A gas generating device for fire extinguishing bomb lance

By employing a fire extinguishing projectile spray device that generates gas through a chemical reaction on a drone, the problem of increased load due to compressed air launch in drone fire extinguishing devices has been solved, achieving lightweight and efficient fire extinguishing while extending flight time.

CN224415908UActive Publication Date: 2026-06-26LUOYANG GUOFANG TECHNOLOGY CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LUOYANG GUOFANG TECHNOLOGY CO LTD
Filing Date
2025-08-28
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing drone firefighting devices require high-pressure gas cylinders for compressed air launch, which increases the drone's payload and size, and affects its flight time.

Method used

The device uses a chemical reaction to fill the gas generator with gas generating materials and ignition agent. The gas is then detonated by an igniter to generate a large amount of gas, which instantly propels the fire extinguishing bomb to launch. The device includes a spray nozzle, a gas generator, and a connecting tube. It uses baffles and vents to form an expansion chamber and a damping buffer system to reduce high-pressure impact.

Benefits of technology

It achieves gas generation that is small in size, light in weight, and has a large instantaneous thrust, reducing the payload and size of the UAV, extending its endurance, and improving the stability of fire extinguishing bomb launch and the flight safety of the UAV.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224415908U_ABST
    Figure CN224415908U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of gas generating devices for fire extinguishing bomb spray tube, including cylindrical spray tube and gas generator, the spray tube is fixedly connected with connecting cylinder, connecting cylinder is connected with gas generator by connecting flange, gas generating cavity is opened in gas generator, the inside surface of connecting cylinder is fixedly provided with baffle, the side surface of baffle is evenly provided with several air holes. Gas generating material and igniter etc. are filled in gas generating cavity, can be carried by unmanned aerial vehicle igniter to make gas generating material quickly produce a large amount of gas, fire extinguishing bomb in spray tube is quickly pushed and launched to fire scene to extinguish fire. A large amount of gas is produced in millisecond level time through chemical reaction, with the advantages of small volume, light weight, instantaneous thrust, greatly reduce the load and volume of unmanned aerial vehicle, can effectively prolong its endurance time.
Need to check novelty before this filing date? Find Prior Art