US 11,913,451 B2
Screw compressor including spoked gear
Wim Meeusen, Wilrijk (BE); and Bjorn Verrelst, Wilrijk (BE)
Assigned to ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP, Wilrijk (BE)
Appl. No. 16/620,922
Filed by ATLAS COPCO AIRPOWER, NAAMLOZE VENNOOTSCHAP, Wilrijk (BE)
PCT Filed Jul. 17, 2018, PCT No. PCT/IB2018/055268
§ 371(c)(1), (2) Date Dec. 10, 2019,
PCT Pub. No. WO2019/043469, PCT Pub. Date Mar. 7, 2019.
Claims priority of provisional application 62/550,889, filed on Aug. 28, 2017.
Claims priority of application No. 2018/5153 (BE), filed on Mar. 13, 2018.
Prior Publication US 2020/0200171 A1, Jun. 25, 2020
Int. Cl. F04C 18/16 (2006.01); F01C 17/02 (2006.01); F04C 18/08 (2006.01); F04C 29/00 (2006.01); F16H 55/14 (2006.01)
CPC F04C 18/16 (2013.01) [F04C 29/0042 (2013.01); F04C 29/005 (2013.01); F01C 17/02 (2013.01); F04C 18/08 (2013.01); F04C 18/084 (2013.01); F04C 2240/40 (2013.01); F16H 55/14 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A screw compressor comprising a first rotor and a second rotor, each rotor comprising a synchronisation gear,
said screw compressor further provided with an electric motor and a driving gear for driving a driven gear provided on an axis of said first rotor or second rotor,
wherein said driving gear is mounted on the electric motor, and said driving gear has a spoked structure having a plurality of spokes between a rim supporting a gear mesh and a corresponding gear hub,
wherein gear teeth of said driving gear mesh with gear teeth of said driven gear such that said driven gear is directly driven by said driving gear,
wherein an area of a region defined within the rim, the gear hub and two adjacent spokes is more than three times a surface area of one of the spokes as viewed along an axis of the driving gear, and
wherein said spoked structure of said driving gear provides a torsional flexibility to said driving gear which prevents propagation of vibrations to said driven gear.