The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2024
Filed:
Aug. 31, 2020
Tongji University, Shanghai, CN;
TONGJI UNIVERSITY, Shanghai, CN;
Abstract
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.