Coil disc of electromagnetic furnace

Disclosed is a coil disc of an electromagnetic furnace, comprising a supporter (1), an iron oxide magnetic bar (2) and coils (3). The diameter of the inner circle (4) of the supporter (1) is from 16 MM to 35 MM, the diameter of the outer circle (5) of the supporter (1) is from 160 MM to 250 MM, and the radian of the supporter (1) centrally subsides from 10 MM to 40 MM. The size range, the radian range, the count of the per share of a copper core and the electric inductance of the designed supporter are compromised with the optimal designs of a cooking pan and an arc cooking pan, and therefore, the utility model has the advantages of universality of the cooking pan and concave bottom cooking pans and optimum cooking conditions.