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    • 19. 发明专利
    • HEATER FOR FRONT END OF PIPE OF FUSED GLASS FLOW RATE CONTROLLER
    • JPH101318A
    • 1998-01-06
    • JP17744496
    • 1996-06-18
    • OHARA KK
    • ENOMOTO MASAOTAKISHIMA EISUKE
    • C03B5/26C03B7/096
    • PROBLEM TO BE SOLVED: To prevent the occurrence of devitrification and to enable the outflow of fused glass having the flow rate and viscosity adequate for molding by enclosing the front end of a pipe with a cylindrical cover opened at its bottom end and disposing a ring burner in proximity to the circumference of the cover. SOLUTION: The fused glass flow 17' controlled in the flow rate and the viscosity is made to flow out of an outflow port 19. At this time, a gaseous mixture composed of oxygen and butane is supplied from gas supply pipes 3a, 3b to the ruing burner 2 to burn the gas and to heat the cover 1 and collar- like members 7a, 7b from multiple directions. The oxygen and the butane are preferably mixed and supplied while the respective flow rates are controlled by a flow meter and a flow rate control valve. Cooling water is supplied from a cooling water supply pipe 5 to a water cooling pipe 4 clearing the burning of the gas and the cooling water is discharged from a cooling water discharge pipe 6 to cool the ring burner 2 by the water cooling pipe 4, by which the backfire by the overheating of the ring burner is prevented.