Aerosol particle sensor with axial fan
US7667839B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2006 |
| Grant date | Feb 23, 2010 |
| Priority date | — |
| Expiry date | Mar 30, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/1493
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A particle sensor for optically detecting an unconstrained particle suspended in a flowing gas includes a sample chamber having a gas inlet and a gas outlet; a gas flow system for flowing said gas from said gas inlet through said sample chamber to said gas outlet, a source of light; an optical system directing said light through said sample chamber, an optical collection system located to collect light scattered by said particles in the gas, and a detection system located to detect the collected light. The total pressure drop through said gas flow system is 3 inches of water or less. The gas flow system includes an axial fan, which may be a high static pressure fan or a counter-rotating fan. In a 1.0 CFM system, the gas inlet nozzle has an area of 25 square millimeters or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.