东北大学学报(自然科学版) ›› 2025, Vol. 46 ›› Issue (1): 92-98.DOI: 10.12068/j.issn.1005-3026.2025.20230226

• 机械工程 • 上一篇    下一篇

无油涡旋真空泵主轴冷却装置数值模拟研究

袁熙1, 马明旭1, 陈杰1, 王哲英2   

  1. 1.东北大学 机械工程与自动化学院,辽宁 沈阳 110819
    2.梧州学院 机械与资源工程学院,广西 梧州 543002
  • 收稿日期:2023-07-27 出版日期:2025-01-15 发布日期:2025-03-25
  • 作者简介:袁 熙(2000—),男,四川自贡人,东北大学硕士研究生
    马明旭(1973—),男,辽宁本溪人,东北大学副教授,硕士生导师.
  • 基金资助:
    国家重点研发计划项目(2019YFB1705002);广西自然科学基金资助项目(2022JJA160035)

Numerical Simulation Study on Spindle Cooling Device for Oil-Free Scroll Vacuum Pumps

Xi YUAN1, Ming-xu MA1, Jie CHEN1, Zhe-ying WANG2   

  1. 1.School of Mechanical Engineering & Automation,Northeastern University,Shenyang 110819,China
    2.College of Mechanical and Resource Engineering,Wuzhou University,Wuzhou 543002,China. Corresponding author: MA Ming-xu
  • Received:2023-07-27 Online:2025-01-15 Published:2025-03-25

摘要:

针对某企业现有的无油涡旋真空泵主轴冷却结构开展研究,基于该真空泵主轴冷却装置实际结构和工作原理,分析了影响主轴冷却效率的主要技术参数.进一步构建了其内部的几何模型,并利用ANSYS Fluent软件对其流场特性和温度场特性进行了数值模拟仿真.此外,还研究了变截面冷却管道在不同管径和不同出口数量等条件下对装置温降效率的影响.结果表明:当入口段直径从3.0 mm增大至5.0 mm,轴表面温度下降了12.74%;当出口段直径从2.5 mm增大至3.5 mm,轴表面温度下降了19.68%;当管道出口数量从1个增加至4个,轴表面温度下降了23.61%.轴表面温度对中间段直径和末尾段直径的改变响应不明显.故冷却管道入口段直径、出口段直径以及管道出口的数量是影响真空泵偏心主轴温降的主要因素.

关键词: 无油涡旋真空泵, 冷却装置, 流场特性, 温度场特性, 数值模拟

Abstract:

A study is carried out on the spindle cooling structure for the existing oil‑free scroll vacuum pump in an enterprise. Based on the actual structure and working principle of the spindle cooling device for this vacuum pump, the main technical parameters affecting the cooling efficiency of the spindle are analyzed. Its internal geometric model is further constructed, and the numerical simulations of its flow field characteristics and temperature field characteristics are performed using the ANSYS Fluent software. In addition, the effect of variable cross‑section cooling pipes on the temperature drop efficiency of the device is investigated under conditions such as different pipe diameters and different numbers of outlets. The results show that when the diameter of the inlet section increases from 3.0 mm to 5.0 mm, the shaft surface temperature decreases by 12.74%; when the diameter of the outlet section increases from 2.5 mm to 3.5 mm, the shaft surface temperature decreases by 19.68%; and when the number of pipe outlets increases from 1 to 4, the shaft surface temperature decreases by 23.61%. The response of the shaft surface temperature to the change of the diameter of the middle section and the end section is not obvious. Hence, the diameter of the inlet section, the diameter of the outlet section and the number of pipe outlets are the main factors affecting the temperature drop of the eccentric spindle for the vacuum pump.

Key words: oil?free scroll vacuum pump, cooling device, flow field characteristics, temperature field characteristics, numerical simulation

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