Triangular Compact Noise Silencer for Air Blower
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Solution Overview
Problem
Commercially available noise silencers for air blowers are too large and complex, making them difficult to install in space-constrained environments and costly, while providing insufficient sound attenuation, often reducing noise levels by only 10 dB.
Innovation Solution
A compact noise silencer with an L-shaped housing, triangular side walls, and sound adsorbent materials like open cell polymeric foam with convex projections, which is simpler in design and construction, allowing it to clamp onto standard air blower inlets with minimal pressure drop and improved sound attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional noise silencers are used, then sound attenuation is achieved (10 dB reduction), but the device size becomes too large for space-constrained installations
Solution Approach 1:
The patent transitions from a conventional linear cylindrical silencer design to a triangular cross-section configuration. This dimensional change in the cross-sectional geometry allows for a more compact overall form factor while maintaining the necessary internal volume for sound attenuation. The triangular shape enables the silencer to fit into space-constrained areas around blower inlets where conventional cylindrical designs cannot be installed.
2Object-affected harmful factors
If conventional noise silencers are used, then sound attenuation is provided, but the device complexity and cost increase
Solution Approach 1:
The silencer is divided into distinct functional segments: a triangular housing structure, separate sound-absorbing material sections in the triangular and annular regions, and a integrated filter assembly. This segmentation allows each component to be optimized independently and simplifies manufacturing and assembly processes compared to conventional integrated cylindrical designs.
Solution Approach 2:
Different sound-absorbing materials are placed in different regions of the silencer based on local acoustic requirements. The triangular region contains one type of sound-absorbing material while the annular region contains another, allowing optimization of sound attenuation performance for different frequency ranges and directions without increasing overall device complexity.
3Object-affected harmful factors
If conventional noise silencers are used, then sound attenuation is achieved, but installation difficulty increases due to space constraints
Solution Approach 1:
The triangular cross-section design allows the silencer to be installed in configurations that conventional cylindrical silencers cannot accommodate. The angular geometry enables mounting in tight spaces around blower inlets, on ductwork surfaces, and in orientations that maximize space utilization while maintaining effective sound attenuation 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
The compact noise silencer achieves sound attenuation equal to or greater than conventional silencers, reducing noise levels by 10 to 15 dB, while being significantly shorter and less expensive, facilitating easier installation and retrofitting.
Implementation Method 1
a sound adsorbent material thereon, including a first back wall and a second back wall
Data Source
AI summary
A compact noise silencer for a blower, including an L-shaped back wall having a sound adsorbent media and side walls defining a triangular enclosure, an inlet opposite one portion of the back wall and a central outlet opposite the back wall having a filter directing air into a blower. In the disclosed application, the blower directs air into a burner which heats the air for various applications.