Fire-extinguishing device asymmetric slot lock mechanism
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Solution Overview
Problem
Existing fire-extinguishing devices face issues such as jamming, inefficient release of gas fire extinguishing agents, reduced processability, and reliance on direct current supply, leading to reduced efficiency and reliability.
Innovation Solution
A fire-extinguishing device design featuring a locking nut connected to a container outlet, a push-bar casing with symmetrical slots, and a thermosensitive element that allows for reliable release of the gas extinguishing agent through a hollow needle mechanism, enhancing assembly and operation by preventing jamming and ensuring effective agent release.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the push-bar sleeve is connected with the spray element through only one slot, then the device structure is simple, but the push bar may be positioned noncoaxially towards the axis of exhaust opening, resulting in jamming or breaking-off
Solution Approach 1:
The patent employs asymmetric slot positioning and asymmetric push-bar geometry where the slot is offset from the central axis and the push-bar has an asymmetric cross-section that only fits in one orientation. This asymmetric design ensures coaxial alignment of the push bar with the exhaust opening axis, preventing jamming and breaking-off while maintaining structural simplicity.
2Ease of manufacture
If the pin is performed with a uniform cross section along its length, then the manufacturing is simple, but the release of GFEA is ineffective
Solution Approach 1:
The pin is designed with varying cross-sectional dimensions along its length, where the upper portion has a larger diameter for structural strength and the lower portion has a smaller diameter for effective engagement with the push-bar mechanism. This local quality variation ensures both manufacturing feasibility and effective GFEA release by optimizing the pin's functional properties in different regions.
3Volume of moving object
If the lock and release device is connected with the cylinder directly and the closure element is positioned immediately in the lock and release device, then the assembly is compact, but the processability of the device is reduced
Solution Approach 1:
The device is segmented into distinct functional modules: the lock and release device as one module, the closure element as a separate component, and the cylinder as another component. These segmented modules can be manufactured independently and then assembled together, improving processability while maintaining a compact overall configuration through modular integration.
4Ease of operation
If the forced-actuation device is mounted in the upper part of spray-element cap, then the actuation is direct, but the processability decreases due to additional working hole requirement and DC supply dependency
Solution Approach 1:
The patent introduces an intermediary mechanical transmission mechanism that couples the actuation force from the forced-actuation device to the thermal lock. This intermediary mechanism allows the actuation device to be mounted in a more accessible location while still effectively triggering the release mechanism, eliminating the need for direct mounting in the spray-element cap and reducing the number of working holes required.
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 design increases the reliability and processability of fire-extinguishing devices, leading to improved fire extinction performance by preventing jamming and ensuring effective release of the gas extinguishing agent.
Implementation Method 1
the thermosensitive element forms up a retainer for the specified rod and prevents release of the spring, whereas destruction of the thermosensitive element causes release of the spring
Implementation Method 2
This activates a spring-loaded push-bar which is performed as a hollow needle; it breaks through cylinder's membrane
Data Source
AI summary
The proposed technical solution relates to fire prevention equipment and can be used in industrial and civilian properties, including with an increased risk of fire, for locating hot spots, and also for efficiently extinguishing fires in facilities using automatic fire-extinguishing systems. The technical problem addressed by the claimed invention is to produce a fire-extinguishing device which does not have the drawbacks mentioned and has increased reliability, efficiency and manufacturability. The technical result of the claimed invention consists in elimination of the drawbacks of the prior art, in an increase in the reliability and manufacturability of a fire-extinguishing device and thus in an increase in the fire-extinguishing efficiency overall.