Automatic evaporator system
US4604363A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1984 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Oct 18, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25375
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In a microprocessor-controlled evaporation/concentration system, a plurality of sample solutions are automatically successively delivered to an evaporation chamber. Each sample solution is evaporated in successively delivered slug components. The underside of the bottom wall is maintained at a microprocessor-determined constant evaporation temperature by an electrical resistance heater and proportional temperature controller. Pressure in the chamber is maintained substantially on the vapor pressure versus temperature curve of the sample solution, thereby assuring a known evaporation rate. Valving controlled by the microprocessor permits automatic addition of diluent to the chamber. The prepared sample is then automatically transferred to one of multiple storage vials which are brought into successive registration with a syringe needle assembly by means of a rotatable vial storage tray. The microprocessor automatically cleanses the entire flow system with cleansing solution and/or purging gas after each sample has been evaporated/concentrated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.