Method and an apparatus for the treatment of components by a gas mixture
US5938866A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1998 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Mar 25, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D1/773
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An apparatus for the treatment of components by means of a gas mixture, comprising mainly a first light gas and minor amounts of a second gas being heavier than the first gas, has a treatment chamber (10) in which the treatment occurs and a concentration, and purification device (19, 29, 30) in which the gas mixture is concentrated and purified to increase the concentration of the first gas. The treatment chamber (10) comprises an outlet member (19) provided in an upper part of the treatment chamber (10) and means (14, 15) being arranged to move the gas mixture upwardly and out through the outlet member (19). Said means may comprise an inlet member (14) provided in a lower part of the treatment chamber (10) and arranged to supply additional gas and to admit a laminar inward flow of said additional gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.