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http://dx.doi.org/10.5050/KSNVN.2007.17.10.950

Exhaust Noise Reduction of Dry Vacuum Pump  

Ahn, Young-Chan (한양대학교 대학원 기계공학과)
Lee, Hae-Jin (한양대학교 대학원 기계공학과)
Park, Sang-Gil (한양대학교 대학원 기계공학과)
Lee, You-Yub (호원대학교 자동차기계공학부)
Oh, Jae-Eung (한양대학교 기계공학부)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.17, no.10, 2007 , pp. 950-957 More about this Journal
Abstract
This paper considers acoustic characteristics of silencer within a dry vacuum pump. The main objective is to reduce noise in dry vacuum pump using the new designed silencer. First, SPL and sound intensity are measured for noise source identification and the new model silencer is designed corresponding to noise characteristics. 4-pole parameters are used to predict the transmission loss which is one of the interest characteristics of the new silencer. The calculated transmission loss is then used to change main effective factor and optimal value is selected by using design of experiment. By conducting an experiment, it is proved that the new designed silencer has reduced noise level by 6 dB(A) more than the original one.
Keywords
Transmission Loss; 4-pole Parameter; Two-microphone Method;
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