Air Handler U-Bend Design to Reduce Reverse Flow and Noise
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Solution Overview
Problem
Modern air handler devices suffer from inefficient structural designs that lead to significant energy loss, noise, and increased operational costs due to reverse flows and poor aerodynamic performance at duct transitions.
Innovation Solution
The implementation of a U-bend design in air handler devices, featuring rounded corners and intermediate baffles, which reduces reverse flows and sound absorption, along with optimized fan placement and intake systems to enhance efficiency and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional sharp-cornered duct transitions are used, then manufacturing is simpler, but reverse flow occurs causing energy loss and reduced fan efficiency
Solution Approach 1:
The patent applies curvature by replacing sharp corners with rounded corners at duct transitions. This geometric modification eliminates flow separation and reverse flow that occur at sharp edges, thereby reducing energy loss while maintaining manufacturing feasibility through standard forming processes.
Solution Approach 2:
The patent modifies the geometric parameters of duct transitions by introducing rounded corners with specific radii. This parameter change optimizes flow characteristics and reduces energy loss without significantly complicating the manufacturing process.
2Object-affected harmful factors
If conventional intake devices are used, then structure is simpler, but noise levels are significantly higher
Solution Approach 1:
The patent employs curved surfaces in the intake device design, including rounded transitions and smooth contours. These curved geometries reduce turbulence and vortex formation, thereby lowering noise generation while adding moderate structural complexity.
Solution Approach 2:
The patent introduces intermediate flow conditioning elements such as flow straighteners or diffusers between the intake opening and fan. These intermediary components smooth the flow and reduce noise-generating turbulence, though they increase device complexity.
3Productivity
If optimized aerodynamic designs with rounded corners are implemented, then fan efficiency improves by 5-10%, but manufacturing complexity increases
Solution Approach 1:
The patent implements rounded corners and smooth transitions in the housing structure to optimize aerodynamic flow. These curved features improve fan efficiency by reducing flow separation and turbulence, while the rounding can be achieved through standard manufacturing processes.
Solution Approach 2:
The patent optimizes geometric parameters such as corner radii and transition angles to enhance aerodynamic performance. These parameter adjustments improve fan efficiency without requiring fundamentally new manufacturing techniques.
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 U-bend design significantly improves fan efficiency by 5-10%, reduces noise levels, and lowers operational costs by minimizing energy consumption and heat rejection loads.
Implementation Method 1
the housing can have a rounded corner determined to mitigate a reverse flow of the fluid at corners of the duct
Implementation Method 2
The outer surface can be sloped, causing the flow of the fluid entering the intake duct in the radial direction to change to the direction along the longitudinal axis
Data Source
AI summary
Architectures and techniques are presented that can facilitate improved design and function of certain air handler devices. Architectures directed to an improved air handler device can be designed to improve temperature control demands such as, e.g., concurrently heat and cool air and reducing device dimensions (e.g., size, weight) that can reduce costs and mitigate shipping and installation difficulties. Architectures directed to U-bend structures can further reduce footprint on leasable space and provide improved acoustics, service access, and reduced energy consumption and infrastructure costs.