制冷压缩机中英文对照外文翻译文献

7/7制冷压缩机中英文对照外文翻译文献中英文对照外文翻译

SmallCOMPRESSOR

Compressorrefrigerationsystemisthecoreandheartofitsdecisiontotherefrigerationsystemcapabilitiesandfeatures.Thispapernotonlyenergyefficient,noiseandvibrationandrefrigerationagentanalyzedsmallrefrigerationcompressortechnicalperformance,Analysisalsohaveappearedinrecentyears,thenew,specialsmallcompressormainfeatureforussmallrefrigerationcompressorfuturedevelopmenttrendoflayingatechnologicalfoundation.

Asweallknow,thecompressorrefrigerationsystemisthecoreandheart.Compressoranddecidedthatthecoolingsystemcapacityandfeatures.Inasense,thecoolingsystemdesignandmatchingofthecompressoristheabilitydemonstrated.Therefore,countriesintheworldareallintherefrigerationindustryrefrigerationcompressorresearchinvestedatremendousamountofenergy,newresearchdirection,andresearchresultscontinuetoemerge.Compressortechnologyandperformancelevelwitheachpassingday.

1.AcompressorEfficiencyStudy

Compressorrefrigerationsystemisthecoreenergycomponents,improvetheefficiencyofrefrigerationsystemsofthemostdirectandeffectivemeansistoincreasetheefficiencyofthecompressor,Itwillbringtheenergyconsumptiondecreasedsignificantly.Moreover,canonlyavoidthesystemtakemeasures(suchassimplyincreasingheatexchangerarea,etc.)causedbytheconsumptionofmaterialsincreased.Inrecentyears,asworldenergyshortagesituationworsensdaybyday,moreandmoreattentiontovariousenergy-savingworktheenergyefficiencyof

productsmadebytheever-increasingdemands.Duetolossessuchasfriction,leakage,harmfulheat,theelectricalloss,flowresistance,noisevibrationofexistence,Compressorworkfarbelowtheactualefficiencyoftheoreticalefficiency.Therefore,fromatheoreticalpointofview,anyreductioninalossofarbitrarymeasurestoimprovetheefficiencyofthecompressor.Theobjectivefactshaveledtotheenergysavingcompressorscope,direction,width,researchtopicsandresultsvaried.

Onthecurrentinternationalenergy-efficientcompressorsresearchconcentratedmainlyinafewareas:researchlubricationpropertiesCompressorpartsofthefrictionbearingstoreducefrictioncharacteristicsofpower,improvetheefficiencyofthecompressor;reduceleakagelossestoimprovetheefficiencyofthecompressor;usingfrequencymodulationtechnologyorrefrigerationsystemthroughtheeffortwiththeuserloadtomatchthebestenergysavingInthisregardtheparticularfrequencytechnologyhasbeenrelativelymaturewellknownandnotrepeatthemhere.ValveResearchisanoldtopicbutitisalsoaneternaltopic,ImprovementofthevalvedesignedtoimprovetheefficiencyofthecompressoralsoNagamochiendlessharvest.Researchinthisareamanytimes,fromthevalvematerial,sportslaw,optimizingthestructureoftheapplicabletheory,exhaustivetestingmethods.Inshort,energy-savingcompressorsontheresearchinrecentyearshasbecomeoneoftherefrigerationindustryfirsthotissues.

Inrecentyears,domesticrefrigerationcompressorindustrytostudy

energy-savingproductsarealsogivinggreatconcern.Progresslargerproductsmainlyrefrigeratorcompressorindustry.InChinaefficientrefrigeratorsGEFprojectstopromoteandsupport,boththeenterprisesforenergy-efficientproductsistheunderstandingoftheperformanceofrefrigeratorcompressorshaveaqualitativeleap.Atpresent,domesticenterprisesrefrigeratorcompressorproductsofthehighestenergyefficiencyhasreached1.95%.Refrigeratorcompressordomesticenterprisestotakealotoftechnicalmeasuressuchashighefficiencymotorsorsynchronousmotor,concavevalves,Planethrustbearing,lowviscositylubricants,thenewGettermuffler,

reducingfrictionlosses,andachievedgreatresults.Themainproblemisthelackofdomesticenterprisescurrentlyfreetechnology,thetechnologyhastoimitatethelinemainly,Mostoftheenterprisestobuildtheirowntechnologyinfrastructurealsounconscious,northeinterest,andthisrestrictsthedevelopmentoftechnologicalcapacity.

Relativetotherefrigeratorcompressorindustry,domesticenergy-efficient

air-conditioningcompressorstudyitwasnotperturbed,Overtheyearstheefficiencyofthecompressorisnosubstantivechange,greatermarketdemandmakesmostoftheair-conditioningcompressorenterpriseswillconcentrateonexpandingproductionon.WiththenationontheairconditionerenergyefficiencystandardssetforthefurtherimprovementofChina'sairconditionerexportsvariousperilsofshowing,domesticair-conditioningcompressorofthisshort-sightedenterpriseswillbeunabletoadapttotheenergy-savingdevelopmentofthesituation.Enterprisealsoonthefollow-upisweak.

2.Compressornoiseandvibrationstudy

Currently,thenoisehasbeenregardedasoneoftheseriouspollution.Householdrefrigerationequipmentasthesourceofpowerandheart,refrigerationcompressornoise,tobeameasureofitsperformanceasanimportantindicator.Infact,toacompressorspeaking,Mostofthenoiseisduetoshellbysomenoisefromthesourceexcitation(suchassprings,refrigerantpressurepulsation,exhaustpipe,lubricantsetc.excited).Butcompressornoisesourcesandpathwayscomplexanddiverse,whichgivesthecompressornoisesilencerbroughtgreatdifficulties.

Onthecompressornoise,vibrationandforeignscholarshaveconductedalargenumberoflong-termresearch.Hereinthisregardtothemainresearchresultsaresummarizedbelow:

ThemainrefrigerationcompressornoiseExaggerativeinlet,exhaustradiationaerodynamicnoise,mechanicalmovingpartsofmachinerynoiseandnoise-drivenmotorthreecomponents:

2.1Aerodynamicnoise

Compressorinletairflownoiseisduetotheintakemanifoldpressurepulsationintheelections.Inlet-frequencynoiseandtheintakemanifoldgasLanesamefrequencypulsatingwiththespeedofthecompressor.Compressorexhaustnoiseisduetoairintheexhaustpipecausedbyfluctuatingpressures.Exhaustnoisethantheinletnoiseweak,sothecompressoraerodynamicnoisegenerallyInletmainlynoise

2.2MechanicalNoise

Compressormechanicalnoise,includingmembersofthegeneralimpactandfriction,thepistonvibration,noiseimpactofthevalve,Thesenoisewithrandomness,washttp://./doc/ef6dd4bc69eae009591bec58.htmlputed.

2.3Electromagneticnoise

Compressorelectromagneticnoiseisgeneratedbythemotor.Motornoiseandaerodynamicnoiseandmechanicalnoiseisweakercompared.Noisesourcecompressorinlet,exhaust,aerodynamicnoise,thestrongest,followedbymechanicalnoiseandelectromagneticnoise.Throughin-depthstudies,wecanfurtherthatthemaincompressornoisefromthevibration(fromtheDepartmentofspring,Refrigerationmediumpressurepulsationandsmokeexhaustpipeandlubricantshaveincentive)totheambientmediumspreadformationnoise.Ontheefforttoreducecompressornoise,muchoftheliterature(abbreviated)proposedaseriesofmeasuresandtheNoiseandVibrationReductionprogram:

①increaserigidshellstructuretoimprovetheoverallresonancefrequencyreducesvibrationamplitude;

②curvatureoftheshelltoavoidmutation,thesurface,andthenaturalfrequencyisinverselyproportionaltotheradiusofcurvature.shellshapeitshouldbethesmallestcurvatureradius;

③springbearingflagswillbemovedtohigherrigidposition;

④shellshouldbeusedaslittleaspossibleoftheplane;bendingstressandthestresscouplingmembrane(justonthesurface)willshellitselfisfairlyrigid.Thereforecompressorshelltobeusedaslittleaspossibleplanarstructure;

⑤avoidtheexhaustpipeandcondenserincentive,optimizingexhaustflowpulsation,Exhaustpipeusedintheintroductionofadditionalvolumetotheeliminationofpressurefluctuationspectrumofhigh-orderharmonics;

⑥non-symmetricshellshape;Symmetricalthree-dimensionalstructuremeansthattheaxis,alongthemainaxisbiggeststressofleastresistance.Thereforeitisasymmetricalshellstructuremeansthatthecompressorcanbegreatlyreducedalongtheaxisdirectionofaforcewhiletheprobability;

⑦setinlet,exhaustmuffler,theclosedCompressorMufflergenerallymuffler.ItusesCrossSection,resonantcavitycausedacousticimpedancechangesinreflectivityorsoundenergyconsumption.oruseacoustic-acousticsendphasedifferenceof180degreestooffsetthemufflerofnoise.ShellcompressorinthelateralclosedUnicomaHelmholtzresonator,namely:Helmholtzresonatorfromthechamberthroughtheneckholeandshellcompressorconnectedintotheinternalcavity,toreducecompressorcavitystimulatedacousticmodalamplitude.Theresultsshowed:

resonatorresonancefrequencymodulationoftheactualcompressorcavitystimulatedthegreatestvibrationmodes,willbesubstantiallyreducedresonancepeakresponsespectrumandleadtosignificantchange.However,itwillaffecttheappearanceandthecompressorrefrigeratorsettings,theresearchresultsarenotyetappliedtoproducts.

Lubricantsandresidualvolume-coilmotorwindingswillleadtothesametypesofbulkcompressorlevelsbetweendifferent(fromlevelsaverage).Bychangingtheshellexternalsupporttoincreasetorsionalstiffnessandreducevibrationsurface;Noisestudythecomplexrequirementsofresearchershasstrongtheory,theenterprisehasgoodskillsbaseandtheneedforgreaterinvestmentandalongertimeframe.Thisisdomesticenterprisescompressoroneoftheweaklinks,whichisnowbasicallyinthequalitativephaseofexperimentalresearch,Alongwithagreatchanceandrandomness.

3.newrefrigerantsApplication

Basedonthenewenvironmentalrequirementsofrefrigerantcompressorrefrigerationindustryisahotissue.AsfortherefrigeratorproductR22refrigerantsubstitutestheendofthework,newrefrigerantcompressorinthepastfewyearsmainlyconcentratedintheairconditioningindustry.ApartfromthenowrelativelymatureR410A,R407Cthestudy,ThelargestisthehotissueofCO2compressor.Thisistheonlyissueforabriefing.

CO2currentlyontheresearchandapplicationofconcentratedmainlyinthreeaspects:oneisthemosturgentneedofalternativerefrigerantsapplications,suchasautomotiveairconditioning,asrefrigerantemissions,environmentalharm,mustbeadoptedassoonaspossiblewithoutendangeringtheenvironmentrefrigerants;theotheristoconsiderthecharacteristicsofCO2cycle,themostfavorabletotheuseofthiscycleofoccasions,IfheatpumpwaterheateristosupercriticalCO2inhotconditionsdecentralizationthereisasignificanttemperatureslipwillhelpheatWaterheatedtoahighertemperaturecharacteristicsofthefocusofpublicattention;another

oneisCO2intoaccountthenatureofheattransferpropertiesandcharacteristicsofusingCO2asarefrigerant,takingintoaccountCO2goodcoldflowpropertiesandheattransfercharacteristics,useitasacascaderefrigerationcyclecryogenicstagerefrigerants.

Compressortranscriticalcarbondioxideasanairconditioningsystemefficiencyandreliabilityofthemostaffectedparts,Itshouldbefullyintegratedsupercriticalcarbondioxidecyclespecificcharacteristicsofanewdesign.LikeammoniaandCO2,theadiabaticexponentKvaluehigher,up1.30,itmayresultinthecompressordischargetemperaturehigh,However,astheneedsofCO2compressorpressureratiosmall,thereisnoneedforcoolingthecompressoritself.Adiabaticindexishighpressureoverthesmall,Icanreducethegapcompressorfurtherexpansionofthevolumelossestothehighervolumeefficiencycompressors.Afterexperimentalandtheoreticalresearch,JurgenHorstSUBandfoundKruse,reciprocatingcompressorisagoodfilmslidingsealasthepreferredCO2system.8:3itscarbondioxidecompressorexhaustvalveforimprovedExhaustimprovedcompressorefficiencyofcarbondioxideincreasedby7%.

Asthecarbondioxidepressureisfargreaterthanthetraditionalcriticalcirculatorypressure,compressorshaftsealdesignrequirementsthantheoriginalcompressorismuchhigher,compressorshaftsealleakageoveraperiodoftimeisstillhamperedActually,themainreason.

Danfoss,Denso,ZEXELsuchascarbondioxidecompressorhasenteredthestageofsmallbatchproduction.

TheIEAinMarch1999,theJointJapan,Norway,Sweden,BritainandtheUnitedStatestoactivatethe"SelectedIssueonCO2asworkingfluidCompressionSystemsinthe"three-yearproject.

Beginningin1994,BMW,DAIMLERBENZVOLO,Germany'sVolkswagenandDanfoss.PéchineyandotherEuropeancompanieslaunchedthefamous"RACE"tothejointproject,theJointEuropeanwell-knownuniversities,automotiveairconditioningmanufacturersandotherdevelopedCO2automotiveair-conditioningsystem.SubregionMotorCompanyhasproductionequipmentCO2car

air-conditioningsystemsofcars,GermanyKONVECTAproductiontothequalityofCO2intheair-conditionedBusesrunfrom1996todate.DANFOSS,theObristAustria,theUnitedKingdomhavedevelopedacarbondioxidecompressormotor.JapanDENSO,ZEXELCO2compressorhasenteredthestageofmassproduction.

Withmajormanufacturersinputs,thetypeofCO2compressorwithordinarymotorcompressortrendlinemajorswingtodeterminethedisplacementswashplate,scrollandthemainvariabledisplacement.

4.Newprincipleofrefrigerationcompressors

Inrecentyears,thenewstructureandworkingprincipleofrefrigerationcompressormadeamoreprogress,mainlylinearcompressor,Ellipticcompressors,compressorrotorSwing,spiralvanecompressor,inthepast,theauthorhasbeendescribedinthearticle,herewillnotrepeatit.

Linearcompressorwhichisthedomesticrefrigeratorcompressorindustrythefocusofattention.In2004theInternationalCompressorEngineeringConferencehasfivelinearcompressoronthearticle.LGandresearchersstillSunpowertwomaincompanies.Thepasttwoyears,severaldomesticenterprisesintherefrigeratorcompressortothedevelopmentofthelinearcompressor,However,enterpriseshavethetechnicalfoundationforthedomesticfinancialstrengthandthelimitationsofscientificresearchinstitutions,believeinashortperiodoftimecannotenterthestageofindustrialization.

5theclassificationoftherefrigerationcompressor

5.1reciprocatingcompressor

Reciprocatingcompressorisakindoftraditionalrefrigerationcompressor,thebiggestcharacteristicistoachievethecapacityandpressurethananyofthedesign.Althoughitiswidelyapplied,butthemarketshareisgraduallyreduced.

Sofar,thefridge(includingsmallfreezingandcoldstoragedevice)hostcompoundcompressorisevertogivepriorityto.Throughtheoptimaldesignofvalvestructure,frictionpair,reciprocatingrefrigeratorcompressorrefrigerationcoefficientofpowerrefrigeratingcapacity(units)by1.0(w/w)oftheearlyninetystotoday's1.8orso;Inadditiontotheenergysavingtechnologyprogress,andenvironmentalprotectioniscloselyrelatedtotherefrigerantalternativetechnologyhasalsomadegratifyingprogress,refrigeratorsysteminourcountryhasalargenumberofusingR600hydrocarbons,suchassmallrefrigerationdeviceisalsousedthenewworkingsubstancesuchaseverything.Tofurtherimprovetheefficiencyofthereciprocatingcompressorrefrigerator,toreducethesystemnoiseisstillthedevelopmentdirectionofit.

5.2linearcompressor

Stillmakereciprocatinglinearcompressor,duetothelinearmotionofthemotorcanbedirectlydrivesthepistonreciprocatingmotion,soastoavoidthecomplexityofthecrankconnectingrodmechanismandtheresultingmechanicalpowerconsumption.Linearcompressorassemblyastherefrigeratorsystemhasappeared,therefrigerationcoefficientoflinearrefrigeratorcompressorhasmorethan2.0(w/w),marketprospectslookgood.Themainproblemisthedesignofthecompressoroilsystemandtheeffectivecontroloflinearmotordisplacementlimitpointandthecorrespondinganti-collisioncylindertechnology.

5.3theswashplatecompressor

Swashplatecompressorisalsoakindofvariantstructureofreciprocatingcompressor,ismainlyusedinautomotiveairconditioningsystematpresent.After

decadesofdevelopment,theswashplatecompressorhasbecomeaverymaturemodel,inpossessionofmorethan70oftheautomotiveairconditioningcompressormarket.Inspiteofthis,becauseitstillbelongstotheseriesofreciprocatingstructure,