Window Ventilation Duct Layout That Preserves Frame Strength
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Solution Overview
Problem
Existing ventilation devices for windows and doors are cumbersome, require expensive materials, and cannot be easily installed in conventional frames, leading to structural impairment and increased risk of damage during handling and maintenance.
Innovation Solution
A ventilation device with a simple, inexpensive design featuring a transverse ventilation duct that can be easily integrated into various window and door frames without altering the existing profile, using telescopic ducts for precise fitting and an actuator with shut-off elements for efficient airflow regulation, along with a sealing strip and toothed profile for leak prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ventilation device covers the entire space of the window frame in cross section, then the ventilation function is improved, but the strength of the window or door is impaired
Solution Approach 1:
The ventilation device is divided into separate modular components: a ventilation duct component and a frame component. The ventilation duct is inserted into a recess in the frame rather than covering the entire frame cross-section, allowing the frame to maintain its structural integrity while providing ventilation functionality.
Solution Approach 2:
The ventilation duct is positioned in a recess within the frame structure, utilizing the depth dimension of the frame rather than expanding the cross-sectional area. This allows ventilation without compromising the external dimensions and structural strength of the window or door.
2Reliability
If the ventilation device is designed to cover the entire frame space, then the ventilation effectiveness is improved, but the device complexity and manufacturing cost increase
Solution Approach 1:
The ventilation device is segmented into a frame component with a recess and a separate ventilation duct component. This modular design simplifies manufacturing and assembly compared to a monolithic structure that would require complex processing of the entire frame.
Solution Approach 2:
The ventilation duct is extracted as a separate insertable component rather than being integrated into the frame structure itself. This allows conventional frames to be used without modification, and the ventilation function is added as a separate, simpler element.
3Reliability
If the ventilation device requires processing of frame parts for installation, then the ventilation function is achieved, but the ease of installation is reduced
Solution Approach 1:
A recess is pre-formed in the frame during frame manufacturing, and the ventilation duct is designed to be inserted into this recess. This preliminary preparation allows for easy installation of the ventilation device without requiring complex processing or modification of the frame at the installation site.
Solution Approach 2:
The recess in the frame acts as an intermediary structure that facilitates the installation of the ventilation duct. This intermediate feature allows the ventilation device to be installed in conventional frames without direct processing or modification of the frame's load-bearing structure.
4Reliability
If the ventilation device builds strongly inwards on the room-side end face, then the ventilation capacity is improved, but the risk of damage or injury during storage, transport or cleaning increases
Solution Approach 1:
The ventilation duct utilizes the depth dimension of the frame by being inserted into a recess, rather than building outwards from the room-side end face. This positioning provides protection for the ventilation structure while maintaining ventilation capacity, and reduces the risk of damage during handling and cleaning.
Data Source
Figure 1~3
Figure 4~6
AI summary
Ventilation device (1) for a window or a door having: a blind frame and casement frame (2, 3) or having a fixed frame with an air passage opening (6), arranged thereupon from the outside-facing surface (4) to the room-facing surface (5) of the window or door, for a ventilation duct (8) that routes the air flow (7); and a housing part (9), which runs in the longitudinal direction of the blind frame and casement frame (2, 3) or of the fixed frame over a partial length thereof. The ventilation device (1) has a control element (10) to regulate the air flow (7), and said control element (10) and the housing part (9) are arranged on the room-facing surface (5) of the casement, blind or fixed frame. The control element (10) has two blocking elements (11), which can be actuated by means of manual or automatic actuation in an opening or closing direction at the same time. The facing surface (5) of the housing part (9), which is visible on the room side, is formed by the one blocking element (11). Said blocking element (11) has, in cross-section, the shape of a circular ring segment, which is guided along the longitudinal edges and ends thereof in the housing part (9) and which has, along an inner contour of the circular ring segment shape, a tooth profile which meshes with a toothed pinion mounted on a pivot.