Indirect evaporative cooling device and data center

Abstract

The utility model discloses an indirect evaporative cooling device and a data center, and belongs to the technical field of evaporative cooling. The indirect evaporative cooling device comprises at least one indirect evaporative cooling unit, a first container, a first filtering piece and a first conveying pump. The indirect evaporative cooling unit comprises a shell, a spraying assembly located in the shell, an indirect heat exchanger, a second container and a second conveying pump. The first container is located outside the shell, the first filtering piece is located in the first container, the second container, the first container and the spraying assembly are sequentially communicated through a conveying pipeline, the outlet end face of the spraying assembly faces the open end of the second container, and the indirect heat exchanger is located between the second container and the spraying assembly; the first conveying pump is located on a conveying pipeline between the first container and the spraying assembly, and the second conveying pump is located on a conveying pipeline between the second container and the first container. The sewage is centrally stored and filtered through the first container, so that high-frequency maintenance of the first filter part is facilitated, the maintenance cost is not increased, and the operation space is larger.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporative cooling, and in particular to an indirect evaporative cooling device and a data center. Background Art

[0002] Indirect evaporative cooling (IEC) technology is usually used for energy-saving cooling in data centers. For example, water-side indirect evaporative cooling technology uses an indirect heat exchanger to cool the air to be processed (called primary air) after direct evaporative cooling to achieve isohumidity cooling of the primary air. Therefore, based on indirect evaporative cooling, the high-temperature air generated by the data center can be isohumidified by low-temperature outdoor air. Usually, the indirect evaporative cooling unit uses a spray module to spray the outside of the heat exchanger to reduce the temperature of the air outside the heat exchanger.

[0003] The spray module includes a spray assembly, an open water tank and a conveying assembly, wherein the spray assembly is located on one side of the heat exchanger, the open water tank is located on the other side of the heat exchanger, and the conveying assembly connects the spray assembly and the open water tank, so that the conveying assembly conveys the water in the open water tank to the spray assembly for spraying, and the open water tank receives the spray water flowing down from the heat exchanger. The open design of the open water tank makes it easy for dust, flocs and other impurities to enter its interior, so currently a filter is set inside the open water tank, and the water is filtered and processed by the filter before being conveyed to the spray assembly through the conveying assembly.

[0004] However, the open water tank is usually arranged inside the indirect evaporative cooling device, which makes it inconvenient and costly to maintain and update the filter inside the water tank. Utility Model Content

[0005] The embodiment of the utility model provides an indirect evaporative cooling device and a data center, which can solve the technical problems existing in the related technologies. Specifically, the technical solution is as follows:

[0006] On the one hand, an indirect evaporative cooling device is provided, which includes: at least one indirect evaporative cooling unit, a first container, a first filter element and a first delivery pump; the indirect evaporative cooling unit includes: a shell, and a spray assembly, an indirect heat exchanger, a second container and a second delivery pump located inside the shell; the first container is located outside the shell, the first filter element is located inside the first container, the second container, the first container and the spray assembly are connected in sequence through a delivery pipeline, the outlet end of the spray assembly faces the open end of the second container, and the indirect heat exchanger is located between the outlet end of the spray assembly and the open end of the second container; the first delivery pump is located on the delivery pipeline between the first container and the spray assembly, and the second delivery pump is located on the delivery pipeline between the second container and the first container.

[0007] The indirect evaporative cooling device provided by the embodiment of the utility model centrally stores and filters sewage by adding a first container located outside the indirect evaporative cooling unit. Compared with the problem that the second container must be arranged below the spray assembly, which is limited in position, the first container has greater flexibility in position arrangement and can be arranged outside the shell of the indirect evaporative cooling device. The first container is not limited to a space of smaller size, has a larger operating space, and is conducive to designing the volume of the first container to be larger. In this way, compared with maintaining or updating the filter element inside the second container, maintaining or updating the first filter element inside the first container with a larger operating space is more convenient, time-saving, and labor-saving, and is convenient for high-frequency maintenance of the first filter element without increasing maintenance costs, and has a larger operating space.

[0008] In some possible implementations, the flow rate of the second delivery pump is greater than the flow rate of the first delivery pump. By designing the flow rate of the second delivery pump to be larger, not only is its ability to pump sewage improved, ensuring that the sewage inside the open second container is fully and completely delivered to the first container, but also, the impeller clearance of the second delivery pump with a larger flow rate is usually larger, which can also prevent the pump body from being blocked by impurities in the sewage, preventing air sealing and stagnation.

[0009] In some possible implementations, the first delivery pump includes a water pump, and the second delivery pump includes a sewage pump.

[0010] In some possible implementations, the first container is a closed container, and / or the volume of the first container is greater than the volume of the second container.

[0011] In some possible implementations, the first container contains a medicine, and the medicine is used to perform at least one of sedimentation treatment and purification treatment on the liquid in the first container.

[0012] In some possible implementations, the indirect evaporative cooling unit further includes: a second filter element, the filtering accuracy of the second filter element is smaller than the filtering accuracy of the first filter element, and the second filter element is located inside the second container.

[0013] In some possible implementations, the indirect evaporative cooling device further includes a valve, which is located in at least one of the downstream delivery pipeline of the first container and the downstream delivery pipeline of the second container, and is used to control at least one of the flow direction and flow rate of the liquid.

[0014] In some possible implementations, the indirect evaporative cooling device includes a plurality of indirect evaporative cooling units, which are arranged in parallel and connected to the first container via a converging delivery pipeline.

[0015] When multiple indirect evaporative cooling units are arranged in parallel, multiple second containers are designed in a distributed manner, and a first container with a larger volume can be used to centrally treat the sewage in multiple second containers at the same time. This is more conducive to reducing the maintenance frequency of the filter element, and the first container centrally treats the sewage from multiple different second containers, which has a larger operating space.

[0016] In some possible implementations, the indirect evaporative cooling device includes: a plurality of first containers, the plurality of first containers are arranged in parallel, and the plurality of first containers can operate alternately with each other for backup.

[0017] On the other hand, an embodiment of the utility model provides a data center, comprising: any of the above-mentioned indirect evaporative cooling devices and a computer room; the shell of the indirect evaporative cooling device has an indoor return air outlet and an indoor supply air outlet respectively connected to the interior of the computer room.

[0018] The data center provided by the embodiment of the utility model has all the advantages of the indirect evaporative cooling device involved above. The heat in the computer room is effectively exchanged with cold heat through the indirect evaporative cooling device, thereby realizing cooling of the data center. Moreover, the spraying based on the indirect evaporative cooling device can effectively increase the free cooling time and reduce the energy consumption of the refrigeration system of the data center. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic structural diagram of an exemplary indirect evaporative cooling device provided in an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A partial structural schematic diagram of the indirect evaporative cooling device shown;

[0021] Figure 3A schematic structural diagram of another exemplary indirect evaporative cooling device provided in an embodiment of the utility model;

[0022] Figure 4 A schematic structural diagram of another exemplary indirect evaporative cooling device provided in an embodiment of the utility model;

[0023] Figure 5 A schematic structural diagram of an exemplary indirect evaporative cooling device including a compression supplementary cooling unit provided in an embodiment of the utility model.

[0024] The reference numerals represent:

[0025] 100. Indirect evaporative cooling unit;

[0026] 11. Shell; 111. Indoor return air outlet; 112. Indoor air supply outlet; 113. Outdoor fresh air outlet; 114. Outdoor exhaust outlet;

[0027] 12. Spray assembly; 121. Spray pipe; 122. Nozzle;

[0028] 13. Indirect heat exchanger;

[0029] 14. A second container;

[0030] 15. Second delivery pump;

[0031] 16. A second filter element;

[0032] 171. Valve / check valve; 172. Water inlet valve; 173. Drain valve; 174. Three-way valve;

[0033] 200. a first container;

[0034] 300, first filter element;

[0035] 400, a first delivery pump;

[0036] 500, compression cooling unit;

[0037] 51. Compressor; 52. Condenser; 53. Expansion valve; 54. Evaporator; 55. Exhaust fan; 56. Supply fan. DETAILED DESCRIPTION

[0038] In the description of the embodiments of the present invention, the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. When the product is placed in different postures, the direction may change, and therefore it cannot be understood as a limitation on the embodiments of the present invention.

[0039] Since data centers run electronic information equipment all year round and refrigeration units consume a lot of electricity, energy-saving measures need to be taken to reduce the energy consumption of data centers and achieve good energy-saving effects. Indirect Evaporative Cooling (IEC) technology is usually used for energy-saving refrigeration in data centers, thereby using low-temperature outdoor air to cool the high-temperature air generated by the data center.

[0040] Normally, the indirect evaporative cooling unit uses a spray module to spray the outside of the heat exchanger to reduce the temperature of the air outside the heat exchanger. The spray module includes a spray component, an open water tank and a conveying component, wherein the spray component is located on one side of the heat exchanger, the open water tank is located on the other side of the heat exchanger, and the conveying component connects the spray component and the open water tank, so that the conveying component conveys the water in the open water tank to the spray component for spraying, and the open water tank receives the spray water flowing down the heat exchanger. The open design of the open water tank makes it easy for dust, flocs and other impurities to enter its interior, so currently a filter is set inside the open water tank, and the water is filtered and processed by the filter and then conveyed to the spray component through the conveying component.

[0041] However, the open water tank is usually arranged inside the shell of the indirect evaporative cooling device, which makes it inconvenient to maintain and update the filter inside it, which may lead to insufficient maintenance frequency and cause clogging of the spray assembly. On the other hand, even if the filter is maintained frequently, since the open water tank is inside the shell of the indirect evaporative cooling device with a small space, the operation is time-consuming and laborious, which will lead to high maintenance costs.

[0042] In view of the technical problems existing in the related art, the embodiment of the utility model provides an indirect evaporative cooling device, as shown in the attached Figure 1 As shown, the indirect evaporative cooling device comprises: at least one indirect evaporative cooling unit 100, a first container 200, a first filter element 300 and a first delivery pump 400. The indirect evaporative cooling unit 100 comprises: a housing 11, and a spray assembly 12, an indirect heat exchanger 13, a second container 14 and a second delivery pump 15 located inside the housing 11. The first container 200 is located outside the housing 11, the first filter element 300 is located inside the first container 200, the second container 14, the first container 200 and the spray assembly 12 are connected in sequence through a delivery pipeline, the outlet end of the spray assembly 12 faces the open end of the second container 14, the indirect heat exchanger 13 is located between the outlet end of the spray assembly 12 and the open end of the second container 14; the first delivery pump 400 is located on the delivery pipeline between the first container 200 and the spray assembly 12, and the second delivery pump 15 is located on the delivery pipeline between the second container 14 and the first container 200.

[0043] The working principle of the indirect evaporative cooling device provided by the embodiment of the utility model is as follows: the water stored in the second container 14 is pumped into the first container 200 by the second delivery pump 15, and the first filter element 300 is located in the first container 200 to filter the liquid entering the first container 200, so that the first container 200 provides the filtered liquid to the downstream delivery pipeline, and the filtered liquid is pumped to the spray assembly 12 by the first delivery pump 400, so that the spray assembly 12 provides the spray liquid, and the spray liquid is, for example, spray water, and the spray water sprays the indirect heat exchanger 13 to achieve heat exchange. After passing through the indirect heat exchanger 13, the spray water is finally collected by the open second container 14 and enters the next cycle. Among them, after the spray water sprays the indirect heat exchanger 13, it provides the secondary air for direct evaporative cooling, and the secondary air passes through the indirect heat exchanger 13 to perform isohumidification cooling on the air to be treated (called primary air).

[0044] The indirect evaporative cooling device provided by the embodiment of the utility model centrally stores and filters sewage by adding a first container 200 located outside the indirect evaporative cooling unit 100. Compared with the problem that the second container 14 must be arranged below the spray assembly 12, the first container 200 has greater flexibility in position arrangement and can be arranged outside the shell 11 of the indirect evaporative cooling device. The first container 200 is not limited to a space of smaller size, has a larger operating space, and is conducive to making the volume of the first container 200 larger. In this way, compared with maintaining or updating the filter element inside the second container 14, the operation of maintaining or updating the first filter element 300 inside the first container 200 with a larger operating space is more convenient, time-saving, and labor-saving, which facilitates high-frequency maintenance of the first filter element 300 without increasing maintenance costs, and has a larger operating space.

[0045] In some examples, the flow rate of the second delivery pump 15 corresponding to the second container 14 of the indirect evaporative cooling unit 100 is made greater than the flow rate of the first delivery pump 400 corresponding to the first container 200 .

[0046] By designing the flow rate of the second delivery pump 15 to be relatively large, not only can its ability to pump sewage be improved, ensuring that the sewage inside the open second container 14 is fully and completely delivered to the first container 200, but also the impeller clearance of the second delivery pump 15 with a relatively large flow rate is usually relatively large, which can also prevent the pump body from being blocked by impurities in the sewage, preventing air sealing and stagnation. The first delivery pump 400 delivers filtered spray water, and although its flow rate can be designed to be relatively small, the risk of the pump body being blocked can also be avoided.

[0047] As described above, the flow rate of the second delivery pump 15 is greater than the flow rate of the first delivery pump 400. Furthermore, the head of the second delivery pump 15 can also be made smaller than the head of the first delivery pump 400, because the second delivery pump 15 focuses on transferring sewage from the second container 14 to the first container 200, and the first delivery pump 400 focuses on delivering water in the first container 200 to the spray assembly 12 which is farther away. The above-mentioned head design of the two is more conducive to meeting the above requirements.

[0048] The second delivery pump 15 and the first delivery pump 400 may both include a pump casing and an impeller located inside the pump casing. Based on the above flow and head designs of the second delivery pump 15 and the first delivery pump 400, it can be seen that the matching clearance between the impeller and the pump casing flow channel in the second delivery pump 15 is small, so that its structure is compact and a higher head is obtained. The matching clearance between the impeller and the pump casing flow channel in the first delivery pump 400 is large, so that its volume is large and a higher flow rate is obtained, and at the same time, a stronger sewage pumping capacity and anti-impurity capacity are obtained (because the liquid and the pump bearing can be separated).

[0049] In combination with the above descriptions of the second delivery pump 15 and the first delivery pump 400 , in some examples, the embodiments of the utility model may enable the second delivery pump 15 to include a sewage pump, and the first delivery pump 400 to include a water pump.

[0050] Both the sewage pump and the water pump can adopt the currently known related pump products. The sewage pump has the advantages of large flow and strong anti-impurity ability, and can effectively prevent gas sealing and stagnation. The water pump can be, for example, a clean water pump, which has the advantages of high head and can provide high-pressure water power. In the embodiment of the utility model, the two perform their respective functions and cooperate to obtain a stronger sewage transfer effect and clean water delivery effect.

[0051] In the embodiment of the utility model, the second delivery pump 15 can be arranged in the delivery pipeline located inside the second container 14 (see Figure 1 ), can also be arranged on the delivery pipeline between the second container 14 and the first container 200 (see Figure 3 ), both methods can achieve the transfer of sewage in the second container 14 to the first container 200.

[0052] Considering that the first filter element 300 is located in the first container 200 , in order to ensure that the liquid pumped by the first delivery pump 400 is filtered liquid, the embodiment of the utility model arranges the first delivery pump 400 on the delivery pipeline downstream of the first container 200 .

[0053] The second container 14 and the first container 200 are both used to store cooling liquid, such as water, and both can be in the form of a box, a tray, a basin, etc., and their specific structures are not limited here. It is only necessary that the second container 14 is conveniently placed in a smaller space in the indirect evaporative cooling device, and the volume of the first container 200 is as large as possible. For example, the second container 14 can be a tray, which is conducive to making the area of ​​its open end large enough to reliably collect water from the spray assembly 12. The first container 200 can be a box, which is conducive to obtaining a larger storage volume.

[0054] For example, in order to facilitate the operations of water replenishment, water intake and water discharge to the second container 14 and the first container 200, as shown in the attached Figure 1 As shown, a water inlet valve 172 and a drain valve 173 can be set on the walls of the second container 14 and the first container 200. For example, the water inlet valve 172 is set at the upper part of the side wall of the container, and the drain valve 173 is set at the lower part or even the bottom of the side wall of the container, so as to facilitate the smooth and sufficient discharge of water based on gravity.

[0055] In the embodiment of the present invention, the first container 200 can be open or closed. Figure 1 -Attached Figure 3 As shown, it illustrates that the first container 200 is a closed container, that is, a cover is provided at the open end of the first container 200 to avoid the introduction of additional impurities from the outside into the container, which is beneficial to reducing the filtering load of the first filter element 300.

[0056] In the embodiment of the utility model, the volume of the first container 200 can be made larger than the volume of the second container 14, and / or the first container 200 contains a medicine, and the medicine is used to perform at least one of sedimentation treatment and purification treatment on the liquid in the first container 200.

[0057] By designing the volume of the first container 200 to be larger, it is not only convenient to use one first container 200 to collect sewage discharged from multiple second containers 14 at the same time, but also convenient for the sewage in the first container 200 to undergo sufficient natural sedimentation (physical sedimentation) or artificial sedimentation (chemical sedimentation), thereby reducing the workload of the first filter element 300 and extending its service life.

[0058] The first container 200 may also contain a chemical for performing at least one of sedimentation treatment and purification treatment on the liquid in the first container 200. For example, the chemical may be a flocculant to facilitate sedimentation treatment of the sewage in the first container 200. Alternatively, the chemical may be alum, disinfectant, hypochlorous acid, etc. to facilitate purification treatment of the sewage in the first container 200.

[0059] In the embodiment of the utility model, the first filter element 300 can separate the inner cavity of the first container 200 into a front filtration cavity and a rear filtration cavity. The front filtration cavity is used to accommodate sewage from the second container 14, and the rear filtration cavity is used to accommodate water after purification and filtration. The outlet end of the first container 200 is connected to the rear filtration cavity, thereby ensuring that the liquid discharged from the first container 200 is filtered water, or, water that has been purified and filtered in sequence.

[0060] In some examples, such as the attached Figure 3 As shown, the indirect evaporative cooling unit 100 further includes: a second filter element 16 , the filtering accuracy of the second filter element 16 is less than the filtering accuracy of the first filter element 300 , and the second filter element 16 is located inside the second container 14 .

[0061] Since the requirements for the filtering accuracy of the second filter element 16 are relatively low, the second filter element 16 can only perform preliminary filtering of the obvious large particle impurities in the second container 14, which is not only conducive to preventing the second delivery pump 15 from being blocked by large particle impurities, but also conducive to reducing the operating load of the downstream first filter element 300. Moreover, the filtering accuracy of the second filter element 16 can be designed to be relatively low. Compared with the first filter element 300, in the same time period, the maintenance frequency of the second filter element 16 is significantly lower than that of the first filter element 300, so that the maintenance cost will not be significantly increased as a whole. Compared with the slight increase in maintenance cost, the maintenance cost reduced by the reduced operating load of the first filter element 300 is more beneficial.

[0062] In some examples, such as the attached Figure 1 -Attached Figure 4 As shown, the indirect evaporative cooling device provided by the embodiment of the utility model further includes a valve 171, which is located in at least one of the downstream delivery pipeline of the first container 200 and the downstream delivery pipeline of the second container 14, and is used to control at least one of the flow direction and flow rate of the liquid.

[0063] For example, the valve 171 may be a one-way valve 171 to ensure one-way flow of the liquid, or the valve 171 may be a solenoid valve to control the liquid delivery flow rate based on its opening. In the embodiment of the utility model, the valve 171 may include at least one of a one-way valve 171 and a solenoid valve.

[0064] For example, the valve 171 is a one-way valve 171. Figure 1 As illustrated, the valve 171 may be disposed on the delivery pipeline between the second delivery pump 15 and the first container 200 , and the valve 171 may also be disposed on the delivery pipeline between the first delivery pump 400 and the spray assembly 12 .

[0065] In some examples, at least one of a hydrophobic layer, an oleophobic layer, and an anti-slip layer may be provided on the inner wall of the delivery pipeline to reduce the adhesion of impurities to the inner wall of the delivery pipeline.

[0066] In the embodiment of the utility model, one first container 200 can correspond to one indirect evaporative cooling unit 100, that is, one second container 14 (not shown in the figure), or one first container 200 can correspond to multiple indirect evaporative cooling units 100, that is, multiple second containers 14, that is, 1 to N (see Figure 1 ), it is also possible to make multiple first containers 200 correspond to multiple indirect evaporative cooling units 100, that is, multiple second containers 14, that is, N2 to N1 (see Figure 4 ).

[0067] In combination with any of the above-mentioned indirect evaporative cooling devices, in some examples, such as the attached Figure 1 -Attached Figure 4 As shown, it may include a plurality of indirect evaporative cooling units 100 , which are arranged in parallel and connected to the first container 200 through a merged transport pipeline.

[0068] When multiple indirect evaporative cooling units 100 are arranged in parallel, multiple second containers 14 are also arranged in parallel. At this time, the multiple second containers 14 are of distributed design, and a larger first container 200 can be used to correspond to multiple second containers 14 at the same time, that is, the first container 200 plays a role in centralized treatment of sewage in multiple second containers 14, and the volume of the first container 200 can be adaptively designed according to the volume of the second container 14 to be treated.

[0069] The related art sets the filter element in each second container 14, so the maintenance frequency of the filter element is positively correlated with the number of second containers 14, resulting in a significant increase in the maintenance frequency of the filter element. The maintenance frequency of the first filter element 300 arranged inside the first container 200 is positively correlated with the number of first containers 200, and the embodiment of the utility model can make one or a small number of multiple first containers 200 correspond to multiple second containers 14, and centrally treat the sewage in multiple second containers 14. Obviously, this is more conducive to reducing the maintenance frequency of the filter element. Moreover, the first container 200 centrally treats the sewage from multiple different second containers 14, which has a larger operating space.

[0070] In some examples, such as the attached Figure 4 As shown, the indirect evaporative cooling device provided by the embodiment of the utility model may further include: a plurality of first containers 200, and the plurality of first containers 200 are arranged in parallel.

[0071] The number of the first containers 200 may be two, three, four or more, and the plurality of first containers 200 are arranged in parallel and are each independently connected to the indirect evaporative cooling unit 100 .

[0072] Multiple first containers 200 are arranged in parallel, and they operate independently. This includes allowing multiple first containers 200 to operate simultaneously, and also allowing multiple first containers 200 to operate alternately for backup. For example, some first containers 200 can be operated while other first containers 200 are not operated. When the working part of the first container 200 and the first filter element 300 therein need maintenance, the operation can be stopped, and at the same time, the part of the first container 200 that was not working before can be operated, thereby alternating.

[0073] A multi-way valve can be used to connect the delivery pipelines upstream of the plurality of first containers 200, thereby realizing the parallel arrangement of the plurality of first containers 200 and the connection of the plurality of first containers 200 arranged in parallel with the second container 14. Figure 4 As shown, it illustrates that the number of the first containers 200 is two. In this case, the multi-way valve can be a three-way valve 174 .

[0074] For any of the above-mentioned indirect evaporative cooling devices, the spray assembly 12 can adopt any currently known spray structure. An exemplary spray assembly 12 is shown in the attached figure. Figure 1 As shown, it may include: a spray pipe 121, and a nozzle 122 disposed on the spray pipe 121. The number of the nozzles 122 may be one or more, for example, a plurality of nozzles 122 are disposed, and the plurality of nozzles 122 are spaced apart along the axial direction of the spray pipe 121. The spray pipe 121 is connected to the end of the conveying pipeline through its open end, so that the spray liquid, such as spray water, from the conveying pipeline enters the spray pipe 121 and is distributed to each nozzle 122, and performs a spraying operation through the nozzles 122.

[0075] Exemplarily, one of the two ends of the spray pipe 121 distributed in the axial direction is closed, and the other end serves as its open end, or both ends of the spray pipe 121 distributed in the axial direction are closed, and on the tube body of the spray pipe 121, for example, the middle area of ​​the tube body is opened as its open end.

[0076] The indirect heat exchanger 13 involved in the embodiment of the utility model refers to a non-direct contact heat exchanger, and two air passages that are not connected to each other are arranged inside the indirect heat exchanger 13, so that the primary air and the secondary air are indirectly contacted and heat exchanged through the partition wall of the indirect heat exchanger 13. The indirect heat exchanger 13 can adopt the currently known heat exchange core type, which includes but is not limited to: a plate-fin indirect evaporative cooling core, a tube indirect evaporative cooling core, a plate-tube indirect evaporative cooling core, etc.

[0077] The housing 11 involved in the indirect evaporative cooling unit 100 of the embodiment of the utility model has an indoor return air outlet 111, an indoor supply air outlet 112, an outdoor fresh air outlet 113 and an outdoor exhaust air outlet 114.

[0078] In some examples, such as the attached Figure 5 As shown, the indirect evaporative cooling device provided by the embodiment of the utility model may also include a compression cooling unit 500, which may include, for example: a compressor 51, a condenser 52, an expansion valve 53, an evaporator 54, an exhaust fan 55, a blower 56, etc. The compressor 51, the condenser 52, the expansion valve 53, and the evaporator 54 are connected end to end in sequence through pipelines, the exhaust fan 55 is arranged facing the condenser 52, and the blower 56 is arranged facing the evaporator 54.

[0079] When in use, outdoor fresh air passes through the above-mentioned indirect heat exchanger 13 and condenser 52 in sequence, and is discharged to the outdoor exhaust port 114 on the shell 11 by the exhaust fan 55 to provide outdoor exhaust air. Indoor return air passes through the above-mentioned indirect heat exchanger 13 and evaporator 54 in sequence, and is discharged to the indoor air supply port 112 on the shell 11 by the air supply fan 56 to provide indoor air supply with lower temperature for use scenarios such as data centers.

[0080] The indirect evaporative cooling device provided by the embodiment of the utility model, when applied to scenes such as data centers, can pre-cool fresh air, reduce mechanical refrigeration load, increase the supply air temperature difference, and thus significantly reduce artificial refrigeration capacity.

[0081] In combination with the technical solutions of the indirect evaporative cooling device involved above, the indirect evaporative cooling device provided by the embodiment of the utility model is further illustrated below in combination with specific examples.

[0082] Example 1

[0083] As attached Figure 1As shown, this example 1 provides an indirect evaporative cooling device, which includes: a plurality of indirect evaporative cooling units 100 arranged in parallel, a first container 200, a first filter element 300 and a first delivery pump 400. Each indirect evaporative cooling unit 100 includes: a shell 11, and a spray assembly 12, an indirect heat exchanger 13, a second container 14 and a second delivery pump 15 located inside the shell 11. Among them, the first container 200 is located outside the shell 11, the first filter element 300 is located inside the first container 200, the second container 14, the first container 200, and the spray assembly 12 are connected in sequence through a delivery pipeline, the outlet end of the spray assembly 12 faces the open end of the second container 14, and the indirect heat exchanger 13 is located between the outlet end of the spray assembly 12 and the open end of the second container 14; the first delivery pump 400 is located on the delivery pipeline between the first container 200 and the spray assembly 12, and the second delivery pump 15 is located on the delivery pipeline between the second container 14 and the first container 200.

[0084] in, Figure 1 It is illustrated that one first container 200 is used to correspond to three indirect evaporative cooling units 100 , and the flow rate of the second delivery pump 15 is greater than the flow rate of the first delivery pump 400 . For example, the second delivery pump 15 is a sewage pump, and the first delivery pump 400 is a water pump.

[0085] The downstream delivery pipeline of the first container 200 and the downstream delivery pipeline of the second container 14 are both provided with a one-way valve 171, and the walls of the second container 14 and the first container 200 are both provided with an inlet valve 172 and a drain valve 173. The second container 14 is open, and the first container 200 is closed. The volume of the first container 200 is greater than that of the second container 14. The first container 200 may optionally contain flocculants, alum, disinfectant, hypochlorous acid and other agents.

[0086] For the solution described in Example 1, the second container 14 is open to connect to the atmospheric airflow, and the first container 200 is closed to avoid direct contact with the external environment; the second container 14 and the first container 200 are both provided with an inlet valve 172 and a drain valve 173 to ensure free and convenient water filling and sewage and water discharge.

[0087] The second container 14 is matched with a sewage pump, which can work at the bottom of the second container 14 and avoid the problem of the pump body being blocked by impurities or air sealing. Under the pumping operation of the sewage pump, the sewage is uniformly transported to the first container 200 for filtering, and the filtered water is pumped based on the water pump. The filtered water can avoid the problem of dirt blockage or air sealing of the water pump. The first filter element 300 is configured in the first container 200 and cooperates with the water pump. The water pump has a high head, ensuring that pressurized spray water is provided to the spray assembly 12, and ensuring that the operation process is stable and reliable.

[0088] The sewage is stored and filtered by adding a first container 200 outside the indirect evaporative cooling unit 100, and one first container 200 is used to treat the sewage in the second containers 14 of a plurality of indirect evaporative cooling units 100.

[0089] On the one hand, the position arrangement of the first container 200 is more flexible, the first container 200 is not limited to a space of smaller size, and the volume of the first container 200 is designed to be larger. The operation of maintaining or updating the first filter element 300 inside the first container 200 is more convenient, time-saving, and labor-saving, which facilitates high-frequency maintenance of the first filter element 300 without increasing maintenance costs. On the other hand, using one first container 200 to centrally treat sewage in multiple indirect evaporative cooling units 100 is more conducive to reducing the maintenance frequency of the filter element. Moreover, the first container 200 centrally treats sewage from multiple different second containers 14, which has a larger operating space.

[0090] Example 2

[0091] As attached Figure 3 As shown, this second example provides an indirect evaporative cooling device, which differs from the indirect evaporative cooling device of the first example in that a second filter element 16 is added inside the second container 14 .

[0092] The second filter element 16 is arranged in the second container 14 for coarse filtration, that is, for preliminary filtration of obvious large particle impurities in the second container 14 , which is beneficial to reduce the working load of the first filter element 300 .

[0093] Example 3

[0094] As attached Figure 4 As shown, Example 3 provides an indirect evaporative cooling device, which is different from the indirect evaporative cooling device of Example 1 in that the first container 200 is configured as a plurality of first containers 200 arranged in parallel, for example Figure 4 It is illustrated that two first containers 200 are arranged in parallel.

[0095] A plurality of first containers 200 are arranged in parallel for alternate use, thereby making the indirect evaporative cooling device more flexible in operation, and sewage treatment and clean water treatment can be operated alternately, making the device more applicable.

[0096] On the other hand, an embodiment of the utility model further provides a data center, which includes a computer room and the above-mentioned indirect evaporative cooling device. The shell 11 of the indirect evaporative cooling device has an indoor return air outlet 111 and an indoor supply air outlet 112 which are respectively connected to the interior of the computer room.

[0097] When in use, the hot air in the machine room enters the indirect evaporative cooling unit 100 through the indoor return air outlet 111 to cool the hot air entering the indirect heat exchanger 13, and then the cold air is sent back to the machine room based on the indoor supply air outlet 112, thereby performing heat and cold exchange on the hot air in the machine room, thereby achieving the effect of cooling the machine room. In addition, the outdoor fresh air is sucked in based on the outdoor fresh air outlet 113, and then discharged to the outside from the outdoor exhaust outlet 114 through the indirect heat exchanger 13. This part of the fresh air is used to take away the heat of the indirect heat exchanger 13, thereby accelerating the heat exchange efficiency.

[0098] The data center provided by the embodiment of the utility model has all the advantages of the indirect evaporative cooling device involved above. The heat in the computer room is effectively exchanged with cold heat through the indirect evaporative cooling device, thereby realizing cooling of the data center. Moreover, the spraying based on the indirect evaporative cooling device can effectively increase the free cooling time and reduce the energy consumption of the refrigeration system of the data center.

[0099] The above description is only for the purpose of facilitating the technical solution of the present invention to be understood by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An indirect evaporative cooling device, characterized in that: The indirect evaporative cooling device comprises: at least one indirect evaporative cooling unit (100), a first container (200), a first filter element (300) and a first delivery pump (400); The indirect evaporative cooling unit (100) comprises: a shell (11), and a spray assembly (12), an indirect heat exchanger (13), a second container (14), and a second delivery pump (15) located inside the shell (11); The first container (200) is located outside the shell (11), the first filter element (300) is located inside the first container (200), the second container (14), the first container (200), and the spray assembly (12) are connected in sequence through a delivery pipeline, the outlet end of the spray assembly (12) faces the open end of the second container (14), and the indirect heat exchanger (13) is located between the outlet end of the spray assembly (12) and the open end of the second container (14); The first delivery pump (400) is located on the delivery pipeline between the first container (200) and the spray assembly (12), and the second delivery pump (15) is located on the delivery pipeline between the second container (14) and the first container (200).

2. The indirect evaporative cooling device according to claim 1, characterized in that: The flow rate of the second delivery pump (15) is greater than the flow rate of the first delivery pump (400).

3. The indirect evaporative cooling device according to claim 2, characterized in that: The first delivery pump (400) comprises a water pump, and the second delivery pump (15) comprises a sewage pump.

4. The indirect evaporative cooling device according to claim 1, characterized in that: The first container (200) is a closed container, and / or, The volume of the first container (200) is greater than the volume of the second container (14).

5. The indirect evaporative cooling device according to claim 1, characterized in that: The first container (200) contains a reagent, and the reagent is used to perform at least one of sedimentation treatment and purification treatment on the liquid in the first container (200).

6. The indirect evaporative cooling device according to claim 1, characterized in that: The indirect evaporative cooling unit (100) further comprises: a second filter element (16), the filtering accuracy of the second filter element (16) being lower than the filtering accuracy of the first filter element (300), and the second filter element (16) being located inside the second container (14).

7. The indirect evaporative cooling device according to claim 1, characterized in that: The indirect evaporative cooling device further comprises a valve (171), wherein the valve (171) is located in at least one of the downstream delivery pipeline of the first container (200) and the downstream delivery pipeline of the second container (14), and is used to control at least one of the flow direction and flow rate of the liquid.

8. The indirect evaporative cooling device according to any one of claims 1 to 7, characterized in that: The indirect evaporative cooling device comprises a plurality of indirect evaporative cooling units (100), wherein the plurality of indirect evaporative cooling units (100) are arranged in parallel and connected to the first container (200) via a converging delivery pipeline.

9. The indirect evaporative cooling device according to claim 8, characterized in that: The indirect evaporative cooling device comprises: a plurality of first containers (200), wherein the plurality of first containers (200) are arranged in parallel.

10. A data center, characterized in that: The data center comprises: the indirect evaporative cooling device and a computer room according to any one of claims 1 to 9; The shell (11) of the indirect evaporative cooling device has an indoor return air port (111) and an indoor supply air port (112) which are respectively connected to the interior of the machine room.

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