Aerosol high efficiency sampling device and method

CN122303014APending Publication Date: 2026-06-30CHINESE ACAD OF INSPECTION & QUARANTINE +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINESE ACAD OF INSPECTION & QUARANTINE
Filing Date
2026-03-16
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing aerosol sampling technologies suffer from low airflow, limited contact area between aerosols and the sampling liquid, and insufficient sampling efficiency, making it difficult to achieve high-throughput and high-efficiency microbial aerosol sampling.

Method used

A U-shaped ventilation duct is filled with sampling solution, and the evaporation-condensation cycle is controlled by heating TEC and cooling TEC to achieve high airflow and large-area contact. Combined with a temperature control component, the evaporation and condensation rates are dynamically adjusted. A sterile phosphate buffer solution and glycerol mixture is used as the sampling solution.

Benefits of technology

Without reducing airflow, it significantly improves aerosol capture efficiency, especially for small-diameter particles, maintains microbial activity, and enhances detection sensitivity and applicability.

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Abstract

This invention relates to a high-efficiency aerosol sampling device and method, belonging to the fields of environmental monitoring and biosafety technology. It includes a U-shaped ventilation tube with a flat bottom, an air inlet at the top of the left longitudinal tube, and an air outlet at the top of the right longitudinal tube. A fan is installed at the air inlet to achieve high-flow-rate air introduction. The inner side of the flat section of the U-shaped ventilation tube is filled with sampling liquid, and a temperature control component is installed on the outer side of the flat section. This invention provides a device and method that can significantly increase the contact area through an evaporation-condensation cycle without reducing airflow, achieving high-throughput and high-efficiency microbial aerosol sampling. It solves the problems of low airflow, limited contact area between aerosol and sampling liquid, and insufficient sampling efficiency in existing aerosol sampling technologies.
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