INDUCTION HEATING DEVICE Russian patent published in 2005 - IPC

FIELD: heating bodies, primarily tanks holding chemical materials, such as salts, in chemical reactors.

SUBSTANCE: proposed induction heating device has at least one cylindrical induction coil coaxially disposed about body being heated which is connected to ac power supply and provided with external magnetic circuit enclosing it; novelty consists in that external magnetic circuit is proposed to be made so that its longitudinal dimension would exceed that of induction coil and ends of external magnetic circuit would protrude beyond induction coil edges by minimum half the size of air gap between inner surface of magnetic circuit and outer surface of body being heated. Induction heating device may have at least two cylindrical coils, distance between end portions of adjacent magnetic circuits amounting to minimum double size of air gap between inner surface of magnetic circuit and outer surface of body being heated.

EFFECT: enhanced uniformity of body (primarily tank) heating, reduced material input, enhanced power characteristics and reliability, as well as facilitated maintenance of device.

2 cl, 3 dwg