公开(公告)号：US12118973B2

公开(公告)日：2024-10-15

申请号：US17772517

申请日：2020-08-31

申请人： TONGJI UNIVERSITY

发明人： Yong Li ,  Sibo Huang ,  Zhiling Zhou

IPC分类号： G10K11/172 ,  G10K11/162

CPC分类号： G10K11/172 ,  G10K11/162

摘要： A Helmholtz resonator and a low-frequency broadband sound-absorbing and noise-reducing structure based on the same is provided. The Helmholtz resonator includes a Helmholtz resonator body, at least one embedded tube is disposed in the Helmholtz resonator body, and an inner surface of an opening of the Helmholtz resonator body wraps around an outer side of one of the embedded tubes; and all the embedded tubes are not in contact with each other. The low-frequency broadband sound-absorbing and noise-reducing structure includes a rigid framework, and at least two Helmholtz resonators are disposed in parallel in the framework. The Helmholtz resonator not only achieves a better low-frequency broadband sound absorption and noise reduction effect, but also reduces a thickness of the Helmholtz resonator more effectively. The low-frequency broadband sound-absorbing and noise-reducing structure enhances a sound absorption effect of each weak sound-absorbing Helmholtz resonator, and further achieves more efficient sound absorption.