L-Shaped Window Ventilation Device Actuator
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Solution Overview
Problem
Existing window and door ventilation devices face issues such as damage during storage or transport, grinding noises due to dimensional inaccuracies, and impaired closing mechanisms due to the design and placement of rebate fans and seals.
Innovation Solution
A ventilation device with a simple, L-shaped design divided into two sections, where the first section is attached to the sash frame transversely and the second section extends from the room-side end face, featuring an actuator that adjusts to regulate airflow without protruding beyond the sash lap, ensuring easy assembly and disassembly, and preventing damage during transport.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the ventilation device is arranged in the rebate space with functional fitting components, then ventilation function is achieved, but the position is limited and may cause grinding noises due to dimensional inaccuracies
Solution Approach 1:
The ventilation device is divided into two sections: a first section attached to the sash frame and a second section extending from the room-side end face. This segmentation allows each section to be optimized independently, with the first section providing ventilation function and the second section ensuring proper positioning without interfering with closing mechanisms.
2Ease of operation
If the ventilation device protrudes from the end face of the sash, then airflow control is improved, but damage or injuries can occur during storage or transport
Solution Approach 1:
The actuator is designed to be adjustable in the longitudinal direction of the air duct, allowing it to move between a first overlapping position (retracted) and a second released position (extended). This dynamic positioning enables airflow control when needed while preventing protrusion during storage or transport.
3Reliability
If the rebate fan is arranged in the rebate area, then ventilation is achieved, but the closing mechanism may be impaired due to space occupation
Solution Approach 1:
The ventilation device is positioned to extend from the room-side end face of the window frame rather than occupying the rebate area. The first section is attached to the sash frame and the second section extends outward, utilizing the depth dimension to provide ventilation function without interfering with the closing mechanism's operational space.
4Productivity
If the ventilation device uses the entire rebate area height, then airflow capacity is increased, but grinding noises occur due to dimensional inaccuracies
Solution Approach 1:
The first section of the ventilation device is designed to be smaller than the height of the sash lap, creating a localized ventilation opening that does not extend across the entire rebate area. This localized approach maintains sufficient airflow capacity while avoiding contact with the seal at the ends of the rebate fan, thereby preventing grinding noises.
Data Source
Figure 1~2
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Figure 5~7
AI summary
The window or door has a glare and wing framework (1.2). A ventilation device (10) is provided and having a first section (15) which is arranged between the window frames (1) and a side framework (2). A second section (16) is provided over a wing part (12) and which starts from a surface (17) blended with the framework (1) and which encompasses the wing part.