Storm-resistant louver system
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Solution Overview
Problem
Conventional louver units struggle with rainwater ingress during extreme weather events, leading to damage and airflow restriction, with existing solutions either blocking airflow or allowing excessive fluid entry.
Innovation Solution
A drainage apparatus comprising a sill with sloped and back sill members, a baffle, and a sill pan, configured to drain 8.8 inches of fluid per hour while allowing up to 1% to pass through, adhering to the AMCA 550 standard, and incorporating a perforated sheet to manage airflow and fluid entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a louver/damper system is used to prevent rain entry, then rain protection is improved, but airflow is blocked
Solution Approach 1:
The system employs movable louvers that can dynamically adjust their position and angle. During normal operation, louvers are open to maximize airflow. During extreme weather events, louvers close to prevent rain ingress. This dynamic adaptability resolves the contradiction by allowing the system to optimize for either airflow or rain protection depending on conditions.
Solution Approach 2:
The louver system changes its operational parameters (opening angle, position) based on weather conditions. By varying the louver angle from fully open to fully closed, the system can control both airflow volume and rain entry prevention, effectively managing the trade-off between these two opposing requirements.
2Object-affected harmful factors
If a perforated sheet is used to prevent rain entry, then rain protection is improved, but fluid volume during extreme weather still causes damage
Solution Approach 1:
The drainage apparatus acts as an intermediary component between the perforated sheet and the building interior. It captures rainwater that penetrates through the perforated sheet during extreme weather and channels it away through dedicated drainage paths, preventing water accumulation and potential damage to the building structure.
Solution Approach 2:
The drainage system extracts and removes excess rainwater from the louver assembly during extreme weather events. By providing dedicated drainage channels and outlets, the system actively removes harmful fluid that penetrates through protective barriers, preventing water damage while maintaining the integrity of the protective components.
3Productivity
If conventional louver units are used, then airflow is maintained, but rainwater ingress causes damage
Solution Approach 1:
The louver system is segmented into multiple functional components: airflow control louvers, a perforated sheet barrier, and a drainage apparatus with separate channels. This segmentation allows each component to specialize in its function - louvers for airflow control, perforated sheet for rain blocking, and drainage apparatus for water removal - thereby maintaining airflow while preventing rainwater ingress damage.
Solution Approach 2:
The integrated louver system performs multiple functions simultaneously: it provides airflow control through adjustable louvers, rain protection through the perforated sheet, and water drainage through the dedicated drainage apparatus. This multi-functionality allows a single system to address both airflow requirements and rainwater protection needs without compromising either function.
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 system effectively manages airflow while preventing significant rainwater ingress, meeting the AMCA 550 standard by draining excess fluid and directing it away, thus protecting the louver unit from damage.
Implementation Method 1
a sloped sill member... disposed at an angle with respect to the base member of the sill pan
Implementation Method 2
configured to drain 8.8 inches of fluid per hour
Implementation Method 3
a baffle coupled to the sloped sill member and configured to provide a low-pressure region of the drainage apparatus
Data Source
AI summary
Drainage systems and louver units are disclosed comprising a drainage apparatus. The drainage apparatus has a sill having a front sill member, a sloped sill member, and a back sill member, wherein the front sill member is coupled to the sloped sill member and the sloped sill member is coupled to the back sill member. The drainage apparatus further has a baffle coupled to the sloped sill member and configured to provide a low-pressure region. The drainage apparatus further has a sill pan comprising a base member and a back pan member, wherein the sill pan houses the sill therein and a height of the back pan member is greater than a height of the back sill member, wherein the drainage apparatus is configured to drain 8.8 inches of fluid per hour and configured to permit up to 1% of a volume of the fluid application to pass through the louver unit.