Offset Venting Dual Canopy Wind Resistance
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Solution Overview
Problem
Conventional canopies without vents are prone to being blown away by wind, while vented designs allow precipitation to pass through and can trap wind between layers, causing disruption and damage.
Innovation Solution
A dual canopy system with offset venting and inter-canopy suspension structures that keep vents aligned to block rain and allow wind to escape, featuring coronal-shaped suspension elements that enclose lower vent holes and support upper canopy sections, ensuring wind interception from any direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If vents are provided in canopies to allow wind passage, then wind resistance is improved, but precipitation can pass through and cause harm
Solution Approach 1:
The canopy system is divided into multiple tiers (upper canopy and lower canopy) with vents strategically positioned in each layer. The upper canopy vents are offset from the lower canopy vents, creating a segmented ventilation pattern that allows wind passage while preventing direct precipitation flow through both layers simultaneously.
Solution Approach 2:
An intermediary blocking structure is introduced between the upper and lower canopies to prevent precipitation from passing through the vent holes. This blocking structure acts as a mediator that allows wind to pass through the vents while intercepting and redirecting precipitation away from the protected space below.
2Object-affected harmful factors
If multiple tiered canopies with offset venting are used, then precipitation blocking is improved, but wind can still be trapped between layers causing disruption
Solution Approach 1:
The blocking structure is designed with differentiated local properties: it provides complete blocking for precipitation flow paths while incorporating specific openings or channels that allow wind to pass through. The structure has local regions of high blocking capability and local regions of wind permeability, simultaneously addressing both precipitation and wind requirements.
Solution Approach 2:
The blocking structure incorporates flexible or adjustable elements that can dynamically respond to wind conditions. The structure is designed to maintain its blocking function for precipitation while allowing wind flow paths to remain open, preventing pressure buildup and disruption between the canopy layers.
3Strength
If vent holes are localized in the lower canopy, then wind resistance from specific directions is improved, but effectiveness against winds from various directions is limited
Solution Approach 1:
The ventilation system is segmented across multiple canopy layers with vents distributed throughout both the upper and lower canopies. This segmentation creates multiple independent ventilation zones that can respond to winds from various directions, improving overall adaptability while maintaining localized wind resistance capabilities.
Solution Approach 2:
The vent placement is extended into the vertical dimension by positioning vents in both the upper canopy and lower canopy at different heights and offset positions. This three-dimensional distribution of vents allows the system to intercept and vent winds from multiple directions simultaneously, enhancing versatility beyond what a single-layer localized vent system could achieve.
Data Source
AI summary
A wind-proof dual canopy structure with offset venting in both upper and lower canopies and with inter-canopy suspension structures, keeps the upper and lower vents properly aligned and blocks the perimeter of the lower vents so that rain cannot drip through these vents onto protected persons and/or objects. These inter-canopy suspension structures include elements which are themselves vented, allowing wind that would otherwise get trapped between the canopy layers to escape.