ELECTROMAGNETIC INDUCTION HEATING DEVICE

摘要

Provided is a low cost and highly safe electromagnetic induction heating device capable of uniformly heating an object to be heated. A work coil (26) has a basic coil (28) located at the innermost position, a first coil (30) located at the intermediate position, and a second coil (32) located at the outermost position, the latter two coils being connected in series to the basic coil (28). The first coil (30) and the second coil (32) are connected in parallel to each other. A switching circuit (16) for supplying a high-frequency current is connected to the first coil 30, and a second switching circuit 18 for supplying a high-frequency current is connected to the second coil 32.