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
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Patent Information

Application Number
JP2023223195
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2022-12-28
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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Patent Text Reader

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

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