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Mixed refrigerants and refrigeration systems

A technology for mixing refrigerants and refrigeration systems, which is used in refrigerators, refrigeration and liquefaction, compressors with cascade operation, etc. The effect of split loops

Active Publication Date: 2021-12-07
冰山松洋生物科技(大连)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are some ratios and applications of non-azeotropic mixed refrigerants, such as the non-azeotropic mixed refrigerants sealed with R245fa, R600, R23 or R508A or R508B or R116, R14 in the refrigeration system, and the weight ratio range of the refrigerants is Specifically, the total weight of R245fa and R600 accounts for 40% to 80%; the weight of R23 or R508A or R508B or R116 accounts for 15% to 47%; the weight of R14 accounts for 3% to 20%, but the zeotropic mixture under this composition ratio The refrigerant can only make the temperature in the refrigeration system storehouse reach an ultra-low temperature of about -85°C, and it is difficult to achieve a lower ultra-low temperature under a suitable condensing pressure

Method used

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  • Mixed refrigerants and refrigeration systems
  • Mixed refrigerants and refrigeration systems

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3 and comparative example 1

[0023] In Examples 1-3 and Comparative Example 1, an 800L upright refrigerator is used as the experimental object. This refrigerator has two sets of independent self-cascading refrigeration systems, and each system is filled with the same weight of mixed refrigerant. Each self-cascading refrigeration system adopts the same design, as figure 1 As shown, it includes the following structures: compressor 1, condenser combination 2, auxiliary condenser 2a, condenser 2b, frame tube 3, compressor oil cooling tube 4, dry filter 5, flow divider 6, capillary tube 7, replacement Heat exchanger I 8, heat exchanger I inner tube 8a, heat exchanger I outer tube 8b, heat exchanger II 9, heat exchanger II inner tube 9a, heat exchanger II outer tube 9b, heat exchanger III10, heat exchanger Outer tube 10a of device III, capillary tube 10b of heat exchanger III, evaporator 11, expansion tank 12, capillary tube 13 of expansion tank, fan 14.

[0024] The mixed refrigerant sealed in this refrigerat...

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Abstract

A mixed refrigerant and a refrigeration system, the mixed refrigerant includes the following composition: a zeotropic mixed refrigerant containing R245fa, R600, R404A, R23 / R116, R508A / R508B, R14, which is used in a self-cascading refrigeration system Use, can make its large-capacity refrigerators and freezers reach ultra-low temperatures below -90°C.

Description

technical field [0001] The invention relates to the technical field of refrigeration systems, in particular to a mixed refrigerant and a refrigeration system. Background technique [0002] Self-cascade refrigeration system, also known as natural cascade refrigeration system, is a way to achieve cooling in the temperature range of -40°C to -150°C. The characteristics of different boiling points of different components in the substance make the refrigerant naturally separate and achieve the effect of cascade refrigeration. [0003] At present, there are some ratios and applications of non-azeotropic mixed refrigerants, such as the non-azeotropic mixed refrigerants sealed with R245fa, R600, R23 or R508A or R508B or R116, R14 in the refrigeration system, and the weight ratio range of the refrigerants is Specifically, the total weight of R245fa and R600 accounts for 40% to 80%; the weight of R23 or R508A or R508B or R116 accounts for 15% to 47%; the weight of R14 accounts for 3%...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/04F25B7/00
CPCF25B7/00C09K5/045
Inventor 刘发柱许仁续徐桂杰苏嵋华庞皓文
Owner 冰山松洋生物科技(大连)有限公司
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