FIELD: cryogenic engineering; cryogenic refrigerating machines working on Stirling cycle. SUBSTANCE: gaseous air is sucked to condenser of Stirling cryogenic machine from surrounding atmosphere where it is condensed changing to liquid phase. Vapors of water and carbon dioxide are frozen on condenser walls in form of frost coat of ice and carbon dioxide. Cleaned liquid air is drained by gravity to Dewar flask where it is directed to consumers or to surrounding medium by means of high-pressure pump passing in succession through check valve, heat exchanger, open shut-off valve and receiver. Provision is made for cooling loop for removal of thermal load from cryogenic machine. Cooling loop is provided with heat exchanger which makes it possible to cool down cooling liquid to temperature considerably below surrounding temperature. EFFECT: enhanced efficiency of air cleaning; increased cooling effect of cryogenic machine. 1 dwg
