GB846379A - Improvements in electrical vacuum furnaces - Google Patents
Improvements in electrical vacuum furnacesInfo
- Publication number
- GB846379A GB846379A GB36158/58A GB3615858A GB846379A GB 846379 A GB846379 A GB 846379A GB 36158/58 A GB36158/58 A GB 36158/58A GB 3615858 A GB3615858 A GB 3615858A GB 846379 A GB846379 A GB 846379A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shield
- strip
- insulating material
- foil
- parts
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
-
- 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
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/02—Induction heating
- H05B6/22—Furnaces without an endless core
- H05B6/24—Crucible furnaces
- H05B6/26—Crucible furnaces using vacuum or particular gas atmosphere
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
846,379. Induction vacuum furnaces. ALLMANNA SVENSKA ELEKTRISKA A. B. Nov. 11, 1958 [Nov. 19, 1957], No. 361,58/58. Class 39(3). Corona which occurs at the live parts of an electric vacuum furnace is reduced by electrically shielding these parts. An induction coil of a furnace comprises a tubular copper conductor 5 surrounded by an electrically insulating material 6 which is itself surrounded by a conductive shield 7 connected to earth. The shield is divided into sections by gaps which are covered by layers of insulating material partly covered by metal strips 10 preferably so that one edge of the strip is in contact with the underlying section of the shield and the other edge of the strip is insulated from the shield. The shield may alternatively be formed from a. strip of insulating material provided on one side with a conductive layer, e.g. metal foil, the strip being wound on the parts to be protected and being wider than the foil so that adjacent turns of the foil do not come into contact with each other. The conductive shield material is suitably non-magnetic.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE846379X | 1957-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB846379A true GB846379A (en) | 1960-08-31 |
Family
ID=20358511
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB36158/58A Expired GB846379A (en) | 1957-11-19 | 1958-11-11 | Improvements in electrical vacuum furnaces |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB846379A (en) |
-
1958
- 1958-11-11 GB GB36158/58A patent/GB846379A/en not_active Expired
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