# US 11,898,562 B2 · Pumping assembly, compressor and air conditioning equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,562 B2 - Document ID: US11898562B2 - Status: Granted - Kind: B2 - Application number: 17/299,600 - Filed: 2019-10-31 - Published: 2022-02-03 - Granted: 2024-02-13 - Earliest claimed: 2019-02-27 - Assignees: Gree Electric Appliances, Inc. of Zhuhai - Applicants: Gree Electric Appliances, Inc. of Zhuhai - Inventors: Yusheng Hu; Huijun Wei; Jia Xu; Liying Deng; Guomang Yang; Shebing Liang; Pengkai Wan - Web page: https://patentgrep.com/patent/US11898562B2 ## CPC - F04C 18/3441: {the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation} - F04C 29/028: {Means for improving or restricting lubricant flow} - F01C 21/106: {with a radial surface, e.g. cam rings} - F04C 18/344: with vanes reciprocating with respect to the inner member - F04C 29/023: {Lubricant distribution through a hollow driving shaft (F04C29/025 takes precedence)} - F04C 29/04: Heating; Cooling (of machines or engines in general F01P); Heat insulation (heat insulation in general F16L59/00) - F04C 2240/50: Bearings - F04C 2240/603: with internal channels for fluid distribution, e.g. hollow shaft - F04C: ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS (engines F03C); ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS - F01C: ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES (internal-combustion aspects F02B53/00, F02B55/00) ## Abstract The present disclosure provides a pumping assembly, a compressor and air conditioning equipment. The pumping assembly includes a first structural body, a rolling bearing assembly, a second structural body, a third structural body and a main shaft passing through the first structural body, the rolling bearing assembly, the second structural body and the third structural body. The pumping assembly includes: a first lubricating oil path passing through a second structural part, the sliding sheet backpressure cavity, a third structural part, a second structural part and a rolling body of the rolling bearing assembly; a second lubricating oil path passing through the sliding sheet backpressure cavity and a first pressure relieving groove of the first structural body; and a third lubricating oil path passing through the sliding sheet backpressure cavity, the first structural part and the rolling body of the rolling bearing assembly. ## Claims ### Claim 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. ### Claim 2 (depends on 1) The pumping assembly according to claim 1, wherein the first lubricating oil path comprises a main shaft center hole of the main shaft, a main shaft oil hole of the main shaft, a second structural body backpressure groove of the second structural body, the sliding sheet backpressure cavity of the rotor structure of the main shaft, a second structural body pressure relieving groove of the second structural body, a second structural body first oil groove of the second structural body, a third structural body first oil hole of the third structural body, a third structural body second oil hole of the third structural body, a second structural body oil hole of the second structural body, the rolling body of the rolling bearing assembly, a second structural body second oil groove of the second structural body, an outer ring oil hole of the rolling bearing assembly and a first structural body first oil hole of the first structural body, and the first structural body first oil hole is configured to allow lubricating oil in the first lubricating oil path return to an oil pool. ### Claim 3 (depends on 1) The pumping assembly according to claim 1, wherein the second lubricating oil path comprises a main shaft center hole of the main shaft, a main shaft oil hole of the main shaft, a second structural body backpressure groove of the second structural body, the sliding sheet backpressure cavity of the rotor structure of the main shaft, a first structural body backpressure groove of the first structural body, a first structural body pressure relieving groove of the first structural body and a spiral groove of the first structural body, and the spiral groove is configured to allow lubricating oil in the second lubricating oil path to return to an oil pool. ### Claim 4 (depends on 1) The pumping assembly according to claim 1, wherein the third lubricating oil path comprises a main shaft center hole of the main shaft, a main shaft oil hole of the main shaft, a second structural body backpressure groove of the second structural body, the sliding sheet backpressure cavity of the rotor structure of the main shaft, a first structural body backpressure groove of the first structural body, a first structural body second oil hole of the first structural body, a first structural body third oil hole of the first structural body, the rolling body of the rolling bearing assembly, a second structural body second oil groove of the second structural body, an outer ring oil hole of the rolling bearing assembly and a first structural body first oil hole of the first structural body, and the first structural body first oil hole is configured to allow lubricating oil in the third lubricating oil path return to an oil pool. ### Claim 5 (depends on 1) The pumping assembly according to claim 1, wherein the first structural body is located above the rolling bearing assembly, and the second structural body and the third structural body are located below the rolling bearing assembly; or the first structural body is located below the rolling bearing assembly, and the second structural body and the third structural body are located above the rolling bearing assembly. ### Claim 6 (depends on 1) The pumping assembly according to claim 1, wherein the first structural body is an upper flange, the second structural body is a lower flange, and the third structural body is a cover plate. ### Claim 7 (depends on 2) The pumping assembly according to claim 2, wherein a relationship between a diameter d0 of the main shaft and a diameter d1 of the main shaft center hole of the main shaft satisfies: 0.2d0≤d1≤0.5d0. ### Claim 8 (depends on 2) The pumping assembly according to claim 2, wherein a relationship between a diameter d2 of the main shaft oil hole of the main shaft and a diameter d1 of the main shaft center hole of the main shaft satisfies: 0.15d1≤d2≤0.6d1. ### Claim 9 (depends on 2) The pumping assembly according to claim 2, wherein a relationship among a diameter d1 of the main shaft center hole of the main shaft, a diameter d3 of the third structural body first oil hole of the third structural body, a diameter d4 of the third structural second oil hole of the third structural body and a diameter d5 of the second structural body oil hole of the second structural body satisfies: 0.1d1≤d3≤d4≤d5≤0.3d1. ### Claim 10 (depends on 4) The pumping assembly according to claim 4, wherein a relationship among a diameter d2 of the main shaft oil hole of the main shaft, a diameter d6 of the first structural body second oil hole of the first structural body and a diameter d7 of the first structural body third oil hole of the first structural body satisfies: 0.3d2≤d6≤d7≤d2. ### Claim 11 (depends on 4) The pumping assembly according to claim 4, wherein a relationship among a diameter d3 of a third structural body first oil hole of the third structural body, a diameter d7 of the first structural body third oil hole of the first structural body and a diameter d8 of the first structural body first oil hole of the first structural body satisfies: 0.125(d3{circumflex over ( )}2+d7{circumflex over ( )}2){circumflex over ( )}0.5≤d8≤(d3{circumflex over ( )}2+d7{circumflex over ( )}2){circumflex over ( )}0.5. ### Claim 12 (depends on 1) A compressor, comprising the pumping assembly according claim 1. ### Claim 13 (depends on 12) Air conditioning equipment, comprising the compressor according to claim 12. ### Claim 14 (depends on 3) The pumping assembly according to claim 3, wherein a relationship between a diameter d0 of the main shaft and a diameter d1 of the main shaft center hole of the main shaft satisfies: 0.2d0≤d1≤0.5d0. ### Claim 15 (depends on 4) The pumping assembly according to claim 4, wherein a relationship between a diameter d0 of the main shaft and a diameter d1 of the main shaft center hole of the main shaft satisfies: 0.2d0≤d1≤0.5d0. ### Claim 16 (depends on 3) The pumping assembly according to claim 3, wherein a relationship between a diameter d2 of the main shaft oil hole of the main shaft and a diameter d1 of the main shaft center hole of the main shaft satisfies: 0.15d1≤d2≤0.6d1. ### Claim 17 (depends on 4) The pumping assembly according to claim 4, wherein a relationship between a diameter d2 of the main shaft oil hole of the main shaft and a diameter d1 of the main shaft center hole of the main shaft satisfies: 0.15d1≤d2≤0.6d1.