Glass manufacturing – Processes – With measuring – sensing – inspecting – indicating – or testing
Patent
1975-10-16
1977-06-07
Kellogg, Arthur D.
Glass manufacturing
Processes
With measuring, sensing, inspecting, indicating, or testing
65161, 65162, 65DIG13, C03B 524
Patent
active
040280837
ABSTRACT:
A furnace, which includes a melting and refining tank and a forehearth, is divided into a plurality of zones or regions. Each of the zones is provided with means for sensing temperature within the zone and a means for heating the zone. Means is also provided for measuring the individual heat input into the furnace of the heating means in each of the zones. When changes in temperatures are required, the temperatures in the different zones of the furnace are controlled by adjusting the heat input of the heating means in at least one of the zones to cause the temperatures in each of the zones where changes in temperature are required to approach desired temperatures. The adjustment is made in response to the last sensed temperature in a time period for each of the zones and in response to at least some of the temperatures sensed and the heat inputs measured in each of the zones during that time period so as to compensate for thermal lags within the furnace and the effect of heat input in any one of the zones on the temperatures in other of the zones.
REFERENCES:
patent: 1961894 (1934-06-01), Wadman et al.
patent: 3573017 (1971-03-01), Griem, Jr.
patent: 3779731 (1973-12-01), Pollock
patent: 3915682 (1975-10-01), Chotin et al.
Border Gary Clayton
Patznick Richard Arthur
Johns-Manville Corporation
Kellogg Arthur D.
Kelly Joseph J.
Krone Robert M.
Miller John H.
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