Microbial aerosol sampler

Abstract

The invention discloses a microbial aerosol sampler. According to the technical scheme, the microbial aerosol sampler comprises a filter assembly, a fan and a control circuit module; the fan and the control circuit module are electrically connected; the filter assembly comprises a filter membrane with an electric field due to the including of an electret material; the control circuit module controls the fan to extract external gas; the filter membrane filters the external gas extracted by the fan; and most particles in the gas can be captured by static electricity, and part of the particles can be intercepted in the filter membrane due to blocking of filter membrane fibers. According to the design of the technical scheme, the purposes that the sampling flow is large, the time needed for collection is shortened, the sampler can be rapidly detached and cleaned, the electret electrostatic trapping and filtering trapping functions are integrated, impact is small, and microorganism survival is facilitated are achieved. In addition, the microbial aerosol sampler is free of a liquid medium and can be used for sampling under low-temperature and high-temperature conditions.

Description

technical field [0001] The invention relates to microbial aerosol, belongs to the technical field of biochemical experiments, and in particular relates to a microbial aerosol sampler. Background technique [0002] At present, the new type of coronavirus has been confirmed to be mainly transmitted through droplets and aerosols, especially in dry winter, when coughing or sneezing, large virus-containing droplets are more likely to volatilize and become small particle aerosols. The virus is easy to spread with the air, resulting in rapid infection and infection of a large number of people, while the aerosol virus is difficult to detect intuitively, and the new type of coronavirus can be transmitted without symptoms during the incubation period, that is, virus aerosols can be produced during the incubation period, which is suitable for hospitals, cars, etc. The difficulty of prevention in places where crowds gather such as train stations, airports, and subway stations has greatl...

AI Technical Summary

Problems solved by technology

The flow rate of these two samplers is small, and it takes a long time to sample in a low-concentration microbial environment to reach the detection concentration, and the microorganisms will be subject to relatively large impacts during the sampling process, which will have a greater impact on microbial activity. Therefore, it is necessary to develop a microbial aerosol sampler with a large flow rate, which can be used under low temperature and high temperature conditions, and has little impact on microorganisms.

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