Connecting structure of refrigerant pipeline and box body, mounting method and environmental test box

Abstract

The invention belongs to the technical field of environmental simulation, and discloses a connecting structure of a refrigerant pipeline and a box body, a mounting method and an environmental test box. A box body of the connecting structure comprises an inner wall, a heat preservation layer and an outer wall which are sequentially connected, a refrigerant pipeline comprises a refrigerant pipe and a protection assembly, the refrigerant pipe penetrates through the box body and is connected with a heat exchange assembly in the box body and a refrigeration assembly outside the box body, and the protection assembly penetrates through the box body and wraps the refrigerant pipe. One end of the protection assembly is fixedly welded to one of the inner wall and the outer wall, and the other end of the protection assembly is fixedly glued to the other one of the inner wall and the outer wall. According to the installation method, the protection assembly is welded to the inner wall, then the heat preservation layer and the outer wall are installed in sequence, and after the refrigerant pipe and the refrigeration assembly are welded, the protection assembly and the outer wall are glued. The problems that gaps are easily generated due to vibration at the position where the refrigerant pipe penetrates through the box body, and a heat preservation layer loses heat preservation performance due to welding high temperature are solved, heat preservation layer failure, air leakage and moisture invasion are prevented, stable operation of the refrigerant pipe is guaranteed, and stability and accuracy of the temperature in the box body are maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental simulation, and in particular to a connection structure between a refrigerant pipeline and a box body, an installation method and an environmental test box. Background Art

[0002] Environmental test chambers are mainly used to simulate natural environmental conditions. By placing the samples to be tested in them and conducting relevant tests, the reliability, stability and other performance of the products in different environments can be evaluated. Among them, the temperature factor is crucial, so environmental test chambers are equipped with a refrigeration system to simulate the natural environment temperature. The refrigeration system usually consists of a refrigeration unit located outside the chamber and an evaporator inside the chamber. The two are connected by a refrigerant pipeline, and the refrigerant circulates in the pipeline to achieve heat transfer and refrigeration functions.

[0003] Currently, if Figure 4 As shown, the box wall of the environmental test box is generally composed of an inner wall 210, an insulation layer 220 and an outer wall 230 in sequence. In the prior art, a hole is usually punched in the box wall to allow the refrigerant pipe 110 to pass through, a fixing glue 120 is applied between the refrigerant pipe 110 and the hole wall near the inner side of the environmental test box, and an insulation sleeve 130 is covered on the part away from the inner side of the environmental test box. When the environmental test box is vibrated during transportation or operation, gaps often appear between the end of the insulation sleeve 130 and the fixing glue 120, as well as between the refrigerant pipe 110, the hole wall and the fixing glue 120. When the environmental test box is tested, especially when a humidity test is performed, the moisture in the environmental test box will enter between the refrigerant pipe 110 and the insulation layer 220 of the box wall through these gaps, and the moisture will frost and melt into water and penetrate the insulation layer 220, causing the insulation layer 220 to fail. In addition, when the original refrigerant pipeline is welded to the refrigeration unit and the evaporator, the high temperature will carbonize the insulation layer 220 and deform the fixing glue 120. This requires cutting off the carbonized insulation layer 220 and refilling it, which wastes materials and labor hours, increases costs, and causes the fixing glue 120 to deform and produce gaps that leak air, which easily allows moisture to enter the insulation layer 220 and lose its insulation effect. This will cause the temperature in the box to fluctuate, making it difficult to meet the test requirements, affecting the accuracy and reliability of the environmental test box simulating the natural environment temperature, and thus having a negative impact on the accuracy of the product test results. Summary of the invention

[0004] The first purpose of the present invention is to provide a connection structure between a refrigerant pipeline and a cabinet, so as to solve the problem that gaps are easily generated due to vibration at the place where the refrigerant pipe passes through the cabinet, and the high temperature during welding causes the insulation layer and related fixed structures to be easily deformed, prevent the insulation layer from failing, air leakage and moisture intrusion, ensure the stable operation of the refrigerant pipe, and maintain the stability and accuracy of the temperature environment inside the cabinet.

[0005] The second object of the present invention is to provide an installation method for the connection structure between a refrigerant pipeline and a cabinet, which not only avoids the generation of gaps due to vibration at the place where the refrigerant pipe passes through the cabinet, but also prevents high temperature from damaging the insulation layer and related fixed structures during the welding process of the refrigerant pipe and the refrigeration component and the heat exchange component, thereby reducing material loss, reducing maintenance hours, and ensuring the continuous effectiveness of the cabinet's thermal insulation performance, thereby improving the stability and reliability of the environmental test chamber.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] The connection structure between the refrigerant pipeline and the cabinet includes:

[0008] The box body comprises an inner wall, a heat-insulating layer and an outer wall, wherein the heat-insulating layer is located between the inner wall and the outer wall;

[0009] The refrigerant pipeline includes a refrigerant pipe and a protective component. The refrigerant pipe passes through the box body and is used to connect the heat exchange component inside the box body and the refrigeration component outside the box body. The protective component passes through the box body and covers the refrigerant pipe. One end of the protective component is sealed and welded to one of the inner wall and the outer wall, and the other end of the protective component is sealed and glued to the other of the inner wall and the outer wall.

[0010] Preferably, the length of the protective component is greater than the sum of the thicknesses of the inner wall, the insulation layer and the outer wall.

[0011] Preferably, one end of the protective component is arranged flush with the outer surface of the inner wall, and the other end of the protective component extends outward from the outer surface of the outer wall by 10-20 mm.

[0012] Preferably, the refrigerant pipe comprises a first covering section and a second covering section, the first covering section is covered with the protective component, and the second covering section is covered with an insulation sleeve.

[0013] Preferably, the protective component includes a sleeve and a filling layer, the sleeve is sleeved on the outer periphery of the refrigerant pipe and the gap between the two is filled with the filling layer, and the sleeve is sealed and fixedly connected to the inner wall and the outer wall.

[0014] Preferably, the sleeve is made of the same material as the outer wall or the inner wall.

[0015] Preferably, the material of the filling layer is sealing adhesive silicone rubber.

[0016] The environmental test box includes a heat exchange component and a refrigeration component. The heat exchange component is located inside the box, and the refrigeration component is located outside the box. It also includes a connection structure between the refrigerant pipeline and the box. At least two groups of the refrigerant pipelines pass through the box and are connected to the heat exchange component and the refrigeration component.

[0017] The installation method of the connection structure between the refrigerant pipeline and the box is used to install the connection structure between the refrigerant pipeline and the box, the protective component includes a sleeve and a filling layer, the sleeve is sleeved on the outer periphery of the refrigerant and the gap between the two is filled with the filling layer, and the installation method includes:

[0018] S1: The inner wall and the outer wall are provided with mounting holes, one end of the sleeve is flush with the inner wall, and is fully welded to the mounting hole of the inner wall;

[0019] S2: Connect one end of the refrigerant pipe to the heat exchange component, and pass the sleeve through the other end;

[0020] S3: sequentially installing the insulation layer and the outer wall outside the inner wall;

[0021] S4: welding the other end of the refrigerant pipe to the refrigeration component outside the box;

[0022] S5: sealing and fixing the sleeve and the refrigerant pipe with the filling layer;

[0023] S6: The other end of the protective component is glued and fixed to the outer wall.

[0024] Preferably, the method further includes S10 after S1 and before S2, wherein S10: applying sealing adhesive silicone rubber to the weld between the sleeve and the inner wall.

[0025] Beneficial effects:

[0026] The present invention provides a connection structure between a refrigerant pipeline and a box body, wherein the refrigerant pipeline is covered with a protective component and fixedly connected to the box wall of the box body. Since the protective component is located between the refrigerant pipe and the box wall of the box body, a gap can be prevented between the refrigerant pipe and the box wall during transportation or operation vibration, and internal or external air can be prevented from entering the insulation layer to cause the insulation layer to fail, thereby ensuring the temperature stability in the box, improving the accuracy and reliability of the simulated temperature of the environmental test box, and providing precise conditions for product testing. At the same time, since the protective component isolates the box body from direct contact with the refrigerant pipe, high temperature can be effectively prevented from being transmitted to the insulation layer during welding, thereby avoiding damage to the insulation layer.

[0027] The present invention also provides an installation method for the connection structure of a refrigerant pipeline and a box body. With the installation method of the refrigerant pipeline, one end of the protective component is first welded to the inner wall, and after the welding is completed, the insulation layer and the outer wall are installed in order to avoid damage to the insulation layer caused by high temperature during the welding process. At the same time, after the welding of the refrigerant pipe and the refrigeration component is completed, the protective component and the outer wall are glued and fixed to prevent the adverse effects of the welding high temperature on the adhesive. This installation sequence can reduce the degradation of material properties caused by high temperature, extend the service life of the insulation layer and the adhesive, and reduce the cost increase and time loss caused by material damage. At the same time, the protective component is located between the refrigerant pipe and the box wall, which can prevent the gap between the two during transportation or operation vibration, and prevent external air from entering the insulation layer to cause it to fail to ensure the temperature inside the box is stable. The tight connection structure between the protective component and the refrigerant pipe and the box wall can maintain the stability of the environmental test box structure, prevent the refrigerant pipe from deflecting and loosening the connection, ensure the stability of the refrigerant circulation, accurately control the temperature inside the box, help the environmental test box to operate stably for a long time, and improve the accuracy of product test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of a connection structure between a refrigerant pipeline and a box body provided in an embodiment of the present invention;

[0029] Figure 2 is a schematic diagram of the structure of an environmental test chamber provided by an embodiment of the present invention;

[0030] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0031] Figure 4 It is a schematic diagram of the connection structure between the refrigerant pipeline and the box body in the prior art.

[0032] In the figure:

[0033] 10. Environmental test chamber;

[0034] 1. refrigerant pipeline; 11. refrigerant pipe; 12. protection component; 111. first covering section; 112. second covering section; 121. casing; 122. filling layer;

[0035] 2. Box body; 21. Inner wall; 22. Insulation layer; 23. Outer wall;

[0036] 3. Heat exchange components;

[0037] 110, refrigerant pipe; 120, fixing glue; 130, insulation sleeve; 210, inner wall; 220, insulation layer; 230, outer wall. DETAILED DESCRIPTION

[0038] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0039] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0042] This embodiment provides a connection structure between a refrigerant pipeline and a box body, such as Figure 1-Figure 3As shown, the connection structure includes a box body 2 and a refrigerant pipeline 1, the box body 2 includes an inner wall 21, an insulation layer 22 and an outer wall 23, the insulation layer 22 is located between the inner wall 21 and the outer wall 23, the refrigerant pipeline 1 includes a refrigerant pipe 11 and a protective component 12, the refrigerant pipe 11 passes through the box body 2, and is used to connect the heat exchange component 3 inside the box body 2 and the refrigeration component outside the box body 2 (not shown in the figure), the protective component 12 covers the refrigerant pipe 11, and the protective component 12 passes through the box body 2 and is fixedly connected to the inner wall 21 and the outer wall 23. The refrigerant pipe 11 is covered with a protective component 12 and fixedly connected to the wall of the box body 2. Since the protective component 12 is located between the refrigerant pipe 11 and the wall of the box body 2, it can prevent the formation of gaps between the refrigerant pipe 11 and the wall of the box body 2 during transportation or operation vibration, and prevent internal moisture or external air from entering the insulation layer 22 to cause it to fail, thereby ensuring the temperature stability in the box; at the same time, since the protective component 12 isolates the box body 2 from direct contact with the refrigerant pipe 11, it can effectively prevent high temperature from being transmitted to the insulation layer 22 during welding, thereby avoiding damage to the insulation layer 22.

[0043] In this embodiment, if Figure 1 As shown, one end of the protective component 12 is welded and fixed to one of the inner wall 21 and the outer wall 23, and the other end of the protective component 12 is glued and fixed to the other of the inner wall 21 and the outer wall 23. Welding one end of the protective component 12 can ensure that it is firmly connected to the box body 2, withstand various stresses during transportation and operation without loosening, and provide a solid foundation for the stable operation of the refrigerant pipe 11. The other end is glued and fixed, which fully considers the requirements of the installation process. When the insulation layer 22 is installed after the welding of one end of the protective component 12 is completed, the other end of the protective component 12 is glued to avoid the high temperature generated by the re-welding from damaging the insulation layer 22, which not only ensures the stability of the connection, but also maintains the integrity and performance of the insulation layer 22. In this embodiment, one end of the protective component 12 is welded and fixed to the inner wall 21, and the other end of the protective component 12 is glued and fixed to the outer wall 23. In another optional embodiment, one end of the protective component 12 is welded and fixed to the outer wall 23, and the other end of the protective component 12 is glued and fixed to the inner wall 21.

[0044] Furthermore, when the protective component 12 is welded to the inner wall 21 or the outer wall 23, the contact surfaces of the two are welded in a full circle, which enhances the strength and sealing of the connection parts, and prevents the connection from loosening or gaps due to local uneven force during long-term use. At the same time, good sealing can further prevent internal moisture or external air, dust and other impurities from invading the internal insulation layer 22 of the box body 2 from the welding point, ensuring the dryness and stable performance of the insulation layer 22, thereby continuously maintaining precise control of the temperature environment inside the box body 2.

[0045] In this embodiment, if Figure 1As shown, the length of the protective component 12 is greater than the sum of the thicknesses of the inner wall 21, the insulation layer 22 and the outer wall 23. The longer protective component 12 can form a more comprehensive covering and protective structure at the connection between the refrigerant pipe 11 and the box body 2. In the case of transportation or operation vibration, it can provide sufficient buffer space and restraining force to effectively limit the shaking amplitude of the refrigerant pipe 11, and further reduce the possibility of collision or gap between the refrigerant pipe 11 and the box wall, thereby ensuring that the insulation layer 22 is always in a closed and stable environment, maintaining its good insulation performance, and ensuring the temperature stability in the box.

[0046] Specifically, in this embodiment, Figure 1 As shown, one end of the protective component 12 is flush with the outer surface of the inner wall 21, and the other end of the protective component 12 extends 10-20 mm beyond the outer surface of the outer wall 23. This extended portion allows the operating space to be expanded during gluing and fixing, which is conducive to the uniform and sufficient application and curing of the adhesive, effectively improving the quality and stability of the adhesive connection, and will not interfere with the distance layout between the refrigeration component and the box body 2, ensuring the rationality and coordination of the overall structural layout.

[0047] In this embodiment, if Figure 1 As shown, the refrigerant pipe 11 includes a first coating section 111 and a second coating section 112. The first coating section 111 is coated with a protective component 12, and the second coating section 112 is coated with an insulation sleeve (not shown). The second coating section 112 refers to the portion of the refrigerant pipe 11 that extends outside the box 2 and is not coated by the protective component 12. The second coating section 112 is coated with an insulation sleeve, which prevents part of the refrigerant pipe 11 outside the box 2 from being exposed in the area not protected by the protective component 12, reduces the heat exchange between the refrigerant and the external environment, reduces the unwarranted heat dissipation, and enables the refrigerant to maintain a relatively constant temperature level throughout the entire transmission process, thereby ensuring the stable operation of the refrigerant system.

[0048] In this embodiment, if Figure 1 As shown, the protective assembly 12 includes a sleeve 121 and a filling layer 122. The sleeve 121 is sleeved on the outer periphery of the refrigerant pipe 11 and the gap between the two is filled with the filling layer 122. One end of the sleeve 121 is welded and fixed to the inner wall 21, and the other end of the sleeve 121 is glued and fixed to the outer wall 23. The filling layer 122 can play a dual role of buffering and heat insulation, and can absorb the impact force caused by vibration, etc. The heat insulation reduces the heat transfer between the refrigerant pipe 11 and the sleeve 121, and improves the overall thermal insulation performance.

[0049] Specifically, Figure 1As shown, the inner diameter of the sleeve 121 is larger than the outer diameter of the refrigerant tube 11, the refrigerant tube 11 passes through the sleeve 121 and has no direct contact with the sleeve 121, and the filling layer 122 fills the gap between the sleeve 121 and the refrigerant tube 11, and can be tightly attached to the surfaces of the refrigerant tube 11 and the sleeve 121, thereby effectively filling the gap between the two and ensuring that there will be no loosening or falling off under various working conditions.

[0050] In this embodiment, the sleeve 121 is made of the same material as the outer wall 23 or the inner wall 21. Welding with the same material can ensure the firmness and stability of the welding. In this embodiment, the inner wall 21 is made of stainless steel and the outer wall 23 is made of carbon steel. When the sleeve 121 is welded to the inner wall 21, the sleeve 121 is made of stainless steel. In other embodiments, when the sleeve 121 is welded to the outer wall 23, the sleeve 121 is made of carbon steel.

[0051] In this embodiment, the material of the filling layer 122 is a sealing adhesive silicone rubber. It can tightly fill the gap between the sleeve 121 and the refrigerant pipe 11, effectively prevent the intrusion of impurities such as external air and moisture, prevent the failure of the insulation layer 22 and the corrosion of the refrigerant pipe 11 caused by these factors, and ensure the cleanliness and stable operation of the refrigerant pipeline 1 system. Specifically, in this embodiment, the sealing adhesive silicone rubber uses Shin-Etsu KE-45, which has a wide temperature range elasticity, strong adhesion to metal plastics, good weather resistance and corrosion resistance, so that it can adapt to temperature changes and chemical erosion, maintain a close connection with the sleeve 121 and the refrigerant pipe 11, and maintain the integrity of the protective component 12. In other embodiments, glass glue or other types of sealing adhesive silicone rubber can also be used, as long as the above-mentioned effects can be achieved, and no specific limitation is made here.

[0052] This embodiment provides an environmental test box, such as Figure 2 and Figure 3 As shown, the environmental test box 10 includes a heat exchange component 3, a refrigeration component and the connection structure between the above-mentioned refrigerant pipeline and the box body, and at least two groups of refrigerant pipelines 1 are passed through the box body 2 and connected to the heat exchange component 3 and the refrigeration component. Among them, the specific structure and working principle inside the environmental test box 10 are all existing technologies and will not be repeated here. By setting the above-mentioned refrigerant pipeline 1, when the environmental test box 10 is transported or vibrated during operation, it is possible to prevent the formation of gaps between the refrigerant pipe 1 and the box wall, and prevent internal moisture or external air from entering the insulation layer 22 to cause it to fail, thereby ensuring the stability of the temperature inside the box, improving the accuracy and reliability of the simulated temperature of the environmental test box 10, and providing precise conditions for product testing; at the same time, it avoids direct contact between the box body 2 and the refrigerant pipe 11, effectively preventing high temperature from being transmitted to the insulation layer 22 during welding, and avoiding damage to the insulation layer 22.

[0053] Specifically, Figure 2 and Figure 3As shown, the refrigerant pipeline 1 is provided with two groups, one for the input of the refrigerant and the other for the output of the refrigerant. In other embodiments, the refrigerant pipeline 1 can be provided with three groups, four groups, etc., as long as there are pipelines that can realize the refrigerant input and output functions, and the number of the refrigerant pipelines 1 is not specifically limited.

[0054] This embodiment also provides an installation method for the connection structure between the refrigerant pipeline and the box, which is used to install the connection structure between the refrigerant pipeline and the box. The installation method includes:

[0055] S1: Mounting holes are opened on the inner wall 21 and the outer wall 23, one end of the sleeve 121 is flush with the inner wall 21, and is fully welded to the mounting hole of the inner wall 21;

[0056] S2: Connect one end of the refrigerant pipe 11 to the heat exchange assembly 3, and pass the other end through the sleeve 121;

[0057] S3: Install the insulation layer and the outer wall outside the inner wall in sequence;

[0058] S4: Weld the other end of the refrigerant pipe to the refrigeration component outside the box;

[0059] S5: The sleeve 121 and the refrigerant pipe 11 are sealed and fixed with a filling layer 122;

[0060] S6: Glue and fix the other end of the protective component to the outer wall.

[0061] The installation method of the connection structure of the refrigerant pipeline and the box body is to first weld one end of the protective component 12 to the inner wall 21, and then install the insulation layer 22 and the outer wall 23 in order after the welding is completed to avoid damage to the insulation layer 22 caused by high temperature during the welding process. At the same time, after the welding of the refrigerant pipe 11 and the refrigeration component is completed, the protective component 12 and the outer wall 23 are glued and fixed to prevent the adverse effect of the high temperature of welding on the adhesive. When the refrigerant pipe 11 is welded to the refrigeration component, the high temperature effect on the insulation layer 22 during welding is also avoided due to the obstruction of the sleeve 121. This installation sequence can reduce the degradation of material properties caused by high temperature, extend the service life of the insulation layer 22 and the adhesive, and reduce the cost increase and time loss caused by material damage. At the same time, the protective component 12 is located between the refrigerant pipe 11 and the box wall of the box body 2, which can prevent the formation of gaps between the two during transportation or operation vibrations, and prevent internal moisture or external air from entering the insulation layer 22 to cause it to fail, so as to ensure the temperature stability inside the box. Moreover, its tight connection structure with the refrigerant pipe 11 and the box wall 2 can maintain the structural stability of the environmental test box 10, prevent the refrigerant pipe 11 from shifting and the connection from loosening, ensure the stability of the refrigerant circulation, accurately control the temperature inside the box, help the environmental test box 10 to operate stably for a long time, and improve the accuracy of product test results.

[0062] In this embodiment, after step S6, step S7 is further included, S7: wrapping the second cladding section 112 of the refrigerant pipe 11 with a thermal insulation sleeve. Wrapping the second cladding section 112 with the thermal insulation sleeve prevents the refrigerant pipe 11 from being exposed in the area not protected by the protective component 12, reduces the heat exchange between the refrigerant and the external environment, reduces the unnecessary heat dissipation, and enables the refrigerant to maintain a relatively constant temperature level throughout the entire transmission process, thereby ensuring the stable operation of the refrigerant system.

[0063] In this embodiment, after step S1 and before step S2, step S10 is further included, S10: applying sealing adhesive silicone rubber to the weld between the protection component 12 and the inner wall 21. This operation prevents the formation of pores or cracks at the weld due to poor welding, so that moisture inside the box body 2 penetrates into the insulation layer 22, causing water accumulation in the insulation layer 22 and loss of insulation performance.

[0064] In another optional embodiment, the installation method of the connection structure between the refrigerant pipeline and the box body may also include:

[0065] S1: a mounting hole is formed on the outer wall 23, and one end of the sleeve 121 is welded to the side wall of the mounting hole;

[0066] S2: One end of the refrigerant pipe 11 is passed through the sleeve 121 and welded to the refrigeration component outside the box body 2;

[0067] S3: Install the insulation layer 22 and the inner wall 21 on the outer wall 23 in sequence;

[0068] S4: The other end of the refrigerant pipe 11 is fixedly connected to the heat exchange assembly 3 inside the box 2;

[0069] S5: The sleeve 121 and the refrigerant pipe 11 are sealed and fixed with a filling layer 122;

[0070] S6: The other end of the protection component 12 is glued and fixed to the inner wall 21 .

[0071] The beneficial effects achieved by this installation method are exactly the same as those achieved by the above installation method, and will not be described in detail here.

[0072] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. The connection structure between the refrigerant pipeline and the box body is characterized in that: include: The box body (2) comprises an inner wall (21), a heat-insulating layer (22) and an outer wall (23), wherein the heat-insulating layer (22) is located between the inner wall (21) and the outer wall (23); A refrigerant pipeline (1) comprises a refrigerant pipe (11) and a protective component (12); the refrigerant pipe (11) passes through the box (2) and is used to connect a heat exchange component (3) inside the box (2) and a refrigeration component outside the box (2); the protective component (12) passes through the box (2) and covers the refrigerant pipe (11); one end of the protective component (12) is sealed and welded to one of the inner wall (21) and the outer wall (23); and the other end of the protective component (12) is sealed and glued to the other of the inner wall (21) and the outer wall (23).

2. The connection structure between the refrigerant pipeline and the box according to claim 1, characterized in that: The length of the protection component (12) is greater than the sum of the thicknesses of the inner wall (21), the thermal insulation layer (22) and the outer wall (23).

3. The connection structure between the refrigerant pipeline and the box according to claim 2, characterized in that: One end of the protective component (12) is arranged flush with the outer surface of the inner wall (21), and the other end of the protective component (12) extends 10-20 mm beyond the outer surface of the outer wall (23).

4. The connection structure between the refrigerant pipeline and the box according to claim 1, characterized in that: The refrigerant pipe (11) comprises a first covering section (111) and a second covering section (112); the first covering section (111) is covered with the protective component (12), and the second covering section (112) is covered with a thermal insulation sleeve.

5. The connection structure between the refrigerant pipeline and the box according to claim 1, characterized in that: The protective component (12) comprises a sleeve (121) and a filling layer (122); the sleeve (121) is sleeved on the outer periphery of the refrigerant pipe (11) and the gap between the two is filled with the filling layer (122); the sleeve (121) is closed and fixedly connected to the inner wall (21) and the outer wall (23).

6. The connection structure between the refrigerant pipeline and the box according to claim 5, characterized in that: The sleeve (121) is made of the same material as the outer wall (23) or the inner wall (21).

7. The connection structure between the refrigerant pipeline and the box according to claim 5, characterized in that: The material of the filling layer (122) is sealing adhesive silicone rubber.

8. An environmental test chamber, comprising a heat exchange component (3) and a refrigeration component, wherein the heat exchange component (3) is located inside the chamber (2), and the refrigeration component is located outside the chamber (2), characterized in that: It also includes a connection structure between a refrigerant pipeline and a housing as described in any one of claims 1 to 7, wherein at least two groups of the refrigerant pipelines (1) pass through the housing (2) and are connected to the heat exchange component (3) and the refrigeration component.

9. A method for installing a connection structure between a refrigerant pipeline and a box, for installing a connection structure between a refrigerant pipeline and a box according to any one of claims 1 to 7, wherein the protective component (12) comprises a sleeve (121) and a filling layer (122), the sleeve (121) being sleeved on the outer periphery of the refrigerant pipe (11) and the gap between the two being filled with the filling layer (122), characterized in that: Installation methods include: S1: The inner wall (21) and the outer wall (23) are provided with mounting holes, one end of the sleeve (121) is flush with the inner wall (21), and is fully welded to the mounting hole of the inner wall (21); S2: connecting one end of the refrigerant pipe (11) to the heat exchange component (3), and passing the sleeve (121) through the other end; S3: sequentially installing the thermal insulation layer (22) and the outer wall (23) outside the inner wall (21); S4: welding the other end of the refrigerant pipe (11) to the refrigeration component outside the box (2); S5: sealing and fixing the sleeve (121) and the refrigerant pipe (11) with the filling layer (122); S6: The other end of the protection component (12) is glued and fixed to the outer wall (23).

10. The method for installing the connection structure between the refrigerant pipeline and the box according to claim 9, characterized in that: After S1 and before S2, S10 is also included. S10: applying sealing adhesive silicone rubber to the weld between the protection component (12) and the inner wall (21).

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