JPS6418934A - Optical fiber drawing furnace - Google Patents

Optical fiber drawing furnace

Info

Publication number
JPS6418934A
JPS6418934A JP17544087A JP17544087A JPS6418934A JP S6418934 A JPS6418934 A JP S6418934A JP 17544087 A JP17544087 A JP 17544087A JP 17544087 A JP17544087 A JP 17544087A JP S6418934 A JPS6418934 A JP S6418934A
Authority
JP
Japan
Prior art keywords
optical fiber
furnace
gas
hole
inert gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP17544087A
Other languages
Japanese (ja)
Other versions
JPH0784333B2 (en
Inventor
Katsuji Sakamoto
Ichiro Yoshimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP17544087A priority Critical patent/JPH0784333B2/en
Publication of JPS6418934A publication Critical patent/JPS6418934A/en
Publication of JPH0784333B2 publication Critical patent/JPH0784333B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
    • C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
    • C03B37/029—Furnaces therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/82—Means for sealing the fibre exit or lower end of the furnace
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2205/00—Fibre drawing or extruding details
    • C03B2205/60—Optical fibre draw furnaces
    • C03B2205/90—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles
    • C03B2205/98—Manipulating the gas flow through the furnace other than by use of upper or lower seals, e.g. by modification of the core tube shape or by using baffles using annular gas inlet distributors

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)

Abstract

PURPOSE:To improve flexural strength of optical fiber and life of the furnace, by introducing an inert gas dropping in a drawing furnace into an inner peripheral face side of a bottom diffuser, exhausting the gas by suction and further sucking the gas in the midst of a hole through which optical fiber is passed. CONSTITUTION:An exhaust hole 15 of an inert gas which is fed to a top diffuser 6 and drops in a drawing furnace 1 is set in an inner peripheral face of a bottom diffuser 10. A small circular hole 21 through which the optical fiber is passed is laid at the central part of the bottom diffuser 10, a suction section is made in the midst of the circular hole 21 and the suction section is connected to an exhaust hole 15 by pumps 25 and 19. Consequently, the inert gas containing dust is made to flow in the direction to separate the gas from the optical fiber and discharged from the exhaust hole 15. The open air which is made to flow through the small circular hole 21 into the furnace 1 is prevented from entering. Consequently, adhesion of dust generated in the furnace to the optical fiber, oxidation and deterioration of the optical fiber and a core pipe can be prevented.
JP17544087A 1987-07-13 1987-07-13 Optical fiber drawing furnace Expired - Lifetime JPH0784333B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17544087A JPH0784333B2 (en) 1987-07-13 1987-07-13 Optical fiber drawing furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17544087A JPH0784333B2 (en) 1987-07-13 1987-07-13 Optical fiber drawing furnace

Publications (2)

Publication Number Publication Date
JPS6418934A true JPS6418934A (en) 1989-01-23
JPH0784333B2 JPH0784333B2 (en) 1995-09-13

Family

ID=15996125

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17544087A Expired - Lifetime JPH0784333B2 (en) 1987-07-13 1987-07-13 Optical fiber drawing furnace

Country Status (1)

Country Link
JP (1) JPH0784333B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5637130A (en) * 1993-07-13 1997-06-10 Sumitomo Electric Industries, Inc. Method and furnace for drawing optical fibers
EP0893416A1 (en) * 1997-07-24 1999-01-27 Alcatel Upper gas-diffuser for an optical fibre drawing apparatus using a preform
US6192715B1 (en) 1997-07-24 2001-02-27 The Furukawa Electric Co., Ltd. Furnace for forming optical fiber
CN108083656A (en) * 2017-12-29 2018-05-29 通鼎互联信息股份有限公司 A kind of nitrogen guiding device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5637130A (en) * 1993-07-13 1997-06-10 Sumitomo Electric Industries, Inc. Method and furnace for drawing optical fibers
EP0893416A1 (en) * 1997-07-24 1999-01-27 Alcatel Upper gas-diffuser for an optical fibre drawing apparatus using a preform
FR2766480A1 (en) * 1997-07-24 1999-01-29 Alsthom Cge Alcatel HIGH GAS DIFFUSER IN A FIBER DEVICE OF AN OPTICAL FIBER PREFORM
US6192715B1 (en) 1997-07-24 2001-02-27 The Furukawa Electric Co., Ltd. Furnace for forming optical fiber
CN108083656A (en) * 2017-12-29 2018-05-29 通鼎互联信息股份有限公司 A kind of nitrogen guiding device
CN108083656B (en) * 2017-12-29 2023-08-22 通鼎互联信息股份有限公司 Nitrogen gas guiding device

Also Published As

Publication number Publication date
JPH0784333B2 (en) 1995-09-13

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