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Anti-freezing ultralow-temperature refrigerating system and using method thereof

An ultra-low temperature refrigeration and anti-freezing technology, which is applied in the direction of refrigerators, refrigeration components, refrigeration and liquefaction, etc., can solve the problems of hidden safety hazards in the box, current leakage of heating wires, cracking, brittle and hard aging, etc., to achieve effective heat exchange avoidance, Structure optimization, avoiding the effect of precipitation and solidification

Active Publication Date: 2018-05-15
ZHONGKE MEILING CRYOGENICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this solution will cause additional energy consumption for long-term heating of the heating wire; at the same time, the temperature of the capillary tube is always at a low temperature during the second-stage cooling, and the silicone heating wire wrapped on it is easy to cause cracking, brittleness and aging, and the current of the heating wire leaks to the refrigeration system metal pipes, causing the box to be electrified and causing safety hazards

Method used

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  • Anti-freezing ultralow-temperature refrigerating system and using method thereof
  • Anti-freezing ultralow-temperature refrigerating system and using method thereof
  • Anti-freezing ultralow-temperature refrigerating system and using method thereof

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Embodiment 1

[0033] Such as figure 1 as shown, figure 1 It is a structural schematic diagram of Embodiment 1 of the anti-freezing ultra-low temperature refrigeration system of the present invention. The refrigeration system includes a first refrigeration assembly 1 and a second refrigeration assembly 2. Both the first refrigeration assembly 1 and the second refrigeration assembly 2 include compression machine 11, condenser 12, evaporator 13, and capillary tube 14, the first refrigeration assembly 1 and the second refrigeration assembly 2 respectively connect the compressor 11, the condenser 12, and the evaporation The device 13 is connected with the capillary 14 to form an independent refrigeration cycle.

[0034] The evaporator 13 of the first refrigeration assembly 1 and the condenser 12 of the second refrigeration assembly 2 are arranged correspondingly, so as to ensure that the evaporator 13 of the first refrigeration assembly 1 can cool the second refrigeration assembly 1 The conden...

Embodiment 2

[0040] Such as figure 2 as shown, figure 2 It is a structural schematic diagram of Embodiment 2 of the anti-freezing ultra-low temperature refrigeration system of the present invention. Embodiment 2 is further improved on the basis of Embodiment 1. The improvement is that the heat exchange section 34 and the circulation pipes 33 at both ends Connected at a certain angle, the heat exchange section 34 is provided with a blocking assembly.

[0041] Such as image 3 as shown, image 3 It is a partial structural schematic diagram of the second embodiment of the heating assembly; the blocking assembly includes a transformer tube 35, a brake part 36 and a plug body 37, and the transformer tube 35 and the heat exchange section 34 are arranged coaxially, And the pressure transformation tube 35 is consistent with the inner diameter of the heat exchange section 34; one end of the pressure transformation tube 35 communicates with the heat exchange section 34 and the circulation pipe ...

Embodiment 3

[0046] Such as Figure 4 as shown, Figure 4 It is a partial structural schematic diagram of the third embodiment of the heating assembly; in the third embodiment, the heat exchange section 34 in the second embodiment is set in a spiral shape, and the heat exchange section 34 is spirally wound on the second refrigeration assembly 2 On the outer wall of the capillary 14, it is convenient for the heat exchange of the capillary 14 by the heat exchange section 34. The plug body 37 is set as a flexible material to ensure that when the plug body 37 enters the heat exchange section 34, the plug body 37 can deform and move along the extension track of the heat exchange section 34, realizing the plug body 37 Evacuation of the refrigerant medium in the heat exchange section 34 .

[0047] Since the length of the capillary 14 in the refrigerating cycle of the existing refrigerator is generally set at 0.5 to 3 m, the heat exchange section 34 cannot be in contact with the capillary 14 as ...

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Abstract

The invention discloses an anti-freezing ultralow-temperature refrigerating system and a using method thereof. The anti-freezing ultralow-temperature refrigerating system comprises a first refrigeration assembly and a second refrigeration assembly, the first refrigeration assembly and the second refrigeration assembly each comprise a compressor, a condenser, an evaporator and a capillary tube, andthe evaporator of the first refrigeration assembly and the condenser of the second refrigeration assembly are correspondingly arranged; and the anti-freezing ultralow-temperature refrigerating systemfurther comprises a heating assembly arranged on the first refrigeration assembly. By means of the anti-freezing ultralow-temperature refrigerating system and the using method, the first refrigeration assembly is communicated with the heating assembly to preheat the capillary tube of the second refrigeration assembly, and blockage caused by precipitation and solidification of lubricating oil in the capillary tubes at the lower temperature is avoided.

Description

technical field [0001] The invention relates to the field of refrigeration equipment, in particular to an anti-freeze ultra-low temperature refrigeration system and a use method thereof. Background technique [0002] Refrigerators whose refrigeration temperature reaches -40°C mostly adopt double-stage cascade or multi-stage cascade refrigeration methods. The two-stage refrigeration system realizes the evaporation temperature of -80°C or lower in the second or more stages without overpressure. [0003] There are three types of lubricants for all compressors today: fatty oils, mineral oils, and alkylbenzene oils. Below -40°C, it will precipitate and solidify, which will cause the capillary of the system after the second stage to be blocked, making the refrigerator invalid. [0004] Therefore, most of the existing multi-stage cascade ultra-low temperature refrigerators wind a silica gel heating wire on the second-stage capillary. The system is smooth. [0005] However, this...

Claims

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Application Information

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IPC IPC(8): F25B1/00F25B41/06F25B41/37
CPCF25B1/00F25B2400/06F25B2400/01F25B41/37
Inventor 胡效宗曲耀辉
Owner ZHONGKE MEILING CRYOGENICS CO LTD
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