Patent · US Active

Curtain flow design for optical chambers

US11604122B2 · kind B2 · utility

1Cited by
0References
23Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 31, 2019
Grant dateMar 14, 2023
Priority date—
Expiry dateDec 31, 2039

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N2021/151
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Various embodiments include systems and apparatuses for reducing contamination levels within optical chambers of particle-detection instruments. In one embodiment, an apparatus to reduce contamination within an optical chamber of a particle-detection instrument is described. The apparatus includes a plenum chamber to at least partially surround an aerosol-focusing nozzle of the particle-detection instrument and accept a filtered gas flow. A curtain-flow concentrating nozzle is coupled to the plenum chamber to produce a curtain flow into the optical chamber to substantially surround an aerosol flow. Other methods and systems are disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.