L-Shaped Window Frame with Insulation Nesting
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Solution Overview
Problem
Existing window and door systems face challenges in achieving significant thermal insulation, protecting against weather effects, and maintaining an aesthetic appearance while minimizing material usage and visibility of frames, as they often rely on large cross-section frames and neglect issues like condensation and rainwater ingress.
Innovation Solution
The use of frames with an L-shaped cross-section, filled with insulating material, which allows for precise installation and plastering, reduces profile thickness, and features a design where the sash frame is completely covered, ensuring thermal insulation and aesthetic appeal by using the frame's edges as reference points and integrating a seal for water drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If large cross-section frames are used to achieve thermal insulation, then thermal insulation is improved, but material usage and aesthetic appearance deteriorate
Solution Approach 1:
The window frame is nested within the wall opening, with the frame's outer surface aligned with the wall's inner surface. This nesting arrangement allows the frame to be concealed within the wall structure, reducing its visible cross-section while maintaining thermal insulation through the integrated insulation layers between the frame and wall.
Solution Approach 2:
The frame system incorporates composite construction combining the frame material with thermal insulation materials (such as foam or mineral wool) in the space between the frame and the wall. This composite approach provides thermal insulation without requiring large cross-section frames, as the insulation is integrated into the wall-frame assembly rather than relying solely on frame thickness.
2Loss of energy
If large cross-section frames are used to achieve thermal insulation, then thermal insulation is improved, but aesthetic appearance deteriorates due to visible frames
Solution Approach 1:
The frame is nested within the wall opening such that the outer surface of the frame aligns with the inner surface of the wall. This nesting conceals the frame within the wall structure, making it invisible from the exterior while preserving thermal insulation performance through the integrated insulation layers.
Solution Approach 2:
The visible portion of the frame is extracted or removed from the exterior view by aligning the frame's outer surface with the wall's inner surface. The frame is effectively 'taken out' from the visible exterior appearance, leaving only the functional elements visible from the interior while maintaining insulation performance.
3Quantity of substance
If frame profiles are reduced to save material, then material usage is reduced, but thermal insulation and protection against weather deteriorate
Solution Approach 1:
The frame system uses composite construction where the frame is combined with thermal insulation materials (foam, mineral wool) in the space between the frame and the wall. This allows reduced frame cross-section while maintaining thermal insulation through the integrated insulation layers that compensate for the smaller frame size.
Solution Approach 2:
Thermal insulation material acts as an intermediary between the frame and the wall, providing the thermal insulation function that would otherwise require large frame cross-sections. This intermediary insulation layer compensates for the reduced frame size, maintaining thermal performance without requiring thick frames.
4Quantity of substance
If frame profiles are reduced to save material, then material usage is reduced, but protection against weather effects deteriorates
Solution Approach 1:
The frame system incorporates weather-resistant composite construction where the frame is combined with protective sealing elements and insulation materials. This composite approach provides protection against weather effects without requiring large frame cross-sections, as the protective functions are integrated into the wall-frame assembly rather than relying solely on frame thickness.
Solution Approach 2:
Sealing elements and insulation materials act as intermediaries between the frame and the external environment, providing protection against weather effects. These intermediary elements compensate for the reduced frame size by creating effective barriers against water, air, and thermal transfer at the interface between the frame and the wall.
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 achieves improved thermal insulation, reduced material usage, and enhanced aesthetic appeal by minimizing frame visibility, while also reducing stress on hinge fittings and ensuring effective water management, thus addressing the limitations of previous systems.
Implementation Method 1
a heat-insulating material, e.g. of the foaming type, is provided between the frame and the material of the wall, in order to interrupt the thermal bridges to the wall in the peripheral area and at the front
Data Source
Figure 1
Figure 2~3
AI summary
The window has high thermal insulation coefficient which is inserted under intermediate layer of a door frame (4). One or multiple impellers are provided with insulating disks that are glued on a window sash. The disks are fitted at the outer side of a body stop with a closed impeller. The door frame has L-shaped cross-section and forms the front-sided body stop for an inserted block frame (6) with an axle stub that lies in a vertical plane.