Patent ID: 11939515
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  F | IPC C  F

Claim 13:
14. A composition comprising a refrigerant, the refrigerant comprising difluoromethane (HFC-32), 2,3,3,3-tetrafluoropropene (HFO-1234yf), and at least one of 1,1-difluoroethylene (HFO-1132a) and tetrafluoroethylene (FO-1114), wherein the refrigerant comprises HFC-32, HFO-1234yf, and HFO-1132a, when the mass % of HFC-32, HFO-1132a, and HFO-1234yf based on their sum in the refrigerant is respectively represented by x, y, and z, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFC-32, HFO-1132a, and HFO-1234yf is 100 mass % are within the range of a figure surrounded by line segments QU, UV, and VQ that connect the following 3 points:
point Q (59.1, 12.7, 28.2),
point U (59.0, 5.5, 35.5), and
point V (52.5, 8.4, 39.1),
or on the line segments,
the line segment VQ is represented by coordinates

(y=0.0083x2−0.2719x−0.1953),
the line segment UV is represented by coordinates

(y=0.0026x2−0.7385x+39.946), and
the line segment QU is a straight line.