PISTON TWO-STAGE MACHINE WITH INTERNAL LIQUID COOLING SYSTEM Russian patent published in 2018 - IPC F04B39/06 

FIELD: machine engineering.

SUBSTANCE: piston two-stage machine consists of a casing 1 with a drive mechanism driving the piston 4, which together with the common cylinder forms gas cavities of the first stage 5 and the second stage 6, and the liquid additional stage 11. All stages are provided with suction and delivery valves. There are cooling jackets 9, 10 around gas stages. During the reciprocating movement of the piston 4, gas is sucked into cavity 5 of the first stage, its compression and supply to the second stage 6, where gas is compressed and supplied to the consumer. Liquid is sucked into cavity 5 through the jacket 10, compressed and pumped through the jacket 9, thereby cooling of the first 5 and the second 6 stages and sealing of gaps between the piston and cylinders of gas stages is achieved.

EFFECT: autonomous cooling of the machine during compression of gases, contactless sealing of the piston, and machine efficiency improvement.

3 cl, 3 dwg