US 11,898,562 B2
Pumping assembly, compressor and air conditioning equipment
Yusheng Hu, Zhuhai (CN); Huijun Wei, Zhuhai (CN); Jia Xu, Zhuhai (CN); Liying Deng, Zhuhai (CN); Guomang Yang, Zhuhai (CN); Shebing Liang, Zhuhai (CN); and Pengkai Wan, Zhuhai (CN)
Assigned to GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
Appl. No. 17/299,600
Filed by GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
PCT Filed Oct. 31, 2019, PCT No. PCT/CN2019/114735
§ 371(c)(1), (2) Date Jun. 3, 2021,
PCT Pub. No. WO2020/173118, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 201910147053.9 (CN), filed on Feb. 27, 2019.
Prior Publication US 2022/0034323 A1, Feb. 3, 2022
Int. Cl. F04C 29/02 (2006.01); F04C 18/344 (2006.01); F04C 29/04 (2006.01); F01C 21/10 (2006.01)
CPC F04C 29/028 (2013.01) [F01C 21/106 (2013.01); F04C 18/344 (2013.01); F04C 29/023 (2013.01); F04C 29/04 (2013.01); F04C 2240/50 (2013.01); F04C 2240/603 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A pumping assembly, comprising a first structural body, a rolling bearing assembly, a second structural body, a third structural body and a main shaft, wherein the main shaft sequentially passes through the first structural body, the rolling bearing assembly, the second structural body and the third structural body, and the pumping assembly comprising a plurality of lubricating oil paths, wherein the plurality of lubricating oil paths are comprised of: a first lubricating oil path passing through the second structural body, a sliding sheet backpressure cavity of a rotor structure of the main shaft, the third structural body, the second structural body and a rolling body of the rolling bearing assembly; a second lubricating oil path passing through the sliding sheet backpressure cavity of the rotor structure of the main shaft and a first structural body pressure relieving groove of the first structural body; and a third lubricating oil path passing through the sliding sheet backpressure cavity of the rotor structure of the main shaft, the first structural body and the rolling body of the rolling bearing assembly.