Induction coil in the form of a pancake coil for crucible-free z

Details Induction coil in the form of a pancake coil for crucible-free z Induction coil in the form of a pancake coil for crucible-free z

1983-07-15

1985-08-27

Pellinen, A. D.

Industrial electric heating furnaces

Induction furnace device

Zone melting

336 62, 219 1049R, C03B 2000, H05B 644

Patent

active

045382794

ABSTRACT:
A pancake induction heating coil for crucible-free zone melting of semiconductor crystal rods, includes a primary winding surrounding a semiconductor rod to be remelted in the form of a ring through which cooling liquid flows, a secondary winding surrounding the primary winding and having a side facing the semiconductor rod, and an energy concentrator lying in the plane of the primary winding and having a circular opening formed substantially in the center thereof for the semiconductor rod, the side of the secondary winding facing the semiconductor rod being electrically conductingly connected to the energy concentrator.

REFERENCES:
patent: 2870309 (1959-01-01), Capita
patent: 3644151 (1972-02-01), Keller
patent: 4184135 (1980-01-01), Gupta et al.

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