中国机械工程 ›› 2025, Vol. 36 ›› Issue (10): 2306-2311.DOI: 10.3969/j.issn.1004-132X.2025.10.018

• 机械基础工程 • 上一篇    

电动涡旋压缩机柱销防自转机构载荷优化

刘兴旺1(), 田嵩1, 刘晓明2, 姜永为1, 孙禛1, 李阔1   

  1. 1.兰州理工大学石油化工学院, 兰州, 730050
    2.高端压缩机及系统技术全国重点实验室, 合肥, 230031
  • 收稿日期:2024-09-23 出版日期:2025-10-25 发布日期:2025-11-05
  • 通讯作者: 刘兴旺
  • 作者简介:刘兴旺*(通信作者),男,1970年生,副教授。研究方向为制冷系统及涡旋压缩机的优化。发表论文40余篇。E-mail:liuxw@lut.edu.cn
  • 基金资助:
    高端压缩机及系统技术全国重点实验室开放基金(SKL-YSJ202110)

Load Optimization of Pin Anti-rotation Mechanisms for Electric Scroll Compressors

Xingwang LIU1(), Song TIAN1, Xiaoming LIU2, Yongwei JIANG1, Zhen SUN1, Kuo LI1   

  1. 1.School of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou,730050
    2.State Key Laboratory of High-end Compressor and System Technology,Hefei,230031
  • Received:2024-09-23 Online:2025-10-25 Published:2025-11-05
  • Contact: Xingwang LIU

摘要:

针对电动涡旋压缩机柱销防自转机构因接触载荷较大导致的容易磨损甚至断裂的问题,研究了改善柱销防自转机构载荷的方法。通过分析动涡盘受到的自转力矩,研究了气体力和旋转背压油作用力引起的自转力矩随转速的变化规律,建立了自转力矩作用下含间隙柱销防自转机构的力学模型,计算了不同柱销数量下防自转机构的环销接触角。从柱销数量、齿端修正和动涡盘底板结构三个方面研究了改善柱销接触载荷的方法,并运用该方法对样机的防自转机构进行优化,对比了优化前后柱销的接触载荷和润滑条件。研究结果表明:背压油引起的自转力矩随转速的增大而增大;增大柱销数量、减小齿端修正展角和修正偏移量、改变一次平衡槽开设位置、柱销数量为双数时在环槽中心增设内销等措施可以减小柱销的接触载荷;优化后柱销接触力峰值减小了70.1%,平均接触力减小了61.3%,柱销润滑条件得到改善。

关键词: 电动涡旋压缩机, 柱销防自转机构, 自转力矩, 结构优化

Abstract:

Aiming at the problems that the pin anti-rotation mechanism of electric scroll compressors was prone to wear and even fracture due to large contact loads, several methods were studied to optimize the load on the mechanisms. By analyzing the orbiting moments of the orbiting scroll, the variation laws of the orbiting moments induced by gas forces and rotating back-pressure oil forces with rotational speed were investigated. A mechanics model of the pin anti-rotation mechanisms with clearances under the orbiting moments was established, and the contact angles between the ring and pins were calculated for different numbers of pins. Load reduction methods were studied from three aspects: the number of pins, tooth tip modification, and the bottom plate structure of the orbiting scrolls. The anti-rotation mechanisms of a prototype was optimized using these methods, and the contact loads and lubrication conditions of the pins were compared before and after optimization. The results show that the orbiting moments caused by back-pressure oil increase with rotational speed. Increasing the number of pins, reducing the modification angle and offset of tooth tips, adjusting the position of the primary balance groove, and adding an inner pin at the center of the ring groove when the number of pins is even may effectively reduce the contact loads on the pins. After optimization, the peak contact forces of the pins decrease by 70.1%, the average contact forces decrease by 61.3%, and the lubrication conditions of the pins are improved.

Key words: electric scroll compressor, pin anti-rotation mechanism, orbiting moment, structural optimization

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