Fire Damper Control Unit with Dual-Protocol Locking
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Solution Overview
Problem
Existing fire damper and smoke evacuation shutter control units require different types for different protocols, leading to installation complexities and potential hazardous situations due to incorrect usage.
Innovation Solution
A control unit that can operate according to two different protocols, utilizing a bi-stable actuator body with a latch and solenoid mechanism, allowing switching between operating modes, and incorporating a spring-biased notch and fuse mechanism for unlocking, with a housing designed for water and dust protection and battery-operated motor activation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different control units are used for different protocols, then each protocol can be reliably supported, but device complexity and installation complexity increase
Solution Approach 1:
The control unit is designed with a universal interface that can operate with both protocols by selecting different contact assignments. The same physical control unit can be configured to work with protocol A (where contact 1-2 triggers alarm) or protocol B (where contact 3-4 triggers alarm) through software or hardware selection, eliminating the need for multiple protocol-specific control unit models.
Solution Approach 2:
The control unit incorporates dynamic configuration capabilities where the protocol type can be selected or changed during installation or operation. This allows the control unit to adapt its behavior based on the connected sensor type, switching between protocols as needed rather than being fixed to a single protocol.
2Reliability
If different control units are used for different protocols, then protocol-specific functionality is ensured, but ease of operation and installation deteriorate
Solution Approach 1:
Service providers and installers only need to stock one type of control unit instead of multiple protocol-specific models. The universal control unit simplifies installation by reducing the complexity of selecting the correct control unit type for each protocol, while maintaining full functionality for both protocols through internal configuration options.
3Ease of operation
If a universal control unit is used for both protocols, then ease of operation improves, but device complexity increases
Solution Approach 1:
The control unit automatically detects or is configured to work with the connected sensor type, eliminating the need for complex manual configuration by the installer. The system self-adjusts its behavior based on the protocol being used, reducing the operational complexity for the user while maintaining universal compatibility.
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
Enables seamless operation with both protocols, reduces installation complexities, ensures reliable operation, and provides energy-efficient and secure activation even in power outages, with visual and audible indicators for status confirmation.
Implementation Method 1
The control unit comprises electrical locking means comprising a solenoid cooperating with the actuator body and allowing moving the actuator body from the lock position to the unlock position
Implementation Method 2
The actuator body comprising a secondary arm and a mechanical unlocking mechanism comprising a spring biased notch moveable between a first position, wherein the notch interacts with the secondary arm, thereby forcing the actuator body in the unlock position
Implementation Method 3
breaking/melting of the fuse (eg. thermos-mechanical fuse) resulting in the spring biasing the notch to the first position, thereby forcing the actuator body in the unlock position
Data Source
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AI summary
Control unit for controlling a fire damper or smoke evacuation shutter, said control unit comprising: • an incoming axis; • an outgoing axis designed to be coupled to the damper/shutter for opening and closing thereof; • a gear box coupling the incoming an outgoing axes in rotation; • a spring biasing said incoming axis, gear box, outgoing axis or damper/shutter towards a safety position of the damper; characterized in that the control unit comprises a locking means acting on the incoming axis, gear box or outgoing axis, allowing to maintain the damper/shutter in an armed position against the force of said spring.