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Silencing apparatus

A sound-absorbing device and sound-absorbing technology, applied to sound-proof doors/windows, windows/doors, building components, etc., can solve the problems of cost increase, time-consuming construction work, large installation space of shutters, etc., and achieve the effect of improving the sound-absorbing effect

Inactive Publication Date: 2008-08-13
EMU KEE SEIKO
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, since the inside of the main body of the door leaf is made hollow to form a passage, and the passage itself is used as a sound-absorbing space while the shutter is installed at the end of the passage, so its structure spreads over the entire door leaf and cannot be used alone as a shutter.
Therefore, the increase in cost is a matter of course, and there is also a problem of lack of versatility to construction sites
In addition, when construction is performed, since a considerable installation space is required for the size of the louver exposed on the surface, not only is it time-consuming in construction work, but it is also not good in terms of ventilation efficiency.

Method used

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Embodiment Construction

[0018] The noise reduction device 1 according to one embodiment of the present invention has a louver structure. On the first side surface 3a of the main body case 3 and the second side surface 3b on the rear side thereof, a plurality of ventilation openings 2 are provided in the left-right direction. However, only the first side surface 3a is visible in FIG. 1 , and the second side surface 3b behind it is not visible. As shown in FIG. 1 , a noise-side ventilation opening 2 a is provided on the first side 3 a. When the noise reduction device 1 is installed, the noise-side vent 2a is directed toward the side where the noise source exists. Moreover, although it is not shown in FIG. 1, the ventilation hole 2b of the quiet side is provided in the 2nd side surface 3b.

[0019] FIG. 2 shows a part of a horizontal section of the noise reduction device 1 shown in FIG. 1 . Of the plurality of vanes 4 constituting the louver structure, only two vanes 4 are shown in FIG. 2 . The blad...

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Abstract

The present invention relates to a sound attenuation device. The noise reduction device has a louver structure in which a plurality of blades are arranged, and ventilation passages formed between the blades are used to ventilate the inside and outside of the building. Each of the blades includes a pair of sound-absorbing portions disposed on the noise side and the silent side, respectively, and a sound wave introducing portion connecting the sound-absorbing portions. Each blade body is arranged such that the longitudinal axis of one of the mufflers extends in an oblique direction parallel to the longitudinal axis of the other muffler, but the one axis is offset from the other.

Description

technical field [0001] The present invention relates to a noise reduction device formed with a louver structure in which a plurality of blades are arranged to form a ventilation passage between the blades. More specifically, it involves installing the louver structure constituting the noise reduction device on the wall of the building structure, so that the noise source on one side of the louver structure passes through the ventilation passage between the blades to the other side together with the outside air. (Silent side) A sound-absorbing device that reduces the energy of propagating noise sound waves. Background technique [0002] In the past, the sound insulation wall has been widely known as a device for preventing noise generated from automobiles, construction sites, and other noise sources. Install a wall made of light-transmitting resin board or metal parts beside the road or around the construction site, so that the noise generated on one side of the wall cannot b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E06B5/20E06B7/082
Inventor 竹田唱一大日方幸人荒井刚中村佑纪
Owner EMU KEE SEIKO
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