Method and apparatus for heating a workpiece in an inert...

Details Method and apparatus for heating a workpiece in an inert... Method and apparatus for heating a workpiece in an inert...

2005-08-31

2008-09-09

Van, Quang T (Department: 3742)

Industrial electric heating furnaces

Induction furnace device

Core-type

C373S150000, C219S632000, C219S635000

Reexamination Certificate

active

07424045

ABSTRACT:
An induction furnace includes a cylinder, a top and bottom cover that seal the top and bottom ends of the cylinder, and coolant passages within the cylinder and the covers. The induction furnace further includes a power supply and a coil. The coil surrounds the chamber and is hollow to allow flow of coolant therethrough. A susceptor susceptible to induction heating is located in the chamber and includes top and bottom pieces. A thermal insulator is disposed between the susceptor and the inner walls of the chamber and can be formed of a fused quartz cylinder within which the susceptor and the workpiece are contained. The thermal insulator can also include infrared reflectors and insulating members on the ends of the susceptor to reduce heat leakage to parts of the furnace outside of the susceptor.

REFERENCES:
patent: 4774992 (1988-10-01), George
patent: 6639196 (2003-10-01), Fiala et al.
patent: 2003/0209540 (2003-11-01), Dahake et al.

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