热泵干衣机用风机气动噪声仿真及降噪叶轮设计  

Aerodynamic noise simulation and noise reduction impeller design of fan for heat pump dryer

作　　者：周文艺 詹飞龙[1] 丁国良[1] 邓德喜 李聪 熊琎 杨展博 ZHOU Wenyi;ZHAN Feilong;DING Guoliang;DENG Dexi;LI Cong;XIONG Jin;YANG Zhanbo(Shanghai Jiao Tong University,Institute of Refrigeration and Cryogenics,Shanghai 200240;Wuxi Little Swan Electric Appliance Co.,Ltd.,Wuxi 214000)

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200240 [2]无锡小天鹅电器有限公司,江苏无锡214000

出　　处：《家电科技》2024年第5期36-40,共5页Journal of Appliance Science & Technology

摘　　要：热泵干衣机的性能提升需要兼顾提高风机风量和降低风机气动噪声两方面的需求,但风量增大通常伴随气动噪声增大的问题,使得这两个需求难以同时满足。通过改变影响风量和气动噪声的风机叶轮结构参数,对风量和气动噪声进行仿真分析,分别找到风机叶轮结构参数对风量和气动噪声的影响规律,再基于该规律提出兼顾风量提升和气动噪声降低的优化风机叶轮结构设计方法。结果表明,影响风量和气动噪声的最主要因素是叶轮宽度和叶轮出口角,风量随着叶轮宽度增大和叶轮出口角度增大而增大;气动噪声随着叶轮宽度增大和出口角减小而增大;提出的优化结构相比于原始结构,风量增大14.2 m3/h,监测点噪声平均降低2.08 dB(A)。提出的兼顾风量和噪声需求的风机叶轮优化设计方法,可为干衣机实际运行中满足高风量低噪声的风机结构设计提供指导和参考。The performance improvement of the heat pump dryer needs to take into account the needs of increasing the air volume of the fan and reducing the noise of the fan.However,the increase of the air volume is usually accompanied by the increase of the aerodynamic noise of the fan,which makes it difficult to meet these two needs at the same time.By changing the structural parameters of the fan impeller that affect the air volume and the aerodynamic noise of the fan,the air volume and aerodynamic noise are simulated and analyzed,and the influence law of the structural parameters of the fan impeller on the air volume and noise is found respectively.Based on this law,an optimized fan impeller structure design method that takes into account both air volume increase and noise reduction is proposed.The results show that the most important factors affecting air volume and noise are impeller width and impeller inlet angle.The air volume increases with the increase of impeller width and impeller inlet angle.The noise increases with the increase of impeller width and the decrease of inlet angle.Compared with the original structure,the air volume of the proposed optimized structure increases by 14.2 m3/h,and the noise of the monitoring point decreases by 2.08 dB(A)on average.The optimization design method of fan impeller considering the demand of air volume and noise is proposed,which provides guidance and reference for the design of fan structure with high air volume and low noise in the actual operation of dryer.

关 键 词：热泵干衣机 风机 气动噪声 风量 优化设计 

分 类 号：TM925.34[电气工程—电力电子与电力传动] TB535[理学—物理]