Insulating Glass Spacer with Segmented Outer Wall
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Solution Overview
Problem
Existing spacers for insulating glass panes face challenges in maintaining mechanical stability and heat transmission resistance while being economically produced and deformable in cold bending methods, with limitations in preventing water vapor condensation and material cost efficiency.
Innovation Solution
The spacer design incorporates a primary reinforcing metal foil vapor diffusion barrier, porous plastics material structure, and secondary reinforcing elements to enhance cold bendability, heat resistance, and material efficiency, with articulation areas and reduced wall thicknesses to facilitate deformation and desiccant accommodation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the spacer uses a closed hollow profile structure with thick walls to ensure mechanical stability, then strength and stability are improved, but cold bendability deteriorates
Solution Approach 1:
The outer wall is segmented into different wall sections with different thicknesses. The first wall section has a greater thickness for strength, while the second and third wall sections have reduced thickness to facilitate bending. This segmentation allows the spacer to maintain mechanical stability in critical areas while enabling cold deformability in regions requiring shaping.
Solution Approach 2:
Different regions of the spacer profile have different wall thicknesses tailored to their specific functional requirements. The side walls and first wall section have greater thickness for structural integrity, while the second and third wall sections have reduced thickness specifically where bending is required. This local differentiation of properties resolves the contradiction between overall strength and localized deformability.
2Ease of manufacture
If the spacer wall thickness is reduced to improve cold bendability, then ease of manufacture is improved, but mechanical stability deteriorates
Solution Approach 1:
The profile body is divided into multiple wall sections with differentiated thicknesses. Critical load-bearing areas (side walls, first wall section) maintain greater thickness for stability, while non-critical areas (second and third wall sections) have reduced thickness for bendability. This segmentation allows each region to be optimized for its specific function.
Solution Approach 2:
The spacer employs non-uniform wall thickness distribution where each local region's thickness is optimized for its specific role. Thicker walls are positioned where mechanical strength is critical, while thinner walls are positioned where deformability is needed, achieving both requirements simultaneously in different locations.
3Reliability
If the spacer uses uniform thick walls to prevent water vapor penetration and maintain sealing, then reliability is improved, but material costs and weight increase
Solution Approach 1:
The outer wall is segmented into different thickness zones. The first wall section maintains greater thickness to ensure moisture-tight sealing and structural integrity, while the second and third wall sections have reduced thickness where sealing requirements are lower. This segmentation reduces overall material consumption while maintaining reliability in critical areas.
Solution Approach 2:
The spacer uses differentiated wall thicknesses where each local region's thickness is optimized for its specific sealing and structural requirements. Critical sealing areas have sufficient thickness for reliability, while non-critical areas use minimal thickness to reduce material consumption and cost.
4Loss of energy
If the spacer profile is designed with complex geometry to improve thermal insulation performance, then heat transmission resistance is improved, but manufacturing complexity increases
Solution Approach 1:
The complex profile geometry is segmented into standardized wall sections with defined thickness variations. This segmentation allows the complex shape to be produced using conventional extrusion and cold bending processes, maintaining manufacturing simplicity while achieving the thermal insulation benefits of the optimized geometry.
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 achieves improved heat transmission resistance, reduced material costs, and simplified handling in cold bending, while maintaining mechanical stability and preventing water vapor condensation, thereby optimizing the spacer's performance and economic production.
Implementation Method 1
an integral, primary reinforcing element, which is configured as a vapor diffusion barrier, extending from the first side wall over the outer wall to the second side wall
Implementation Method 2
The spacers are filled in their hollow profile with desiccant, for example, for which only a limited volume is available
Data Source
AI summary
A spacer for insulating glass panes has a profile body configured as a closed hollow profile substantially closed in cross section, the profile body having first and second side walls in parallel spaced apart from each other, an inner wall extending between the first and second side walls, and an outer wall extending from the first to the second side wall spaced apart from the inner wall. The outer wall comprises a first wall section aligned substantially parallel to the inner wall, second and third wall sections arranged on both sides of the first wall section, the latter, in cross section to the axial direction of the body, aligned at an obtuse angle to the first wall section and to the respective adjacent side wall, and connect thereon. The spacer includes an integral, reinforcing element, extending from the first side wall over the outer wall to the second side wall.