Device for refining a glass melt in a low pressure refining chamber connected to a glass melt bath comprises a double tube arrangement for introducing and removing the glass melt consisting of an outer tube and an inner tube

摘要

Device for refining glass melt (2) in low pressure refining chamber (5) connected to glass melt bath (1) comprise double tube arrangement for introducing and removing glass melt consisting of an outer tube (7) and an inner tube (8). Tube (8) forms either the down shaft and free radial chamber (9) between inner and outer tubes, or inner tube forms riser shaft and radial chamber forms down shaft. Preferred Features: The inner tube is coaxially arranged in the outer tube. The tubes have a circular or polygonal cross-section. The inner tube is made from molybdenum and the outer tube is made from platinum or ceramic material.