Patent ID: 8720229
Filing Date: 2014-05-13
Classification: C03B

Abstract:
1. A vacuum degassing apparatus comprising: a vacuum degassing vessel providing a molten glass flow path of a molten glass, the molten glass flow path having a first portion, a wide portion and a second portion; an uprising pipe connected with the vacuum degassing vessel in the first portion; and a downfalling pipe connected with the vacuum degassing vessel in the second portion, wherein the vacuum degassing vessel provides the molten glass flow path having a breadth W the first portion has a breadth W the vacuum degassing vessel is configured such that a position of a bottom of the molten glass flow path in the portion connected with the uprising pipe and a position of a bottom of the molten glass flow path in the portion connected with the downfalling pipe are lower than a position of a bottom of the molten glass flow path in the wide portion, the breadth W