Mineral Fibre Ceiling Tile Resonators for Broad-Spectrum Sound Insulation
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Solution Overview
Problem
Existing sound insulating elements in suspended ceiling systems suffer from reduced sound insulation performance due to compressional wave resonance, leading to inconsistent acoustic properties across different frequency ranges.
Innovation Solution
Incorporating acoustic resonators with tailored resonance frequencies into the sound insulating elements to mitigate compressional wave resonance, thereby improving sound insulation by compensating for performance drops in specific frequency ranges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acoustic resonators are added to the sound insulating element, then sound insulation performance is improved, but device complexity increases
Solution Approach 1:
The patent integrates acoustic resonators directly into the ceiling tile body, merging the sound insulation function with the structural element. The resonators are embedded within the tile matrix, combining two functional components into a single integrated unit, thereby improving sound insulation without proportionally increasing overall device complexity.
Solution Approach 2:
The ceiling tile is designed to serve multiple functions simultaneously: it provides structural support as a ceiling element, delivers sound insulation across broad frequency ranges, and incorporates acoustic resonators for enhanced performance. This multi-functionality allows a single component to address multiple acoustic requirements without requiring separate dedicated devices for each function.
2Adaptability or versatility
If the body is made with varied shapes and materials, then design flexibility is improved, but sound insulation performance deteriorates due to compressional wave resonance
Solution Approach 1:
The patent applies local quality by distributing acoustic resonators throughout the body at specific locations to address compressional wave resonance issues. Rather than requiring the entire body to have uniform properties, the resonators are strategically placed within the material matrix to locally counteract resonance effects, enabling design flexibility while maintaining sound insulation performance.
Solution Approach 2:
The invention uses composite material structures where the body is formed from a combination of base materials and embedded acoustic resonators. This composite approach allows the use of varied materials for the body (such as gypsum, plaster, or other ceiling tile materials) while the integrated resonator component compensates for potential sound insulation deficiencies, enabling design versatility without sacrificing acoustic performance.
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
Enhances sound insulation performance by controlling acoustic properties across a broader frequency spectrum, allowing for varied shapes and materials while maintaining effective sound reduction.
Implementation Method 1
Each resonator is configured to have a resonance frequency essentially corresponding to a compressional wave frequency of the body. The compressional wave frequency may negatively affect the sound insulating properties of the body of the sound insulating element, this negative effect can be remedied by the provision of acoustic resonators which have a resonance frequency corresponding to the compressional wave frequency of the body.
Data Source
AI summary
A sound insulating element includes a single body made of a mineral fibre material having acoustically insulating properties, the body including a front surface, a rear surface and a side surface connecting the front and rear surfaces. A suspended ceiling system to be suspended from a structural ceiling includes a plurality of ceiling tiles, and at least one of the ceiling tiles is a sound insulating element.