Fire spread delay device

Exterior wall-mounted fire spread delay device using gas mat protrusion and fire-extinguishing fluid spray to slow fire propagation to upper floors

This technology features a case mounted on the exterior wall above openings such as balconies. In the event of a fire, gas is injected into a folded mat inside the case, causing it to inflate outward and delay flames from spreading to the floor above.

In high-density buildings like apartment complexes, fire easily spreads from lower to upper floors through openings like balconies, leading to significant loss of life and property. Existing fire-resistant roll screens, while effective at blocking external spread, often cover the entire opening, obstructing firefighting efforts and blocking emergency escape routes via windows.

This technology consists of a first mat body that inflates into a ring shape when gas is injected, and a second mat body equipped with channels for fire-extinguishing fluid, both connected to their respective tanks. The system also integrates a sprinkler, a rotating door, and a rope ladder storage net beneath the case. When the rotating door opens, the seal breaks, deploying the rope ladder to secure an escape route. Suitable for high-rise apartments, office buildings, hotel balconies, and retrofitting older residential buildings, it delays fire spread while simultaneously facilitating firefighting and evacuation.

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Key Features:

• A case coupled to the exterior wall above an opening, featuring an openable front and internal storage for a folded gas mat
• A gas mat stored folded inside the case that inflates and protrudes forward upon gas injection to delay fire spread to upper floors
• A first mat body that inflates into a ring shape and a second mat body that forms fluid channels and blocks the area inside the ring
• A gas tank connected to the gas mat via a first conduit, a fire-extinguishing fluid tank connected via a second conduit, and a control unit for operating the gas valve

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This invention was developed with support from the Ministry of Education's LINC 3.0 project.

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