A data center cold aisle distributed air cooling method

Abstract

The application discloses a data center cold aisle distribution type air cooling method, cold air enters a cold aisle from a cold air outlet of a floor below the cold aisle and then flows horizontally through a cabinet, and the cabinet is cooled; the cold air is guided into a corresponding space region of the cabinet to cool servers; the cold aisle is internally provided with a flow guide member in a whole inverted L-shaped side, which is suspended above each row of partitions and guides the cold air into the corresponding space region of the cabinet to cool the servers; and the cold aisle can be adjusted and optimized to improve the cooling balance of the servers at upper and lower positions of the cabinet.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of data center server room, and particularly relates to a data center cold aisle cold air flow control method. BACKGROUND

[0002] The server in the data center room generates a lot of heat when working, and in order to ensure the working efficiency of the server, cooling measures are needed to cool and dissipate heat. The cold / hot aisle closed system is a heat dissipation technology designed for data center rooms, which improves the heat dissipation efficiency by physically isolating the cold air channel at the front end of the cabinet from the hot air channel at the rear end. The core principle is to separate the cold air channel at the front end of the cabinet from the hot air channel at the rear end, and the cold air directly flows into the cabinet from the cold air outlet at the bottom of the cold aisle, and then the heat exchange cooling of the server is realized. The hot air formed then penetrates into the hot aisle from the other side of the server cabinet, and then is discharged through the exhaust channel above the hot aisle. In this way, the energy waste caused by the mixing of cold and hot air is avoided, and the cold air utilization efficiency is good.

[0003] In the conventional cold aisle structure, the cold air flow is difficult to control effectively. The servers on the cabinet in the cold aisle are arranged in a horizontal row, so the servers in the space below the cabinet are close to the cold air outlet position of the cold aisle bottom plate, and the cold air inflow is more, while the servers in the space above the cabinet are far from the air flow end, and the cold air inflow is less. It is difficult to ensure the balance of the cooling effect of the servers in the cold aisle.

[0004] CN202510851484.9 once disclosed a kind of air flow distribution vertical blind plate for closed cold aisle, belonging to the technical field of cabinet. It includes cold aisle cabinet and precision air conditioner placed in cold aisle cabinet, and further includes: vertical blind plate, a plurality of air ports are formed on the body of vertical blind plate;Air port adjusting plate, the air port adjusting plate is movably arranged on the body of vertical blind plate, and is used to adjust the opening area of the air port. In single-row cold aisle, network wiring cabinet is generally arranged on one side or both sides of the whole row of cold aisle cabinets. By adding a vertical blind plate between the server cabinet and the network wiring cabinet, the cold air flow into the network wiring cabinet can be adjusted. In double-row cold aisle, a closed front door can be installed on the network wiring cabinet, and then a vertical blind plate can be added between the server cabinet and the network wiring cabinet to adjust the cold air flow into the network wiring cabinet, so as to achieve the purpose of energy saving. However, this technology is more suitable for shielding the space when no server is installed in the row. If this technology is used to control the air flow into each row of space in a semi-shielded manner, it will not only cause the servers in the shielded area to form dead angles, which is not conducive to the overall cold air effect of the servers, but also increase the wind resistance of the blind plate, which increases the energy consumption of the additional fan. At the same time, this method has no control or improvement effect on the air flow organization in the cold aisle.

[0005] Therefore, how to better adjust the air flow distribution in the cold aisle to enhance the cooling balance of the servers at different positions on the cabinet and improve the cooling balance effect is a long-term consideration for those skilled in the art. SUMMARY

[0006] In view of the above problems of the prior art, the technical problem to be solved by the present application is to provide a data center cold aisle distribution air cooling method capable of adjusting and optimizing the air flow distribution in the cold aisle and better improving the cooling balance effect of the servers at different positions on the cabinet.

[0007] In order to solve the above technical problems, the present application adopts the following technical solutions:

[0008] A data center cold aisle distribution air cooling method, cold air enters the cold aisle from the cold air outlet of the floor below the cold aisle and then flows horizontally through the cabinet to cool the servers between the partitions of the cabinet, characterized in that, in the internal space of the cold aisle, a flow guide member with an overall inverted L-shaped side is suspended above each row of partitions, and the positions of the flow guide members are gradually arranged from close to the cabinet to far away from the cabinet from bottom to top, guiding and distributing the cold air in the corresponding space area into the corresponding area between the partitions of the cabinet to cool the servers.

[0009] In this way, the present method can control the cold air in the corresponding specific area outside each row of partitions in the cold aisle to enter the area to cool the servers; therefore, the disordered state of the cold air in the existing cold aisle is changed, the controllable inflow of the cold air is realized, and the cooling balance effect of the servers in the area between the partitions at different positions on the cabinet is better ensured.

[0010] As an optimization of the present method, the temperature inside the area between the adjacent partitions is further detected, and for the area with higher temperature, the horizontal distance between the two flow guide members corresponding to the upper and lower partitions of the area is increased to introduce more cold air into the area to cool the servers therein.

[0011] In this way, for the area position with higher temperature and more cooling air flow, more range of external cold air can be controlled to flow in to achieve cooling, thereby better improving the balanced cooling effect of the servers at different positions on the cabinet.

[0012] Further, the method relies on a data center cold aisle system, which comprises a cold aisle formed between two rows of cabinets horizontally spaced apart, a cold air outlet uniformly distributed on the floor below the cold aisle and connected with a cold air inlet passage below the floor, and a top plate connected and arranged on the top of the two side cabinets above the cold aisle, wherein each horizontal partition plate on the corresponding cabinet in the cold aisle is further provided with a horizontal control type air inlet flow guide device, the air inlet flow guide device comprises a flow guide member with an overall inverted L-shaped side (i.e. one of the structural forms of the flow guide member), which is made of sheet material and has a transverse end facing the horizontal partition plate and a vertical end located downward in the outward direction of the transverse end, and the horizontal distance between each flow guide member from bottom to top and the corresponding cabinet gradually increases; each flow guide member is fixedly connected with the cabinet by a transverse connecting rod arranged on both sides of the length direction of the horizontal end of the flow guide member.

[0013] In this way, the cold air uniformly enters the cold aisle from the bottom floor, is distributed by the flow guide member, and is controllably introduced into the cabinet in different partition plate areas, so that the cooling balance effect of the servers in the partition plate areas at different positions on the cabinet is better improved. The flow guide member is fixedly connected with the cabinet by the transverse connecting rod, which has a simple structure and is convenient to implement.

[0014] Further, the length of the flow guide member in the length direction (the length direction of the cabinet) is consistent with the length of the corresponding cabinet. In this way, the overall cooling effect of the cabinet is better achieved.

[0015] Further, the horizontal distance ratio between each adjacent flow guide member is consistent with the vertical distance ratio between each adjacent partition plate.

[0016] In this way, for the cabinet with partition plates not evenly distributed, the higher the interval between adjacent partition plates, the larger the corresponding cold air introduction area, and the better the cooling balance adjustment.

[0017] Further, the flow guide member is made of sheet material with an arc-shaped transition connection between the transverse end and the vertical end.

[0018] This is beneficial to manufacturing and can better guide the air flow and reduce wind loss.

[0019] Further, the transverse connecting rod is an electric telescopic cylinder.

[0020] Thus, the horizontal distance between the adjacent guide members corresponding to the upper and lower partitions of the space with higher temperature can be increased, and the horizontal distance between the adjacent guide members corresponding to the upper and lower partitions of the space with lower temperature can be reduced, so that the amount of cold air entering the space between the partitions of the cabinet can be adjusted, and the cabinet can be better matched with the server, and the cooling balance can be improved. Further, temperature probes are arranged between the partitions in the cabinet, the temperature probes are connected to the control center, the control center is connected to the electric telescopic cylinder, and the automatic control program is built in the control center to realize automatic control of the above process, so that the automation efficiency is improved. In addition, when a person enters the cold aisle, the horizontal connecting rod can be automatically retracted to avoid interfering with manual operation.

[0021] As another optimization of the method, the temperature inside the region between the adjacent partitions is further detected, and for the region with higher temperature, the horizontal end of the guide member corresponding to the lower partition of the region is tilted upward, and part of the cold air below the guide member is introduced into the region to cool the server in the region.

[0022] Thus, for the region with higher temperature and more cooling air flow, more external cold air can be introduced to cool, and the balanced cooling effect of the servers at the upper and lower positions of the cabinet can be further improved.

[0023] Further, the method is implemented by a data center cold aisle system, the data center cold aisle system comprising a cold aisle formed between two rows of cabinets horizontally spaced apart, a cold air outlet and a cold air inlet passage below the floor being connected, the cold air outlet being uniformly distributed on the floor below the cold aisle, a top plate being connected and arranged on the top of the cabinets on both sides above the cold aisle, wherein each horizontal partition on the corresponding cabinet in the cold aisle is further provided with a vertical control type air inlet guide device, the air inlet guide device comprising a whole side inverted L-shaped guide assembly (i.e. a structural form of the guide member), the guide assembly having a horizontal guide plate opposite to the horizontal partition and a vertical guide plate located at the distal end of the horizontal guide plate, the two ends of the horizontal guide plate and the vertical guide plate along the length direction being respectively hung upward on the cross beam above the cold aisle through a pull wire, the horizontal guide plate and the vertical guide plate being connected through a flexible film, and the horizontal distance between each guide assembly and the corresponding cabinet gradually increases from bottom to top.

[0024] Thus, the cold air uniformly enters the cold aisle from the bottom floor, is distributed and diverted by the guide assembly, and is controllably introduced into the cabinet in the region of each partition, so that the balanced cooling effect of the servers in the region of each partition at the upper and lower positions of the cabinet is improved. The horizontal guide plate and the vertical guide plate of the guide assembly are respectively connected to the cross beam through the pull wire, and the structure is simple and convenient for controlling the guide assembly.

[0025] Further, the flow guide assembly is consistent with the length of the corresponding cabinet in the length direction (the length direction of the cabinet). This better achieves the overall cooling effect on the cabinet.

[0026] Further, the horizontal distance ratio between each adjacent flow guide assembly is consistent with the vertical distance ratio between the corresponding adjacent partitions.

[0027] In this way, for some cabinets that are not evenly distributed with partitions, the higher the spacing between adjacent partitions in a region, the larger the corresponding region of the imported cold air, and better cooling balance adjustment is achieved.

[0028] Further, the two ends of the transverse flow guide plate along the length direction are each spaced apart by two transverse flow guide plate pull lines in the direction away from the cabinet, the upper ends of the two transverse flow guide plate pull lines at each end are respectively connected to a corresponding circular winding disc arranged vertically, each circular winding disc is mounted on a circular winding disc motor output shaft arranged horizontally on the cross beam; the upper end of the flexible film is fixedly connected to the end of the transverse flow guide plate away from the cabinet in the horizontal direction, and the lower end is fixedly connected to the middle of the surface of the vertical flow guide plate on the side facing the cabinet, the two ends of the surface of the vertical flow guide plate away from the cabinet are each connected to a vertical flow guide plate pull line outward and upward at the upper and lower positions of the flexible film, the upper ends of the two vertical flow guide plate pull lines at each end are connected to the two ends of a vertically arranged long strip-shaped winding plate and form a parallelogram, and the middle position of the long strip-shaped winding plate is mounted on a long strip-shaped winding plate motor output shaft arranged horizontally on the cross beam.

[0029] In this way, when someone enters the cold aisle, the motor drives the winding reel to rotate, simultaneously pulling up the horizontal and vertical air guides, avoiding interference with manual operation. More importantly, different motors can drive different winding reels to rotate, allowing control over the tilt angle of the horizontal and vertical air guides, thus better adjusting the airflow between the rack shelves. Specifically, for spaces with higher temperatures, the horizontal air guide of the upper shelf corresponding to that space can be tilted downwards near the rack to guide some of the upper airflow into the space, improving cooling efficiency; similarly, the horizontal air guide of the lower shelf corresponding to that space can be tilted upwards near the rack to guide some of the lower airflow into the space, improving cooling efficiency; furthermore, the lower end of the vertical air guide of the upper shelf corresponding to that space can be tilted away from the rack, while the lower end of the vertical air guide of the lower shelf corresponding to that space can be tilted closer to the rack, further expanding the area where cold air enters and increasing the amount of cold air introduced into the space to improve cooling efficiency. Therefore, airflow regulation can be better achieved to improve the heat dissipation uniformity between the partitions. Furthermore, temperature probes are installed between the partitions inside the cabinet, and each temperature probe is connected to the control center. The control center is connected to the circular winding disc motor and the elongated winding plate motor, and the control center has a built-in automation control program to automatically control the above processes, thus further improving automation efficiency.

[0030] In summary, the present invention has the advantage of being able to adjust and optimize the airflow distribution inside the cold aisle, thereby improving the cooling balance of servers located above and below the rack. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of a single-sided structure (only one side of the cabinet) of the data center cold aisle system in Embodiment 1 of the present invention.

[0032] Figure 2 This is a schematic diagram of a single-sided structure (only one side of the cabinet) of the data center cold aisle system in Embodiment 2 of the present invention.

[0033] Figure 3 for Figure 2 A three-dimensional structural diagram of the individual flow guiding component.

[0034] Figure 4 for Figure 2 A schematic diagram of a single air intake guide device.

[0035] Figure 5 for Figure 4 A top view of a single side beam.

[0036] Figure 6The adjustment orientation schematic view of the flow guide assembly corresponding to the upper space partition plate with higher temperature in the embodiment 2 of the present application.

[0037] Figure 7 The adjustment orientation schematic view of the flow guide assembly corresponding to the lower space partition plate with higher temperature in the embodiment 2 of the present application. DETAILED DESCRIPTION

[0038] The present application will be further described in detail below with specific embodiments.

[0039] Embodiment 1: a data center cold aisle distribution type air cooling method, cold air enters the cold aisle from the cold air outlet of the floor below the cold aisle, and then flows horizontally through the cabinet, realizing the cooling of the servers between the partition plates of each row of cabinets, characterized in that, in the internal space of the cold aisle, a flow guide piece with an overall inverted L-shaped side is suspended above each row of partition plates, and the positions of the flow guide pieces are gradually arranged from close to the cabinet to far away from the cabinet from bottom to top, guiding the cold air in the corresponding space area to enter the area between the corresponding rows of partition plates on the cabinet to realize the cooling of the servers.

[0040] In this way, the present method can control the cold air in the corresponding specific area outside each row of partition plates in the cold aisle to enter the area to realize the cooling of the servers; therefore, the disorderly state of the cold air in the existing cold aisle is changed, realizing the controllable inflow of the cold air, and better ensuring the balanced cooling effect of the servers in the area of each row of partition plates on the cabinet.

[0041] In the present embodiment, the temperature inside the area between adjacent partition plates is detected, and for the area with higher temperature, the horizontal distance between the two flow guide pieces corresponding to the upper and lower partition plates of the area is increased, so that more cold air is introduced into the area to realize the cooling of the servers in the area.

[0042] In this way, for the area position with higher temperature and more cooling air flow, more range of external cold air flow can be controlled to realize cooling, thereby better improving the balanced cooling effect of the servers on the cabinet.

[0043] In the present embodiment, the present method is realized by a data center cold aisle system, and the data center cold aisle system is described as follows. Figure 1, including the cold aisle 2' formed between two horizontally spaced rows of cabinets 1', the cold aisle is connected with the cold air outlet and the cold air inlet channel under the floor (not shown) evenly distributed on the floor below, the top plate 3' is connected and arranged on the top of the two side cabinets above the cold aisle, and the horizontal control type air inlet guide device is further arranged on each horizontal partition 6' on the cabinet in the cold aisle, the air inlet guide device includes a whole side inverted L-shaped guide member 4' (which is one of the structural forms of the guide member), the guide member is a sheet material and has a transverse end facing the horizontal partition and a vertical end located downward in the outward direction of the transverse end, the horizontal distance between each guide member from bottom to top and the corresponding cabinet gradually increases; each guide member 4' is provided with a transverse connecting rod 5' and a cabinet fixedly connected on both sides of the length direction of the horizontal end.

[0044] In this way, the cold air uniformly enters the cold aisle from the bottom plate, is distributed by the guide member, and is controllably introduced into the cabinet in the different partition area, so that the cooling balance effect of the server in each row of partition areas on the cabinet is better improved. The guide member is fixedly connected with the cabinet through the transverse connecting rod, and the structure is simple and convenient to implement.

[0045] In the embodiment, the guide member 4' is consistent with the length of the corresponding cabinet in the length direction (the length direction of the cabinet). In this way, the overall cooling effect of the cabinet is better realized.

[0046] In the embodiment, the horizontal distance ratio between each adjacent guide member is consistent with the vertical distance ratio between each adjacent partition.

[0047] In this way, for the cabinet which is not evenly distributed with partitions, the area corresponding to the imported cold air corresponding to the higher area between the adjacent partitions is larger, and the cooling balance adjustment is better realized.

[0048] In the embodiment, the guide member 4' is a sheet material with an arc-shaped transition connection between the transverse end and the vertical end.

[0049] In this way, it is beneficial to manufacturing, and the air flow can be better guided, and the wind loss is reduced.

[0050] In the embodiment, the transverse connecting rod 5' is an electric telescopic cylinder.

[0051] Thus, the horizontal distance between the adjacent guide members can be adjusted by the extension and contraction of the horizontal connecting rods, so that the horizontal distance between the guide members corresponding to the upper and lower partitions of the space with higher temperature is increased, and the horizontal distance between the guide members corresponding to the upper and lower partitions of the space with lower temperature is decreased. Thus, the amount of cold air entering the space between the partitions of each row of the cabinet can be adjusted, so as to better match the server conditions and improve the cooling uniformity. In the embodiment, temperature probes are arranged between the partitions in the cabinet, the temperature probes are connected to the control center, the control center is connected to the electric telescopic cylinders, and the control center is internally provided with an automatic control program to realize automatic control of the above process, so as to better improve the automation efficiency. In addition, when a person enters the cold aisle, the horizontal connecting rods can be automatically retracted to avoid interfering with manual operation.

[0052] Embodiment 2: A data center cold aisle distribution type air cooling method, in which cold air enters the cold aisle from the cold air outlet of the floor below the cold aisle and then flows horizontally through the cabinet to cool the servers between the partitions of each row of the cabinet. The feature is that in the internal space of the cold aisle, a guide member with an overall inverted L-shaped side is suspended above each row of partitions, and the positions of the guide members are gradually arranged from the lower to the upper position, from the position close to the cabinet to the position away from the cabinet, to guide and distribute the cold air in the corresponding space region into the region between the corresponding partitions of the cabinet to cool the servers.

[0053] In the embodiment, the temperature in the region between the adjacent partitions is detected, and for the region with higher temperature, the horizontal end of the guide member corresponding to the lower partition of the region is inclined upward to introduce part of the cold air below the guide member into the region to cool the servers in the region.

[0054] Thus, for the region with higher temperature and more cooling air flow, more external cold air flow can be controlled to enter the region to cool, so as to better improve the uniform cooling effect of the servers at the upper and lower positions of the cabinet.

[0055] In the embodiment, the method is implemented by a data center cold aisle system, and the data center cold aisle system is described with reference to Figures 2-7As shown, it comprises a cold channel 2 formed between two rows of cabinets 1 horizontally spaced apart, a cold air outlet and a cold air inlet passage under the floor are connected (not shown in the figure) uniformly distributed on the floor under the cold channel 2, and a top plate 3 is connected and arranged on the top of the two cabinets on the upper side of the cold channel. Among them, the cold channel 2 is provided with a vertical control type air inlet flow guide device corresponding to each horizontal partition 6 on the cabinet 1, the air inlet flow guide device comprises a whole side inverted L-shaped flow guide assembly (that is, one of the above-mentioned flow guide structures), the flow guide assembly has a transverse flow guide plate 4 facing the horizontal partition and a vertical flow guide plate 5 located at the distal end of the transverse flow guide plate, the two ends of the transverse flow guide plate 4 and the vertical flow guide plate 5 are respectively hung upward on the cross beam 15 above the cold channel through the pull wire, the transverse flow guide plate 4 and the vertical flow guide plate 5 are connected by a flexible film 7, and the horizontal distance between each flow guide assembly and the corresponding cabinet gradually increases from bottom to top.

[0056] In this way, the cold air uniformly enters the cold channel from the bottom plate, is guided and distributed by the flow guide assembly, and is controllably introduced into the cabinet in different partition areas, which better improves the cooling balance effect of the servers in the partition areas of the cabinet at different positions. The transverse flow guide plate and the vertical flow guide plate of the flow guide assembly are connected to the cross beam by the pull wire, which is simple in structure and convenient to control the flow guide assembly.

[0057] In this embodiment, the flow guide assembly is consistent with the length of the corresponding cabinet in the length direction (the length direction of the cabinet). In this way, the overall cooling effect of the cabinet is better achieved.

[0058] In this embodiment, the horizontal distance ratio between each adjacent flow guide assembly is consistent with the vertical distance ratio between each adjacent partition.

[0059] In this way, for the cabinet which is not evenly distributed with partitions, the higher the interval between adjacent partitions, the larger the corresponding cold air area, and the better the cooling balance adjustment.

[0060] In the embodiment, the two ends of the transverse guide plate 4 along the length direction are each spaced apart by two transverse guide plate pull wires 8 along the distance from the cabinet direction, the upper ends of the two transverse guide plate pull wires at each end are respectively connected to a corresponding vertically arranged circular winding disc 9, and each circular winding disc 9 is mounted on the output shaft of a circular winding disc motor 10 horizontally arranged on the crossbeam. The upper end of the flexible film 7 is fixedly connected to the end of the transverse guide plate away from the cabinet along the horizontal direction, and the lower end is fixedly connected to the middle of the surface of the vertical guide plate on the side facing the cabinet, and the two ends of the surface of the vertical guide plate 5 away from the cabinet along the length direction are each connected to a vertical guide plate pull wire 11 outward and upward at the upper and lower sides of the flexible film 7, and the upper ends of the two vertical guide plate pull wires 11 at each end are connected to the two ends of a vertically arranged long strip-shaped winding plate 12 and form a parallelogram, and the middle position of the long strip-shaped winding plate 12 is mounted on the output shaft of a long strip-shaped winding plate motor 13 horizontally arranged on the crossbeam 15.

[0061] In this way, when a person enters the cold aisle, the winding disc can be driven to rotate by the motor, and at the same time, the transverse guide plate and the vertical guide plate can be pulled up, so as to avoid interfering with manual operation. More importantly, different winding discs can be driven to rotate by different motors, so as to control the inclination angle of the transverse guide plate and the vertical guide plate, and better adjust the air inlet size between the partitions of the cabinet. Specifically, referring to Figure 6 and Figure 7 For a space with a higher temperature, the end of the transverse guide plate of the guide assembly corresponding to the upper partition of the space close to the cabinet can be adjusted to be inclined downward, so as to guide part of the cold air from above into the space to improve the cooling effect; at the same time, the end of the transverse guide plate of the guide assembly corresponding to the lower partition of the space close to the cabinet can be adjusted to be inclined upward, so as to guide part of the cold air from below into the space to improve the cooling effect; at the same time, the lower end of the vertical guide plate of the guide assembly corresponding to the upper partition of the space can be adjusted to be inclined away from the cabinet, and the lower end of the vertical guide plate of the guide assembly corresponding to the lower partition of the space can be adjusted to be inclined close to the cabinet, so as to better expand the cold air inlet area and improve the cooling effect. Therefore, the air flow can be better adjusted to improve the heat dissipation balance between the partitions. In the embodiment, temperature probes are arranged between the partitions in the cabinet, the temperature probes are connected to a control center, the control center is connected to the circular winding disc motor and the long strip-shaped winding plate motor, and the control center is internally provided with an automatic control program to automatically control the above process. The automation efficiency is better improved.

Claims

1. A data center cold aisle allocation air cooling method, cold air from the cold air outlet of the cold aisle floor below enters the cold aisle upward and then flows horizontally through the cabinet to cool the servers between the partitions of each row of the cabinet, characterized in that, In the cold aisle interior space, one whole side of the inverted L-shaped flow guide is respectively suspended for each row of partitions, and each flow guide is arranged from below to above and from the cabinet to away from the cabinet direction, guiding the cold air in the corresponding space area to enter the area between each row of partitions on the cabinet to cool the server; The temperature inside the area between adjacent partitions is detected, and for the area with higher temperature, the horizontal end of the flow guide corresponding to the lower partition of the area is inclined upward, and part of the cold air below the flow guide is introduced into the area to cool the server inside the area; The method relies on a data center cold aisle system, which includes a cold aisle formed between two rows of horizontally spaced cabinets, a cold air outlet and a cold air inlet passage below the floor are uniformly distributed and connected, and a top plate is connected and arranged on the top of the two side cabinets above the cold aisle, wherein each horizontal partition on the corresponding cabinet in the cold aisle is further provided with a vertical control type air inlet flow guide device, the air inlet flow guide device includes a whole side of the inverted L-shaped flow guide component and constitutes the flow guide, the flow guide component has a transverse flow guide plate opposite the horizontal partition and a vertical flow guide plate located at the distal end of the transverse flow guide plate, the two ends of the transverse flow guide plate and the vertical flow guide plate along the length direction are respectively hung upward on the cross beam above the cold aisle through the pull wire, and the transverse flow guide plate and the vertical flow guide plate are connected by a flexible film, and the horizontal distance between each flow guide component and the corresponding cabinet gradually increases from below to above. The two ends of the transverse flow guide plate along the length direction are respectively arranged with two transverse flow guide plate pull wires in the direction of distance from the cabinet, the upper ends of the two transverse flow guide plate pull wires at the two ends are respectively connected to a corresponding vertically arranged circular winding disc, and each circular winding disc is respectively installed on the circular winding disc motor output shaft horizontally arranged on the cross beam; the upper end of the flexible film is fixedly connected to the end of the transverse flow guide plate away from the cabinet along the horizontal direction, and the lower end is fixedly connected to the middle part of the surface of the vertical flow guide plate on the side facing the cabinet, the two ends of the vertical flow guide plate along the length direction are respectively connected to a vertical flow guide plate pull wire outward and upward at the upper and lower positions of the flexible film, and the upper ends of the two vertical flow guide plate pull wires at the two ends are connected to the two ends of a vertically arranged long strip-shaped winding plate and constitute a parallelogram, and the middle part of the long strip-shaped winding plate is installed on the long strip-shaped winding plate motor output shaft horizontally arranged on the cross beam.

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