Low-frequency broadband ventilation, heat-dissipating and sound-insulating structure

A ventilation and heat dissipation, broadband technology, applied in the direction of sound insulation, sound-generating equipment, building components, etc., can solve the problem that the sound insulation technology cannot meet the requirements of low-frequency and broadband sound insulation, and achieve good ventilation and heat dissipation, easy processing and production, low-frequency broadband sound insulation good effect

Pending Publication Date: 2018-08-14
BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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Problems solved by technology

[0006] The purpose of the present invention is to provide a low frequency broadband ventilation and heat dissipation sound insulation structure to solve the problem that

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  • Low-frequency broadband ventilation, heat-dissipating and sound-insulating structure

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Embodiment Construction

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] Such as Figure 1-3 As shown, the low-frequency broadband ventilation and sound insulation structure provided by the present invention includes several Helmholtz resonators 1 arranged periodically and sound-absorbing panel structures 2 arranged in the Helmholtz resonators 1. The surroundings of the sound-absorbing plate structure 2 ar...

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Abstract

The invention belongs to the sound insulation technological field and relates to a low-frequency broadband ventilation, heat-dissipating and sound-insulating structure. The low-frequency broadband ventilation, heat-dissipating and sound-insulating structure includes a plurality of periodically-arranged Helmholtz resonators and sound absorbing plate structures disposed in the Helmholtz resonators;the upper end and lower end of the Helmholtz resonator are respectively provided with at least one extension path extending toward the inside of the cavity of the Helmholtz resonator, and wherein theextension path is communicated with the outside; and at least one ventilation vent hole is formed in the middle of the sound absorbing plate structure. According to the low-frequency broadband ventilation, heat-dissipating and sound-insulating structure of the invention, the sound absorbing plate structures are arranged in the Helmholtz resonators, so that a sound insulation problem in the Helmholtz resonators caused by high-frequency modes can be solved, and the low-frequency broadband sound insulation of the whole structure can be realized; and the functions of ventilation and heat dissipation are realized by the ventilation and heat-dissipating holes formed in the sound absorbing plate structures and the extension paths in the Helmholtz resonators.

Description

technical field [0001] The invention relates to the technical field of sound insulation, in particular to a low-frequency broadband ventilation and heat dissipation sound insulation structure. Background technique [0002] Traditional sound insulation technology can effectively isolate high-frequency components in noise, while low-frequency noise has the characteristics of long propagation distance, strong sound transmission ability, and difficult isolation, which has always been a difficult problem in noise control. [0003] The sound insulation of traditional sound insulation materials in the low frequency band is controlled by the law of mass density, and it is difficult to achieve low frequency broadband sound insulation with lightweight materials. At the same time, when some equipment needs sound insulation treatment, it must meet certain heat dissipation requirements. The sound barrier also needs to withstand a certain amount of wind pressure while insulating the soun...

Claims

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Application Information

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IPC IPC(8): G10K11/162E04B1/88
CPCG10K11/162E04B1/88
Inventor 盖晓玲邢拓李贤徽王芳蔡泽农张斌
Owner BEIJING MUNICIPAL INST OF LABOUR PROTECTION
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