Multi-Chamber Fenestration Sill With Corner-Key Drainage
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Solution Overview
Problem
Fenestration units with moveable panels face challenges in managing water intrusion due to manufacturing inefficiencies, increased assembly time, and complexity, particularly in sliding door or window units, which require a robust and efficient water management system that simplifies design and reduces costs.
Innovation Solution
A sill arrangement with an elongate sill featuring chambers and ports, coupled with corner keys, that includes a drain and fluid passages to direct water and air away from the interior, utilizing static head pressure to manage water intrusion and equalize pressure differentials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional water management features are added to fenestration units, then water protection capability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple water management functions (drainage, weather-proofing, structural support) into a single integrated sill arrangement. The sill includes internal chambers and ports that work together as a unified system to manage water while supporting the panel, eliminating the need for separate complex water management components.
Solution Approach 2:
The sill arrangement serves multiple functions simultaneously: it provides structural support for the panel, manages water drainage through internal chambers and ports, and acts as a weather-proofing barrier. This multi-functionality reduces the need for additional specialized components, simplifying the overall system.
2Reliability
If traditional water management features are added to fenestration units, then water protection capability is improved, but manufacturing efficiency decreases
Solution Approach 1:
By integrating water management features directly into the sill structure, the patent reduces the number of separate parts that need to be manufactured and assembled. The sill is designed as a unified component with built-in chambers and ports, streamlining the manufacturing process.
Solution Approach 2:
The sill is divided into functional chambers (first chamber for water collection, second chamber for drainage) that can be manufactured using standardized molding techniques, improving manufacturing efficiency while maintaining water management functionality.
3Reliability
If traditional water management features are added to fenestration units, then water protection capability is improved, but assembly time increases
Solution Approach 1:
The integration of water management features into the sill arrangement reduces the number of assembly steps. The sill with built-in chambers and ports is installed as a single unit, eliminating the need to separately install drainage systems and weather-proofing components.
Solution Approach 2:
The water management features are pre-integrated into the sill structure during manufacturing, so that during installation, the entire water management system is installed simultaneously with the sill, rather than being added as separate post-installation components.
4Reliability
If a robust water management system is implemented, then water intrusion protection is improved, but cost increases
Solution Approach 1:
The patent integrates water management functionality into the existing sill structure rather than adding separate complex systems. The internal chambers and ports are incorporated into the sill's design, providing robust water protection without requiring additional specialized components.
Solution Approach 2:
The sill arrangement performs multiple functions including water drainage, weather-proofing, and structural support through a single integrated design, reducing the need for multiple specialized components and lowering overall system complexity and cost.
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 sill arrangement effectively diverts water and air, minimizing intrusion into the building while providing robust support for sliding panels, reducing manufacturing complexity and assembly time, and maintaining structural integrity.
Implementation Method 1
a drain in fluid communication with the fourth chamber and configured to direct fluid from the fourth chamber and out of the corner key
Implementation Method 2
utilizing static head pressure to manage water intrusion and equalize pressure differentials
Implementation Method 3
The first port defines a first fluid passage between the first and second chambers of the sill. The first port defines a second fluid passage between the second and third chambers of the sill. Moreover, a second port is included on the sill-facing surface and offset from the first port. The second port defines a third fluid passage between the third and fourth chambers.
Data Source
AI summary
A sill arrangement for a fenestration frame includes a sill with a first chamber, a second chamber, a third chamber, and a fourth chamber. The sill includes a first internal wall that separates the first chamber from the second chamber. The sill arrangement also includes a corner key with a first port defining a first passage between the first and second chambers and a second passage between the second and third chambers of the sill. Moreover, a second port is included on the sill-facing surface that defines a third passage between the third and fourth chambers for allowing fluid to flow from the third chamber to the fourth chamber. The corner key further includes a drain in communication with the fourth chamber.