BBU equipment cabinet

Abstract

The utility model discloses a BBU equipment cabinet, which relates to the technical field of communication equipment, and comprises a side plate, a plurality of bearing plates are arranged on the inner side of the side plate in an array manner, and the upper and lower adjacent bearing plates form a BBU equipment placement bin; a front cabinet door is arranged on the front side of the side plate, a rear cabinet door is arranged on the rear side of the side plate, and a plurality of heat dissipation holes are formed in the surface of the front cabinet door and the surface of the rear cabinet door in an array mode. The cooling fan is connected with an air pipe, the air pipe is communicated with the interior of the cabinet, and the outer wall of the air pipe is provided with an outer circulation air port. According to the BBU equipment cabinet, the technical problems that an existing BBU equipment cabinet is poor in heat dissipation efficiency and cannot meet the refrigeration requirement of 5G special BBU equipment are solved, heat dissipation holes in the front cabinet door and the rear cabinet door conduct heat dissipation on the interior of the cabinet, meanwhile, a heat dissipation fan exhausts hot air in the cabinet to an air pipe, cold air enters the air pipe to be mixed with the hot air, and the heat dissipation efficiency is improved. And the mixed gas enters the cabinet through the air inlet holes, so that the cooling effect on the BBU equipment is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication equipment technical field, especially a kind of BBU equipment cabinet. BACKGROUND

[0002] 5G special BBU equipment (BBU's English full name is Building Base band Unit, Chinese is indoor baseband processing unit), is the key equipment in mobile communication network, compared with traditional 4G special BBU equipment, 5G special BBU equipment becomes more precise, 5G special BBU equipment unit power increases, and the pooling of 5G equipment is more dense, requires more equipment to be placed in unit space, so higher requirements are put forward to cabinet.

[0003] However, the existing BBU equipment cabinet has poor heat dissipation efficiency, and the heat is internally circulated due to the front and rear doors of the traditional cabinet, which cannot meet the refrigeration requirements of the 5G special BBU equipment, seriously affecting the service life and performance of the equipment. Therefore, a BBU equipment cabinet is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of BBU equipment cabinet, solve the existing BBU equipment cabinet heat dissipation efficiency is poor, and the heat is internally circulated due to the front and rear doors of the traditional cabinet, which cannot meet the refrigeration requirements of the 5G special BBU equipment.

[0005] To achieve the above purpose, the utility model provides a kind of BBU equipment cabinet, comprising:

[0006] The inner side of the side plate is sequentially arrayed with a plurality of bearing plates from top to bottom, and the two adjacent bearing plates form a BBU equipment placing bin.

[0007] The front side of the side plate is provided with a front cabinet door, and the rear side of the side plate is provided with a rear cabinet door, and the surface of the front cabinet door and the surface of the rear cabinet door are arrayed with a plurality of heat dissipation holes.

[0008] Air flow circulation mixing assembly is arranged on the outer side of the front cabinet door, and the air flow circulation mixing assembly comprises:

[0009] A plurality of heat dissipation fans are arrayed on the top of the front cabinet door.

[0010] Air pipe is arranged on the outer side of the front cabinet door, the upper end of the air pipe is connected with the heat dissipation fan, the lower end of the air pipe is provided with an air outlet, the bottom of the front cabinet door is provided with an air inlet, and the air outlet is communicated with the air inlet.

[0011] A plurality of outer circulation air inlets are arrayed on the outer wall of the air pipe.

[0012] Preferably, the inner side of the front cabinet door is sequentially provided with a plurality of first flow guide pipes from bottom to top, a first air inlet and a first air outlet are symmetrically arranged on each of the plurality of first flow guide pipes, the inner side of the rear cabinet door is sequentially provided with a plurality of second flow guide pipes from bottom to top, a second air inlet and a second air outlet are symmetrically arranged on the second flow guide pipes, the first air inlet and the second air outlet are symmetrically arranged on both sides of the side plate, and the second air inlet and the first air outlet are symmetrically arranged on both sides of the side plate.

[0013] Preferably, the inner side of the air pipe is arrayed with a plurality of cooling fins, and the upper end of the air pipe is provided with a lower air outlet located above the cooling fins.

[0014] Preferably, the inner slope plate is rotatably connected at the position of the outer circulating air outlet, and the inner slope plate is arranged on the inner side of the air pipe.

[0015] Preferably, a plurality of strip-shaped holes are arrayed on the bearing plate, and the strip-shaped holes are communicated with two adjacent BBU equipment placing cavities above and below.

[0016] Preferably, a plurality of flow guide slope plates are arrayed on the bearing plate, each of the flow guide slope plates is located above the strip-shaped hole, and the acute angle between the top surface of the flow guide slope plate and the horizontal plane is 5-15°.

[0017] Preferably, the inner wall of the first flow guide pipe and the inner wall of the second flow guide pipe are arc-shaped structures.

[0018] Preferably, the two ends of the first flow guide pipe and the two ends of the second flow guide pipe are provided with flow guide plates.

[0019] Preferably, the side surface of the first flow guide pipe and the side surface of the second flow guide pipe are arrayed with a plurality of mixing ports.

[0020] Preferably, a conical tube is arranged on the outer side of the cooling hole, and the tip of the conical tube faces the interior of the cabinet.

[0021] With respect to the above background technology, the BBU equipment cabinet provided by the present application opens a large number of cooling holes in the front cabinet door and the rear cabinet door, increases the cooling area, avoids the heat internal circulation problem caused by the front and rear doors of the traditional cabinet, realizes more efficient cooling, and at the same time, the heat in the cabinet is discharged to the upper end of the air pipe by the cooling fan, the cold air enters the air pipe from the outer circulating air outlet during the flow process of the heat from the upper end of the air pipe to the lower end of the air pipe, and the mixed gas enters the interior of the cabinet through the air inlet, further improving the cooling effect of the environment temperature in the cabinet, thereby ensuring that the BBU equipment can stably and efficiently operate under high-density deployment, greatly improving the performance and service life of the equipment. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0023] Figure 1 A perspective view of the BBU equipment cabinet provided by the embodiment of the present application is shown in the figure.

[0024] Figure 2 Another perspective view of the BBU equipment cabinet provided by the embodiment of the present application is shown in the figure.

[0025] Figure 3 A perspective view of the BBU equipment cabinet provided by the embodiment of the present application is shown in the figure.

[0026] Figure 4 A cross-sectional view of the BBU equipment cabinet provided by the embodiment of the present application is shown in the figure.

[0027] Figure 5 Another cross-sectional view of the BBU equipment cabinet provided by the embodiment of the present application is shown in the figure.

[0028] Figure 6 A perspective view of the BBU equipment cabinet provided by the embodiment of the present application is shown in the figure. Figure 5 An enlarged structural schematic view of position A in the figure.

[0029] Figure 7 An enlarged structural schematic view of position B in the figure. Figure 5 An enlarged structural schematic view of position C in the figure.

[0030] Figure 8 An enlarged structural schematic view of position D in the figure. Figure 5 An enlarged structural schematic view of position C in the figure.

[0031] Figure 9 A partial structural schematic view of the flow guide pipe and the bearing plate provided by the embodiment of the present application is shown in the figure.

[0032] Figure 10 A partial cross-sectional structural schematic view of the front cabinet door provided by the embodiment of the present application is shown in the figure.

[0033] Figure 11 An enlarged structural schematic view of position D in the figure. Figure 10 An enlarged structural schematic view of position D in the figure.

[0034] Figure 12 A partial structural schematic view of the air pipe provided by the embodiment of the present application is shown in the figure.

[0035] Specifically, 1-front cabinet door; 11-vent; 12-conical tube; 2-rear cabinet door; 3-side plate; 4-air flow circulation mixing assembly; 41-air pipe; 411-outer circulating air port; 412-lower air port; 42-inner slope plate; 43-air outlet; 44-radiator fan; 45-radiator fin; 5-first flow guide pipe; 51-first air inlet; 52-first air outlet; 53-mixing port; 6-bearing plate; 61-strip hole; 62-flow guide slope plate; 63-BBU device placement bin; 7-second flow guide pipe; 71-second air inlet; 72-second air outlet; 8-flow guide plate. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0038] As shown in Figure 1 , Figure 2 and Figure 3 , in order to achieve the above-mentioned purpose, the present application provides a BBU device cabinet, which comprises a side plate 3 and a front cabinet door 1 and a rear cabinet door 2 arranged on the side plate 3. Wherein, the inner side of the side plate 3 is sequentially arrayed with several bearing plates 6 from top to bottom, and the upper and lower two adjacent bearing plates 6 form a BBU device placement bin 63, and the BBU device is placed in the BBU device placement bin 63.

[0039] The front cabinet door 1 is arranged on the front side of the side plate 3, and the rear cabinet door 2 is arranged on the rear side of the side plate 3. Specifically, the front cabinet door 1 and the rear cabinet door 2 are connected to the side plate 3 through hinges, so as to ensure that the front cabinet door 1 and the rear cabinet door 2 can be flexibly opened, and the BBU device can be conveniently taken out and put in.

[0040] It should be noted that a plurality of vents 11 are arrayed on the surface of the front cabinet door 1 and the surface of the rear cabinet door 2. By opening a large number of vents 11 on the front cabinet door 1 and the rear cabinet door 2, the heat dissipation area is increased, and the problem of heat internal circulation caused by the front and rear doors of the traditional cabinet is avoided, and more efficient heat dissipation is achieved.

[0041] As shown in Figure 4As shown, the air flow circulation mixing assembly 4 is arranged on the outer side of the front cabinet door 1, and the air flow circulation mixing assembly 4 comprises: a plurality of heat dissipation fans 44 arranged in an array on the top of the front cabinet door 1, and the heat dissipation fans 44 are used to exhaust the hot air in the cabinet to reduce the temperature of the environment in the cabinet. Specifically, four heat dissipation fans 44 are arranged, and the heat dissipation fans 44 arranged on both sides directly exhaust the hot air in the cabinet to the outside of the cabinet, and the exhaust gas is not circulated.

[0042] In addition, the air pipe 41 is arranged on the outer side of the front cabinet door 1, the upper end of the air pipe 41 is connected to the two heat dissipation fans 44 arranged at the middle position, the hot air in the cabinet is exhausted to the upper end of the air pipe 41 by the heat dissipation fans 44, the hot air flows from the upper end of the air pipe 41 to the lower end of the air pipe 41, a plurality of outer circulation air inlets 411 are arranged in an array on the outer wall of the air pipe 41, and the cold air enters the air pipe 41 from the outer circulation air inlets 411 and mixes with the hot air during the flow of the hot air from the upper end of the air pipe 41 to the lower end of the air pipe 41, the lower end of the air pipe 41 is provided with an air outlet hole 43, the bottom of the front cabinet door 1 is provided with an air inlet hole, the air outlet hole 43 is communicated with the air inlet hole, and the mixed gas enters the inside of the cabinet through the air inlet hole, thereby further improving the cooling effect of the environment in the cabinet.

[0043] Further, when the gas in the cabinet flows through the air flow circulation mixing assembly 4, the air flow forms a positive pressure when blowing from the bottom of the cabinet, the hot air flow at the bottom of the cabinet is exhausted through the heat dissipation hole 11, a negative pressure is formed above the top of the cabinet at the same time, the air flow circulates from bottom to top, which can accelerate the exhaust of the hot air in the cabinet through the heat dissipation hole 11, and further improve the heat dissipation effect of the environment in the cabinet through the heat dissipation hole 11.

[0044] In use, the four heat dissipation fans 44 are started, the heat dissipation fans 44 located on both sides exhaust the hot air in the cabinet to the outside of the cabinet, and the two heat dissipation fans 44 located at the middle position exhaust the hot air in the cabinet to the air pipe 41, the cold air enters the air pipe 41 from the outer circulation air inlets 411 and mixes with the hot air during the flow of the hot air from the upper end of the air pipe 41 to the lower end of the air pipe 41, the mixed gas enters the inside of the cabinet through the air inlet hole, thereby reducing the temperature of the environment in the cabinet, promoting the circulation of the gas in the cabinet through the air flow circulation mixing assembly 4, further improving the descending speed of the temperature of the environment in the cabinet on the basis of heat dissipation through the heat dissipation hole 11, thereby ensuring that the BBU equipment can stably and efficiently operate under the condition of high-density deployment, improving the performance and service life of the equipment.

[0045] It should be noted that the air pipe 41 is in a U shape as a whole, and the U-shaped opening faces the front cabinet door 1, wherein the upper end of the air pipe 41 and the lower end of the air pipe 41 are both in an arc transition structure, thereby reducing the resistance of the airflow flowing inside the air pipe 41, and maximizing the suction of the cold air outside the air pipe 41 into the inside of the air pipe 41 and mixing with the hot air. Preferably, the upper end of the air pipe 41 and the lower end of the air pipe 41 are both detachably connected to the front cabinet door 1, facilitating replacement and maintenance of the air pipe 41.

[0046] In an embodiment of the utility model, the inside of the front cabinet door 1 is sequentially provided with a plurality of first flow guide pipes 5 from bottom to top, the length direction of the first flow guide pipe 5 is consistent with the height direction of the front cabinet door 1, the first air inlet 51 and the first air outlet 52 are symmetrically arranged on the plurality of first flow guide pipes 5, specifically, the first air inlet 51 is located at the lower end of the first flow guide pipe 5, and the first air outlet 52 is located at the upper end of the first flow guide pipe 5. In addition, the inside of the rear cabinet door 2 is sequentially provided with a plurality of second flow guide pipes 7 from bottom to top, the second air inlet 71 and the second air outlet 72 are symmetrically arranged on the second flow guide pipe 7, the second air inlet 71 is located at the lower end of the second flow guide pipe 7, and the second air outlet 72 is located at the upper end of the second flow guide pipe 7.

[0047] As shown in the figure, Figure 5 When the front cabinet door and the rear cabinet door are both in the closed state, the first air inlet 51 and the second air outlet 72 are symmetrically arranged on both sides of the side plate 3, that is, the gas discharged from the second air outlet 72 will preferentially enter the first air inlet 51, and the second air inlet 71 and the first air outlet 52 are symmetrically arranged on both sides of the side plate 3, that is, the gas discharged from the first air outlet 52 will preferentially enter the second air inlet 71, specifically, the gas is discharged from the first air outlet 52 in the first flow guide pipe 5 located below, then enters the second air inlet 71 of the same height and is discharged from the second air outlet 72, and the gas is discharged from the second air outlet 72, then enters the first air inlet 51 in the first flow guide pipe 5 located above, the first air inlet 51 in the first flow guide pipe 5 located above is of the same height with the second air outlet 72, thereby ensuring that the gas entering the inside of the cabinet sequentially passes through each BBU equipment placing bin 63 along an S-shaped route, so as to achieve the purpose of cooling each BBU equipment.

[0048] As shown in the figure, Figure 12 In an embodiment of the utility model, a plurality of heat dissipation fins 45 are arrayed on the inside of the air pipe 41, after the hot gas is discharged into the air pipe 41 by the heat dissipation fan 44, the air pipe 41 contacts the hot gas, and the heat in the hot gas is transferred to the air outside the cabinet by heat transfer, so as to achieve the purpose of cooling the hot gas in the air pipe 41, the contact area between the air pipe 41 and the air surface is increased by arraying a plurality of heat dissipation fins 45, the heat exchange effect of the air pipe 41 is improved, thereby accelerating the heat dissipation of the air pipe 41.

[0049] In addition, a lower air outlet 412 is arranged at the upper end of the air duct 41, and part of the hot air in the air duct 41 is discharged through the lower air outlet 412, and the hot air directly contacts the heat dissipation fins 45 through the lower air outlet 412, the gas flow speed inside the air duct 41 is increased, the heat exchange effect of the air duct 41 is further improved, and the heat dissipation of the air duct 41 is further accelerated.

[0050] As shown in Figure 6 , the inner slope plate 42 is rotatably connected at the position of the outer circulating air outlet 411, specifically, the upper end of the inner slope plate 42 is connected with the inner side wall of the air duct 41 through a hinge, and the inner slope plate 42 is arranged at the inner side of the air duct 41. After the hot air is discharged into the air duct 41 by the heat dissipation fan 44, when the gas in the air duct 41 flows, according to Bernoulli's principle, the atmospheric pressure outside the air duct 41 is less than the atmospheric pressure outside the air duct 41. The cold air outside the air duct 41 pushes the inner slope plate 42 and enters the air duct 41 through the outer circulating air outlet 411. The cold air entering the air duct 41 mixes with the hot air, and the overall environment temperature in the air duct 41 is reduced. When there is no gas flow in the air duct 41, the inner slope plate 42 naturally falls under the action of gravity, and the side surface of the inner slope plate 42 is attached to the inner side wall of the air duct 41, and the outer circulating air outlet 411 is blocked, so that dust does not enter the air duct 41, and the dust in the air duct 41 is blown into the cabinet after the heat dissipation fan works again, thereby protecting the BBU equipment.

[0051] Preferably, a filter plate (not shown in the figure) is arranged at the lower end of the air duct 41, and the mixed gas entering the inside of the cabinet is filtered through the filter plate, so that the dust in the environment outside the cabinet does not enter the inside of the cabinet, and the BBU equipment is further protected.

[0052] As shown in Figure 8 , in an embodiment of the utility model, a plurality of strip-shaped holes 61 are arranged on the bearing plate 6 in an array, and the strip-shaped holes 61 are connected with two adjacent BBU equipment placing bins 63 above and below. When the gas entering the inside of the cabinet flows along the S-shaped route through the first flow guide pipe 5 and the second flow guide pipe 7 in sequence through each BBU equipment placing bin 63, it also directly flows from the BBU equipment placing bin 63 of the next layer to the BBU equipment placing bin 63 of the upper layer through the strip-shaped hole 61, so that the gas entering the inside of the cabinet can fully contact the BBU equipment, and the cooling effect of the BBU equipment is improved.

[0053] In addition, the bearing plate 6 is arranged with a plurality of guide slope plates 62, each of which is located above the strip-shaped hole 61, and the acute angle between the top surface of the guide slope plate 62 and the horizontal plane is 5-15°, preferably, the acute angle between the top surface of the guide slope plate 62 and the horizontal plane is 10°, that is, the guide slope plate 62 is tilted upward at a certain angle along the direction of the gas flow, and the guide slope plate 62 further optimizes the gas flow direction, so that the gas entering the inside of the cabinet can flow along the S-shaped route through each BBU equipment placing bin 63 while passing through the strip-shaped hole 61.

[0054] In an embodiment of the utility model, the inner wall of the first guide pipe 5 is provided with an arc surface structure, which can guide the gas to quickly reach the first air outlet 52 from the first air inlet 51, and the inner wall of the second guide pipe 7 is also provided with an arc surface structure, which can guide the gas to quickly reach the second air outlet 72 from the second air inlet 71, and the arc surface structure can reduce the airflow resistance, thereby accelerating the circulation flow speed of the gas in the cabinet.

[0055] As shown in Figure 7 , the two ends of the first guide pipe 5 and the two ends of the second guide pipe 7 are provided with guide plates 8, which can ensure that the gas can fully contact the BBU equipment when entering the first air inlet 51 or the second air inlet 71 and when being discharged from the first air outlet 52 or the second air outlet 72, thereby further improving the cooling effect on the BBU equipment.

[0056] It should be noted that the first guide pipe 5 and the second guide pipe 7 are arranged on the front cabinet door 1 and the rear cabinet door 2 respectively, and when the front cabinet door 1 and the rear cabinet door 2 are opened, the first guide pipe 5 and the second guide pipe 7 are separated from the side plate 3 along with the front cabinet door 1 and the rear cabinet door 2, which does not affect the taking out and placing of the BBU equipment, thereby facilitating the maintenance of the BBU equipment.

[0057] As shown in Figure 9 , in an embodiment of the utility model, the side surface of the first guide pipe 5 and the side surface of the second guide pipe 7 are arranged with a plurality of mixing ports 53, which communicate the inside and outside of the cabinet, and according to Bernoulli's principle, when the gas flows in the first guide pipe 5 and the second guide pipe 7, the low-temperature gas outside the cabinet is sucked into the inside of the cabinet through the mixing port 53 and mixed with the relatively high-temperature gas, thereby further improving the cooling effect of the environment temperature in the cabinet.

[0058] As shown in Figure 10 and Figure 11 , the outer side of the heat dissipation hole 11 is provided with a conical pipe 12, the tip of the conical pipe 12 faces the inside of the cabinet, and the arrangement of the conical pipe 12 can make the airflow entering the inside of the cabinet from the outside of the cabinet more concentrated, and the gas flow speed is higher, thereby improving the heat dissipation efficiency of the BBU equipment.

[0059] The utility model uses, starts four heat dissipation fans 44, the heat dissipation fan 44 of both sides is exported the hot air in the cabinet outside cabinet, the two heat dissipation fans 44 in the middle position are exported the hot air in the cabinet to the air pipe 41, the hot air flows in the process from the upper end of the air pipe 41 to the lower end of the air pipe 41, the cold air enters the air pipe 41 and mixes with the hot air from the outer circulating air port 411, and the gas after mixing with the cold air enters the air inlet hole 43, enters the inside of the cabinet through the air inlet hole, the gas in the inside of the cabinet flows along the S-shaped route through the first flow guide pipe 5 and the second flow guide pipe 7 and sequentially passes through each BBU equipment placing bin 63, also directly flows to the BBU equipment placing bin 63 of the upper layer from the BBU equipment placing bin 63 of the next layer through the strip-shaped hole 61, so that the gas in the inside of the cabinet fully contacts with the BBU equipment, and the BBU equipment is cooled.

[0060] Summarizing, through the heat dissipation hole 11 on the front cabinet door 1 and the rear cabinet door 2, the hot air in the cabinet is exported to the upper end of the air pipe 41 through the heat dissipation fan 44, the hot air flows in the process from the upper end of the air pipe 41 to the lower end of the air pipe 41, the cold air enters the air pipe 41 and mixes with the hot air from the outer circulating air port 411, and the gas after mixing enters the inside of the cabinet through the air inlet hole, further improves the cooling effect of the BBU equipment, ensures that the BBU equipment can stably and efficiently operate under the condition of high-density deployment, greatly improves the performance and service life of the equipment.

[0061] It should be noted that in the present specification, relational terms such as first and second are used solely to distinguish one entity from another without necessarily requiring or implying any actual relationship or order between or among such entities.

[0062] The principles and implementation modes of the utility model are described by applying specific examples herein, and the above example is only used to help understand the method and core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, without departing from the principles of the utility model, the utility model can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the utility model.

Claims

1. A BBU equipment cabinet, characterized in that, The utility model relates to a cabinet, including: Side plate, the inner side of side plate is sequentially arrayed with a plurality of bearing plate from top to bottom, and the upper and lower two adjacent bearing plate constitutes BBU equipment placement bin; The front cabinet door of front side of side plate is provided with, the rear cabinet door of rear side of side plate is provided with, the surface of front cabinet door and the surface of rear cabinet door are arrayed with a plurality of heat dissipation holes; Air flow circulation mixing assembly, is located in the outside of front cabinet door, the air flow circulation mixing assembly includes: Heat dissipation fan, a plurality of heat dissipation fan array is arranged in the top of front cabinet door; Air pipe, is located in the outside of front cabinet door, the upper end of air pipe is connected with heat dissipation fan, and the lower end of air pipe is provided with air outlet, and the bottom of front cabinet door is provided with air inlet, and air outlet is communicated with air inlet; The outer circulation air port of a plurality of is arrayed in the outer wall of air pipe.

2. The BBU equipment cabinet of claim 1, wherein, The inner side of front cabinet door is sequentially provided with a plurality of first flow guide pipe from bottom to top, and a plurality of first flow guide pipe is symmetrically provided with first air inlet and first air outlet, and the inner side of rear cabinet door is sequentially provided with a plurality of second flow guide pipe from bottom to top, and the second flow guide pipe is symmetrically provided with second air inlet and second air outlet, and the first air inlet and the second air outlet are symmetrically arranged on the both sides of side plate, and the second air inlet and the first air outlet are symmetrically arranged on the both sides of side plate.

3. The BBU equipment cabinet of claim 2, wherein, The inner side of air pipe is arrayed with a plurality of radiating fins, and the upper end of air pipe is provided with lower air outlet, and lower air outlet is located above radiating fin.

4. The BBU equipment cabinet of claim 3, wherein, The inner slope board of outer circulation air port position can rotatably be connected, and the inner slope board is located in the inner side of air pipe.

5. The BBU equipment cabinet of claim 1, wherein, The bearing plate is arrayed with a plurality of strip holes, and the strip hole is communicated with the upper and lower two adjacent BBU equipment placement bin.

6. The BBU equipment cabinet of claim 5, wherein, The bearing plate is arrayed with a plurality of flow guide slope board, and each flow guide slope board is located above strip hole, and the acute angle between the top surface of flow guide slope board and horizontal plane is 5-15 °.

7. A BBU equipment cabinet according to any of claims 2-4, characterized in that, The inner wall of first flow guide pipe and the inner wall of second flow guide pipe are all provided with arc surface structure.

8. The BBU equipment cabinet of claim 7, wherein, The both ends of first flow guide pipe and the both ends of second flow guide pipe are provided with flow guide plate.

9. The BBU equipment cabinet of claim 8, wherein, The side surface of first flow guide pipe and the side surface of second flow guide pipe are arrayed with a plurality of mixing ports.

10. The BBU equipment cabinet of claim 9, wherein, The outside of heat dissipation hole is provided with conical tube, and the tip of conical tube is towards the interior of cabinet.

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