Selective aerosol particle collecting method and device, according to particle size

US10814335B2 · kind B2 · utility

Assignee

• COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

• Simon Clavaguera · Alénya, FR
• Arnaud Guiot · Saint-Égrève, FR
• Michel Pourprix · Auch, FR
• Nicolas Daniel · Paris, FR

Key dates

• Filing date: Jul 28, 2016
• Grant date: Oct 27, 2020
• Expiry date: Jul 9, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B03C3/47
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention relates to a method and device for collecting particles which may be present in an aerosol. The invention consists in electrostatically collecting all the particles in an aerosol, but uncoupling mechanisms of particle charging by unipolar ion diffusion, for charging then collecting the finest particles, from particle charging by a corona effect electrical field, for charging then collecting the biggest particles in a different collection zone from the collection zone for the finest particles. The invention also relates to the use of such a device as ionisation chamber or for evaluating the exposure of workers or consumers to nanoparticles.