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Mixed refrigerant and refrigerating system

A mixed refrigerant and refrigeration system technology, which is applied in the direction of refrigerators, refrigeration and liquefaction, lighting and heating equipment, etc., can solve the problems of low and ultra-low temperature, and achieve the effect of improving the cooling effect, facilitating the condensing and separation cycle, and optimizing the cooling effect

Active Publication Date: 2022-02-18
冰山松洋生物科技(大连)有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 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 refrigerant and refrigerating system
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Examples

Experimental program
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Effect test

Embodiment 1-3 and comparative example 1

[0024] 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 I8, heat exchanger I inner tube 8a, heat exchanger I outer tube 8b, heat exchanger II9, heat exchanger II inner tube 9a, heat exchanger II outer tube 9b, heat exchanger III10, heat exchanger III Outer pipe 10a, heat exchanger III capillary tube 10b, evaporator 11, expansion tank 12, expansion tank capillary tube 13, fan 14.

[0025] The mixed refrigerant sealed in this refrigeration circuit is a n...

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Abstract

The invention relates to a mixed refrigerant and a refrigerating system. The mixed refrigerant comprises the following components: a non-azeotropic mixed refrigerant containing R245fa, R600, R404A, R23 / R116, R508A / R508B and R14, the mixed refrigerant is used in an auto-cascade refrigerating system, and the ultralow temperature in a large-volume refrigerator and a large-volume freezer cabinet can reach -90 DEG C or below.

Description

[0001] This application is a divisional application of the Chinese invention patent application with application number 201910880465.3 (application date: September 18, 2019; invention name: mixed refrigerant and refrigeration system). technical field [0002] The invention relates to the technical field of refrigeration systems, in particular to a mixed refrigerant and a refrigeration system. Background technique [0003] 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. [0004] 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/04F25B7/00
CPCF25B7/00C09K5/045
Inventor 苏嵋华刘发柱庞皓文徐桂杰
Owner 冰山松洋生物科技(大连)有限公司
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