A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Impedance composite wideband noise elimination structure
The invention provides an impedance composite wideband noise elimination structure which comprises an outer frame, a perforated sound absorption plate, multiple longitudinal sound absorption modules and a transverse sound absorption module. The outer frame is formed by spicing multiple perforated plates and is provide with an opening. The perforated sound absorption plate is fixed in the outer frame and comprises a back portion facing the opening of the outer frame and a front portion located on the side reverse to the back portion. The multiple longitudinal sound absorption modules are arranged between the outer frame and the front portion of the perforated sound absorption plate, the longitudinal sound absorption modules are arranged at intervals, and one end of each longitudinal sound absorption module is fixed to the outer frame. The transverse sound absorption module is arranged between the back portion of the perforated sound absorption plate and the opening of the outer frame and is fixed in the outer frame. The impedance composite wideband noise elimination structure is at least fixedly mounted on an indoor wall and ceiling, sound consumption and attenuation are achieved based on material sound absorption and porous plate resonance, and compared with wedge and common flat plate structures, the number of adopted sound absorption materials is smaller, occupied space is smaller, and the cut-off frequency is lower.
本发明提供了一种阻抗复合宽频消声结构，包括：外框架、穿孔吸声板，多个纵向吸声模块和横向吸声模块，所述外框架由若干穿孔板拼接形成，具有一个开口部，穿孔吸声板固定于外框架内，包括朝向所述外框架开口部的后部和位于相反侧的前部，多个纵向吸声模块设置于外框架和穿孔吸声板前部之间，纵向吸声模块之间间隙排列布置，纵向吸声模块的一端固定于外框架，横向吸声模块设置于穿孔吸声板的后部和外框架的开口部之间并固定在外框架内，所述阻抗复合宽频消声结构至少固定安装在室内的墙壁以及天花板上，本发明基于材料吸声和孔板共振实现声音的消耗衰减，较尖劈及普通平板结构，使用吸声材料更少，占用空间更小,截止频率更低。
Impedance composite wideband noise elimination structure
The invention provides an impedance composite wideband noise elimination structure which comprises an outer frame, a perforated sound absorption plate, multiple longitudinal sound absorption modules and a transverse sound absorption module. The outer frame is formed by spicing multiple perforated plates and is provide with an opening. The perforated sound absorption plate is fixed in the outer frame and comprises a back portion facing the opening of the outer frame and a front portion located on the side reverse to the back portion. The multiple longitudinal sound absorption modules are arranged between the outer frame and the front portion of the perforated sound absorption plate, the longitudinal sound absorption modules are arranged at intervals, and one end of each longitudinal sound absorption module is fixed to the outer frame. The transverse sound absorption module is arranged between the back portion of the perforated sound absorption plate and the opening of the outer frame and is fixed in the outer frame. The impedance composite wideband noise elimination structure is at least fixedly mounted on an indoor wall and ceiling, sound consumption and attenuation are achieved based on material sound absorption and porous plate resonance, and compared with wedge and common flat plate structures, the number of adopted sound absorption materials is smaller, occupied space is smaller, and the cut-off frequency is lower.
本发明提供了一种阻抗复合宽频消声结构，包括：外框架、穿孔吸声板，多个纵向吸声模块和横向吸声模块，所述外框架由若干穿孔板拼接形成，具有一个开口部，穿孔吸声板固定于外框架内，包括朝向所述外框架开口部的后部和位于相反侧的前部，多个纵向吸声模块设置于外框架和穿孔吸声板前部之间，纵向吸声模块之间间隙排列布置，纵向吸声模块的一端固定于外框架，横向吸声模块设置于穿孔吸声板的后部和外框架的开口部之间并固定在外框架内，所述阻抗复合宽频消声结构至少固定安装在室内的墙壁以及天花板上，本发明基于材料吸声和孔板共振实现声音的消耗衰减，较尖劈及普通平板结构，使用吸声材料更少，占用空间更小,截止频率更低。
Impedance composite wideband noise elimination structure
一种阻抗复合宽频消声结构
YANG CHENG (author) / CHEN JIANGYAN (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
Novel noise elimination structure and elimination method for road
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