FIELD: cryogenic engineering; applicable in cleaning of air in airtight rooms of special fortifications, submarines, orbital stations, etc. SUBSTANCE: plant includes line of polluted air supply, electric fan and electric heater, regenerative heat exchanger, cryogenic Stirling's machine, discharge line of liquid air, heat-insulated vessel for storage of liquid air, evaporator connected with heat-insulated line of supply of liquid air having actuator and check valves, line of gaseous pure air connecting evaporator with internal space of room and running through regenerating heat exchanger and having electric heater. Line of polluted air supply has mechanical filter and in running to condenser of cryogenic machine through regenerating heat exchanger and evaporator. EFFECT: reduced weight and size characteristics, decreased power consumption. 1 dwg
