AEROSOL BIOLOGICAL SAMPLING INSTRUMENT Russian patent published in 2009 - IPC G01N1/22 C12M1/26 

FIELD: mechanics.

SUBSTANCE: aerosol biological sampling instrument comprises a casing with outlet union to connect the appliance designed to force air through the sampling instrument, a vortex chamber with intake branch pipe arranged tangentially therein and a cyclone. The cyclone base is connected to the vortex chamber upper part. The proposed device comprises also a circulation fluid collector fitted at the cyclone top and a sorbing fluid reservoir connected, via the drain pipe, with the circulation fluid collector. The sorbing fluid reservoir is also connected to the drain pipe. The sampling instrument incorporates also the sorbing fluid sprayer and fluid ejector representing a nozzle arranged in the first inner channel of intake branch pipe. The latter represents a stepwise pipe with the smaller diameter on the branch pipe inlet, while fluid ejector nozzle is arranged on the intake branch pipe larger-diameter part in the section of diameter stepwise change and is connected, via the ejector pipe, with the said reservoir. Note here that the intake branch pipe has the second inner stepwise channel with smaller diameter on the branch pipe inlet side. The sprayer comprises additionally an air ejector representing a nozzle arranged in the said second inner channel of intake branch pipe located in the larger-diameter second inner channel part in the section of diameter stepwise change and is connected, via the ejector pipe, with the said reservoir.

EFFECT: reduced loss of fluid circulating in sampling instrument, higher efficiency of entrapping aerosol particles from air flow.

3 cl, 3 dwg