制冷技术2015，Vol.35Issue(4)：43-46,4.DOI:10.3969/j.issn.2095-4468.2015.04.202
共振吸声体降噪研究与应用
Research and Application of Resonance Sound Absorber in Noise Reduction
张亚虎 1任伟1
作者信息
- 1. 美的集团冰箱事业部用户与产品中心,安徽合肥 230601
- 折叠
摘要
Abstract
When the frequency of the incident sound wave is near the natural frequency of resonance sound absorber, it drives the board of the body deformation in the sound field because of the resonance, which transforms part of the sound energy into heat energy to weaken the sound energy and then to reduce the noise. The sound absorption effect is at maximum when the frequency of the sound absorber is close to the resonance frequency. In the present study, the structure and the sound absorption principle of the resonance sound absorber were introduced, and then the measurements for the absorption coefficient of the designed resonance sound absorberswere performed. Finally the resonance sound absorber is applied to the the air duct of a refrigerator, and the air duct noise was drastically reduced, which shows the function and effect of the resonance sound absorbing body on noise reduction.关键词
共振吸声体/共振频率/吸声系数/风道噪声Key words
Resonance sound absorber/Resonance frequency/Absorption coefficient/Air duct noise引用本文复制引用
张亚虎,任伟..共振吸声体降噪研究与应用[J].制冷技术,2015,35(4):43-46,4.
