Freeze valve having multiple heating-cooling means

Details Freeze valve having multiple heating-cooling means Freeze valve having multiple heating-cooling means

1983-05-17

1984-07-17

Schor, Kenneth M.

Glass manufacturing

Molten glass dispensing means

Discharge orifice below melt level

65326, 65334, 65128, 137 13, C03B 526

Patent

active

044603983

ABSTRACT:
A freeze valve for a molten glass discharging nozzle is disposed at the bottom of a glass melting furnace. The freeze valve has at least two sets of temperature control units provided around the nozzle and arranged in series in the longitudinal direction of the nozzle, and an ejector for ejecting a high-pressure gas disposed at the lower end of the nozzle and adapted to eject the high-pressure gas toward the axis of the nozzle. Each of the temperature control units includes heating and cooling means so as to heat and cool independently both the upper and lower portions of the nozzle.

REFERENCES:
patent: 1840458 (1932-01-01), Lott
patent: 1956171 (1934-04-01), Hitner
patent: 2186718 (1940-01-01), Ferguson
patent: 2250110 (1941-07-01), Kucera
patent: 2978750 (1961-04-01), McMullen
patent: 3271126 (1966-09-01), Jenkins
patent: 3580976 (1971-05-01), Bussy
patent: 4402724 (1983-09-01), Weisenburger et al.

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