Fire Protection Flap Stop Alignment for Low Pressure Loss
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Solution Overview
Problem
Existing fire protection flaps do not guarantee that the shut-off valve is aligned parallel to the direction of flow in the open position, leading to pressure losses and unwanted noise due to manufacturing tolerances in transmission mechanisms.
Innovation Solution
The actuating handle is designed with additional elements or materials that prevent further displacement or twisting, ensuring the shut-off valve is aligned parallel to the flow by overcoming additional forces, and an adjustable stop is installed inside the housing to maintain this alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the shut-off valve is adjusted on site to align parallel to the direction of flow, then the alignment precision is improved, but the device complexity and installation time increase due to requiring manual adjustment
Solution Approach 1:
The stop is pre-adjusted and fixed at the factory to the desired location on the inside of the housing, eliminating the need for on-site adjustment. This preliminary action ensures that when the shut-off valve is installed, it will automatically align parallel to the direction of flow without requiring manual intervention, thus improving alignment precision while avoiding increased device complexity and installation time
Solution Approach 2:
The design enables the fire protection flap to self-align parallel to the direction of flow through the pre-positioned stop that limits the pivot range. The shut-off valve automatically engages with the pre-adjusted stop during installation, ensuring correct alignment without requiring external adjustment mechanisms or manual intervention, thereby maintaining simple device structure while achieving precise alignment
2Loss of energy
If the shut-off valve is adjusted on site to align parallel to the direction of flow, then the pressure losses are reduced, but the loss of time increases due to requiring on-site adjustment
Solution Approach 1:
The stop is pre-adjusted and fixed at the factory to the desired location on the inside of the housing, eliminating the need for on-site adjustment. This preliminary action ensures that when the shut-off valve is installed, it will automatically align parallel to the direction of flow without requiring manual intervention, thus improving alignment precision while avoiding increased device complexity and installation time
Solution Approach 2:
The design enables the fire protection flap to self-align parallel to the direction of flow through the pre-positioned stop that limits the pivot range. The shut-off valve automatically engages with the pre-adjusted stop during installation, ensuring correct alignment without requiring external adjustment mechanisms or manual intervention, thereby maintaining simple device structure while achieving precise alignment
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 configuration ensures the shut-off flap remains parallel to the flow in the open position, compensating for manufacturing tolerances and reducing pressure losses and noise, while the triggering device automatically shifts the actuating handle into a closed position in case of a fire.
Implementation Method 1
The intermediate element (14) has at least one resiliently constructed area (22), with the resiliently constructed area (22) acting laterally on the actuating handle (4)
Implementation Method 2
In the event of a fire, the fusible link melts, so that as a result the bolt is automatically shifted outwards to a certain extent by the spring
Data Source
Figure 1a
Figure 1b~1d
Figure 1e~1g
AI summary
The invention relates to a fire protection flap with a housing (1) and with a shut-off flap (2) mounted therein so that it can swivel, in particular in the center of the housing cross-section, between an open position and a closed position about a swivel axis (23). H. for tensioning the shut-off flap (2) from its closed position against the restoring force into its open position, an actuating handle ( 4) is provided, with at least one stop (7) being provided, against which the shut-off flap (2) rests directly or indirectly in its open position, and the fire protection flap has a triggering device (8) which can be brought into a fixing position and controlled by heat or the like can be triggered and thus automatically moved into a release position, and wherein the actuating handle (4) and thus the shut-off flap (2) connected to it, in the open position, move against a restoring force by means of the triggering device (8) located in its fixing position into one of the open position of the shut-off flap (2) corresponding position can be fixed and from this fixed position to off releasing the triggering device (8) and the resulting change in the triggering device (8) to its release position can be pivoted by the restoring force into a second position corresponding to the closed position of the shut-off valve (2).