| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an induction heating device capable of efficiently heating a heating load by executing optimal drive according to the heating load, and of minimizing leakage magnetic flux. <P>SOLUTION: This induction heating device includes: a heat-resistant top plate 17 for mounting a heating load thereon; an operation part 81; a D.C. power source part 11; a heating coil 8 being a heating coil 8 comprising a plurality of divided coils, wherein an inner coil 1 and an outer coil 2 are magnetically coupled to each other at an arbitrary coefficient; arms 5, 6 and 7 respectively connected to the inner coil 1 and the outer coil 2 for converting the output of the D.C. power source part 11 to high-frequency currents to supply the high-frequency currents having the same frequency to the inner coil 1 and the outer coil 2; and a control circuit 80 controlling the arms 5, 6 and 7. The control circuit 80 changes the phase difference of a plurality of drive control signals driving the arms 5, 6 and 7 in response to a setting state operated by a user to control the values of the high-frequency currents supplied from the arms 5, 6 and 7. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
