雙螺旋壓縮機的噪音問題,一直是相關領域之業界欲了解與解決的重點之一,而雙螺旋壓縮機之噪音振動量測與評估程序建立,有助於廠商提升研發及品管之效率,故建立標準化量測與評估作業程序為本文之主軸。本文首先闡述噪音振動量測與評估之理念,建立噪音振動量測與評估程序,實驗方面進行收受端測試(Receiver test)與路徑測試(Path test)兩部分,其收受端測試為探討雙螺旋壓縮機於不同工作狀況下之噪音特性,再進一步對雙螺旋壓縮機進行噪音與振動之關聯性分析,探討噪音與振動之關聯性,接著比對不同雙螺旋壓縮機種之噪音特性,建立量測分析程序,而路徑測試則針對後續所需評估之機種進行噪音診斷分析,並建立一套診斷分析流程,另外參考國際標準對運作機器噪音問題以聲音功率位準作為噪音評估指標,建立雙螺旋壓縮機之聲音功率位準量測與分析方法,亦是本研究另一重點。本文目的為建立雙螺旋壓縮機噪音振動量測與評估程序,提供壓縮機相關領域廠商一套客觀噪音評估方式。
Noise emission from twin screw compressors is of concern in industry. The establishment of noise and vibration measurement and evaluation procedures is important and beneficial to increase the efficiency of development as well as quality control. To build up a standard operation procedure for measurement and evaluation on noise and vibration is the main theme of this work. This thesis first describes the idea for noise and vibration measurement and develops the receiver test and path test for detail experimental implementation. The receiver test aims to discuss the noise of compressor in different operating conditions as well as the correlation analysis between noise and vibration of compressors. Experimental approaches in the receiver test are accordingly planned. The noise characteristics for different types of twin screw compressors are then presented. The procedure for the path test is also established and conducted to evaluate and diagnosis the possible noise sources. The sound power level of a twin screw compressor is finally determined by referring to ISO standards to build up the measurement and analysis procedures. This work lays out the noise and vibration measurement as well evaluation procedure in particular for the twin screw compressor and leads to provide an objective way to conduct the noise diagnosis for machineries.