Pivoting Window Sealing Assembly with Composite Profiles
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Solution Overview
Problem
Designing a swing/turn window with a tight rebate space between the frame and sash using simple construction means and achieving optimal thermal insulation remains a challenge in existing technologies.
Innovation Solution
The use of thermally insulating composite profiles with dynamic and static sealing sections, including center seals made of foam materials like EPDM, ensures effective sealing and insulation by creating multiple sealing areas around the axis of rotation, capable of handling both static and dynamic forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If simple construction methods are used for sealing the rebate space, then device complexity is reduced, but sealing effectiveness and thermal insulation deteriorate
Solution Approach 1:
The sealing profile is divided into multiple sealing sections (first sealing section and second sealing section) that can be differentially designed. Each section can be optimized for specific sealing requirements (static vs dynamic forces) while using a unified overall structure, reducing complexity while maintaining effectiveness
Solution Approach 2:
The sealing profile serves multiple functions simultaneously: it provides sealing against static forces, sealing against dynamic forces, thermal insulation, and structural support. By integrating these functions into a single component rather than multiple separate elements, the overall device complexity is reduced while maintaining comprehensive sealing performance
2Device complexity
If simple construction methods are used for sealing the rebate space, then device complexity is reduced, but thermal insulation deteriorates
Solution Approach 1:
The sealing profile is designed as a composite structure incorporating multiple materials with different properties (e.g., rigid sections for structural support, flexible sections for sealing, and insulating materials for thermal protection). This composite approach achieves superior thermal insulation without requiring complex multi-component assemblies, as the insulating properties are integrated into the profile itself
3Reliability
If sealing profiles are designed to handle dynamically varying forces, then sealing effectiveness is improved, but device complexity increases
Solution Approach 1:
Different sections of the sealing profile are designed with different properties: the first sealing section is optimized for static forces while the second sealing section is optimized for dynamic forces. This localized differentiation allows each section to perform its specific function effectively without requiring the entire profile to be over-engineered for dynamic conditions, thus reducing overall complexity
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 results in a window with enhanced tightness against driving rain, airtightness, and sound insulation, while maintaining a simple and clear structural assembly.
Implementation Method 1
The center sealing profiles overlap one another in a direction parallel to the plane of the window and consist of a foam material, in particular EPDM (sponge rubber), and can be compressed in the closed state of the sash in the rebate space between the frame and the sash
Implementation Method 2
The use of thermally insulating composite profiles with dynamic and static sealing sections
Data Source
Figure 1a
Figure 1b
Figure 1c
AI summary
A pivot/tilt window has the following features: - a preferably fully enclosed frame (1), - a sash (2) with a preferably fully enclosed sash frame (3) which accommodates a surface element, in particular an insulating glass pane (4), - wherein the sash (2) with the sash frame (3) is pivotably mounted on the frame (1) in the area of a pivot joint with an axis of rotation (X), such that the sash (2) can initially be moved partially inwards and partially outwards when opening, - wherein both the frame (1) and the sash frame (3) each have a base profile (15, 16) to which an interchangeable profile (25) is alternately attached towards both sides of the axis of rotation X, - and wherein at least one sealing arrangement or several sealing arrangements is/are provided.