Apparatus for sampling airborne particles

ES3073261T3Undetermined Publication Date: 2026-07-09CONSEJO SUPERIOR DE INVESTIGACIONES CIENTÍFICAS (50 00)
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Patent Information

Authority / Receiving Office
ES · ES
Patent Type
Patents
Current Assignee / Owner
CONSEJO SUPERIOR DE INVESTIGACIONES CIENTÍFICAS (50 00)
Filing Date
2023-02-22
Publication Date
2026-07-09

AI Technical Summary

Technical Problem

Current air samplers struggle to efficiently capture ultrafine particles, viruses, and pathogens smaller than 1 micron due to their low inertial forces and viscous forces of air preventing effective collection, particularly in cyclone and impinger devices, and existing methods require long sampling times.

Method used

A method and apparatus using a cone-shaped jet of fog with nano-sized liquid droplets to aggregate air-borne particles, drawing in surrounding air and promoting particle capture within liquid droplets, which are then collected by impaction on a funnel surface, allowing for rapid sampling of large volumes of air.

Benefits of technology

Enables fast sampling of ultrafine particles and pathogens in a liquid suspension, increasing efficiency and reducing sampling time to less than 1 second, with the capability to capture up to 1000 times more viable viruses than PTFE filters in a comparable time frame.

✦ Generated by Eureka AI based on patent content.

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Abstract

An apparatus (10) for sampling suspended particles, comprising a nozzle (1) used to generate a mist jet (20) containing gas and liquid droplets of varying sizes. The mist jet (20) is formed by the nozzle such that particles present in the surrounding air are drawn into the jet and coalesce with the liquid droplets within it. A sample collection surface (30) is located opposite and separated from the nozzle outlet. Preferably, the sample collection surface is sloped so that the liquid sample is gravity-fed from the collection surface into a vial or other liquid sample container. Within the mist jet and on the sample collection surface, the liquid droplets coalesce to form larger droplets that can be collected in the liquid sample container (32).
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