Weather Seal Transition Zone for Moisture Ingress Prevention
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Solution Overview
Problem
Existing door sealing systems fail to effectively prevent moisture ingress, especially in high moisture and high pressure conditions near oceans or during storms, due to limitations in air and water barrier performance.
Innovation Solution
A weather seal system comprising a sill portion, frame portion, and transition portion that extends inwardly and downwardly to create a buffer zone, providing dry air to leaks and reducing moisture ingress by equilibrating pressure and directing water away from the air barrier.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional sealing systems with raised and moisture-wicking sills are used, then moisture ingress is reduced to some extent, but the system fails to effectively prevent moisture ingress in high moisture and high pressure conditions
Solution Approach 1:
The sealing system is divided into distinct functional segments: a water barrier (vertical seal), an air barrier (horizontal seal), and a transition portion connecting them. This segmentation allows each component to address specific moisture ingress pathways independently, with the water barrier handling vertical water penetration and the air barrier preventing horizontal air-driven moisture intrusion, thereby achieving reliable moisture prevention under high pressure conditions.
Solution Approach 2:
The transition portion acts as an intermediary element between the water barrier and air barrier, creating a buffer zone that mediates the interaction between water and air pressures. This intermediary structure allows the system to handle the complex interaction of water and air pressures simultaneously, preventing moisture ingress that would occur with traditional single-barrier systems.
2Reliability
If the transition portion creates a buffer zone with greater spacing from the water barrier, then dry air is supplied to air leaks, but the overall sealing complexity increases
Solution Approach 1:
The transition portion merges the water barrier and air barrier into a single integrated sealing system rather than separate independent barriers. This combined structure creates a coordinated defense where the water barrier handles vertical water penetration and the air barrier handles horizontal air-driven moisture, with the transition portion providing structural continuity and functional integration, thereby achieving reliable air barrier performance without excessive complexity.
Solution Approach 2:
The transition portion extends in a third dimension (diagonally inward and downward) to create the buffer zone, rather than simply extending horizontally or vertically. This dimensional approach allows the system to provide dry air to leaks while maintaining a compact overall structure, as the buffer zone is created through spatial arrangement rather than increased material usage.
3Reliability
If multiple seal components are used to form water and air barriers, then moisture ingress is reduced, but the device complexity increases
Solution Approach 1:
The sealing system employs multi-functional components where the water barrier, air barrier, and transition portion each serve multiple purposes. The water barrier not only prevents vertical water penetration but also works in conjunction with the air barrier to prevent horizontal moisture intrusion. The transition portion provides both structural connection and functional integration. This multi-functionality allows the system to achieve reliable water barrier performance without requiring separate dedicated components for each function, thereby reducing overall device complexity.
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 significantly reduces moisture ingress by creating a dry air buffer and directing water away from the air barrier, effectively managing pressure differentials and preventing water intrusion into structures.
Implementation Method 1
The transition portion extends inwardly and downwardly from the frame portion of the air barrier, toward an interior side of an associated door assembly, to the sill portion of the air barrier... the transition zone supplies substantially dry air to any air leaks in air barrier at the lower corner(s) of the door assembly
Implementation Method 2
The transition portion extends inwardly and downwardly from the frame portion of the air barrier... directing water away from the air barrier
Data Source
AI summary
Some aspects relate to weather seal systems for forming water barriers and air barriers. Some air barriers include a sill portion, a frame portion, and a transition portion extending between the sill and frame portions, where the transition portion extends inwardly and downwardly from the frame portion of the air barrier, toward an interior side of an associated door assembly, to the sill portion of the air barrier. The transition portion optionally provides a buffer zone, or transition zone of air at a greater spacing from the water barrier. In some embodiments, the transition zone is equilibrated to external pressures and supplies substantially dry air to air leaks in the air barrier.