Bidirectional air inlet integrated cooling cabinet

Abstract

The utility model discloses a two-way air inlet integrated cooling cabinet, which relates to the technical field of energy conservation and emission reduction of air conditioners, and comprises a cabinet body, air supply pipelines and a two-way air inlet air conditioner, the air supply pipelines are positioned on the side surface of the cabinet and are in one-to-one correspondence with air inlets of electronic equipment in the cabinet body to form direct circulation of cold air; the bidirectional air inlet air conditioner comprises a first centrifugal fan and a second centrifugal fan, the first centrifugal fan and the second centrifugal fan are arranged in parallel, the first centrifugal fan is provided with a first centrifugal fan air inlet, and the second centrifugal fan is provided with a second centrifugal fan air inlet. One of the first centrifugal fan air inlet and the second centrifugal fan air inlet faces the front side face of the cabinet body, the other one faces the rear side face of the cabinet body, indoor airflow circulation is promoted, a local high-temperature area is prevented from being generated on one side of the cabinet, and therefore the overall good cooling uniformity and cooling effect are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of air - conditioning energy conservation and emission reduction, and particularly relates to a two - way air - inlet integrated cooling cabinet. Background Technique

[0002] The BBU device is a baseband signal processing unit in a mobile communication network, usually centrally placed in a BBU cabinet in a base station computer room. The energy consumption of the BBU device is closely related to the heat dissipation performance of the device. With the large - scale construction of the 5G network, the high - energy - consumption problem of 5G BBU devices has become increasingly prominent. Reducing the energy consumption of 5G BBU devices has become an urgent need for operators.

[0003] In traditional network cabinets, the BBU mainly relies on the computer room air conditioner for cooling. Among them, the BBU device is generally designed with a side - inlet and side - outlet ventilation method, while the network cabinet usually adopts a front - to - back ventilation method. Its air flow organization is inconsistent with the side - inlet and side - outlet ventilation method of the BBU. Moreover, in traditional cabinets, the ventilation gap between the two sides of the BBU device and the side wall plate of the cabinet is small, resulting in low heat dissipation performance of the traditional cabinet. When there are many BBU devices deployed in the cabinet, it is easy to cause the devices to overheat. Under the long - term over - heat state, the power consumption of the BBU device will increase significantly.

[0004] In addition, the space of many computer rooms is limited, the cabinets are arranged densely, and the temperature distribution deviation in each area of the computer room is large. Especially, the space in the rear area of the cabinet is often small, resulting in poor air circulation of the hot air discharged from the rear of the cabinet. The accumulated hot air flow is easy to form cross - flow or back - flow in the cabinet and between cabinets, seriously affecting the heat dissipation performance of the cabinet. Content of the Utility Model

[0005] Based on the above analysis, the purpose of the utility model is to provide a two - way air - inlet integrated cooling cabinet, which can achieve precise air supply, eliminate the problem of local hot air accumulation in the computer room at the same time, improve the cooling efficiency of the BBU device, and reduce energy consumption.

[0006] A two - way air - inlet integrated cooling cabinet includes a cabinet body, an air - supply duct, and a two - way air - inlet air cooler. The air - supply duct is connected to the two - way air - inlet air cooler. Four columns are arranged inside the cabinet body, and an equipment installation space is formed between the four columns. A plurality of electronic devices are arranged at intervals along the height direction in the equipment installation space.

[0007] The air - supply duct is arranged between the side of the cabinet body and two of the columns. The air - supply duct includes a plurality of air - supply duct air outlets, and the air - supply duct air outlets are arranged corresponding to the electronic device air inlets of the electronic devices.

[0008] The two-way air intake air cooler is arranged at the bottom of the cabinet body and below the electronic device. The two-way air intake air cooler includes a first centrifugal fan, a first evaporator, a second centrifugal fan, a second evaporator and a driving device. The first centrifugal fan and the second centrifugal fan are arranged in a back-to-back mirror image and in parallel. Among them, the first centrifugal fan has a first volute, a first impeller and a first centrifugal fan air inlet, and the second centrifugal fan has a second volute, a second impeller and a second centrifugal fan air inlet. The first centrifugal fan air inlet faces the front side of the cabinet body, and the second centrifugal fan air inlet faces the rear side of the cabinet body.

[0009] Further, there is a gap ventilation opening between two adjacent electronic devices up and down.

[0010] Further, the front side and the rear side of the cabinet body are of an open design, or a front cabinet door is provided on the front side of the cabinet body, and a rear cabinet door is provided on the rear side of the cabinet body. Both the front cabinet door and the rear cabinet door are mesh doors or grid doors with through holes.

[0011] Further, the outlet of the first volute forms the first air outlet of the first centrifugal fan, and the outlet of the second volute forms the second air outlet of the second centrifugal fan. Both the first air outlet and the second air outlet are horizontally arranged at the lower part of the two-way air intake air cooler, and the air outlet directions are the same.

[0012] Further, the two-way air intake air cooler further includes a first air duct and a second air duct. The first air duct is connected to the first air outlet, and the second air duct is connected to the second air outlet. Both the first air duct and the second air duct are elbow pipes.

[0013] Further, the two-way air intake air cooler further includes an air duct connecting piece. One end of the air duct connecting piece is connected to the first air duct and the second air duct, and the other end is connected to the air inlet of the air supply duct at the bottom of the air supply duct.

[0014] Further, the driving device is a coaxial driving motor. The first centrifugal fan and the second centrifugal fan are respectively connected to both ends of the driving shaft of the coaxial driving motor to realize the synchronous operation of the two centrifugal fans.

[0015] Further, the bending direction of the blades of the first impeller is opposite to the bending direction of the blades of the second impeller.

[0016] Further, an inclined pressure regulating plate is arranged inside the air supply duct.

[0017] Compared with the prior art, the two-way air intake integrated cooling cabinet has the following beneficial effects:

[0018] By integrating the cooling machine and the air supply duct inside the cabinet, space is saved, the utilization rate of the computer room space is improved, it is convenient for maintenance personnel to carry out repairs, cost is saved, and complex pipeline layout is avoided;

[0019] By setting a two-way air inlet air conditioner, air inlets are provided on both the front and rear sides of the cabinet to achieve double-sided air inlet of the air conditioner, avoiding heat flow accumulation on one side of the cabinet, causing local overheating and thermal damage to local electronic devices, thereby ensuring good overall cooling uniformity and cooling effect;

[0020] By setting an air supply duct on one side of the cabinet and providing a number of air supply duct air outlets on the air supply duct corresponding to the electronic devices installed on the cabinet, the cold air can directly blow from the air supply duct air outlet to the corresponding electronic device, and the cold air can act on the electronic device more directly and concentratedly, accurately targeting and cooling the electronic device, thereby achieving a more efficient cooling effect;

[0021] By setting two air inlet paths, namely, the cold air directly blows from the air supply duct air outlet to the electronic device air inlet, and the indoor cold air enters the electronic device air inlet from the gap ventilation opening between adjacent electronic devices. The two can form a superimposed effect to further improve the cooling efficiency, and can also be adjusted according to the actual application situation, and a single air inlet mode can be adopted alone. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions that the present invention can be implemented. Therefore, they do not have technical substance significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that the technical content disclosed by the present invention can cover.

[0024] Figure 1 It is a schematic diagram of the overall front structure of the cabinet in the embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall back structure of the cabinet in the embodiment of the present invention;

[0026] Figure 3This is a schematic structural diagram of the cabinet without the left side in the embodiment of the present utility model;

[0027] Figure 4 This is a schematic structural diagram of the cabinet without the right side in the embodiment of the present utility model;

[0028] Figure 5 This is a schematic diagram of the overall internal structure of the air conditioner in the embodiment of the present utility model;

[0029] Figure 6 This is a schematic structural diagram of the air conditioner without the first evaporator in the embodiment of the present utility model;

[0030] Figure 7 This is a schematic structural diagram of the inside of the regulating plate in the embodiment of the present utility model;

[0031] In the figure, the reference numerals are: 1 - cabinet; 2 - electronic equipment; 21 - electronic equipment air inlet; 22 - gap ventilation opening; 221 - gap air inlet; 222 - gap air outlet; 23 - electronic equipment air outlet; 3 - air supply duct; 31 - air supply duct air outlet; 32 - regulating plate; 4 - two-way inlet air conditioner; 41 - first centrifugal fan; 411 - first centrifugal fan air inlet; 42 - second centrifugal fan; 421 - second centrifugal fan air inlet; 43 - first evaporator; 44 - second evaporator; 45 - first air duct; 46 - second air duct; 5 - air duct connector; 6 - driving device. Detailed implementation manners

[0032] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] The technical solutions of the present utility model will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0034] Please refer to Figures 1 - 4 , the present utility model provides a technical solution:

[0035] A two-way air intake integrated cooling cabinet, comprising a cabinet body 1, an air supply duct 3, and a two-way air intake air cooler 4, wherein the air supply duct 3 is connected to the two-way air intake air cooler 4. The cabinet body 1 includes a front side, a rear side, a left side, and a right side. The front side and the rear side of the cabinet body 1 are of an open design, or front cabinet doors and rear cabinet doors are provided on the front side and the rear side of the cabinet body 1, and both the front cabinet doors and the rear cabinet doors are mesh doors, grid doors, etc. with through holes. Four upright columns are arranged inside the cabinet body 1, and an equipment installation space is formed between the four upright columns for installing electronic devices 2. A plurality of the electronic devices 2 are installed at intervals from top to bottom in the height direction within the equipment installation space. In this embodiment, the electronic device 2 is a BBU device.

[0036] The air supply duct 3 is arranged between the left side / right side of the cabinet body 1 and two of the upright columns. The air supply duct 3 includes an air supply duct air inlet at the bottom and a plurality of air supply duct air outlets 31. An electronic device air inlet 21 is provided on one side of the electronic device 2 close to the air supply duct 3, and an electronic device air outlet 23 is provided on the opposite side. The air supply duct air outlets 31 are correspondingly arranged in the height direction with the electronic device air inlet 21, and the two form an air flow passage, so that the cold air blown out from the air supply duct air outlets 31 can be directly supplied into the electronic device 2. In addition, there is also a gap ventilation opening 22 between two adjacent electronic devices 2 up and down, and the cold air in the machine room can also enter the electronic device air inlet 21 through the gap ventilation opening 22.

[0037] In this embodiment, the cold air is supplied to the electronic device 2 from the side. By means of the precisely designed air supply duct 3 as an air flow guiding structure, the cold air is directly introduced into the electronic device air inlet 21, thereby realizing local high-efficiency heat exchange. Compared with the traditional cooling method, the mixing of cold and hot air flows and the thermal resistance are reduced, and the cooling efficiency is enhanced.

[0038] In this embodiment, the two-way air intake air cooler 4 is arranged at the bottom of the cabinet body 1 and below the electronic device 2. Refer to Figures 5 - 6 , the two-way air intake air cooler 4 includes a first centrifugal fan 41, a first evaporator 43, a first air duct 45, a second centrifugal fan 42, a second evaporator 44, a second air duct 46, and a driving device 6. The first centrifugal fan 41 and the second centrifugal fan 42 are arranged in a back-to-back mirror image parallel connection. Among them, the first centrifugal fan 41 has a first centrifugal fan air inlet 411, the second centrifugal fan 42 has a second centrifugal fan air inlet 421, the first centrifugal fan air inlet 411 faces the front side of the cabinet body 1, and the second centrifugal fan air inlet 421 faces the rear side of the cabinet body 1.

[0039] A first evaporator 43 is provided at the air inlet 411 of the first centrifugal fan, and a second evaporator 44 is provided at the air inlet 421 of the second centrifugal fan.

[0040] The first centrifugal fan 41 has a first volute and a first impeller, and the second centrifugal fan 42 has a second volute and a second impeller. The outlet of the first volute forms the first air outlet of the first centrifugal fan 41, and the outlet of the second volute forms the second air outlet of the second centrifugal fan 42. The first air outlet and the second air outlet are both horizontally provided at the lower part of the two-way inlet air cooler 4, and the air outlet directions are the same.

[0041] In this embodiment, the first air outlet is connected to a first air duct 45, and the second air outlet is connected to a second air duct 46. The first air duct 45 and the second air duct 46 are both elbow pipes, which change the air flow direction from the original horizontal direction to a vertically upward flow. The first air duct 45 and the second air duct 46 are communicated with the air inlet of the air supply duct 3 through an air duct connector 5.

[0042] In this example, the refrigeration power of the two-way inlet air cooler 4 is 5KW, the rated outlet air volume is 800m 3 / h, the length of the two-way inlet air cooler 4 is 54 cm, the width is 50 cm, and the height is 35 cm. The refrigerant pipelines of the first evaporator 43 and the second evaporator 44 are connected in parallel with each other.

[0043] In this embodiment, the width of the cabinet 1 is 70 cm, the thickness is 60 cm, and the height is 200 cm. The front side and the rear side of the cabinet 1 are of an open design, or the front cabinet door and the rear cabinet door of the cabinet 1 are both mesh doors, grid doors, etc. with through holes. In addition, the two-way inlet air cooler 4 located below the interior of the cabinet includes two centrifugal fans, and the two centrifugal fans are arranged back-to-back and mirror-symmetrically. The two air inlets respectively correspond to the front side and the rear side of the cabinet 1. When the two-way inlet air cooler 4 works, the indoor air in the front and rear spaces of the cabinet respectively enters the two-way inlet air cooler 4 through the above two air inlets, forming an air flow cycle with the hot air discharged from the cabinet, so that the air flows in both the front and the rear of the cabinet can circulate, avoiding the formation of local hot air flow accumulation around the cabinet. Especially when the cabinet arrangement density is relatively high, since the space behind the cabinet is often set smaller, the air circulation of the hot air discharged from the rear of the cabinet is relatively poor, which is likely to cause local overheating. In this embodiment, air inlets are provided in the front and rear of the cabinet. Especially, the air behind the cabinet can be driven by the centrifugal fan to accelerate the air flow, prevent the accumulation of hot air, significantly improve the heat dissipation performance of the cabinet, and ensure more uniform cooling in each area.

[0044] The two-way air intake integrated cooling cabinet obtained through the above design has at least a first air intake path and a second air intake path for the cold air source flowing into its electronic device 2. The first air intake path is as follows: the two-way air intake air cooler 4 absorbs indoor cold air through the air inlets on both sides, forms colder cold air after heat exchange through the first evaporator 43 and the second evaporator 44, and then transports the cold air through the air outlet of the centrifugal fan and the air duct to the air supply duct 3, and then blows it to the corresponding electronic device air inlet 21 through several air supply duct air outlets 31; the second air intake path is as follows: the indoor cold air cooled by the refrigeration air conditioner in the computer room can flow into the electronic device air inlet 21 through the gap vent 22 between the two electronic devices 2 from the open front side or the rear side of the cabinet. In actual use, when the temperature is relatively high in summer, the two-way air intake air cooler in the cabinet and the indoor refrigeration air conditioner in the computer room can be turned on at the same time, and the two-way air intake cools the electronic device 2 simultaneously, forming a superimposed effect and further improving the cooling efficiency; when the overall indoor temperature is relatively low, the two-way air intake air cooler can be turned off, and only the refrigeration mode of the indoor refrigeration air conditioner in the computer room is adopted. At the same time, compared with the conventional single-way air intake air cooler, the size of the centrifugal fan of the two-way air intake air cooler 4, especially the height of the two-way air intake air cooler 4, can be significantly reduced, which can provide more installation space for the electronic device 2 in the cabinet. Moreover, when the two-way air intake air cooler 4 fails to stop or does not work, the electronic device 2 can still rely on the second air intake path to dissipate heat, and the reliability of the cabinet is greatly improved.

[0045] The cross-sectional size of the air supply duct 3 is rectangular, with a width of 8 cm and a length of 18 cm. The top of the air supply duct 3 is closed. The air supply duct inlet at the bottom of the air supply duct 3 is connected to the two-way air intake air cooler 4. A plurality of air supply duct air outlets 31 are provided on the side of the air supply duct 3. The plurality of air supply duct air outlets 31 are arranged at intervals in the vertical direction, corresponding to one BBU device respectively. The number of the air supply duct air outlets 31 can be 10.

[0046] Furthermore, in this embodiment, the two-way air intake air cooler 4 further includes an air duct connector 5, as shown in Figures 5 - 6 , one end of the air duct connector 5 is connected to the first air duct 45 and the second air duct 46, and the other end is connected to the air supply duct inlet at the bottom of the air supply duct 3. The air duct connector 5 can mix the two-way cold air generated by the two centrifugal fans and transport it to the air supply duct 3, playing a good role in connection and convergence.

[0047] It should be noted that the two-way air intake air cooler 4 may not be provided with the air duct connector 5. At this time, two air supply ducts 3 can be designed, and the first air duct 45 and the second air duct 46 are respectively connected to one air supply duct 3.

[0048] Furthermore, referring to Figure 5, the driving device 6 is a coaxial driving motor, and the first centrifugal fan 41 and the second centrifugal fan 42 are respectively connected to the coaxial driving motor to achieve synchronous operation of the two centrifugal fans.

[0049] Specifically, a first impeller is equipped in the internal structure of the first centrifugal fan 41, and a second impeller is equipped in the internal structure of the second centrifugal fan 42. One end of the driving shaft of the first impeller is connected to the coaxial driving motor, and the other end of the driving shaft is connected to the second impeller. The air suction function is realized by the rotation of the impeller. The two impellers are coaxially driven by the same driving device 6. The driving device 6 can usually be selected as a three-phase frequency conversion motor. When the motor rotates, the driving shaft drives the two impellers to rotate synchronously, so that the front side and the rear side of the cabinet can both suck the indoor air of the computer room into the centrifugal fan synchronously. When the two-way air-cooled chiller 4 of this embodiment works, the default driving frequency of the driving device 6 is 60 Hz. At this time, the total air volume output by the air supply duct 3 is 800 m 3 / h, and the air volume output by each air outlet is 80 m 3 / h.

[0050] It should be noted that two independent driving devices 6 can also be set. The two driving devices 6 drive their respective driving shafts respectively, and each driving shaft is connected to its respective impeller to achieve independent driving.

[0051] Furthermore, the bending direction of the blades of the first impeller is opposite to the bending direction of the blades of the second impeller.

[0052] Specifically, both the first impeller and the second impeller are multi-wing forward type, made of ABS, with an impeller diameter of 170 mm and a rated speed of 1750 r / min. When the two impellers with opposite blade bending directions rotate synchronously, they can ensure that air is sucked into the two-way air-cooled chiller 4 from the front side and the rear side of the cabinet at the same time, and ensure that the first air outlets and the second air outlets of the first centrifugal fan 41 and the second centrifugal fan 42 are horizontally arranged at the lower part of the two-way air-cooled chiller 4 and the air outlet directions are the same.

[0053] In this embodiment, the height of the outlet cross-section of the first volute and the second volute is 80 mm, and the width is 90 mm. The top outlet of the air duct connector 5 is rectangular, and the width of this rectangular outlet is 80 mm and the length is 180 mm.

[0054] Furthermore, an inclined pressure regulating plate 32 is provided in the air supply duct 3, see Figure 7 . The cross-sectional area of the gas flow channel gradually decreases along the gas flow direction, which can make the wind pressure and wind speed at the air outlets 31 of each air supply duct basically the same, and further ensure uniform cooling of each of the multiple electronic devices 2.

[0055] In this embodiment, a temperature sensor is provided at the air outlet 23 of the electronic device and is connected to the air conditioner controller. The working mode of the two-way air inlet air conditioner 4 is as follows: when the temperature at the air outlet 23 of the electronic device is greater than the set value (for example, 45 °C), the two-way air inlet air conditioner 4 is controlled to continuously work for one working cycle (for example, 20 minutes). After the working cycle ends, if the temperature at the air outlet 23 of the electronic device is still greater than the set value, the two-way air inlet air conditioner 4 is controlled to continue the next working cycle; otherwise, the two-way air inlet air conditioner 4 is controlled to stop working.

[0056] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A two-way air inlet integrated cooling cabinet, comprising a cabinet body, an air supply duct and a two-way air inlet air cooler. The air supply duct is connected to the two-way air inlet air cooler. Four columns are arranged inside the cabinet body. An equipment installation space is formed between the four columns. A plurality of electronic devices are arranged at intervals along the height direction in the equipment installation space. The air supply duct is arranged between the side surface of the cabinet body and two of the columns. The air supply duct includes a plurality of air supply duct air outlets, and the air supply duct air outlets are arranged corresponding to the electronic device air inlets of the electronic devices. The two-way air intake air cooler is arranged at the bottom of the cabinet and below the electronic device. The two-way air intake air cooler includes a first centrifugal fan, a first evaporator, a second centrifugal fan, a second evaporator and a driving device. The first centrifugal fan and the second centrifugal fan are arranged in a back-to-back mirror image parallel connection. Among them, The first centrifugal fan has a first volute, a first impeller and a first centrifugal fan air inlet. The second centrifugal fan has a second volute, a second impeller and a second centrifugal fan air inlet. The first centrifugal fan air inlet faces the front side surface of the cabinet body, and the second centrifugal fan air inlet faces the rear side surface of the cabinet body.

2. The two-way air inlet integrated cooling cabinet according to claim 1, wherein There is a gap ventilation opening between two adjacent electronic devices up and down.

3. The two-way air intake integrated cooling cabinet according to claim 2, wherein The front side surface and the rear side surface of the cabinet body are of an open design, or a front cabinet door is arranged on the front side surface of the cabinet body, and a rear cabinet door is arranged on the rear side surface of the cabinet body. Both the front cabinet door and the rear cabinet door are mesh doors or grid doors with through holes.

4. The two-way air inlet integrated cooling cabinet according to claim 3, characterized in that, The outlet of the first volute forms the first air outlet of the first centrifugal fan. The outlet of the second volute forms the second air outlet of the second centrifugal fan. The first air outlet and the second air outlet are both horizontally arranged at the lower part of the two-way air inlet air cooler, and the air outlet directions are the same.

5. The two-way air inlet integrated cooling cabinet according to claim 4, characterized in that, The two-way air inlet air cooler further includes a first air duct and a second air duct. The first air duct is connected to the first air outlet, and the second air duct is connected to the second air outlet. Both the first air duct and the second air duct are elbow pipes.

6. The two-way air intake integrated cooling cabinet according to claim 5, wherein The two-way air inlet air cooler further includes an air duct connecting piece. One end of the air duct connecting piece is connected to the first air duct and the second air duct, and the other end is connected to the air supply duct air inlet at the bottom of the air supply duct.

7. The two-way air intake integrated cooling cabinet according to any one of claims 1-6, characterized in that The driving device is a coaxial driving motor. The first centrifugal fan and the second centrifugal fan are respectively connected to both ends of the driving shaft of the coaxial driving motor to realize the synchronous operation of the two centrifugal fans.

8. The two-way air inlet integrated cooling cabinet according to claim 7, wherein, The bending direction of the blades of the first impeller is opposite to the bending direction of the blades of the second impeller.

9. The two-way air intake integrated cooling cabinet according to claim 8, wherein, An inclined pressure regulating plate is arranged inside the air supply duct.

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