High frequency water cooled induction heating transformer

Abstract

A high frequency water cooled transformer for coupling a power source to an induction heating coil and which serves to convert the output of the power source into values appropriate for the induction heating coil, and to match the impedance of the power source with the impedance of the heating coil for maximum power transfer efficiency. The primary of the transformer is adapted to be connected to the power source and the secondary is adapted to be connected to the induction heating coil. The transformer includes a secondary formed of two parallel self-supporting elongated open-ended electrically conductive cylindrical members which are separated and insulated from one another. A pair of electrically conductive terminal blocks are respectively mounted on one of the ends of the cylinders and electrically connected to the cylinders. The primary winding is wound longitudinally through the two secondary cylinders, and the ends of the primary are connected to appropriate terminal pins. Each of the cylindrical members has an internal sleeve which defines an annular passage through the corresponding cylindrical member, and means is provided for circulating a coolant through the cylindrical members and through the terminal blocks. Each secondary cylinder is surrounded by a plurality of ferrite toroid cores, and the assembly is potted so that the cores, the secondary cylinders and the primary windings are all sealed to one another by heat conductive potting compound.

Dependencies are inferred from the claim text.