Apparatus for supercritical cleaning
US5526834A · kind A · utility
79Cited by
19References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1994 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Aug 17, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB08B7/0021
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus for precision cleaning with carbon dioxide includes a pressure vessel having a removable cleaning drum with a sanitized work zone. The sanitized work zone is defined by an impermeable drum body having a removable exit filter to ensure that circulating cleaning fluid does not redeposit contaminants on the parts. The carbon dioxide is maintained in liquid form in the storage vessel, raised above its critical temperature by the preheater, pumped into the pressure vessel to achieve critical pressure, circulated through the work zone for a predetermined period of time, and removed through the let-down valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.