声学超材料次波长吸声结构的优化设计

家电科技 ›› 2019, Vol. 0 ›› Issue (2): 74-77.

声学超材料次波长吸声结构的优化设计

陈兴^1,2, 闫茂松^1,2, 范强^1,2, 王伟^1,2, 马刚³

1.数字化家电国家重点实验室山东青岛 266101;
2.青岛海尔智能技术研发有限公司山东青岛 266101;
3.青岛海尔股份有限公司山东青岛 266101

出版日期:2019-04-01 发布日期:2019-07-02

Optimized design of acoustic metamaterial sub-wavelength sound absorptive structure

CHEN Xing^1,2, YAN Maosong^1,2, FAN Qiang^1,2, WANG Wei^1,2, MA Gang³

1. National key laboratory of digital household Qingdao 266101;
2. Qingdao Haier Intelligent Technology Research and Development Co., Ltd. Qingdao 266101;
3. Qingdao Haier Co., Ltd. Qingdao 266101

Online:2019-04-01 Published:2019-07-02

摘要/Abstract

摘要： 针对吸油烟机的降噪,本文设计了2款声学超材料次波长吸声模块,其中一款的基础吸声单元设计主要依据为四分之一波长共振管理论,另一款的基础吸声单元设计主要依据为Helmholtz共振腔理论。两者吸声模块的吸声系数频谱特征,皆系根据产品的噪声辐射频谱特性进行选择性的优化,以强化产品的降噪效果或是提高产品声品质。设计的最低频率波长超过吸声模块厚度的20倍以上。

关键词: 声学超材料, 优化设计, 吸声结构, 选择性频宽带, 次波长结构

Abstract: Two sub-wavelength sound absorptive structures were designed for the range hood. One basic sound absorptive unit is based upon the quarter wave length resonator theory, and the other basic sound absorptive unit is based upon the Helmholtz resonator theory. Having maximum noise reduction level and better sound quality, the sound absorption coefficient of these two sound absorptive structures were designed optimally according to the selective noise spectrum of a range hood. The design lowest wave length is more than twenty times than the thickness of the sound absorptive structure.

Key words: Acoustic metamaterial, Optimized design, Sound absorptive structure, Selective frequency band, Sub-wavelength structure

陈兴, 闫茂松, 范强, 王伟, 马刚. 声学超材料次波长吸声结构的优化设计[J]. 家电科技, 2019, 0(2): 74-77.

CHEN Xing, YAN Maosong, FAN Qiang, WANG Wei, MA Gang. Optimized design of acoustic metamaterial sub-wavelength sound absorptive structure[J]. Journal of Appliance Science & Technology, 2019, 0(2): 74-77.

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