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.
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
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.
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.
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.
Smart Images

Figure CN224415908U_ABST