FIRE PREVENTION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a fire prevention system which prevents the fire that is caused by the leakage of an inflammable refrigerant used to a refrigerating air conditioner such as a general air conditioner and a refrigerator into a room. SOLUTION: A leakage sensor 101 which detects an inflammable refrigerant, a leakage detection processing part 103 and a leakage notification processing part 104 are incorporated in a device using a refrigerant in an explosion-proof construction. The part 103 decides the abnormal density by a density change analyzing means which detects the density change and based on an environment density pattern of the ordinary inflammable gas and notifies a gas supply cutoff device 106 of the abnormal density by wire or wireless via the part 104. Then the device 106 stops the supply of gas to a gas device 109 and then notifies a host device 112 of the information on occurrence of the abnormal density.