Apparatus for manufacturing porous glass soot body
AssigneeShin-Etsu Chemical Co., Ltd.
InventorYoshinobu Nagashima
Life of this patent
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Abstract
An apparatus for manufacturing a porous glass soot body to be formed into an optical fiber preform includes: a reaction chamber; a burner to form the porous glass soot body by depositing glass particles onto a seed rod hung inside the reaction chamber; and a heat-blocking element filling a gap between the burner and an opening for inserting the burner into the reaction chamber. A purpose is to prevent damage to the burner in the apparatus for manufacturing a porous glass soot body. In the manufacturing apparatus, the heat-blocking element may include a fibriform material. Also, in the manufacturing apparatus, the heat-blocking element may include a quartz wool material. Further, in the manufacturing apparatus, the content of iron in the quartz wool material may be 1 ppm or less.
Claims10
An apparatus for manufacturing a porous glass soot body to be formed into an optical fiber preform, the apparatus comprising:
- a reaction chamber;
- a burner to form the porous glass soot body by depositing glass particles onto a seed rod hung inside the reaction chamber;
- and
- a sealing structure including a heat-blocking element and a sealing cover, wherein the heat-blocking element comprises a quartz wool material and fills a gap between the burner and an opening for inserting the burner into the reaction chamber, to block heat between the inside and outside of the reaction chamber, and the sealing cover covers the opening and adheres to an outside surface of the reaction chamber, to provide airtight sealing of the opening.
Dependencies are inferred from the claim text.