| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable inductance device that can adjust an inductance by a simple configuration, in a large-current induction heating apparatus.SOLUTION: A variable inductance device 1 comprises a pair of main conductors 21, and a pair of variable plates 22 arranged so as to cover lateral faces of the main conductors 21. The main conductors 21 configure a part of a power path between a high-frequency power supply device and an induction heating coil. An interval between both main conductors 21 can be adjusted by a position adjustment mechanism 23 at an upper end part, and thereby, an inductance is greatly changed. Further, by adjusting a distance between the pair of variable plates 22, the inductance is changed finely.SELECTED DRAWING: Figure 3 |
