US 11,982,454 B2
Refrigerant leakage notifying device and refrigeration cycle system including refrigerant leakage notifying device
Shuuichi Suzuki, Osaka (JP); and Shinya Matsuoka, Osaka (JP)
Assigned to Daikin Industries, Ltd., Osaka (JP)
Filed by DAIKIN INDUSTRIES, LTD., Osaka (JP)
Filed on Jan. 7, 2022, as Appl. No. 17/570,953.
Application 17/570,953 is a continuation of application No. PCT/JP2020/026621, filed on Jul. 8, 2020.
Claims priority of application No. 2019-130642 (JP), filed on Jul. 12, 2019.
Prior Publication US 2022/0128253 A1, Apr. 28, 2022
Int. Cl. F24F 11/36 (2018.01); F24F 11/52 (2018.01); F24F 11/526 (2018.01)
CPC F24F 11/36 (2018.01) [F24F 11/52 (2018.01); F24F 11/526 (2018.01)] 19 Claims
OG exemplary drawing
 
1. A refrigerant leakage notifying device comprising:
a refrigerant sensor configured to detect a refrigerant and to output a detection signal according to a detection result;
a determination unit configured to receive the detection signal outputted from the refrigerant sensor and to determine that a leakage of the refrigerant exists when a value of the detection signal received exceeds a reference value;
a notification unit configured to provide notification that the leakage of the refrigerant exists with at least one of sound and light in a case in which the determination unit has determined that the refrigerant is leaking; and
an output unit provided separately from the refrigerant sensor, the output unit being configured to output a test signal to the determination unit by outputting the test signal to an electric circuit connecting the refrigerant sensor and the determination unit,
the test signal being configured to cause the determination unit to determine that the refrigerant is leaking upon the determination unit receiving the test signal, the test signal corresponding to the detection signal outputted from the refrigerant sensor upon refrigerant leakage.