Dry cooler and cooling system

Abstract

This disclosure provides a dry cooler and a cooling system. The dry cooler includes a fan and at least two heat exchangers stacked along its height. Each heat exchanger includes a pipe and an air inlet. The pipe is disposed within the heat exchanger for supplying a first cooling medium. The top heat exchanger also has an air outlet, which communicates with the air inlet. The fan is disposed at the air outlet to drive external air from the air inlet to the pipe and then exhaust it through the air outlet. Thus, by increasing the heat exchange area vertically, the heat exchange capacity per unit area is increased, thereby meeting the heat dissipation requirements of high-power levels within a limited deployment space.

Description

Technical Field

[0001] This document relates to the field of equipment cooling technology, and in particular to a dry cooler and cooling system. Background Technology

[0002] Data centers, as the "computing heart" of the digital economy, are facing unprecedented thermal management challenges. With the rapid evolution of technologies such as Artificial Intelligence (AI), big data, and cloud computing, massive computing tasks are driving a significant increase in the power density of data centers, resulting in enormous waste heat accumulation during equipment operation. If this heat cannot be dissipated in time, it can easily lead to hardware throttling or even system crashes. Therefore, auxiliary cooling measures are needed to ensure the stable operation of data centers. Summary of the Invention

[0003] The purpose of the embodiments in this specification is to provide a dry cooler and cooling system that can meet the heat dissipation requirements of high power levels in a limited deployment space.

[0004] To achieve the above objectives, the embodiments in this specification adopt the following technical solutions: In a first aspect, a dry cooler is provided, comprising a fan and at least two heat exchangers, the at least two heat exchangers being stacked along the height direction; The heat exchanger includes pipes and an air inlet. The pipes are installed inside the heat exchanger for supplying a first cooling medium. The top heat exchanger is also provided with an air outlet, which is connected to the air inlet. The fan is located at the air outlet to drive external air from the air inlet to the duct and then discharge it through the air outlet.

[0005] In a second aspect, a cooling system is provided, the cooling system including at least one dry cooler, the dry cooler including the dry cooler provided in the first aspect; the at least one dry cooler is arranged in a direction perpendicular to the height direction.

[0006] In the embodiments described in this specification, external cold air, driven by a fan, enters the heat exchanger through its inlet and flows into the pipes within the heat exchanger. A first cooling medium flows within the pipes, and through contact with the cold air, heat exchange occurs between the first cooling medium and the cold air. The cold air absorbs the heat released by the first cooling medium, its temperature rises, and it becomes hot air, which is then discharged from the dry cooler through the outlet. Furthermore, because the top heat exchanger has an outlet, external cold air can flow into the pipes of all heat exchangers, significantly increasing the heat exchange area of ​​the dry cooler and thus enhancing its heat exchange capacity.

[0007] Secondly, these heat exchangers are arranged in a stacked manner. This arrangement increases the heat exchange area by improving the utilization of vertical space, without increasing the footprint of the dry cooler. This significantly increases the heat exchange capacity per unit area, ensuring that the heat dissipation requirements of high power levels are met within a limited deployment space.

[0008] In addition, the stacked arrangement also gives the dry cooler the characteristic of modular disassembly, supporting separate transportation. This not only improves the flexibility and convenience of transportation, but also effectively reduces the restrictions on road and hoisting conditions. Attached Figure Description

[0009] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram illustrating an exemplary application scenario of a dry cooler; Figure 2 A schematic diagram of the structure of a dry cooler provided in one embodiment; Figure 3 A schematic diagram of a dry cooler provided for another embodiment; Figure 4 A schematic diagram of a cooling system provided in one embodiment; Figure 5 A schematic diagram of a cooling system provided for another embodiment.

[0010] Explanation of reference numerals in the attached figures: 100. Dry cooler; 110. Fan; 120. Heat exchanger; 121. Piping; 122. Air inlet; 123. Air outlet; 124. Spray assembly; 125. First baffle; 200. Cooling system; 210. Second baffle. Detailed Implementation

[0011] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this document.

[0012] The term "comprising" and its variations as used in this document are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description. The term "in response to" indicates that the performed operation depends on a condition or state. When the dependent condition or state is met, one or more operations may be performed in real time or with a set delay. Unless otherwise specified, there is no restriction on the order in which multiple operations are performed.

[0013] It should be noted that the concepts of "first" and "second" mentioned in this document are used only to distinguish different devices, modules or units, and are not used to restrict the order of functions performed by these devices, modules or units or their interdependencies.

[0014] It should be noted that the terms "one" and "more" used in this document are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more".

[0015] The names of messages or information exchanged between multiple devices in the embodiments of this document are for illustrative purposes only and are not intended to limit the scope of these messages or information.

[0016] A dry cooler is a heat exchanger that relies on forced air convection for heat dissipation. It is suitable for cold northern regions and areas with little water, and is one of the important cold sources for data center cooling.

[0017] Figure 1 A schematic diagram illustrating an exemplary application environment for a dry cooler is shown. In this scenario, the dry cooler is installed outside the data center, such as on the roof of the building housing the data center. Cooling equipment is installed inside the data center. The cooling medium exchanges heat with the cold outdoor air through the dry cooler, naturally cooling it down. The dry cooler then introduces the cooled medium into the cooling equipment, which further cools the data center. The cooling medium may include a fluid with heat exchange capabilities, such as water or an ethylene glycol solution. The physical state of the cooling medium may be liquid or gaseous.

[0018] In some cases, cooling equipment can include air-cooled equipment, such as air conditioning units. Air-cooled equipment blows out cool air to cool the equipment within the data center. Inside the air-cooled equipment are coils through which a cooling medium flows. The cooling medium absorbs heat and heats up; the heated medium is then pumped to a cooler, cooled down, and then returned to the air-cooled equipment.

[0019] In other cases, cooling equipment may include liquid cooling. Liquid cooling equipment may include multiple cold plates that are installed on servers in the data center. Cooling medium flows through the cold plates, absorbing the heat generated by the servers. After absorbing heat, the cooling medium heats up and is then pumped to a dry cooler, where it is cooled before being returned to the liquid cooling equipment.

[0020] As mentioned earlier, with the rapid evolution of technologies such as AI, big data, and cloud computing, massive computing tasks are driving a significant increase in the power density of data centers, resulting in substantial waste heat accumulation during equipment operation. In this context, dry coolers typically need to achieve MW-level heat exchange capacity to meet cooling demands. However, due to the relatively low heat dissipation density (i.e., heat exchange capacity per unit area) of dry coolers, achieving MW-level heat exchange often requires increasing the number of dry coolers. Since dry coolers themselves occupy a large area, while deployment space is limited, this "space-for-performance" approach faces significant challenges in practical applications.

[0021] Therefore, embodiments of this specification provide a dry cooler and a cooling system that increases the heat exchange area per unit floor space by increasing the heat exchange area in the vertical space, thereby meeting the heat dissipation requirements of high power levels within a limited deployment area.

[0022] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0023] Figure 2 This is a schematic diagram of the structure of a dry cooler 100 provided in one embodiment. Figure 2 As shown, the dry cooler 100 includes a fan 110 and at least two heat exchangers 120, which are stacked along the height direction.

[0024] The heat exchanger 120 includes a pipe 121 and an air inlet 122. The pipe 121 is disposed inside the heat exchanger and is used to supply the flow of the first cooling medium. The top heat exchanger 120 is also provided with an air outlet 123, which is connected to the air inlet 122 of the heat exchanger 120.

[0025] The fan 110 is located at the air outlet 123 to drive external air from the air inlet 122 to the duct 121 and then discharge it through the air outlet 123.

[0026] The first cooling medium may include a fluid with heat exchange function, such as water or ethylene glycol solution. The physical state of the cooling medium may be liquid or gas.

[0027] As can be seen, external cold air, driven by the fan 110, enters the heat exchanger 120 through the air inlet 122 and flows into the pipes 121 within the heat exchanger 120. The first cooling medium flows within the pipes 121, and through contact with the cold air, heat exchange is achieved between the first cooling medium and the cold air within the pipes 121. The cold air absorbs the heat released by the first cooling medium, its temperature rises, forming hot air, which is then discharged from the dry cooler 100 through the air outlet 123. Furthermore, since the air outlet 123 is provided on the top-level heat exchanger 120, external cold air can flow to all the pipes 121, significantly increasing the heat exchange area of ​​the dry cooler 100, thereby improving the heat exchange capacity of the dry cooler 100.

[0028] Secondly, these heat exchangers 120 are arranged in a stacked manner. This arrangement allows the heat exchange area to be increased by improving the utilization of vertical space, without increasing the floor area of ​​the dry cooler 100. This significantly increases the heat exchange capacity per unit floor area, ensuring that the heat dissipation requirements of high power levels are met in a limited deployment space.

[0029] In addition, the stacked arrangement also gives the dry cooler 100 modular disassembly characteristics, supporting separate transportation. This not only improves the flexibility and convenience of transportation, but also effectively reduces the restrictions on road and hoisting conditions.

[0030] In the dry cooler 100, the number of heat exchangers 120 can be set according to actual needs, and there is no limit to this. Figure 2 and Figure 3 The dry cooler 100 includes two heat exchangers 120. The upper heat exchanger 120 is called the first heat exchanger, and the lower heat exchanger 120 is called the second heat exchanger.

[0031] In the dry cooler 100, the air outlet 123 can be set at any appropriate position on the top heat exchanger 120, and the air inlet 122 of the heat exchanger 120 can be set at any appropriate position on the heat exchanger 120, without limitation.

[0032] In some embodiments, the air outlet 123 may be located at the top of the top heat exchanger 120. The air inlet 122 of the bottom heat exchanger 120 is located at the bottom of the bottom heat exchanger 120, and the air inlet 122 of the non-bottom heat exchanger 120 is located on the side of the non-bottom heat exchanger 120.

[0033] For example, such as Figure 2 and Figure 3 As shown, the air outlet 123 is located at the top of the first heat exchanger, the air inlet of the first heat exchanger is located on the side of the first heat exchanger, and the air inlet of the second heat exchanger is located at the bottom of the second heat exchanger. Both the air inlets of the first and second heat exchangers are connected to the air outlet 123.

[0034] Understandably, since hot air has a lower density, it rises naturally. By placing the air outlet 123 at the top of the heat exchanger 120, it conforms to the physical characteristic of hot air rising, effectively utilizing natural buoyancy to exhaust hot air and reducing the energy consumption of the exhaust section of the fan 110. In addition, the bottom-inlet and side-inlet configuration not only avoids short-circuiting of hot and cold air internally, forming a smoother "bottom-inlet-top-outlet" and "side-inlet-top-outlet" airflow path, which helps reduce wind resistance and improve the effective work of the fan 110, but also quickly draws hot air upwards, away from the side air inlet 122, thus preventing "heat backflow" to some extent.

[0035] The dry cooler 100 can be installed on the mounting surface, and there is a space between the bottom of the lowest heat exchanger 120 and the mounting surface.

[0036] This space provides a channel for free airflow. During the operation of the dry cooler 100, cool air can enter from the bottom air inlet, pass through the internal heat dissipation structure, carry away heat, and then be exhausted from the top air outlet. This natural air convection process is smoother due to the existence of the space, which can significantly improve heat dissipation efficiency and maintain the normal operating temperature of the load equipment. In addition, this space makes the installation process of the dry cooler 100 more flexible. For example, installers can choose a suitable installation position and angle according to the actual site conditions without worrying about the bottom fitting perfectly with the mounting surface. This flexibility is particularly suitable for some irregular mounting surfaces or places with limited space, and can better meet different installation needs.

[0037] In the dry cooler 100, the pipes 121 within the heat exchanger 120 can be arranged in various ways, without limitation. In some cases, when the air outlet 123 is located at the top of the top heat exchanger 120, the pipes 121 within the top heat exchanger 120 are arranged along the height direction. It is understood that, since the fan 110 is located at the air outlet 123, this arrangement of the pipes 121 can avoid obstructing the airflow between the air inlet 122 and the air outlet 123 of the lower heat exchanger 120, thereby increasing the ventilation area of ​​the fan 110 and improving the effective work of the fan 110.

[0038] Optionally, such as Figure 2 and Figure 3 As shown, the pipes 121 inside the top heat exchanger 120 are distributed in an I-shape along the height direction. This pipe arrangement can further increase the ventilation area of ​​the fan 110.

[0039] In other cases, the extension direction of the pipe 121 inside the heat exchanger 120 (not the topmost one) intersects with the plane of the air inlet 122 of the heat exchanger 120. This intersection can be understood as perpendicular or inclined at a certain angle. This pipe arrangement can increase the heat exchange area of ​​the pipe 121 inside the heat exchanger 120, further improving the heat exchange capacity of the dry cooler 100.

[0040] Optionally, the duct 121 inside the heat exchanger 120 that is not at the top layer has a V-shaped or W-shaped projection on the side of the heat exchanger. In other words, when viewed from the side of the heat exchanger, the duct 121 appears to be V-shaped or W-shaped.

[0041] like Figure 2 As shown, the lateral projection of the pipes inside the second heat exchanger is V-shaped; that is, when viewed from the side of the second heat exchanger, the internal pipes appear V-shaped. Figure 3 As shown, the projection of the pipes inside the second heat exchanger on the side of the second heat exchanger is W-shaped, that is, when viewed from the side of the second heat exchanger, the pipes inside it are W-shaped.

[0042] It is understandable that this V-shaped or W-shaped arrangement can increase the heat exchange area of ​​the pipe 121 inside the heat exchanger without increasing the air resistance inside the heat exchanger.

[0043] In the dry cooler 100, the pipes 121 within the heat exchanger 120 may include coils in which a first cooling medium flows.

[0044] In the dry cooler 100, the airflow area of ​​the pipes 121 inside the heat exchanger 120 can be adjusted according to actual needs. For example, in order to more fully realize the heat exchange performance of each heat exchanger 120, the airflow area of ​​the pipes 121 inside each heat exchanger 120 can be increased.

[0045] In the dry cooler 100, some or all of the pipes 121 inside the heat exchangers 120 can be connected in parallel, that is, the inlets of the pipes 121 inside these heat exchangers 120 are connected to the outlets of external cooling equipment (such as air conditioning or liquid cooling equipment in a data center), and the outlets of the pipes 121 inside each heat exchanger 120 are connected to the inlets of the external cooling equipment.

[0046] In the dry cooler 100, some or all of the pipes 121 within the heat exchangers 120 may be connected in series. In some embodiments, pipes in at least two layers of heat exchangers 120 are connected. For example, pipes in the first heat exchanger are connected to pipes in the second heat exchanger.

[0047] Specifically, the inlet of the pipe inside the first heat exchanger is connected to the outlet of the pipe inside the second heat exchanger, so that the first cooling medium flows from the second heat exchanger to the first heat exchanger; that is, the first cooling medium is pre-cooled by the second heat exchanger and then further cooled by the first heat exchanger. Alternatively, the outlet of the pipe inside the first heat exchanger is connected to the inlet of the pipe inside the second heat exchanger, so that the first cooling medium flows from the first heat exchanger to the second heat exchanger; that is, the first cooling medium is pre-cooled by the first heat exchanger and then further cooled by the second heat exchanger.

[0048] This enables the dry cooler 100 to have staged heat exchange capability, which helps to further enhance the heat exchange performance of the dry cooler 100.

[0049] In some embodiments, the heat exchanger 120 may further include a spray assembly 124 for spraying a second cooling medium onto the pipes 121 within the heat exchanger 120. Specifically, each heat exchanger 120 may contain a spray assembly 124, or some heat exchangers 120 may contain a spray assembly 124. For example, in Figure 2 and Figure 3 In the dry cooler 100 shown, spray assembly 124 is provided in both the first heat exchanger and the second heat exchanger.

[0050] The second cooling medium may include a fluid with heat exchange function, such as water.

[0051] The spray assembly 124 can be driven to spray a second cooling medium onto the pipe 121. For example, the spray assembly 124 within at least one heat exchanger 120 is driven to operate when the load device meets a first preset condition (e.g., the load of the data center exceeds a preset load value) or when the environmental parameters of the environment where the dry cooler 100 is located meet a second preset condition (e.g., the ambient temperature exceeds a preset temperature). This allows the first cooling medium to cool down rapidly, improving the heat exchange efficiency of the dry cooler 100.

[0052] by Figure 2 and Figure 3 Taking the dry cooler 100 shown as an example, in the above situation, the spray components in the first heat exchanger and the spray components in the second heat exchanger work simultaneously, which can rapidly cool the first cooling medium; or, when the first cooling medium flows from the pipe inside the first heat exchanger to the pipe inside the second heat exchanger, only the spray components in the second heat exchanger can spray the second cooling medium, which can achieve the purpose of saving the second cooling medium while rapidly cooling the first cooling medium; or, when the first cooling medium flows from the pipe inside the second heat exchanger to the pipe inside the first heat exchanger, only the spray components in the first heat exchanger can spray the second cooling medium, which can achieve the purpose of saving the second cooling medium while rapidly cooling the first cooling medium.

[0053] In some embodiments, in order to take into account both the heat exchange requirements of high power level and the compatibility with fans of different performance, the number of heat exchangers 120 can be two, that is, the dry cooler 100 can include a first heat exchanger and a second heat exchanger, with the first heat exchanger stacked on top of the second heat exchanger.

[0054] In this configuration, the air outlet can be located at the top of the first heat exchanger, the air inlet of the first heat exchanger can be located on the side of the first heat exchanger, and the air inlet of the second heat exchanger can be located at the bottom of the second heat exchanger. Here, "side" can include one or more sides of the first heat exchanger. For example, as... Figure 2 and Figure 3 As shown, the air inlet of the first heat exchanger includes a first air inlet and a second air inlet. The first air inlet and the second air inlet are respectively located on the left and right sides of the width direction of the first heat exchanger, that is, the first air inlet and the second air inlet are opposite to each other.

[0055] Understandably, hot air, being less dense, rises naturally. By placing the air outlet at the top of the heat exchanger, which aligns with the physical property of rising hot air, natural buoyancy can be effectively utilized to expel hot air, reducing energy consumption in the fan exhaust section. Furthermore, the bottom-intake design at the bottom and side-intake at the top not only prevents short-circuiting of hot and cold air internally, creating smoother "bottom-in, top-out" and "side-in, top-out" airflow paths, thus reducing wind resistance and improving the fan's effective work, but also quickly draws hot air upwards, away from the side air inlets, preventing "heat backflow" to some extent.

[0056] In some embodiments, such as Figure 2 and Figure 3 As shown, the first heat exchanger may further include a first baffle 125, which is rotatably disposed on the leeward side of the pipe inside the first heat exchanger, and the angle α between the first baffle 125 and the plane where the air inlet of the first heat exchanger is located is adjustable.

[0057] The first baffle 125 can have any shape, such as a flat plate. In some cases, the first baffle 125 can be rotatably disposed inside the first heat exchanger via an assembly such as a shaft. The first baffle 125 can be driven to rotate, so that the aforementioned included angle α can be adjusted.

[0058] Specifically, the aforementioned included angle α can be adjusted according to the difference in air resistance between the first heat exchanger and the second heat exchanger. For example, the first baffle 125 can be driven to rotate according to the difference in air resistance between the first heat exchanger and the second heat exchanger, so as to achieve the purpose of adjusting the aforementioned included angle α.

[0059] By adjusting the aforementioned angle, the difference in air resistance between the first and second heat exchangers can be balanced, thereby giving fuller play to the heat exchange performance of each heat exchanger and further improving the heat exchange effect of the dry cooler.

[0060] This specification also provides a cooling system in its embodiments. For example... Figure 4 As shown, the cooling system 200 may include at least one dry cooler. This dry cooler may include the dry cooler 100 of one or more of the embodiments described above. These dry coolers are arranged in a direction perpendicular to the height direction.

[0061] These dry coolers can be installed on the mounting surface, and there is a space between the bottom of these dry coolers and the mounting surface.

[0062] This space provides a channel for free airflow. During the operation of the dry cooler 100, cool air can enter from the bottom air inlet, pass through the internal heat dissipation structure, carry away heat, and then be exhausted from the top air outlet. This natural air convection process is smoother due to the existence of the space, which can significantly improve heat dissipation efficiency and maintain the normal operating temperature of the load equipment. In addition, this space makes the installation process of the dry cooler 100 more flexible. For example, installers can choose a suitable installation position and angle according to the actual site conditions without worrying about the bottom fitting perfectly with the mounting surface. This flexibility is particularly suitable for some irregular mounting surfaces or places with limited space, and can better meet different installation needs.

[0063] Understandably, by increasing the heat exchange area per unit area in the vertical space of each dry cooler, the heat exchange capacity per unit area is increased, thus enabling a single dry cooler to meet the cooling requirements of high-power levels within a limited deployment area. By arranging at least one dry cooler vertically in the vertical direction, the deployment area can be fully utilized to meet even higher power cooling requirements.

[0064] In some embodiments, the cooling system 200 may further include connecting components. At least one dry cooler is connected to another via the connecting components. An insulating surface is formed on the connecting components, isolating the air outlet and the air inlet. This connection may include a detachable connection. This achieves isolation between the hot air region and the cold air region, preventing hot air exhausted from the air outlet from entering the air inlet, thus preventing heat recirculation and further improving the heat exchange efficiency of each dry cooler.

[0065] The connecting component can have various suitable structures, and there is no limitation thereto. Optionally, the connecting component includes a second baffle 210. One end of the second baffle 210 is connected to the first dry cooler, and the other end of the second baffle 210 is connected to the second dry cooler, and the second baffle 210 is located on the air outlet side of the first dry cooler and the air outlet side of the second dry cooler. The first dry cooler and the second dry cooler are at least two adjacent dry coolers. For example, as... Figure 5As shown, the cooling system 200 includes three dry coolers. The dry cooler on the left is connected to the dry cooler in the middle through a second baffle 210, and the dry cooler on the right is also connected to the dry cooler in the middle through a second baffle 210.

[0066] Understandably, connecting adjacent dry coolers via a second baffle not only avoids heat recirculation and further improves the heat exchange efficiency of each dry cooler, but also simplifies the cooling system structure.

[0067] In some embodiments, the heat exchangers in the dry cooler further include a spray assembly for spraying a second working medium onto pipes within the dry cooler. The cooling system 200 may also include a controller connected to the spray assembly. The controller is configured to drive the spray assembly of at least one heat exchanger in the dry cooler to operate in response to a first preset condition being met by the load device or an environmental parameter of the environment in which the dry cooler is located being met by a second preset condition.

[0068] Environmental parameters can include temperature, humidity, and season. Both the first and second preset conditions can be set according to actual needs. For example, the first preset condition could include the data center load exceeding a preset load value, and the second preset condition could include the ambient temperature of the dry cooler exceeding a preset temperature.

[0069] For example, when the data center load exceeds a preset load value or the ambient temperature of the dry cooler exceeds a preset temperature, the controller can drive the spray assembly in at least one heat exchanger within the dry cooler to operate. This allows the first cooling medium to cool down rapidly, improving the heat exchange efficiency of the dry cooler.

[0070] by Figure 4 Taking any of the dry coolers shown as an example, the spray components in the first heat exchanger and the spray components in the second heat exchanger can be driven to work simultaneously, which can rapidly cool the first cooling medium; or, when the first cooling medium flows from the pipe inside the first heat exchanger to the pipe inside the second heat exchanger, only the spray components in the second heat exchanger can be driven to spray the second cooling medium, which can achieve the purpose of saving the second cooling medium while rapidly cooling the first cooling medium; or, when the first cooling medium flows from the pipe inside the second heat exchanger to the pipe inside the first heat exchanger, only the spray components in the first heat exchanger can be driven to spray the second cooling medium, which can achieve the purpose of saving the second cooling medium while rapidly cooling the first cooling medium.

[0071] In some embodiments, the cooling system 200 may further include a cooling device. Piping within the heat exchanger of the dry cooler is connected to the cooling device. The dry cooler may be located outside the space to be cooled, while the cooling device may be located inside the space. For example, the space to be cooled is a data center, and the dry cooler is installed outside the data center, such as on the roof of the building housing the data center. Alternatively, the dry cooler may be located inside the data center. The cooling medium exchanges heat with the outdoor cold air through the dry cooler, naturally cooling it. The dry cooler then introduces the cooled medium into the cooling device, which cools the data center.

[0072] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0073] In summary, the above description is merely a preferred embodiment of this specification and is not intended to limit the scope of protection of this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

[0074] The systems, devices, modules, or units described in the above embodiments can be implemented by computer chips or entities, or by products with certain functions. A typical implementation device is a computer. Specifically, a computer can be, for example, a personal computer, laptop computer, cellular phone, camera phone, smartphone, personal digital assistant, media player, navigation device, email device, game console, tablet computer, wearable device, or any combination of these devices.

[0075] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0076] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0077] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

Claims

1. A dry cooler, comprising a fan and at least two heat exchangers, the at least two heat exchangers being stacked along the height direction; The heat exchanger includes pipes and an air inlet. The pipes are installed inside the heat exchanger for supplying a first cooling medium. The top heat exchanger is also provided with an air outlet, which is connected to the air inlet. The fan is located at the air outlet to drive external air from the air inlet to the duct and then discharge it through the air outlet.

2. The dry cooler according to claim 1, wherein the air outlet is located at the top of the topmost heat exchanger; The air inlet of the bottommost heat exchanger is located at the bottom of the bottommost heat exchanger, while the air inlets of the non-bottommost heat exchangers are located on the side of the non-bottommost heat exchangers.

3. The dry cooler according to claim 2, wherein the pipes inside the top heat exchanger are arranged along the height direction.

4. The dry cooler according to claim 3, wherein the pipes inside the top heat exchanger are arranged in an I-shape in the height direction.

5. In the dry cooler according to claim 2, the extension direction of the pipes inside the heat exchanger that is not the top layer intersects with the plane where the air inlet of the heat exchanger that is not the top layer is located.

6. The dry cooler according to claim 5, wherein the projection of the pipes inside the non-topmost heat exchanger in the lateral direction of the heat exchanger is V-shaped or W-shaped.

7. The dry cooler according to claim 1, wherein the pipes in at least two heat exchangers are connected.

8. The dry cooler according to claim 1, wherein the heat exchanger further comprises a spray assembly for spraying a second cooling medium onto the pipes within the heat exchanger.

9. The dry cooler according to claim 1, wherein the at least two heat exchangers include a first heat exchanger and a second heat exchanger, the first heat exchanger is stacked on top of the second heat exchanger, and the air outlet is located on top of the first heat exchanger; The air inlet of the first heat exchanger is located on the side of the first heat exchanger, and the air inlet of the second heat exchanger is located at the bottom of the second heat exchanger.

10. The dry cooler according to claim 9, wherein the first heat exchanger further includes a first baffle, the first baffle being rotatably disposed on the leeward side of the pipe inside the first heat exchanger; The angle between the first baffle and the plane where the air inlet of the first heat exchanger is located is adjustable.

11. A cooling system comprising at least one dry cooler, the dry cooler comprising the dry cooler of any one of claims 1 to 10; the at least one dry cooler being arranged in a direction perpendicular to the height direction.

12. The cooling system according to claim 11, further comprising a connecting component, wherein the at least one dry cooler is connected to each other via the connecting component; an isolation surface is formed on the connecting component, the isolation surface isolating the air outlet and the air inlet.

13. The cooling system according to claim 12, wherein the connecting component includes a second baffle; One end of the second baffle is connected to the first dry cooler, and the other end of the second baffle is connected to the second dry cooler. The second baffle is located at the air outlet side of the first dry cooler and the air outlet side of the second dry cooler. The first dry cooler and the second dry cooler are two adjacent dry coolers among the at least one dry cooler.

14. The cooling system of claim 11, wherein the heat exchanger in the dry cooler further comprises a spray assembly for spraying a second working medium onto pipes within the dry cooler; the cooling system further comprises a controller connected to the spray assembly, the controller being configured to: In response to the load device meeting a first preset condition or the environmental parameters of the environment where the dry cooler is located meeting a second preset condition, the spray assembly of at least one heat exchanger in the dry cooler is driven to work.

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