乾式真空幫浦抗性消音器之設計及性能探討

An Investigation in Design and Performance of Reactive Muffler for Dry Pump

呂秉樺(Bing-Hua Lyu)

指導教授 ： 康 淵

中原大學/工學院/機械工程研究所/碩士(2005年)

https://doi.org/10.6840/cycu200500652

摘要

消音器用於抑制空氣動力性的噪音，能有效阻止或減弱噪音向外傳播。本文根據實驗所量測之排氣噪音，使用有限元素法進行消音器結構設計及性能探討。首先以四種基本型消音器傳聲損失的解析解，驗證分析結果之準確性。並針對原消音器之幾何類型及尺寸參數，歸納出設計參數對消音器之消音性能影響，進而作為消音器之設計依據，以設計出符合降噪頻率之消音器。

關鍵字

排氣噪音 ； 傳聲損失 ； 有限元素法 ； 消音器

並列摘要

The muffler is used to eliminate the air dynamic noise and it’s characteristic is reducing or keeping from noise spreading outside. According to the measured exhaust noise from experiment, this study investigates the structural design and performance of muffler by using finite element method (FEM). First, the analytic solutions of transmission loss of four basic-type mufflers are determined to verify the analysis results by using FEM. By changing the geometry and dimension of original muffler the affection of geometry style and parameter of muffler on noise elimination are generalized, which can be the design basis of muffler to conform the demand of reducing noise frequency.

並列關鍵字

transmission loss ； exhaust noise. ； finite element method ； muffler

參考文獻

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