Industrial electric heating furnaces – Glass furnace device – Joule effect heating
Reexamination Certificate
2006-01-03
2006-01-03
Hoang, Tu (Department: 3742)
Industrial electric heating furnaces
Glass furnace device
Joule effect heating
C373S030000, C373S039000
Reexamination Certificate
active
06983006
ABSTRACT:
An all-electric glass-melting deep furnace and a method of refining and supplying glass are disclosed in which high-quality molten glass is efficiently produced in large quantity at high heat efficiency. The glass-melting deep furnace20has a bottom2and a side wall4constructed by piling up fireproof bricks3on the perimeter of the bottom2. A height H of the side wall4is set to be twice or more than twice as long as an inside dimension D of the bottom2of the furnace. Since the furnace20is deep, there can be achieved a thick batch layer, a space in which glass is melted at high temperature, and a cooling area which is necessary to refine molten glass. The furnace makes it possible for the molten glass6to absorb fine seeds by its pressure and cooling effects that are produced when the seeds move downward to the bottom2.
REFERENCES:
patent: 4143232 (1979-03-01), Bansal et al.
patent: 54-22424 (1979-02-01), None
patent: 58-32030 (1983-02-01), None
Hoang Tu
Milde & Hoffberg LLP
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