US 12,435,721 B2
Drive system for a multi-stage screw compressor
Rainer Oberhausen, Simmern (DE); and Michael Federmann, Bell (DE)
Assigned to COMPAIR DRUCKLUFTTECHNIK—ZWEIGNIEDERLASSUNG DER Gardner Denver Deutschland GMBH, Simmern (DE)
Appl. No. 18/552,590
Filed by COMPAIR DRUCKLUFTTECHNIK—ZWEIGNIEDERLASSUNG DER Gardner Denver Deutschland GMBH, Simmern (DE)
PCT Filed Apr. 26, 2022, PCT No. PCT/EP2022/060967
§ 371(c)(1), (2) Date Apr. 12, 2024,
PCT Pub. No. WO2022/229133, PCT Pub. Date Nov. 3, 2022.
Claims priority of application No. 102021111297.4 (DE), filed on Apr. 30, 2021.
Prior Publication US 2024/0280105 A1, Aug. 22, 2024
Int. Cl. F04C 29/00 (2006.01); F04C 18/16 (2006.01)
CPC F04C 29/005 (2013.01) [F04C 18/16 (2013.01); F04C 2240/60 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A drive system for a multistage screw compressor comprising:
a housing including a housing cavity, a fluid inlet and a fluid outlet;
a first compressor stage including a first main rotor mounted on a first shaft in a torque-proof manner, the first shaft defining a first shaft axis;
a second compressor stage including a second main rotor mounted on a second shaft in a torque-proof manner, the second shaft defining a second shaft axis parallel to the first shaft axis and;
a drive shaft configured to respectively drive the first shaft of the first main rotor and the second shaft of the second main rotor of the first and second compressor stages,
wherein the housing houses the first compressor stage, the second compressor stage and the drive shaft within the housing cavity, and where the drive shaft is configured to drive the first shaft of the first main rotor independently from the second shaft of the second main rotor.