Full
Outline
To address the issue of high power loss caused by lubricating oil resistance in the counterweight of scroll compressors，an optimized model was proposed featuring dome convex surfaces and circular arc chamfers on the front and rear end faces of the counterweight，along with lubricating oil diversion from the rear end face.Based on the sliding mesh model in FLUENT software，transient simulations were conducted on the rotation process of the counterweight in the backpressure chamber under variable speed conditions.The resistance torque acting on the counterweight and the resulting windage loss were calculated，and the accuracy of the simulation results was verified.The results show that the differential pressure resistance torque generated by the front and rear end faces of the counterweight accounts for 76.9% of the total resistance torque，and its increase with rotational speed is significantly greater than that of the frictional resistance torque.After optimization，the average pressure on the rear end face of the counterweight increases with rotational speed，while the differential pressure resistance torque and total resistance are reduced by 63.3% and 58.1%，respectively.Additionally，increasing the ratio of counterweight thickness to outer diameter can reduce windage loss by up to 40.6%.This study provides a reference for the optimal design of scroll compressors.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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