PISTON-TYPE PUMP-COMPRESSOR Russian patent published in 2015 - IPC F04B19/06 

FIELD: engines and pumps.

SUBSTANCE: pump-compressor consists of cylinders 1 and 2 with pistons 3 and 4.Both cylinders have head ends 5 and 6 and rod ends 7 and 8 connected with crankcase 9 filled with fluid and divided by web 10 into two chambers. Chambers 5 and 6 have gas distribution members composed of self-operating check valves 13-16 communicating head ends 5 and 6 with suction line 17 and delivery line 18. Pistons are coupled with con rods with crankshaft 22 with cranks 22 and 23 offset through 180 degrees. Fluid distribution members consist of common pressure valve 24 and suction common slide valve 25 arranged in web 10 of crankcase 9. Delivery valve 24 has two end surfaces to shut off the bores 26 and 26′ arranged in circle to connect adjacent chambers 8 and 14 and adjacent 7 and 12 via hole 27 with inner fluid jacket 28 and, further, via hole 29, with outer fluid jacket 30 and, further, with fluid consuming device. Radial slide valve 25 has recesses 32 and 33 that make the outlet of slide valve 25 and occupy, each, the angle smaller than 180 degrees. Said recesses are located at the surface of slide valve 25 so that at increase in the volume of chamber 7 the recess 32 communicates with slide valve inlet 34 and, further, with fluid suction line 35 connected with fluid source. At increase in the volume of chamber 8 the suction line 35 communicates with said chamber via recess 33 and inlet of slide valve 34.

EFFECT: more uniform feed of fluid to consuming component and good cooling of cylinders, compact design, expanded applications.

2 cl, 2 dwg