:2010-11-09:(1972-),,,:。:,,,、、,,。:;;:TH432:A:1671-1084(2011)01-0032-040,,,、。,,100dB,,。,,,,,,,。,,,,,。1、。,,[1]。:,,,。,,,,。1.1,,“”。1.1.1,,,。,,。,。[2]———。,,。,,,1.8dB,3.1dB。(,545006)[]JOURNALOFLIUZHOUVOCATIONAL&TECHNICALCOLLEGE11120112Vol.11No.1Feb.201132--[3],。,4~5dB(A),,14dB(A)。Sandra[4],,。5dB,。Qi[5]、,。,,1~11dB()。,[6]2~5dB,,,,。[7],,,。,,3dB(A)。1.1.2,,,,。[8],。,,,。10,7dB(A)。[9]:1);2);3),;4);5)。,,5dB(A)。[10,11],。,。,,,1~4dB(A),,。[12],,,,,4.1dB(A)。,,[13,14]。,[15],,2dB(A),。Tangen[16],,,2dB。,,,。1.2,,,、。1.2.1,,,。[17],:1113333--(A) +4~5dB[3];2~5dB[4];1~11dB[5] 5dB[6]--3.1dB[2]-----3dB[7]----7dB[8]---------1~4dB[10,11]------4.1dB[12]-2dB[15]------------5dB[9]--------------2dB[16]--4dB[17];5~7dB[18]-----------15~20dB[20];--3.5dB---:17dB[21];23dB[22],A4dB(A)。[18],,5~7dB(A)。,,。1.2.2,,,,[19],,。,。[20],,、,,15~20dB(A)。[21],,,,3.5dB(A)17dB(A)。[22],,23dB(A)。,,,。1.3,1。,,,。2,、、,:1),。,,20dB,,、、1342011234--。2),,。3),,,。4)。:[1],,.[J].,2007,28(5):170-173.[2],,,.[J].,2009,28(5):32-34.[3],,,.[J].,2010,38(3):7-11.[4]SandraV.S.,RafaelB.T.,CarlosS.M.,etc.Reductionoftheaerodynamictonalnoiseofaforward-curvedcentrifugalfanbymodificationofthevolutetonguegeometry[J].Ap-pliedacoustics,2008(69):225-232.[5]QiD.T.,MaoY.J.,LiuX.L.,etc.Experimentalstudyonthenoisereductionofanindustrialforward-curvedbladescentrifugalfan[J].Appliedacoustics,2009(70):1041-1050.[6],,.4ZTL-1800[J].,2005,36(1):91-94.[7],.[J].,2004,32(2):10-12.[8],,,.()———[J].,1998,26(2):9-12.[9],.[J].,2009,4(3):49-51.[10],,,.[J].,2008(3):100-103.[11],,,.[J].,2007,35(9):1-4.[12],,,.[J].,2009,26(1):40-44.[13],,,.[J].,1999,39(4):6-9.[14],,,.[J].,2007,41(11):1275-1278.[15],,,.[J].,2010.38(5):1-17.[16]TangenM,MasahiroI,DaisakuS,etc.Noisecharacter-isticsofcentrifugalblowerwithlowsoliditycascadediffuser(NoisereductionbymeansofsmallgroovelocatedatLsdBladeleadingtip)[J].Journalofthermalscience,2009,18(4):321-324.[17],,,.()———[J].,1998(3):6-9.[18],,,.[J].,2009,43(3):92-96.[19].[J].,2006(6):31-32.[20],,,.[J].,2001,2:18-26.[21].[J].,2001(2):27-29.[22].[J].,2004,20(2):14-16.ASummarizationandAnalysisonNoiseReductionMethodsforAerodynamicNoiseofCentrifugalFanWUKun(LiuzhouVocational&TechnicalCollege,LiuzhouGuangxi545006,China)Abstract:Thispaperexpoundsthenoisereductionmethodstotheaerodynamicnoiseofcentrifugalfanthroughintroducingtwotypesofnoisereductionmethods.Accordingtoaerodynamicnoisefeaturesofcen-trifugalfanahigh,theauthorsummedupsomeofthetypicalcontrolmethodsofaerodynamicnoiseinthepastdecade.Twotypesofnoisereductionmethodswhichincludeunconventionalvolutetongue,changingtheimpellerintheform,andaddingscrollacousticmufflerimportandexportareclassifiedbysoundsourceandtransmissionpath.Finally,accordingtotheanalysisofitsnoisereductioneffect,theau-thordrawssomecomparativeconclusions.Keywords:centrifugalfan;aerodynamicnoise;noisereductionmethod:1113535--