家电科技 ›› 2019, Vol. 0 ›› Issue (3): 48-50.doi: 10.19784/j.cnki.issn1672-0172.2019.01.003

• 论文 • 上一篇    下一篇

基于声学超材料的冰箱降噪方案设计

朱小兵, 陈建全, 刘建如, 万彦斌   

  1. 青岛海尔股份有限公司 山东青岛 266101
  • 出版日期:2019-06-01 发布日期:2019-07-03

Design of noise reduction scheme for refrigerator based on acoustic metamaterials

ZHU Xiaobing, CHEN Jianquan, LIU Jianru, WAN Yanbin   

  1. Qingdao Haier Co., Ltd. Qingdao 266101
  • Online:2019-06-01 Published:2019-07-03

摘要: 压缩机是冰箱主要的噪声源,其中中低频噪声由于波长长、能量高,难以通过传统的吸隔声材料衰减,成为限制冰箱噪声突破的瓶颈。声学超材料区别于传统材料,其隔声基于局域共振原理,非常适用于低频降噪。本文首先通过实验确定了600Hz是压缩机辐射噪声的突出频段,然后基于COMSOL多物理场分析软件对声学超材料进行了有限元分析,最后通过实验的方式对降噪方案的可行性进行了验证。实验结果表明,冰箱整机噪声降低了3.6dB,冰箱声品质得到明显的改善。

关键词: 冰箱, 声学超材料, COMSOL, 降噪

Abstract: Compressor is the main noise source of the refrigerator, because of the long wave and high energy, the low-mid-frequency noise is difficult to attenuate through the traditional sound insulation materials, It has become the bottleneck to limit the noise breakthrough of refrigerators. Different from traditional materials,acoustic metamaterials based on locally resonant principle,it is very suitable for low frequency noise reduction. Firstly, determined by the experiment,the noise around 600Hz is the radiated noise of the compressor,then, COMSOL was used to build the acoustic finite element model of the acoustic metamaterial. Finally, noise and performance experiments were carried out to assesse the effectiveness of these noise reduction methods. The experimental results show that the noise of the refrigerator is reduced by 3.6dB, and the sound quality of the refrigerator is improved obviously.

Key words: Refrigerator, Acoustic metamaterials, COMSOL, Noise reduction