涡旋齿数对多齿涡旋压缩机性能的影响

:2008-11-08:(50806082);(20070425525);(07-2-3-15-jch):(1976-),(),,,,:167325005(2009)0320118205,,,(,257061):,,,:,,;,;,:;;;:TH45:AInfluenceofwrapnumberonperformanceofmulti2wrapscrollcompressorWANGJun,JUHong,ZHAOMing,QUYan(CollegeofMechanicalandElectronicEngineeringinChinaUniversityofPetroleum,Dongying257061,China)Abstract:Ageneralgeometrymodelofmulti2wrapscrollplatewasestablished,thevariationlawsofperformanceparameterssuchassuctionvolume,compressionratioandrelativevelocitywithwrapnumberwereobtained,theinfluencingfactorsofthestructureparametersofwrapthickness,wrapheightaswellaspitchinworkingprocesswerediscussed,andthediffer2encesbetweencircleinvoluteandregularpolygoninvoluteusedforwrapprofilewereanalyzed.Comparedwithsinglewrapscrollcompressor,therelativevelocityofmulti2wrapscrollcompressorwiththesamebasiccircleradiusdecreasesobviously,anditssuctionvolumewiththesamepitchincreases.Therefore,themulti2wrapscrollcompressorcanincreasesuctionvol2ume,decreasecompressorÂsshapedimensionandreducefrictionlossatthesametime,andismoreapplicabletothesitua2tionoflargesuctionvolume.Keywords:scrollcompressor;multi2wrap;geometrymodel;optimization,,[122][328],,,,,,,,[324],[3],,200933()Vol.33No.33JournalofChinaUniversityofPetroleumJun.200911111,,2:2;22;4,(Ror),1Fig.1Meshingofmulti2scrollwrap,180,2;,2180,90270,2,4,490;Z,Z360/Z,180/Z,3180/Z,5180/Z,,(2Z-1)180/Z,Z,2Z,2Z180/Z1122:ZSths,e,21132,Rb,ZZ/(2).StRorRw=2Rb,St=2Rb/Z,Ror=12(St-2)=ZRb-2Rb,Rw=Rb(e+)2+1.2Fig.2Structureofmulti2scrollplateDD=2(Rw+l).uu=2nRor/60.,l,mm;n,r/min(1),,VsVdVs=2ZhZ-R2b2(e-x)2dx-Z-R2b2(e-2-x)2dx,Vd=2ZhZ-R2b2(s+3-x)2dx-Z-R2b2(s+-x)2dx.,k,=Vs/Vdk.2,,,,(1),,,,,;,,,911333,:(2)h,,,,(3)/St,h/St,/hh/D/St,,;h/St,h/St;/h;h/D(4)n,,3311RbhRwn,33Fig.3Multi2scrollwrapwiththesamebasiccircleradius,,,St,Ror4(Rb=716394mm,h=50mm,Rw=130mm,n=3600r/min),,,,,,,4Fig.4Performancecomparisonofmulti2scrollwrapwiththesamebasiccircleradius312SthRwn,55Fig.5Multi2scrollwrapwiththesamepitch,,,,,6(Ror=715mm,h=50mm,Rw=145mm,n=3600r/min),,,,,,,021()200966Fig.6Performancecomparisonofmulti2scrollwrapwiththesamepitch313QshRorn,,,1(Qs=313m3/min,=415mm,h=50mm,Ror=715mm,n=3600r/min)1Table1PerformancecomparisonwiththesamesuctionvolumeZ/NRw/mmD/mm18188120215133472221665190130100299311492100109186259411071103106111251314QshRorD,,2(Qs=313m3/min,=415mm,h=50mm,Ror=715mm,Rw=130mm)2Table2PerformancecomparisonwiththesamescrollplatediameterZn/(rmin-1)u/(ms-1)164015103236002183327452116424101189523271183315,,,:(1),,,,(2),(3),,,(4),,(5),(6),(7),,,Z,,,4,,,[4]7,7Fig.7Comparisonbetweenregularpolygoninvoluteandcircleinvolute7,,,,31208%,121333,:0122%,01003%,;,5(1),,,,,,,,,,(2),,,,(3),,,(4):[1],.[J].,2005,41(9):2022206.WANGJun,LIUZhen2quan.Investigationofmodifica2tiontoinvolutetypeprofileusingtwin2circulararcsforscrollcompressor[J].ChineseJournalofMechanicalEn2gineering,2005,41(9):2022206.[2],.[J].,2006,42(6):2212226.WANGJun,LIUZhen2quan.Investigationofwrapprofilemodificationusingcircleinvoluteforscrollcompressor[J].ChineseJournalofMechanicalEngineering,2006,42(6):2212226.[3],,.[J].,1998,32(12):90293.GUZhao2lin,YUYong2zhang,JIANGDe2ming.Im2provedcharacteristicsofscrollmachineswithmultiplespiral[J].JournalofXiÂanJiaotongUniversity,1998,32(12):90293.[4],,,.[J].,2005(6):7210.WANGJun,ZHAOMan,LIUXing2wang,etal.Studyonmeshingprofileofmultiplywrapsforscrollcompressor[J].CompressorTechnology,2005(6):7210.[5],.[J].,2007(2):17219.WANGJun,LIXue2qin.Theworkingprocesscharacter2isticofmulti2wrapsscrollcompressor[J].CompressorTechnology,2007(2):17219.[6],.[J].,2005,41(3):2342238.WANGJun,LIUZhen2quan.Theoreticalinvestigationonperfectmeshingprofilemodificationfortwin2scrollcom2pressors[J].ChineseJournalofMechanicalEngineering,2005,41(3):2342238.[7],.[J].,2006,17(15):155321556.WANGJun,LIUZhen2quan.Investigationofmultiplywrapsprofilemodificationusingtwin2circulararcsforscrollcompressor[J].ChinaMechanicalEngineering,2006,17(15):155321556.[8],.[J].:,2008,32(3):1282132.WANGJun,LIXue2qin.Constructionoftaperedthick2nesswrapprofilefortwin2wrapscrollmachinery[J].JournalofChinaUniversityofPetroleum(EditionofNatu2ralScience),2008,32(3):1282132.()221()20096