Glass manufacturing – Control responsive to condition sensing means
Patent
1985-10-08
1986-11-11
Kellogg, Arthur
Glass manufacturing
Control responsive to condition sensing means
65136, 65162, 65337, 65346, C03B 524
Patent
active
046220593
ABSTRACT:
A temperature control system for a forehearth, said forehearth for thermally conditioning molten glass to be fed to a glassware forming machine, and being divided into a plurality of zones. Each of the forehearth zones is provided with devices for monitoring the temperature of molten glass within the zone, and apparatus for selectively heating the glass. A microprocessor-based time sharing system controls the temperature of the plurality of zones, using adaptive control loops. Each zone is assigned a time period for monitoring temperature and taking appropriate corrective action. Temperature adjustments may be made independently zone-by-zone, or in cooperation, and other physical parameters may be taken into account such as glass viscosity or combustion pressure. Certain time-sharing periods may be associated with monitoring and displaying functions only.
REFERENCES:
patent: 3582310 (1971-06-01), Avery et al.
patent: 3600149 (1971-08-01), Chen et al.
patent: 3915682 (1975-10-01), Chotin
patent: 4028083 (1977-06-01), Patznick et al.
patent: 4375368 (1983-03-01), Stevenson
Emhart Industries Inc.
Kellogg Arthur
Moore Arthur B.
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