Thermally Insulated Composite Profile with Structured Dam Bar
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Solution Overview
Problem
Existing thermally insulated composite profiles for windows and doors face a trade-off between thermal insulation and static strength, as reducing heat transfer via the insulating web typically compromises structural integrity.
Innovation Solution
The introduction of shell-shaped elevations and depressions in the insulating web between connecting strips increases the path for heat conduction without altering the web's width, enhancing structural stiffness and reducing thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the wall thickness of the insulating web is reduced to improve thermal insulation, then heat transfer is reduced, but static strength decreases
Solution Approach 1:
The patent introduces elevations and depressions that extend in the longitudinal direction (third dimension relative to the web thickness), transforming a two-dimensional thickness problem into a three-dimensional structural solution. The contact flanks create additional thermal path length without increasing web width, while the longitudinal extensions provide structural reinforcement.
Solution Approach 2:
The insulating web is segmented into multiple functional zones: elevations, depressions, and contact flanks. This segmentation allows different regions to serve different purposes - elevations and depressions extend thermal resistance paths while contact flanks provide structural connection and stiffness.
2Strength
If thicker-walled sections are provided in connecting strips to improve buckling resistance, then static strength is improved, but heat conduction increases
Solution Approach 1:
The patent applies local quality by providing thick-walled sections only at specific locations (contact flanks) where structural strength is needed, while keeping other areas thin-walled to minimize heat conduction. The elevations and depressions are strategically positioned to provide thermal resistance where structural reinforcement is not required.
3Quantity of substance
If a lattice structure is used in the insulating web to reduce material usage, then manufacturing cost is reduced, but heat flow increases
Solution Approach 1:
The patent creates a composite structure combining the insulating web with elevations and depressions that form a hybrid system. The contact flanks and structured surfaces work together to provide both structural support and thermal insulation, achieving better performance than either element alone.
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 reduces heat conduction and thermal radiation losses while maintaining or improving static strength, without changing the composite profile's dimensions.
Implementation Method 1
the run-up flanks surrounding the elevations or depressions increase the path for heat conduction
Implementation Method 2
the solution according to the invention helps somewhat to reduce both the thermal radiation losses due to the larger shading areas and the thermal convection losses due to the structured surfaces of the chamber walls
Implementation Method 3
the solution according to the invention helps somewhat to reduce both the thermal radiation losses due to the larger shading areas
Data Source
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AI summary
The thermally insulated composite profile has inner and outer side frame sections that are made up of metal and a dam bar (3) is interconnected to frame profiles. The edge side is provided with connecting bars (4) for connecting with the frame profiles. The dam bar is provided with elevations (5) or depressions (6) in the area between the connecting bars.