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

Patent metadata

Field	Value
Publication number	US-12291665-B2
Application number	US-202117553103-A
Country	US
Kind code	B2
Filing date	Dec 16, 2021
Priority date	Jun 19, 2019
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

An object is to provide a novel low-GWP mixed refrigerant.
Provided as a means for a solution is a composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132(E)), difluoromethane (R32), 1,3,3,3-tetrafluoropropene (R1234ze), and carbon dioxide.

First claim

The invention claimed is:

1. A composition comprising a refrigerant, the refrigerant comprising trans-1,2-difluoroethylene (HFO-1132 (E)), difluoromethane (R32), 1,3,3,3-tetrafluoropropene (R1234ze), and carbon dioxide (CO 2 ).

2. The composition according to claim 1 ,
wherein
in the refrigerant, when the mass % of HFO-1132 (E), R32, R1234ze, and CO 2 based on their sum is respectively represented by x, y, z, and a,
(1) if 0<a≤0.4, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132 (E), R32, and R1234ze is (100−a) mass % are within the range of a figure surrounded by straight lines LL′, L′M, MN, NO, OK, KH, and HL that connect 7 points, i.e., points L, L′, M, N, O, K, and H, or on the straight lines LL′, L′M, MN, NO, OK, and KH (excluding the points L and H):

point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point O (−0.0095a+28.914, 0.0095a+51.586, −a+19.5),
point K (−2.5a+1.0, −0.25a+51.5, 1.75a+47.5), and
point H (0.1667a 2 −4.5667a+67.6, 0.0, −0.1667a 2 +3.5667a+32.4),
(2) if 0.4≤a≤7.5, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines LL′, L′M, MN, NO, OB″, B″K′, K′H, and HL that connect 8 points, i.e., points L, L′, M, N, O, B″, K′, and H, or on the straight lines LL′, L′M, MN, NO, OB″, and K′H (excluding the points L, B″, K′, and H), and

if 0.4≤a≤1.0, the 8 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point O (−0.0095a+28.914, 0.0095a+51.586, −a+19.5),
point B″ (0.0, 51.4, −a+48.6),
point K′ (0.0, −3.0a+52.6, 2.0a+47.4), and
point H (0.1667a 2 −4.5667a+67.6, 0.0, −0.1667a 2 +3.5667a+32.4),
if 1.0<a≤3.0, the 8 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+36.679, 0.0175a+36.679, −a+27.6),
point O (−0.0095a+28.914, 0.0095a+51.586, −a+19.5),
point B″ (0.0, 51.4, −a+48.6),
point K′ (0, −2.9a+52.5, 1.9a+47.5), and
point H (0.05a 2 −4.55a+67.7, 0.0, −0.05a 2 +3.55a+32.3),
if 3.0<a≤5.0, the 8 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point O (−0.0095a+28.914, 0.0095a+51.586, −a+19.5),
point B″ (0.0, 51.4, −a+48.6),
point K′ (0, −2.9a+52.5, 1.9a+47.5), and
point H (0.05a 2 −4.55a+67.7, 0.0, −0.05a 2 +3.55a+32.3), or
if 5.0<a≤7.5, the 8 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point O (−0.0095a+28.914, 0.0095a+51.586, −a+19.5),
point B″ (0.0, 51.4, −a+48.6),
point K′ (0, −2.8286a+52.105, 1.8286a+47.895), and
point H (0.02a 2 −4.21a+66.75, 0.0, −0.02a 2 +3.21a+33.25).

3. The composition according to claim 1 ,
wherein
in the refrigerant, when the mass % of HFO-1132 (E), R32, R1234ze, and CO 2 based on their sum is respectively represented by x, y, z, and a,
(1) if 0<a≤5.5, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132 (E), R32, and R1234ze is (100−a) mass % are within the range of a figure surrounded by straight lines LL′, L′M, MN, NJ, JH, and HL that connect 6 points, i.e., points L, L′, M, N, J, and H, or on the straight lines LL′, L′M, MN, NJ, and JH (excluding the points L and H), and

if 0<a≤1.0, the 6 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point J (−0.3333a 2 −3.3667a+20.3, 36.6, 0.3333a 2 +2.3667a+43), and
point H (0.1667a 2 −4.5667a+67.6, 0.0, −0.1667a 2 +3.5667a+32.4),
if 1.0<a≤3.0, the 6 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point J (0.05a 2 −3.95a+20.5, 0.05a 2 −0.25a+36.8, −0.1a 2 +3.2a+42.7), and
point H (0.05a 2 −4.55a+67.7, 0.0, −0.05a 2 +3.55a+32.3),
if 3.0<a≤5.0, the 6 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point J (0.05a 2 −4.05a+20.8, 36.5, −0.05a 2 +3.05a+42.7), and
point H (0.05a 2 −4.55a+67.7, 0.0, −0.05a 2 +3.55a+32.3), or
if 5.0<a≤5.5, the 6 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point J (−3.6a+19.8, 36.5, 2.6a+43.7), and
point H (0.02a 2 −4.21a+66.75, 0.0, −0.02a 2 +3.21a+33.25),
(2) if 5.5<a≤7.5, coordinates (x,y,z) in the ternary composition diagram are within the range of a figure surrounded by straight lines LL′, L′M, MN, NB′, B′K′, K′H, and HL that connect 7 points, i.e., points L, L′, M, N, B′, K′, and H, or on the straight lines LL′, L′M, MN, NB′, K′H, and HL (excluding the points L, B′, K′, and H):

point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point N (−0.0175a+35.721, 0.0175a+36.679, −a+27.6),
point B′ (0.0, 36.5, −a+63.5),
point K′ (0.0, −2.8286a+52.105, 1.8281a+47.895), and
point H (0.02a 2 −4.21a+66.75, 0.0, −0.02a 2 +3.21a+33.25).

4. The composition according to claim 1 ,
wherein
in the refrigerant, when the mass % of HFO-1132 (E), R32, R1234ze, and CO 2 based on their sum is respectively represented by x, y, z, and a, coordinates (x,y,z) in a ternary composition diagram in which the sum of HFO-1132 (E), R32, and R1234ze is (100−a) mass % are within the range of a figure surrounded by straight lines LL′, L′M, MI, IH, and HL that connect 5 points, i.e., points L, L′, M, I, and H, or on the straight lines LL′, L′M, MI, and IH (excluding the points L and H), and

if 0<a≤1.0, the 5 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point I (−0.1667a 2 −3.9333a+44.2, 18.1, 0.1667a 2 +2.9333a+37.7), and
point H (0.1667a 2 −4.5667a+67.6, 0.0, −0.1667a 2 +3.5667a+32.4),
if 1.0<a≤3.0, the 5 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point I (0.05a 2 −4.25a+44.3, 18.1, −0.05a 2 +3.25a+37.6), and
point H (0.05a 2 −4.55a+67.7, 0.0, −0.05a 2 +3.55a+32.3),
if 3.0<a≤5.0, the 5 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point I (−0.05a 2 −3.45a+42.8, 0.05a 2 −0.45a+19.0, 2.9a+38.2), and
point H (0.05a 2 −4.55a+67.7, 0.0, −0.05a 2 +3.55a+32.3), or
if 5.0<a≤7.5, the 5 points are the following:
point L (72.0, 0.0, −a+28.0),
point L′ (57.2, 10.0, −a+32.8),
point M (−0.019a+48.618, 0.019a+18.082, −a+33.3),
point I (0.1a 2 −4.85a+46.05, −0.02a 2 +0.21a+17.45, −0.08a 2 +3.64a+36.5), and
point H (0.02a 2 −4.21a+66.75, 0.0, −0.02a 2 +3.21a+33.25).

5. The composition according to claim 1 , wherein the refrigerant further comprises 2,3,3,3-tetrafluoro-1-propene (R1234yf).

6. The composition according to claim 5 ,
wherein
in the refrigerant, when the mass % of HFO-1132 (E) is x, the mass % of R32 is y, the mass % of the sum of R1234ze and R1234yf is z, and the mass % of CO 2 is a

Assignees

• Daikin Ind Ltd

Inventors

• Itano Mitsushi
• Ohkubo Shun
• Karube Daisuke

Classifications

• C09K2205/40

  Replacement mixtures · CPC title

• C09K2205/106

  Carbon dioxide · CPC title

• F25B9/006

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

• C09K2205/126

  Unsaturated fluorinated hydrocarbons · CPC title

• C09K2205/122

  Halogenated hydrocarbons · CPC title