Heat transfer methods, systems and compositions
US-2019249055-A1 · Aug 15, 2019 · US
Working fluid composition for refrigerator, refrigerator oil and refrigerator
US12091606B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12091606-B2 |
| Application number | US-202017623424-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 17, 2020 |
| Priority date | Jul 5, 2019 |
| Publication date | Sep 17, 2024 |
| Grant date | Sep 17, 2024 |
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Abstract
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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.
First claim
Opening claim text (preview).
The invention claimed is: 1. A working fluid composition for a refrigerating machine, comprising: a refrigerant comprising trifluoroiodomethane, difluoromethane (R32) and pentafluoroethane (R125), wherein a ratio of (R32 and trifluoroiodomethane):R125 is 80 to 95:20 to 5; and a refrigerating machine oil comprising a polyol ester of pentaerythritol and a fatty acid having 4 to 9 carbon atoms, a hindered phenol compound comprising 2,6-di-tert-butyl-p-cresol, and an acid scavenger being at least one selected from the group consisting of a glycidyl ether epoxy compound represented by the following formula (1) and a glycidyl ester epoxy compound represented by the following formula (2): wherein R a represents an aryl group or an alkyl group having 5 to 18 carbon atoms, and R b represents an alkyl group having 5 to 18 carbon atoms, wherein a content of the polyol ester is 90% by mass or more, a content of the hindered phenol compound is 0.8 to 3% by mass, and a content of the acid scavenger is 0.7 to 3% by mass, based on a total amount of the refrigerating machine oil; and wherein the working fluid composition comprises no unsaturated hydrofluorocarbon refrigerant. 2. A refrigerating machine comprising: a refrigerant circulation system wherein in which a compressor, a condenser, an expansion mechanism, and an evaporator are connected by piping in this order; and the working fluid composition for a refrigerating machine according to claim 1 , filled in the refrigerant circulation system. 3. The working fluid composition according to claim 1 , wherein the refrigerant consists of the trifluoroiodomethane, the difluoromethane (R32), and the pentafluoroethane (R125). 4. The working fluid composition according to claim 1 , wherein the fatty acid comprises at least one of 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid. 5. The working fluid composition according to claim 1 , wherein the fatty acid comprises 2-ethylhexanoic acid and 3,5,5-trimethylhexanoic acid.
Assignees
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Classifications
Refrigerators lubricants {or compressors lubricants} · CPC title
Inhibition of oxidation, e.g. anti-oxidants · CPC title
Di- and triaryl amines · CPC title
used as base material · CPC title
monocarboxylic · CPC title
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- What does patent US12091606B2 cover?
- 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.
- Who is the assignee on this patent?
- Eneos Corp
- What technology area does this patent fall under?
- Primary CPC classification C10M169/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 17 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).