Forehearth electrode firing

Details Forehearth electrode firing Forehearth electrode firing

1984-08-31

1986-02-04

Envall, Jr., Roy N.

Industrial electric heating furnaces

Glass furnace device

Joule effect heating

C03B 5027

Patent

active

045690553

ABSTRACT:
Pairs of electrodes are symmetrically placed about the bend of a forehearth of a glass melting furnace. The electrodes are connected to the dual secondary windings of a step down transformer such that the firing paths of the electrodes cross each other in the molten material. The flow of the material across the firing paths coupled with the electrodes being connected to the dual secondaries of a common step-down transformer prevents hot spots and produces a balanced current flow across both firing paths.

REFERENCES:
patent: 3855412 (1974-12-01), Maddux
patent: 3885945 (1975-05-01), Rees et al.
patent: 4000360 (1976-12-01), Gell et al.
patent: 4049899 (1977-09-01), Shimizu et al.
patent: 4211887 (1980-07-01), Williamson
patent: 4247733 (1981-01-01), Stevenson
patent: 4282393 (1981-08-01), Williamson
patent: 4309567 (1982-01-01), Williamson
patent: 4410997 (1983-10-01), Gell et al.
patent: 4410998 (1983-10-01), Germann et al.

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