| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an induction heating cooker capable of reducing leakage magnetic flux when a small diameter pan is placed by making its outermost diameter small as much as possible by sufficiently securing the number of windings of a small diameter heating coil to reduce a circuit loss and a coil loss. <P>SOLUTION: This induction heating cooker includes an inverter to output a high frequency ac voltage by converting a dc voltage, a plurality of almost concentric heating coils 5a, 5b connected to the output stages of the inverter respectively and disposed on the almost same plane, a coil base 10 to support a plurality of the heating coils 5a, 5b from the lower part, and a top plate 11 disposed in the upper part of a plurality of the heating coils 5a, 5b. The wires of a plurality of the heating coils 5a, 5b each have the same wire diameters and the same number of strands, and among a plurality of the heating coils 5a, 5b, the number of winding layers of the small diameter heating coil 5a is differentiated from the number of winding layers of the large diameter heating coil 5b. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
