Grain Bin Aeration Duct Network for Uniform Airflow
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Solution Overview
Problem
Existing grain bin aeration systems often result in uneven aeration due to pressure reduction on one side of the bin, leading to inconsistent grain quality.
Innovation Solution
The aeration apparatus includes a primary duct spanning across the bin, with secondary ducts extending circumferentially from both ends of the primary duct, allowing air to be directed across the diameter and around the perimeter, ensuring even airflow distribution through a single point of entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If air is directed into the bin through a single inlet port into a perimeter manifold, then the aeration system can be simplified with fewer components, but the pressure reduction on the opposing side of the bin results in uneven aeration and inconsistent grain quality
Solution Approach 1:
The system divides the airflow path into multiple segments: a primary duct spanning the diameter of the bin, and multiple secondary ducts extending from the primary duct to the perimeter manifold. This segmentation allows air to be distributed more evenly by breaking the single flow path into multiple controlled segments, resolving the contradiction between system simplicity and aeration uniformity.
Solution Approach 2:
The invention adds a dimensional element by introducing a primary duct that spans across the bin diameter, creating a two-dimensional airflow distribution network rather than a simple one-dimensional perimeter manifold. This allows air to be introduced at multiple points across the bin cross-section, improving pressure balance and aeration uniformity while maintaining relative system simplicity.
2Area of stationary object
If a perimeter manifold extends about the full perimeter of the bin, then air can be distributed around the entire bin, but the single-sided fan connection creates pressure imbalance and uneven airflow distribution
Solution Approach 1:
The primary duct acts as an intermediary element between the single fan inlet and the perimeter manifold. It mediates the airflow by collecting air at one location and redistributing it through multiple secondary ducts to various points around the bin perimeter, thereby balancing pressure while maintaining full coverage.
Solution Approach 2:
The invention merges the functions of the primary duct and perimeter manifold by integrating them into a unified aeration network. The primary duct and secondary ducts work together as a combined system to distribute air evenly around the bin, achieving both full perimeter coverage and pressure balance through the integrated structure.
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
This configuration ensures even distribution of aeration air across the bin, maximizing the quality of stored grain by balancing pressure and airflow on both sides.
Implementation Method 1
the resulting reduction in pressure at the opposing side of the bin can result in uneven aeration within the bin
Implementation Method 2
the primary duct receives a primary flow of air from the aeration fan directed across the primary duct from the first end to the second end of the primary duct
Data Source
AI summary
An aeration apparatus for a grain storage bin with a hopper bottom in which the apparatus includes (i) a primary duct extending diametrically across the bin in proximity to a top of the hopper bottom, (ii) two first secondary ducts in communication with the primary duct and extending circumferentially of the bin in two opposing directions from the first end of the primary duct towards respective discharge openings, and (iii) two second secondary ducts in communication with the primary duct and extending circumferentially of the bin in two opposing directions from the second end of the primary duct towards respective discharge openings. An inlet duct communicates the bin wall between an external aeration fan and the first end of the primary duct within the bin such that the fan is directed horizontally and coaxially with the primary duct.