Articles论文52家电科技www.jdkjjournal.comVol.42023Issue423空调室外机电子膨胀阀出液管断管分析与优化Analysisandoptimizationofliquidoutletpipebreakofelectronicexpansionvalveofairconditioneroutdoorunit穆晓佳单联瑜吴俊鸿彭光前夏增强MUXiaojiaSHANLianyuWUJunhongPENGGuangqianXIAZengqiang小米科技（武汉）有限公司湖北武汉430000XiaomiTechnology(Wuhan)Co.,Ltd.Wuhan430000摘要：在某款家用空调室外机项目开发阶段的模拟运输扫频振动实验中，电子膨胀阀出液管根部出现断管现象，通过有限元仿真分析，原方案在77Hz频率处电子膨胀阀组件存在整体上下模态，是导致断管的主要原因。针对此断管问题，提出了加强管焊接位置的优化方案，仿真得出优化后在实验频率范围内未出现整体上下模态，且在原断管位置处的应力相比原管路方案降低了73.1%。经实验验证，该加强管优化方案有效，可避免该款机型的电子膨胀阀出液管断管问题。关键词：家用空调；室外机；模拟运输；扫频振动；断管Abstract:Inthesimulationtransportationsweepfrequencyvibrationexperimentofahouseholdairconditioningoutdoorunitprojectinthedevelopmentstage,thephenomenonoftubebreakingoccurredattherootoftheliquidoutletpipeoftheelectronicexpansionvalve.Throughfiniteelementsimulationanalysis,itwasfoundthattheelectronicexpansionvalveassemblyintheoriginalschemehadanoverallupanddownmodeatthefrequencyof77Hz,whichwasthemaincauseoftubebreaking.Inordertosolvethisproblem,anoptimizationschemetostrengthentheweldingpositionofthepipeisproposed.Thesimulationresultsshowthatnooverallupanddownmodesappearwithintheexperimentalfrequencyrangeafteroptimization,andthestressattheoriginalbrokenpipepositionisreducedby73.1%comparedwiththeoriginalpipescheme.Theexperimentalresultsshowthatthereinforcedpipeoptimizationschemeiseffectiveandcanavoidtheproblemofbrokenpipeoftheelectronicexpansionvalveoutletpipeofthismodel.Keywords:Householdairconditioning;Externalmachine;Simulatedtransportation;Sweepfrequencyvibration;Brokentube中图分类号：TB6;TB53DOI:10.19784/j.cnki.issn1672-0172.2023.04.0080引言随着人们生活水平的提高，越来越多的空调产品进入市场，空调的质量显得尤为重要。而空调室外机压缩机管路系统作为空调的重要...
