Electric cooker using induction heater

An electric cooker using induction heating, comprising:

• a first work coil wound in a substantially pipe-like shape for generating an alternating magnetic flux;
• an induction coil wound in a substantially pipe-like shape disposed inside and coaxially with the first work coil;
• an insulator having a substantially pipe-like shape disposed between the first work coil and the induction coil;
• a second work coil wound in a plane shape disposed adjacent to an upper opening of the insulator, the second work coil connected to the both ends of the induction coil;
• and
• a top plate disposed above the second work coil, suitable for supporting a container holding food to be heated.

An electric cooker using induction heating, comprising:

• a first work coil wound in a substantially pipe-like shape for generating an alternating magnetic flux;
• a high frequency inverter circuit for driving the first work coil;
• an insulator having a substantially pipe-like shape disposed inside the first work coil;
• a pair of a grill set and an IH set, only one of which is to be used at one time;
• the grill set including
• a metal heating member having a substantially pipe-like shape disposed inside the insulator and coaxially with the first work coil for being heated by the alternating magnetic flux generated by the first work coil so as to generate heat rays, and
• a support for foods to be grilled, in use disposed adjacently to an upper opening of the insulator;
• and
• the IH set including
• an induction coil wound in a substantially pipe-like shape disposed inside the insulator and coaxially with the first work coil;
• a second work coil wound in a plane shape, in use disposed adjacently to an upper opening of the insulator, the second work coil connected to the both ends of the induction coil;
• and
• a top plate disposed above the second work coil, in use suitable for supporting a container for food to be heated.