Glass manufacturing – Product cooling means – With preceding reheater
Patent
1975-01-20
1976-02-03
Kellogg, Arthur D.
Glass manufacturing
Product cooling means
With preceding reheater
65273, C03B 2700
Patent
active
039362914
ABSTRACT:
A glass tempering blasthead including a pair of plenum chambers with opposed banks of nozzles for directing air or other fluid flow onto opposite surfaces of a sheet of glass disposed therebetween for quenching or cooling the glass subsequent to heat treatment of the glass. Each plenum chamber has a fluid flow distributing assembly including a pair of complementary sheet members. Each of the sheet members is stamped so that when secured in complementary relationship with the other sheet member a series of nozzles are formed having flared inlets communicating with a transverse feed passage for directing flow from the plenum chamber into the flared inlets of the nozzles. When the glass sheets are disposed horizontally between the opposed nozzles, the nozzles have their axes disposed parallel to the vertical. When the glass sheets are disposed vertically between the opposed nozzles, the nozzles are inclined downwardly to drive the heat and spent air downwardly off the bottom of the glass sheet and to better maintain a pressure balance on the opposite surfaces of the glass sheet. Further, the nozzles located adjacent the upper ends of the plenum chambers are inclined downwardly at a greater angle than the remaining nozzles to direct the flow therefrom away from the carrier of the glass sheet to reduce the likelihood of heat distortion of the carrier. The vertically disposed blasthead is supported in such a manner that it reciprocates during a quenching operation to apply uniform cooling temperature to the opposite surfaces of the sheet. In order to prevent contamination of the fluid flow from the nozzles, a dry, rolling seal is provided between the plenum chamber and the supply ducts to the plenum chambers.
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