H - Electricity – 05 – B
Patent
H - Electricity
05
B
327/27
H05B 6/44 (2006.01) C21D 9/60 (2006.01) F27B 9/06 (2006.01) H05B 6/02 (2006.01) H05B 6/40 (2006.01)
Patent
CA 2033939
INDUCTION HEATING ASSEMBLY INCLUDING AN INTERPOSED CLOSED CONDUCTIVE LOOP FOR SUPPRESSION OF INTERCOIL COUPLING Abstract of the Disclosure An induction strip heating assembly is provided having multiple induction coils disposed in coaxial tandem and including at least two coil power sources for generation of first and second inducing currents in the coils for the induction heating of a workpiece, such as steel strip, passing therethrough. It is a feature of the invention that the assembly includes a closed loop of electrically conductive material coaxially interposed relative to the induction coils and disposed for induction therein of a circulating current opposite to a one of the inducing currents whereby a magnetic field of the circulating current in opposition to an inducing magnetic field of the inducing current causes a reduction in net magnetic field strength on a side of the loop opposite of the inducing current. Such an assembly provides suppression of intercoil magnetic coupling so that the coils may be spaced adjacent one another with less space between them than would be required if no loops were used.
Havas George
Howell Charles N.
Ajax Magnethermic Corporation
Sim & Mcburney
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