CAJ | 학술논문

根据空气流场中空气动力性噪声的产生机理，分析并计算了离心式通风机叶轮中，气流相对加速度系数的变化对风机噪声的影响。编制一套计算软件并以此设计出一台离心式通风机。该风机采用较高效率的调速装置可节能30%左右，并进一步降低了实际工况下风机的噪声。
근거공기류장중공기동력성조성적산생궤리，분석병계산료리심식통풍궤협륜중，기류상대가속도계수적변화대풍궤조성적영향。편제일투계산연건병이차설계출일태리심식통풍궤。해풍궤채용교고효솔적조속장치가절능30%좌우，병진일보강저료실제공황하풍궤적조성。
The change of airflow convective accelerating factor to the effect of fan noise is analyzed & calculated according to the mechanism of aerodynamic noise generated in airflow field.A program is developed according to the models,and a centrifugal fan is also designed by means of the program.Furthermore,a speed adjusting unit of higher efficiency is used to the fan to save energy about 30% and further reduced the fan noise in actual operation.