| 摘要 |
PROBLEM TO BE SOLVED: To suppress the formation of gaseous inclusions in glass sheets.SOLUTION: There are provided the apparatus and method for controlling the environment (e.g., oxygen, hydrogen, humidity, temperature, gas flow rate, pressure) around one or more vessels 115, 120 and 125 in a glass manufacturing apparatus 100. The apparatus includes a closed-loop control apparatus 144 and a capsule 140 that are used to control the level of hydrogen around the exterior (non glass contact surface) of the vessels 115, 120 and 125 so as to suppress the formation of gaseous inclusions and surface blisters in glass sheets. In addition, the closed-loop control apparatus 144 and capsule 140 can be used to help cool molten glass 114 while the molten glass 114 travels from one vessel to another vessel in the glass manufacturing apparatus 100. Moreover, the closed-loop control apparatus 144 and capsule 140 can be used to maintain an atmosphere with minimal oxygen around the vessels 115, 120 and 125 so as to reduce the oxidation of precious metals on the vessels. |
