AIR CLEANING DEVICE Russian patent published in 2020 - IPC F24F11/00 F24F3/16 

FIELD: water and air purification technology.

SUBSTANCE: invention relates to an air cleaning device. It comprises flow channel extending between inlet and outlet, structure and air movement removing structure, a branched channel of the sensor, which includes a first branch extending between the opening for ambient air and an additional outlet in the flow passage between the inlet and the air movement device, and a second branch extending between the ambient air opening and the additional inlet in the flow channel between the air movement device and the outlet, pollutant sensor in branch split section, valve mechanism in branched sensor channel, made with possibility of sole disconnection of first branch from flow channel in first configuration and solely disconnection of second branch from flow channel in second configuration, and controller with possibility to control valve mechanism, processor connected to pollutant sensor, wherein processor is configured to extract pollutant concentration from sensor data provided by contaminant sensor, as well as with possibility of periodic switching of valve mechanism between first configuration and second configuration, extraction of first contaminant concentration from sensor data, provided by the contaminant sensor in the valve arrangement in the first configuration, extracting the second contaminant concentration from the sensor data, provided with contaminant sensor at valve mechanism in second configuration, and determining the removal efficiency of the contaminant which removes contaminants from the structure based on the recoverable first concentration of the contaminant and the second concentration of the contaminant.

EFFECT: this allows to determine cost-effectively concentration of analyzed substance of interest in several flows of fluids.

9 cl, 6 dwg