Glass manufacturing – Means providing special atmosphere
Patent
1995-11-02
1998-01-20
Griffin, Steven P.
Glass manufacturing
Means providing special atmosphere
65181, 65 601, 65 605, 65 608, 65 602, 118718, 118326, 427166, 427255, 4272551, C03C 1700, C23C 1600
Patent
active
057097267
ABSTRACT:
A device for the formation, by pyrolysis, of a coating on a face of a hot glass substrate includes a vault; support elements for conveying the substrate along a path through a coating chamber defined between the main vault and the substrate; elements for supplying and distributing gaseous reagent to the coating chamber; elements for discharging exhaust gas from the coating chamber; and a plurality of struts. The elements for supplying and distributing gaseous reagent to the coating chamber include an ejection nozzle having defined therein a slot which opens directly into the coating chamber, has opposing longitudinal internal walls, extends transverse to the path of the substrate, and has a length which is substantially equal to the coating width of the coating formed. The plurality of struts are positioned at spaced intervals and connect the opposing walls of the slot together to thereby maintain the walls of the slot in substantially parallel disposition. The ejection nozzle has longitudinal internal walls which define a continuous convergent path which terminates at and communicates with the slot and has an angle of convergence (.alpha.), thereby causing the flow of gaseous reagent to conform to the slot, the angle of convergence (.alpha.) of the convergent path being up to but not greater than 14.degree. at any point. Alternatively, instead of a plurality of struts, the device may include elements for trapping stray deposits including at least one metal bar disposed below the vault of the coating chamber.
REFERENCES:
patent: 3888649 (1975-06-01), Simhan
patent: 4123244 (1978-10-01), Leclercq et al.
patent: 4642130 (1987-02-01), Hargreaves et al.
patent: 4900110 (1990-02-01), Sleighter
patent: 5122394 (1992-06-01), Lindner
Franceschi Secondo
Terneu Robert
Glaverbel
Griffin Steven P.
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