Building Panel with Honeycomb Core and Slot Recesses
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Solution Overview
Problem
Existing sound-damping building panels lack optimal sound insulation properties across a broad frequency spectrum, and there is a need for improved sound absorption capabilities while maintaining environmental sustainability and cost-effectiveness.
Innovation Solution
A building board with a three-layer structure, featuring a visible first layer made of renewable lignocellulose materials with elongated, narrow slot-like recesses, a middle layer with a honeycomb structure having connected cell cavities, and a rear layer made from the same material as the first layer, optimized for sound absorption by varying the geometry and material properties of the recesses and honeycomb cells to enhance sound penetration and absorption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing sound-damping building panels are used, then sound insulation is provided, but optimal sound insulation properties across a broad frequency spectrum are not achieved
Solution Approach 1:
The building panel is divided into three distinct layers: a first layer with spaced-apart recesses, a middle layer with honeycomb structure, and a rear third layer. This segmentation allows each layer to contribute differently to sound absorption across various frequency ranges, achieving optimal performance across a broad frequency spectrum.
Solution Approach 2:
The panel combines different structural configurations (recesses, honeycomb cells) and materials (lignocellulose-based materials, plastic materials, metal foams) in a composite multi-layer structure. This composite approach enables the panel to handle different frequency ranges effectively, with each material and structure optimized for specific acoustic properties.
2Ease of manufacture
If renewable lignocellulose materials are used for the first layer, then environmental sustainability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent specifies particular parameter ranges for the lignocellulose-based materials (density, thickness, recess dimensions) to optimize both acoustic performance and manufacturability. By defining concrete parameter ranges, the invention balances environmental sustainability with ease of manufacturing through standardized production parameters.
3Reliability
If the honeycomb structure has connected cell cavities, then sound absorption is enhanced, but structural complexity increases
Solution Approach 1:
The middle layer employs a honeycomb structure with connected cell cavities, creating a porous configuration that enhances sound absorption. The interconnected pores allow sound waves to penetrate deeper into the structure, increasing energy dissipation across a broad frequency spectrum while maintaining a relatively simple geometric pattern.
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 board achieves high sound absorption across different frequency levels, with specific absorption coefficients for individual third-octave bands, while utilizing renewable materials and maintaining a low surface weight, thus offering improved acoustic performance and environmental benefits.
Implementation Method 1
a middle second layer arranged behind or under the first layer with a honeycomb structure having a plurality of planar arranged cells
Implementation Method 2
in which the highest possible degree of sound destruction is achieved, e.g. through multiple sound reflections within a cell or honeycomb structure
Implementation Method 3
the walls of the individual, elongated, narrow, slot-like recesses in the visible, first layer
Data Source
Figure 1a~1h
Figure 2
Figure 3
AI summary
The invention relates to a new building panel, characterized in that: - the visible first layer (1) has a plurality of sound inlet and passage recesses (10) that fully penetrate it; - the next, in particular the middle, second layer (2) which adjoins it over a surface, is formed with at least two sublayers (22, 23), namely: - with a honeycomb structure sublayer (22) and - with a sublayer either closer to or directly adjacent to the first layer (1) and/or - with a sublayer adjacent to the honeycomb structure sublayer (22) on the opposite side and facing away from the first layer (1), or - with a sublayer adjacent to the rear, third layer (3) over a surface, and/or - with an acoustically damping flow resistance sublayer (23) arranged between two honeycomb structure sublayers (221, 222) of the honeycomb structure sublayer (22).is formed from a sound-absorbing, preferably foil- or non-woven-like, optionally fibrous, and/or porous and/or foamed, material.