A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Light composite type wide-frequency-band sound absorber
The invention relates to a light composite type sound absorber, and belongs to the field of environmental noise control. The light composite type sound absorber comprises a micro-perforated compositeboard and a rigid back lining wall, wherein the micro-perforated composite board comprises a micro-perforated front panel, a porous material and a micro-perforated rear panel which are sequentially superposed; sound absorbing holes are formed in the micro-perforated front panel and the micro-perforated rear panel; a back lining air layer is formed in a gap between the micro-perforated composite board and the rigid back lining wall; the thickness of the back lining air layer is at least five times that of the micro-perforated composite board; the micro-perforated composite board is of a sandwich structure, and is formed by superposing the micro-perforated front panel, the porous material and the micro-perforated rear panel, and the micro-perforated composite board is light in mass, and is high in specific strength; and meanwhile, the sound absorber has a relatively wide sound absorbing frequency band in medium-low frequency. The light composite type wide-frequency-band sound absorber issimple to prepare, is convenient to mount, and has wide market prospect in sound absorption and noise reduction in interior decoration and a limited space.
本发明涉及一种轻质复合型吸声体，属于环境噪声控制领域，包括微穿孔复合板和刚性背衬墙；所述微穿孔复合板包括依次叠加的微穿孔前面板、多孔材料和微穿孔后面板；微穿孔前面板和微穿孔后面板上均开设吸音孔；所述微穿孔复合板和刚性背衬墙之间间隙设置，形成背衬空气层，背衬空气层的厚度至少为微穿孔复合板厚度的5倍；微穿孔复合板是一种夹芯结构，由微穿孔前面板、多孔材料、微穿孔后面板叠加构成，微穿孔复合板质量轻薄且比强度高，同时，该吸声体在中低频具有较宽的吸声频带。本发明制备简单，安装方便，在室内装饰和有限空间的吸声降噪方面具有广阔的市场前景。
Light composite type wide-frequency-band sound absorber
The invention relates to a light composite type sound absorber, and belongs to the field of environmental noise control. The light composite type sound absorber comprises a micro-perforated compositeboard and a rigid back lining wall, wherein the micro-perforated composite board comprises a micro-perforated front panel, a porous material and a micro-perforated rear panel which are sequentially superposed; sound absorbing holes are formed in the micro-perforated front panel and the micro-perforated rear panel; a back lining air layer is formed in a gap between the micro-perforated composite board and the rigid back lining wall; the thickness of the back lining air layer is at least five times that of the micro-perforated composite board; the micro-perforated composite board is of a sandwich structure, and is formed by superposing the micro-perforated front panel, the porous material and the micro-perforated rear panel, and the micro-perforated composite board is light in mass, and is high in specific strength; and meanwhile, the sound absorber has a relatively wide sound absorbing frequency band in medium-low frequency. The light composite type wide-frequency-band sound absorber issimple to prepare, is convenient to mount, and has wide market prospect in sound absorption and noise reduction in interior decoration and a limited space.
本发明涉及一种轻质复合型吸声体，属于环境噪声控制领域，包括微穿孔复合板和刚性背衬墙；所述微穿孔复合板包括依次叠加的微穿孔前面板、多孔材料和微穿孔后面板；微穿孔前面板和微穿孔后面板上均开设吸音孔；所述微穿孔复合板和刚性背衬墙之间间隙设置，形成背衬空气层，背衬空气层的厚度至少为微穿孔复合板厚度的5倍；微穿孔复合板是一种夹芯结构，由微穿孔前面板、多孔材料、微穿孔后面板叠加构成，微穿孔复合板质量轻薄且比强度高，同时，该吸声体在中低频具有较宽的吸声频带。本发明制备简单，安装方便，在室内装饰和有限空间的吸声降噪方面具有广阔的市场前景。
Light composite type wide-frequency-band sound absorber
一种轻质复合型宽频带吸声体
NING JINGFENG (author) / LI YUEMING (author)
2020-05-08
Patent
Electronic Resource
Chinese
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
Sound Absorber for Broad-band Frequency Sound Noise
British Library Online Contents | 2004
Combined frequency band type sound absorption composite structure
| European Patent Office | 2020