Working fluid for heat cycle, composition for heat cycle system, and heat cycle system
US-2017002245-A1 · Jan 5, 2017 · US
Refrigerant cycle apparatus
US11912922B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11912922-B2 |
| Application number | US-201917260762-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 16, 2019 |
| Priority date | Jul 17, 2018 |
| Publication date | Feb 27, 2024 |
| Grant date | Feb 27, 2024 |
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- Title
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Abstract
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A showcase includes a refrigerant circuit and a refrigerant enclosed in the refrigerant circuit. The refrigerant circuit includes a compressor ( 121 ), a radiator ( 122 ), an expansion valve ( 123 ), and an evaporator ( 124 ). The refrigerant is a low-GWP refrigerant.
First claim
Opening claim text (preview).
The invention claimed is: 1. A refrigerant cycle apparatus for freezing or cold storage comprising: a showcase, a refrigerant circuit including a compressor, a radiator, a decompressing portion, and a heat absorber; and a refrigerant enclosed in the refrigerant circuit, wherein the compressor, the radiator, the decompressing portion, and the heat absorber are built in the showcase, a storage temperature zone of the refrigerant cycle apparatus for freezing or cold storage, wherein the storage temperature zone is suitable for temperatures of −20° C. to −25° C., 0° C. to +5° C., or +15° C. to +20° C., the refrigerant comprises trans-1,2-difluoroethylene (HFO-1132 (E)) and 2,3,3,3-tetrafluoropropene (HFO-1234yf) in such amounts that the sum of HFO-1132(E) and HFO-1234yf is 99.7 mass % or more, and a content of HFO-1132(E) is 21.0 to 28.4 mass % and a content of HFO-1234yf is 79.0 to 71.6 mass %, based on a total mass of HFO-1132(E) and HFO-1234yf. 2. The refrigeration cycle apparatus for freezing or cold storage according to claim 1 , wherein the refrigerant consists only of HFO-1132(E) and HFO-1234yf. 3. A refrigerant cycle apparatus for freezing or cold storage comprising: a showcase, a refrigerant circuit including a compressor, a radiator, a decompressing portion, and a heat absorber; and a refrigerant enclosed in the refrigerant circuit, wherein the compressor, the radiator, the decompressing portion, and the heat absorber are built in the showcase, a storage temperature zone of the refrigerant cycle apparatus for freezing or cold storage, wherein the storage temperature zone is suitable for temperatures of −20° C. to −25° C., 0° C. to +5° C., or +15° C. to +20° C., the refrigerant comprises trans-1,2-difluoroethylene (HFO-1132 (E)) and 2,3,3,3-tetrafluoropropene (HFO-1234yf) in such amounts that the sum of HFO-1132(E) and HFO-1234yf is 99.7 mass % or more, and a content of HFO-1132(E) is 12.1 to 72.0 mass % and a content of HFO-1234yf is 87.9 to 28.0 mass %, based on a total mass of HFO-1132(E) and HFO-1234yf.
Assignees
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Classifications
the refrigerant containing more than one component (F25B9/004 takes precedence) · CPC title
The mixture being azeotropic · CPC title
All components of a mixture being fluoro compounds · CPC title
Unsaturated fluorinated hydrocarbons · CPC title
- C09K5/045Primary
containing only fluorine as halogen · CPC title
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Frequently asked questions
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- What does patent US11912922B2 cover?
- A showcase includes a refrigerant circuit and a refrigerant enclosed in the refrigerant circuit. The refrigerant circuit includes a compressor ( 121 ), a radiator ( 122 ), an expansion valve ( 123 ), and an evaporator ( 124 ). The refrigerant is a low-GWP refrigerant.
- Who is the assignee on this patent?
- Daikin Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification C09K5/045. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 27 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 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).