Automatic fire-extinguisher

The utility model relates to an automatic fire-extinguisher which belongs to a fire extinguishing device. The utility model comprises a reaction chamber, fire fighting agents, an igniter pad, an automatic controller, sealing paper, a flow guiding tank, a flow guiding cover, and spring devices. The fire extinguishing agents and the igniter pad are arranged in the reaction chamber, and the upper surfaces of the fire extinguishing agents and the igniter pad are of the sealing paper. The igniter pad is connected with the automatic controller by guiding wires, and the upper part of the reaction chamber is provided with current limiting covers with current limiting holes. The upper part of the flow guiding tank is provided with the flow guiding cover, and the flow guiding tank and the flow guiding cover are arranged at the outsides of the reaction chamber and the spring devices. The utility model has the advantages of fire-extinguishing automation, high safety factor, high fire-extinguishing efficiency, asepsis, harmlessness, etc.