Fire arrester and fire resistant structure of a fire safety cabinet
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Solution Overview
Problem
Fire safety cabinets in prior art lack adequate fire resistance, with ventilation openings prone to rapid temperature increase, potentially accelerating ignition and explosion risks due to the volatile nature of stored chemicals, failing to meet fire rating requirements.
Innovation Solution
A fire arrester with a cylindrical shell, a fire blocking core, and a heat insulation layer, featuring a connection portion with holes for easy installation and a fire prevention opening filter that delays temperature transmission and maintains effective ventilation, preventing flame spread and explosions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ventilation openings are provided on the cabinet to maintain ventilation and exhaust hazardous gases, then ventilation effectiveness is improved, but fire resistance deteriorates due to rapid temperature increase at openings during fire
Solution Approach 1:
A fire arrester is installed at the ventilation opening to act as an intermediary component. The fire arrester includes a flame arrester core with heat-resistant fibers and a shell that delays temperature transmission while allowing gas passage. This mediator enables the system to maintain both ventilation functionality and fire resistance by filtering flames and hot gases while permitting airflow.
Solution Approach 2:
The fire arrester changes the temperature parameter at the ventilation opening by introducing heat-resistant materials (aluminum silicate fibers, basalt fibers) and a heat insulation layer that delay temperature transmission. The structure transforms the opening from a direct pathway for hot gases to a controlled interface where temperature is moderated, allowing ventilation to continue at safe temperature levels during fire conditions.
2Ease of manufacture
If the cabinet structure is simplified for ease of manufacture and maintenance, then manufacturing cost and complexity are reduced, but fire rating performance may be compromised
Solution Approach 1:
The fire arrester is designed as a segmented, modular component that can be independently manufactured and installed. The flame arrester core is separated from the shell, allowing independent fabrication of heat-resistant fiber cores and metal shells. This segmentation simplifies manufacturing while maintaining fire rating performance, as each component can be optimized separately and assembled into the complete fire protection device.
Solution Approach 2:
The fire arrester core uses heat-resistant fibers (aluminum silicate or basalt) that can be produced cost-effectively. The design accepts that the core may degrade under extreme fire conditions and can be replaced, while the metal shell provides durable, reusable structural support. This approach balances cost-effective manufacturing with adequate fire protection performance.
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 solution provides a high fire rating, simple structure, easy maintenance, and effective flame resistance, preventing the spread of flammable gases and liquids, and delaying the onset of fires or explosions in chemical storage cabinets.
Implementation Method 1
a heat insulation layer is provided between the bottom plate and the cover plate
Implementation Method 2
a fire blocking core is provided in the accommodating cavity
Data Source
AI summary
A fire resistant structure includes a bottom plate and a cover plate connected together, a heat insulation layer between the bottom plate and the cover plate, wherein the bottom plate includes a fire prevention opening, the fire prevention opening having a fire prevention opening cover nut, wherein one side of the fire prevention opening near the heat insulation layer is provided with a fire prevention opening filter, the fire prevention opening filter connected to the bottom plate. A fire arrester is provided on the cover plate, the fire arrester includes a fire arrester shell, an accommodating cavity provided therein, a fire blocking core in the accommodating cavity, and a connection portion extending from one end of the fire arrester shell, wherein a plurality of connection holes are provided on the connection portion. An end face of the fire blocking core is flush with an end face of the connection portion.