Building with sound-absorbing building system
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Solution Overview
Problem
Existing sound-absorbing systems in buildings fail to effectively absorb a wide range of frequencies, particularly low frequencies, and are cumbersome to install, often requiring structural adaptations and leading to increased density and loss of interior space.
Innovation Solution
A sound-absorbing system utilizing a supporting frame with crossbeams spaced 40 to 75 cm apart, supporting panels coated with a cotton or cotton-wood fiber mixture, and optionally filled with additional fiber panels, allowing the panels to flex and vibrate for broad frequency absorption, with easy on-site installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sound-absorbing panels are used, then sound absorption is achieved, but the system has high density and large dimensions causing structural stress and loss of interior space
Solution Approach 1:
The patent uses a composite structure combining a lightweight supporting frame made of metal profiles with natural fiber panels (cotton and/or wood fibers). This composite system replaces traditional high-density sound-absorbing materials while maintaining acoustic performance through the synergistic combination of structural support and acoustic absorption properties of natural fibers.
Solution Approach 2:
The patent employs thin panel structures (9-24 mm thickness) made of natural fibers that can flex and vibrate to absorb sound. These thin, flexible panels are mounted on a frame with spacing, allowing them to move freely and absorb acoustic energy without requiring the bulk of traditional rigid sound-absorbing materials.
2Reliability
If traditional sound-absorbing systems are installed, then sound absorption is achieved, but structural adaptations are required complicating installation
Solution Approach 1:
The patent divides the sound-absorbing system into modular components: a supporting frame made of standardized metal profiles (e.g., 20x20 mm or 40x40 mm) and separate panel elements. This segmentation allows the frame to be assembled like a skeleton structure using simple connection elements, and panels to be independently attached, eliminating the need for complex structural adaptations during installation.
Solution Approach 2:
The metal profile frame serves multiple functions: providing structural support, defining the geometry of the installation, and enabling easy assembly through standardized connections. This universal frame structure can be adapted to various wall or ceiling configurations without requiring custom structural modifications, simplifying the installation process.
3Reliability
If thick sound-absorbing panels are used, then sound absorption is improved, but interior space is reduced
Solution Approach 1:
The patent transitions from using thick panels (absorbing sound through mass) to a three-dimensional framework structure where sound absorption occurs in the spaces between frame elements and through the surface area of thin panels. This dimensional change allows acoustic performance to be achieved without increasing linear thickness, preserving interior space while maintaining sound absorption effectiveness.
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 system achieves uniform surface absorption across various frequencies with reduced weight and size, minimizing structural stress and preserving interior space, while being easily installable without structural adjustments.
Implementation Method 1
a coating which is made from a mixture of 300-700 g of cotton blend and 4-6 liters of water per m2, wherein the cotton blend consists of 80-95% cotton fibers or a mixture of 80-95% cotton and wood fibers and 5-18% cellulose with a fiber length of 0.2-4 mm
Implementation Method 2
allowing the panels to flex and vibrate for broad frequency absorption
Data Source
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AI summary
The invention relates to a sound-absorbing building system (100) for the interior of a building (200), comprising a support frame (101) arranged on a building surface of the building (200), wherein the support frame (101) is formed from at least two crossbeams (102, 112). According to the invention, the crossbeams (102, 112) are arranged substantially parallel to each other at a distance of 40 to 75 cm from each other, and the support frame (101) is attached to the interior surface of the building, with panels (103, 113) being attached to the crossbeams (102, 112). These panels have a coating (104, 114) on the side opposite the crossbeams (102, 112) facing the interior of the room, and this coating is produced by means of a mixture consisting of 300-700 g of cotton blend and 4 to 6 liters of water per m².wherein the cotton mixture comprises between 80-95% cotton fibers or a mixture of 80-95% cotton fibers and wood fibers and between 5-18% cellulose with a fiber length of 0.2-4 mm, and that the panels preferably consist of polyester and have a thickness between 9-24 mm, and that at least one empty and/or partially empty space (105, 115) is formed on the side opposite the coating (104, 114) between the crossbeams (102, 112).