Reveal-Integrated Ventilation Device for Window and Door Frames
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Solution Overview
Problem
Existing ventilation devices for windows and doors suffer from installation complexities, reduced window or door size, insufficient sound insulation, and inherent noise due to their design, which affects heat recovery and appearance.
Innovation Solution
A ventilation device with an inner and outer duct section featuring a radius-rounded transition from a flat duct to an angled section, minimizing air resistance and noise, and a concealed design that maintains the original window or door size and appearance, with a fastening section for secure anchoring and adjustable components for varying thicknesses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional ventilation device is installed in a window or door frame, then ventilation function is achieved, but the window or door size is reduced and appearance is impaired
Solution Approach 1:
The ventilation device is repositioned from the traditional frame-integrated location to the wall connection joint (reveal) between the fixed frame and the wall. This spatial relocation allows the ventilation housing to be concealed within the wall thickness rather than protruding into the window opening, thereby maintaining the full light opening area while preserving ventilation functionality.
2Reliability
If a rectangular box duct design is used, then ventilation ducting is achieved, but the device size becomes large and installation space is excessive
Solution Approach 1:
The traditional rectangular box duct design is replaced with an L-shaped duct configuration featuring rounded transitions with radius R1 and R2. This curved design reduces the overall volume required for the ductwork while maintaining effective airflow pathways, allowing the ventilation housing to fit within the limited wall connection joint space.
3Productivity
If conventional ductwork is used, then air flow is achieved, but inherent noise increases and heat recovery efficiency decreases
Solution Approach 1:
The L-shaped duct design incorporates rounded transitions with radii R1 and R2 at all angular joints instead of sharp 90-degree bends. This curvature eliminates turbulent airflow and eddy currents that generate noise, while also reducing flow resistance to maintain high airflow rates. The smooth transitions preserve heat recovery efficiency by preventing flow separation and pressure losses.
4Reliability
If a frame-integrated ventilation unit is positioned perpendicular to the window plane, then ventilation is achieved, but the device protrudes and requires labor-intensive masonry openings
Solution Approach 1:
The ventilation device is reoriented from a perpendicular projection to the window plane to a configuration that lies within the wall connection joint plane. The housing is positioned between the fixed frame and the wall, utilizing the reveal space. This eliminates the need for labor-intensive masonry openings and allows for simpler installation while maintaining ventilation functionality.
5Object-affected harmful factors
If sound insulation material is visibly applied around the window or door, then sound insulation is improved, but the appearance is impaired
Solution Approach 1:
The sound insulation housing is relocated from the visible window or door frame area to the concealed wall connection joint (reveal). This positioning places the sound insulation material behind the fixed frame, where it is not visible from the interior or exterior. The ventilation device thus provides effective sound insulation while maintaining the aesthetic appearance of the window or door.
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
The solution achieves high air output with good sound insulation, low inherent noise, and efficient heat recovery while maintaining the window or door's original size and appearance, requiring minimal installation space and no additional processing.
Implementation Method 1
A radius-rounded transition of the duct from the flat duct to the inner and outer duct sections is created, so that the air can pass through the angled path with minimal resistance
Data Source
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AI summary
The invention relates to a ventilation device (1) for supplying and/or extracting a volume flow, which device, for integration between a wall (4) and a fixed frame (5) of a window or of a wall connection joint (6) comprising a door (2), docks on the fixed frame (5) and extends from an outside (7) into an interior (8) of the window or the door (2), having a main housing (9), which is divided into at least three functional and form-changing duct sections (10, 11, 12), wherein: a first duct section (11) is designed as a flat duct with a flat side (13) abutting an end face (14) of the fixed frame (5) and the outer and inner duct sections (10, 12) either side of the first duct section form a flow opening (15, 16); the outer and inner duct sections (10, 12) are aligned with the flow opening (15, 16) towards the window or the door (2) and are designed with a curve having a radius (17, 18) towards the flat side (13) of the flat duct (11); and at least the inner duct section (12) runs from the flat side (13) at an obtuse angle (19) greater than 90° and directed away from an end face (20) of the window or the door (2).