Glass manufacturing – Control responsive to condition sensing means – Temperature or heater control
Patent
1992-07-27
1994-04-12
Jones, W. Gary
Glass manufacturing
Control responsive to condition sensing means
Temperature or heater control
651823, 65 993, 651821, 236 15BE, C03B 1818
Patent
active
053021770
ABSTRACT:
In the tin float bath process of flat glass production, proposed automatic recuperative natural gas burners will replace the existing electrical heating elements. The use of natural gas instead of electricity creates a more energy-efficient bath operation, amounting to an approximately seventy percent savings. Control of the burner zones is comparable to that utilized with the replaced electrically heated zones. Combustion air and natural gas are ignited and burned within a heat-radiating chamber. The residue from burnt gases is exhausted externally to the bath and has no contact whatever with the atmosphere inside the bath. Advantages comprise a less complicated installation with minimal maintenance and with little or no replacement parts, all of which contribute to longevity not attained by prior art. Additionally, shutdown of the process is not necessary to remove and replace a possible defective burner, as is required with defective electrical heaters. Only periodic visual inspection is required. Auxiliary burners presently used to preheat the bath are unnecessary prior to the flow of molten glass from the melting tank. The proposed burners will fulfill this function before continuing with the process heating to the point required for maintaining the temperature profile of the tin float bath.
REFERENCES:
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patent: 1864087 (1932-06-01), Mooman
patent: 2004916 (1935-06-01), Fitch
patent: 3083551 (1963-04-01), Pilkington
patent: 3332763 (1967-07-01), Basler et al.
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Handbook of Glass Manufacture, vol. II, 3rd Edition, pp. 714-712 thru 714-721.
The Glass Industry Magazine, 1980 April Issue; pp. 18, 20, 22; Article "Float Glass Production: Pilkington vs PPG", by Ronald a McCauley, Rutgers University.
A Review Lecture, "The Float Glass Process," by L. A. B. Pilkington, Delivered Feb. 13, 1949.
Gessler Herbert A.
Gessler Matthew A.
Gessler, II Herbert A.
Griffin Steven P.
Jones W. Gary
Ruano William J.
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