Eavestrough Cover With Reverse C Recess For Water Flow Reversal
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Solution Overview
Problem
Eavestroughs often overflow during heavy rainfall due to insufficient surface tension causing rainwater to spill over, despite designs intended to exclude debris through covers with apertures that fail to accommodate large volumes of water effectively.
Innovation Solution
An eavestrough cover with a recess having a reverse C-shaped configuration and diagonally arranged apertures, which reverses water flow and directs it towards the center, preventing overflow and excluding foreign matter by appropriate aperture sizing and placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a cover with apertures is used to exclude debris, then foreign matter is prevented from entering the eavestrough, but rainwater overflow occurs during heavy rainfall
Solution Approach 1:
The cover is segmented into multiple functional zones: a first region with apertures for debris exclusion, a second region with enlarged aperture for enhanced water intake, and a third region acting as an overflow channel. This segmentation allows each zone to perform its specific function optimally, preventing both debris entry and water overflow simultaneously.
Solution Approach 2:
The invention adds a vertical dimension to the cover design by creating a three-dimensional recessed structure with multiple levels. The first, second, and third regions are arranged in vertical and horizontal configurations, utilizing spatial dimensionality to accommodate both debris exclusion and high-volume water drainage functions.
2Quantity of substance
If the aperture size is increased to accommodate heavy rainfall, then rainwater drainage is improved, but foreign matter can enter the eavestrough
Solution Approach 1:
Different regions of the cover have different aperture characteristics tailored to their specific functions. The first region has smaller apertures optimized for debris exclusion, while the second region has an enlarged aperture optimized for high-volume water intake. This local differentiation of quality allows each area to perform its intended function without compromising the other.
Solution Approach 2:
The cover is divided into distinct functional segments where the first region handles debris exclusion with smaller apertures, the second region handles primary water intake with enlarged apertures, and the third region provides overflow management. This segmentation resolves the contradiction by distributing different aperture sizes to different functional zones.
3Ease of manufacture
If a simple flat cover is used, then the design is simple and easy to manufacture, but it cannot direct water flow effectively during heavy rainfall
Solution Approach 1:
The cover incorporates a curved recessed structure with a bottom surface that follows a specific arc configuration. This curvature is designed to guide water flow along a predetermined path, utilizing gravitational force and surface geometry to direct water from the first region through the second region to the third region, thereby enhancing drainage efficiency while maintaining manufacturability.
Solution Approach 2:
The recessed structure is pre-formed during manufacturing with the bottom surface configured at specific angles and curvatures. This preliminary configuration of the flow path geometry ensures that water is automatically directed along the intended trajectory during operation, eliminating the need for additional active flow control mechanisms.
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 solution effectively directs all rainwater into the eavestrough during heavy rainfall while preventing foreign matter from entering, ensuring efficient drainage and preventing overflow.
Implementation Method 1
when large volumes of water are encountered, the surface tension is generally insufficient to cause all of the rainwater to flow into the eavestrough
Implementation Method 2
a foraminous membrane extending between the eavestrough rear wall and the eavestrough front wall
Data Source
AI summary
An eavestrough having a front wall, rear wall and top wall with a foraminous membrane extending between the rear wall and front wall, and a recess formed between the eavestrough top wall and the foraminous membrane which permits reversal of water flow flowing towards the recess.