FIELD: machine building.
SUBSTANCE: cooling machine includes compressor (1), condenser (2), fluid separator (3), preliminary throttling device (4) connected to preliminary and main recuperative heat exchanger (5), which are in-series installed in circulating circuit. The main recuperative heat exchanger (6) is connected through the main throttling device to evaporator (8) which is connected to the main recuperative heat exchanger (6). Preliminary recuperative heat exchanger (5) is connected to compressor (1). Cooling machine is equipped with bypass line installed between fluid separator (3) and preliminary recuperative heat exchanger (5).
EFFECT: providing stable operation of cooling machine at low temperatures owing to minimising compressor lubrication oil penetration to the main throttling device; increasing efficiency and operating economy at low temperatures and reducing the time for the operating mode start.
2 cl, 1 dwg
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