家电科技 ›› 2021, Vol. 0 ›› Issue (zk): 279-283.doi: 10.19784/j.cnki.issn1672-0172.2021.99.066

• 第三部分 噪声与振动控制 • 上一篇    下一篇

基于CFD仿真的喷气增焓管压力脉动分析及改善

杨帆1, 曹红军1, 刘金平2   

  1. 1.美的集团机电事业群机电研究院 广东佛山 528000;
    2.华南理工大学电力学院 广东广州 510000
  • 出版日期:2021-11-25 发布日期:2021-12-22
  • 作者简介:杨帆,博士研究生。研究方向:涡旋压缩机压缩仿真、热固耦合仿真和多相流仿真。地址:广东省佛山市顺德区北滘美的工业城东区10号。E-mail:yangfan28@midea.com。

Analysis and improvement of the pressure pulsation in vapor-injection tube based on CFD computation

YANG Fan1, CAO Hongjun1, LIU Jinping2   

  1. 1. Machinery and Electricity Institute of Electromechanical business group in Midea Company Foshan 528000;
    2. School of Electric Power, South China University of Technology Guangzhou 510000
  • Online:2021-11-25 Published:2021-12-22

摘要: 涡旋压缩机喷气增焓管路内部的强压力脉动易与喷射阀阀体共振导致阀体破损,为了解决这一问题,采用CFD仿真研究了喷气增焓管内压力脉动产生和传播的机理,并基于此提出了孔形和孔数目优化等压力脉动衰减技术方案,通过压力脉动测试发现所提出的方案ARI30-120四个转速下OA值(0~1000 Hz)的降低幅度平均约为30%,验证了压力脉动产生机理分析和所建立CFD仿真方法的有效性,研究可为喷气增焓涡旋压缩机压力脉动导致的振动和噪声改善提供理论依据及具体方案。

关键词: 喷气增焓, 压力脉动, 涡旋压缩机, CFD仿真, 空调系统

Abstract: The strong pressure pulsation in the vapor-injection tube of scroll compressor is easy to resonate with the injection valve, resulting in valve body damage. To solve this problem, CFD simulation is used to study the generation and propagation mechanism of pressure pulsation in the vapor-injection tube. Based on the mechanism of pressure pulsation, the technical schemes of pressure fluctuation attenuation, such as optimization of the holes'shape and number, are put forward. Through the pressure fluctuation test, it is found that the reduction in OA value (0~1000 Hz) of ARI condition for all the proposed schemes is 30% on average, which verifies the effectiveness of the mechanism analysis and proposed CFD method. The study can provide theoretical basis and specific scheme for improving the vibration and noise caused by pressure pulsation of the vapor-injection scroll compressor, and can be applied to other scroll compressors.

Key words: Vapor-injection, Pressure pulsation, Scroll compressor, CFD computation, Air conditioner

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