REFRIGERANT CYCLE SYSTEM

• Main Authors: YOSHIMI, Atsushi, IWATA, Ikuhiro, MINAMIDA, Tomoatsu, YAMADA, Takuro, KUMAKURA, Eiji
• Format: Patent
• Language: English; French; German
• Published: 20.04.2022
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

Refrigerant is caused to be in a superheating state without impairing the performance of a cascade heat exchanger. A refrigerant cycle system (100, 200) includes a first refrigerant circuit (1, 201), a second refrigerant circuit (2, 202), and a first cascade heat exchanger (21, 221). The first cascade heat exchanger (21, 221) exchanges heat between a first refrigerant that flows in the first refrigerant circuit (1, 201) and a second refrigerant that flows in the second refrigerant circuit (2, 202). The refrigerant cycle system (100, 200) includes a switching mechanism (13, 25, 213, 225). The switching mechanism (13, 25, 213, 225) switches a flow path of a refrigerant of at least either one of the first refrigerant circuit (1, 201) and the second refrigerant circuit (2, 202). The first cascade heat exchanger (21, 221) includes a first main heat exchanging unit (21a, 221a) and a first sub heat exchanging unit (21b, 221b). The first sub heat exchanging unit (21b, 221b) is configured to cause the first refrigerant that has passed through the first main heat exchanging unit (21a, 221a) to be in a superheating state.