发明名称 |
METHOD AND BURNER FOR MANUFACTURING A GLASS OPTICAL FIBRE PREFORM BY VAPOUR DEPOSITION |
摘要 |
A method is disclosed for feeding a flow of gas to a burner for manufacturing an optical fibre preform, said burner comprising: a plurality of coaxial tubes, each two adjacent coaxial tubes defining an annular channel between themselves; an annular gas distribution chamber at one extremity of said annular channels and in fluid communication therewith, said annular distribution chamber being delimited in the radial direction by an inner and an outer surface; said method comprising introducing the flow of gas into the distribution chamber so that the direction of its radially outermost portion is tangential to the radially outer surface of the distribution chamber. The method allows obtaining a better gas velocity distribution in said annular channels. A burner for performing said method is also disclosed. |
申请公布号 |
US2009325111(A1) |
申请公布日期 |
2009.12.31 |
申请号 |
US20090503578 |
申请日期 |
2009.07.15 |
申请人 |
PRYSMIAN CAVI E SISTEMI ENERGIA S.R.L. |
发明人 |
ROBA GIACOMO STEFANO;VERONELLI FRANCO;NUTINI MASSIMO |
分类号 |
F23D14/32;C03B19/14;C03B37/014;F23D14/24;F23L7/00 |
主分类号 |
F23D14/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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