HIGH-FREQUENCY HEATING DEVICE

摘要

PURPOSE:To select two using modes of induction heating and dielectric heating with one set of high-frequency heating device by providing a switching circuit feeding a high-frequency power supply to one of a booster transformer and an exciting coil. CONSTITUTION:A power supply 13 is interlocked with the opening or closing of a door and converted into a high-frequency power supply 18 by an inverter circuit 17 through the first door switch 14 short-circuited when closed, the first switching relay 15, and a main relay 16 and switched by a switching circuit 19 and connected to one side of a booster transformer 4 feeding the high-voltage power to an exciting coil 5 or a magnetron 3. When the door is opened, the high-frequency power supply 18 is not applied to the booster transformer 4, and the high-frequency power supply 18 is applied to the exciting coil 5 regardless of the opening or closing of the door. Inducting heating or dielectric heating can be thereby selected with one set of high-frequency heating device.