A composition containing a refrigerant, its use, and a refrigerator having the same, and a method of operating the refrigerator.
By using a specific ratio of mixed refrigerant combinations of HFO-1132(E), HFC-152a, and HFO-1132a, the problem of high GWP of existing refrigerants was solved, and a refrigerant combination with low GWP and high refrigeration efficiency was achieved.
JP7877286B2Inactive Publication Date: 2026-06-22DAIKIN INDUSTRIES LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- DAIKIN INDUSTRIES LTD
- Filing Date
- 2023-12-28
- Publication Date
- 2026-06-22
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Technical Problem
Existing thermodynamic working fluids such as R410A have high global warming potential (GWP), necessitating the development of low-GWP alternatives.
Method used
A mixed refrigerant combination containing trans-1,2-difluoroethylene (HFO-1132(E), 1,1-difluoroethane (HFC-152a) and 1,1-difluoroethylene (HFO-1132a) was used. Its composition was determined by a specific mass percentage range and composition diagram to avoid disproportionation reactions and reduce GWP.
Benefits of technology
A low-GWP refrigerant combination was achieved, ensuring that no disproportionation reaction occurs under high pressure and high temperature conditions, while maintaining high cooling capacity.
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Smart Images
Figure 0007877286000038 
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Abstract
To provide a novel low-GWP mixed refrigerant.SOLUTION: The present invention provides a refrigerant-containing composition, where the refrigerant contains trans-1,2-difluoroethylene (HFO-1132(E)), 1,1-difluoroethane (HFC-152a) and 1,1-difluoroethylene (HFO-1132a).SELECTED DRAWING: None
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Citation Information
Patent Citations
JP2015229768A
JP2022507177A
WO2014178353A1
WO2015141678A1
WO2022075389A1