Fibre Mesh Roll Noise Damper for Airflow and Noise Balance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing noise dampers for compressed air systems in utility vehicles, such as brake systems, face challenges in achieving effective noise reduction while maintaining efficient air flow, and their production is complex and costly due to uniform fibre mesh structures or gradual density variations.
Innovation Solution
A noise damper with a fibre mesh roll unit featuring at least two distinct mesh density regions, arranged to optimize noise damping performance by varying fibre mesh density along the air flow path, using thermoplastic fibres that can be knitted or woven, allowing for controlled mesh structure and production methods that facilitate efficient assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a uniform fibre mesh structure is used in the noise damper, then the production process is simple, but the noise damping performance is insufficient
Solution Approach 1:
The fibre mesh is divided into multiple sections with different mesh densities along the air flow direction. The first section has a first mesh density, the second section has a second mesh density different from the first, and optionally a third section has a third mesh density. This local variation in mesh density optimizes noise damping performance at different stages of air flow without complicating the overall production process.
2Object-affected harmful factors
If the fibre mesh density is increased to improve noise damping, then the noise reduction performance increases, but the air flow resistance becomes too great
Solution Approach 1:
Different sections of the fibre mesh have different mesh densities optimized for their specific functions. The first section with lower mesh density allows efficient air flow passage, while subsequent sections with higher mesh densities provide progressive noise damping. This local optimization ensures that high density is only used where needed for noise reduction, not throughout the entire mesh structure.
Solution Approach 2:
The fibre mesh is segmented into multiple sections (first, second, and optionally third sections) with progressively different mesh densities. This segmentation allows the air flow to be gradually decelerated and noise to be progressively damped, avoiding the sudden high resistance that would occur with a uniformly high-density mesh while still achieving effective noise reduction.
3Object-affected harmful factors
If a gradual density variation in noise-reduction material is implemented, then the noise damping performance is optimized, but the production becomes complex and expensive
Solution Approach 1:
Instead of implementing a continuous gradual density variation which would be complex to manufacture, the fibre mesh is divided into discrete sections with distinct mesh densities. The first section has a first mesh density, the second section has a second mesh density, and optionally a third section has a third mesh density. This segmented approach achieves progressive noise damping with simpler, more cost-effective manufacturing processes.
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 solution enhances noise damping performance without significantly impeding air flow, while simplifying the production process and reducing costs by utilizing thermoplastic fibres with adjustable mesh densities, ensuring effective noise reduction and airflow management.
Implementation Method 1
a fibre mesh roll unit (124, 224, 324, 424, 524, 624) having at least two mesh density regions (130, 132, 230, 232, 330, 332, 430, 432, 530, 532, 630, 632), at least one inlet (18, 120, 118, 120), at least one outlet (20, 120, 118, 120) and a housing (12, 14, 112, 114) The at least one fibre mesh roll unit (124, 224, 324, 424, 524, 624) is accommodated within the housing (12, 14, 112, 114) of the noise damper to dampen noise emissions of air flowing through from the at least one inlet (18, 120, 118, 120) to the at least one outlet (20, 120, 118, 120)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a noise damper (100) for compressed air systems, in particular for brake systems of utility vehicles, comprising at least one fibre mesh roll unit (124, 224, 324, 424, 524, 624) having at least two mesh density regions (130, 132, 230, 232, 330, 332, 430, 432, 530, 532, 534, 630, 632, 634), at least one inlet, at least one outlet (120), and a housing, wherein the at least one fibre mesh roll unit (124, 224, 324, 424, 524, 624) is accommodated within the housing of the noise damper (100) to dampen noise emissions of air flowing through from the at least one inlet to the at least one outlet (120). The present invention further relates to a method (700, 800) for producing a fibre mesh roll unit (124, 224, 324, 424, 524, 624) for a noise damper (100) for compressed air systems, in particular for brake systems of utility vehicles.