Cooling and Data Centers

Abstract

The present application relates to a heat dissipation device and a data center, wherein the heat dissipation device is used to dissipate heat for a computer room of a data center. The heat dissipation device comprises a heat exchange core, wherein the heat exchange core comprises a top, a bottom, a first side, a second side, an outdoor air duct and an indoor air duct, wherein the first side and the second side are arranged oppositely and at intervals, wherein the first side and the second side are connected between the top and the bottom and are surrounded by the top and the bottom to form a cavity, wherein the outdoor air duct and the indoor air duct are located in the cavity, wherein the outdoor air duct and the indoor air duct are mutually unconnected passages, and wherein the outdoor air duct and the indoor air duct can perform heat exchange. The air inlet of the outdoor air duct is located at the first side, the air outlet of the outdoor air duct is located at the top, the air inlet of the indoor air duct is located at the second side, and the air outlet of the indoor air duct is located at the bottom. The air inlet of the indoor air duct of the present application is at the second side, wherein the indoor wind of the computer room can directly enter the heat exchange core for heat exchange, and no air duct is required between the computer room and the heat exchange core, which is conducive to saving the floor space of the data center.

Description

Technical Field

[0001] The present invention relates to the field of heat dissipation technology, and in particular to a heat dissipation device and a data center. Background Art

[0002] With the vigorous development of the data center industry around the world and the rapid growth of social economy, the development and construction of data centers will be in a high-speed period. Data centers consume huge amounts of energy, so higher requirements are placed on the heat dissipation of data centers.

[0003] At present, the indirect evaporative cooling equipment mainly used in the heat dissipation devices of data centers is mostly cross-flow air-to-air heat exchanger, which has low heat exchange efficiency. In addition, the existing indirect evaporative cooling equipment uses cross-flow air-to-air heat exchanger, which needs to be connected to the side of the data center computer room by air duct, resulting in additional floor space and reducing the usable area of ​​the cabinet.

[0004] Therefore, it is necessary to provide a heat dissipation device with high heat exchange efficiency and capable of improving the space utilization of the data center. Summary of the invention

[0005] The embodiment of the present application provides a heat dissipation device and a data center, wherein the heat dissipation device is used to dissipate heat for a computer room of a data center. The heat dissipation device of the present application improves the heat exchange efficiency by designing the indoor air duct and the outdoor air duct of the heat exchange core, and does not require an air duct connection between the heat dissipation device and the computer room, thereby saving the floor space of the data center.

[0006] In the first aspect, the embodiment of the present application provides a heat dissipation device, which is used to dissipate heat for the computer room of a data center. The heat dissipation device includes a heat exchange core, the heat exchange core includes a top, a bottom, a first side, a second side, an outdoor air duct and an indoor air duct, the first side and the second side are opposite and spaced, the first side and the second side are connected between the top and the bottom and are surrounded by the top and the bottom to form a cavity, the outdoor air duct and the indoor air duct are mutually unconnected channels, and the channel wall of the outdoor air duct and the channel wall of the indoor air duct can exchange heat; the outdoor air duct and the indoor air duct are located in the cavity, the air inlet of the outdoor air duct is located at the first side, the air outlet of the outdoor air duct is located at the top, the air inlet of the indoor air duct is located at the second side, and the air outlet of the indoor air duct is located at the bottom. The data center consumes huge energy and generates huge heat. In order to ensure the normal operation of the data center, it is necessary to dissipate heat from the computer room of the data center. The heat exchange core of the present application is an important heat exchange structure of the indirect evaporative cooling equipment.

[0007] Indoor air duct refers to the channel where indoor air (indoor air is divided into indoor hot air and indoor cold air) circulates, and outdoor air duct refers to the channel where outdoor air (outdoor air is divided into outdoor cold air and outdoor hot air) circulates. Indoor refers to the inside of the computer room, and outdoor refers to the outside of the computer room. The indoor air duct and the outdoor air duct are unconnected channels, and the channel wall of the indoor air duct and the channel wall of the outdoor air duct can be adjacent to each other. Heat exchange is performed through the channel wall to transfer the heat of the indoor hot air in the indoor channel to the outdoor cold air in the outdoor air duct, thereby cooling the computer room.

[0008] The present application sets the air inlet of the indoor air duct on the second side, so that the second side of the heat exchange core can be adjacent to the wall of the computer room of the data center, and the indoor wind of the computer room directly enters the heat exchange core through the air inlet for heat exchange. Compared with the design of the indoor air duct with the air inlet at the top in the prior art, the present application does not need to set an air duct between the computer room and the heat exchange core, which can save the floor space of the data center.

[0009] The air inlet of the outdoor air duct of the present application is at the first side, the air outlet of the outdoor air duct is at the bottom, the air inlet of the indoor air duct is at the second side, the air outlet of the indoor air duct is at the bottom, and the indoor air duct and the outdoor air duct can be set in countercurrent, which is beneficial to improve the heat exchange efficiency of the heat exchange core.

[0010] In a possible implementation, the heat exchange core may be a cuboid or a cube, and the heat exchange core further includes a third side portion and a fourth side portion, and the first side portion, the third side portion, the second side portion and the fourth side portion are sequentially connected and are all located between the top and the bottom. It should be noted that the heat exchange core may also be in other shapes, and the present application does not limit the shape of the heat exchange core.

[0011] In a possible implementation, the outdoor air duct includes a first section, and the indoor air duct includes a second section. The channel wall of the first section and the channel wall of the second section can perform heat exchange, and the wind direction of the outdoor wind of the first section is opposite to the wind direction of the indoor wind of the second section. The wind directions of the outdoor wind of the first section and the indoor wind of the second section are opposite, which is conducive to sufficient heat exchange and improves the heat exchange efficiency of the heat exchange core. It can be understood that the channel wall of the first section and the channel wall of the second section can be in contact to achieve good heat exchange.

[0012] In a possible embodiment, the indoor air duct is L-shaped, S-shaped or wavy. It is understandable that the outdoor air duct can also be L-shaped, S-shaped or wavy. The present application does not limit the specific forms of the outdoor air duct and the indoor air duct. For example, the indoor air duct and the outdoor air duct can also be other irregular shapes, as long as the air inlet of the outdoor air duct is at the first side, the air outlet of the outdoor air duct is at the top, the air inlet of the indoor air duct is located at the second side, and the air outlet of the indoor air duct is located at the bottom. The L-shaped air duct has a simple structure and low wind resistance. The S-shaped or wavy air duct increases the heat exchange path, which is conducive to fully cooling the server in the computer room. Using the heat exchange core of the present application to cool the computer room can significantly increase the system heat exchange, and the heat exchange effect is good and the efficiency is high. It is understandable that the shapes of the outdoor air duct and the indoor air duct can be the same or different. For example, the outdoor air duct and the indoor air duct can both be L-shaped, or the indoor air duct is L-shaped, and the outdoor air duct is S-shaped, etc.

[0013] In a possible implementation, the indoor air duct includes a first sub-indoor air duct and a second sub-indoor air duct, the first sub-indoor air duct and the second sub-indoor air duct are not connected and are parallel air ducts, the length of the first sub-indoor air duct is greater than the length of the second sub-indoor air duct, and the width of the first sub-indoor air duct is greater than the width of the second sub-indoor air duct. It can be understood that a long air duct has a large wind resistance, which is not conducive to rapid heat exchange and has low heat exchange efficiency. The implementation of the present application sets the width of the first sub-indoor air duct to be greater than the width of the second sub-indoor air duct, which is conducive to reducing the wind resistance of the first sub-indoor air duct and improving the heat exchange efficiency.

[0014] In a possible implementation, the heat dissipation device includes a first shell, and the heat exchange core is located in the first shell; the heat dissipation device includes a mechanical refrigeration device, and the mechanical refrigeration device includes a second shell, an evaporator and a condenser. The second shell is connected to or spaced apart from the first shell, and the evaporator is located in the second shell to absorb indoor heat, and the condenser is located outside the second shell to dissipate indoor heat. The heat exchange core is an important heat exchange structure of the indirect evaporative cooling device. The heat exchange core of the implementation of the present application is arranged in the first shell, and the evaporator is arranged in the second shell. The first shell and the second shell allow the heat exchange core and the evaporator to be in two different cavities, and the ratio of indirect evaporative cooling to mechanical cooling can be freely adjusted, which is conducive to reducing power consumption. The first shell and the second shell can be connected or spaced apart to realize the separate operation of indirect evaporative cooling and mechanical cooling.

[0015] In a possible implementation, the mechanical refrigeration equipment further includes a compressor, which is connected between the air outlet of the evaporator and the air inlet of the condenser. The evaporator is used to absorb heat, and the condenser is used to dissipate heat. The liquid refrigerant in the evaporator absorbs the heat in the room and then vaporizes into a gas state. The gaseous refrigerant is transmitted to the compressor. The compressor provides power for the circulation of the gaseous refrigerant, and at the same time increases the temperature of the gaseous refrigerant during the compression process, that is, the gas before entering the compressor is a medium-temperature gas, and the temperature of the gas compressed by the compressor increases to a high-temperature gas. It can be understood that when the outdoor temperature is high, it is difficult to dissipate the heat of the gaseous refrigerant to the outdoors. The compressor increases the temperature of the gaseous refrigerant during the compression process, so that the temperature of the gaseous refrigerant is higher than the outdoor temperature, and the heat absorbed by the gaseous refrigerant can be released to the outdoors. The gaseous refrigerant passing through the compressor enters the condenser for cooling, and the cooled refrigerant is transmitted to the evaporator to achieve circulating heat dissipation of the machine room.

[0016] In a possible implementation, the heat exchange core is connected in parallel with the mechanical refrigeration equipment, and the indoor hot air enters the evaporator and the heat exchange core for heat exchange respectively. By connecting the heat exchange core and the mechanical refrigeration equipment in parallel, the indoor hot air entering the heat exchange core no longer enters the evaporator, and the indoor hot air entering the evaporator no longer enters the heat exchange core, thereby achieving independent refrigeration, which is beneficial to reducing wind resistance, and can achieve flexible coordination of indirect evaporative cooling and mechanical cooling, and achieve low-power operation of the heat dissipation device. In addition, the present application sets the indirect evaporative cooling equipment in parallel with the mechanical refrigeration equipment, so that when one of the indirect evaporative cooling equipment or the mechanical refrigeration equipment fails during operation and cannot cool the computer room, the other can normally cool the computer room and ensure the normal operation of the server.

[0017] In a possible implementation, the mechanical refrigeration device is located at the air inlet side of the indoor channel. The indoor hot air first enters the second shell, and then a part of the indoor hot air enters the evaporator and exchanges heat through the mechanical refrigeration device, and the other part of the indoor hot air enters the first shell and exchanges heat through the heat exchange core.

[0018] In a possible implementation, the heat exchange core and the mechanical refrigeration device are arranged along the direction in which the wall of the machine room extends. The heat exchange core and the mechanical refrigeration device are in contact with the wall of the machine room to achieve heat exchange, and the heat exchange core and the mechanical refrigeration device can be set apart and work independently.

[0019] In a possible implementation, the mechanical refrigeration device includes an air valve, which is located at the air inlet of the evaporator and is used to control the indoor air volume entering the evaporator. It can be understood that when there is no need to start the mechanical refrigeration device and only the heat exchange core is used for cooling, the indoor air volume entering the evaporator can be reduced to zero by closing the air valve, that is, no indoor air enters the evaporator, and all indoor hot air enters the heat exchange core for heat dissipation. In addition, when the heat exchange core and the mechanical refrigeration device are working at the same time, the amount of indoor air volume entering the mechanical refrigeration device can also be controlled by adjusting the air valve, so as to realize the free allocation of the ratio of indirect evaporative cooling and mechanical cooling, which is conducive to reducing power consumption.

[0020] In a possible implementation, the size of the evaporator in the first direction is smaller than the size of the evaporator in the second direction, the first direction is the arrangement direction from the top to the bottom, and the second direction is perpendicular to the first direction. In other words, the evaporator is placed horizontally, and the length direction of the evaporator is the second direction, so as to avoid blocking the wind entering the machine room and increasing the resistance when the evaporator is placed vertically.

[0021] In one possible implementation, the evaporator includes a condensation-free design. The temperature of the evaporator is relatively low, and condensation is likely to form at the evaporator. When water droplets fall, they will be sent to the machine room by the fan, affecting the normal operation of the machine room. Therefore, by setting the evaporator to be condensation-free, the evaporation temperature of the evaporator is controlled to prevent the generation of condensation.

[0022] In a possible implementation, the heat dissipation device includes a fan, the fan is located at the air outlet of the outdoor air duct, the condenser is located at the air outlet of the outdoor air duct, and the fan is used to discharge the outdoor hot air of the outdoor air duct and dissipate heat in the condenser. In the embodiment of the present application, the heat exchange core and the condenser can share a fan, and the fan discharges the outdoor hot air of the outdoor air duct in time and dissipates heat for the condenser, thereby reducing the resistance on the outdoor side, reducing the number of fans, and reducing costs. It should be noted that in other implementations, a fan can be set at the air outlet of the outdoor air duct and at the condenser according to actual conditions.

[0023] In a possible embodiment, the heat dissipation device includes a first spray device and a second spray device, the first spray device is located at the air inlet of the outdoor air duct, and the second spray device is located at the air outlet of the outdoor air duct. In the embodiment of the present application, a two-stage spray system is set, which is respectively located at the air inlet of the outdoor air duct and the air outlet of the outdoor air duct. The spray system is used to cool the air in the outdoor air duct for evaporation, and then exchange heat with the indoor hot air of the indoor air duct. It can be understood that when a large amount of water is needed, both the first spray device and the second spray device can be turned on. When a large amount of water is not needed, the first spray device and the second spray device can selectively turn on one. In other embodiments, only one spray device can be set, and this application is not limited to this. The first spray device and the second spray device can be set in the form of spray or wet film spray. For example, the first spray device can be set to spray mode, the second spray device can be set to film spray mode, or both can be spray mode, etc., which can be set as needed.

[0024] In a possible implementation, the heat dissipation device includes a first shell and a fresh air device, the heat exchange core is located in the first shell, and the fresh air device is located in the first shell or outside the first shell, and is used to send outdoor cold air into the room. When the temperature of the outdoor air is not much different from that required indoors and the outdoor air quality meets the standard, the fresh air device can be turned on to send outdoor air into the room.

[0025] In a second aspect, the present application provides a data center, including a computer room, a server, and a heat dissipation device as described in any of the above embodiments, wherein the server is located in the computer room, and the heat dissipation device is used to dissipate heat for the server. The server will generate a large amount of heat when working, and the server will affect the work efficiency and even damage the server after heating up, so it is necessary to cool down the computer room in time to cool down the server. The heat dissipation device used in the present application for dissipating heat for the computer room can adopt indirect evaporative cooling of a heat exchange core to dissipate heat, or can adopt a heat exchange core in combination with mechanical refrigeration to cool the computer room together, with high heat exchange efficiency, small wind resistance, and low power consumption.

[0026] The present application sets the air inlet of the indoor air duct at the second side, so that no additional air duct connection is required between the computer room and the heat dissipation device, thereby reducing the footprint of the data center, and improving the heat exchange efficiency by setting the indoor air duct and the outdoor air duct in countercurrent. The heat exchange core and the mechanical refrigeration equipment of the present application can be two independently operated parts. The heat exchange core and the mechanical refrigeration equipment are set in parallel. The indoor wind passing through the heat exchange core will not pass through the evaporator of the mechanical refrigeration equipment, and the indoor wind passing through the evaporator of the mechanical refrigeration equipment will not pass through the heat exchange core, which is conducive to reducing wind resistance, and the ratio of heat exchange core cooling and mechanical refrigeration cooling can be freely adjusted to reduce system power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background technology, the drawings required for use in the embodiments of the present invention or the background technology will be described below.

[0028] Figure 1 It is a structural schematic diagram of a data center provided by an implementation method of the present application;

[0029] Figure 2 It is a structural schematic diagram of another data center provided in an embodiment of the present application;

[0030] Figure 3 It is a structural schematic diagram of a heat dissipation device provided in an embodiment of the present application;

[0031] Figure 4 It is a structural schematic diagram of a heat exchange core provided in an embodiment of the present application;

[0032] Figure 5 It is a schematic structural diagram of an outdoor air duct of a heat exchange core provided in an embodiment of the present application;

[0033] Figure 6 is an example diagram of the flow direction of indoor wind and outdoor wind provided in an embodiment of the present application;

[0034] Figure 7 A schematic diagram of the structure of an indoor air duct of another heat exchange core provided in an embodiment of the present application;

[0035] Figure 8 It is a structural schematic diagram of a heat dissipation device provided in an embodiment of the present application;

[0036] Fig. 9 is a schematic structural diagram of another heat dissipation device provided in an embodiment of the present application;

[0037] Fig.10 It is a schematic structural diagram of another heat dissipation device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] In this document, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0040] In addition, the terms "disposed", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] like Figure 1 and Figure 2 As shown, Figure 1 is a structural diagram of a data center 100 provided in an embodiment of the present application. Figure 2 It is a structural schematic diagram of another data center 100 provided by an embodiment of the present application. The data center 100 includes a computer room 10, a server 20 and a heat dissipation device 30. The server 20 is located in the computer room 10, and the heat dissipation device 30 is used to dissipate heat for the server 20. The data center 100 is a global collaborative specific equipment network used to transmit, accelerate, display, calculate and store data information on the network infrastructure. The computer room 10 is the core of the integrated wiring and information network equipment, and is also the data convergence center of the information network system. The computer room 10 has high requirements for cleanliness, temperature and humidity. There are generally more servers 20 in the data center 100. The server 20 will generate a lot of heat when working. After the server 20 heats up, it will affect the work efficiency. Therefore, it is necessary to cool down the computer room 10 in time to cool down the server 20. The heat dissipation device 30 can be located outside the computer room 10, and the heat dissipation device 30 cools down the computer room 10 to ensure that the server 20 can operate normally.

[0042] The heat dissipation device 30 includes an indirect evaporative cooling device 31 and a mechanical refrigeration device 32. The indirect evaporative cooling device 31 is widely used in major data centers due to its low energy consumption and large cooling capacity. The indirect evaporative cooling device 31 includes a heat exchange core ( Figure 1 and Figure 2 Not shown), that is, the heat dissipation device 30 includes a heat exchange core.

[0043] exist Figure 1In the data center 100 shown, the indirect evaporative cooling equipment 31 and the mechanical refrigeration equipment 32 are arranged at intervals, the indirect evaporative cooling equipment 31 is in contact with the wall of the computer room 10, and the mechanical refrigeration equipment 32 is in contact with the wall of the computer room 10. The indirect evaporative cooling equipment 31 and the mechanical refrigeration equipment 32 are arranged along the direction in which the wall of the computer room 10 extends, so as to cool the computer room 10 and ensure the normal operation of the server 20.

[0044] exist Figure 2 In the data center 100 shown, the mechanical refrigeration equipment 32 is located between the indirect evaporative cooling equipment 31 and the wall of the computer room 10 , which can also be understood as the mechanical refrigeration equipment 32 being located between the heat exchange core and the wall of the computer room 10 .

[0045] The present application does not limit the arrangement form and location of the indirect evaporative cooling equipment 31 and the mechanical refrigeration equipment 32 , and they can be arranged according to the space and control requirements of the data center 100 .

[0046] In other embodiments, the heat dissipation device 30 may include an indirect evaporative cooling device 31 instead of a mechanical refrigeration device 32 . The indirect evaporative cooling device 31 is in contact with a wall of the computer room 10 to dissipate heat for the computer room 10 .

[0047] like Figure 3 , Figure 4 and Figure 5 As shown, Figure 3 This is a schematic diagram of the structure of a heat dissipation device 30 provided in an embodiment of the present application. Figure 4 is a schematic diagram of the structure of a heat exchange core 311, Figure 5 Schematic diagram of the structure of an outdoor air duct 312 of a heat exchange core 311. In the embodiment of the present application, the heat dissipation device 30 includes a heat exchange core 311, and the heat exchange core 311 is used to exchange heat between indoor hot air and outdoor cold air to cool the machine room 10.

[0048] The heat exchange core 311 includes a top 3111, a bottom 3112, a first side 3113, and a second side 3114. The first side 3113 and the second side 3114 are connected between the top 3111 and the bottom 3112 and are surrounded by the top 3111 and the bottom 3112 to form a cavity 3115. The first side 3113 and the second side 3114 are arranged opposite to each other and spaced apart. It can be understood that in some embodiments, the first side 3113 and the second side 3114 are arranged in parallel, and the present application does not strictly limit the first side 3113 and the second side 3114 to be arranged in parallel. In other embodiments, the first side 3113 and the second side 3114 can also be arranged obliquely.

[0049] In some embodiments, the heat exchange core 311 may be a cuboid or a cube, and the heat exchange core 311 further includes a third side portion and a fourth side portion, and the first side portion 3113, the third side portion, the second side portion 3114, and the fourth side portion are sequentially connected and are all located between the top portion 3111 and the bottom portion 3112. It should be noted that the heat exchange core 311 may also be in other shapes, and the present application does not limit the shape of the heat exchange core 311.

[0050] The heat exchange core 311 is provided with an outdoor air duct 312 and an indoor air duct 313, and the outdoor air duct 312 and the indoor air duct 313 are located in the cavity 3115. The indoor air duct 313 refers to a channel for indoor air (the indoor air is divided into indoor hot air R1 and indoor cold air L1, and the indoor hot air R1 becomes the indoor cold air L1 after heat exchange) to circulate, and the outdoor air duct 312 refers to a channel for outdoor air (the outdoor air is divided into outdoor cold air L2 and outdoor hot air R2, and the outdoor cold air L2 becomes the outdoor hot air R2 after heat exchange) to circulate. Indoor refers to the inside of the machine room 10, and outdoor refers to the outside of the machine room 10. The outdoor air duct 312 and the indoor air duct 313 are mutually unconnected channels in the heat exchange core 311, and the channel walls of the outdoor air duct 312 and the indoor air duct 313 can be in direct contact or indirect contact, and heat exchange is performed through the channel walls.

[0051] The air inlet 3121 of the outdoor air duct 312 is located at the first side portion 3113, the air outlet 3122 of the outdoor air duct 312 is located at the top portion 3111, the air inlet 3131 of the indoor air duct 313 is located at the second side portion 3114, and the air outlet 3132 of the indoor air duct 313 is located at the bottom portion 3112. The outdoor cold air L2 enters the outdoor air duct 312 from the air inlet 3121 of the outdoor air duct 312, and in the process of flowing through the outdoor air duct 312, heat is exchanged with the indoor air duct 313 to increase the temperature to form outdoor hot air R2, and the outdoor hot air R2 is discharged from the air outlet 3122 of the outdoor air duct 312. The indoor hot air R1 enters the indoor air duct 313 from the air inlet 3131 of the indoor air duct 313 , and exchanges heat with the outdoor air duct 312 during the process of flowing through the indoor air duct 313 to be cooled to become indoor cold air L1 . The indoor cold air L1 is sent to the computer room 10 to cool the computer room 10 .

[0052] In the embodiment of the present application, the air inlet 3131 of the indoor air duct 313 is on the second side 3114. During installation, the second side 3114 of the heat exchange core 311 can be adjacent to the wall of the computer room 10 to achieve wall-mounted installation. The indoor hot air R1 in the computer room 10 can directly enter the indoor air duct 313 through the air inlet 3131 without setting an air duct between the computer room 10 and the heat exchange core 311 (in the prior art, the air inlet of the indoor air duct 313 is usually located at the top 3111, and the indoor hot air in the computer room 10 cannot directly reach the top 3111. It is necessary to set an air duct between the top 3111 and the computer room 10 to connect the indoor air duct and the computer room 10), which is beneficial to saving the floor space of the data center 100 and reducing the construction cost of the data center 100. The air inlet 3121 of the outdoor air duct 312 of the present application is on the first side 3113, the air outlet 3122 of the outdoor air duct 312 is on the bottom 3112, the air inlet 3131 of the indoor air duct 313 is located on the second side 3114, the air outlet 3132 of the indoor air duct 313 is located on the bottom 3112, the indoor air duct 313 and the outdoor air duct 312 can be arranged in countercurrent, with a long heat exchange path and a large heat exchange area, which is beneficial to improving the heat exchange efficiency of the heat exchange core 311 and effectively increasing the heat exchange amount, and is beneficial to fully cooling the machine room 10.

[0053] See also Figure 4 , Figure 5 and Figure 6 , Figure 6 31 is an example diagram of the flow direction of indoor wind and outdoor wind. The outdoor wind duct 312 includes a first section 3123, and the indoor wind duct 313 includes a second section 3133. The first section 3123 and the second section 3133 are arranged correspondingly. The channel wall of the first section 3123 and the channel wall of the second section 3133 can exchange heat. The wind direction of the outdoor wind of the first section 3123 is opposite to the wind direction of the indoor wind of the second section 3133. In the embodiment of the present application, the wind direction of the first section 3123 and the second section 3133 is opposite, which increases the heat exchange path of the indoor wind and the outdoor wind, increases the heat exchange contact area, and is conducive to increasing the heat exchange efficiency and the amount of heat exchange. The heat exchange core 311 plays a good heat exchange role and can fully dissipate heat for the machine room 10, so that the machine room 10 is maintained at a normal operating temperature. Exemplarily, the channel wall of the first section 3123 and the channel wall of the second section 3133 can contact to achieve good heat exchange.

[0054] like Figure 7 As shown, Figure 7It is a structural schematic diagram of an indoor air duct 313 of another heat exchange core 311. The indoor air duct 313 includes a first sub-indoor air duct 313-1 and a second sub-indoor air duct 313-2. The first sub-indoor air duct 313-1 and the second sub-indoor air duct 313-2 are not connected and are parallel air ducts. The length of the first sub-indoor air duct 313-1 is greater than the length of the second sub-indoor air duct 313-2. The width of the first sub-indoor air duct 313-1 is greater than the width of the second sub-indoor air duct 313-2. The length of the first sub-indoor air duct 313-1 refers to the flow distance of the indoor hot air in the first sub-indoor air duct 313-1, and the length of the second sub-indoor air duct 313-2 refers to the flow distance of the indoor hot air in the second sub-indoor air duct 313-2.

[0055] It can be understood that a long air duct has a large wind resistance, which is not conducive to rapid heat exchange and has low heat exchange efficiency. The embodiment of the present application can set the width of the long first sub-indoor air duct 313-1 to be larger than the width of the second sub-indoor air duct 313-2, which is beneficial to reduce the wind resistance of the first sub-indoor air duct 313-1 and improve the heat exchange efficiency.

[0056] It can be understood that the indoor air duct 313 may also include a third sub-indoor air duct, a fourth sub-indoor air duct, a fifth indoor sub-air duct, etc. The widths of multiple sub-indoor air ducts can be adjusted according to the lengths of different sub-indoor air ducts, and a sub-indoor air duct with a long length can be set with a larger width.

[0057] In some embodiments, the outdoor air duct 312 includes a first sub-outdoor air duct and a second sub-outdoor air duct, the length of the first sub-outdoor air duct is greater than that of the second sub-outdoor air duct, and the width of the first sub-outdoor air duct is greater than that of the second sub-outdoor air duct.

[0058] In some embodiments, the indoor air duct 313 can be set to an L-shaped, S-shaped or wavy air duct. The outdoor air duct 312 can also be set to an L-shaped, S-shaped or wavy shape. That is, the first sub-indoor air duct 313-1, the second sub-indoor air duct 313-2, the first sub-outdoor air duct and the second sub-outdoor air duct can be L-shaped, S-shaped or wavy. The present application does not limit the specific form of the outdoor air duct 312 and the indoor air duct 313. For example, the indoor air duct 313 and the outdoor air duct 312 can also be other irregular shapes, as long as the air inlet 3121 of the outdoor air duct 312 is at the first side 3113, the air outlet 3122 of the outdoor air duct 312 is at the bottom 3112, the air inlet 3131 of the indoor air duct 313 is located at the second side 3114, and the air outlet 3132 of the indoor air duct 313 is located at the bottom 3112. The L-shaped air duct has a simple structure and low wind resistance, and the S-shaped or wavy air duct increases the heat exchange path, which is conducive to fully cooling the servers in the computer room 10. Using the heat exchange core 311 of the present application to cool the computer room 10 can significantly increase the system heat exchange amount, with good heat exchange effect and high efficiency.

[0059] It can be understood that the shapes of the outdoor air duct 312 and the indoor air duct 313 can be the same or different. For example, the outdoor air duct 312 and the indoor air duct 313 can both be L-shaped, or the indoor air duct 313 can be L-shaped and the outdoor air duct 312 can be S-shaped, etc.

[0060] See also Figure 3 , Figure 4 and Figure 5 In some embodiments, the indirect evaporative cooling device 31 further includes a first shell 310, a first spray device 314, a second spray device 315, a water tank 316 and a water pump 317. The heat exchange core 311, the first spray device 314, the water tank 316 and the water pump 317 are located in the first shell 310, and the second spray device 315 is located outside the first shell 310. Exemplarily, the first spray device 314 is located at the air inlet of the outdoor air duct 312, and the second spray device 315 is located at the air outlet of the outdoor air duct 312. The present application only provides a structure of an indirect evaporative cooling device 31, and the present application does not limit the positions of the first spray device 314, the second spray device 315, the water tank 316 and the water pump 317. It can be understood that in other embodiments, one of the first spray device 314 and the second spray device 315 can be set.

[0061] The water pump 317 pumps the water in the water tank 316 into the first spray device 314 and the second spray device 315, and the first spray device 314 and the second spray device 315 input the water into the outdoor air duct 312, and the first spray device 314 and the second spray device 315 are used to evaporate and cool the air in the outdoor air duct 312, and then exchange heat with the indoor hot air R1 of the indoor air duct 313. In the embodiment of the present application, a two-stage spray system is set, which is respectively located at the air inlet of the outdoor air duct 312 and the air outlet of the outdoor air duct 312, which is conducive to fully evaporating and cooling the air in the outdoor air duct 312. It can be understood that when a large amount of water is needed, both the first spray device 314 and the second spray device 315 can be turned on, and when a large amount of water is not needed, the first spray device 314 and the second spray device 315 can selectively turn on one.

[0062] The first spray device 314 and the second spray device 315 can be set to the form of spray or wet film spray. For example, the first spray device 314 can be set to spray mode, the second spray device 315 can be set to film spray mode, or both can be wet film spray mode, etc., which can be set as needed.

[0063] See also Figure 3The mechanical refrigeration device 32 includes a second shell 321, an evaporator 322 and a condenser 323, wherein the evaporator 322 is located inside the second shell 321 and the condenser 323 is located outside the second shell 321. In some embodiments, the mechanical refrigeration device 32 further includes a compressor 324, which is connected between an air outlet of the evaporator 322 and an air inlet of the condenser 323.

[0064] The evaporator 322 is used to absorb indoor heat, and the condenser 323 is used to dissipate indoor heat. The liquid refrigerant in the evaporator 322 absorbs indoor heat and then vaporizes into a gaseous state. The gaseous refrigerant is transmitted to the compressor 324. The compressor 324 provides power for the circulation of the gaseous refrigerant, and at the same time increases the temperature of the gaseous refrigerant during the compression process, that is, the gas before entering the compressor 324 is a medium-temperature gas, and the temperature of the gas compressed by the compressor 324 increases to a high-temperature gas. It can be understood that when the outdoor temperature is high, it is difficult to dissipate the heat of the gaseous refrigerant to the outdoors. The compressor 324 increases the temperature of the gaseous refrigerant during the compression process, so that the temperature of the gaseous refrigerant is higher than the outdoor temperature, and the heat absorbed by the gaseous refrigerant can be released to the outdoors. The gaseous refrigerant passing through the compressor 324 enters the condenser 323 for cooling, and the cooled refrigerant is transmitted to the evaporator 322 to achieve cyclic heat dissipation of the machine room 10.

[0065] The heat exchange core 311 is arranged in the first shell 310, and the evaporator 322 is arranged in the second shell 321. The first shell 310 and the second shell 321 make the heat exchange core 311 and the evaporator 322 in two different cavities, and the ratio of indirect evaporative cooling and mechanical cooling can be freely adjusted, which is conducive to reducing wind resistance and power consumption, achieving energy saving, and reducing refrigeration costs. The first shell 310 and the second shell 321 can be connected or arranged at intervals.

[0066] In some embodiments, Figure 3 and Figure 4 As shown, the arrangement direction from the top 3111 to the bottom 3112 of the heat exchange core 311 is the first direction A1, and the second direction A2 is perpendicular to the first direction A1. The size of the evaporator 322 in the first direction A1 is smaller than the size of the evaporator 322 in the second direction A2. In other words, the evaporator 322 is placed horizontally, and the length direction of the evaporator 322 is the second direction A2, so as to avoid blocking the wind entering the machine room 10 when the evaporator 322 is placed vertically, thereby increasing the resistance.

[0067] In some embodiments, the evaporator 322 includes a condensation-free design. The temperature of the evaporator 322 is relatively low, and condensation is easily generated at the evaporator. The falling water droplets will be sent to the machine room 10 by the fan, affecting the normal operation of the machine room 10. Therefore, by setting the evaporator to be condensation-free, the evaporation temperature of the evaporator 322 is controlled to prevent the generation of condensation.

[0068] In some embodiments, the mechanical refrigeration device 32 further includes an air valve 325, which is located at the air inlet of the evaporator 322 and is used to control the indoor air volume entering the evaporator 322. When the mechanical refrigeration device 32 does not need to be started and only the heat exchange core 311 is used for cooling, the indoor air volume entering the evaporator 322 can be reduced to zero by closing the air valve, that is, no indoor air enters the evaporator 322, and all indoor hot air enters the heat exchange core 311 for heat exchange. In addition, when the indirect evaporative cooling device 31 and the mechanical refrigeration device 32 work at the same time, the amount of indoor air entering the mechanical refrigeration device 32 can also be controlled by adjusting the air valve 325, and the remaining indoor hot air enters the heat exchange core 311 for heat exchange, so as to realize the free allocation of the ratio of indirect evaporative cooling and mechanical cooling, which is conducive to reducing power consumption.

[0069] In the embodiment of the present application, the indirect evaporative cooling device 31 is arranged in parallel with the mechanical refrigeration device 32, and the indoor hot air enters the evaporator 322 and the heat exchange core 311 respectively for heat exchange to reduce the temperature in the machine room 10. The indirect evaporative cooling device 31 is arranged in parallel with the mechanical refrigeration device 32, which can be understood as the indoor hot air entering the heat exchange core 311 no longer entering the evaporator 322, and the indoor hot air entering the evaporator 322 no longer entering the heat exchange core 311. It can be avoided that when the indirect evaporative cooling device 31 and the mechanical refrigeration device 32 are connected in series, the indoor hot air has to pass through both the indirect evaporative cooling device 31 and the mechanical refrigeration device 32, which causes waste of resources and large wind resistance. The indirect evaporative cooling device 31 and the mechanical refrigeration device 32 are arranged in parallel in the present application to realize independent refrigeration, reduce wind resistance, realize flexible coordination of indirect evaporative cooling and mechanical cooling, and realize low power consumption operation of the heat dissipation device 30. In addition, the present application sets up an indirect evaporative cooling device 31 and a mechanical refrigeration device 32 in parallel, so that when one of the indirect evaporative cooling device 31 or the mechanical refrigeration device 32 fails to cool during operation and cannot dissipate heat for the computer room 10, the other can normally dissipate heat for the computer room 10, thereby ensuring the normal operation of the server 20.

[0070] See also Figure 2 , Figure 3 and Figure 4, the indoor hot air R1 output from the computer room 10 enters the second shell 321, part of the indoor hot air R1 enters the evaporator 322, and passes through the compressor 324 and the condenser 323 to achieve circulation and heat dissipation, and forms indoor cold air L1, and the indoor cold air L1 is sent back to the computer room 10 to cool the server 20; another part of the indoor hot air R1 enters the first shell 310 from the second shell 321, enters the indoor air duct 313 of the heat exchange core 311 to exchange heat to form indoor cold air L1, and the indoor cold air L1 is sent back to the computer room 10 to cool the server 20. During the heat exchange process of the indoor hot air R1 in the heat exchange core 311, the outdoor cold air L2 in the outdoor air duct 312 absorbs the energy of the indoor hot air R1 and heats up to the outdoor hot air R2, achieving heat exchange and dissipating heat for the computer room 10.

[0071] like Figure 2 and Figure 3 As shown, when the indirect evaporative cooling device 31 and the mechanical refrigeration device 32 are arranged adjacent to each other, the mechanical refrigeration device 32 is located between the indirect evaporative cooling device 31 and the wall of the machine room 10, that is, the mechanical refrigeration device 32 is located on the air inlet side of the indoor air duct 313. The indirect evaporative cooling device 31 and the mechanical refrigeration device 32 are arranged adjacent to each other to reduce the workload of on-site installation.

[0072] like Figure 1 and Figure 8 As shown, Figure 8 3 is a schematic diagram of the structure of a heat dissipation device 30. When the space of the data center 100 is limited, the indirect evaporative cooling device 31 and the mechanical refrigeration device 32 can be separately provided and both connected to the wall of the machine room 10, so as to facilitate the adjustment of the cooling capacity.

[0073] like Figure 3 As shown, the heat dissipation device 30 includes two fans 33, one fan 33 is located at the air outlet of the outdoor air duct of the heat exchange core 311, and the other fan 33 is located at the condenser 323. One fan 33 is used to discharge the outdoor hot air at the air outlet of the outdoor air duct 312 in time, and the other fan 33 is used to dissipate heat for the condenser 323 to reduce the resistance on the outdoor side.

[0074] like Fig. 9 As shown, Fig. 9It is a schematic diagram of the structure of another heat dissipation device 30. In the embodiment of the present application, the heat exchange core 311 and the condenser 323 can share a fan 33. Exemplarily, the fan 33 is located at the air outlet of the outdoor air duct of the heat exchange core 311, and the condenser 323 is located at the air outlet of the outdoor air duct 312 of the heat exchange core 311, and is located between the second spray device 315 and the fan 33. The fan 33 is used to discharge the outdoor hot air of the outdoor air duct 312 in time and dissipate heat for the condenser 323. By setting the heat exchange core 311 and the condenser 323 to share a fan 33, the fan 33 discharges the outdoor hot air of the outdoor air duct 312 and dissipates heat for the condenser 323, reduces the resistance on the outdoor side, reduces the number of fans 33, and reduces the cost.

[0075] like Fig.10 As shown, Fig.10 3 is a schematic diagram of the structure of another heat dissipation device 30. The heat dissipation device 30 includes a fresh air device 34, which is located inside the first housing 310 or outside the first housing 310 and is used to send outdoor air into the room. When the temperature of the outdoor air is not much different from that required indoors and the outdoor air quality meets the standard, the fresh air device 34 can be turned on to send outdoor air into the room. The fresh air device 34 mainly includes a filter structure and a wind valve. The filter structure is used to filter air to ensure the quality of the outdoor air, and the wind valve controls the opening or closing of the fresh air device 34.

[0076] The present application sets the air inlet 3131 of the indoor air duct 313 on the second side 3114, so that the indoor air duct 313 can be directly connected to the computer room 10, and there is no need to set a duct connecting the heat exchange core 311 and the computer room 10 in the middle, thereby saving the floor space of the data center 100. The indoor air duct 313 and the outdoor air duct 312 of the present application are set in countercurrent, which improves the heat exchange efficiency and is conducive to heat dissipation of the computer room 10. The indirect evaporative cooling device 31 and the mechanical refrigeration device 32 of the present application are set in parallel and work independently, which reduces wind resistance and achieves maximum energy saving.

[0077] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A heat dissipation device, characterized in that: The heat exchange core comprises a top, a bottom, a first side, a second side, an outdoor air duct and an indoor air duct, the first side and the second side are opposite to each other and are arranged at intervals, the first side and the second side are connected between the top and the bottom, and are surrounded by the top and the bottom to form a cavity, the outdoor air duct and the indoor air duct are located in the cavity, the outdoor air duct and the indoor air duct are channels that are not connected to each other, and the channel wall of the outdoor air duct and the channel wall of the indoor air duct can exchange heat; the air inlet of the outdoor air duct is located at the first side, the air outlet of the outdoor air duct is located at the top, the air inlet of the indoor air duct is located at the second side, and the air outlet of the indoor air duct is located at the bottom; The outdoor air duct includes a first section, and the indoor air duct includes a second section. The channel wall of the first section and the channel wall of the second section can exchange heat, and the wind direction of the outdoor wind in the first section and the indoor wind in the second section are opposite.

2. The heat dissipation device according to claim 1, characterized in that: The indoor air duct is L-shaped, S-shaped or wave-shaped.

3. The heat dissipation device according to claim 1, characterized in that: The indoor air duct includes a first sub-indoor air duct and a second sub-indoor air duct, the first sub-indoor air duct and the second sub-indoor air duct are not connected and are parallel air ducts, the length of the first sub-indoor air duct is greater than the length of the second sub-indoor air duct, and the width of the first sub-indoor air duct is greater than the width of the second sub-indoor air duct.

4. The heat dissipation device according to any one of claims 1 to 3, characterized in that: The heat dissipation device comprises a first shell, and the heat exchange core is located in the first shell; The heat dissipation device includes a mechanical refrigeration device, which includes a second shell, an evaporator and a condenser. The second shell is connected to or spaced apart from the first shell. The evaporator is located inside the second shell and is used to absorb indoor heat. The condenser is located outside the second shell and is used to dissipate indoor heat.

5. The heat dissipation device according to claim 4, characterized in that: The heat exchange core is arranged in parallel with the mechanical refrigeration equipment, and indoor hot air enters the evaporator and the heat exchange core respectively for heat exchange.

6. The heat dissipation device according to claim 4, characterized in that: The mechanical refrigeration device is located at the air inlet side of the indoor air duct.

7. The heat dissipation device according to claim 4, characterized in that: The mechanical refrigeration equipment comprises an air valve, which is located at the air inlet of the evaporator and is used to control the indoor air volume entering the evaporator.

8. The heat dissipation device according to claim 4, characterized in that: The size of the evaporator in a first direction is smaller than the size of the evaporator in a second direction, the first direction is an arrangement direction from the top to the bottom, and the second direction is perpendicular to the first direction.

9. The heat dissipation device according to claim 4, characterized in that: The heat dissipation device comprises a fan, which is located at the air outlet of the outdoor air duct. The condenser is located at the air outlet of the outdoor air duct. The fan is used to discharge outdoor hot air from the outdoor air duct and dissipate heat for the condenser.

10. The heat dissipation device according to claim 1, characterized in that: The heat dissipation device includes a first spray device and a second spray device, wherein the first spray device is located at an air inlet of the outdoor air duct, and the second spray device is located at an air outlet of the outdoor air duct.

11. A data center, characterized in that: It comprises a computer room, a server and a heat dissipation device as described in any one of claims 1 to 10, wherein the server is located in the computer room, and the heat dissipation device is used to dissipate heat for the server.

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