초록 ▼

Quenching apparatus (12) for use in glass heat treatment apparatus comprises a plurality of air flow amplifiers (32) carried on manifolds (26, 28) and arranged in arrays to direct cooling air onto both surfaces of glass (16) being treated. Compressed air is supplied to the manifolds (26, 28) from ai

Quenching apparatus (12) for use in glass heat treatment apparatus comprises a plurality of air flow amplifiers (32) carried on manifolds (26, 28) and arranged in arrays to direct cooling air onto both surfaces of glass (16) being treated. Compressed air is supplied to the manifolds (26, 28) from air receivers (22) charge by a compressor (20) the compressed air flow being controlled by a control valve (24). Air flow received by the air flow amplifiers (32) from the manifolds (26, 28) is amplified to supply a flow of cooling air directed towards the sheet of glass (16). The air flow amplifiers (32) may be air ejectors. A furnace (10) is provided to heat the glass (16) and a conveyor is provided to carry the glass (16) from the furnace (10) to the quenching apparatus.

대표청구항 ▼

Apparatus for quenching a sheet of glass undergoing heat treatment comprising an array of air ejectors forming quench nozzles which in use direct jets of air at the surface of the glass, the ejectors each comprise a main nozzle inlet, a throat and nozzle outlet, an annular slot around an inlet regio

Apparatus for quenching a sheet of glass undergoing heat treatment comprising an array of air ejectors forming quench nozzles which in use direct jets of air at the surface of the glass, the ejectors each comprise a main nozzle inlet, a throat and nozzle outlet, an annular slot around an inlet region of the throat being arranged to receive a relatively small flow of high pressure motivating air from a source of compressed air whereby to cause ambient air to become entrained into said main nozzle inlet and a relatively large flow of high velocity air thereby to be discharged through the nozzle outlet on to the glass.