influence of piezoelectric atomizer pores on ultrasonic atomization effect

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1、2014SymposiumonPiezoelectricity，AcousticWaves,andDeviceApplications,Oct．30-Nov．2,Belting,CHINAINFLUENCEoFPIEZOELECTRICAToMIZERPoRESONULTRASONICATOMIZATIONEFFECTYan—daLANGl，2，．Jian．huiZHANGl1StateKeyLaboratoryofMechanicsandControlofMechanicalStructures，NanjingUniversityofAeronauticsandAs

2、tronautics，Nanjing210016，China2SchoolofEconomics，NanjingUniversityofFinance&Economics，Nanjing210046，China’Correspondingauthor,E-mail：langyanda@hotmail．corn；Tel．：86．187．24005747．Piezoelectricatomizingdevicehasextensiveapplicationinmanyfieldsandisbeneficialtopeople’slivelihood．Theareasofa

3、erospace，medicaiandhealth，energysavinghaveraisedahighdemandforatomizer．Therelationshipbetweengeometricparametersofatomizerporesandparticlesizeofatomizeddropletiscrucialthatwehaven’tknownyet．Inthisstudy,theauthormeasuredparametersofatomizerporescompletely,thendesignedexperimentstomeasure

4、theparticlesizeofatomizeddroplet．Statisticalcharacteristicparametersanddistributiontypesofporesweretestedaccordingtothedataanalysisandnonparametrictest：meanwhile，therelationcurvebetweenparticlesizeandstatisticalcharacteristicparameterswereanalyzed．Theresultsshowsasfollows，poresdiameterf

5、itsstandardnormaldistribution，particlesizeofatomizeddropletandupperporesaveragediameterispositivelycorrelatedunderacertainsprayheight,degreeoftaperangletogetherwithlowerporesaveragediameterhasnoobviousrelationwithparticlesizeofatomizeddroplet．Whenupperporesaveragediameteris7．92microns．p

6、articlesizeofatomizeddropletis7．52microns．Keywords：Piezoelectric；Atomization；Ultrasound；Pores；Taperangle1．INTRoDUCTIoNPiezoelectricatomizingdevicehasextensiveapplicationinmanyfieldsandisbeneficialtopeople’s1ivelihood．Theareasofaerospace，medicalandhealth，energysavinghaveraisedahighdemand

7、foratomizer．AircrafiTurbineEngine，fuelinjectionofreciprocatingengineusedinconstructionmachinery,foginhalationtherapy,fogpreparationusedforskingraftingprotectionandimmunization【l】，theseareexamplesofusingatomizingdeviceandmicronanometeriojection．Besides，the3Dprinterhasiustbeenunf