METHOD OF PISTON COMPRESSOR OPERATION WITH INDEPENDENT LIQUID COOLING AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2018 - IPC F04B39/06 

FIELD: machine engineering.

SUBSTANCE: method of compressor operation is characterized in that the value of additional volume which is directly connected to the pumping cavity of the machine and partially filled with cooling liquid is reduced when the pressure increases, and vice versa, the volume is increased when injection pressure decreases. Compressor consists of a cylinder 1 with a piston 2, a working chamber 4, suction 6 and pressure increase cavities 9 with valves 5 and 8. The pressure increase cavity 9 is connected by channel 16 to additional volume 14, which is connected through the delivery valve 12 to the cooling jacket 11, and through suction valve 18 connected to the feed vessel 20. When increasing the pressure above the normal one, the plunger 24 is lowered into the volume 14 and vice versa.

EFFECT: maximum possible movement of liquid is achieved through cooling system in all operation modes of the machine which increases heat removal from the cylinder and increases cost-efficiency of the compressor.

3 cl, 4 dwg