Self-Draining Support Beam Asymmetric Cross-Section
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Solution Overview
Problem
Food processing facilities face contamination risks due to standing water accumulating on horizontal surfaces of metal support beams, which can harbor pathogens, and existing solutions that tilt beams to prevent water accumulation compromise load-carrying capacity and increase costs.
Innovation Solution
Designing support beams with self-draining walls and channels that are angled at non-right angles, ensuring no horizontal surfaces for water accumulation, allowing for thorough washing and drainage while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If support beams are designed with horizontal flat surfaces for structural stability, then load-carrying capacity is maintained, but standing water accumulates on the surfaces creating contamination risk
Solution Approach 1:
The support beam is designed with an asymmetric cross-section featuring a self-draining wall at a non-right angle (e.g., 10-80 degrees relative to the bottom wall), creating an asymmetric channel that prevents water accumulation while maintaining structural integrity. This asymmetric geometry ensures water drains along the inclined surface rather than pooling.
Solution Approach 2:
The self-draining wall is configured with a curved or inclined surface rather than a flat horizontal surface, creating a slope that facilitates water drainage. The curved geometry of the channel cross-section ensures no horizontal surfaces exist where water could accumulate, while the structural design maintains adequate load-bearing capacity.
2Object-affected harmful factors
If support beams are tilted away from horizontal and vertical planes to prevent water accumulation, then pathogen growth is reduced, but load-carrying capacity decreases requiring more beams
Solution Approach 1:
The support beam cross-section is segmented into distinct functional walls: a bottom wall, self-draining walls at non-right angles, and top walls. This segmentation allows each wall to be optimized for its specific function - the self-draining walls prevent water accumulation through their angular geometry, while the overall beam structure maintains adequate load-bearing capacity through proper wall thickness and material selection.
Solution Approach 2:
The beam design changes the angular parameter of the self-draining walls from traditional right angles to non-right angles (10-80 degrees). This parameter change enables water to drain effectively along the inclined surfaces while the structural parameters (wall thickness, material properties, overall dimensions) are maintained or optimized to preserve load-carrying capacity, eliminating the need to increase the number of beams.
3Ease of manufacture
If traditional right-angled channels are used in support beams, then manufacturing is simple, but water can accumulate in the channels
Solution Approach 1:
The channel cross-section uses asymmetric angles (non-right angles) for the self-draining walls relative to the bottom wall. This asymmetric configuration prevents water accumulation by creating inherent drainage slopes, while the manufacturing process remains relatively simple using standard forming, bending, or extrusion techniques capable of producing non-standard angles.
Solution Approach 2:
The angular parameter of the channel walls is changed from the traditional 90 degrees to non-right angles (10-80 degrees). This parameter modification enables the self-draining function while the manufacturing complexity increases only minimally, as most fabrication processes can accommodate these angle variations without requiring specialized equipment or procedures.
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 self-draining support beams effectively prevent water accumulation, reducing the risk of pathogen growth and food contamination while maintaining or even improving load-bearing capacity compared to traditional designs, thus reducing the number of beams needed and sanitization time.
Implementation Method 1
The first side wall, the first self-draining wall, the second self-draining wall, and the second side wall form a channel with an open side opposite the first and second self-draining walls
Data Source
AI summary
A structural support beam having a top wall joined to a side wall at an angle substantially different from a right angle. When installed in a facility or machine with the side wall parallel to a vertical reference, no surface on the support beam is parallel to a horizontal reference, thereby providing for rapid and thorough draining of water deposited on any surface of the beam. Some beam embodiments place the top wall at an angle of about twenty degrees above a horizontal reference when the beam is installed. Alternatively, the top wall may be at an angle of about twenty degrees below the horizontal reference. Some beam embodiments have an open side. Alternatively, a bottom wall may be attached to a side wall to form a tubular support beam. A support beam may include a lower beam joined to an upper beam by a connector bar.