涡旋式汽车空调压缩机的型线修正及性能研究对策.pdf

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2021-11-04 发布于湖北
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涡旋式汽车空调压缩机的型线修正及性能研究对策.pdf

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Subject :CorrectiontotheProfilesofthe Conditionerand PerformanceResearch Specialty: Name :JinLinfang(Signature) Instructor: (Signature)2 ze#ct,f ABSTRACT Scrollcompressorforautomotiveairconditionerisanewtypeof compressor.Owingto itscharacteristicsofsimplicity,reliability, highefficiency,lowlevelofnoiseandvibration,wideapplication area,ithasattractedincreasingresearchersattention.Oneofthe mainproblemsencounteredinthedevelopmentofscrollcompressor isthedesignofthescrollwraps,whichplaysakeyrolein determiningtheperformanceofascrollcompressor. inthisarticle,theauthordescribethetheoreticalanalysisand parametersstudiesofcorrectiontoscrollprofile.Comparedwith conventionalprofile,ithasthefollowingadvantages:(1)Thetop clearancevolumeattheendofthedischargingprocess fundamentallybecomeszero.(2)Thescrollcentershapecanbe variedbychangingparameters.(3)Easiermanufacturetoensure presion.Becauseofthechangeofprofile,theworkprocess, thermodynamicsanalysisanddynamicscalculationshouldbe rebuildalso.Basedonthecomputeranalysisofcompressionand dischargeprocess,theauthorproposedthenewconceptofpost- engageangle,themethodtodefinedischargeangle,presentedthe opinionontheprinciple,methodtodesigndischargehole,mixed processandmoreaccuratedivideofworkprocess.Accordingtothe principleofengineeringthermodynamics,masschangingsystem thermodynamicsand hydrodynamics,theauthorrebuiltthe theoreticalmodelforthethermodynamicprocess,whichismore closetothereality.ScrolICAD,athreedimensionsoftware, is providedtoauxiliaryanalysisandparameterstudy. Inordertoverifytherationalityofthetheoreticalanalysisand model，aexperimentfortheinnercompressionprocessofthe compressorwasperformedBycomparingthetheoreticalcalculating resultwiththetestingresult,theanalysiswasprovedtobesuitable tothereality. Comparedwithconventionalcompressor,the compressorwithcorrectionscrollprofilewasprovedtohavea higherperformanc