家电科技 ›› 2022, Vol. 0 ›› Issue (3): 36-41.doi: 10.19784/j.cnki.issn1672-0172.2022.03.006

• 论文 • 上一篇    下一篇

空调室外机低频噪声控制及管路配重设计

杨俊涛, 陈志伟, 高智强, 程诗   

  1. 珠海格力电器股份有限公司 广东珠海 519070
  • 出版日期:2022-06-01 发布日期:2022-06-20
  • 作者简介:杨俊涛(1987—),男,硕士,工程师。研究方向:空调减振降噪设计及振动噪音测试。地址:广东省珠海市香洲区前山金鸡西路789号。E-mail:yangjuntao1234@126.com。

Low-frequency noise control and pipeline counterweight design of outdoor unit of air conditioner

YANG Juntao, CHEN Zhiwei, GAO Zhiqiang, CHENG Shi   

  1. Gree Electric Appliances, Inc. of Zhuhai Zhuhai 519070
  • Online:2022-06-01 Published:2022-06-20

摘要: 为了解决空调室外机制热工况下压缩机94 Hz~104 Hz运行时,整机在频段196 Hz~208 Hz之间的异常噪声问题,首先,测试室外机关键部件的振动,初步找出与异常噪声相关度较大的部件(管路);其次,对管路进行模态分析,找出与异常噪声频率较为接近的管路模态;然后,通过管路工作变形(ODS)分析,得出其在异常噪声频率下的振动形态,并与管路模态振型进行对比,以最终确定管路异常点的位置;最后,在管路异常点的位置上布置合适的配重(橡胶圈、管夹)进行优化。结果表明,在排气管的第2弯处固定40 g的橡胶圈,及在排气管与大阀门管之间固定1个管夹,可有效控制异常低频噪声,噪声峰值可下降20 dB,为管路配重正向设计提供参考。

关键词: 空调室外机, 管路, 异常噪声, 模态振型, 工作变形(ODS)

Abstract: In order to solve the abnormal noise problem of the whole machine in the frequency band of 196 Hz~208 Hz when the compressor operates at 94 Hz~104 Hz under heating condition of the outdoor unit of the air conditioner, firstly, test the vibration of key components of outdoor unit and preliminarily find out the components (pipelines) with high correlation with abnormal noise. Secondly, the modal analysis of the pipeline is carried out to find out the pipeline modal which is close to the abnormal noise frequency. Then, through the Operational Deflection Shape (ODS) of pipeline, the vibration form under abnormal noise frequency is obtained, and compared with the modal shapes of pipeline, so as to finally determine the location of pipeline abnormal points. Finally, appropriate counterweights, such as rubber rings and pipe clamps, are arranged at the position of abnormal points of the pipeline. The results show that fixing a 40 g rubber ring at the second bend of the exhaust pipe and a pipe clamp between the exhaust pipe and the large valve pipe can effectively control the abnormal low-frequency (196 Hz~208 Hz) noise, and the noise peak can be reduced by 20 dB, which provides a reference for the forward design of pipeline counterweight.

Key words: Air conditioner, Pipelines, Abnormal noise, Modal shapes, Operational Deflection Shape (ODS)

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