Duct Assembly With Tuned Resonators for Noise and Leak Detection
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Solution Overview
Problem
Existing noise reduction methods for fluid flow in pipes are often bulky, inefficient, and not tuned to specific frequencies, leading to suboptimal performance and durability issues.
Innovation Solution
A duct assembly with integrated Helmholtz resonators of varying sizes and shapes within the pipe, tuned to specific frequency ranges to dampen acoustic noise, combined with thermal insulation and leak detection features, providing a compact and efficient noise reduction mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional noise reduction treatments are used, then noise attenuation is achieved, but the device becomes heavy and bulky
Solution Approach 1:
The patent applies parameter changes by tuning the resonators to specific frequency ranges rather than using broad-spectrum noise reduction treatments. This allows for more efficient noise attenuation at targeted frequencies with reduced material requirements, thereby decreasing weight while maintaining effectiveness.
Solution Approach 2:
The patent implements local quality by placing resonators at specific locations within the duct assembly where they can most effectively attenuate noise at particular frequencies. This targeted approach allows for reduced overall material usage compared to uniform noise reduction treatments, thereby reducing weight.
2Object-affected harmful factors
If traditional noise reduction treatments are used, then noise attenuation is achieved, but the device becomes bulky
Solution Approach 1:
By changing the approach from broad-spectrum to frequency-specific noise reduction through tuned resonators, the patent achieves effective noise attenuation with compact dimensions. The resonators are designed to target specific frequency ranges, allowing for a more space-efficient solution compared to traditional bulky treatments.
Solution Approach 2:
The patent uses local quality by strategically positioning resonators within the duct assembly to maximize noise attenuation efficiency. This targeted placement allows for effective noise control in a compact configuration, reducing the overall volume required compared to uniform noise reduction treatments.
3Object-affected harmful factors
If traditional noise reduction treatments are used, then noise attenuation is achieved, but the treatments deteriorate in service
Solution Approach 1:
The patent merges the noise reduction function with the duct structure itself by integrating resonators into the duct assembly. This integration creates a more durable solution where the noise reduction features become part of the structural system, reducing the likelihood of deterioration compared to separate treatment layers.
Solution Approach 2:
The patent employs composite materials in the construction of the duct assembly, combining materials with appropriate acoustic properties and structural durability. The resonators are constructed from materials that maintain their acoustic performance and structural integrity over time, improving reliability and resistance to deterioration.
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 duct assembly effectively attenuates noise across specific frequency ranges while maintaining structural integrity and detecting leaks, enhancing the overall performance and reliability of noise reduction in fluid flow systems.
Implementation Method 1
A duct assembly with integrated Helmholtz resonators of varying sizes and shapes within the pipe, tuned to specific frequency ranges to dampen acoustic noise
Data Source
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AI summary
An additively manufactured duct assembly includes a noise reduction features, insulating features, and leak detection features. The duct assembly includes a first duct (20) that defines a first duct first resonator (50) and a second duct (22) that is disposed about and is spaced apart from the first duct (20). The spacing apart of the second duct (22) from the first duct (20) provides an insulating air gap therebetween. The second duct (22) may also be provided with a port (100) to connect the duct assembly to a leakage detection system.