heating heating coil being continuously controlled to variable power levels in accordance with said difference signal so that said heating power is maintained at a first constant power level until said load temperature reaches a first value, and said heating power is then decreased at a definite rate until said load temperature reaches a second value greater than said first value, said rate being less than infinity to cause said heating power to gradually decrease as a function of time, so that when said load temperature approaches said set temperature, said heating power has been lowered from said first constant level, and therefore a rate of temperature increase of the load has been lowered to thereby maintain said load temperature close to said set temperature by varying said heating power to minimize an amount of temperature overshoot.