Single crystal material supplying apparatus and single crystal material supplying method
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United States of America Patent
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Jul 23, 2002
Grant Date -
N/A
app pub date -
Nov 5, 1999
filing date -
Mar 12, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention aims to prevent solidification of a melt in a feeding pipe without providing heating means such as heater or heat keeping means such as heat insulating material on outer periphery of the feeding pipe when the melt is supplied from an auxiliary crucible into a main crucible via the feeding pipe by overflow. At the center of the auxiliary crucible 1 made of quartz, a pipe 1a for feeding the melt from the auxiliary crucible 1 to the main crucible 11 by overflow is formed. When the raw material in the auxiliary crucible is melted, it is designed in such manner that the raw material is not continuously supplied to the auxiliary crucible but it is supplied in such quantity that the melt overflows intermittently into an opening on the upper end of the pipe 1a from the auxiliary crucible 1 into the main crucible 11.
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