Composite Aluminum Profile With Thermal Breaks for Fire Stability
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Solution Overview
Problem
Existing composite profiles for windows and doors are complex and expensive to manufacture, with components requiring precise fitting and adhesive bonding, leading to potential warping and instability during fires due to temperature differences.
Innovation Solution
A composite profile design featuring a one-piece aluminum profile with parallel insulating profiles fixed in grooves, utilizing undercut tongue-and-groove joints and shear-resistant connections, enhancing structural integrity and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional composite profiles use multiple aluminum profiles with insulating profile zones connected by bridge webs requiring adhesive bonding and precise fitting, then fire resistance can be achieved, but manufacturing complexity and cost increase significantly
Solution Approach 1:
The patent merges multiple separate components (aluminum profiles, insulating profiles, bridge webs) into a single integrated extruded profile. The composite profile is produced as one piece with internal cavities and wall sections that provide both structural support and thermal insulation, eliminating the need for assembly of multiple parts and adhesive bonding.
Solution Approach 2:
The single extruded profile performs multiple functions simultaneously: it provides structural strength through aluminum zones, thermal insulation through insulating profile zones, and fire resistance through the integrated design. The profile serves as both the structural frame and the insulation barrier, eliminating the need for separate bridge webs and adhesive bonds.
2Reliability
If traditional composite profiles use multiple components requiring precise fitting and adhesive bonding, then fire resistance class can be achieved, but manufacturing cost increases
Solution Approach 1:
The patent combines multiple manufacturing steps and components into a single extrusion process. The composite profile is produced in one continuous operation without requiring separate fabrication of bridge webs, milling of recesses, application of adhesives, or precision assembly, significantly reducing manufacturing cost.
Solution Approach 2:
The integrated profile design is self-sufficient and does not require external assembly operations. The profile self-assembles through its inherent geometry with interlocking features that provide both structural connection and thermal break functionality without additional fasteners or adhesives.
3Reliability
If fire-resistant constructions use cutouts in aluminum profiles to reduce heat flow, then fire resistance is improved, but warping occurs due to temperature differences (bimetallic effect)
Solution Approach 1:
The patent uses a composite structure with alternating aluminum zones and insulating profile zones within a single extruded profile. The insulating zones act as thermal breaks that reduce heat flow during fire conditions, while the aluminum zones provide structural stability. This composite design reduces thermal stress and prevents warping by distributing temperature gradients across different material zones.
Solution Approach 2:
The profile has different material properties at different locations: aluminum zones provide structural strength and fire resistance where needed, while insulating profile zones provide thermal break functionality in specific areas. This localized differentiation of material properties allows the profile to resist warping while maintaining fire resistance.
4Reliability
If traditional composite profiles use temperature-resistant bridge elements made of steel with adhesive bonding, then fire resistance is achieved, but the number of components and work steps increase
Solution Approach 1:
The patent eliminates separate bridge elements by integrating the connecting function into the single extruded profile. The wall sections between cavities serve as both structural connectors and thermal breaks, merging the functions of bridge webs, adhesives, and insulation into one monolithic component.
Solution Approach 2:
The patent extracts and eliminates the unnecessary bridge webs and adhesive bonding steps from the traditional composite profile design. The single extruded profile achieves the same structural and insulation functions without these intermediate components, simplifying the overall construction.
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 design achieves high structural stability and thermal insulation, simplifying manufacturing and reducing complexity while maintaining fire resistance and stability under extreme temperatures.
Implementation Method 1
an insulating profile running parallel to the aluminum profile... which may be made of a less conductive material like plastic
Data Source
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AI summary
A composite profile (2) for a window, door, or facade element comprises the following: a one-piece aluminum profile (1) extending in a principal direction, to which an insulating profile (2) running parallel to the aluminum profile (1) is attached in two fastening areas, wherein the one-piece aluminum profile has one or more recesses (111) where it runs alongside the insulating profile (2), between which aluminum webs (113) are formed. A method for manufacturing such composite profiles is also described.