蒸发空调整机气动性能及噪声研究  

Study on Aerodynamic Performance and Noise of Evaporative Air-conditioners

作　　者：沈锦钗 范亚明 赵路 郑闽锋 李祎彧 何华明 廖冬明 SHEN Jinchai;FAN Yaming;ZHAO Lu;ZHENG Minfeng;LI Yiyu;HE Huaming;LIAO Dongming(College of Ecological Environment and Urban Construction,Fujian University of Technology,Fuzhou 350000,China;Aolan Industrial Co.,Ltd.,Fuzhou 350001,China)

机构地区：[1]福建理工大学生态环境与城市建设学院,福州350000 [2]澳蓝实业有限公司,福州350001

出　　处：《建筑科学》2024年第10期186-194,共9页Building Science

基　　金：中央引导地方科技发展项目“高强度钢制车轮轻量化设计制造与清洁化生产关键技术研究及应用”(2023L3057);高校产学合作项目“双碳背景下高温高湿地区农产品加工温湿度调控技术与关键设备研发”(2022N0016)。

摘　　要：为提高蒸发空调的气动性能、改善风机的宽频噪声,利用实验结合CFD数值模拟方法对蒸发空调整机与其单体轴流风机的内部流场和声场进行对比研究,结果显示两者的流场压力分布差异显著,整机的风量和噪声都小于其单体风机。同时,探究了增加叶片前弯角度和前掠角度对整机和单体风机的影响区别,发现在5°~20°前弯角区间,单体风机的风量均比整机大1300 m^(3)/h;而在不同前掠角度下空调整机和单体风机的风量、静压效率和叶片表面最大声功率级的变化趋势均有较大区别,说明在考虑掠角的情况下,不能仅根据单体风机的性能来为空调整机匹配风机,还应考虑整机内部的流道结构参数。本文为后续开展蒸发空调流道结构参数的研究提供很好的参考意义。In order to enhance the aerodynamic performance of evaporative air conditioners and mitigate the broadband noise generated by fans,a comparative analysis was conducted on the internal flow field and sound field of both whole evaporative air-conditioners and their separate axial fans through experiments and CFD numerical simulations.The findings reveal significant disparities in pressure distribution between these two flow fields,with reduced air volume and noise observed in whole air-conditioners compared to those of their separate fans.Additionally,this study investigated how variations in blade forward bending angles and swept-forward angles affected both the whole machines and separate fans.It was discovered that within a 5°~20°range of forward bending angles,the separate fans exhibited an airflow rate 1300 m^(3)/h higher than that of the whole machines.However,under different swept-forward angles,there were notable differences in the airflow rate,static pressure efficiency,and maximum power level on blade surfaces between the whole air conditioners and separate fans.These results indicated that in consideration of swept-forward angles,it is insufficient to solely rely on the performance of separate fans;instead,internal flow channel structural parameters of whole machines.This paper serves as valuable reference for future research on flow channel structural parameters for evaporative air-conditioners.

关 键 词：蒸发空调 轴流风机 性能 宽频噪声 前弯 前掠 

分 类 号：TH443[机械工程—机械制造及自动化]