Profile Assembly Thermal Barrier Insert
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Solution Overview
Problem
Conventional profile arrangements for windows and doors suffer from undesirable heat transfer between the outer and inner profiles due to the cavity formed when the profiles are in a closed position, leading to inefficient thermal properties.
Innovation Solution
The introduction of a partially protruding insert with a thin wall area made from a poorly conductive material, such as PVC or polyamide, which extends into the cavity and is designed to minimize heat transfer while allowing for displacement and pivoting of the profiles without obstruction, and optionally features a heat-reflecting layer and fastening web for enhanced performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional U-shaped profiles are used with a cavity between outer and inner profiles, then the structure allows for displacement and pivoting of profiles, but heat transfer between outside and inside is favored
Solution Approach 1:
An insert is introduced as an intermediary element between the outer and inner profiles. This insert protrudes into the cavity and acts as a thermal barrier, reducing heat transfer while being designed to not interfere with the displacement and pivoting movement of the profiles.
Solution Approach 2:
The insert is positioned locally within the cavity at specific locations where heat transfer is most problematic. By placing thermal barriers only where needed rather than throughout the entire profile structure, the solution reduces heat transfer effectively while maintaining operational flexibility.
2Loss of energy
If an insert protrudes into the cavity to reduce heat transfer, then thermal properties are improved, but the insert may obstruct displacement or pivoting of profiles
Solution Approach 1:
The insert protrudes only partially into the cavity rather than fully blocking it. This partial intrusion is sufficient to reduce heat transfer at critical locations while leaving enough space for the profiles to displace and pivot without obstruction.
3Loss of energy
If a central middle seal is used to reduce heat transfer, then thermal properties are improved, but the weight increases significantly
Solution Approach 1:
Instead of using a single heavy central middle seal, the solution segments the thermal barrier function into multiple smaller inserts distributed within the cavity. Each insert is lightweight, and collectively they provide effective heat transfer reduction without the weight penalty of a large central seal.
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 solution significantly reduces unwanted heat transfer between the outer and inner profiles, achieving thermal conductivity reductions of up to 1.83 W/m²K with PVC and 1.60 W/m²K with a heat-reflecting layer, while maintaining operational flexibility and aesthetics.
Implementation Method 1
the at least one insert is formed from a material that conducts heat poorly, preferably from polyvinyl chloride (PVC) or polyamide (PA). As a result, the undesired transfer of heat can be further reduced.
Implementation Method 2
the wall area of the at least one insert is provided with a heat-reflecting layer at least in areas. Such a heat-reflecting layer in the form of a heat-reflecting film is preferably applied at least in regions to the wall region of the at least one insert.
Data Source
Figure 1
AI summary
The arrangement (100) has two profiles comprising outer profiles (11, 13) and inner profiles (10, 12) connected with the outer profiles using insulation rods (50-53). The profiles are brought in a closed position, in which the profiles define a hollow space (70). An insertion unit (40) partially protrudes into the hollow space. The profiles are swiveled opposite to each other. The insertion unit comprises a wall area (41), which partially extends into the hollow space. The insertion unit is made of polyamide or PVC.