Soundproofing Panel With Perforated Mesh Structure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing acoustic insulation panels face challenges in achieving sufficient rigidity, effective noise absorption, and optimal size, weight, and cost, particularly when using mesh structures between facing panels, as they often result in insufficient mechanical strength and 'hollows' in noise frequency absorption.
Innovation Solution
A sound insulation panel design featuring two facing panels separated by a substantially flat solid mesh structure with through holes, which includes sound-absorbing materials and resonating pads to enhance noise absorption, and can be configured with specific materials and dimensions to resonate at specific frequencies, improving both rigidity and absorption performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid mesh structure is used between facing panels to improve rigidity, then mechanical strength is improved, but the mass of the insulation panel increases
Solution Approach 1:
The patent employs a mesh structure with through-holes forming a porous configuration that provides rigidity while maintaining low weight. The porous nature of the mesh allows sound transmission and absorption while the rigid framework ensures mechanical strength without requiring solid, heavy materials.
Solution Approach 2:
The patent combines the rigid mesh structure with sound-absorbing material to create a composite assembly that achieves both mechanical rigidity and acoustic performance. This composite approach allows the structure to fulfill multiple functions (structural support and sound absorption) without increasing mass proportionally.
2Object-affected harmful factors
If traditional insulation materials are used between facing panels, then noise absorption is provided, but 'hollows' appear in noise frequency absorption
Solution Approach 1:
The patent applies sound-absorbing material specifically within the mesh structure's cells and through-holes, creating localized absorption zones that target specific frequency ranges. This local application allows optimization of absorption characteristics at different frequencies without requiring uniform thick insulation throughout.
Solution Approach 2:
The patent transitions from traditional planar insulation layers to a three-dimensional mesh structure with through-holes that extends in multiple dimensions. This dimensional change allows sound waves to interact with the absorption material from multiple paths and angles, improving frequency coverage and eliminating hollows in the absorption spectrum.
3Object-affected harmful factors
If thick facing panels are used to improve noise absorption, then acoustic absorption is improved, but size, weight and cost increase prohibitively
Solution Approach 1:
The patent uses the mesh structure's porous configuration to achieve acoustic absorption without requiring thick solid panels. The through-holes and open cells allow sound waves to penetrate and interact with absorption material, providing effective noise reduction while maintaining a thin, lightweight overall structure.
Solution Approach 2:
The mesh structure acts as an intermediary between the facing panels, providing both structural support and facilitating sound absorption. Instead of relying on thick facing panels for absorption, the mesh structure mediates the acoustic interaction, allowing thin panels to work effectively with distributed absorption material.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The proposed panel achieves up to 168% improvement in sound absorption at 1600Hz and effectively 'polarizes' the acoustic field, providing enhanced noise attenuation with a lighter and more rigid structure, while allowing for customizable performance across different frequencies.
Implementation Method 1
the mesh structure participates in the noise absorption function
Implementation Method 2
each of them being integral with a facing panel, said structure comprising through holes forming a mesh such that the mesh structure participates in the noise absorption function
Implementation Method 3
the material and dimensions of the sound absorption pad layer can be chosen to resonate substantially at the breathing frequency
Data Source
Figure 1~3
Figure 2~4
Figure 5~6
AI summary
The aim of the invention is to improve acoustic insulation panels of the prior art by proposing a rigid, light panel, the acoustical absorption performance of which is improved thanks to the use of a grid the structure of which enables the same to contribute to the noise absorption function. To this end, the present invention relates to an acoustic insulation panel including two facing panels (2, 4), separated by a solid structure (6) that is substantially planar and has two surfaces (7b, 7c) that are substantially planar and parallel, each of which are rigidly connected to a facing panel, said structure (6) including through-holes (6a) that form a mesh, such that the meshed structure contributes to the noise absorption function.