Ground air supply box and ground air supply system

Abstract

According to the ground air supply box, an air inlet is formed in an upper cover and / or a side plate of a box body, an air outlet is formed in the top of the upper cover, first connecting assemblies arranged in the height direction are arranged on the upper cover, and the box body is provided with second connecting assemblies which can be connected with the first connecting assemblies in a clamped mode and are arranged in the height direction; according to the ground air supply box, the upper cover is detachably installed above the box body, the first connecting assembly is adjustably connected with the second connecting assembly in a clamped mode, the upper cover can be driven to be adjusted in height, a technician can assemble the ground air supply box again according to site conditions, the height of the ground air supply box is adjusted, and construction quality and flexibility are improved.

Description

Technical Field

[0001] This application relates to the field of building equipment technology, and in particular to a ground-mounted air supply box. Background Technology

[0002] Conventional floor ventilation boxes have a fixed height when installed within the subgrade. If the subgrade is not thick enough, the usual practice is to place concrete or insulation material under the ventilation box. However, if it is later discovered that the subgrade is too thin, on-site cutting is necessary, which is time-consuming, labor-intensive, and results in uneven cuts, affecting construction quality and slowing down the construction progress. Therefore, there is an urgent need for a new type of floor ventilation box that can be adjusted in height and assembled on-site by workers according to the construction conditions, thereby improving construction quality. Utility Model Content

[0003] The purpose of this application is to overcome the problem in the prior art that the height of the ground air supply box cannot be adjusted at any time according to the specific conditions of on-site construction, and to provide a ground air supply box.

[0004] The technical solution of this application provides a ground air supply box, including a top cover, a box body and an air inlet, wherein the air inlet is provided on the side plate of the top cover and / or the box body, and the top of the top cover is provided with an air outlet;

[0005] The top cover is provided with a first connecting component arranged along the height direction, and the box body is provided with a second connecting component that can be engaged with the first connecting component and arranged along the height direction. The top cover is detachably installed on the top of the box body. The first connecting component can be adjusted to engage with the second connecting component and can drive the top cover to adjust its height.

[0006] Furthermore, the first connecting component includes multiple first hooks, and the second connecting component includes multiple second hooks;

[0007] Each of the first hooks is horizontally mounted on the side plate of the upper cover and arranged along the height direction;

[0008] Each of the second hooks is horizontally disposed on the side plate of the box and arranged along the height direction;

[0009] The first hook can be adjusted to engage with the second hook, and can drive the upper cover to adjust its height.

[0010] Furthermore, the first hook is positioned downwards, and the second hook is positioned upwards.

[0011] Furthermore, it also includes a locking assembly, which includes a plurality of first locking holes disposed on the side plate of the upper cover, a second locking hole disposed on the side plate of the housing, and a locking element;

[0012] The plurality of first locking holes are arranged parallel to each other and spaced apart along the height direction;

[0013] When the top cover is locked to the box body, one of the first locking holes is aligned with the second locking hole, and the locking member passes through one of the first locking holes and the second locking hole.

[0014] Furthermore, it also includes an air control component, which is used to adjust the air intake area of ​​the air inlet;

[0015] When the first connecting component is disposed on the inner side of the two end side plates of the upper cover, and the second connecting component is disposed on the outer side of the two end side plates of the box body,

[0016] The air inlet is located on the side panel of the upper cover, and the air control component is located on the side panel of the box body;

[0017] When the first connecting component is disposed on the outer side of both end plates of the upper cover, and the second connecting component is disposed on the inner side of both end plates of the box body,

[0018] The air inlet is located on the side panel of the box body, and the air control component is located on the side panel of the top cover.

[0019] Furthermore, the air control component includes an air control port, which is located on the same vertical line as the air inlet. The air inlet can overlap or separate from the air control port as the upper cover is adjusted up and down.

[0020] Furthermore, the air control component includes air vents and a sliding plate;

[0021] When the air vent is located on the side panel of the box body, the air vent extends vertically upward to the top of the side panel of the box body, and the sliding plate is slidably located on the inner side of the side panel of the box body and can block the air vent.

[0022] When the air vent is located on the side plate of the upper cover, the air vent extends vertically downward to the bottom of the side plate of the upper cover, and the sliding plate is slidably located inside the side plate of the upper cover and can block the air vent.

[0023] Furthermore, an air outlet panel is provided at the air outlet, and the air outlet panel includes multiple air outlet holes.

[0024] Furthermore, a sealing ring is provided at the connection between the top cover and the box body.

[0025] The technical solution of this application also provides a ground air supply system, including a fresh air duct and a ground air supply box as described above, wherein the fresh air duct is connected to the air inlet of the ground air supply box.

[0026] The above technical solution has the following beneficial effects:

[0027] The ground-mounted air supply box of this application has an air inlet provided on the top cover and / or the side panel of the box body, an air outlet provided on the top of the top cover, and a first connecting component arranged along the height direction on the top cover. The box body has a second connecting component that can be engaged with the first connecting component and is arranged along the height direction. This allows the top cover to be detachably installed on the top of the box body, the first connecting component to be adjustablely engaged with the second connecting component, and the height of the top cover to be adjusted. Technicians can then assemble the box according to the site conditions and adjust the height of the ground-mounted air supply box, thus improving construction quality and flexibility. Attached Figure Description

[0028] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. In the drawings:

[0029] Figure 1 This is a front view of a ground air supply box according to an embodiment of this application;

[0030] Figure 2 This is a front sectional view of the ground air supply box in one embodiment of this application;

[0031] Figure 3 This is a cross-sectional view of the first connecting component and the second connecting component in one embodiment of this application;

[0032] Figure 4 This is a side view of a ground air supply box according to one embodiment of this application;

[0033] Figure 5 This is a side view of the box body in one embodiment of this application;

[0034] Figure 6 This is a front view of a ground air supply box including an air control vent in one embodiment of this application;

[0035] Figure 7 This is a front view of a ground air supply box including an air control vent, according to another embodiment of this application;

[0036] Figure 8 This is a front view of a ground air supply box including a wind control component in one embodiment of this application;

[0037] Figure 9 This is a side sectional view of the ground air supply box in one embodiment of this application;

[0038] Figure 10 This is a front view of the ground air supply box in another embodiment of this application;

[0039] Figure 11 This is a side view of the ground air supply box in another embodiment of this application;

[0040] Figure 12 This is a side cross-sectional view of the ground air supply box in another embodiment of this application;

[0041] Figure 13 This is a front view of the ground air supply box in one embodiment of this application;

[0042] Figure 14 This is a front sectional view of the ground air supply box in one embodiment of this application;

[0043] Figure 15 This is a cross-sectional view of the first connecting component and the second connecting component in one embodiment of this application;

[0044] Figure 16 This is a front view of a ground air supply box including a wind control component in one embodiment of this application;

[0045] Figure 17 This is a side view of the ground air supply box in one embodiment of this application;

[0046] Figure 18 This is a side view of the top cover in one embodiment of this application;

[0047] Figure 19 This is a side sectional view of the ground air supply box in one embodiment of this application;

[0048] Figure 20 This is a front view of the ground air supply box in another embodiment of this application;

[0049] Figure 21 This is a side view of the ground air supply box in another embodiment of this application;

[0050] Figure 22 This is a side cross-sectional view of the ground air supply box in another embodiment of this application;

[0051] Figure 23 This is a top view of the ground air supply box in one embodiment of this application.

[0052] Reference table for attached figures:

[0053] 1. Top cover; 2. Box body; 3. Air inlet;

[0054] Air outlet 4: Air outlet panel 41, air outlet hole 411

[0055] First connecting component 5: First hook 51;

[0056] Second connecting component 6: Second hook 61;

[0057] Locking component 7: first locking hole 71, second locking hole 72, locking element 73;

[0058] Air control component 8: air control port 81, air vent 82, sliding plate 83;

[0059] Fresh air duct 9. Detailed Implementation

[0060] The specific embodiments of this application will be further described below with reference to the accompanying drawings.

[0061] It is readily understood that, based on the technical solution of this application, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this application. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this application and should not be considered as the entirety of this application or as limitations or restrictions on the technical solution of the application.

[0062] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meanings of the above in this application according to the specific circumstances.

[0064] like Figures 1-4 , Figures 6-17 , Figures 19-22 As shown, a ground air supply box in one embodiment of this application includes an upper cover 1, a box body 2 and an air inlet 3. The air inlet 3 is provided on the side plate of the upper cover 1 and / or the box body 2, and the top of the upper cover 1 is provided with an air outlet 4.

[0065] The top cover 1 is provided with a first connecting component 5 arranged along the height direction, and the box body 2 is provided with a second connecting component 6 that can be snapped into the first connecting component 5 and arranged along the height direction. The top cover 1 is detachably installed on the top of the box body 2. The first connecting component 5 can be adjusted to snap into the second connecting component 6 and can drive the top cover 1 to adjust its height.

[0066] In this embodiment, the air inlet 3 is disposed on the side plate of the upper cover 1 and / or the box body 2, and the top of the upper cover 1 is provided with an air outlet 4. The upper cover 1 is provided with a first connecting component 5, and the box body 2 is provided with a second connecting component 6. The first connecting component 5 is arranged along the height direction, and the second connecting component 6 can be engaged with the first connecting component 5 and arranged along the height direction. The upper cover 1 is adjustablely engaged with the second connecting component 6 through the first connecting component 5, thereby being detachably installed on the top of the box body 2. The first connecting component 5 and the second connecting component 6 can also drive the upper cover 1 to adjust its height.

[0067] Specifically, the first connecting component 5 of the upper cover 1 can be snapped onto the second connecting component 6 at different heights, thereby adjusting the height of the upper cover 1 to achieve the function of adjusting the height of the ground air supply box. The snap-fit ​​design of the first connecting component 5 and the second connecting component 6 allows the height of the upper cover 1 to be adjusted according to actual needs, meeting the usage requirements of different occasions, with higher flexibility. Furthermore, the detachability makes the installation and maintenance of this equipment more convenient. Workers can easily assemble and disassemble it, simplifying the installation process and facilitating the cleaning and replacement of internal components, thereby extending the service life of the equipment.

[0068] like Figures 1-4 , Figure 6 , Figure 8 , Figures 14-17 As shown, in one embodiment, the first connecting component 5 includes a plurality of first hooks 51, and the second connecting component 6 includes a plurality of second hooks 61.

[0069] Each first hook 51 is horizontally set on the side plate of the upper cover 1 and arranged along the height direction.

[0070] Each second hook 61 is horizontally set on the side plate of the box body 2 and arranged along the height direction.

[0071] The first hook 51 can be adjusted to engage with the second hook 61, and can drive the upper cover 1 to adjust its height.

[0072] In this embodiment, the first connecting component 5 includes multiple first hooks 51, and the second connecting component 6 includes multiple second hooks 61. Each first hook 51 is horizontally disposed on the side plate of the upper cover 1 and arranged along the height direction, and each second hook 61 is horizontally disposed on the side plate of the box body 2 and arranged along the height direction. The first hooks 51 can be adjusted to engage with the second hooks 61, and can drive the upper cover 1 to adjust its height.

[0073] Specifically, the interlocking of multiple first hooks 51 and multiple second hooks 61 allows the top cover 1 to be fixed at different heights. Staff can flexibly adjust the height of the ground air supply box according to actual needs, adapting to different installation environments and usage requirements, thus improving the applicability of the ground air supply box.

[0074] Furthermore, both the first hook 51 and the second hook 61 are arranged horizontally and along the height direction, ensuring a stable connection between the top cover 1 and the box body 2, increasing the stability and durability of the overall structure, making the ground air supply box safer and more reliable during use. Moreover, during assembly and disassembly, users can easily adjust the height without using additional tools, which not only improves the convenience of installation and maintenance but also reduces time and labor costs.

[0075] like Figures 1-3 , Figures 6-8 , Figures 13-16 As shown, in one embodiment, the first hook 51 is positioned downwards and the second hook 61 is positioned upwards.

[0076] In this embodiment, the first hook 51 is set downwards and the second hook 61 is set upwards. This is because the upper cover 1 is detachably installed on the top of the box body 2. This interlocking design ensures a firm connection between the upper cover 1 and the box body 2. Even when adjusting the height, the upper cover 1 and the box body 2 can still maintain a stable connection, avoiding loosening or falling off, and increasing the safety and stability of the ground air supply box.

[0077] like Figure 4 , Figure 5 , Figure 11 , Figure 17 , Figure 18 , Figure 21 As shown, in another embodiment, a locking component 7 is also included. The locking component 7 includes a plurality of first locking holes 71 disposed on the side plate of the upper cover 1, a second locking hole 72 disposed on the side plate of the box body 2, and a locking member 73.

[0078] Multiple first locking holes 71 are arranged parallel to each other and spaced apart along the height direction.

[0079] When the top cover 1 is locked to the box body 2, one of the first locking holes 71 and the second locking hole 72 are aligned, and the locking member 73 passes through one of the first locking holes 71 and the second locking hole 72.

[0080] In this embodiment, the ground air supply box also includes a locking component 7, which includes a plurality of first locking holes 71, second locking holes 72, and locking elements 73. The plurality of first locking holes 71 are disposed on the side plate of the upper cover 1, and the second locking holes 72 are disposed on the side plate of the box body 2. The plurality of first locking holes 71 are parallel to each other and spaced apart along the height direction. When the upper cover 1 and the box body 2 are locked, one of the first locking holes 71 and the second locking hole 72 are aligned, and the locking element 73 passes through this first locking hole 71 and the second locking hole 72, thereby locking the upper cover 1 and the box body 2.

[0081] Specifically, the locking component 7 makes the height adjustment process more reliable, achieving a stable lock between the top cover 1 and the box 2, preventing height changes or loosening caused by vibration or other external forces during use, ensuring stable operation of the equipment. Furthermore, through the locking component 7, the height of the top cover 1 can be adjusted and fixed more precisely, and users can select the appropriate locking hole position according to the on-site construction needs, improving the applicability of the ground air supply box.

[0082] like Figure 1 , Figures 6-10 , Figure 12 , Figure 13 , Figure 16 , Figure 19 , Figure 20 , Figure 22 As shown, in another embodiment, a wind control component 8 is also included, which is used to adjust the air intake area of ​​the air inlet 3.

[0083] When the first connecting component 5 is located on the inner side of both end panels of the top cover 1, and the second connecting component 6 is located on the outer side of both end panels of the box body 2,

[0084] The air inlet 3 is located on the side panel of the top cover 1, and the air control component 8 is located on the side panel of the box body 2.

[0085] When the first connecting component 5 is located on the outer side of both end plates of the top cover 1, and the second connecting component 6 is located on the inner side of both end plates of the box body 2,

[0086] The air inlet 3 is located on the side panel of the box body 2, and the air control component 8 is located on the side panel of the top cover 1.

[0087] In this embodiment, the ground air supply box also includes an air control component 8, which is used to adjust the air intake area of ​​the air inlet 3. In other words, the air supply port can adjust the air intake volume of the air inlet 3, thereby effectively controlling the air supply effect.

[0088] When the first connecting component 5 is located on the inner side of the two end side plates of the top cover 1 and the second connecting component 6 is located on the outer side of the two end side plates of the box body 2, the air inlet 3 is located on the side plate of the top cover 1 and the air control component 8 is located on the side plate of the box body 2. This is because the top cover 1 covers the box body 2 at this time. If the air inlet 3 is located on the box body 2, the top cover 1 will block the air inlet 3 of the box body 2 when adjusting the height of the ground air supply box. Therefore, the air inlet 3 is located on the side plate of the top cover 1 and the air control component 8 is located on the side plate of the box body 2. At this time, adjusting the height of the ground air supply box will not affect the connection of the air inlet 3.

[0089] Similarly, when the first connecting component 5 is located on the outer side of the two end side plates of the top cover 1 and the second connecting component 6 is located on the inner side of the two end side plates of the box body 2, the air inlet 3 is located on the side plate of the box body 2 and the air control component 8 is located on the side plate of the top cover 1. At this time, the box body 2 wraps around the top cover 1, and adjusting the height of the ground air supply box will not affect the connection of the air inlet 3. This design layout is reasonable and makes it easy for users to control the air intake by adjusting the air control component 8, while ensuring a stable connection between the top cover 1 and the box body 2 and the convenience of height adjustment.

[0090] like Figure 6 , Figure 7 As shown, in one embodiment, the air control component 8 includes an air control port 81, which is located on the same vertical line as the air inlet 3. The air inlet 3 can overlap or separate from the air control port 81 as the upper cover 1 is adjusted up and down.

[0091] In this embodiment, the air control component 8 includes an air control port 81, which is used to control the air intake area of ​​the air inlet 3. The air control port 81 and the air inlet 3 are on the same vertical line. When the upper cover 1 is adjusted up and down, the air inlet 3 will overlap or separate from the air control port 81 as the upper cover 1 is adjusted up and down.

[0092] Specifically, the size of the air control port 81 can be slightly smaller than that of the air inlet 3. When the air inlet 3 and the air control port 81 are separate, the air intake area is the largest, which is suitable for occasions that require a large amount of air supply. When the air inlet 3 and the air control port 81 partially or completely overlap, the air supply area is reduced, which is suitable for situations that require reduced air supply. This improves the flexibility of the floor air supply box and can be adapted to various usage scenarios to provide the best air supply effect.

[0093] like Figure 1 , Figure 6 , Figures 7-10 , Figure 12 , Figure 13 , Figure 16 , Figure 19 , Figure 22 As shown, in another preferred embodiment, the air control component 8 includes an air vent 82 and a sliding plate 83.

[0094] When the air vent 82 is located on the side panel of the box body 2, the air vent 82 extends vertically upward to the top of the side panel of the box body 2, and the sliding plate 83 is slidably located on the inner side of the side panel of the box body 2 and can block the air vent 82.

[0095] When the air vent 82 is located on the side plate of the upper cover 1, the air vent 82 extends vertically downward to the bottom of the side plate of the upper cover 1, and the sliding plate 83 is slidably located on the inner side of the side plate of the upper cover 1 and can block the air vent 82.

[0096] In this preferred embodiment, the air control component 8 includes an air hole 82 and a sliding plate 83. The air hole 82 is used to provide an air intake channel, while the sliding plate 83 is used to adjust the opening of the air hole 82, thereby controlling the air intake volume.

[0097] When the air vent 82 is located on the side panel of the box body 2, the air vent 82 extends vertically upward to the top of the side panel of the box body 2. The sliding plate 83 is slidably located on the inside of the side panel of the box body 2 and can block the air vent 82, ensuring precise control of the air intake volume, so that the user can adjust the air intake volume according to the air volume requirements.

[0098] When the air vent 82 is located on the side plate of the upper cover 1, the air vent 82 extends vertically downward to the bottom of the side plate of the upper cover 1, and the sliding plate 83 is slidably located on the inner side of the side plate of the upper cover 1 and can block the air vent 82.

[0099] Specifically, the air vent 82 can overlap or separate from the air control port 81 as the upper cover 1 is adjusted up and down. When the air vent 82 overlaps with the air control port 81, the sliding plate 83 can slide inside the air vent 82 to adjust the size of the air inlet 3.

[0100] When the air vent 82 does not coincide with the air control port 81, the sliding plate 83 can slide from inside the air vent 82 to outside the air vent 82, thereby extending to the air inlet 3 and adjusting the size of the air inlet 3. Whether a large amount of air needs to be supplied or the air supply needs to be reduced, the user can achieve this by adjusting the sliding plate 83, which improves the flexibility of the ground air supply box, making it more applicable in practical applications and meeting the needs of more usage scenarios.

[0101] like Figure 23 As shown, in another embodiment, an air outlet panel 41 is provided at the air outlet 4, and the air outlet panel 41 includes a plurality of air outlet holes 411.

[0102] In this embodiment, an air outlet panel 41 is provided at the air outlet 4, and the air outlet panel 41 includes multiple air outlet holes 411. This design can effectively distribute air evenly, avoid excessive local airflow caused by a single large air outlet, and can also prevent dust and debris from entering the air duct under certain circumstances, keep the air supply system clean and efficient, improve the air supply effect, ensure the uniform flow and distribution of indoor air, and thus improve the comfort of the indoor environment.

[0103] In one embodiment, a sealing ring is provided at the connection between the top cover 1 and the box body 2.

[0104] In this embodiment, a sealing ring is provided between the connection between the top cover 1 and the box body 2, which can effectively prevent air leakage, ensure the airtightness and efficient operation of the air supply system, improve the air supply effect, reduce energy loss, improve the energy utilization efficiency of the equipment, prevent external pollutants from entering the air supply system, keep the inside of the equipment clean, reduce maintenance and cleaning efficiency, and reduce the user's maintenance costs and workload.

[0105] Meanwhile, the sealing ring also improves the stability of the air supply box. The sealing ring is set at the connection between the upper cover 1 and the box body 2, which can effectively reduce the vibration of the connection part, thereby ensuring the reliability of the equipment in long-term use and improving the safety and service life of the equipment.

[0106] like Figure 4 , Figure 9 , Figure 11 , Figure 12 , Figure 17 , Figure 19 , Figure 21 , Figure 22 As shown, this application also provides a ground air supply system, including a fresh air duct 9 and a ground air supply box as described above, wherein the fresh air duct 9 is connected to the air inlet 3 of the ground air supply box.

[0107] In this embodiment, the ground air supply system includes a fresh air duct 9 and a ground air supply box as described above. The fresh air duct 9 is connected to the air inlet 3 of the ground air supply box, which can effectively introduce and distribute fresh air, improve the efficiency and effect of the air supply system, avoid air stagnation, and the height-adjustable ground air supply box makes the ground air supply system more flexible, easier to install and maintain, and also improves the user experience and applicability.

[0108] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0109] The above description is merely the principle and preferred embodiment of this application. It should be noted that for those skilled in the art, implementation methods obtained by appropriately combining the technical solutions disclosed in different embodiments are also included within the technical scope of this invention. Based on the principle of this application, several other modifications can also be made, which should also be considered within the protection scope of this application.

Claims

1. A ground-level air supply box, characterized in that, It includes a top cover (1), a box body (2) and an air inlet (3), wherein the air inlet (3) is provided on the side plate of the top cover (1) and / or the box body (2), and the top of the top cover (1) is provided with an air outlet (4). The top cover (1) is provided with a first connecting component (5) arranged along the height direction, and the box body (2) is provided with a second connecting component (6) that can be engaged with the first connecting component (5) and arranged along the height direction. The top cover (1) is detachably installed on the top of the box body (2). The first connecting component (5) is adjustablely engaged with the second connecting component (6) and can drive the top cover (1) to adjust its height.

2. A ground-level air supply box according to claim 1, characterized in that, The first connecting component (5) includes multiple first hooks (51), and the second connecting component (6) includes multiple second hooks (61). Each of the first hooks (51) is horizontally set on the side plate of the upper cover (1) and arranged along the height direction; Each of the second hooks (61) is horizontally arranged on the side plate of the box (2) and arranged along the height direction; The first hook (51) is adjustablely engaged with the second hook (61) and can drive the upper cover (1) to adjust its height.

3. A ground-level air supply box according to claim 2, characterized in that, The first hook (51) is positioned downwards, and the second hook (61) is positioned upwards.

4. A ground-level air supply box according to claim 2, characterized in that, It also includes a locking component (7), which includes a plurality of first locking holes (71) provided on the side plate of the upper cover (1), a second locking hole (72) provided on the side plate of the box body (2), and a locking member (73). The plurality of first locking holes (71) are arranged parallel to each other and spaced apart along the height direction; When the top cover (1) is locked to the box body (2), one of the first locking holes (71) is aligned with the second locking hole (72), and the locking member (73) passes through one of the first locking holes (71) and the second locking hole (72).

5. A ground-level air supply box according to claim 1, characterized in that, It also includes a wind control component (8), which is used to adjust the air intake area of ​​the air inlet (3); When the first connecting component (5) is disposed on the inner side of the two end side plates of the upper cover (1), and the second connecting component (6) is disposed on the outer side of the two end side plates of the box body (2), The air inlet (3) is located on the side panel of the upper cover (1), and the air control assembly (8) is located on the side panel of the box body (2); When the first connecting component (5) is disposed on the outer side of the two end side plates of the upper cover (1), and the second connecting component (6) is disposed on the inner side of the two end side plates of the box body (2), The air inlet (3) is located on the side panel of the box body (2), and the air control component (8) is located on the side panel of the upper cover (1).

6. A ground-level air supply box according to claim 5, characterized in that, The air control component (8) includes an air control port (81), which is located on the same vertical line as the air inlet (3). The air inlet (3) can overlap or separate from the air control port (81) as the upper cover (1) is adjusted up and down.

7. A ground-level air supply box according to claim 5, characterized in that, The air control component (8) includes an air vent (82) and a sliding plate (83); When the air vent (82) is located on the side plate of the box body (2), the air vent (82) extends vertically upward to the top of the side plate of the box body (2), and the sliding plate (83) is slidably located on the inner side of the side plate of the box body (2) and can block the air vent (82). When the air hole (82) is located on the side plate of the upper cover (1), the air hole (82) extends vertically downward to the bottom of the side plate of the upper cover (1), and the sliding plate (83) is slidably located on the inner side of the side plate of the upper cover (1) and can block the air hole (82).

8. A ground-level air supply box according to claim 1, characterized in that, An air outlet panel (41) is provided at the air outlet (4), and the air outlet panel (41) includes a plurality of air outlet holes (411).

9. A ground-level air supply box according to any one of claims 1-8, characterized in that, A sealing ring is provided at the connection between the top cover (1) and the box body (2).

10. A ground-level air supply system, characterized in that, It includes a fresh air duct (9) and a ground air supply box as described in any one of claims 1-9, wherein the fresh air duct (9) is connected to the air inlet (3) of the ground air supply box.

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