基于间隙泄漏模型的微型转子压缩机结构优化  

Structural optimization of micro rotary compressors based on gap leakage model

作　　者：蔡德华[1] 陈梦婷 陈恩 吴小艳 CAI Dehua;CHEN Mengting;CHEN En;WU Xiaoyan(School of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Hefei General Machinery Research Institute Co.Ltd.,Hefei 230000,China;College of Mechanical and Electrical Engineering,Hubei Polytechnic University,Huangshi 435003,Hubei China)

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074 [2]合肥通用机械研究院有限公司,安徽合肥230000 [3]湖北理工学院机电工程学院,湖北黄石435003

出　　处：《华中科技大学学报(自然科学版)》2025年第1期136-142,共7页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：高端压缩机及系统技术全国验室开放基金资助项目(SKL-YSJ202204);湖北省自然科学联合创新基金重点资助项目(2023AFD002).

摘　　要：针对追求紧凑设计与高效运转过程中微型滚动转子压缩机面临的内部制冷剂泄漏难题,提出了一种基于间隙泄漏数学模型的优化设计方法.通过分析在固定排气量条件下,最小泄漏通道间隙、相对偏心距及相对气缸长度对R290与R32型压缩机泄漏量的影响,比较两种制冷剂压缩机在不同结构配置下的泄漏损耗,识别出影响能效的关键结构参数.据此,提出了优化设计方案,调整相对偏心距和相对气缸长度至0.2130和0.4,同时将径向间隙减至10μm,可使容积效率从46.77%提高至67.48%,实现了44.28%的效率提升.A gap leakage mathematical model based optimization design method was proposed to address the internal refrigerant leakage problem faced by micro rolling rotor compressors in pursuit of compact design and efficient operation.By examining the influence of the minimum leakage channel gap,relative eccentricity,and relative cylinder length on the leakage volume of Refrigerant 290(R290)and Refrigerant 32(R32)compressors under a condition of fixed exhaust volume,and by comparing the leakage losses of two types of refrigerant compressors under various structural configurations,the key structural parameters affecting energy efficiency were identified.Based on these findings,an optimized design scheme was proposed,wherein the relative eccentricity and relative cylinder length were adjusted to 0.2130 and 0.4,respectively,and the radial gap was reduced to 10μm.Consequently,the volumetric efficiency increased from 46.77%to 67.48%,achieving an efficiency improvement of 44.28%.

关 键 词：微型滚动转子压缩机 容积效率 泄漏损失 数学模型 润滑剂-制冷剂混合物 天然制冷剂 

分 类 号：TB652[一般工业技术—制冷工程]