Strip heating coil apparatus with series power supplies

Details Strip heating coil apparatus with series power supplies Strip heating coil apparatus with series power supplies

1997-09-11

1998-11-17

Leung, Philip H.

Electric heating

Inductive heating

Specific heating application

219672, 219673, 219671, H05B 610, H05B 640

Patent

active

058379762

ABSTRACT:
An induction heating apparatus for heating continuous strip material. In a first embodiment, two coil sections each having a gap at one end for the strip material to pass edgewise into and out of the apparatus for heating wherein the coil sections are adapted for connection to two power supplies such that the first power supply connects through one half-turn of each of the coil sections, and thence to the second power supply, which is connected through the second half-turns of the respective coil sections and back to the first power supply, all in series. In a second embodiment, the coil sections are adapted for connection to four power supplies in series; each power supply connected to a respective half-turn of the coil sections, such that one half-turn is connected between each of the four power supplies. The series connection ensures uniform amplitude and phase of the electrical current applied to the induction heating coil apparatus.

REFERENCES:
patent: 2655590 (1953-10-01), Gardner
patent: 2676242 (1954-04-01), Witsenburg
patent: 4258241 (1981-03-01), Soworowski
patent: 5001319 (1991-03-01), Holmstrom
patent: 5317121 (1994-05-01), Katayama et al.
patent: 5345065 (1994-09-01), Reinke et al.
patent: 5495094 (1996-02-01), Rowan et al.

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