Fire-Extinguishing Bag With External Extinguisher Compartment
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Solution Overview
Problem
The risk of fires from lithium-ion batteries in aviation poses a significant danger due to uncontrolled thermal energy release, improper extinguishing attempts leading to explosions, and the release of toxic substances, with existing solutions not providing a quick and efficient means to extinguish such fires effectively.
Innovation Solution
A flexible, rollable, and foldable bag with an inner compartment for hot or burning objects and an external compartment for a fire extinguisher, where the fire extinguisher can be easily accessed and activated, using fire-retardant materials and a Velcro connection for compact storage and quick deployment, ensuring the extinguisher remains in the outer compartment during use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the fire extinguisher is integrated inside the bag, then the bag structure is compact and unified, but the fire extinguisher cannot be quickly accessed during emergency
Solution Approach 1:
The bag is divided into two detachable parts: an inner bag for containing the burning object and an outer compartment for housing the fire extinguisher. This segmentation allows the fire extinguisher to be quickly accessed by simply removing the outer compartment, while maintaining a unified compact structure when stored together.
Solution Approach 2:
The outer compartment with the fire extinguisher is pre-positioned and detachably connected to the inner bag. In case of fire, the outer compartment can be immediately removed and the fire extinguisher activated without needing to search or disassemble the bag structure, enabling preliminary emergency response action.
2Ease of manufacture
If the bag is made rigid to protect contents, then structural protection is improved, but the bag cannot be rolled or folded for compact storage
Solution Approach 1:
The bag is constructed from flexible fire-retardant material that can be rolled or folded for compact storage while maintaining sufficient structural integrity to contain hot and/or burning objects. The flexibility allows the bag to be stored in small spaces on aircraft, while the fire-retardant properties provide necessary protection.
Solution Approach 2:
The bag uses composite material construction combining flexibility with fire resistance. The material properties are engineered to provide both the necessary strength to contain burning objects and the flexibility to be rolled or folded for compact storage in confined spaces.
3Quantity of substance
If the bag is made large to accommodate burning objects, then containment capacity is improved, but the bag cannot be stored in confined spaces like aircraft
Solution Approach 1:
The bag transitions from a compact rolled or folded storage state to an expanded operational state when needed. This dynamic transformation allows the bag to provide sufficient containment capacity for burning objects during use while occupying minimal space during storage in confined aircraft environments.
Solution Approach 2:
The inner bag can be nested within or alongside the outer compartment when not in use, maximizing space utilization. The detachable design allows the components to be stored efficiently together, providing large containment capacity when deployed while minimizing storage volume.
4Temperature
If water is used to extinguish lithium-ion battery fires, then cooling effect is improved, but hydrogen gas formation and explosion risk increase
Solution Approach 1:
The bag creates a contained environment that isolates the burning lithium-ion battery from reactive substances. The fire extinguisher provides appropriate extinguishing agent that does not react with lithium metal to form hydrogen gas, and the bag structure prevents escape of toxic and combustible substances, effectively creating a safer containment environment.
Solution Approach 2:
The design converts the potential harm of water-based extinguishing (hydrogen gas formation) into benefit by providing alternative appropriate extinguishing agents and containment that prevent the harmful chemical reaction while still achieving fire suppression and cooling effects.
Data Source
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AI summary
The invention relates to a flexible bag comprising an inner compartment for receiving a hot and/or burning object, the bag being able to be rolled up and/or folded and having an opening for the insertion of the object into the inner compartment of said bag. According to the invention, a outer compartment that can be accessed from the exterior is provided on the third of the bag lying opposite the opening, a fire extinguisher being housed in said outer compartment in order to hold and dispense a fire-extinguishing agent.