Refrigerant leak detection system

Abstract

A refrigerant leak detection system that detects a refrigerant leak from an air conditioning system. The system includes a detection alarm having a detection unit that detects leaking refrigerant and an alarm unit that alerts when the detection unit detects a refrigerant leak, a power feed adapter having a main power feed unit that supplies power to the detection alarm, and a sub power supply unit that is connected to the power feed adapter. The power feed adapter supplies power to the detection alarm from the sub power supply unit if the main power supply unit becomes unable to supply power to the detection alarm.

1 . A system that detects a refrigerant leak from an air conditioning system, comprising:
 a detection alarm having a detection unit that detects leaking refrigerant and an alarm unit that alerts when the detection unit detects a refrigerant leak;   a power feed adapter having a main power feed unit that supplies power to the detection alarm; and   a sub power supply unit that is connected to the power feed adapter,   wherein the power feed adapter supplies power to the detection alarm from the sub power supply unit if the main power supply unit becomes unable to supply power to the detection alarm.   
     
     
         2 . The refrigerant leak detection system of  claim 1 , further comprising:
 an indoor unit included in the air conditioning system; and   a shutoff device that shuts off supply of refrigerant to the indoor unit,   wherein, when a refrigerant leak from the indoor unit to which a predetermined association is made is detected by the detection unit, the shutoff device that shuts off the supply of refrigerant to the indoor unit is closed, and   when a refrigerant leak from a source other than the indoor unit to which the predetermined association is made is detected by the detection unit, the air conditioning system is shut off.   
     
     
         3 . The refrigerant leak detection system of  claim 1 , wherein:
 the detection alarm alerts through the alarm unit when an abnormality occurs in communication between the air conditioning system and the power feed adapter.   
     
     
         4 . The refrigerant leak detection system of  claim 1 , wherein the detection alarm alerts through the alarm unit when the power supply from the main power supply unit is lost. 
     
     
         5 . The refrigerant leak detection system of  claim 1 , wherein the detection alarm alerts through the alarm unit when an abnormality occurs in communication with the detection unit. 
     
     
         6 . The refrigerant leak detection system of  claim 1 , wherein the detection alarm alerts through the alarm unit when the detection alarm receives a predetermined signal from the detection unit. 
     
     
         7 . The refrigerant leak detection system of  claim 1 , wherein whether the detection unit is normal or not is determined based on an energized time to the detection unit. 
     
     
         8 . The refrigerant leak detection system of  claim 1 , wherein a function of monitoring a communication state with the air conditioning system can be switched to an enabled state and a disabled state.