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US 10,976,079 B2Granted
Carbon dioxide refrigerant system
AssigneeEmerson Climate Technologies, Inc.
InventorsLouis Rebrovic, Kyaw Wynn
Life of this patent
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Abstract
A compressor including a refrigerant and a lubricant, wherein the lubricant comprises at least one compound selected from the group consisting of a mono-tertiary amine, a di-tertiary amine, a tri-tertiary amine, and a tetra-tertiary amine.
Claims17
A compressor including a refrigerant and a lubricant, wherein the lubricant comprises at least one compound selected from the group consisting of:
- wherein in each of the above formulae R′, R″, and R may be the same, or R′, R″, and R may be different, and each of R′, R″, and R are selected from the group consisting of a linear or branched C1 to C10 alkyl group, an unsaturated linear or branched C1 to C10 alkyl group, a C1 to C10 alkylene group, and an aromatic group;
- wherein in Formulae (5), (6), (8), and (12), a, b, and c are an integer in the range of 1 to 10;
- wherein in Formula (7), x is an integer in the range of 1 to 10;
- wherein Formula (11) represents a 1,a-(dialkylamino)benzene-type compound where “a” may be 2, 3, or 4;
- and
- wherein Formula (13) represents a 1-(dialkylamino)-a-alkyl benzene-type compound where “a” may be 2, 3, or 4.
3 more elements
A climate-control system comprising:
- a compressor compressing a carbon-dioxide refrigerant;
- an absorber disposed downstream of the compressor and receiving a mixture of the carbon dioxide refrigerant and a co-fluid;
- an expansion device in fluid communication with the absorber and disposed downstream of the absorber;
- and
- a desorber in fluid communication with the expansion device and disposed downstream of the expansion device,
- wherein the co-fluid is at least one compound selected from the group consisting of
- wherein in each of the above formulae R′, R″, and R may be the same, or R′, R″, and R may be different, and each of R′, R″, and R are selected from the group consisting of a linear or branched C1 to C10 alkyl group, an unsaturated linear or branched C1 to C10 alkyl group, a C1 to C10 alkylene group, and an aromatic group;
- wherein in Formulae (5), (6), (8), and (12), a, b, and c are an integer in the range of 1 to 10;
- wherein in Formula (7), x is an integer in the range of 1 to 10;
- wherein Formula (11) represents a 1,a-(dialkylamino)benzene-type compound where “a” may be 2, 3, or 4;
- and
- wherein Formula (13) represents a 1-(dialkylamino)-a-alkyl benzene-type compound where “a” may be 2, 3, or 4.
9 more elements
Dependencies are inferred from the claim text.