冰箱往复式压缩机正反转低转速供油结构研究  

Research of positive and reverse rotation oil path design of reciprocating compressor at low-speed operation

作　　者：郑星炜 ZHENG Xingwei(Hefei Hualing Co.,Ltd.Hefei 230031;Midea Group Co.,Ltd.Foshan 528311)

机构地区：[1]合肥华凌股份有限公司,安徽合肥230601 [2]美的集团股份有限公司,广东佛山528311

出　　处：《家电科技》2024年第6期100-104,110,共6页Journal of Appliance Science & Technology

摘　　要：根据变频压缩机可靠性实验中由于误操作导致的压缩机反转,引发零部件磨损卡死的问题,提出了变频压缩机正、反转低转速泵油研究。通过商业流体仿真软件建立基于VOF方法的曲轴泵油两相流仿真模型,以研究曲轴油路设计对于其泵油能力的影响。提出3种油路设计:单通管油路、双螺旋交叉油路、双螺旋无交叉油路,进行了仿真和实验测试分析。实测正反转双螺旋无交叉油路设计低转速20 Hz正转泵油量为8 g/Ts,反转泵油量为6 g/Ts,均满足相关泵油量标准,说明采用双螺旋无交叉曲轴结构能满足零部件可靠性要求,压缩机可运行低转速能拓展至20 Hz。该曲轴泵油仿真模型精度较高,能较好地指导曲轴油路设计,对于提升压缩机运行效率及零部件可靠性有重要意义。According to the problem that the reverse rotation of the compressor caused by mis-operation in the reliability experiment of the variable frequency compressor leads to the wear and jamming of the parts,the research on the positive and reverse low speed pump oil of the variable frequency compressor is put forward.The two-phase flow simulation model of crankshaft oil pump based on VOF method is established by commercial fluid simulation software to study the influence of crankshaft oil path design on its oil pump capacity.Three kinds of oil path design are proposed:single-pass pipe oil path,double-helix cross oil path and double-helix non-cross oil path,and simulation and experimental test analysis are carried out.The positive rotation oil mass flow rate of the double helix non-cross oil path design running at 20 Hz is 8 g/Ts,and the reverse rotation oil mass flow rate is 6 g/Ts,which all meet the relevant oil mass flow rate standards,indicating that the double helix non-cross crankshaft structure can meet the reliability requirements of parts,and the compressor can operate at low speed and can be expanded to 20 Hz.Comparing the experimental and simulation results,the trend of simulated oil output is basically the same as that of the experiment,indicating that the crankshaft pump oil simulation model has high accuracy and could guide the crankshaft oil path design,which is of great significance for improving compressor operation and component reliability.

关 键 词：VOF模型 曲轴油路 正反转 低转速泵油 往复式压缩机 

分 类 号：TM925.21[电气工程—电力电子与电力传动] TB6[一般工业技术—制冷工程]