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AssigneeHitachi, Ltd.
InventorsTadashi Iizuka, Reishi Naka, Katsumi Fukuda, Makoto Tanaka, Yoshiharu Homma, Hiroaki Hata, Hirokatsu Kousokabe, Koji Nariyoshi, Hiroshi Iwata
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A refrigerating apparatus comprising a refrigeration cycle comprising at least a compressor, a condenser, a dryer, an expansion mechanism and an evaporator, a refrigerant composed mainly of a fluorocarbon type refrigerant containing no chlorine and having a critical temperature of 40° C. or higher, and a refrigerating machine oil comprising as base oil an ester oil of one or more fatty acids which contains at least two ester linkages in the molecule and has a viscosity at 40° C. of 2 to 70 cSt and a viscosity at 100° C. of 1 to 9 cSt.
A refrigeration cycle comprising at least a compressor, a condenser, an expansion mechanism, and an evaporator, a refrigerant in said cycle composed of a hydrofluorocarbon refrigerant containing no chlorine atoms and having a critical temperature of 40° C. or higher, and a refrigerating machine oil comprising as base oil a hindered ester oil of one or more fatty acids wherein the ester oil contains at least two ester linkages
A refrigeration cycle comprising at least a compressor, a condenser, an expansion mechanism, and an evaporator, a refrigerant in said cycle composed of a hydrofluorocarbon refrigerant containing no chlorine atoms and having a critical temperature or 40° C. or higher, and a refrigerating machine oil comprising as base oil a hindered ester oil of one or more fatty acids wherein the ester oil contains at least two ester linkages
Dependencies are inferred from the claim text.