| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a glass outflow device including a diameter enlarged portion at a lower end of a pipe, capable of suppressing occurrence of a single flow of molten glass.SOLUTION: A glass outflow device 1 includes a pipe which flows out molten glass. The pipe includes a constant diameter portion 6 of which the inner diameter constantly extends in a vertical direction and a diameter enlarged portion 8 having a shape in which the inner diameter continuously extends and enlarges toward a lower end, both of which are formed in a glass flow passage 2 in which the molten glass flows. A diameter reduced portion 10 of which the inner diameter reduces toward an upper end is formed on the inner surface of the lower end edge of the diameter enlarged portion 8.</p> |
