COMPRESSOR WITH BALANCE OF AXIAL FORCE AND METHOD OF BALANCING Russian patent published in 2017 - IPC F04D29/51 

FIELD: machine engineering.

SUBSTANCE: compressor for installation, an engine-compressor, containing a balancing piston (7) on a rotating shaft (2), a group of bladed wheels (R), the rear cavity (11) of the piston located contiguously with balancing piston (7) on the side opposite to the group of bladed wheels (R), a control valve (14), with the possibility of connecting the rare cavity (11) with the input of the group of bladed wheels (R), a suction pressure chamber (20) connected to the input of the group of bladed wheels (R), while the rear cavity (11) is located between the balancing piston (7) and the suction pressure chamber (20). The compressor contains a discharge pressure chamber (18) located between the rear cavity (11) of the piston and the suction pressure chamber (20), the discharge pressure chamber (18) is connected via pressure line (19) with the injection zone (10) located between the group of bladed wheels (R) and the balancing piston (7).

EFFECT: increase the efficiency.

9 cl, 1 dwg