AIR-CONDITIONING SYSTEM AND REFRIGERANT LEAKAGE PREVENTION SYSTEM
|Numéro de publication||2020/110425|
|Statut||Délivré - en vigueur|
|Date de dépôt||2019-09-12|
|Date de publication||2020-06-04|
|Propriétaire||HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC. (Japon)|
AbrégéThe present invention comprises: a normally open solenoid valve that is provided in a pipe for circulating a slightly flammable or flammable refrigerant so as to be closed by power from a commercial power supply and an auxiliary power supply; a leakage detection means for detecting leakage of the refrigerant; a first control means for closing the solenoid valve by supplying power from the commercial power supply if leakage of the refrigerant is detected by the leakage detection means; a power failure detection means for detecting power failure from the commercial power supply; and a second control means for closing the solenoid valve by supplying power from the auxiliary power supply, regardless of whether or not leakage of the refrigerant is detected by the leakage detection means, if it is detected by the power failure detection means that the power from the commercial power supply can no longer be supplied to the solenoid valve.
Classes IPC ?
- F24F 11/32 - Responding to malfunctions or emergencies
- F24F 11/36 - Responding to malfunctions or emergencies to leakage of heat-exchange fluid
- F25B 41/04 - Disposition of valves
- F25B 49/02 - Arrangement or mounting of control or safety devices for compression type machines, plants or systems