Window Ventilation Cartridge Structure for Low-Force Sealing
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Solution Overview
Problem
Existing windows with ventilation channels have complex structures that are difficult to clean and maintain, require high operating forces to close the sash, and have limited opening widths due to the insulating web acting as a sliding surface.
Innovation Solution
A window design featuring ventilation cassettes inserted into frame profiles, allowing for easy installation and maintenance, with a sliding guide rail to minimize operating forces and increase opening width, and a central seal to optimize sound insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the ventilation channel is formed directly in the frame profiles, then the ventilation function is integrated, but the structure becomes complex and difficult to clean and maintain
Solution Approach 1:
The ventilation system is segmented into separate modular components: ventilation cassettes that can be independently installed, removed, and cleaned from the frame profiles. This segmentation allows the ventilation function to be integrated while maintaining simple frame structures and enabling easy maintenance of the ventilation channels.
Solution Approach 2:
The ventilation channel functionality is extracted from the frame profiles and placed into separate ventilation cassettes. These cassettes can be inserted into recesses in the frame profiles, allowing the ventilation function to be integrated while keeping the frame structure simple and the ventilation components easily accessible for cleaning and maintenance.
2Device complexity
If the insulating web acts as a sliding surface, then the structure is simple, but the opening width is limited
Solution Approach 1:
The sliding surface for the sash is extended beyond the insulating web by introducing a sliding guide rail that projects into the frame rebate space. This dimensional extension allows the sash to slide along a longer path, increasing the opening width while maintaining structural simplicity through the use of a straightforward guide rail component.
3Device complexity
If the center seal slides on the insulating web, then the structure is simple, but the sealing performance is poor
Solution Approach 1:
A sliding guide rail acts as an intermediary between the center seal and the insulating web. The guide rail provides a dedicated sliding surface that improves sealing performance while maintaining structural simplicity. The insulating web remains in its original position for thermal insulation, while the guide rail enables better sealing contact.
4Reliability
If high operating forces are required to close the sash, then the sealing is effective, but the ease of operation deteriorates
Solution Approach 1:
The sliding guide rail modifies the friction characteristics between the sash and frame by providing an optimized sliding surface. This parameter change in the friction interface reduces the operating forces required to close the sash while maintaining effective sealing through the center seal's contact with the guide rail.
Data Source
Figure 1a
Figure 1b
Figure 2a~2b
AI summary
A window which comprises at least the following features: - a window frame (1) composed of a plurality of frame profiles (1'), - a sash frame (2) which is composed of a plurality of frame profiles (2'), preferably has at least one pane element (3) and is movable relative to the window frame (1) at least between a closed position and a ventilation position, - wherein a peripheral frame rebate space (F) is formed between the frame profiles (1') of the window frame (1) and the frame profiles (2') of the sash frame (2), - at least one ventilation duct (8) which is formed in at least one of the frame profiles (1') of the window frame (1) or in at least one of the frame profiles (2') of the sash frame (2) and which has a first ventilation duct opening (9) and a second ventilation duct opening (10), - wherein the sash frame (2) and the window frame (1) are designed to close at least one of the ventilation duct openings (9, 10) in the first closed position and to open both ventilation duct openings (9, 10) of the at least one ventilation duct (8) in the second position - the ventilation position, wherein the one or more ventilation ducts (8) is/are respectively formed in at least one ventilation cartridge (14) or a plurality of ventilation cartridges which is/are inserted into the window frame or the sash frame or into the respective window frame profile (1') or the respective sash frame profile (2').