Composition containing refrigerant, use of same, freezer having same, and method for operating said freezer

Patent metadata

Field	Value
Publication number	US-12180408-B2
Application number	US-202117549392-A
Country	US
Kind code	B2
Filing date	Dec 13, 2021
Priority date	Jun 19, 2019
Publication date	Dec 31, 2024
Grant date	Dec 31, 2024

Abstract

An object of the present disclosure is to provide a novel low-GWP mixed refrigerant. To solve this problem, the present disclosure provides a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32).

First claim

The invention claimed is:

1. A composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32), wherein
when the mass % of HFO-1132 (E), HFO-1123, R1234ze, and R32 based on their sum in the refrigerant is respectively represented by x, y, z, and a,
if 0<a≤11.1, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132 (E), HFO-1123, and R1234ze is (100−a) mass % are within the range of a figure surrounded by straight lines GG′, G′B, BD, DC, and CG that connect the following 5 points:
point G (0.0314a 2 −1.8079a+72.0, 100−a−x, 0.0),
point G′ (0.0314a 2 −1.8079a+72.0, −0.0199a 2 +0.0677a+3.8, 100−a−x−y),
point B (0.0, 0.0057a 2 −1.4197a+68.462, 100−a−y),
point D (0.0, 0.0234a 2 +0.0647a+86.3, 100−a−y), and
point C (−0.189a 2 −0.8664a+32.9, 100−a−x, 0.0),
or on the straight lines GG′, G′B, and DC (excluding point B, point D, point C, and point G);
if 11.1<a≤16.4, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GG′, G′B, BO, and OG that connect the following 4 points:

point G (0.015a 2 −1.4701a+70.266, 100−a−x, 0.0),
point G′ (−1.0566a+67.528, −0.3962a+6.4981, 100−a−x−y),
point B (0.0, 0.0057a 2 −1.4197a+68.462, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GG′ and G′B (excluding point B, point O, and point G);
if 16.4<a≤26.6, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IA, AB, BO, and OG that connect the following 5 points:

point G (0.015a 2 −1.4701a+70.266, 100−a−x, 0.0),
point I (0.015a 2 −1.4701a+70.266, 0.0, 100−a−x),
point A (0.0076a 2 −1.7a+76.031, 0.0, 100−a−x),
point B (0.0, 0.0057a 2 −1.4197a+68.462, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI and AB (excluding point G, point I, point A, and point B);
if 26.6<a≤43.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IA, AB, BO, and OG that connect the following 5 points:

point G (0.00738a 2 −1.0762a+65.22, 100−a−x, 0.0),
point I (0.00738a 2 −1.0762a+65.22, 0.0, 100−a−x),
point A (0.00582a 2 −1.5915a+74.4, 0.0, 100−a−x),
point B (0.0, 0.00328a 2 −1.3169a+67.421, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI and AB (excluding point G, point I, point A, and point B); and
if 43.8<a≤47.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IA, AB, BO, and OG that connect the following 5 points:

point G (−0.45a+51.91, 100−a−x, 0.0),
point I (−0.45a+51.91, 0.0, 100−a−x),
point A (−1.075a+62.985, 0.0, 100−a−x),
point B (0.0, −1.025a+60.895, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines GI and AB (excluding point G, point I, point A, and point B).

2. A composition comprising a refrigerant,
the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), and difluoromethane (R32), wherein
when the mass % of HFO-1132 (E), HFO-1123, R1234ze, and R32 based on their sum in the refrigerant is respectively represented by x, y, z, and a,
if 0<a≤11.1, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132 (E), HFO-1123, and R1234ze is (100−a) mass % are within the range of a figure surrounded by straight lines JQ, QN, NM, MK, KB, BD, DC, and CJ that connect the following 8 points:
point J (100−a−y, 0.0072a 2 −0.1704a+52.9, 0.0),
point Q (0.0112a 2 −1.3048a+62.1, 96.5−a−x, 3.5),
point N (0.0207a 2 −1.5817a+65.9, −0.0547a 2 +1.1392a+21.6, 100−a−x−y),
point M (0.0278a 2 −1.7325a+64.5, 80.0−a−x, 20.0),
point K (0.0421a 2 −2.2419a+62.5, 100−a−x−z, −0.0132a 2 +0.768a+25.1),
point B (0.0, 0.0057a 2 −1.4197a+68.462, 100−a−y),
point D (0.0, 0.0234a 2 +0.0647a+86.3, 100−a−y), and
point C (−0.189a 2 −0.8664a+32.9, 100−a−x, 0.0),
or on the straight lines JQ, QN, NM, MK, and KB (excluding point J and point B);
if 11.1<a≤26.6, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JQ, QN, NM, MK, KB, BO, and OJ that connect the following 7 points:

point J (100−a−y, −0.0285a 2 +0.5371a+49.443, 0.0),
point Q (0.0166a 2 −1.382a+62.291, 96.5−a−x, 3.5),
point N (0.0183a 2 −1.5044a+65.339, −0.0395a 2 +1.4643a+16.116, 100−a−x−y),
point M (0.0145a 2 −1.4001a+62.448, 80.0−a−x, 20.0),
point K (0.0184a 2 −1.7325a+59.763, 100−a−x−z, −0.009a 2 +0.6996a+25.34),
point B (0.0, 0.0057a 2 −1.4197a+68.462, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JQ, QN, NM, MK, and KB (excluding point J and point B);
if 26.6<a≤43.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JQ, QN, NM, MK, KB, BO, and OJ that connect the following 7 points:

point J (100−a−y, 0.00542a 2 −1.3598a+75.92, 0.0),
point Q (0.0049a 2 −0.728a+53.204, 96.5−a−x, 3.5),
point N (0.0075a 2 −0.971a+58.81, −0.0038a 2 −0.0303a+30.581, 100−a−x−y),
point M (0.0019a 2 −0.7375a+53.782, 80.0−a−x, 20.0),
point K (0.0086a 2 −1.2345a+53.442, 100−a−x−z, −0.0045a 2 +0.4752a+28.157),
point B (0.0, 0.00328a 2 −1.3169a+67.421, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines JQ, QN, NM, MK, and KB (excluding point J and point B); and
if 43.8<a≤47.8, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines JN, NM, MK, KA, AB, BO, and OJ that connect the following 7 points:

point J (100−a−y, −0.9a+66.22, 0.0),
point N (−0.425a+49.315, −0.3a+8.86, 100−a−x−y),
point M (−0.525a+48.095, 80.0−a−x, 20.0),
point K (15.9, 0.0, 84.1−a),
point A (−1.075a+62.985, 0.0, 100−a−x),
point B (0.0, −1.025a+60.895, 100−a−y), and
point O (0.0, 100−a, 0.0),
or on the straight lines NM, MK, KA, and AB (excluding point J and point B).

3. A composition comprising a refrigerant,
the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), trifluoroethylene (HFO-1123), 1,3,3,3-tetrafluoropropene (R1234ze), difluoromethane (R32), and 2,3,3,3-tetrafluoro-1-propene (R1234yf), wherein
when the mass % of HFO-1132 (E), HFO-1123, R1234yf, R1234ze, and R32 based on their sum in the refrigerant is respectively x, y, z 1 , 72, and a, the sum of z 1 and z 2 is z, z/z is r, and w=−0.00162a 2 −0.0097a+0.592,
if 0<a≤11.1, and 0<r≤w, coordinates (x,y,z) in a ternary composition diagram whose vertices are a point of (100−a) mass % of HFO-1132 (E), a point of (100−a) mass % of HFO-1123, and a point of (100−a) mass % of the sum of R1234yf and R1234ze are within the range of a figure surrounded by straight lines GG′ r , G′ r B r , B r D r , D r C, and CG that connect the following 5 points:
point G (0.0314a 2 −1.8079a+72.0, 100−a−x, 0.0),
point G′ r (0.0314a 2 −1.8079a+72.0, (−0.0708a 2 +0.9972a−4.8964) r 2 +(0.0424a 2 −0.7622a−3.5518) r+(−0.0199a 2 +0.0677a+3.8), 100−a−x−y),
point B r (0.0, −r 2 +(0.004a 2 −0.1343a−9.1) r+(0.008a 2 −1.4765a+68.8), 100−a−y),
point D r (0.0, (−0.0603a 2 +0.8857a−2.4) r 2 +(0.1143a 2 −0.9267a−3.8) r+(0.0079a 2 +0.1471a+86.3), 100−a−y), and
point C (−0.189a 2 −0.8664a+32.9, 100−a−x, 0.0),
or on the straight lines GG′ r , G′ r B r , and D r C (excluding point G, point B r , point D r , and point C);
if 0<a≤11.1, and w<r≤1, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines GI, IA r , A r B r , B r D r , D r C, and CG that connect the following 6 points:

point G (0.0314a 2 −1.8079a+72.0, 100−a−x, 0.0),
point I (0.0314a 2 −1.8079a+72.0, 0.0, 100−a−x),
po

Assignees

• Daikin Ind Ltd

Inventors

• Itano Mitsushi
• Ohkubo Shun
• Karube Daisuke

Classifications

• C09K2205/40

  Replacement mixtures · CPC title

• C09K2205/22

  All components of a mixture being fluoro compounds · CPC title

• F25B2400/12

  Inflammable refrigerants · CPC title

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• F25B9/006

  the refrigerant containing more than one component (F25B9/004 takes precedence) · CPC title