AIR TREATMENT DEVICE Russian patent published in 2013 - IPC F24F7/00 

FIELD: ventilation.

SUBSTANCE: air treatment device comprising an exhaust fan installed in an air duct, having an intake nozzle. The intake nozzle is made in the form of a bellows, to the lower part of which a rim is rigidly fixed, to the lower part of the latter an intake device is rigidly fixed, a cylinder with an inner thread is rigidly fixed to its side surface and interacts with the outer thread of a rod, which interacts with a motor shaft, besides, in the air duct upstream the fan there is a dust sensor, which is electrically connected to the inlet of a monitoring and control unit, to the inlets of which a signal is sent from the motor and the setter, and outlets are electrically connected with the unit of sound and light alarm, at the same time the monitoring and control unit is electrically connected with the calculation and measured data storage unit. The intake device is made in the form of a cylinder, in the lower part of which there is a disc rigidly fixed with a hole in the centre, the radius of which is equal to the inner radius of the cylinder, at the same time oppositely to this disc at the distance h there is the second disc rigidly fixed.

EFFECT: invention makes it possible to automate a process of air treatment and to automatically detect dust concentration by height.

2 cl, 2 dwg