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Soundproof panel

A technology of sound insulation panels and back panels, which is applied in the direction of sound insulation, noise absorption devices, and sound-generating devices. It can solve the problems of no public structure, etc., and achieve excellent sound-absorbing performance and easy recycling.

Inactive Publication Date: 2008-10-01
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] However, the publications of any one of the above-mentioned Patent Documents 1 and 2 only disclose the basic concept and do not disclose the specific structure.

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0093] Next, an example in which the oblique incidence sound absorption rates of the sound insulating wall 1 according to Embodiment 1 of the present invention and the sound insulating wall according to Embodiment 6 of the present invention were measured will be described. This oblique incidence sound absorption rate measurement test is shown in the explanatory diagram of the measurement test status Figure 11 The device of the structure shown is carried out. That is, the reflected sound in the regular reflection direction when the pulse sound is incident on the complete reflection surface (concrete floor) at a certain angle and the reflected sound when the sample (sound insulation wall) is installed on the complete reflection surface are respectively measured. As a result, the oblique incidence sound absorption rate α(θ) was obtained from the following equation. However, Es(f) and Er(f) in the following equations are the energy spectrum of the reflected pulse of the perfect ...

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Abstract

The purpose of the invention is to provide a sound insulation panel which can exhibit superior sound insulating performance in a wide frequency band and whose sound insulating material is easily recycled. The sound insulation panel 2 constituted by putting the sound absorbing material in a case 2a which has a rectangular frame part and a back plate 2c on one side of the frame part and also has an opening side on the other side covered with a detachable front plate 2d having a plurality of sound wave passages where sound waves pass is characterized in that the sound absorbing material is formed by alternately stacking a longitudinally corrugated aluminum thin plate 2e which has a plurality of corrugations formed in one direction of the case 2a and also has many fine through holes and a laterally corrugated aluminum thin plate 2f which has a plurality corrugations formed in the other direction orthogonal to the corrugation processing direction of the longitudinally corrugated aluminum thin plate 2e and also has many fine through holes.

Description

technical field [0001] The present invention relates to improvement of sound insulating panels and sound insulating walls, and more specifically, to a sound insulating panel having high recyclability, light weight, and capable of absorbing noise in a wide range of frequency bands from low frequency to high frequency. Background technique [0002] Conventionally, as a sound-absorbing structure, a structure in which a porous sound-absorbing material such as glass wool is combined with a material excellent in weather resistance, water resistance, and heat resistance has been used. However, in such a sound-absorbing structure, although the weather resistance, water resistance, and heat resistance of glass wool can be enhanced, they cannot be sufficiently enhanced, and the problem of recyclability cannot be solved. In addition, in the case of using a resonator-type sound-absorbing structure or a plate-vibration-type sound-absorbing structure, etc., which are sound-absorbing struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16B32B3/28E01F8/00G10K11/172
CPCE01F8/007B32B3/266B32B3/28B32B7/005B32B15/20B32B2307/102B32B2607/00E04B1/86E04B2001/8428E04B2001/8433E04B2001/8442G10K11/168B32B7/03E01F8/00G10K11/16G10K11/172
Inventor 畑山直史山口善三山极伊知郎田中俊光坪田贤亮
Owner KOBE STEEL LTD
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