Remote Suction Duct Shutoff with Auto-Return Shutter Reset
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Solution Overview
Problem
Existing remote shutdown devices for suction or ventilation installations require manual repositioning of the shutter after shutdown, leading to potential misoperation and premature restart, which can cause installation deterioration.
Innovation Solution
A remote stop device with elastic return means that automatically returns the shutter to the suction position after shutdown, utilizing a button-actuated mechanism to partially close the duct initially and then complete closure by suction pressure, reducing user effort and ensuring correct positioning upon restart.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shutter is manually repositioned after shutdown, then the user has control over the shutter position, but manipulation errors occur and the user must exert continuous effort to ensure correct positioning
Solution Approach 1:
The shutter automatically returns to the suction position using elastic return means after the installation stops, eliminating the need for manual repositioning by the user. The system serves itself by automatically resetting the shutter to its initial position, ensuring reliability without requiring continuous user intervention or effort.
2Reliability
If the button actuates the shutter over the entire stroke, then complete closure is achieved, but the force required by the user increases significantly
Solution Approach 1:
The shutter stroke is divided into two distinct parts: the first part is actuated by the button through actuating means, and the second part is completed automatically by the depression acting on the shutter. This segmentation allows the user to apply force only over a limited initial stroke, while the system completes the remaining travel without requiring additional user effort, thus reducing the total force required while ensuring complete closure.
Solution Approach 2:
The depression acts as an intermediary force that takes over from the button actuation. After the button initiates the shutter movement over a limited stroke, the depression generated in the suction duct downstream of the shutter becomes the driving force to complete the closure. This intermediary mechanism transfers the actuation task from the user to the system's operational parameters.
3Reliability
If the shutter remains in the closed position after shutdown, then the depression is maintained, but the installation cannot be restarted until manual intervention occurs
Solution Approach 1:
The elastic return means automatically reset the shutter to the suction position after the installation stops and the depression decreases, enabling the system to prepare for restart without manual intervention. This self-service mechanism eliminates the time loss associated with manual shutter repositioning, allowing immediate restart when needed while maintaining reliable shutdown detection during the closed period.
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
Prevents undesired shutdowns and improves ergonomics by minimizing user effort and ensuring the shutter is in the correct position for restart, thus reducing the risk of installation deterioration.
Implementation Method 1
the invention relates to a remote stop device for a suction or ventilation installation, characterized in that it comprises elastic return means, arranged to bring the shutter back from the closed position to the suction position
Implementation Method 2
Being designed to be actuated solely by the depression created in the suction duct downstream of the shutter, over a second part of the stroke, so as to completely close the duct suction
Data Source
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AI summary
The invention relates to a remote shutoff device (12) for a suction or ventilation apparatus that includes a suction duct (15) as well as a stopper (19), the suction duct intended for connection to the suction or ventilation apparatus at a downstream end (16), in the exhaust flow (F) circulation direction, and for connection to a suction nozzle at an upstream end, the stopper (19) being pivotable between a suction position wherein the stopper does not block the duct (15), so that suction in the nozzle can be achieved, and a stopping position, wherein the stopper blocks the duct (15), so that a significant depression is generated downstream from the shutoff device (12), intended to be detected by the suction or ventilation apparatus (1) in order to cause the latter to be shut off.