Patent ID: 8708666

Claim:
A multi-stage compressor for compressing gases with a low-pressure region and a high-pressure region, at least one screw-type compressor in the low-pressure region, at least one reciprocating piston compressor with two cylinders in the high-pressure region, a common engine for driving both the screw-type compressor and the reciprocating piston compressor, said engine having a crankshaft with a longitudinal axis that is substantially horizontal, said engine being disposed laterally next to the reciprocating piston compressor, wherein stepped pistons or double-acting pistons are received in the cylinders, and the cylinders oppose each other by 180° in the high-pressure region with respective longitudinal axes of said cylinders extending substantially horizontally such that the reciprocating piston compressor is arranged in a boxer construction that can neutralize forces of inertia from the reciprocating pistons during each crankshaft rotation, wherein the screw-type compressor is coupled directly to the engine-driven reciprocating piston compressor.