Patent ID: 11912922
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC C  F | IPC C  F

Claim 0:
1. A refrigerant cycle apparatus for freezing or cold storage comprising:
a showcase,
a refrigerant circuit including a compressor, a radiator, a decompressing portion, and a heat absorber; and
a refrigerant enclosed in the refrigerant circuit,, wherein
the compressor, the radiator, the decompressing portion, and the heat absorber are built in the showcase,
a storage temperature zone of the refrigerant cycle apparatus for freezing or cold storage, wherein the storage temperature zone is suitable for temperatures of −20° C. to −25° C., 0° C. to +5° C., or +15° C. to +20° C.,
the refrigerant comprises trans-1,2-difluoroethylene (HFO-1132 (E)) and 2,3,3,3-tetrafluoropropene (HFO-1234yf) in such amounts that the sum of HFO-1132(E) and HFO-1234yf is 99.7 mass % or more, and
a content of HFO-1132(E) is 21.0 to 28.4 mass % and a content of HFO-1234yf is 79.0 to 71.6 mass %, based on a total mass of HFO-1132(E) and HFO-1234yf.