VIRTUAL IMPACTOR Russian patent published in 2020 - IPC G01N1/26 

FIELD: instrument engineering.

SUBSTANCE: invention relates to instrument-making, in particular to devices for sampling aerosols from air for further physical-chemical or microbiological analysis. Virtual impactor, comprising housing, filter substrate with filter, is characterized in that housing is divided into input section, middle section, outlet section, inlet and outlet sections along connecting circuit have external thread, and middle section by connecting contours has internal thread, forming threaded connection between sections; Intake section inlet channel has accelerating nozzle; middle section in inner space on the side of inlet section has substrate for filter of coarse particles with filter, and behind substrate there is accelerating nozzle; outlet section in inner space includes shell with space around its walls for air movement; in structural space of shell on side of middle section in grooves there is a substrate of baffle of fine particles, which is directed by recess for filter with filter of small particles towards accelerating nozzle of middle section; barrel at outlet end is conjugated with mesh structure.

EFFECT: improved technical characteristics of the device for aerosol sampling and improved efficiency of aerosol trapping and reliability of information on the state of the monitored medium.

7 cl, 4 dwg