A sealed enclosure for an expandable surface

Abstract

The application discloses a sealed machine case with an assembled extended surface, which comprises a main frame, the main frame comprises three beam groups arranged in sequence from front to back, three vertical beam groups connected with the ends of the three beam groups, and a top beam group and a bottom beam group connected with the vertical beam groups and the beam groups and forming a closed frame; the main frame is divided into a front area and a rear area by the beam group in the middle, a front panel and a partition plate are respectively installed on the beam group and the vertical beam group on the front side and the beam group in the middle, the front area is formed by the front panel, the partition plate, a cover plate, a side plate and a bottom plate which are respectively installed on the covered area of the front area and jointly enclose a front cavity; a plurality of plug-in shell assemblies arranged along the length direction of the main frame are arranged in the rear area, each plug-in shell assembly has an open end and a mounting end fixed on the beam group on the rear side, and a communication port is formed on the partition plate and in sealed butt joint with each open end to expand the surface area of the front cavity. The sealed machine case can simultaneously realize the improvement of the heat dissipation performance and the high IP protection level requirement.

Description

Technical Field

[0001] This invention belongs to the field of electrical technology, and specifically relates to a sealed enclosure with an assembled extended surface. Background Technology

[0002] With the advancement of domestic production of plug-in components, the heat generation of plug-in components and the total heat generation of the chassis are constantly increasing. While ensuring the heat dissipation performance of the device, it is also necessary to ensure the overall IP protection performance of the device to meet the needs of diverse application scenarios.

[0003] When the total heat output of components in a standard 19-inch chassis increases, the only way to reduce the temperature of the target components is by drilling holes in the top and bottom panels and adding heatsinks to the side of the chassis. However, this approach has the following drawbacks:

[0004] (1) The reduction in IP protection level caused by drilling holes in the cover plate, and the accumulation of dust and ash during long-term operation;

[0005] (2) To ensure electromagnetic compatibility performance, the opening size and opening area are limited, which does not improve the heat dissipation effect.

[0006] (3) The side of the chassis can only provide limited space for heat sink installation, which cannot improve the heat dissipation of the chips on the plug-in in the middle of the chassis. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a sealed chassis with a modular extended surface, which can improve the chassis's heat dissipation capacity while achieving a high IP protection rating.

[0008] The technical solution provided by this invention is as follows:

[0009] This invention provides a prefabricated, extended-surface sealed enclosure, comprising a main frame, which includes three sets of crossbeams arranged sequentially from front to back, three sets of vertical beams connected to the ends of the three sets of crossbeams, and a top beam set and a bottom beam set connecting the vertical beam sets and the crossbeam sets to form a closed frame. The main frame is divided into a front section and a rear section by the middle set of crossbeams. A front panel and a partition plate are respectively installed on the front and middle sets of crossbeams and vertical beams. The front section is enclosed by the front panel, the partition plate, and a cover plate, side plate, and bottom plate respectively installed on the area covered by the front section to form a front cavity. The rear section is provided with multiple sets of plug-in shell assemblies arranged along the length of the main frame. Each plug-in shell assembly has an open end and a mounting end fixed to the crossbeams located on the rear side. The partition plate has a communication port that seals and connects with each open end to expand the surface area of ​​the front cavity.

[0010] Furthermore, each of the three crossbeam groups consists of an upper crossbeam and a lower crossbeam, each of the three vertical beam groups consists of a left vertical beam and a right vertical beam, the top beam group consists of a left top beam and a right top beam, and the bottom beam group consists of a left bottom beam and a right bottom beam. The upper crossbeam, lower crossbeam, left vertical beam, right vertical beam, left top beam, right top beam, left bottom beam, and right bottom beam are all profile components, and the ends of adjacent profile components are interlocked and fixedly connected by a first fastener.

[0011] Furthermore, the partition plate is a square plate with rectangular notches at all four corners. The uppermost and lowermost ends of the square plate are located between the upper and lower ends of the upper crossbeam and the lower crossbeam of the middle crossbeam group, respectively. The leftmost and rightmost ends are located between the left and right ends of the left vertical beam and the right vertical beam of the middle vertical beam group, respectively. A second fastener is provided near the rectangular notches to connect the partition plate with the middle crossbeam group and the middle vertical beam group. The square plate has several rectangular connecting openings. Each connecting opening has an upper mounting surface, a lower mounting surface, a left mounting surface, and a right mounting surface on its upper, lower, left, and right sides to achieve a sealed connection with the opening end of the plug-in shell assembly.

[0012] Furthermore, the plug-in shell assembly comprises an outer shell cover plate, an outer shell bottom plate, two outer shell side plates, and an outer shell rear plate. The outer shell cover plate and the outer shell bottom plate are mirror images of each other and each includes a horizontal plate, a first connecting plate, and a second connecting plate. The horizontal plate is placed on the lower crossbeam of the crossbeam group located on the rear side and its length is equal to the distance between the outer edge of the lower crossbeam and the partition plate. The first connecting plate extends longitudinally along both sides of the horizontal plate along its length direction and is spaced apart from the edge of the horizontal plate along its length direction. The second connecting plate extends longitudinally along the edge of the horizontal plate near the partition plate and its extension direction is opposite to that of the first connecting plate. The outer shell cover plate and the outer shell bottom plate are respectively connected to the upper and lower ends of the outer shell side plates by a third fastener. The outer shell rear plate is a square plate whose upper and lower ends both extend beyond the upper and lower ends of the outer shell side plates. The upper and lower ends of the outer shell rear plate are connected to the outer side of the crossbeam group located on the rear side by a fourth fastener and to the middle of the outer shell side plate by a fifth fastener.

[0013] Furthermore, the two outer shell side panels are mirror images of each other and each has a Z-shaped structure, including an inner extension plate, a vertical plate, and an outer extension plate connected in sequence. The outer shell cover plate and the outer shell bottom plate are respectively connected to the upper and lower ends of the vertical plate by the fifth fastener, and the connection between the first connecting plate and the vertical plate does not exceed the edge of the horizontal plate length direction. The middle of the outer shell rear plate is connected to the inner extension plate by the fifth fastener. The second connecting plates of the outer shell cover plate and the outer shell bottom plate, and the outer extension plates of the outer shell side panels on both sides are respectively connected to the upper mounting surface, lower mounting surface, left mounting surface, and right mounting surface by the sixth fastener.

[0014] Furthermore, the corresponding ends of the first connecting plate and the vertical plate are directly attached to each other and fixedly connected by the fifth fastener; or the upper end and / or lower end of the vertical plate are provided with a mounting groove, the first connecting plate is embedded in the mounting groove and fixed by the fifth fastener.

[0015] Furthermore, the first fastener, the second fastener, the third fastener, the fourth fastener, the fifth fastener, and the sixth fastener are all screws.

[0016] Furthermore, the front panel, partition plate, cover plate, bottom plate, and side plate are all made of aluminum alloy plates, and the outer shell cover plate, outer shell bottom plate, outer shell side plate, and outer shell rear plate of the plug-in shell assembly are all made of aluminum alloy plates.

[0017] Beneficial effects

[0018] This invention uses a connecting port on the partition plate to seal and connect the front cavity with each plug-in housing assembly in the rear area, effectively expanding the heat dissipation surface area without increasing the openings in the cover plate, thus avoiding the reduction of IP protection performance and dust accumulation problems. The expansion method of the connecting port is not limited by electromagnetic compatibility openings, and the docking area can be flexibly designed according to the heat generation. The plug-in housing assemblies are arranged along the length of the main frame, so that the heat dissipation path covers the plug-in chips in the middle and rear of the chassis, solving the defect of the limited effective range of the side heat sink. While ensuring the IP protection performance of the whole machine, it significantly improves the heat dissipation capacity and meets the needs of diverse usage scenarios.

[0019] This invention increases the heat dissipation area of ​​the chassis by adding a plug-in shell assembly without changing the chassis's external dimensions, front panel, and plug-in rear panel. This enhances the chassis's heat dissipation capacity while achieving a high IP protection rating, avoiding the problems of foreign object intrusion and dust accumulation caused by opening ventilation holes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a sealed enclosure structure with an assembled extended surface according to the present invention;

[0021] Figure 2 This is a schematic diagram of the sealed chassis structure of the present invention after concealing the front panel, side panels and cover plate;

[0022] Figure 3 This is a schematic diagram of the sealed enclosure structure from another perspective of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the partition plate of the present invention;

[0024] Figure 5 This is a schematic diagram of the plug-in shell component structure of the present invention;

[0025] Figure 6 This is an exploded view of the plug-in shell assembly of the present invention; Explanation of reference numerals in the attached drawings: 1. Front panel; 2. Second upper crossbeam; 3. First upper crossbeam; 4. Cover plate; 5. Side plate; 6. Second right vertical beam; 7. First right vertical beam; 8. Second lower crossbeam; 9. First lower crossbeam; 10. Base plate; 11. Screw; 12. Partition plate; 13. Insert shell assembly; 14. Outer shell cover plate; 15. Outer shell side plate; 16. Outer shell bottom plate; 17. Outer shell rear plate; 18. Third upper crossbeam; 19. Third left vertical beam; 20. Third lower crossbeam; 21. Right bottom beam. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0027] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] Example 1

[0030] like Figure 1 and Figure 2As shown, this embodiment of the invention provides a prefabricated extended surface sealed enclosure, including a main frame. The main frame includes three crossbeam groups arranged sequentially from front to back, three vertical beam groups connected to the ends of the three crossbeam groups respectively, and a top beam group and a bottom beam group connecting the vertical beam groups and the crossbeam groups to form a closed frame. The main frame is divided into a front area and a rear area by the crossbeam group near the middle. A front panel 1 and a partition plate 12 are respectively installed on the crossbeam group and the vertical beam group located on the front side and near the middle. The front area is enclosed by the front panel 1, the partition plate 12, and the cover plate 4, side plate 5 and bottom plate 10 respectively installed on the area covered by the front area to form a front cavity. The rear area is provided with multiple sets of plug-in shell assemblies 13 arranged along the length of the main frame. Each plug-in shell assembly 13 has an open end and an installation end fixed to the crossbeam group located on the rear side. The partition plate 12 has a communication port that seals and connects with each open end to expand the surface area of ​​the front cavity.

[0031] This invention uses a connecting port on the partition plate to seal and connect the front cavity with each plug-in housing assembly in the rear area, effectively expanding the heat dissipation surface area without increasing the openings in the cover plate, thus avoiding the reduction of IP protection performance and dust accumulation problems. The expansion method of the connecting port is not limited by electromagnetic compatibility openings, and the docking area can be flexibly designed according to the heat generation. The plug-in housing assemblies are arranged along the length of the main frame, so that the heat dissipation path covers the plug-in chips in the middle and rear of the chassis, solving the defect of the limited effective range of the side heat sink. While ensuring the IP protection performance of the whole machine, it significantly improves the heat dissipation capacity and meets the needs of diverse usage scenarios.

[0032] Example 2

[0033] like Figure 1 and Figure 2As shown, this embodiment of the invention provides a prefabricated extended surface sealed enclosure, including a main frame. The main frame includes three sets of crossbeams arranged sequentially from front to back: a front crossbeam set, a middle crossbeam set, and a rear crossbeam set; three sets of vertical beams connected to the ends of the three crossbeam sets: a front vertical beam set, a middle vertical beam set, and a rear horizontal-vertical beam set; and a top beam set and a bottom beam set connecting the vertical beam sets and the crossbeam sets to form a closed frame. The main frame is divided into a front section and a rear section by the middle crossbeam set. A front panel 1 and a partition plate 12 are respectively installed on the front and middle crossbeam sets and vertical beam sets. Specifically, the front panel 1 is fixed to the first upper crossbeam 3, the first lower crossbeam 9, the first left vertical beam, and the first right vertical beam 7 by screws 11. The front section is divided into a front and a rear section. Panel 1, partition plate 12, and cover plate 4, side plate 5, and bottom plate 10, respectively installed in the area covered by the front section, together enclose the front cavity. The side plates 5 on both sides are fixed to the first left vertical beam and the second left vertical beam or the first right vertical beam 7 and the second right vertical beam 6 by screws 11. The cover plate 4 is fixed to the first upper crossbeam 3, the second upper crossbeam 2, the top beam group, and the bottom beam group by screws 11. The bottom plate 10 is fixed to the first lower crossbeam 9, the second lower crossbeam 8, the top beam group, and the bottom beam group by screws 11. The rear section is provided with multiple sets of plug-in shell assemblies 13 arranged along the length of the main frame. Each plug-in shell assembly 13 has an open end and an installation end fixed to the crossbeam group located on the rear side. The partition plate 12 has a communication port that seals and connects with each open end to expand the surface area of ​​the front cavity. Figure 3 ).

[0034] In this embodiment, the three crossbeam groups are each composed of an upper crossbeam and a lower crossbeam, namely the first upper crossbeam 3, the second upper crossbeam 2, the third upper crossbeam 18, the first lower crossbeam 9, the second lower crossbeam 8, and the third lower crossbeam 20. The three vertical beam groups are each composed of a left vertical beam and a right vertical beam, namely the first left vertical beam, the second left vertical beam, the third left vertical beam 19, the first right vertical beam 7, the second right vertical beam 6, and the third right vertical beam. The top beam group is composed of a left top beam and a right top beam. The bottom beam group is composed of a left bottom beam and a right bottom beam 21. The upper crossbeam, lower crossbeam, left vertical beam, right vertical beam, left top beam, right top beam, left bottom beam, and right bottom beam 21 are all profile components. The ends of adjacent profile components are interlocked and fixedly connected by a first fastener.

[0035] In this embodiment, the partition plate 12 is a square plate with rectangular notches at all four corners. The uppermost and lowermost ends of the square plate are located between the upper and lower ends of the upper crossbeam and the lower crossbeam of the middle crossbeam group, respectively. The leftmost and rightmost ends are located between the left and right ends of the left vertical beam and the right vertical beam of the middle vertical beam group, respectively. A second fastener is provided near the rectangular notches to connect the partition plate 12 with the middle crossbeam group and the middle vertical beam group. Specifically, the partition plate 12 is installed on the second upper crossbeam 2, the second lower crossbeam 8, the second left vertical beam, and the second right vertical beam 6 and is fixedly connected by screws 11. The square plate has several rectangular connecting openings. Each connecting opening has an upper mounting surface, a lower mounting surface, a left mounting surface, and a right mounting surface on its upper, lower, left, and right sides to achieve a sealed connection with the opening end of the plug-in housing assembly 13. Figure 4 ).

[0036] In this embodiment, the plug-in shell assembly 13 consists of a shell cover plate 14, a shell bottom plate 16, shell side plates 15 on both sides, and a shell rear plate 17. The shell cover plate 14 and the shell bottom plate 16 are mirror images of each other and each includes a horizontal plate, a first connecting plate, and a second connecting plate. The horizontal plate is placed on the lower crossbeam of the crossbeam group located on the rear side and its length is equal to the distance between the outer edge of the lower crossbeam and the partition plate 12. The first connecting plate extends longitudinally along both sides of the horizontal plate along its length direction and is spaced apart from the edge of the horizontal plate along its length direction. The second connecting plate extends longitudinally along the edge of the horizontal plate on the side near the partition plate 12 and its extension direction is opposite to that of the first connecting plate. The shell cover plate 14 and the shell bottom plate 16 are respectively connected to the upper and lower ends of the first connecting plate and the shell side plate 15 by a third fastener. The shell rear plate 17 is a square plate whose upper and lower ends both exceed the upper and lower ends of the shell side plate 15. The upper and lower ends of the shell rear plate 17 are connected to the outer side of the crossbeam group located on the rear side by a fourth fastener and to the middle of the shell side plate 15 by a fifth fastener.

[0037] In this embodiment, the two outer shell side plates 15 are mirror images of each other and each has a Z-shaped structure, including an inner extension plate, a vertical plate, and an outer extension plate connected in sequence. The outer shell cover plate 14 and the outer shell bottom plate 16 are respectively connected to the upper and lower ends of the vertical plate by the fifth fastener, and the connection between the first connecting plate and the vertical plate does not exceed the edge of the horizontal plate length direction. The middle of the outer shell rear plate 17 is connected to the inner extension plate by the fifth fastener. The second connecting plates of the outer shell cover plate 14 and the outer shell bottom plate 16, and the outer extension plates of the outer shell side plates 15 on both sides correspond to the upper mounting surface, lower mounting surface, left mounting surface, and right mounting surface, respectively, and are fixedly connected by the sixth fastener.

[0038] In this embodiment, the corresponding ends of the first connecting plate and the vertical plate are directly attached to each other and fixedly connected by the fifth fastener; or the upper end and / or lower end of the vertical plate are provided with a mounting groove, the first connecting plate is embedded in the mounting groove and fixed by the fifth fastener.

[0039] Specifically, such as Figure 6 As shown, the plug-in housing assembly 13 includes a housing cover plate 14, a housing side plate 15, a housing bottom plate 16, and a housing rear plate 17. The installation position of the opening end of the plug-in housing assembly 13 corresponds to the communication port of the partition plate 12. The housing rear plate 17 is installed on the third upper crossbeam 18 and the third lower crossbeam 20 by screws 11. Both the housing cover plate 14 and the housing bottom plate 16 are provided with a first connecting plate for connecting with the housing side plate 15. The first connecting plate is provided with screw holes. The housing side plate 15 has an inner extension plate and an outer extension plate facing inward and outward at both ends for connecting the partition plate 12 and the housing rear plate 17, respectively. The plug-in housing assembly 13 is made of aluminum alloy profile.

[0040] In this embodiment, the first fastener, the second fastener, the third fastener, the fourth fastener, the fifth fastener, and the sixth fastener are all screws 11.

[0041] In this embodiment, the front panel 1, partition plate 12, cover plate 4, bottom plate 10 and side plate 5 are all made of aluminum alloy plates, and the outer cover plate 14, outer bottom plate 16, outer side plate 15 and outer rear plate 17 of the plug-in shell assembly 13 are all made of aluminum alloy plates.

[0042] The present invention increases the surface area of ​​the chassis and improves its heat dissipation capacity by adding a plug-in shell assembly 13 to the chassis. At the same time, the front panel 1, cover plate, bottom plate 10, side plate 5, partition plate 12 and plug-in shell assembly 13 of the chassis form a sealed space, achieving a high IP protection level for the chassis.

[0043] The present invention aims to enhance the heat dissipation capacity of the chassis by increasing the chassis surface area, while achieving a high IP protection level. The installation and implementation process is as follows:

[0044] The first step is the assembly of the box and beam structures:

[0045] Connect the second right vertical beam 6, the second left vertical beam, the second upper horizontal beam 2, and the second lower horizontal beam 8 to each other using screws 11; install the partition plate 12, ensuring the second right vertical beam 6, the second left vertical beam, the second upper horizontal beam 2, and the second lower horizontal beam 8 are flush against the partition plate 12. Align the second right vertical beam 6 and the second left vertical beam with the holes in the partition plate 12 and tighten the screws 11 to secure them. Align the second upper horizontal beam 2 and the second lower horizontal beam 8 with the holes in the partition plate 12 and tighten the screws 11 to secure them. Connect the first upper horizontal beam 3, the first lower horizontal beam 9, the first right vertical beam 7, and the first left vertical beam to each other using screws 11, and then connect the left top... The beams, right top beam, left bottom beam, and right bottom beam 21 are inserted and fitted into the aforementioned horizontal and vertical beams and locked with screws 11. The cover plate 4 is installed, and it is pressed against the first upper horizontal beam 3, the second upper horizontal beam 2, the left top beam, and the right top beam. After aligning the holes, the screws 11 are tightened to fix it. The base plate 10 is installed, and it is pressed against the first lower horizontal beam 9, the second lower horizontal beam 8, the left bottom beam, and the right bottom beam 21. After aligning the holes, the screws 11 are tightened to fix it. The side plate 5 (taking the right side as an example) is installed, and it is pressed against the first right vertical beam 7, the second right vertical beam 6, the right top beam, and the right bottom beam 21. After aligning the holes, the screws 11 are tightened to fix it.

[0046] The second step is the assembly of the plug-in shell components and the assembly between the plug-in shell components and the housing:

[0047] Secure the outer casing cover 14, outer casing side panels 15, and outer casing bottom plate 16 by aligning the holes and tightening the screws 11. Secure the plug-in housing assembly 13 to the opening of the partition plate 12 by aligning the holes on each mounting surface and tightening the screws 11. Connect the third upper crossbeam 18, third lower crossbeam 20, third right vertical beam, and third left vertical beam 19 to the left top beam, right top beam, left bottom beam, and right bottom beam 21 by interlocking and tightening the screws 11. At this point, the chassis is open at both ends, allowing for the placement of components. After placing the contents, secure the front panel 1 to the first upper crossbeam 3, first lower crossbeam 9, first right vertical beam 7, and second left vertical beam by aligning the holes and tightening the screws 11. Secure the rear outer casing 17 to the outer casing side panels 15, outer casing bottom plate 16, third upper crossbeam 18, and third lower crossbeam 20 by aligning the holes and tightening the screws 11. The complete sealed enclosure assembly is now complete.

[0048] This invention expands the chassis surface area by adding a plug-in shell assembly, thereby improving the chassis's heat dissipation capacity. Simultaneously, it maintains a sealed interior space, preventing foreign object intrusion and dust accumulation caused by openings. This achieves both improved heat dissipation performance and high IP protection rating requirements. This invention effectively enhances chassis heat dissipation while maintaining chassis airtightness, making it widely applicable to usage scenarios with both high heat generation and high IP protection requirements.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of the present invention without departing from the scope of the present invention are within the protection scope of the present invention.

Claims

1. A prefabricated, extended-surface sealed enclosure, characterized in that, The system includes a main frame, comprising three sets of crossbeams arranged sequentially from front to back, three sets of vertical beams connected to the ends of the three sets of crossbeams, and a top beam set and a bottom beam set connecting the vertical beam sets and the crossbeam sets to form a closed frame. The main frame is divided into a front section and a rear section by the crossbeams in the middle. Front panels and partitions are installed on the crossbeams and vertical beams in the front and middle sections, respectively. The front section is enclosed by the front panel, partitions, and cover plates, side plates, and bottom plates installed on the areas covered by the front section to form a front cavity. The rear section contains multiple sets of plug-in shell assemblies arranged along the length of the main frame. Each plug-in shell assembly has an open end and an installation end fixed to the crossbeams in the rear section. The partitions have communication ports that seal and connect with each open end to expand the surface area of ​​the front cavity.

2. The modular, expandable surface enclosure of claim 1, wherein, The three crossbeam groups are each composed of an upper crossbeam and a lower crossbeam. The three vertical beam groups are each composed of a left vertical beam and a right vertical beam. The top beam group is composed of a left top beam and a right top beam. The bottom beam group is composed of a left bottom beam and a right bottom beam. The upper crossbeam, lower crossbeam, left vertical beam, right vertical beam, left top beam, right top beam, left bottom beam, and right bottom beam are all profile components. The ends of adjacent profile components are interlocked and fixedly connected by a first fastener.

3. The modular, expandable surface enclosure of claim 2, wherein, The partition plate is a square plate with rectangular notches at all four corners. The top and bottom ends of the square plate are located between the upper and lower ends of the upper beam and the lower beam of the middle crossbeam group, respectively. The left and right ends are located between the left and right ends of the left vertical beam and the right vertical beam of the middle vertical beam group, respectively. A second fastener is provided near the rectangular notches to connect the partition plate with the middle crossbeam group and the middle vertical beam group. The square plate has several rectangular connecting holes. Each connecting hole has an upper mounting surface, a lower mounting surface, a left mounting surface, and a right mounting surface on its top, bottom, left, and right sides to achieve a sealed connection with the opening end of the plug-in shell assembly.

4. The modular, expandable surface enclosure of claim 3, wherein, The plug-in shell assembly consists of a shell cover plate, a shell bottom plate, shell side plates on both sides, and a shell rear plate. The shell cover plate and the shell bottom plate are mirror images of each other and each includes a horizontal plate, a first connecting plate, and a second connecting plate. The horizontal plate is placed on the lower crossbeam of the crossbeam group located on the rear side and its length is equal to the distance between the outer edge of the lower crossbeam and the partition plate. The first connecting plate extends longitudinally along both sides of the horizontal plate along its length direction and is spaced apart from the edge of the horizontal plate along its length direction. The second connecting plate extends longitudinally along the edge of the horizontal plate near the partition plate and its extension direction is opposite to that of the first connecting plate. The shell cover plate and the shell bottom plate are respectively connected to the upper and lower ends of the shell side plates by a third fastener. The shell rear plate is a square plate whose upper and lower ends both exceed the upper and lower ends of the shell side plates. The upper and lower ends of the shell rear plate are connected to the outer side of the crossbeam group located on the rear side by a fourth fastener and to the middle of the shell side plate by a fifth fastener.

5. The assembled extended surface sealed enclosure according to claim 4, characterized in that, The two outer shell side panels are mirror images of each other and are Z-shaped structures, including an inner extension plate, a vertical plate and an outer extension plate connected in sequence. The outer shell cover plate and the outer shell bottom plate are respectively connected to the upper and lower ends of the vertical plate by the fifth fastener, and the connection between the first connecting plate and the vertical plate does not exceed the edge of the horizontal plate length direction. The middle of the outer shell rear plate is connected to the inner extension plate by the fifth fastener. The second connecting plates of the outer shell cover plate and the outer shell bottom plate, and the outer extension plates of the outer shell side panels on both sides are respectively connected to the upper mounting surface, lower mounting surface, left mounting surface and right mounting surface by the sixth fastener.

6. The assembled extended surface sealed enclosure according to claim 5, characterized in that, The corresponding ends of the first connecting plate and the vertical plate are directly attached to each other and fixedly connected by the fifth fastener; or the upper end and / or lower end of the vertical plate are provided with a mounting groove, the first connecting plate is embedded in the mounting groove and fixed by the fifth fastener.

7. The assembled extended surface sealed enclosure according to claim 6, characterized in that, The first, second, third, fourth, fifth, and sixth fasteners are all screws.

8. The assembled extended surface sealed enclosure according to claim 4, characterized in that, The front panel, partition plate, cover plate, bottom plate, and side plate are all made of aluminum alloy plates, and the outer shell cover plate, outer shell bottom plate, outer shell side plate, and outer shell rear plate of the plug-in shell assembly are all made of aluminum alloy plates.

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