公开(公告)号：US20240018437A1

公开(公告)日：2024-01-18

申请号：US18038540

申请日：2021-11-26

Applicant: ENEOS Corporation

Inventor： Yuya MIZUTANI ,  Kentaro YAMAGUCHI ,  Motoya OKAZAKI ,  Hidetoshi OGATA

IPC: C10M105/46 ,  F25B43/02 ,  F25B1/00 ,  C10M105/38 ,  C10M105/40 ,  C09K5/04

CPC classification number: C10M105/46 ,  F25B43/02 ,  F25B1/00 ,  C10M105/38 ,  C10M105/40 ,  C09K5/042 ,  C10M2207/2835 ,  C10M2207/2895 ,  C10M2207/3045 ,  C10N2040/30

Abstract: A working fluid filled in a refrigerant circulation system comprising a compressor, a condenser, an expansion mechanism, an evaporator, and an accumulator, the working fluid comprising: a refrigerant; and a refrigerating machine oil, wherein the refrigerant comprises a hydrocarbon refrigerant having 2 to 4 carbon atoms, the refrigerating machine oil has a mixed aniline point of 20° C. or higher and 50° C. or lower and a viscosity index of 110 or more, an amount of the refrigerant dissolved in the working fluid is 40% by mass or less under conditions of a temperature of 80° C. and an absolute pressure of 2.8 MPa, and the refrigerating machine oil has a kinematic viscosity at −10° C. of 200 mm2/s or more and 3000 mm2/s or less.

公开(公告)号：US20210009884A1

公开(公告)日：2021-01-14

申请号：US16981388

申请日：2019-04-02

Applicant: ENEOS Corporation

Inventor： Kentaro YAMAGUCHI ,  Yuya MIZUTANI ,  Satoshi NAGAI ,  Hidetoshi OGATA

IPC: C09K5/04 ,  C10M171/00 ,  F25B1/00

Abstract: One aspect of the present invention is a refrigerating machine including a refrigerant circulation system including a compressor, a condenser, an expansion mechanism, and an evaporator, and the refrigerant circulation system being filled with a refrigerant and a refrigerating machine oil, wherein the refrigerating machine oil contains: a first base oil having a compatible region with the refrigerant in a range of a temperature of 30° C. or lower and an oil ratio of 1 to 80% by mass; and a second base oil having a kinematic viscosity at 40° C. lower than the first base oil and having a narrower compatible region with the refrigerant than the first base oil.