Multiple furnace controller

Details Multiple furnace controller Multiple furnace controller

1994-11-16

1997-09-09

Hoang, Tu B.

Industrial electric heating furnaces

Induction furnace device

Power supply system

373149, 219661, 363 96, H05B 606

Patent

active

056663773

ABSTRACT:
A multi-furnace control system selectively delivers preselected percentages of available power to furnaces of the system, preferably designated as either a melt furnace or a hold furnace. The power supply delivers power to both furnaces. A capacitor station in parallel connection to the power supply and the furnaces is tuned to form a tank circuit therewith. Switches control the selected power delivered to the furnaces respectively and control the delivery of a first portion of the power for holding molten product in the hold furnace as the master control. A remaining portion of the power is then delivered for melting product in the melt furnace. The capacitor station acts as a reactive tank for both furnaces.

REFERENCES:
patent: 2451518 (1948-10-01), Strickland, Jr.
patent: 4225912 (1980-09-01), Messer
patent: 4336585 (1982-06-01), Moriarty et al.
patent: 4390769 (1983-06-01), Steigerwald
patent: 4506131 (1985-03-01), Boehm et al.
patent: 4695316 (1987-09-01), Cartlidge
patent: 5250777 (1993-10-01), Fishman
patent: 5272719 (1993-12-01), Cartlidge et al.

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