Movable Cover Profile for Window Frame Thermal Stress
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Solution Overview
Problem
Existing frame and cover profiles for windows and doors suffer from thermal stress and deformation due to temperature differences between the inside and outside, leading to reduced mechanical stability and tightness, as conventional thermal insulation materials exacerbate these issues.
Innovation Solution
A frame profile design featuring a base profile with thermal insulation and a movable cover profile that can expand independently, reducing heat transfer and mechanical stress by allowing the cover profile to heat up and expand without transferring these stresses to the base profile, while also providing shading and additional insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If thermal insulation materials are used between the inside and outside of the base profile, then thermal insulation performance is improved, but thermal stress and distortion increase due to temperature differences
Solution Approach 1:
The frame profile is divided into multiple base profiles (first base profile and second base profile) separated by a thermal insulation layer. This segmentation allows each base profile to independently accommodate thermal expansion and contraction, preventing stress accumulation and distortion while maintaining effective thermal insulation between the interior and exterior portions.
2Strength
If a cover profile is fixedly connected to the base profile, then structural stability is improved, but thermal stress causes distortion and reduces tightness
Solution Approach 1:
The cover profile is detachably connected to the base profiles rather than being fixedly attached. This dynamic connection allows the cover profile to be removed or adjusted when thermal expansion occurs, preventing stress buildup and distortion while maintaining structural stability during normal operation. The detachable nature enables the system to adapt to thermal variations without compromising tightness.
3Shape
If the cover profile is made thin for aesthetic purposes, then appearance is improved, but thermal protection capability is reduced
Solution Approach 1:
The cover profile's aesthetic function and the thermal insulation function are merged into separate but coordinated components. The thin cover profile provides the desired aesthetic appearance, while the dedicated thermal insulation layer between the base profiles provides effective thermal protection. This separation allows each component to optimize its primary function without compromise.
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 mitigates thermal deformation of the frame profile, maintaining mechanical stability and tightness by allowing the cover profile to absorb and manage thermal expansion, thereby protecting the base profile from warping and ensuring effective insulation.
Implementation Method 1
the flexible fastening of the cover profile creates a compensation option here. In strong sunlight, the glare profile heats up due to the shading and the fact that the basic profile is kept cool. When the cover profile heats up, it will expand based on its material and depending on the coefficient of thermal expansion.
Data Source
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AI summary
The invention relates to a frame profile (10) for a window or door, comprising a base profile (20) with an inner side (22) and an outer side (24), wherein thermal insulation (26) is arranged at least partially between the inner side (22) and the outer side (24). According to the invention, a cover profile (30) is movably attached to at least one of the two sides (22, 24) in its main extension direction (32) and covers the base profile (20) at least partially on the corresponding side (22, 24).