| 摘要 |
PROBLEM TO BE SOLVED: To obtain a compsn. for refrigeration cycle improved in sliding characteristics, reliability, and safeness by incorporating a refrigerator oil and a refrigerant contg. a fluorinated ether into the same. SOLUTION: A typical fluorinated ether is a hydrofluoro ether. Pref., the refrigerator oil has a viscosity of 2-100 cSt at 40 deg.C and 1-12 cSt at 100 deg.C) and is a mixed refrigerator oil contg. at least one oil selected from among polar refrigerator oils and nonpolar refrigerator oils. The polar refrigerator oil is the one compatible with the fluorinated ether and is pref. at least one oil selected from among ester oils, ether oils, fluorinated oils, and alkylene glycol oils. The nonpolar refrigeration oil is the one partially compatible with the fluorinated ether, is pref. at least one oil selected from among naphthenic mineral oils. paraffinic mineral oils, and alkylbenzene oils, and is compounded in an amt. of 10-50 wt.% into the mixed refrigerator oil. |
