雙螺旋式壓縮機於不同工況下之噪音特性分析

Noise Characteristic Analysis for Twin Screw Compressor in Different Operating Conditions

王栢村(Bor-Tsuen Wang) ； 謝長鴻(Chang-Hung Hsieh) ； 王文志(Wen-Chi Wang) ； 黃啟順(Chi-Shun Huang) ； 劉家良(Chia-Lian Liu)

《中華民國振動與噪音工程學會論文集》 2012 (2012/06) Pp. 56-61

https://doi.org/10.30028/CSSVANNUAL.201206.0056

摘要

本文主要針對螺旋式壓縮機於不同工況之噪音特性進行分析，並建立螺旋式壓縮機噪音分析方法，採用標準噪音計量測螺旋式壓縮機在不同工況下之1/3八音頻帶找出可能的異音源頻帶，並對不同滑閥負載與不同蒸凝溫度之噪音特性進行探討，得知不同工況下主要噪音貢獻度頻帶皆在630Hz至2000Hz頻帶區間，且無明顯純音效應。另外壓縮機之工況在高滑閥負載與高蒸凝溫度時噪音量也相對較高，由本文之結果對未來在降低螺旋式壓縮機之噪音問題可作為參考依據。

關鍵字

雙旋式壓縮機 ； 噪音量測 ； 1/3八音頻帶 ； 純音效應

並列摘要

This work aims to discuss the noise emission of the twin screw compressor in different loadings and different condense and vaporized temperatures of refrigerant. The noise measurement and analysis by using the 1/3 octave band precision sound level meter is presented to identify the critical band of noise emission levels. Results show the sound pressure levels (SPLs) of the compressor under operation is basically in steady state, and the frequency bands between 630Hz and 2000Hz dominantly contribute to the overall SPLs for all operating conditions. There are no significant pure tone effect observed from 1/3 octave band spectrum. The compressor's SPLs generally increase with the increasing of loadings as well as the raising of condense temperatures. The lower loading that indicates the smaller flow rate results in the more contributions at low frequency bands. The raise of the difference between condense and vaporized temperatures for the refrigerant increases the fluctuation of refrigerant pressures and thus increase the SPLs of the compressor. This work demonstrates the noise characteristics of the twin screw compressor, in particular for the environmental concerns base on 1/3 octave band analysis. The further noise analysis by examining the noise spectra in linear frequency bands may be of interest to discriminate the paths and sources of the compressor noise.

並列關鍵字

twin screw compressor ； noise measurement ； 1/3 octave band ； pure tone effect