Door Jamb Corner Seal Preventing Water Infiltration
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Solution Overview
Problem
Existing entry systems, particularly doorways, face challenges in sealing the corners where the sill and door jamb meet, leading to water infiltration due to wind-driven rain, as conventional seals are ineffective in preventing leakage at these junctions.
Innovation Solution
The implementation of a corner seal with an upper portion that seals against the weather strip and a lower portion spaced apart to form a gap, which prevents water from entering the channel and reduces air velocity, using a design that includes a projection to eliminate gaps and inhibit water and air flow, made from materials like soft polymeric foam with a wear-resistant outer surface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rectangular corner pad is placed on the bottom of the jamb to seal the corner, then water infiltration is reduced, but air velocity increases and capillary action occurs through the gap between the pad and weather strip
Solution Approach 1:
The corner seal is divided into multiple functional segments: an upper portion that contacts the weather strip and a lower portion spaced apart to form a gap. This segmentation allows the seal to simultaneously block water infiltration paths while managing air flow and preventing capillary action through strategic gap placement.
Solution Approach 2:
The invention transitions from a traditional single-plane seal to a three-dimensional corner seal structure with vertical spacing between the lower portion and weather strip. This dimensional change creates a controlled gap space that disrupts capillary action and manages air flow patterns to prevent water infiltration.
2Object-affected harmful factors
If the lower portion of the corner seal is spaced apart from the weather strip to form a gap, then capillary action is prevented, but sealing completeness may be compromised
Solution Approach 1:
Different portions of the corner seal have different spatial relationships with the weather strip: the upper portion makes direct contact for sealing, while the lower portion is spaced apart to prevent capillary action. This local differentiation of sealing strategy optimizes performance for different infiltration mechanisms.
3Ease of operation
If conventional weather strips are used to seal the door jamb, then general weather sealing is achieved, but corner junctions remain vulnerable to water leakage
Solution Approach 1:
The corner seal integrates multiple sealing functions into a single component: it combines the roles of corner filling, weather stripping, and capillary action prevention. This merging of functions addresses the vulnerability of corner junctions while maintaining ease of operation through a unified seal design.
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
This design effectively minimizes water infiltration by preventing capillary action and air-driven water movement, ensuring a leak-tight seal and reducing the velocity of air flow, thereby enhancing the sealing efficiency at the door jamb corners.
Implementation Method 1
This design effectively minimizes water infiltration by preventing capillary action and air-driven water movement
Implementation Method 2
reducing the velocity of air flow, thereby enhancing the sealing efficiency at the door jamb corners
Data Source
AI summary
Entry systems that minimize water infiltration due to a wind driven rain. In one embodiment, the entry system includes a corner pad that includes an upper portion that seals against the weather strip when the door is closed and a lower portion that is spaced apart from the weather strip to form a gap between the lower portion and the weather strip. The lower portion seals against the door when the door is closed.