This device is the world's first mass-produced fire-extinguishing equipment designed according to fire-extinguishing standards for maximizing the performance of perfluorohexanone. The device solves the safety problem caused by a fire in a small space. Perfluorohexanone is currently the most efficient, safe, and clean fire extinguishing medium in the world. It does not produce any toxic substances after the fire has been extinguished and will not pose additional safety problems to the equipment and personnel in the space. The device offers greater environmental protection and human health and safety more than all other fire extinguishing devices.