Compact DIN Rail Cooling and Extinguishing System
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Solution Overview
Problem
Existing automatic cooling and extinguishing systems for protected devices like electrical switchboards are cumbersome to assemble and costly, requiring replacement of the media carrier after initiation, which complicates maintenance and increases expenses.
Innovation Solution
A compact cooling and extinguishing system with a pressurized medium based on chemical extinguishing agents, equipped with a pressure indicator, temperature or smoke switch, valve, and safety sensors, along with an independent power supply, allowing for monitoring and controlled release of the cooling and extinguishing medium, and capable of operation from 30°C with a compact design for easy installation on DIN rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a media carrier is broken upon initiation, then the cooling and extinguishing medium is released, but a new automatic cooling and extinguishing system must be installed, increasing assembly complexity and cost
Solution Approach 1:
The system uses the thermal energy from the protected device itself to trigger the release of the cooling medium through the thermal decomposition of the carrier material, eliminating the need for external initiation systems and reducing assembly complexity
Solution Approach 2:
The carrier material is designed to undergo thermal decomposition at specific temperature thresholds, changing its physical-chemical properties to transition from a stable containment state to a releasing state, thereby automating the initiation process
2Reliability
If a media carrier is broken upon initiation, then the cooling medium is released, but replacement of the carrier is required, increasing maintenance cost and time
Solution Approach 1:
The carrier is designed as a single-use component that sacrifices itself by undergoing thermal decomposition to release the cooling medium, eliminating the need for expensive replacement and simplifying maintenance to merely replacing the small carrier component
Solution Approach 2:
The carrier material undergoes phase transition from solid stable form to decomposed state, permanently changing its properties to ensure single-use operation and eliminate the need for costly carrier replacement
3Loss of time
If the system operates from 30°C, then early cooling intervention is achieved, but the carrier must remain stable at lower temperatures
Solution Approach 1:
The carrier material is formulated with temperature-dependent decomposition characteristics, remaining stable below 30°C but undergoing controlled decomposition at higher temperatures to trigger timely release of the cooling medium
Solution Approach 2:
The potential harmful effect of thermal decomposition is converted into a beneficial automatic initiation mechanism, where the carrier's decomposition at elevated temperatures reliably triggers the release of cooling medium to prevent fire hazards
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 system effectively suppresses thermal effects and prevents fires by releasing the cooling and extinguishing medium at critical temperatures, maintaining device functionality and safety while reducing assembly complexity and costs, and operating as an emergency passive fire extinguishing system even during power outages.
Implementation Method 1
the cooling effect of the medium is used, which is characterized in that during initiation their temperature, when released from the carrier, is in negative values
Implementation Method 2
the medium is released from the broken carrier, cools the interior of the protected device
Implementation Method 3
a pressurized cooling and extinguishing medium... with a valve, which is connected to the carrier of the cooling and extinguishing medium by connection, wherein the valve is further provided with a nozzle for release of the cooling and extinguishing medium
Data Source
AI summary
The compact cooling and extinguishing system is designed to be arranged in a protected device, in particular electrical switchboards with a DIN rail, wherein the compact automatic cooling and extinguishing system consists of a carrier (14) containing inside a pressurized cooling and extinguishing medium, wherein the medium is based on chemical extinguishing agents, which are characterized in that during initiation their temperature, when escaping the carrier, is in negative values, i.e. temperature below 0° C., below the freezing reference point, the system is further provided with a pressure indicator for monitoring the condition of the cooling and extinguishing medium, wherein the compact cooling and extinguishing system is further provided with a first temperature, pressure or smoke switch (15) and a valve (5), which is connected to the carrier of the cooling and extinguishing medium by connection (18), wherein the valve is further provided with a nozzle (6) for release of the cooling and extinguishing medium into the space of the protected device and the valve (6) is further connected to the relay (7). The system is provided with an external power supply (13). The first switch (4) is set to open the valve (5) when the given temperature value is reached in the protected device. In a preferred embodiment, the compact cooling and extinguishing system is provided with a compact cover (2) for mounting on a DIN rail.