A compressor refrigerant cycle system

Abstract

The utility model discloses a kind of compressor refrigerant circulation systems, including compressor, condenser, evaporator and throttling element, the outlet end of compressor is sequentially passed through condenser, throttling element, evaporator after pipeline returns the inlet of compressor and forms refrigeration cycle, the pipeline between condenser and throttling element is liquid supply pipeline, the pipeline between evaporator and compressor is back gas pipeline, liquid supply pipeline and back gas pipeline are fixed together along with axial brazing mode, form brazing section, brazing section outside is equipped with heat insulation pipe sleeve;The utility model forms regenerative structure by brazing liquid supply pipeline and back gas pipeline together, refrigerant in liquid supply pipeline and back gas pipeline exchanges heat, reduce heat loss by heat insulation pipe sleeve, improve heat exchange effect and heat exchange efficiency, improve the refrigerating capacity of compressor, optimize energy efficiency ratio, and simple structure does not occupy extra space, low in cost, can satisfy the dual needs of cost and function.

Description

Technical Field

[0001] This utility model relates to the field of compression refrigeration technology, and in particular to a compressor refrigerant circulation system. Background Technology

[0002] A compressor refrigerant cycle system is a precision thermodynamic system that uses a compressor to drive the refrigerant cycle, utilizing the phase change process of refrigerant absorbing heat and evaporating in the evaporator and releasing heat and condensing in the condenser to transfer heat from a low-temperature environment to a high-temperature environment.

[0003] In a compressor refrigeration cycle system, when the refrigerant leaves the evaporator, relying solely on the heat of the object being cooled is insufficient to achieve a significant superheat. A heat exchange structure facilitates heat exchange between the liquid refrigerant at the condenser outlet and the vapor refrigerant at the evaporator outlet, achieving refrigerant subcooling. This increases the cooling capacity of the refrigeration system without increasing compressor power, resulting in lower compressor power for the same cooling capacity and thus energy savings. Currently, commercially available heat exchange structures involve adding heat exchangers, but these are complex to manufacture, costly, and occupy considerable space in commercial freezers, failing to adequately meet the dual requirements of cost and functionality. Therefore, this application proposes a compressor refrigerant cycle system to address these issues. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a compressor refrigerant circulation system.

[0005] To solve the above-mentioned technical problems, this utility model includes a compressor, a condenser, an evaporator, and a throttling element. The outlet end of the compressor passes through the condenser, the throttling element, and the evaporator in sequence via a pipeline and then returns to the inlet of the compressor to form a refrigeration cycle. The pipeline between the condenser and the throttling element is a liquid supply pipeline, and the pipeline between the evaporator and the compressor is a gas return pipeline. The liquid supply pipeline and the gas return pipeline are fixed together along the axial direction by brazing to form a brazed section. A heat insulation sleeve is fitted on the outside of the brazed section.

[0006] Preferably, the brazing sections of the liquid supply pipeline and the gas return pipeline are made of two independently structured copper pipes.

[0007] Preferably, the brazed sections of the liquid supply pipeline and the gas return pipeline are both D-shaped and have the same dimensions, and the liquid supply pipeline and the gas return pipeline are planarly fitted.

[0008] Preferably, in the brazing section of the liquid supply pipeline and the return gas pipeline, the cross-section of the liquid supply pipeline is circular, and the return gas pipeline is provided with a concave arc groove along the axial direction. The diameter of the concave arc groove is the same as the outer diameter of the liquid supply pipeline. The liquid supply pipeline is placed in the concave arc groove and welded after the outer wall of the liquid supply pipeline is in contact with the concave arc groove.

[0009] Preferably, the heat insulation sleeve includes an inner tube and an outer tube, the inner tube is coaxially disposed inside the outer tube and a vacuum cavity is formed between the inner tube and the outer tube, and sealing rings are welded to both ends of the vacuum cavity.

[0010] Preferably, a spiral support strip is provided between the inner tube and the outer tube.

[0011] Preferably, the inner wall of the inner tube is coated with a heat radiation reflective layer.

[0012] Preferably, the inner tube of the heat insulation sleeve is located outside the brazing section and there is a space between them. Both ends of the heat insulation sleeve are provided with rubber sealing sleeves, which are in close contact with the brazing section and are fixedly connected to the heat insulation sleeve.

[0013] The beneficial effects of this utility model are as follows: This utility model forms a regenerative structure by brazing the liquid supply pipeline and the return gas pipeline together. The high-temperature and high-pressure refrigerant in the liquid supply pipeline exchanges heat with the low-temperature and low-pressure refrigerant in the return gas pipeline. The heat loss is reduced by the heat insulation sleeve, which improves the heat exchange effect and efficiency, increases the cooling capacity of the compressor, optimizes the energy efficiency ratio, and has a simple structure that does not occupy extra space and has low cost, thus meeting the dual requirements of cost and function. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the brazing section in this utility model;

[0016] Figure 3 This is a schematic cross-sectional view of the heat insulation sleeve in this utility model;

[0017] Figure 4 This is a schematic diagram of the inner tube structure of the heat insulation sleeve in this utility model;

[0018] Figure 5 This is a schematic diagram of a second welding method between the first copper tube and the second copper tube in this utility model;

[0019] Figure 6 This is a schematic diagram of a third welding method between the first copper tube and the second copper tube in this utility model;

[0020] Figure 7 In this utility model Figure 6 A schematic diagram of the second copper tube structure.

[0021] In the diagram: 1. Compressor; 2. Condenser; 3. Evaporator; 4. Throttling element; 5. Liquid supply line; 6. Gas return line; 7. Brazed section; 8. Insulation sleeve; 81. Inner tube; 82. Outer tube; 83. Vacuum chamber; 84. Sealing ring; 85. Spiral support strip; 86. Heat radiation reflective layer; 9. Rubber sealing sleeve; 10. First copper tube; 11. Second copper tube; 12. Concave arc groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. All directional indicators (such as up, down, left, right, front, back, etc.) in the present utility model are only used to explain the relative positional relationship and movement of each component in a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Example 1

[0024] like Figure 1-4 As shown, this embodiment provides a compressor refrigerant circulation system, including a compressor 1, a condenser 2, an evaporator 3, and a throttling element 4. The outlet end of the compressor 1 passes through the condenser 2, the throttling element 4, and the evaporator 3 in sequence via a pipeline and returns to the inlet of the compressor 1 to form a refrigeration cycle. The pipeline between the condenser 2 and the throttling element 4 is a liquid supply pipeline 5, and the pipeline between the evaporator 3 and the compressor 1 is a gas return pipeline 6. The liquid supply pipeline 5 and the gas return pipeline 6 are fixed together along the axial direction by brazing to form a brazed section 7. A heat insulation sleeve 8 is fitted on the outside of the brazed section 7.

[0025] In this embodiment, the brazing section 7 of the liquid supply pipeline 5 and the return gas pipeline 6 is made of two independent copper pipes. Specifically, the liquid supply pipeline 5 is provided with a first copper pipe 10, and the return gas pipeline 6 is provided with a second copper pipe 11. The first copper pipe 10 and the second copper pipe 11 are arranged side by side and brazed together. Both the first copper pipe 10 and the second copper pipe 11 are circular. A gap of 1-2 mm is left between the outer walls of the first copper pipe 10 and the second copper pipe 11. After adding solder to the gap, the first copper pipe 10 and the second copper pipe 11 are welded together, which increases the contact area between the first copper pipe 10 and the second copper pipe 11, thereby increasing the heat exchange area and thus increasing the heat exchange efficiency.

[0026] In this embodiment, the heat insulation sleeve 8 includes an inner tube 81 and an outer tube 82. The inner tube 81 is coaxially disposed inside the outer tube 82, and a vacuum cavity 83 is formed between the inner tube 81 and the outer tube 82. Sealing rings 84 are welded to both ends of the vacuum cavity 83. The vacuum cavity 83 reduces heat transfer efficiency, achieving a heat insulation effect. The heat insulation sleeve 8 is fitted outside the brazed section 7, so that the heat dissipated by the first copper tube 10 forms hot air inside the heat insulation sleeve 8, enveloping the second copper tube 11, increasing the contact area with the second copper tube 11, and thus improving the heat exchange effect. A spiral support strip 85 is provided between the inner tube 81 and the outer tube 82. The spiral support strip 85 is disposed inside the vacuum cavity 83 to support the outer tube 82 and prevent the outer tube 82 from deforming under vacuum conditions. At the same time, a heat radiation reflective layer 86 is coated on the inner wall of the inner tube 81. The heat radiation reflective layer 86 can be a reflective aluminum foil. The heat radiation reflective layer 86 can reflect heat, further reducing heat loss.

[0027] In this embodiment, the inner tube 81 of the heat insulation sleeve 8 is sleeved on the outside of the brazing section 7 and a space is left between them. Rubber sealing sleeves 9 are provided at both ends of the heat insulation sleeve 8. The rubber sealing sleeves 9 are tightly attached to the brazing section 7 and fixedly connected to the heat insulation sleeve 8. The two ends are sealed to prevent heat from flowing out from both ends. The space left between the brazing section 7 and the inner tube 81 can improve the air convection efficiency, thereby further improving the heat exchange efficiency.

[0028] Example 2

[0029] The difference between this embodiment and Embodiment 1 is that, as Figure 5 As shown, the brazed sections 7 of the liquid supply line 5 and the return gas line 6 are both D-shaped and have the same dimensions. The liquid supply line 5 and the return gas line 6 are in planar contact, that is, the first copper pipe 10 and the second copper pipe 11 are both D-shaped. The first copper pipe 10 and the second copper pipe 11 are welded together after their planar contact is made up. This can increase the contact area of ​​the two copper pipes, thereby improving the heat exchange efficiency.

[0030] Example 3

[0031] The difference between this embodiment and Embodiment 1 is that, as Figure 6-7 As shown, in the brazing section 7 of the liquid supply pipe 5 and the return gas pipe 6, the cross-section of the liquid supply pipe 5 is circular, and the return gas pipe 6 is provided with a concave arc groove 12 along the axial direction. The diameter of the concave arc groove 12 is the same as the outer diameter of the liquid supply pipe 5. The liquid supply pipe 5 is placed in the concave arc groove 12 and welded after the outer wall of the liquid supply pipe 5 is in contact with the concave arc groove 12. That is, the first copper pipe 10 is circular, and the second copper pipe 11 has a concave arc groove 12. The first copper pipe 10 and the second copper pipe 11 are placed in the concave arc groove 12, which can further increase the contact area of ​​the first copper pipe 10 and the second copper pipe 11, thereby improving the heat exchange efficiency. Moreover, the first copper pipe 10 contains a high temperature and high pressure refrigerant. The first copper pipe 10 is circular, which can improve the strength and avoid deformation.

[0032] Its working principle is as follows: by brazing the liquid supply line 5 and the return gas line 6 together to form a heat recovery structure, the high temperature and high pressure refrigerant in the liquid supply line 5 exchanges heat with the low temperature and low pressure refrigerant in the return gas line 6, and the heat loss is reduced by the heat insulation sleeve 8, thereby improving the heat exchange effect and efficiency, increasing the cooling capacity of the compressor 1, optimizing the energy efficiency ratio, and having a simple structure that does not occupy extra space and has low cost, it can meet the dual requirements of cost and function.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compressor refrigerant circulation system, comprising a compressor, a condenser, an evaporator, and a throttling element, wherein the outlet end of the compressor passes through the condenser, the throttling element, and the evaporator sequentially via a pipeline and returns to the inlet end of the compressor to form a refrigeration cycle, wherein the pipeline between the condenser and the throttling element is a liquid supply pipeline, and the pipeline between the evaporator and the compressor is a gas return pipeline, characterized in that, The liquid supply pipeline and the gas return pipeline are fixed together along the axial direction by brazing to form a brazed section, and a heat insulation sleeve is provided on the outside of the brazed section.

2. A compressor refrigerant cycle system as recited in claim 1 wherein, The brazing sections of the liquid supply pipeline and the gas return pipeline are welded using two independently structured copper pipes.

3. A compressor refrigerant cycle system as recited in claim 2 wherein, The brazed sections of the liquid supply pipeline and the gas return pipeline are both D-shaped and have the same dimensions, and the liquid supply pipeline and the gas return pipeline are in planar fit.

4. A compressor refrigerant cycle system as set forth in claim 2 wherein, The cross-section of the liquid supply pipeline is circular in the brazing section of the liquid supply pipeline and the gas return pipeline. The gas return pipeline is provided with a concave arc groove along the axial direction. The diameter of the concave arc groove is the same as the outer diameter of the liquid supply pipeline. The liquid supply pipeline is placed in the concave arc groove and welded after the outer wall of the liquid supply pipeline is in contact with the concave arc groove.

5. A compressor refrigerant cycle system as set forth in claim 1 wherein, The heat insulation sleeve includes an inner tube and an outer tube. The inner tube is coaxially disposed inside the outer tube, and a vacuum cavity is formed between the inner tube and the outer tube. Sealing rings are welded to both ends of the vacuum cavity.

6. A compressor refrigerant circulation system according to claim 5, characterized in that, A spiral support bar is provided between the inner tube and the outer tube.

7. A compressor refrigerant circulation system according to claim 5, characterized in that, The inner wall of the inner tube is coated with a heat radiation reflective layer.

8. A compressor refrigerant cycle system as set forth in claim 5 wherein, The inner tube of the heat insulation sleeve is located outside the brazing section and there is a space between them. Both ends of the heat insulation sleeve are provided with rubber sealing sleeves, which are in close contact with the brazing section and are fixedly connected to the heat insulation sleeve.

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