Centrifugal evaporator-concentrator for concentrating specimens by evaporation of the solvent
US5217572A · kind A · utility
18Cited by
11References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1991 |
| Grant date | Jun 8, 1993 |
| Priority date | — |
| Expiry date | Nov 12, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S203/19
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The centrifugal evaporator-concentrator includes a central tubular pivot (18) surmounted by a nozzle (35) and constituting the pivot axis of a rotor (9) rotating in a vessel (8) closed by a cover (11). With the rotor rotating in the partial vacuum created by a vacuum pump (33), a small quantity of gas or air is temporarily and periodically admitted into the vessel, this gas being heated by a heating resistor (38) inside the vessel for the purpose of heating by conduction the specimens to be concentrated and of accelerating the rate of evaporation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.