ROOM VENTILATION SYSTEM WITH CLEANING AIR FROM RADIOACTIVE SUBSTANCES Russian patent published in 2019 - IPC G21F9/02 

FIELD: ventilation.

SUBSTANCE: invention relates to the field of nuclear safety. Room ventilation system with air purification from radioactive substances contains a circulation duct with a fan and a filter unit with a sealing device. System also includes an air filtration efficiency monitoring system, a protective shipping container with a locking device, a tray, a stepper motor, a replacement mechanism for the filter unit, a turbo-supercharger device, a pressure sensor, two comparison units with threshold devices, a limit switch, three AND blocks, two OR blocks, and three NOT blocks. Circulation duct is made in the form of a cylindrical tube with a gap. Sealing device is made in the form of two inflatable annular elastic containers. Replacement mechanism of the filter unit is made of a revolving type, to the shaft of which the filter units are attached with suspension mechanisms. Stepper motor is kinematically connected to the shaft of the replacement mechanism of the filter unit. Turbocharging device is kinematically connected to the fan shaft.

EFFECT: invention makes it possible to increase the safety of personnel of special fortifications and the productivity of their labor.

1 cl, 2 dwg