Conduit for molten glass, connecting conduit for molten glass and vacuum degassing apparatus
US7380416B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2005 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Apr 15, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B5/2252
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a A metal conduit for molten glass and a vacuum degassing apparatus are disclosed, which are capable of coping with extension and contraction, and vibration. By disposing at least one convex portion 20 so to have a height of 4 mm or above in a radial direction and continuously extend in a peripheral direction, it is possible to absorb thermal expansion and contraction without changing the entire length of the metal conduit 10 and to suppress from the metal conduit 10 from vibrated even when molten glass 121 is conveyed by the metal conduit. By employing the metal conduit 10 stated earlier in an upstream conveying pipe 130A, an uprising pipe 122U, a vacuum degassing vessel 120, a downfalling pipe 122L, a downstream conveying pipe 130B or the like in a vacuum degassing apparatus 30, it is possible to cope with thermal expansion and contraction, and vibration caused when conveying molten glass 121.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.