摘要
电子膨胀阀是空调运行的关键部件之一,也是可能产生噪声的部件之一。空调运行产生的噪声可能会影响其舒适性,而阀门的两相流致噪声问题也带来了一定的困扰。为解决这一问题,改造阀门结构并进行研究,以实现阀门降噪的目标。针对双向节流元件电子膨胀阀的流动特性,提出了优化方案。其中,在阀门管路上加入沟槽结构以实现制热方向的降噪,对阀门阀座进行倒角处理以实现制冷方向的降噪。通过对原模型和优化模型进行数值计算,得出以下结论:电子膨胀阀的原模型和优化模型的两相流致噪声都主要集中在节流后产生;在制冷方向上,优化模型的流场最大噪声从原模型的111.7654 dB减小到109.2905 dB;在制热方向上,阀门下游的噪声明显减小,即优化模型中噪声向下游发展的趋势减小。
The electronic expansion valve is one of the key components in the operation of air conditioning and one of the components that cause noise.The noise generated by the operation of air conditioning may affect its comfort,and the noise caused by the two-phase flow of valves also poses certain difficulties.In response to this issue,the valve structure is studied and modified to reduce its noise.An optimization scheme is proposed according to the flow characteristics of electronic expansion valves with bidirectional throttling components,which involves adding a groove structure on the valve pipeline to reduce noise in the heating direction and chamfer the valve seat to reduce noise in the cooling direction.By numerical calculations of the original model and the optimized model,it is concluded that the two-phase flow induced noises of the original and optimized models of the electronic expansion valve occur mainly after throttling;in the cooling direction,the maximum noise of the optimized model flow field is reduced from 111.7654 dB of the original model to 109.2905 dB;in the heating direction,there is a significant noise reduction in downstream of the valve,indicating a decrease of noise development in the downstream direction in the optimization model.
作者
宋永兴
王均宇
刘正杨
葛秉鑫
马桤政
Song Yongxing;Wang Junyu;Liu Zhengyang;Ge Bingxin;Ma Qizheng(School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China)
出处
《机电工程技术》
2024年第1期1-4,47,共5页
Mechanical & Electrical Engineering Technology
基金
山东省自然科学基金(ZR2021QE157)
压缩机技术国家重点实验室(压缩机技术安徽省实验室)开放基金项目(SKL-YSJ202108)。
关键词
电子膨胀阀
两相流
流致噪声
优化模型
electronic expansion valve
two phase flow
flow induced noise
optimization model
作者简介
宋永兴(1987-),男,博士,研究员,硕士生导师,研究领域为智慧能源装备与系统,已发表论文40余篇,其中SCI 20余篇,EI3篇;王均宇(1998-),女,硕士研究生,研究领域为流体机械。
