Focusing particle concentrator with application to ultrafine particles
US8459572B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2010 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jan 15, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Technology is presented for the high efficiency concentration of fine and ultrafine airborne particles into a small fraction of the sampled airflow by condensational enlargement, aerodynamic focusing and flow separation. A nozzle concentrator structure including an acceleration nozzle with a flow extraction structure may be coupled to a containment vessel. The containment vessel may include a water condensation growth tube to facilitate the concentration of ultrafine particles. The containment vessel may further include a separate carrier flow introduced at the center of the sampled flow, upstream of the acceleration nozzle of the nozzle concentrator to facilitate the separation of particle and vapor constituents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.