FIELD: machine building.
SUBSTANCE: invention relates to compressor industry and can be used in designing efficient piston machines for gas compression with individual liquid-cooled cylinder-piston group. Piston machine comprises cylinder 1 and placed therein piston 2, compression chamber 3, suction 4 and pressure 5 valves arranged in suction 6 and discharge 7 cavity and connected with suction 8 and discharge 9 lines. Cylinder 1 has hydraulic jacket 10 connected via heat exchanger 11 with device for fluid pumping, that is made in form of a narrower section 12 of suction line 8.
EFFECT: reduced dimensions and weight of machine, as well as reduced specific costs for gas compression.
5 cl, 6 dwg
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