FR2374812A1 - Four electrique avec element de resistance en graphite solide en atmosphere inerte - Google Patents
Four electrique avec element de resistance en graphite solide en atmosphere inerteInfo
- Publication number
- FR2374812A1 FR2374812A1 FR7737619A FR7737619A FR2374812A1 FR 2374812 A1 FR2374812 A1 FR 2374812A1 FR 7737619 A FR7737619 A FR 7737619A FR 7737619 A FR7737619 A FR 7737619A FR 2374812 A1 FR2374812 A1 FR 2374812A1
- Authority
- FR
- France
- Prior art keywords
- solid graphite
- inert gas
- electric furnace
- resistance element
- annular part
- 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
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/62—Heating elements specially adapted for furnaces
-
- 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
-
- 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
- F27D11/02—Ohmic resistance heating
-
- 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
- C03B2205/63—Ohmic resistance heaters, e.g. carbon or graphite resistance heaters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Resistance Heating (AREA)
- Furnace Details (AREA)
Abstract
Ce four électrique présente un élément de résistance en graphite solide en atmosphère inerte. Cet élément de résistance C est une petite barre en graphite solide façonnée de façon à présenter une partie pseudo-annulaire CC apte à former ladite zone chaude, et apte à délimiter deux appendices A1, A2 pour l'adduction du courant électrique, raccordes à cette partie pseudo-annulaire CC au moyen de goulots convenables R1, R2 effectués de manière à déterminer une distribution constante de la température dans ladite zone chaude.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT7000576A IT1072240B (it) | 1976-12-17 | 1976-12-17 | Fornace elettrica ad elemento resistivo in grafite solida in atmosfera inerte |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2374812A1 true FR2374812A1 (fr) | 1978-07-13 |
FR2374812B1 FR2374812B1 (fr) | 1980-08-22 |
Family
ID=11313279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7737619A Granted FR2374812A1 (fr) | 1976-12-17 | 1977-12-14 | Four electrique avec element de resistance en graphite solide en atmosphere inerte |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2374812A1 (fr) |
IT (1) | IT1072240B (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0311761A2 (fr) * | 1987-10-16 | 1989-04-19 | Bodenseewerk Perkin-Elmer Gmbh | Four tubulaire pour l'atomisation électrothermique des échantillons en spectroscopie d'absorption atomique |
EP0752393A1 (fr) * | 1995-07-05 | 1997-01-08 | Sumitomo Electric Industries, Ltd | Four pour l'étirage d'une fibre optique à partir d'une préforme |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR512034A (fr) * | 1919-03-17 | 1921-01-13 | Morgan Crucible Co | Perfectionnements aux fours à chauffage électrique |
DE636836C (de) * | 1934-01-13 | 1936-10-16 | Ernst Justus Kohlmeyer Dr Ing | Elektrischer Widerstandsofen mit zylindrischem Heizraum |
FR1256876A (fr) * | 1960-05-12 | 1961-03-24 | Richard D Brew And Company | Dispositif de chauffage électrique |
FR1526759A (fr) * | 1963-01-29 | 1968-05-31 | Pechiney Prod Chimiques Sa | Résistor et dispositif de fixation pour résistor de four électrique à résistance fonctionnant sous vide |
US3409728A (en) * | 1966-03-18 | 1968-11-05 | Atomic Energy Authority Uk | Electrical resistance furnaces |
-
1976
- 1976-12-17 IT IT7000576A patent/IT1072240B/it active
-
1977
- 1977-12-14 FR FR7737619A patent/FR2374812A1/fr active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR512034A (fr) * | 1919-03-17 | 1921-01-13 | Morgan Crucible Co | Perfectionnements aux fours à chauffage électrique |
DE636836C (de) * | 1934-01-13 | 1936-10-16 | Ernst Justus Kohlmeyer Dr Ing | Elektrischer Widerstandsofen mit zylindrischem Heizraum |
FR1256876A (fr) * | 1960-05-12 | 1961-03-24 | Richard D Brew And Company | Dispositif de chauffage électrique |
FR1526759A (fr) * | 1963-01-29 | 1968-05-31 | Pechiney Prod Chimiques Sa | Résistor et dispositif de fixation pour résistor de four électrique à résistance fonctionnant sous vide |
US3409728A (en) * | 1966-03-18 | 1968-11-05 | Atomic Energy Authority Uk | Electrical resistance furnaces |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0311761A2 (fr) * | 1987-10-16 | 1989-04-19 | Bodenseewerk Perkin-Elmer Gmbh | Four tubulaire pour l'atomisation électrothermique des échantillons en spectroscopie d'absorption atomique |
EP0311761A3 (en) * | 1987-10-16 | 1990-07-18 | Bodenseewerk Perkin-Elmer Gmbh | Tubular furnace for the electrothermal atomization of samples in atomic absorption spectroscopy |
EP0752393A1 (fr) * | 1995-07-05 | 1997-01-08 | Sumitomo Electric Industries, Ltd | Four pour l'étirage d'une fibre optique à partir d'une préforme |
CN1105089C (zh) * | 1995-07-05 | 2003-04-09 | 住友电气工业株式会社 | 光纤拉丝炉 |
US6546760B1 (en) | 1995-07-05 | 2003-04-15 | Sumitomo Electric Industries, Ltd. | Optical fiber drawing furnace with a zig zag heating element |
Also Published As
Publication number | Publication date |
---|---|
IT1072240B (it) | 1985-04-10 |
FR2374812B1 (fr) | 1980-08-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |