公开(公告)号：US20220325159A1

公开(公告)日：2022-10-13

申请号：US17621847

申请日：2020-06-17

Applicant: ENEOS Corporation

Inventor： Satoshi NAGAI ,  Tatsuki NAKAJIMA ,  Yuya MIZUTANI ,  Hidetoshi OGATA

IPC: C09K5/04 ,  C10M105/38 ,  C10M105/46

Abstract: A working fluid composition for a refrigerating machine, containing: a refrigerant containing trifluoroiodomethane; and a refrigerating machine oil containing a complex ester synthesized from a polyhydric alcohol, a polybasic acid, and at least one selected from a monohydric alcohol and a monocarboxylic fatty acid.

公开(公告)号：US20220267696A1

公开(公告)日：2022-08-25

申请号：US17628086

申请日：2020-07-17

Applicant: ENEOS Corporation

Inventor： Satoshi NAGAI ,  Tatsuki NAKAJIMA ,  Yuya MIZUTANI ,  Hidetoshi OGATA

IPC: C10M169/04 ,  F25B1/00 ,  C10M105/16 ,  C10M145/08 ,  C09K5/04

Abstract: A method for operating a refrigerant circulation system comprising a compressor, a condenser, an expansion mechanism, and an evaporator connected in this order with piping, wherein a refrigerant comprising trifluoroiodomethane is used as a refrigerant; a refrigerating machine oil comprising, as a base oil, a polyolester synthesized from a polyhydric alcohol and fatty acids, with a proportion of a fatty acid having 9 carbon atoms in the fatty acids being 65 mol % or less is used as a refrigerating machine oil; and a temperature of an entire area of the refrigerant circulation system is kept at 160° C. or lower.

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.

公开(公告)号：US20230135466A1

公开(公告)日：2023-05-04

申请号：US17915262

申请日：2021-03-12

Applicant: ENEOS CORPORATION

Inventor： Satoshi NAGAI ,  Tatsuki NAKAJIMA ,  Yuya MIZUTANI ,  Hidetoshi OGATA

IPC: C10M105/38 ,  C09K5/04

Abstract: An aspect of the present invention provides a refrigerating machine oil containing an ester-based base oil, at least one epoxy compound selected from an alkyl glycidyl ether and an aryl glycidyl ether, and a phenol-based antioxidant, wherein a content of the epoxy compound is 0.7% by mass or more based on a total amount of the refrigerating machine oil, and the refrigerating machine oil is used with a refrigerant containing trifluoroiodomethane.

公开(公告)号：US20220332996A1

公开(公告)日：2022-10-20

申请号：US17623424

申请日：2020-06-17

Applicant: ENEOS Corporation

Inventor： Satoshi NAGAI ,  Tatsuki NAKAJIMA ,  Yuya MIZUTANI ,  Hidetoshi OGATA

IPC: C09K5/04 ,  C10M107/32 ,  C10M129/10 ,  C10M129/18 ,  C10M129/40 ,  C10M169/04

Abstract: A working fluid composition for a refrigerating machine, containing: a refrigerant containing trifluoroiodometbane; and a refrigerating machine oil containing a polyol ester and a hindered phenol compound, wherein a content of the hindered phenol compound is 0.6 to 10% by mass based on a total amount of the refrigerating machine oil.

公开(公告)号：US20220251467A1

公开(公告)日：2022-08-11

申请号：US17629533

申请日：2020-07-17

Applicant: ENEOS Corporation

Inventor： Satoshi NAGAI

IPC: C10M169/04 ,  C10M129/16 ,  C10M129/70 ,  C10M129/10 ,  C09K5/04

Abstract: A refrigerating machine oil according to the present invention contains a lubricating base oil and alkylated hydroxyanisole, and a working fluid composition for a refrigerating machine according to the present invention contains the refrigerating machine oil and a refrigerant.