Facade Retaining Profile Recesses Break Thermal Bridges
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Solution Overview
Problem
Existing fastening devices for facade systems, particularly those with metal profiles, create thermal bridges that lead to undesirable heat loss and moisture penetration issues, compromising the insulation and integrity of building facades.
Innovation Solution
A retaining profile with a second contact surface featuring step-like recesses and webs, reducing the contact area by at least 30% and incorporating notches to guide fasteners, which minimizes heat transfer and supports panel-shaped cladding elements while preventing moisture penetration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal retaining profile is used for fastening facade elements, then the structural strength and fastening capability are improved, but thermal bridges are formed causing heat loss
Solution Approach 1:
An intermediary layer (air gap created by recesses) is introduced between the metal retaining profile and the facade panel to break the direct thermal contact path. The recesses create discontinuities in the thermal bridge, allowing the metal profile to maintain its fastening function while reducing heat transfer to acceptable levels.
Solution Approach 2:
The retaining profile incorporates a porous or discontinuous contact surface through recesses, transforming the solid continuous contact into a fragmented contact pattern. This porous contact surface reduces thermal conductivity while maintaining mechanical support capability.
2Stability of the object's composition
If the contact surface area between retaining profile and cladding element is increased, then the support and stability are improved, but heat transfer and moisture penetration increase
Solution Approach 1:
The continuous contact surface is segmented into multiple discrete contact points through recesses. This segmentation maintains adequate support stability through distributed contact points while creating air gaps that prevent continuous moisture pathways and reduce overall heat transfer area.
3Loss of energy
If recesses are added to reduce contact surface area, then heat loss is reduced, but the complexity of the profile increases
Solution Approach 1:
The recesses are integrated into the extrusion process of the retaining profile, merging the thermal break feature with the profile manufacturing. This combining approach adds minimal complexity to the overall system while achieving the thermal reduction goal, as the recesses are formed during the base profile production rather than requiring separate components.
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
Significantly reduces heat loss and moisture penetration, ensuring effective insulation and preventing material damage, while facilitating easy assembly and maintaining a visually appealing facade.
Implementation Method 1
the recesses reducing the total area of the second contact surface by at least 30%, preferably by at least 50%, more preferably by at least 60%... the contact surface lying against the panel-shaped wall or ceiling cladding element... heat transfer in this area is prevented or at least significantly reduced
Implementation Method 2
Such a recess causes an air-filled space between the retaining profile and the panel-shaped wall or ceiling cladding element, so that heat transfer in this area is prevented or at least significantly reduced
Data Source
Figure 1
AI summary
The invention relates to a support section for a facade system, for directly or indirectly fixing at least one essentially panel-type wall-covering or ceiling-covering element to a support structure of a building, comprising a first contact surface (1) for attaching the support section to a support element which is directly or indirectly fixed to the support structure, and a second contact surface (2), for attaching an essentially panel-type wall-covering or ceiling-covering element or a further support element to the support section, lying essentially perpendicularly to the first contact surface. According to the invention the second contact surface (2) has several recesses (3) which are designed in a step-like manner and which run in the longitudinal direction of the support profile. The recesses (3) are separated by ridges (4) which form at least a part of the second contact surface (2), and the recesses (3) reduce the total surface of the contact surface by at least 30%, preferably by at least 50% or 60%. Furthermore, the invention relates to a fixing device for a facade system comprising such a support section and a facade system comprising such a fixing device.