The invention relates to an external
electromagnetic radiation absorption technique of an electromagnetic furnace. A panel and a bottom cover are of anti-
radiation structures with interlayers, the middle layer of the panel is a non-magnetic
metal plate, the middle layer of the bottom cover is a magnetic
metal plate, and the inner and outer faces of the interlayer of the bottom cover are insulating
layers; a circular hole is formed on the
metal plate in the middle layer of the panel, the circular hole and a heating coil in the furnace share the same center of the circle, and the
diameter of the circular hole is greater than or equal to that of the heating coil; the panel is provided with a conductor contacted with a pot bottom and a connecting line, and the connecting line bypassing the rear edge or the left and right sides of the panel enters into the electromagnetic furnace to be connected with an
electromagnetic absorption circuit; a shielding frame is arranged below an operation display part at the front end of the panel, the operation display circuit is mounted in the shielding frame and digital and
LED display and touch buttons are exposed, and the shielding frame is connected with the
electromagnetic absorption circuit; the other end of the
electromagnetic absorption circuit is connected with the metal plate of the middle interlayer of the bottom cover and a protective grounded wire (E) of a single-phase three-core power supply line. Various external
electromagnetic radiation absorption schemes are preferable.