| abstract |
In a refrigeration apparatus including a refrigerant circuit in which refrigerant represented by Molecular Formula 1: C 3 H m F n (note that "m" and "n" are integers equal to or greater than 1 and equal to or less than 5, and a relationship represented by an expression m + n = 6 is satisfied) and having a single double bond in a molecular structure, or refrigerant mixture containing the refrigerant is used, predetermined functional resin components (61, 62, 63, 64, 65) arranged so as to contact refrigerant of the refrigerant circuit (10) are made of any of polytetrafluoroethylene, polyphenylene sulfide, phenolic resin, polyamide resin, chloroprene rubber, silicone rubber, hydrogenated nitrile rubber, fluorine-containing rubber, and hydrin rubber. The refrigerant in the refrigerant circuit is a mixed refrigerant composed only of 2,3,3,3-tetrafluoro-1-propene and difluoromethane, wherein the ratio of 2,3,3,3-tetrafluoro-1-propylene in the mixed refrigerant is 70-94 mass%, and the proportion of difluoromethane is 6-30 mass%. |