Meltable Plugging Fire Extinguisher for Confined Spaces
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Solution Overview
Problem
There is a lack of effective fire extinguishing devices for confined or semi-confined spaces, where early fire prevention and control are challenging due to the absence of temperature control devices before the ignition point, leading to uncontrolled fires and potential damage.
Innovation Solution
A fire extinguishing device with pressure-resistant meltable fireproof plugging pieces and a control system, including a pressure fire extinguishing agent, early warning devices, and a pressure valve, which melts to expose ejecting openings and release the extinguishing agent when a temperature rise is detected, preventing ignition and suppressing fires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If alarm sensing equipment is installed in confined spaces, then fire detection capability is improved, but response time is insufficient because people cannot reach the target positions quickly enough
Solution Approach 1:
The fire extinguishing device is pre-installed within the confined space (electrical cabinet) and pre-charged with extinguishing agent. When fire is detected, the device automatically activates and releases the extinguishing agent immediately at the fire source, eliminating the time loss associated with human response and deployment.
Solution Approach 2:
The patent introduces an automatic fire extinguishing device as an intermediary system between the fire detection alarm and the fire suppression action. This intermediary device bridges the gap by automatically responding to alarm signals and delivering extinguishing agent directly to the fire source without requiring human intervention.
2Reliability
If temperature control devices are installed before ignition point, then fire prevention capability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple functions into a single integrated device: temperature sensing, automatic activation, and fire extinguishing agent delivery. By merging the detection and suppression functions into one compact unit installed within the electrical cabinet, the system achieves effective fire prevention without proportionally increasing overall device complexity.
Solution Approach 2:
The fire extinguishing device is designed to automatically detect temperature changes and activate without external control. The device monitors its own environment and self-activates when fire conditions are detected, eliminating the need for complex external control systems while maintaining high reliability.
3Speed
If plugging pieces made of meltable material are used in ejecting openings, then automatic activation response speed is improved, but structural strength is reduced
Solution Approach 1:
The plugging pieces are strategically placed only in specific ejecting openings where automatic activation is needed, rather than throughout the entire device structure. This localized use of meltable material allows rapid activation response at critical points while maintaining overall structural integrity of the device body and other components.
Solution Approach 2:
The plugging pieces are made of materials with specific melting points that change from solid to liquid state at predetermined temperature thresholds. This parameter change (phase transition) enables automatic activation at the precise moment when fire conditions are detected, providing rapid response without requiring mechanical actuation mechanisms that would compromise structural strength.
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 device effectively suppresses fires at the initial temperature rise, minimizing damage and providing a crucial time interval for extinguishment by releasing the extinguishing agent through melted plugging pieces, thereby controlling fires in airtight or semi-airtight spaces.
Implementation Method 1
the plugging piece corresponding to the local part starts to melt, the ejecting opening is entirely exposed after the plugging piece melts
Implementation Method 2
a pressure fire extinguishing agent container communicated with the accommodating space through the pressure valve
Data Source
AI summary
A fire extinguishing device includes a pressure fire extinguishing agent and an accommodating space (1) capable of storing the fire extinguishing agent. A lot of cut-through ejecting openings (2) are defined in an outer wall of the accommodating space (1), and the ejecting openings (2) are plugged by plugging pieces (3) made of a pressure-resistant meltable fireproof material. In the case of a local temperature rise or an open fire of the target in an airtight or semi-airtight space, the plugging piece (3) on the ejecting opening (2) is melted to make the ejecting opening (2) cut through, the pressure fire extinguishing agent stored in the accommodating space is further ejected from the ejecting opening (2) to suppress a fire point or a high temperature point of the target, therefore the fire is controlled at the first time.