GB1521231A - Induction furnace - Google Patents

Induction furnace

Info

Publication number
GB1521231A
GB1521231A GB16677A GB16677A GB1521231A GB 1521231 A GB1521231 A GB 1521231A GB 16677 A GB16677 A GB 16677A GB 16677 A GB16677 A GB 16677A GB 1521231 A GB1521231 A GB 1521231A
Authority
GB
United Kingdom
Prior art keywords
chamber
khz
jan
tubes
silica
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.)
Expired
Application number
GB16677A
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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 Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Publication of GB1521231A publication Critical patent/GB1521231A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D11/00—Arrangement of elements for electric heating in or on furnaces
    • F27D11/06—Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
    • 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
    • C03B2205/62—Heating means for drawing
    • C03B2205/64—Induction furnaces, i.e. HF/RF coil, e.g. of the graphite or zirconia susceptor type
    • 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
    • C03B2205/70—Draw furnace insulation

Abstract

1521231 Induction heated furnaces COMPAGNIE GENERALE D'ELECTRICITE SA 5 Jan 1977 [22 Jan 1976] 166/77 Heading F4B [Also in Division H5] Induction furnace for use at high temperatures (e.g. 2,000‹ C.) has a tubular (graphite) susceptor 1 as heating element protected in use by inert gas in a toroidal chamber 22, the gas being supplied at such a pressure that it escapes through the touching surfaces (e.g. 17) between the coaxial plates 8, 18 and tubes 6, 21 defining the chamber, the plates having openings 14, 19 communicating with the bore of the inner tube 21 for passage of objects to be heated. Thermal insulation is provided by porous alumina tube 16. Chamber defining elements 8, 18, 6, 21 and susceptor supports 11, 12 are of silica. Current at 600 KHz or 20 KHz and 4 Kw passes through water-cooled tubular coil 2. The furnace may be used for drawing optical fibres or for vapour phase deposition on silica tubes.
GB16677A 1976-01-22 1977-01-05 Induction furnace Expired GB1521231A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7601672A FR2339148A1 (en) 1976-01-22 1976-01-22 HIGH FREQUENCY ELECTRIC OVEN

Publications (1)

Publication Number Publication Date
GB1521231A true GB1521231A (en) 1978-08-16

Family

ID=9168231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16677A Expired GB1521231A (en) 1976-01-22 1977-01-05 Induction furnace

Country Status (6)

Country Link
BE (1) BE850063A (en)
DE (1) DE2701646A1 (en)
FR (1) FR2339148A1 (en)
GB (1) GB1521231A (en)
IT (1) IT1077118B (en)
NL (1) NL7700707A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1489052A2 (en) * 2003-06-13 2004-12-22 Photonium OY Furnace having thermal insulation for drawing optical fibres from a preform
US7814767B2 (en) 1999-05-10 2010-10-19 Prysmian Cavi E Sistemi Energia S.R.L. Method and induction furnace for drawing large diameter preforms to optical fibres
CN102618703A (en) * 2012-03-26 2012-08-01 宝山钢铁股份有限公司 Method and device for rapid high-temperature heating of plates
CN102927816A (en) * 2012-11-18 2013-02-13 昆山市大金机械设备厂 Induction heating furnace
FR3056713A1 (en) * 2016-09-27 2018-03-30 Centre Nat Rech Scient INDUCTION MACHINE ALL METAL AT HIGH TEMPERATURE, INTENDED TO MELT SAMPLES OF MINERALS AND / OR ROCKS FOR THE EXTRACTION OF GAS UNDER ULTRAVIDE
IT201800003327A1 (en) * 2018-03-07 2019-09-07 Technique Eng Di Arturo Busin & C S N C EQUIPMENT TO PERFORM THE ANNEALING OF CARTRIDGE CASES FOR FIREARMS
CN110963678A (en) * 2019-12-12 2020-04-07 深圳市赢合技术有限公司 Rapid-heating curved glass hot bending device and method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2386004B2 (en) * 1977-03-29 1980-05-23 Comp Generale Electricite HIGH FREQUENCY ELECTRIC OVEN
DE2818550C2 (en) * 1977-04-30 1990-03-29 Sumitomo Electric Industries, Ltd., Osaka Apparatus for drawing optical fibers
NL8403380A (en) * 1984-11-07 1986-06-02 Philips Nv METHOD AND APPARATUS FOR COMPACTING A PREFORMED POROUS BODY OF MATERIAL, THE MAIN COMPONENT OF WHICH IS SIO2.
FR2627048B1 (en) * 1988-02-10 1994-05-06 Electricite De France TANK FOR HEATING LIQUID BY INDUCTION
US5260538A (en) * 1992-04-09 1993-11-09 Ethyl Corporation Device for the magnetic inductive heating of vessels
DE19900375A1 (en) 1999-01-08 2000-07-13 Alcatel Sa Device for pulling a fiber

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7814767B2 (en) 1999-05-10 2010-10-19 Prysmian Cavi E Sistemi Energia S.R.L. Method and induction furnace for drawing large diameter preforms to optical fibres
EP1489052A2 (en) * 2003-06-13 2004-12-22 Photonium OY Furnace having thermal insulation for drawing optical fibres from a preform
EP1489052A3 (en) * 2003-06-13 2006-04-26 Photonium OY Furnace having thermal insulation for drawing optical fibres from a preform
CN102618703A (en) * 2012-03-26 2012-08-01 宝山钢铁股份有限公司 Method and device for rapid high-temperature heating of plates
CN102927816A (en) * 2012-11-18 2013-02-13 昆山市大金机械设备厂 Induction heating furnace
FR3056713A1 (en) * 2016-09-27 2018-03-30 Centre Nat Rech Scient INDUCTION MACHINE ALL METAL AT HIGH TEMPERATURE, INTENDED TO MELT SAMPLES OF MINERALS AND / OR ROCKS FOR THE EXTRACTION OF GAS UNDER ULTRAVIDE
WO2018059902A1 (en) * 2016-09-27 2018-04-05 Centre National De La Recherche Scientifique High-temperature all-metal induction furnace, intended to melt samples of minerals and/or rocks for extracting gases under ultra-high vacuum
US11421936B2 (en) 2016-09-27 2022-08-23 Centre National De La Recherche Scientifque High-temperature all-metal induction furnace, intended to melt samples of minerals and/or rocks for extracting gases under ultra-high vacuum
IT201800003327A1 (en) * 2018-03-07 2019-09-07 Technique Eng Di Arturo Busin & C S N C EQUIPMENT TO PERFORM THE ANNEALING OF CARTRIDGE CASES FOR FIREARMS
CN110963678A (en) * 2019-12-12 2020-04-07 深圳市赢合技术有限公司 Rapid-heating curved glass hot bending device and method

Also Published As

Publication number Publication date
NL7700707A (en) 1977-07-26
FR2339148B1 (en) 1980-04-11
IT1077118B (en) 1985-05-04
FR2339148A1 (en) 1977-08-19
BE850063A (en) 1977-07-04
DE2701646A1 (en) 1977-07-28

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee