| 摘要 |
PROBLEM TO BE SOLVED: To provide an apparatus for clarifying a glass melt which is a type of apparatus in which the flow rate profile is controlled so that gas bubbles in the glass melt are removed in a relatively short clarifying section in comparison with a clarifying section relating to a prior art. SOLUTION: The apparatus for clarifying the glass melt has a clarifying unit, which includes a horizontally extended clarifying section for removal of rising gas bubbles from the glass melt. So that the clarifying section can be shortened in contrast to the clarifying section in an apparatus with an open channel flow, the clarifying section is formed so that the glass melt flow rate is higher over a substantial lengthwise portion of it near its bottom and lower near the surface of the glass melt in comparison to the corresponding flow rates in an open channel flow for the same throughput. The clarifying section is advantageously at least partially covered with a fire resistant cover, which comes into contact with the glass melt flowing through it and has at least one opening through which gas bubbles can escape. In addition the clarifying section may be provided with built-in elements shaped to provide the desired improved flow rate profile for the glass melt. COPYRIGHT: (C)2004,JPO
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