Aerosol sampling device

The aerosol sampling device with a straight conduit and parallel collectors enables accurate, simultaneous measurement of aerosol concentration in ventilation ducts, addressing the limitations of existing methods by ensuring reliable and undisturbed flow.

FR3168970A1Pending Publication Date: 2026-05-29INSTITUT DE RADIOPROTECTION & DE SURETE NUCLEAIRE
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Patent Information

Application Number
FR2024013122
Authority / Receiving Office
FR · FR
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing methods for measuring aerosol concentration in ventilation ducts are either based on strong assumptions about the stationary nature of the flow and concentration over time or produce inaccurate measurements due to the use of sampling systems with bent parts that cause aerosol loss.

Method used

An aerosol sampling device comprising a straight conduit with parallel collectors, each with a nozzle, tube, and filter, connected via a vacuum pump, allowing isokinetic sampling and simultaneous measurement at multiple points without disrupting the flow.

Benefits of technology

The device provides reliable and simultaneous measurement of aerosol concentration at different points in a duct, minimizing flow disruption and ensuring accurate homogeneity assessment.

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Abstract

Aerosol sampling device (1) comprising: - a conduit (3), - several collectors (5) in fluidic communication with the conduit, each collector extending along a collecting direction (A) and comprising a nozzle (7), a tube (9), a filter (10) configured to capture aerosols, a neck (12) configured to allow critical fluid flow in the collector, each tube having an inlet and an outlet and being straight between the inlet and outlet, and - a vacuum pump (14) fluidically connected to the collectors via the conduit. Figure to be published for the abstract: Figure 4
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Citation Information

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