FIELD: machine building.
SUBSTANCE: invention relates to piston-type power machines of volumetric action and can be used for creation of compact units supplying simultaneously or alternately compressed air and liquid under pressure to consumer. Machine comprises crankcase 1 with crank-and-rod drive mechanism 2, trunk piston 5, gas 6 and liquid 7 cylinders with suction 8 and 9 and discharge valves 10 and 11 in suction cavities 12 and 13 and discharge 14 and 15, connected with suction lines 16 and 17 and gas and liquid 18 and 19 delivery. Liquid cylinder 7 is aligned with cooling jacket 21. Piston 5 has annular projection 22 entering this jacket. Valve box 20 comprises ledge 23 coupled with clearance 24 with inner surface of annular projection 22 of piston 5.
EFFECT: higher efficiency of machine, reduced labor intensity of its manufacturing and repair.
5 cl, 4 dwg
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