Smoke Evacuation Shutter With Motor Uncoupling for Manual Operation
Solution Overview
Problem
Existing smoke evacuation shutters face challenges in being both aesthetically pleasing and functional, as current motorized systems obstruct the discharge duct and are difficult to operate manually, with limitations in controlling discharge rates between open and closed positions.
Innovation Solution
A smoke evacuation shutter with a reversible motor, a locking mechanism operable by hand, and mechanical uncoupling means that allow manual operation, enabling the motor shaft to be uncoupled from the transmission system, facilitating easier manual operation and integration without obstructing the duct.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a motorized system is used to open and close the door leaf, then the operation is automated and convenient, but the motor and connecting means form a significant obstruction in the discharge duct
Solution Approach 1:
The motor is extracted from the traditional central position and relocated to the edge of the door leaf, minimizing its projection into the discharge duct. The connecting means are designed as slender arms that extend from the edge-mounted motor to the hinge axis, reducing the overall volume occupied in the duct space.
Solution Approach 2:
The motor is positioned at the periphery (edge) of the door leaf rather than at the center, utilizing the two-dimensional surface of the door leaf for motor placement. This dimensional redistribution allows the motor to be mounted without projecting significantly into the three-dimensional discharge duct space.
2Productivity
If the door leaf can be opened completely to the open position, then smoke discharge is maximized, but the door leaf forms a significant obstruction in the discharge duct when open
Solution Approach 1:
The door leaf is designed to be dynamically positionable at multiple angles between the fully closed and fully open positions. The motorized system allows controlled positioning at intermediate angles, enabling the door leaf to be partially open to minimize obstruction while still providing adequate smoke discharge capability when needed.
3Shape
If the smoke evacuation shutter is designed to be aesthetically pleasing without grids, then the appearance is improved, but the motorized system becomes more difficult to incorporate without forming an undesired obstruction
Solution Approach 1:
The door leaf is segmented into multiple panels that can be arranged in different configurations. This segmentation allows the aesthetic design to be maintained while providing structural support for the edge-mounted motor and connecting means, enabling integration of the motorized system without compromising appearance or forming obstructions.
Data Source
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AI summary
The present invention relates to a smoke evacuation shutter (1), comprising: - a frame (2) for installing the smoke evacuation shutter (1) in a smoke evacuation duct; - at least one door leaf (3) which is arranged in the frame (2) so as to be rotatable about a hinge pin (A) between a closed position and an open position; - a reversible motor (4) which is configured to drive a motor shaft (5); - transmission means (7) for transmitting the driving movement of the motor shaft (5) to the rotating movement of the door leaf (3); and - uncoupling means (9) for manually uncoupling the motor shaft (5) from the transmission means (7). In addition, the present invention relates to a discharge system comprising such a smoke evacuation shutter (1).