Double Door Astragal Sealing for Reduced Air Leakage
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Solution Overview
Problem
Decorative and majestic double door systems are often not energy efficient, leading to high energy costs.
Innovation Solution
The implementation of improved weather seals, such as flexible weather strips with magnets, and double astragals, along with removable screens and decorative panels, enhances energy efficiency by minimizing air leakage and providing better insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional double door systems are used, then aesthetic appearance is achieved, but energy efficiency deteriorates due to air leakage
Solution Approach 1:
The door system is divided into multiple components including first and second doors with separate astragals, weatherstripping elements, and interchangeable panels. This segmentation allows each component to be optimized independently for energy efficiency while maintaining overall system functionality and aesthetic appearance.
Solution Approach 2:
Weatherstripping is pre-installed on the astragals and door edges before final assembly, creating sealed barriers against air leakage in advance. This preliminary sealing action ensures energy efficiency is built into the system structure rather than added as an afterthought.
2Loss of energy
If weather seals and insulation components are added, then energy efficiency improves, but manufacturing complexity increases
Solution Approach 1:
Flexible weatherstripping material is used to create seals between door components. This thin film approach provides effective air leakage prevention without requiring bulky insulation layers or complex structural modifications, maintaining manufacturing simplicity while improving energy efficiency.
Solution Approach 2:
The door system combines different materials including wood or composite door panels, metal or plastic astragals, and elastomeric weatherstripping. This composite material approach allows each component to be manufactured using its optimal material properties, then assembled together to achieve superior overall energy efficiency.
3Adaptability or versatility
If decorative panels are made interchangeable, then versatility improves, but structural complexity increases
Solution Approach 1:
The attachment system is designed with universal mounting features that can accommodate different panel types and configurations. Standardized attachment points and mechanisms allow various decorative panels to be interchanged without requiring custom installation procedures, enhancing versatility while controlling complexity through standardization.
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 solution results in improved energy efficiency by reducing air leakage and enhancing insulation, thereby lowering energy costs.
Implementation Method 1
magnetic weather stripping
Data Source
AI summary
There is disclosed certain embodiments of a double door system comprising a first door having a first interior mullion with a first astragal formed on an interior face of the first interior mullion; and a second door having a second interior mullion with a second astragal formed on an exterior face of the second interior mullion. Other improvements may include the use of magnetic weather stripping which can be formed to fit curve doors and the use of removable decorative panels.