Rotating Actuator Ventilation Device for Window Frames
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Solution Overview
Problem
Existing window and door ventilation systems face issues such as interference with closing mechanisms, potential damage during storage or transport, and adaptation challenges for different frame designs, along with grinding noises due to dimensional inaccuracies.
Innovation Solution
A ventilation device with a simple, two-part structure consisting of a housing part and a rotatable actuator, designed to regulate airflow without changing size or external appearance, featuring a circular arc shape for compatibility with window or door axes, and a seal to prevent air leakage, allowing easy installation and adjustment without interfering with closing mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the ventilation device is arranged in the rebate space, then it can utilize the available space for ventilation, but it interferes with the closing mechanism and causes grinding noises due to dimensional inaccuracies
Solution Approach 1:
The ventilation device is segmented into two independent parts: a housing part fixed to the frame and an actuator mounted on the casement. This segmentation allows each part to be optimized independently - the housing part provides stable mounting while the actuator can rotate freely without interfering with the closing mechanism, thus resolving the conflict between space utilization and closing reliability
Solution Approach 2:
The actuator is designed to rotate about an axis that is perpendicular to the plane of the casement, utilizing the third dimension (depth) rather than occupying the rebate space. This dimensional change allows the ventilation function to be added without interfering with the two-dimensional closing motion of the window, eliminating grinding noises while maintaining ventilation effectiveness
2Ease of operation
If the slide is arranged on the room-side end face of the casement to close off air flow, then ventilation can be controlled, but components protrude causing damage or injuries during storage, transport or cleaning
Solution Approach 1:
The actuator is designed with a circular arc shape in cross-section, which allows it to rotate smoothly while maintaining a compact profile. The curved design enables the actuator to retract within the boundaries of the sash overlap when not in use, eliminating protruding components that could cause damage during handling while still providing full ventilation control functionality
3Ease of operation
If the ventilation device is adjusted to regulate air flow, then ventilation control is improved, but the size and external design must change
Solution Approach 1:
The actuator is designed as a dynamic component that rotates about a fixed axis to regulate air flow. The rotation occurs within the existing boundaries of the sash overlap, allowing the actuator to adjust ventilation while maintaining a consistent external profile. The dynamic rotation enables full ventilation control without changing the overall size or external design of the ventilation device
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The window/door has a casement frame (2) covering a blind frame (1), and a rebate area forming a circulating air duct, where the frames have air intake openings (4) for air flow (13). A ventilation device is arranged at the blind frame for passage of the air flow, and has a control member with which the air flow between the frames is adjusted. The ventilation device has a housing part connecting the ventilation device with one of the frames. The control member is held rotatably in the housing part, and a rotation axis is aligned in longitudinal direction to the air duct.