非对称腔微型无油涡旋空压机性能研究  

Performance study of oil-free miniature scroll air compressor with asymmetric working chambers

作　　者：张羽丰 王宇轩 赵远扬 李连生 何鸿斌 ZHANG Yufeng;WANG Yuxuan;ZHAO Yuanyang;LI Liansheng;HE Hongbin(College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,China;Hefei Bolin New Material Co.,Ltd.,Hefei 200012,China)

机构地区：[1]青岛科技大学机电工程学院,山东青岛266061 [2]合肥波林新材料股份有限公司,合肥200012

出　　处：《流体机械》2025年第1期59-67,共9页Fluid Machinery

基　　金：山东省泰山学者计划项目(tsqn201812073)。

摘　　要：针对非对称腔微型无油涡旋空气压缩机排气损失较为严重的问题,给出了根据2个工作腔的内容积比设计排气孔的方法。利用CFD仿真方法,分析了不同间隙和海拔高度下非对称腔涡旋压缩机内部流场特性和性能变化规律,并进行了试验验证。结果表明:新设计的排气孔能够减少17.85%的过压缩量,减少了排气损失;当径向间隙从10μm增大到30μm时,压缩机容积效率从89.68%下降到16.02%,等熵效率从78.69%降低到32.84%;对流量、功率等主要性能参数进行试验,得到试验质量流量与模拟结果的最大误差为9.09%,功率在排气压力为0.26 MPa时的最大误差为8.90%。相关结果对于降低非对称腔涡旋压缩机的排气损失有参考意义。For the problem of serious exhaust loss of miniature oil-free scroll air compressor with asymmetric working chambers,the design method of the exhaust port was given according to the inner volume ratio.The effects of the internal flow field characteristics and performance variations of the scroll compressor with asymmetrical chambers under different clearances and altitude were analyzed by CFD method and verified experimentally.The results show that the new exhaust port can reduce the amount of overcompression by 17.85%and reduce exhaust losses.When the radial clearance increases from 10μm to 30μm,the compressor volumetric efficiency decreases from 89.68%to 16.02%and the isentropic efficiency decreases from 78.69%to 32.84%.Experimental results on main performance such as flow and power etc.show that the maximum error between the experimental mass flow rate and the simulation result is 9.09%,and the maximum error of the power at an exhaust pressure of 0.26 MPa is 8.90%.The relevant results are of reference significance for reducing the exhaust loss of scroll compressors with asymmetric working chambers.

关 键 词：非对称腔涡旋空压机 排气孔 性能模拟 变工况特性 

分 类 号：TH138[机械工程—机械制造及自动化]