Box body assembly and electric device

Abstract

The utility model discloses a box body assembly and an electric device, the box body assembly comprises a box body, the inner part of the box body is provided with an accommodating cavity, and the box wall of the box body is provided with at least two through holes; the heat exchange part is contained in the containing cavity, a heat exchange flow channel used for circulating a heat exchange medium is formed in the heat exchange part, the heat exchange part comprises at least two pipelines communicating with the heat exchange flow channel, the pipelines are hard pipes, and each pipeline corresponds to the corresponding adjacent through hole and is internally sleeved with the corresponding through hole; the box body is provided with a sealing structure used for sealing between the through hole and the pipeline. According to the box body assembly, the heat exchange piece has high flow path sealing performance, the box body has high protection performance, meanwhile, the cost can be reduced, and the reliability of the box body assembly can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrical devices, and in particular to a box assembly and an electrical device. Background Art

[0002] An electrical device generally includes a box and electrical components contained in the box. When the electrical device is working, the electrical components tend to generate a lot of heat, so a radiator is needed to cool and dissipate the heat of the electrical components. Currently, the radiator used in electrical devices is usually a liquid cooling plate. However, when the liquid cooling plate is assembled with the box, reliability problems are likely to occur, which will affect the reliability of the electrical device. Utility Model Content

[0003] The embodiments of the present application provide a box assembly and an electrical device, which can effectively improve the reliability of the box assembly, thereby helping to improve the reliability of the electrical device.

[0004] In a first aspect, an embodiment of the present application provides a box assembly, comprising: a box, a housing formed with a accommodating cavity inside the box, and a box wall of the box having at least two through holes; a heat exchange component received in the accommodating cavity and provided with a heat exchange flow channel inside for circulating a heat exchange medium, the heat exchange component comprising at least two pipes connected to the heat exchange flow channel, the pipes being hard pipes, each pipe being arranged corresponding to a similar through hole and being internally sleeved in the through hole; wherein the box is provided with a sealing structure for sealing between the through hole and the pipe.

[0005] In the above technical solution, the heat exchanger can be built into the box, which is conducive to simplifying the installation structure between the heat exchanger and the box, reducing manufacturing costs, and at the same time, the heat exchanger is not in contact with the outside world, so that the box assembly can be used in harsh environments, improving the adaptability of the box assembly. The pipe of the heat exchanger is a hard pipe, which can be directly fitted in the through hole of the box and connected to the external pipe fittings, which can simplify the connection structure between the heat exchanger and the external pipe fittings, reduce the probability of installation failure, and save space in the box. Since the box is provided with a sealing structure for sealing between the through hole and the pipe, the pipe of the heat exchanger and the through hole of the box can have a high sealing performance. In other words, the box assembly of the present application can reduce costs and improve the reliability of the box assembly while satisfying the requirements that the heat exchanger has a high flow path sealing performance and the box has a high protection performance.

[0006] In some embodiments of the present application, the sealing structure includes: a boss portion, which is provided on the box wall and has a number equal to and one-to-one correspondence with the through holes, the boss portion is provided with matching holes corresponding to the through holes, and the pipeline is passed through the matching holes of the adjacent boss portion; a first sealing member, which is sleeved on the pipeline and stops at the inner wall of the matching hole and the outer wall of the pipeline.

[0007] In the above technical solution, the pipe can not only be connected to the box wall through the through hole, but also be connected to the boss part by matching with the matching hole, so that the boss part can further fix and limit the pipe, thereby improving the installation reliability of the pipe. A smaller gap can be formed between the pipe and the matching hole of the boss part, increasing the difficulty of gaseous, particulate or liquid substances entering the accommodation cavity through the gap. On this basis, the first sealing member is sleeved on the pipe and stops at the inner wall of the matching hole and the outer wall of the pipe, which can play a sealing role, further increasing the difficulty of gaseous, particulate or liquid substances entering the accommodation cavity through the gap, thereby effectively improving the sealing between the pipe and the matching hole, and improving the protective performance of the box assembly.

[0008] In some embodiments of the present application, the first sealing component is made of elastic material.

[0009] In the above technical solution, the first seal can elastically stop on the inner wall of the matching hole and the outer wall of the pipe. Therefore, when the pipe expands and contracts under the alternating hot and cold effects of the heat exchange medium, the first seal has an elastic effect and can effectively reduce the probability of stress concentration during installation or operation of the pipe, which is beneficial to maintaining good sealing between the pipe and the matching hole at all times, thereby reducing the risk of leakage of the heat exchange medium and improving the sealing reliability between the pipe and the box.

[0010] In some embodiments of the present application, at least one of the inner wall of the matching hole and the outer wall of the pipe is provided with a limiting groove, and the first sealing member is at least partially provided in the limiting groove. In this technical solution, the limiting groove can cooperate with the first sealing member, thereby limiting the position of the first sealing member during the assembly process of the pipe and the matching hole, and the first sealing member can be reliably fixed at a pre-designed position, thereby improving the sealing reliability of the first sealing member between the pipe and the matching hole.

[0011] In some embodiments of the present application, the limiting groove is only provided on the outer wall of the pipe. In this technical solution, by providing the limiting groove only on the outer wall of the pipe, the number of limiting grooves can be reduced, thereby reducing the processing steps and reducing the manufacturing cost. Moreover, the first sealing member can be first assembled into the limiting groove of the pipe, and then the pipe with the first sealing member installed can be installed into the matching hole, thereby reducing the difficulty of installing the first sealing member and improving the assembly efficiency.

[0012] In some embodiments of the present application, the limiting groove is an annular groove arranged around the circumferential edge of the through hole, and a portion of the first sealing member is arranged in the limiting groove.

[0013] In the above technical solution, the limiting groove is an annular groove, so that the limiting groove and the first seal have a larger bonding surface, which can enhance the limiting effect on the first seal and improve the connection reliability of the first seal on the pipeline. In addition, the above solution can also make the gap structure formed between the first seal and the limiting groove more complex, which can extend the flow path of gaseous, particulate or liquid substances, increase the difficulty of gaseous, particulate or liquid substances passing through the gap between the first seal and the limiting groove, and further improve the sealing effect of the first seal between the pipeline and the matching hole, thereby improving the sealing reliability of the heat exchanger on the box.

[0014] In some embodiments of the present application, the boss portion is located in the accommodating cavity. In this technical solution, by arranging the boss portion inside the accommodating cavity, that is, the boss portion is located in the box body, compared with being arranged on the outside of the box body, this solution is conducive to reducing the number of parts on the outside of the box body, simplifying the structure of the outside of the box body, and improving the aesthetics of the outside of the box body. In addition, this solution can also separate the boss portion from the outside of the box body, reduce the probability of the boss portion being affected by external forces, and help reduce the probability of the boss portion and the first sealing member being damaged, thereby improving the reliability of the sealing structure.

[0015] In some embodiments of the present application, the boss portion and the box body are an integrated piece. In this technical solution, by setting the boss portion and the box body as an integrated piece, it is beneficial to improve the connection reliability between the pipeline and the box body, and reduce the leakage positions that can form the heat exchange medium leakage points between the pipeline, the boss portion and the box body, which is beneficial to reduce the requirements for the sealing structure and improve the overall sealing of the box body assembly. At the same time, the adoption of this solution can also reduce the number of parts of the box body assembly, reduce assembly steps, and improve assembly efficiency.

[0016] In some embodiments of the present application, the box body and the boss portion are separate structures, and the sealing structure includes: a second sealing member, which is arranged between the boss portion and the box wall and around the circumferential edge of the mating hole; the box body assembly includes: a fastener, which connects the boss portion and the box wall.

[0017] In the above technical solution, the box body and the boss portion are two separate components, which can be manufactured separately, thereby reducing the manufacturing difficulty of the box body and the boss portion, and further reducing the cost. Since the boss portion and the pipeline are both located in the box body, the boss portion can be assembled to the pipeline first, and then the boss portion can be connected to the box body, which is conducive to reducing the probability of installation interference and facilitating the assembly of the heat exchanger. The second seal can play a sealing role between the boss portion and the box wall, reducing the probability of gaseous, particulate or liquid substances entering the accommodating cavity from between the boss portion and the box wall, and improving the sealing reliability of the box assembly. The fastener can connect the boss portion and the box wall, and at the same time, it can also clamp the second seal between the boss portion and the box wall, so that the second seal can play a better sealing effect.

[0018] In some embodiments of the present application, the fastener is a threaded fastener, the box wall is provided with a mounting hole, the boss portion is provided with a threaded hole, the threaded fastener is passed through the mounting hole, and is fitted in the threaded hole.

[0019] In the above technical solution, by setting the fastener as a threaded fastener, the threaded fastener can pass through the mounting hole of the box wall and threadably cooperate with the threaded hole of the boss part, thereby fixing the boss part and the box wall together. This fastening connection method has a simple structure and can reduce costs while also providing better connection reliability between the boss part and the box wall.

[0020] In some embodiments of the present application, the end surface of the pipeline away from the heat exchange element is flush with the outer side surface of the box.

[0021] In the above technical solution, the end surface of the pipe away from the heat exchanger is flush with the outer side surface of the box, that is, the farthest end of the pipe does not exceed the box wall of the box, so the pipe does not occupy the space outside the box, which is conducive to making the structure of the outer part of the box assembly simpler, reducing the probability of interference between the pipe and other external components, and making it easier to carry and install on other devices. In addition, this solution can also reduce the situation where the pipe collides with other components and is damaged, which is conducive to reducing the number of repairs and reducing repair costs.

[0022] In some embodiments of the present application, the inner wall of the pipe is provided with a threaded connection portion, and the threaded connection portion is used to connect an external pipe fitting. In this technical solution, the inner wall of the pipe is provided with a threaded connection portion, so that the pipe can be conveniently connected to the external pipe fitting. This connection structure is relatively simple in structure, reliable in connection, and also conducive to reducing costs.

[0023] In a second aspect, an embodiment of the present application further provides an electrical device, comprising a box assembly as described above.

[0024] In the above technical solution, since the box assembly has high protection and reliability, the electrical device using the box assembly can also have high reliability, which is conducive to extending the service life of the electrical device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a box assembly provided in some embodiments of the present application;

[0027] Figure 2 Schematic diagram of the internal structure of the box assembly provided in some embodiments of the present application Figure 1 ;

[0028] Figure 3 for Figure 2 A local enlarged schematic diagram of location III;

[0029] Figure 4 Schematic diagram of the internal structure of the box assembly provided in some embodiments of the present application Figure 2 ;

[0030] Figure 5 A schematic diagram of a three-dimensional structure of a heat exchange component is provided for some embodiments of the present application;

[0031] Figure 6 An exploded view of a heat exchange component is provided for some embodiments of the present application;

[0032] Figure 7 A schematic diagram of the cooperation of a pipe, a first seal and a boss portion provided in some embodiments of the present application.

[0033] Icons: 100, box assembly; 10, box; 10a, accommodating chamber; 101, through hole; 102, box wall; 103, mounting hole; 20, heat exchanger; 201, pipeline; 2011, limiting groove; 2012, threaded connection part; 2013, U-shaped gap; 202, heat exchanger body; 30, sealing structure; 31, boss part; 311, matching hole; 312, threaded hole; 32, first sealing part; 33, second sealing part; 331, avoidance hole; 40, fastener; 200, external pipe fitting; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0036] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0037] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0039] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0040] The term "plurality" used in the present application refers to two or more (including two).

[0041] An electrical device generally includes a box and electrical components contained in the box. When the electrical device is working, the electrical components tend to generate a lot of heat, so a radiator is needed to cool and dissipate the heat of the electrical components. Currently, the radiator used in electrical devices is usually a liquid cooling plate. However, when the liquid cooling plate is assembled with the box, reliability problems are likely to occur, which will affect the reliability of the electrical device.

[0042] In the box structure of general electrical devices, in order to make the box meet high protection requirements, the box is generally an aluminum shell box and a sheet metal box. The cost of the aluminum shell box is relatively high in small batch production, so the sheet metal box is preferred. Generally, there are two structures of the liquid cooling plate in the sheet metal box: built-in and external. The external liquid cooling plate solution is to use the entire liquid cooling plate as the base of the box, and then add the middle box and the upper box for sealing, so that the entire box can meet the high protection requirements, but the relative cost is high, and it is not suitable for use in harsh environments (the liquid cooling plate is generally made of aluminum and is prone to electrochemical corrosion). The built-in liquid cooling plate solution is to place the liquid cooling plate inside the sheet metal box, and connect the liquid cooling plate to the outside of the box through a hose connector, but this method is easy to introduce fault points (that is, the seal at the liquid cooling plate and the hose connector is prone to failure). In addition, the installation between the hose connector and the liquid cooling plate, and the hose connector and the box will occupy the internal space of the box and affect the layout of the internal parts of the box.

[0043] Based on the above considerations, in order to solve the reliability problem that is easily caused by the installation of a liquid cooling plate in the box structure, the present application designs a box assembly, including a box and a heat exchanger, the interior of the box is formed with a accommodating cavity, and the box wall of the box is provided with at least two through holes; the heat exchanger is accommodated in the accommodating cavity, and a heat exchange flow channel for circulating heat exchange medium is provided inside, the heat exchanger includes at least two pipes connecting the heat exchange flow channel, the pipes are hard pipes, each pipe is arranged corresponding to a similar through hole, and is internally sleeved in the through hole; wherein, the box is provided with a sealing structure for sealing between the through hole and the pipe.

[0044] In a box assembly of this structure, the heat exchanger can be built into the box, which is conducive to simplifying the installation structure between the heat exchanger and the box, reducing manufacturing costs, and at the same time, the heat exchanger is not in contact with the outside world, so that the box assembly can be used in harsh environments, improving the adaptability of the box assembly. The pipe of the heat exchanger is a hard pipe, which can be directly fitted in the through hole of the box and connected to the external pipe fittings, which can simplify the connection structure between the heat exchanger and the external pipe fittings, reduce the probability of installation failure, and save space in the box. Since the box is provided with a sealing structure for sealing between the through hole and the pipe, the pipe of the heat exchanger and the through hole of the box have a high sealing performance. In other words, the box assembly of the present application can reduce costs and effectively improve the reliability of the box assembly while satisfying the requirements that the heat exchanger has a high flow path sealing performance and the box has a high protection performance.

[0045] The box assembly disclosed in the embodiment of the present application can be used in, but is not limited to, electrical devices such as frequency converters, batteries, servers, data center switches, industrial machinery, and high-performance computers, which helps to expand the scope of application of the box assembly.

[0046] According to some embodiments of the present application, in the first aspect, referring to Figures 1 to 3 The embodiment of the present application provides a box assembly 100, including a box 10 and a heat exchanger 20. A housing cavity 10a is formed inside the box 10, and at least two through holes 101 are provided on the box wall 102 of the box 10. The heat exchanger 20 is accommodated in the housing cavity 10a, and a heat exchange flow channel for circulating a heat exchange medium is provided inside. The heat exchanger 20 includes at least two pipes 201 connected to the heat exchange flow channel. The pipes 201 are hard pipes. Each pipe 201 is arranged corresponding to a similar through hole 101 and is internally sleeved in the through hole 101. Among them, the box 10 is provided with a sealing structure 30 for sealing between the through hole 101 and the pipe 201.

[0047] The box body 10 may refer to a closed shell component for protecting the internal electrical components from the influence of the external environment. The box body 10 may be made of, but not limited to, metal, plastic, composite material or other materials. Exemplarily, the box body 10 may be a sheet metal box. The accommodating cavity 10a may refer to the space defined inside the box body 10, which can be used to accommodate electrical components. The through hole 101 may refer to a hole opened on the box body 10 for connecting the inner and outer spaces of the box body 10. The through hole 101 is used to install the pipe 201, and the shape of the through hole 101 is the same as the cross-sectional shape of the pipe 201, and may be, but not limited to, a round hole, a square hole or a waist-shaped hole, etc. Exemplarily, the pipe 201 may be a round tube, and the through hole 101 is a round hole correspondingly.

[0048] The heat exchanger 20 may refer to a component that can be used for heat exchange. In the present application, the heat exchanger 20 can exchange heat with the electrical components inside the electrical device, thereby being used to cool or heat the electrical components. The heat exchanger 20 may be, but is not limited to, components of other structural forms such as cold plates and cold pipes. It should be noted that cold plates and cold pipes are not limited to cooling electrical components when heat exchange media circulates, but can also heat electrical components by passing a heat exchange medium at a higher temperature. The heat exchange medium used by the heat exchanger 20 in the present application may be, but is not limited to, a liquid medium and a gaseous medium. Exemplarily, the heat exchange medium may be water.

[0049] "At least two pipes 201" may mean that the number of pipes 201 may be two, three, four, etc., and among the at least two pipes 201, at least one may constitute the inlet pipe of the heat exchange element 20 for introducing the heat exchange medium, and at least one may constitute the outlet pipe of the heat exchange element 20 for outputting the heat exchange medium after heat exchange.

[0050] In the above embodiment, the housing 10 may have a first direction X, a second direction Y and a third direction Z, and the first direction X, the second direction Y and the third direction Z may be perpendicular to each other. The heat exchanger 20 may be arranged on a wall panel (such as a top wall or a bottom wall) of the housing 10 at one end of the first direction X; or, the heat exchanger 20 may also be arranged on a wall panel of the housing 10 at one end of the second direction Y; or, the heat exchanger 20 may also be arranged on a wall panel of the housing 10 at one end of the third direction Z. The housing wall 102 may be a wall panel of the housing 10 on which the heat exchanger 20 is arranged, or may be a wall panel adjacent to a wall panel of the housing 10 on which the heat exchanger 20 is arranged.

[0051] A hard pipe may refer to a pipe made of a hard material, so that the hard pipe has a strong rigidity. The hard pipe may be, but is not limited to, a pipe made of metal, plastic or other composite materials.

[0052] The sealing structure 30 may refer to a structure that can perform a sealing function between the through hole 101 and the pipe 201 .

[0053] In the above embodiment, since the heat exchanger 20 is accommodated in the accommodating cavity 10a, the heat exchanger 20 does not need to be arranged outside the box 10. The heat exchanger 20 can be separated from the external environment by the box 10, which can reduce the probability of the heat exchanger 20 being hit, and further reduce the probability of the heat exchanger 20 being damaged. At the same time, the probability of the heat exchanger 20 coming into contact with dust, rainwater and other substances outside the box 10 is also relatively small, thereby reducing the probability of electrochemical corrosion of the heat exchanger 20, which is beneficial to improving the reliability of the heat exchanger 20. Moreover, the heat exchanger 20 is arranged inside the box 10. Compared with being arranged outside the box 10, this built-in solution can reduce the installation requirements of the box 10 and the heat exchanger 20, which is beneficial to reducing the parts required for installing the heat exchanger 20 or simplifying the installation structure of the heat exchanger 20, thereby reducing costs.

[0054] Since the pipe 201 of the heat exchanger 20 is a hard pipe, the pipe 201 can be directly installed in the through hole 101 and sealed by the sealing structure 30. This method is conducive to reducing the number of parts between the heat exchanger 20 and the external pipe (compared with the method of hoses and joints, each pipe 201 can save two adapters), reducing costs, and because the number of parts is small, it can also reduce the probability of installation failures and improve the installation reliability of the pipe 201 and the box 10. Secondly, the heat exchanger 20 is directly connected to the external pipe 200 through the pipe 201, which means that there is only one docking position between the heat exchanger 20 and the external pipe 200, so there is only one leakage point position (i.e., the docking position between the pipe 201 and the external pipe 200), which is conducive to reducing the position where the heat exchange medium may leak between the heat exchanger 20 and the box 10, and is conducive to reducing the probability of sealing failure. On this basis, the through hole 101 and the pipe 201 are sealed by the sealing structure 30, so that the heat exchanger 20 in the box assembly 100 has a higher sealing reliability.

[0055] In the above technical solution, the heat exchanger 20 can be built into the box 10, which is conducive to simplifying the installation structure between the heat exchanger 20 and the box 10 and reducing the manufacturing cost. At the same time, the heat exchanger 20 does not contact the outside world, so that the box assembly 100 can be used in harsh environments, and the adaptability of the box assembly 100 is improved. The pipe 201 of the heat exchanger 20 is a hard pipe. The pipe 201 can be directly matched in the through hole 101 of the box 10 and connected to the external pipe 200, which can simplify the connection structure between the heat exchanger 20 and the external pipe 200, reduce the probability of installation failure, and save space in the box 10. Since the box 10 is provided with a sealing structure 30 for sealing between the through hole 101 and the pipe 201, the pipe 201 of the heat exchanger 20 and the through hole 101 of the box 10 can have a high sealing performance. That is to say, the box assembly 100 of the present application can reduce costs and improve the reliability of the box assembly 100 while satisfying the requirements that the heat exchange element 20 has high flow path sealing performance and the box 10 has high protection performance.

[0056] In some embodiments of the present application, reference Figure 3 The sealing structure 30 includes a boss portion 31 and a first sealing member 32. The boss portions 31 are arranged on the box wall 102, and the number of the boss portions 31 is equal to and corresponds to the through holes 101. The boss portions 31 are provided with matching holes 311 corresponding to the through holes 101, and the pipeline 201 is passed through the matching holes 311 of the adjacent boss portions 31; the first sealing member 32 is sleeved on the pipeline 201, and stops at the inner wall of the matching hole 311 and the outer wall of the pipeline 201.

[0057] The boss portion 31 may refer to a structure that is disposed on the box wall 102 and protrudes relative to the box wall 102. The boss portion 31 may be, but is not limited to, rectangular, circular, triangular, etc. The boss portion 31 may be disposed on the inner side of the accommodating cavity 10a, or may be disposed on the outer side of the accommodating cavity 10a. Among them, the matching hole 311 may refer to a hole that passes through the boss portion 31 and is opposite to the through hole 101, and the matching hole 311 may be concentrically disposed with the through hole 101 and have the same size. For example, when the through hole 101 is a circular hole, the diameter of the matching hole 311 is equal to the diameter of the through hole 101; when the through hole 101 is a square hole, the side length of the matching hole 311 is equal to the side length of the through hole 101.

[0058] Among them, "the pipe 201 is inserted into the matching hole 311 of the adjacent boss portion 31", which can be understood as a narrow and small gap can be formed between the pipe 201 and the matching hole 311 of the boss portion 31, and it is difficult for gaseous, particulate or liquid substances to enter the accommodating cavity 10a through the gap between the pipe 201 and the matching hole 311, which can play a certain sealing role. In this embodiment, gaseous, particulate or liquid substances can include but are not limited to dust, water, gaseous heat exchange medium, liquid heat exchange medium, etc.

[0059] The first seal 32 may be a component that can play a sealing role. The first seal 32 may be a component with an opening in the center, so that the first seal 32 can be sleeved on the outside of the pipe 201 and can be installed in the matching hole 311. The shape of the first seal 32 can be the same as the shape of the pipe 201. For example, if the pipe 201 is a round pipe, the first seal 32 is a circular sealing ring.

[0060] In the above technical solution, the pipe 201 can not only be connected to the box wall 102 through the through hole 101, but also be connected to the boss portion 31 by matching with the matching hole 311, so that the boss portion 31 can further fix and limit the pipe 201, thereby improving the installation reliability of the pipe 201. A small gap can be formed between the pipe 201 and the matching hole 311 of the boss portion 31, which increases the difficulty of gaseous, particulate or liquid substances entering the accommodation chamber 10a through the gap. On this basis, the first sealing member 32 is sleeved on the pipe 201 and stops at the inner wall of the matching hole 311 and the outer wall of the pipe 201, which can play a sealing role, further increasing the difficulty of gaseous, particulate or liquid substances entering the accommodation chamber 10a through the gap, thereby effectively improving the sealing between the pipe 201 and the matching hole 311, and improving the protection performance of the box assembly 100.

[0061] In some embodiments of the present application, the first sealing member 32 is centrally disposed in the mating hole 311 or disposed close to the center of the mating hole 311. It is understood that in this embodiment, the first sealing member 32 can be centrally disposed in the mating hole 311 (see Figure 3 ); or, the first sealing member 32 is arranged near the center of the matching hole 311.

[0062] In the above scheme, the use of this structure can make the distance between the first seal 32 and the two ends of the matching hole 311 relatively far, so that the distance for gaseous, particulate or liquid substances to reach the first seal 32 from either end of the matching hole 311 through the gap between the pipe 201 and the matching hole 311 is relatively long, which can further increase the difficulty for air or liquid to reach the first seal 32, which is beneficial to improving the sealing between the pipe 201 and the boss portion 31.

[0063] In some embodiments of the present application, the first sealing member 32 is made of an elastic material.

[0064] The elastic material part may refer to a part made of elastic material, which can be deformed when subjected to external force, but can return to its original shape and size when the external force is removed. The material of the elastic material part may be, but is not limited to, rubber, polyurethane and the like.

[0065] In the above technical solution, the first seal 32 can elastically stop on the inner wall of the matching hole 311 and the outer wall of the pipe 201. Therefore, when the pipe 201 expands and contracts under the alternating hot and cold effects of the heat exchange medium, since the first seal 32 has an elastic effect, it can effectively reduce the probability of stress concentration in the pipe 201 during installation or operation, which is beneficial to maintaining good sealing between the pipe 201 and the matching hole 311 at all times, thereby reducing the risk of leakage of the heat exchange medium and improving the sealing reliability between the pipe 201 and the box body 10.

[0066] In some embodiments of the present application, at least one of the inner wall of the matching hole 311 and the outer wall of the pipe 201 is provided with a limiting groove 2011 , and the first sealing member 32 is at least partially disposed in the limiting groove 2011 .

[0067] The limiting groove 2011 may refer to a groove that cooperates with the first sealing member 32 and limits the first sealing member 32. The limiting groove 2011 may be a groove of relatively large size, and a relatively large portion of the first sealing member 32 may be accommodated in the limiting groove 2011. For example, the limiting groove 2011 is an annular groove, and the peripheral outer edge of the first sealing member 32 is arranged in the limiting groove 2011, and the peripheral inner edge of the first sealing member 32 is located outside the limiting groove 2011. The peripheral inner edge of the first sealing member 32 can be closely attached to the outer wall of the pipe 201 to play a sealing role. The limiting groove 2011 can also be a groove of smaller size, and a smaller portion of the first seal 32 is accommodated in the limiting groove 2011. For example, the limiting groove 2011 is an arc-shaped groove, and is arranged in multiple circumferential intervals along the matching hole 311. The circumferential outer edge of the first seal 32 can be partially arranged in the limiting groove 2011, or a plurality of protrusions are arranged on the circumferential outer edge of the first seal 32, and the protrusions are arranged in the corresponding limiting groove 2011. In this embodiment, the outer edge portion of the first seal 32 is located in the limiting groove 2011, and the inner edge portion of the first seal 32 is located outside the limiting groove 2011, and is tightly attached to the outer wall of the pipe 201 to play a sealing role.

[0068] In the above solution, the inner wall of the matching hole 311 may be provided with a limiting groove 2011; or the outer wall of the pipe 201 may be provided with a limiting groove 2011 (see Figure 3 and Figure 6 ); or, the inner wall of the matching hole 311 and the outer wall of the pipe 201 can be provided with a limiting groove 2011.

[0069] In the above technical solution, the limiting groove 2011 can cooperate with the first sealing member 32, thereby limiting the first sealing member 32 during the assembly process of the pipe 201 and the matching hole 311, and reliably fixing the first sealing member 32 at a pre-designed position, thereby improving the sealing reliability of the first sealing member 32 between the pipe 201 and the matching hole 311.

[0070] In some embodiments of the present application, the limiting groove 2011 is only provided on the outer wall of the pipe 201 .

[0071] In the above technical solution, the limiting groove 2011 is only provided on the outer wall of the pipe 201, so that the number of the limiting grooves 2011 can be reduced, thereby reducing the processing steps and reducing the manufacturing cost. Moreover, the first sealing member 32 can be first assembled into the limiting groove 2011 of the pipe 201, and then the pipe 201 with the first sealing member 32 installed can be installed into the matching hole 311, thereby reducing the difficulty of installing the first sealing member 32 and improving the assembly efficiency.

[0072] In some embodiments of the present application, reference Figure 6 and Figure 7The limiting groove 2011 is an annular groove arranged around the circumferential edge of the through hole 101 , and part of the first sealing member 32 is arranged in the limiting groove 2011 .

[0073] Since the limiting groove 2011 is an annular groove, the first sealing member 32 is also an annular member disposed around the pipe 201, so that the portion of the first sealing member 32 located in the limiting groove 2011 can form a U-shaped gap 2013 with the limiting groove 2011 (refer to Figure 7 In the dashed line structure, it should be noted that Figure 7 The U-shaped gap 2013 in the figure is only for illustration. In practice, the U-shaped gap 2013 refers to a very narrow gap, and the gap width can be understood as approaching zero). Therefore, a complex gap structure can be formed between the first sealing member 32 and the limiting groove 2011, and it is much more difficult for gaseous, particulate or liquid substances to pass from one end of the first sealing member 32 in the first direction X to the other end through the U-shaped gap 2013 (refer to Figure 7 ), the sealing effect of the first sealing member 32 will be better.

[0074] In the above technical solution, the limiting groove 2011 is an annular groove, so that the limiting groove 2011 and the first seal 32 have a larger bonding surface, which can enhance the limiting effect on the first seal 32 and improve the connection reliability of the first seal 32 on the pipe 201. In addition, the above solution can also make the gap structure formed between the first seal 32 and the limiting groove 2011 more complex, which can extend the flow path of gaseous, particulate or liquid substances, increase the difficulty of gaseous, particulate or liquid substances passing through the gap between the first seal 32 and the limiting groove 2011, and further improve the sealing effect of the first seal 32 between the pipe 201 and the matching hole 311, thereby improving the sealing reliability of the heat exchanger 20 on the box 10.

[0075] In some embodiments of the present application, reference Figure 3 , the boss portion 31 is located in the accommodating cavity 10a.

[0076] In this technical solution, by setting the boss portion 31 inside the accommodating cavity 10a, that is, the boss portion 31 is located inside the box body 10, compared with setting it outside the box body 10, this solution is conducive to reducing the number of parts outside the box body 10, simplifying the structure outside the box body 10, and improving the aesthetics of the outside of the box body 10. In addition, through this solution, the boss portion 31 can be separated from the outside of the box body 10, reducing the probability of the boss portion 31 being affected by external forces, which is conducive to reducing the probability of the boss portion 31 and the first sealing member 32 being damaged, thereby improving the reliability of the sealing structure 30.

[0077] In some embodiments of the present application, the boss portion 31 and the box body 10 are an integral piece.

[0078] In this embodiment, the boss portion 31 and the box body 10 can be an integral part formed by integral molding, for example, the boss portion 31 and the box body 10 are formed by the same metal plate through sheet metal processing. The boss portion 31 and the box body 10 can also be metal parts, and the two metal parts are formed into an integral part by welding.

[0079] In the above technical solution, by setting the boss portion 31 and the box body 10 as an integral part, it is helpful to improve the connection reliability of the pipeline 201 and the box body 10, and reduce the leakage positions of the heat exchange medium leakage points formed between the pipeline 201, the boss portion 31 and the box body 10, which is helpful to reduce the requirements for the sealing structure 30 and improve the overall sealing of the box body assembly 100. At the same time, the adoption of this solution can also reduce the number of parts of the box body assembly 100, reduce the assembly steps, and improve the assembly efficiency.

[0080] In some embodiments of the present application, reference Figure 3 The box body 10 and the boss portion 31 are split structures, and the sealing structure 30 includes a second sealing member 33, which is arranged between the boss portion 31 and the box wall 102 and around the circumferential edge of the matching hole 311; the box body assembly 100 includes a fastener 40, which connects the boss portion 31 and the box wall 102.

[0081] The second sealing member 33 may refer to a component that can play a sealing role. The second sealing member 33 may be an annular component arranged around the circumference of the matching hole 311, for example, the second sealing member 33 is a sealing ring or a sealing gasket. The second sealing member 33 may also be a sheet-like component with an opening in the center, for example, the second sealing member 33 is a sealing sheet. The second sealing member 33 may be, but is not limited to, a rubber material member, a sealant, and the like.

[0082] The fastener 40 may refer to a component used to simultaneously connect the boss portion 31 and the box wall 102. The fastener 40 may be, but is not limited to, a bolt, a pin, or a cam, etc. When the fastener 40 is a cam, the cam can be connected to the box wall 102, and the boss portion 31 is provided with a slot, and the cam can fix the boss portion 31 and the box wall 102 together by cooperating with the slot.

[0083] It can be understood that the box body 10 and the boss portion 31 are two separate components. For example, the boss portion 31 can be a block-shaped component. Optionally, the boss portion 31 is a square block (see Figure 5 and Figure 6). The housing 10 and the boss portion 31 are designed as a split structure, so that the housing 10 and the boss portion 31 can be manufactured separately, and the manufacturing difficulty of the housing 10 and the boss portion 31 is reduced, thereby reducing the cost. Since the boss portion 31 and the pipe 201 are both located in the housing 10, the boss portion 31 can be assembled to the pipe 201 first, and then the boss portion 31 can be connected to the housing 10, which is beneficial to reduce the probability of installation interference and facilitate the assembly of the heat exchanger 20. The second sealing member 33 can play a sealing role between the boss portion 31 and the housing wall 102, reduce the probability of gaseous, particulate or liquid substances entering the accommodating cavity 10a from between the boss portion 31 and the housing wall 102, and improve the sealing reliability of the housing assembly 100. The fastener 40 can connect the boss portion 31 and the box wall 102 , and at the same time can clamp the second sealing member 33 between the boss portion 31 and the box wall 102 , so that the second sealing member 33 can achieve a better sealing effect.

[0084] In some embodiments of the present application, reference Figure 3 , Figure 5 and Figure 6 The fastener 40 is a threaded fastener. The box wall 102 is provided with a mounting hole 103 , the boss portion 31 is provided with a threaded hole 312 , and the threaded fastener is passed through the mounting hole 103 and fits in the threaded hole 312 .

[0085] The threaded fastener may refer to a component connected to the boss portion 31 and the box body 10 through a thread. The threaded fastener may be, but is not limited to, a bolt, a screw, a stud, etc. The mounting hole 103 may refer to a light hole that passes through the box wall 102. The threaded hole 312 may refer to a blind hole provided on the side of the boss portion 31 close to the box wall 102.

[0086] In the above technical solution, by setting the fastener 40 as a threaded fastener, the threaded fastener can pass through the mounting hole 103 of the box wall 102 and threadably cooperate with the threaded hole 312 of the boss portion 31, thereby fixing the boss portion 31 and the box wall 102 together. This fastening connection method has a simple structure and can reduce costs while also providing better connection reliability between the boss portion 31 and the box wall 102.

[0087] In some embodiments of the present application, a plurality of mounting holes 103 may be provided at intervals around the circumference of the through hole 101, a plurality of threaded holes 312 may be provided at intervals around the circumference of the matching hole 311, and the number of threaded holes 312 and mounting holes 103 may be equal and arranged in one-to-one correspondence. There are a plurality of threaded fasteners, and they are arranged in one-to-one correspondence with the plurality of mounting holes 103.

[0088] It is understood that the number of the mounting holes 103, the threaded holes 312 and the threaded fasteners may be, but is not limited to, two, three or four, etc. For example, referring to Figure 5 and Figure 6 The mounting holes 103 and the threaded holes 312 are arranged at four equal intervals along the circumferential direction.

[0089] In the above technical solution, the box wall 102 and the boss portion 31 can be connected by multiple threaded fasteners, thereby increasing the connection point positions between the box wall 102 and the boss portion 31, improving the connection reliability between the box wall 102 and the boss portion 31, and also improving the sealing reliability of the second seal 33 between the boss portion 31 and the box wall 102.

[0090] Optionally, refer to Figure 5 and Figure 6 The second seal 33 is a sheet-shaped component, and the peripheral edge contour of the second seal 33 is flush with the peripheral edge contour of the boss portion 31 close to the box wall 102. The second seal 33 is provided with an avoidance hole 331 corresponding to the threaded hole 312.

[0091] The avoidance hole 331 may refer to a hole for avoiding a threaded fastener. When the threaded fastener connects the boss portion 31 and the box wall 102, the threaded fastener can pass through the mounting hole 103 and the avoidance hole 331 and then be threadedly connected with the threaded hole 312.

[0092] In the above technical solution, the peripheral edge contour of the second seal 33 and the peripheral edge contour of the boss portion 31 close to the box wall 102 remain flush, which can be understood as the surface area of ​​the second seal 33 and the surface area of ​​the boss portion 31 close to the box wall 102 are equal, so that the second seal 33 can fully cover the surface of the boss portion 31 close to the box wall 102, so that the second seal 33 has a larger sealing surface for the boss portion 31, and the obstruction of gaseous, particulate or liquid substances passing through the second seal 33 is further increased, thereby improving the sealing reliability.

[0093] In some embodiments of the present application, reference Figure 3 The end surface of the pipe 201 away from the heat exchange element 20 is flush with the outer side surface of the box body 10.

[0094] In the above technical solution, the end surface of the pipe 201 away from the heat exchanger 20 is flush with the outer side surface of the box 10, that is, the farthest end of the pipe 201 does not exceed the box wall 102 of the box 10, so that the pipe 201 does not occupy the space outside the box 10, which is conducive to making the structure of the outside of the box assembly 100 simpler, reducing the probability of interference between the pipe 201 and other external components, and also convenient to carry and install on other devices. In addition, this solution can also reduce the situation where the pipe 201 collides with other components and is damaged, which is conducive to reducing the number of repairs and reducing the repair cost.

[0095] In some embodiments of the present application, reference Figure 3The inner wall of the pipe 201 is provided with a threaded connection portion 2012 , and the threaded connection portion 2012 is used to connect the external pipe fitting 200 .

[0096] The threaded connection part 2012 may be an internal thread, and the outer tube wall of the external pipe fitting 200 may be provided with an external thread, so that the pipeline 201 can be threadedly connected to the external pipe fitting 200 through the threaded connection part 2012 .

[0097] The external pipe 200 may refer to a pipe used to input or output a heat exchange medium to the heat exchange element 20. The number of the external pipes 200 may be equal to the number of the pipes 201 and correspond one to one. Figure 1 and Figure 4 There are two pipes 201 in the present application, one of which is an inlet pipe and the other is an outlet pipe. There are two external pipes 200, one of which is connected to the inlet pipe for inputting heat exchange medium into the heat exchange element 20, and the other is connected to the outlet pipe for outputting the heat exchange medium after heat exchange in the heat exchange element 20.

[0098] In the above technical solution, a threaded connection portion 2012 is provided on the inner wall of the pipe 201, so that the pipe 201 can be conveniently connected to the external pipe 200. This connection structure is relatively simple, has reliable connection, and is also conducive to reducing costs.

[0099] In some embodiments of the present application, reference Figures 3 to 6 The heat exchanger 20 also includes a heat exchanger body 202 . A heat exchange flow channel is formed inside the heat exchanger body 202 and is connected to the pipeline 201 . The heat exchanger body 202 is connected to the box body 10 .

[0100] The heat exchanger body 202 may refer to the main structure of the heat exchanger 20, and a heat exchange flow channel for the heat exchange medium to flow is formed inside. The heat exchanger body 202 and the pipe 201 may be integrally formed or welded together. The heat exchanger body 202 may be, but is not limited to, rectangular or circular.

[0101] In the above technical solution, since the pipe 201 can cooperate with the through hole 101 on the box wall 102, on this basis, the heat exchanger body 202 can be connected to the box body 10, which can improve the connection reliability of the heat exchanger 20 and the box body 10.

[0102] According to the box assembly 100 provided in the embodiment of the present application, the box assembly 100 is applied to the frequency converter. The box assembly 100 includes a liquid cooling plate, a sealing block, a first sealing member 32, a second sealing member 33, a box 10 and a water cooling joint. The liquid cooling plate includes a liquid cooling plate body and two pipes 201, wherein one end of the pipe 201 is provided with a groove for installing the first sealing member 32, and the other end is welded to the body of the liquid cooling plate. The liquid cooling plate is fixed to the bottom of the inner side of the box 10 by screw connection, so as to realize the compact installation of the liquid cooling plate. The sealing block is installed on the pipe 201 of the liquid cooling plate, and the first sealing member 32 is installed on the inner side of the sealing block. The pipe 201 of the liquid cooling plate forms an axial seal with the first sealing member 32 and the sealing block, allowing the pipe 201 to have a sealing effect under a certain axial movement when assembled with the sealing block, and can reduce the probability of rigid contact between the pipe 201 and the sealing block, and reduce the probability of stress concentration; at the same time, it can also play a sealing role when the pipe 201 is deformed in the axial and radial directions due to thermal expansion and contraction during operation, and can also reduce the probability of rigid contact between the pipe 201 and the sealing block, thereby reducing the probability of stress concentration. A second sealing member 33 is installed at one end of the sealing block, which is screwed to the blind hole of the sealing block on the outside of the box 10, and the sealing block is fastened to the inner wall of the box 10, thereby achieving a high protection effect when the liquid cooling plate is connected to the outside. The water-cooling joint is fastened to the internal thread in the pipe 201 of the liquid cooling plate by threaded connection on the outside of the box 10.

[0103] In a second aspect, an embodiment of the present application further provides an electrical device, comprising the box assembly 100 as described above.

[0104] In the above technical solution, since the box assembly 100 has high protection and reliability, the electrical device using the box assembly 100 can also have high reliability, which is beneficial to prolonging the service life of the electrical device.

[0105] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0106] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A box assembly, characterized in that: include: A box body, wherein a receiving cavity is formed inside the box body, and a box wall of the box body is provided with at least two through holes; The heat exchange component is accommodated in the accommodating cavity and is provided with a heat exchange flow channel for circulating the heat exchange medium. The heat exchange component includes at least two pipes connected to the heat exchange flow channel. The pipes are hard pipes. Each of the pipes is arranged corresponding to the adjacent through holes and is internally sleeved in the through holes. The box body is provided with a sealing structure for sealing between the through holes and the pipes.

2. The box assembly according to claim 1, characterized in that The sealing structure comprises: The boss portion is provided on the box wall and has the same number as the through holes and corresponds one to one. The boss portion is provided with matching holes corresponding to the through holes, and the pipe is passed through the matching holes of the adjacent boss portion. The first sealing member is sleeved on the pipe and stops at the inner wall of the matching hole and the outer wall of the pipe.

3. The box assembly according to claim 2, characterized in that The first sealing component is made of elastic material.

4. The box assembly according to claim 2, characterized in that At least one of the inner wall of the matching hole and the outer wall of the pipe is provided with a limiting groove, and the first sealing member is at least partially provided in the limiting groove.

5. The box assembly according to claim 4, characterized in that: The limiting groove is only provided on the outer wall of the pipe.

6. The box assembly according to claim 4, characterized in that The limiting groove is an annular groove arranged around the circumferential edge of the through hole, and a portion of the first sealing member is arranged in the limiting groove.

7. The box assembly according to any one of claims 2 to 6, characterized in that: The boss portion is located in the accommodating cavity.

8. The box assembly according to any one of claims 2 to 6, characterized in that: The boss portion and the box body are an integral piece.

9. The box assembly according to any one of claims 2 to 6, characterized in that: The box body and the boss portion are separate structures, and the sealing structure includes a second sealing member, which is arranged between the boss portion and the box wall and around the circumferential edge of the matching hole; the box body assembly includes a fastener, which connects the boss portion and the box wall.

10. The box assembly according to claim 9, characterized in that: The fastener is a threaded fastener. The box wall is provided with a mounting hole, the boss portion is provided with a threaded hole, and the threaded fastener is passed through the mounting hole and fitted in the threaded hole.

11. The box assembly according to any one of claims 1 to 6, characterized in that: The end surface of the pipeline away from the heat exchange element is flush with the outer side surface of the box body.

12. The box assembly according to claim 11, characterized in that The inner wall of the pipe is provided with a threaded connection portion, and the threaded connection portion is used to connect an external pipe fitting.

13. An electrical device, characterized in that: The invention comprises a box assembly according to any one of claims 1 to 12.

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