CAJ | 학술논문

若干年来，我们针对离心风机气动噪声控制问题进行了一系列理论和实验研究，提出了一种识别风机内部主要气动噪声源并通过判断主要噪声源强度变化对风机进行降噪改进的简捷方法，明确了离心风机的主要气动噪声源在蜗壳上，而不是在叶轮上，通过对离心风机气动噪声的产生及传播机理的研究，在理论上为正确进行离心风机气动噪声的控制及预测做出了有意义的推进。以上述理论为核心，本文进行了大量的实验研究，形成了一套对离心风机进行降噪改进的关键技术。
약간년래，아문침대리심풍궤기동조성공제문제진행료일계렬이론화실험연구，제출료일충식별풍궤내부주요기동조성원병통과판단주요조성원강도변화대풍궤진행강조개진적간첩방법，명학료리심풍궤적주요기동조성원재와각상，이불시재협륜상，통과대리심풍궤기동조성적산생급전파궤리적연구，재이론상위정학진행리심풍궤기동조성적공제급예측주출료유의의적추진。이상술이론위핵심，본문진행료대량적실험연구，형성료일투대리심풍궤진행강조개진적관건기술。
In recent years, a series of theoretical and experimental study on aerodynamic noise control of centrifugal fan was carried out, and a simple method of identifying main aerodynamic noise sources in internal of fan and reducing the noise by determining the changes of intensity of main noise sources was pointed out. It was clearly that the main aerodynamic noise sources of centrifugal fan was on the volute but the impeller. The study on the generation and propagation mechanism of aerodynamic noise of centrifugal fan had advanced the proper control and forecast for the aerodynamic noise of centrifugal fan in theory. Based on the theory, a large number of experiments were carried out and a set of key techniques of reducing noise of centrifugal fan was formed.