Patent ID: 7009159
Filing Date: 2006-03-07
Classification: H05B

Abstract:
1. An induction heating apparatus comprising: an induction heating coil for generating a high-frequency magnetic field and heats an object to be heated; an inverter circuit for driving said induction heating coil; a conductive shielding member provided between said object to be heated and said induction heating coil and electrically connected to a low-potential part; a sensing portion for applying to the shielding member a voltage different from a voltage generated by said induction heating coil and sensing a conduction condition of said shielding member; and a control portion for controlling said inverter circuit based on the conduction condition, wherein when said induction heating coil is stopped, said sensing portion applies the voltage different from the voltage generated by said induction heating coil to said shielding member, and senses the conduction condition of said shielding member, and when said induction heating coil is energized, said sensing portion senses the conduction condition of said shielding member based on a noise induced in the said shielding member by the induction heating coil.