Channel induction furnace bushing cap cooling device
US5222097A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1991 |
| Grant date | Jun 22, 1993 |
| Priority date | — |
| Expiry date | Dec 6, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B6/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bushing cap used to close a gap in a liquid cooled bushing which surrounds a coil contained in a channel induction furnace. The coil, bushing and bushing cap is further surrounded by a thin refractory layer which is further surrounded by a molten metal loop. The bushing cap and bushing are liquid cooled to maintain a substantial uniform thermal gradient about the thin refractory layer surrounding the bushing and bushing cap. Preferably, this is accomplished by way of a bushing cap having a cooling member attached to a cover and mounted within the bushing gap. A cooling fluid is passed through both the cooling member of the bushing cap and cooling channels within the bushing to maintain a substantial uniform thermal gradient about the thin refractory layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.