Liquid-cooled server cabinet, cabinet temperature control method and device

Abstract

The application relates to the technical field of liquid cooling heat dissipation, in particular to a liquid cooling server cabinet, a cabinet temperature control method and device, the liquid cooling server cabinet comprising a support frame, at least two heat exchange branches, a fan heat dissipation area and a control panel, the support frame comprising at least two server support positions and a cooling distribution unit (CDU) support position; a plurality of water inlet pipes and water outlet pipes are arranged on the cabinet, the at least two heat exchange branches comprising a main pipeline and a plurality of branch pipelines, the main pipeline comprising a common water inlet pipeline and / or a water outlet pipeline connected with the plurality of branch pipelines, and an electromagnetic valve is further arranged on the water inlet pipeline and the water outlet pipeline of each branch pipeline; the fan heat dissipation area is arranged in the area where the main pipeline is located, the fan heat dissipation area is used for accommodating the main pipeline, ventilating and heat dissipating the main pipeline, and improving the heat dissipation efficiency of the server. In addition, the CDU, the electromagnetic valves and the heat dissipation fans are controlled by the control panel, so that the self-heat dissipation of the server is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid cooling heat dissipation, in particular to a liquid cooling server cabinet, a cabinet temperature control method and device. BACKGROUND

[0002] With the development of technology, the performance and density of servers are improved, which directly leads to a huge amount of heat, so that the power consumption of the server increases sharply. The liquid cooling heat dissipation cabinet is gradually replacing the original air cooling cabinet, especially for high-performance equipment. The air cooling scheme cannot solve the heat dissipation problem caused by high energy consumption and high performance, and the liquid cooling scheme can significantly solve this problem. Therefore, the liquid cooling scheme of the data center has become a trend. The most common liquid cooling heat dissipation system is a cold plate type heat dissipation system. The cooling liquid flows through the cold plate to quickly take away the heat emitted by the server components, so that the equipment runs stably and increases the service life. However, the traditional liquid cooling heat dissipation cabinet only provides liquid cooling heat dissipation capability, and cannot provide liquid cooling heat dissipation redundancy function and self-regulating heat dissipation capability, so it cannot meet the self-regulating heat dissipation demand. SUMMARY

[0003] Therefore, the present application provides a liquid cooling server cabinet, a cabinet temperature control method and device to provide self-regulating heat dissipation function for the server.

[0004] In a first aspect, the present application provides a liquid cooling server cabinet, which comprises a support frame, at least two heat exchange branches, a fan heat dissipation area and a control panel, wherein,

[0005] The support frame comprises at least two server support positions and a cooling distribution unit (CDU) support position; a plurality of water inlet pipes and water outlet pipes are installed on the cabinet, and the water inlet pipes and the water outlet pipes form a circulating liquid loop through the at least two servers and the CDU installed on the support positions, for heat dissipation of the at least two servers;

[0006] The at least two heat exchange branches comprise a main pipe and a plurality of branch pipes, the plurality of branch pipes comprise water inlet pipes and / or water outlet pipes connected to each server, and the main pipe comprises common water inlet pipes and / or water outlet pipes connected to the plurality of branch pipes;

[0007] An electromagnetic valve is further arranged on the water inlet pipe and the water outlet pipe of each branch pipe, and the electromagnetic valve is used to open or close the water inlet pipe or the water outlet pipe connected thereto, and the opening or closing of the electromagnetic valve is controlled by the control panel;

[0008] The fan heat dissipation area is arranged in the area where the main pipe is arranged, the fan heat dissipation area comprises a plurality of fans and a heat dissipation vent, the plurality of fans are arranged at the bottom of the fan heat dissipation area, and the heat dissipation vent is arranged at the top of the cabinet or the side wall, and the fan heat dissipation area is used for accommodating the main pipe.

[0009] Each fan is connected with the control panel, and each fan is started under the control of the control panel; and the fan heat dissipation area forms an air duct with the heat dissipation vent, so as to ventilate and dissipate heat for the main pipe.

[0010] With reference to the first aspect, in a possible implementation, the common water outlet pipe is formed by connecting two or more branch water outlet pipes together, and a universal first quick release head is arranged at the end of the pipe, and the first quick release head is used for connecting the water inlet of the server.

[0011] The common water inlet pipe is formed by connecting two or more branch water inlet pipes together, and a universal second quick release head is arranged at the end of the pipe, and the second quick release head is used for connecting the water outlet of the server.

[0012] With reference to the first aspect, in another possible implementation, the electromagnetic valve is used for receiving a control signal of the control panel, and controlling the flow size and opening and closing of the liquid in the pipe according to the control signal.

[0013] With reference to the first aspect, in still another possible implementation, each branch pipe further comprises a sensor support position for mounting a flow sensor; the flow sensor is connected with the control panel, and is used for detecting the flow size of the flow through the branch pipe in real time and detecting whether the branch pipe is blocked.

[0014] With reference to the first aspect, in still another possible implementation, the sensor support position is further used for mounting a first temperature sensor; the first temperature sensor is connected with the control panel, and is used for detecting the liquid temperature of the cooling liquid flowing through the current branch pipe in real time and reporting the temperature to the control panel; and the CDU support position is further used for mounting a second temperature sensor, and the second temperature sensor is arranged at the water inlet position of the CDU and is used for detecting the temperature of the cooling liquid flowing back to the CDU and reporting the temperature to the control panel.

[0015] With reference to the first aspect, in still another possible implementation, the inner wall of the cabinet further comprises a heat preservation layer; the heat preservation layer is used for preventing the cooling liquid from conducting heat during the flowing process.

[0016] In a further possible implementation mode of the first aspect, the common water inlet pipeline is in a spiral structure in the middle region of the fan heat dissipation, rotates upward from the bottom and extends downward to connect the water inlet of the CDU.

[0017] In a further possible implementation mode of the first aspect, the number of the heat dissipation vents is two or more, wherein at least one heat dissipation vent is arranged on the top of the cabinet and communicates with the outdoor environment, and at least one heat dissipation vent is arranged on the side wall of the cabinet and communicates with the indoor environment.

[0018] In a further possible implementation mode of the first aspect, the control panel is connected with the electromagnetic valve, the at least one temperature sensor, the flow sensor, the at least two CDUs and the plurality of fans, respectively, to acquire the temperature and the flow of the cooling liquid in the pipeline in real time, control the electromagnetic valve to be turned on or turned off according to the temperature and / or the flow, and control the CDU management server or the switching server of each CDU.

[0019] The liquid-cooled server cabinet provided in the embodiment comprises a support frame, at least two heat exchange branches, a fan heat dissipation region and a control panel. The cabinet can be installed with a plurality of servers and at least two CDUs. Each CDU is connected with the servers through a water inlet pipe and a water outlet pipe to form at least two heat exchange branches, so as to provide two branches for each server to dissipate heat. The two heat exchange branches and the CDUs are controlled by the same control panel and can operate in parallel to realize 1+1 redundancy backup, so that the server equipment is prevented from being unable to dissipate heat or dissipating heat due to the downtime of one CDU.

[0020] In addition, while the at least two heat exchange branches provide heat dissipation, the fan heat dissipation region is additionally arranged in the cabinet and comprises a plurality of heat dissipation fans and heat dissipation vents. An air duct is formed in the middle region of the fan heat dissipation to ventilate and dissipate heat for the cooling liquid on the main pipeline, so as to further improve the heat dissipation efficiency.

[0021] In a second aspect, the present application provides a cabinet temperature control method, which comprises:

[0022] acquiring a first temperature parameter of a CDU water inlet branch pipe of each server managed by a first cooling distribution unit (CDU) and a second temperature parameter of a CDU water inlet branch pipe of each server managed by a second CDU in real time;

[0023] analyzing the first temperature parameter and the second temperature parameter, and generating at least one group of control signals and at least one group of indication signals when a preset condition is met;

[0024] sending the at least one group of control signals to the electromagnetic valve of each server water inlet pipe and water outlet pipe to control the opening or closing of the electromagnetic valve of each water inlet pipe and water outlet pipe.

[0025] sending the at least one group of indication signals to the first CDU and the second CDU, for instructing the first CDU and the second CDU to manage the number and quantity of servers respectively.

[0026] With reference to the second aspect, in a possible implementation, the preset condition is that: when the highest temperature in N1 servers managed by the second CDU is greater than the lowest temperature in N2 servers managed by the first CDU, and the time reaches a preset length, wherein N1 and N2 are positive integers, and N1≥1 and N2≥1.

[0027] If the first server is included in the N1 servers, and the second server is included in the N2 servers, and the temperature value currently detected by the first server is the highest in the N1 servers, and the temperature value currently detected by the second server is the lowest in the N2 servers, the preset condition is met.

[0028] The sending the at least one group of indication signals to the first CDU and the second CDU comprises:

[0029] sending a first indication signal to the first CDU, for instructing the first CDU to enable management of the first server and stop management of the second server;

[0030] sending a second indication signal to the second CDU, for instructing the second CDU to enable management of the second server and stop management of the first server.

[0031] With reference to the second aspect, in another possible implementation, the method further comprises:

[0032] when detecting that the temperature of a server exceeds a preset temperature, sending a first control signal to an electromagnetic valve corresponding to the server, the first control signal being used to control the valve opening degree of the electromagnetic valve to increase;

[0033] If the temperature of the server is detected in real time to still exceed the preset temperature, a second control signal is sent to a circulating pump, the second control signal being used to control the pressure of the circulating pump to increase;

[0034] If the temperature of the server measured after the pressure of the circulating pump is increased still exceeds the preset temperature, a third control signal is sent to a CDU corresponding to the server, the third control signal being used to control the CDU to increase the refrigeration power.

[0035] With reference to the second aspect, in a further possible implementation form of the method, the method further includes: when detecting that any one of the first CDU or the second CDU fails, enabling the CDU that does not fail to control all servers managed by the CDU that fails.

[0036] With reference to the second aspect, in a further possible implementation form of the method, the method further includes: when detecting that the running power of the first CDU or the second CDU reaches a power threshold and lasts for a preset time length, sending a fourth control signal to the first CDU or the second CDU, the fourth control signal being used to control to reduce the number of servers managed by the first CDU or the second CDU.

[0037] With reference to the third aspect, the present application provides a cabinet temperature control device, including: a storage module and a processing module, the storage module and the processing module are connected to each other in communication, the storage module stores computer instructions, and the processing module executes the computer instructions, thereby executing the cabinet temperature control method of the first aspect or any of the corresponding embodiments thereof.

[0038] In addition, the present application provides a computer readable storage medium, the computer readable storage medium stores computer instructions, and the computer instructions are used to make the computer execute the cabinet temperature control method of the first aspect or any of the corresponding embodiments thereof.

[0039] The cabinet temperature control method provided by the embodiment uses the control panel to monitor the cooling liquid temperature in each server in the cabinet, obtains the temperature parameters of the servers managed by each CDU, and generates at least one group of control signals and indication signals when detecting that the temperature parameters meet the preset conditions, wherein the control signals are used to control the electromagnetic valves of the water inlet pipeline and the water outlet pipeline on the server to open or close, and the indication signals are used to indicate the serial numbers and the quantities of the servers currently managed by each CDU, thereby realizing the control and switching of the servers managed by different CDUs, achieving that any one of the two CDUs controls the servers to dissipate heat, and further realizing the self-heat dissipation of the servers in the cabinet.

[0040] In addition, by setting the redundant CDU and the intelligent temperature control mode, the heat generated by the servers can be quickly taken away, the cooling is fast and efficient, the servers can be stably and efficiently operated for a long time, the problems of frequency reduction and downtime due to excessively high temperature in the server operation are reduced, and the service life of the server is improved. BRIEF DESCRIPTION OF DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0042] Figure 1 is a structural schematic diagram of the back of a liquid-cooled server cabinet provided by an embodiment of the present application;

[0043] Figure 2 is a structural schematic diagram of the side of a liquid-cooled server cabinet provided by an embodiment of the present application;

[0044] Figure 3 is a flow schematic diagram of a cabinet temperature control method provided by an embodiment of the present application;

[0045] Figure 4 is a structural schematic diagram of a cabinet temperature control device provided by an embodiment of the present application.

[0046] In the figure: 100, liquid-cooled server cabinet, 10, control panel, 20, electromagnetic valve, 31, first temperature sensor, 32, second temperature sensor, 33, third temperature sensor, 34, flow sensor, 41, CDU water inlet main pipeline, 42, CDU water outlet main pipeline, 43, CDU water inlet branch pipeline, 44, CDU water outlet branch pipeline, 51, server water inlet, 52, server water outlet, 61, CDU water inlet, 62, CDU water outlet, 70, cooling fan, 80, spiral cooling pipeline, 91, side wall cooling vent, 92, top cooling vent. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the following will combine 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 some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0048] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0049] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] Embodiment one

[0051] The present embodiment provides a liquid-cooled server cabinet for providing liquid-cooled heat dissipation redundancy function and autonomous control heat dissipation function. As shown in the figure, the liquid-cooled server cabinet 100 or simply referred to as "cabinet 100", comprising: a support frame, at least two heat exchange branches, a fan cooling area and a control panel 10. Figure 1

[0052] The support frame is Figure 1 As shown in the figure, the support frame includes at least two server support positions and a cooling distribution unit (CDU) support position. Among them, at least two server support positions are used to install at least two servers, and CDU support position is used to install CDU. Figure 1 Each layer can install one or more servers. The number of CDUs installed in the CDU support position is one or more, and the present embodiment installs two CDUs, such as CDU1 and CUD2.

[0053] ​The CDU is a heat management device based on liquid cooling technology, and its core task is to transfer the heat generated in the data center to the cooling medium, and then dissipate the heat through the cooling system. The CDU is responsible for uniformly distributing the coolant or water throughout the system. The CDU can adjust and control the flow, temperature and flow rate of the coolant. The CDU works with pumps, radiators, heat exchangers and controllers to ensure that the cooling system can operate efficiently and stably. Depending on the specific situation, the CDU has different functional configurations, such as sensors, monitors, flow control valves, etc. In addition, the CDU can also filter impurities in the coolant, keep the system clean, and prevent damage to other equipment components.

[0054] In this embodiment, at least two CDUs are configured in the cabinet, and each CDU can include built-in circulating pumps, heat exchange units, control management units, etc. to provide stable temperature, flow and pressure control functions.

[0055] The at least two CDUs are controlled and managed by a control panel, and can operate in parallel to achieve 1+1 redundancy backup, avoiding server equipment heat dissipation failure and downtime due to downtime of a certain CDU.

[0056] In addition, the at least two heat exchange branches include a main pipe and a plurality of branch pipes, the plurality of branch pipes include water inlet pipes and / or water outlet pipes connected to each server, and the main pipe includes a common water inlet pipe and / or a common water outlet pipe connecting the plurality of branch pipes, for cooling at least two servers.

[0057] Figure 1 The plurality of water inlet pipes and water outlet pipes include a CDU water inlet main pipe 41, a CDU water outlet main pipe 42, a CDU water inlet branch pipe 43 and a CDU water outlet branch pipe 44. Each CDU includes a CDU water inlet 61 and a CDU water outlet 62. The CDU water inlet 61 is connected to the CDU water inlet main pipe 41, and the CDU water outlet 62 is connected to the CDU water outlet main pipe 42. Each server can be managed and controlled by CDU1 or CDU2.

[0058] The main pipe is a common water inlet pipe and / or a common water outlet pipe connected to at least two servers, such as the CDU water inlet main pipe 41 and / or the common water outlet pipe, such as the CDU water outlet main pipe 42. The branch pipe is a water inlet pipe and / or a water outlet pipe connected to each server, such as the CDU water inlet branch pipe 43 and / or the water outlet pipe, such as the CDU water outlet branch pipe 44.

[0059] An electromagnetic valve 20 is also provided on the water inlet pipe and water outlet pipe of each branch pipe, and the electromagnetic valve 20 is used to open or close the water inlet pipe or water outlet pipe connected thereto. The opening or closing of the electromagnetic valve is controlled by the control panel.

[0060] like Figure 1 As shown, when the solenoid valve 20 on the left side of the first layer is opened, it controls the left CDU outlet main pipe 42 to transfer coolant through the server inlet 51 to the first server. Similarly, when the solenoid valve 20 on the right side of the first layer is opened, the coolant passing through the first server is returned to the CDU outlet main pipe 42 through the server outlet 52, and then flows back to CDU1 or CDU2, thereby realizing the flow of coolant on the first server.

[0061] In addition, the aforementioned cabinet 100 also includes a fan cooling area, such as... Figure 2 As shown, the fan cooling area is located in the area where the main pipeline is located. The fan cooling area includes multiple fans and heat dissipation vents. The multiple fans are located at the bottom of the fan cooling area, and the heat dissipation vents are located at the top or side wall of the cabinet. The fan cooling area is used to accommodate the main pipeline.

[0062] Each cooling fan 70 is connected to the control panel 10, which controls the start and stop of each cooling fan 70. Together with the cooling vent, they form an air duct in the fan cooling area to provide ventilation and cooling for the main pipeline.

[0063] In this embodiment, the cabinet can be divided into four areas: the CDU water outlet pipe area, the CDU module area, the server area, and the CDU water inlet pipe area. Additionally, it may include a fan cooling area.

[0064] Optionally, in one specific embodiment, the common water outlet pipe is a single pipe formed by connecting the ends of two or more outlet pipes together. The end of the pipe is equipped with a universal first quick-release connector for connecting to the server's water inlet. It should be understood that multiple first quick-release connectors may be used to connect different servers.

[0065] Similarly, a common water inlet pipe is formed by connecting the ends of two or more branch water inlets together. The end of this pipe is fitted with a universal second quick-release connector for connecting to the server's outlet. It should be understood that multiple second quick-release connectors may be used to connect different servers.

[0066] It should be noted that the first quick-release head and the second quick-release head are only one connection structure for connecting different servers. The inlet and outlet can also be connected to the server in other ways. This embodiment does not limit this.

[0067] In this embodiment, each of the two CDU modules has multiple branch water pipes connected to its respective CDU outlet main pipe 42 and CDU inlet main pipe 41, for example... Figure 1As shown, a plurality of CDU outlet branch pipes 44 are connected to the CDU outlet main pipe 42, and a plurality of CDU inlet branch pipes 43 are connected to the CDU inlet main pipe 41. The ends of two or more branch outlet pipes in the same area are connected together to form a pipe, or the ends of two or more branch inlet pipes in the same area are connected together to form a pipe, and a common quick release head is installed at the end of the pipe formed by the connection, and the quick release head is connected to the water inlet or outlet of the server.

[0068] In addition, in another possible implementation, an electromagnetic valve 20 is installed on the branch pipe, and the electromagnetic valve 20 can control the flow rate and opening and closing according to a signal; the electromagnetic valve has a manual switch function, and can be opened and closed through the control panel. After manual closing, the automatic opening and closing function of the electromagnetic valve is disabled, and after manual opening, the automatic opening and closing function of the electromagnetic valve is enabled.

[0069] In this embodiment, the electromagnetic valve 20 is used to receive the control signal of the control panel 10, and control the flow rate and opening and closing of the liquid in the pipe according to the control signal. Of course, the electromagnetic valve 20 can also be manually closed and opened.

[0070] The number of electromagnetic valves 20 is set according to actual needs.

[0071] In a possible implementation, each branch pipe further includes a sensor support position for installing a flow sensor 34. That is, the flow sensor 34 is arranged on the branch pipe connected to the server, such as on any CDU inlet branch pipe 43, between the first temperature sensor 31 and the electromagnetic valve 20. The flow sensor 34 is connected to the control panel 10, and is used to detect the flow rate of the flow through the branch pipe in real time, detect whether the branch pipe is blocked, and report the detection result to the control panel 10.

[0072] In addition, the sensor support position is also used to install the first temperature sensor 31, which is arranged on the branch pipe connected to the server, and is connected to the control panel 10, as shown in Figure 1 for detecting the liquid temperature of the cooling liquid flowing through the current branch pipe in real time, and reporting the temperature to the control panel 10.

[0073] The cooling liquid can be water, and the first temperature sensor 31 can detect the temperature of the water flowing through the server in real time. The number of first temperature sensors 31 can be one or more, such as two.

[0074] Optionally, in another possible implementation, the CDU support position is also used to install a second temperature sensor 32. As shown in Figure 2As shown, the second temperature sensor 32 is arranged at the water inlet position of the two CDUs, such as arranged on the CDU water inlet main pipeline 41, for detecting the temperature of the cooling liquid flowing back to the CDU, and reporting the collected CDU temperature to the control panel 10.

[0075] Further, in yet another possible implementation, the inner wall of the cabinet 100 further comprises a thermal insulation layer, which is arranged on the inner wall of the cabinet 100 Figure 1 and Figure 2 . The thermal insulation layer is used to prevent or avoid the heat conduction of the cooling liquid flowing out of the CDU, so as to cause the temperature of the cooling liquid to rise.

[0076] In addition, in the present embodiment, the water inlet pipeline of the CDU is arranged at the other side of the cabinet, which is divided into two areas. Among them, the water inlet pipelines of the two CDUs are arranged in one of the two areas, and the CDU water inlet main pipeline 41 is designed in a spiral structure in the heat dissipation channel, rotating upward from the bottom, and then extending downward to be connected to the CDU water inlet 61. Among them, the cooling liquid, such as water, flowing into the CDU1 and CDU2 from the CDU water inlet 61 is hot water. After being cooled by the CDU1 and CDU2, the water flowing out of the CDU outlet 62 is cold water.

[0077] In yet another possible implementation, a third temperature sensor 33 is arranged in the fan heat dissipation area, and the third temperature sensor 33 is arranged near the heat dissipation vent, and the number of the heat dissipation vents is two or more, and therefore, the number of the third temperature sensors 33 is also two or more, and each third temperature sensor 33 is used to detect the temperature of the air outlet, and report the temperature of the air outlet to the control panel 10 in real time, and the control panel 10 controls whether each air outlet is opened or closed according to the temperature of the air outlet.

[0078] Referring to Figure 2 As shown, at least one heat dissipation vent, such as the top heat dissipation vent 92, is arranged at the top of the cabinet and communicates with the outside. At least one heat dissipation vent, such as the side wall heat dissipation vent 91, is arranged at the side wall of the cabinet and communicates with the inside.

[0079] As shown in Figure 2 In the fan heat dissipation area of the cabinet, a plurality of variable frequency heat dissipation fans 70 are arranged at the bottom of each channel, for quickly dissipating the heat of the liquid on the main pipeline, and the number of the heat dissipation fans 70 is set to be multiple, so as to provide redundancy characteristics, and avoid that the failure of one or more fans affects the heat dissipation.

[0080] Optionally, a detachable dustproof screen or dustproof plate can be arranged at the air inlet position of the heat dissipation fan, so as to reduce the dust entering. For example, the detachable dustproof screen or dustproof plate can be arranged at the side wall heat dissipation vent 91 and the top heat dissipation vent 92, and can be quickly disassembled and cleaned.

[0081] In addition, an air baffle can be installed at each air outlet position, which can be controlled by the control panel 10.

[0082] Optionally, a third temperature sensor 33 can also be installed at the air inlet position of the cabinet for real-time detection of outdoor temperature.

[0083] Optionally, an air humidity filter can also be installed at the air inlet position of the cabinet for preventing excessive humidity inside the cabinet when the outdoor humidity is too high.

[0084] In addition, in another possible implementation, the control panel 10 is connected with the electromagnetic valve 20, the first temperature sensor 31, the second temperature sensor 32 and the third temperature sensor 33, the flow sensor 34, at least two CDUs such as CDU1 and CDU2, and a plurality of cooling fans 70, respectively, for real-time acquisition of temperature and flow of the cooling liquid in the pipeline; control of the electromagnetic valve to be turned on or off according to the temperature and / or flow, and control of each CDU management server or switching server.

[0085] Further, the control panel 10 can detect temperature, flow, pressure and other data in real time, as well as curve data, alarm information, etc., support remote control and viewing, and manually set the operation mode (performance, balance) of the liquid cooling system. The performance mode is a high-power operation of the liquid cooling system, which can reduce the heat generated by the server to the maximum extent, so that the server can exert the maximum performance. The balance mode is to ensure the stable operation of the server while reducing the power consumption of the liquid cooling system to the maximum extent.

[0086] The liquid cooling server cabinet provided by the embodiment includes a support frame, at least two heat exchange branches, a fan cooling area and a control panel. A plurality of servers and at least two CDUs can be installed in the cabinet. Each CDU is connected with the servers through the water inlet pipe and the water outlet pipe to form at least two heat exchange branches, so as to provide two sets of branches for each server to dissipate heat. The two heat exchange branches and the CDU are controlled by the same control panel, can operate in parallel, realize 1+1 redundancy backup, and avoid the situation that the server equipment fails to dissipate heat or cannot dissipate heat for the server due to the downtime of one CDU.

[0087] In addition, while the at least two heat exchange branches provide cooling, a fan cooling area is additionally provided in the cabinet, which includes a plurality of cooling fans and cooling vents. An air duct can be formed in the middle area of the fan cooling area to ventilate and cool the cooling liquid on the main pipeline, thereby further improving the cooling efficiency.

[0088] Embodiment Two

[0089] The embodiment provides a cabinet temperature control method based on the liquid-cooled server cabinet disclosed in Embodiment One. The method can be applied to the control panel 10 in the liquid-cooled server cabinet, as shown in Figure 3 The method comprises the following steps.

[0090] Step S101: Real-time acquisition of a first temperature parameter of a CDU water inlet branch pipeline of each server managed by a first CDU and a first temperature parameter of a CDU water inlet branch pipeline of each server managed by a second CDU.

[0091] For example, in the embodiment, the first CDU can be CDU1 and the second CDU can be CDU2. The first CDU and the second CDU can each manage one or more servers, for example, the first CDU is responsible for managing server 1, server 2 and server 3. The second CDU is responsible for managing server 4, server 5 and server 6.

[0092] The CDU water inlet branch pipeline of each of the servers 1-6 is provided with a first temperature sensor 31, and each first temperature sensor 31 reports the real-time collected water outlet branch pipeline temperature to the control panel 10.

[0093] Step S102: Analysis of the first temperature parameter and the second temperature parameter, and generation of at least one group of control signals and at least one group of indication signals when a preset condition is met.

[0094] The preset condition is that the highest temperature in N1 servers managed by the second CDU is greater than the lowest temperature in N2 servers managed by the first CDU, and the time reaches a preset length, wherein N1 and N2 are positive integers, and N1≥1 and N2≥1.

[0095] In a possible implementation, if the N1 servers include a first server (for example, server 1) and the N2 servers include a second server (for example, server 2), and the temperature value currently detected by the first server is the highest in the N1 servers and the temperature value currently detected by the second server is the lowest in the N2 servers, the preset condition is met.

[0096] In an example, N1=3 and N2=3, that is, the first CDU and the second CDU each manage 3 servers. If the highest water outlet temperature in the N1 servers is T1 and the lowest water outlet temperature in the N2 servers is T2 according to the comparison of the first temperature parameter and the second temperature parameter, if T1>T2 and the duration is more than a preset time length, for example, 1 min (minute) or more, it is indicated that the water outlet temperature of the 3 servers in the second CDU is greater than the lowest water outlet temperature of the 3 servers in the first CDU.

[0097] Step S103: sending the at least one group of control signals to the electromagnetic valves of the water inlet pipeline and the water outlet pipeline of each server, for controlling the opening or closing of the electromagnetic valves of each of the water inlet pipeline and the water outlet pipeline.

[0098] For example, the first control signal is sent to the electromagnetic valve corresponding to the server with the highest outlet water temperature among the N1 servers, to control the electromagnetic valve to close, so that one of the CDUs is enabled to cool the server with the highest outlet water temperature. Or the second control signal is sent to the electromagnetic valve corresponding to the server with the highest outlet water temperature among the N2 servers, to control the electromagnetic valve to open, so that the second CDU is stopped to continue cooling the server.

[0099] Step S104: sending the at least one group of indication signals to the first CDU and the second CDU, for indicating the number and quantity of the servers managed by the first CDU and the second CDU.

[0100] In a specific embodiment, the control panel 10 sends the at least one group of indication signals to the first CDU and the second CDU.

[0101] Further, the first indication signal is sent to the first CDU, for indicating the first CDU to enable to manage the first servers and stop to manage the second servers. And the second indication signal is sent to the second CDU by the control panel 10, for indicating the second CDU to enable to manage the second servers and stop to manage the first servers.

[0102] In other words, when the preset condition is met, for example, the highest temperature of the servers controlled by the CDU2 is greater than the lowest temperature of the servers controlled by the CDU1, and the time duration is more than 1 minute, the control panel 10 will control the electromagnetic valves to replace the two server control CDUs.

[0103] In a specific embodiment, when the running power of the first CDU or the second CDU reaches the power threshold and lasts for a preset duration, the fourth control signal is sent to the first CDU or the second CDU, for controlling to reduce the quantity of the servers managed by the first CDU or the second CDU.

[0104] At this time, the opening and closing of the electromagnetic valves on the CDU outlet water branch pipeline and the CDU inlet water branch pipeline controlled by the at least one group of control signals are corresponding. For example, the control signal controls the cooling liquid to enter from the CDU1, to flow out from the CDU1, or to enter from the CDU2, to flow out from the CDU2.

[0105] When one of the CDUs, such as CDU1, controls a server with a higher temperature, in order to better dissipate heat, CDU1 can be run at a higher power at this time, so that the cooling liquid temperature drops lower, and the circulating pump pressure is higher, thereby improving the heat dissipation efficiency.

[0106] Similarly, for CDU2, a server with a lower temperature can be controlled, at this time, the heat dissipation does not need to be accelerated, CDU2 is run at a lower power, at this time, the cooling liquid temperature is relatively high, and the circulating pump pressure is also reduced, so that CDU2 is run at a lower power consumption.

[0107] Optionally, in a possible implementation, the control panel 10 is further configured to: when detecting that the temperature of a server exceeds a preset temperature, send a first control signal to the electromagnetic valve corresponding to the server, the first control signal being used to control the valve opening of the electromagnetic valve to increase; thereby increasing the flow of the cooling liquid and accelerating heat dissipation.

[0108] If it is detected in real time that the temperature of the server exceeds the preset temperature, a second control signal is sent to the circulating pump on the branch where the server is located, the second control signal being used to control the circulating pump pressure to increase. Specifically, the control panel 10 controls the circulating pressure of the circulating pump, when detecting that the temperature rises and needs to be quickly dissipated, the circulating pump power is increased, the pressure is increased, the liquid flow speed is increased, and the heat dissipation of the server is accelerated.

[0109] If the temperature of the server measured after the circulating pump pressure is increased still exceeds the preset temperature, a third control signal is sent to the CDU corresponding to the server, the third control signal being used to control the CDU to increase the refrigeration power.

[0110] Specifically, when detecting that the temperature of the corresponding server rises, the electromagnetic valve corresponding to the server is opened, the water flow is increased, and the flow reaches the maximum flow. At this time, if the cooling demand still cannot be met, the circulating pressure of the circulating pump is increased, the cooling liquid flow speed is increased, until the pressure reaches the maximum, and if the cooling demand still cannot be met, the CDU refrigeration module increases the refrigeration power, so that the cooling liquid is cooled and circulated at a lower temperature, until the operating power of the CDU reaches 90% of the total power.

[0111] In this embodiment, the server cooling process can be executed according to the following priority, the cooling system runs in the following order: if it is detected that the temperature of a server is too high, the electromagnetic valve corresponding to the server is first opened, then the circulating pump pressure is increased, the fan speed is increased again, and finally the power of the CDU refrigeration system is increased, to accelerate the heat dissipation of the server.

[0112] For the two CDUs in this embodiment, if one of the CDUs, such as CDU1, reaches 90% of the total power for more than 1 minute (the preset time can be customized), the control panel will send a signal to transfer the server with the lowest temperature controlled by CDU1 to CDU2, thereby reducing the total operating power of CDU1.

[0113] If the power of CDU1 is still above 90% after the server is controlled by the exchange server, or it is still unable to reach below 90% of the total power, the server with the lowest temperature controlled by CDU1 will continue to be transferred to CDU2 for control. The specific process is that the control panel sends an indication signal to CDU1 and CDU2 respectively, indicating the server number / identification currently controlled by each CDU. After each CDU receives the indication signal sent by the control panel, it adjusts the control of the server, such as changing the originally managed servers 1-3 to only manage servers 2 and 3, thereby achieving the purpose of reducing operating power and avoiding long-term high-power operation of CDU1. This method can provide the service life of the CDU.

[0114] In addition, in another possible implementation, after the cooling liquid flows out of servers 1-N, it passes through a first temperature sensor. The first temperature sensor detects the outlet water temperature and transmits it to the control panel in real time. The first temperature sensor corresponds to the control loop of one CDU. Then, the control panel monitors the cooling of each server.

[0115] Further, when the cooling liquid flows out of the first server, it passes through a flow sensor 34. The control panel 10 controls the water flow size of the branch by the size of the electromagnetic valve and the pressure size of the circulating pump, and further judges whether the pipeline is blocked according to the current water flow size in the pipeline. For example, opening the electromagnetic valve and increasing the circulating pump under a pressure corresponds to a preset water flow rate, and collecting whether the current CDU inlet branch pipeline or CDU inlet main pipeline water flow rate reaches the preset water flow rate. If not, the branch or main pipeline may be congested, and the control panel will send an alarm information to the administrator.

[0116] When the cooling liquid flows out of the server, it passes through a first temperature sensor 31 and a second temperature sensor 32. Each temperature sensor collects the current branch pipeline temperature in real time and reports the detected temperature to the control panel in real time, so that the control panel monitors the cooling of each server.

[0117] In addition, in another possible implementation, the method further comprises: when detecting that any one of the first CDU or the second CDU fails, enabling all servers of the CDU that does not fail to control the CDU that fails. Specifically, when the control panel detects that one CDU fails and cannot normally cool the servers, the electromagnetic valves on the pipeline of the other CDU device are all opened to cool the servers in the entire cabinet, and a serious alarm information is sent.

[0118] The method enables another CDU to continue to cool the servers when one CDU fails, so that the cooling effect is uninterrupted.

[0119] Optionally, in the embodiment, the CDU water inlet main pipeline 41 is arranged in a spiral distribution in the fan cooling area and along the cabinet side wall, so as to increase the cooling area and accelerate the cooling of the cooling liquid passing through the servers.

[0120] In addition, the first CDU and the second CDU are arranged in two channels of the cooling pipeline, and the two channels do not interfere with each other, so that each channel forms an independent heat exchange loop, and the loops do not affect each other, so as to better cool each server.

[0121] In addition, in another possible implementation, each channel has N frequency conversion fans at the bottom, supports N+1 redundancy, and the minimum running power is 20% of the maximum power of the fan. The fan power can be adjusted through the control panel. When it is detected that the temperature of the CDU water inlet main pipeline is relatively high and cannot meet the server cooling demand, the control panel increases the fan power, so as to increase the fan speed, so as to quickly cool the pipeline through rapid air convection, so as to ensure that the temperature of the cooling liquid returning to the CDU is quickly reduced.

[0122] In some embodiments, the cabinet of the embodiment further comprises: an electric baffle is installed at two or more cooling air vents, and a third temperature sensor 33 is arranged at the baffle. The method of the embodiment further comprises:

[0123] When it is detected that the temperature of the electric baffle is greater than the temperature of the sensor arranged at the air inlet position of the machine room, the control panel controls the baffle to close the air baffle at the side wall cooling air vent and opens the air baffle at the top cooling air vent, so that the hot air is directly discharged to the outdoor, and the air with lower temperature is supplemented to the cabinet through the air inlet of the cabinet. Conversely, the hot air is directly discharged to the indoor, so as to realize the air flow in and out of the cabinet.

[0124] The cabinet side wall has a control panel, which can detect temperature, flow, pressure and other data, curve data, alarm information and the like in real time, and supports remote control and viewing.

[0125] The cabinet temperature control method provided by the embodiment utilizes the control panel to monitor the cooling liquid temperature in each server in the cabinet, acquires the temperature parameters of the servers managed by each CDU, and generates at least one group of control signals and indication signals when it is detected that the temperature parameters meet preset conditions, wherein the control signals are used to control the opening or closing of the electromagnetic valves of the water inlet pipeline and the water outlet pipeline on the server, and the indication signals are used to indicate the serial numbers and quantities of the servers currently managed by each CDU, so as to realize the control and switching of the servers managed by different CDUs, and achieve the automatic control of any one of the two CDUs to dissipate heat for the servers, thereby realizing the independent heat dissipation of each server in the cabinet.

[0126] In addition, the control panel can also monitor whether each device in the cabinet works normally by collecting data of various sensors, such as the real-time detection of the outlet water temperature, the vent temperature, the cooling liquid flow, the pump pressure and the like to determine the cooling liquid flow rate, the heat dissipation efficiency and the CDU operating power and the like of the current heat dissipation for each server, and supports remote control and viewing, which is convenient for the administrator to remotely operate and control.

[0127] Once an abnormality is detected, such as a CDU failure or a blockage of a branch pipeline, an alarm information can be sent in time to remind the administrator to check and maintain or the like.

[0128] In addition, by setting the redundant CDU and the intelligent temperature control mode, the heat generated by the server can be quickly taken away, the cooling is fast and efficient, the server can be stably and efficiently operated for a long time, the frequency reduction and downtime problems caused by the excessively high temperature during the operation of the server are reduced, the service life and stability of the equipment are improved while the server is stably and efficiently cooled.

[0129] The liquid-cooled server cabinet or the liquid cooling system provided by the embodiment can optimally reduce the equipment power and maximize the energy saving.

[0130] Embodiment Three

[0131] In the embodiment, a cabinet temperature control device is also provided, which is used to realize the above-mentioned embodiments and preferred embodiments, and will not be described again. As used below, the term "module" can be a combination of software and / or hardware that realizes a predetermined function. Although the device described in the following embodiments is preferably realized in software, the realization of hardware, or a combination of software and hardware, is also possible and conceived.

[0132] The embodiment provides a cabinet temperature control device, and further, the device can be the control panel 10 in the foregoing embodiments, such as Figure 4As shown, the apparatus includes a processing module 410 and a storage module 420, in addition, the apparatus can also include more or less other modules, such as an acquisition module, a sending module, etc. And the processing module 410 and the storage module 420 can be connected by bus.

[0133] The acquisition module is configured to acquire, in real time, a first temperature parameter of a CDU water inlet branch pipeline of each server managed by a first cooling distribution unit CDU, and a first temperature parameter of a CDU water inlet branch pipeline of each server managed by a second CDU.

[0134] The processing module 410 is configured to analyze the first temperature parameter and the second temperature parameter, and generate at least one set of control signals and at least one set of indication signals when a preset condition is met.

[0135] The sending module is configured to send the at least one set of control signals to electromagnetic valves of water inlet pipelines and water outlet pipelines on each server, so as to control opening or closing of the electromagnetic valves on each water inlet pipeline and water outlet pipeline; and send the at least one set of indication signals to the first CDU and the second CDU, so as to indicate server numbers and quantities managed by the first CDU and the second CDU.

[0136] In addition, the cabinet temperature control apparatus also has the function of realizing other method steps of the control panel in the foregoing embodiment two. The further function description of each module is the same as the corresponding embodiment, and will not be described here.

[0137] As shown in the structural schematic diagram of the apparatus, Figure 4 The processing module 410 can include one or more processors. Further, each processor can be a central processor, a network processor, or a combination thereof. The processor can further include a hardware chip. The hardware chip can be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device can be a complex programmable logic device, a field programmable logic gate array, a general array logic, or any combination thereof.

[0138] The storage module 420 can store instructions executable by the processing module 410, so that the processing module 410 executes the cabinet temperature control method shown in the foregoing embodiments.

[0139] The storage module 420 can include a program storage area and a data storage area. The program storage area can store an operating system and at least one application required by a function. The data storage area can store data created according to the use of the computer device, and the like. In addition, the storage module 420 can include a high-speed random access memory, and can also include a non-transient memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transient solid-state storage device.

[0140] Optionally, the storage module 420 can include a volatile memory, for example, a random access memory; the storage module can also include a non-volatile memory, for example, a flash memory, a hard disk or a solid state disk; the storage module 420 can further include a combination of the above-mentioned kinds of memories.

[0141] In addition, the cabinet temperature control device further comprises at least one interface for connecting the device with other devices or modules.

[0142] Optionally, the computer device further comprises an input device and an output device. The input device and the output device can be connected to the processing module 410 and the storage module 420 through a bus or other means.

[0143] Further, the input device can receive inputted digital or character information, and generate key signal inputs related to user settings and function controls of the computer device, such as a touch screen, a keypad, a mouse, a trackpad, a touchpad, a pointing stick, one or more mouse buttons, a trackball, a joystick, etc. The output device can include a display device, an auxiliary lighting device (for example, an LED), a tactile feedback device (for example, a vibration motor), etc. The display device described above includes but is not limited to a liquid crystal display, a light-emitting diode, a display, and a plasma display.

[0144] The embodiments of the present application also provide a computer readable storage medium, and the method according to the embodiments of the present application can be implemented in hardware, firmware, or recorded in a storage medium, or stored in a remote storage medium or a non-transitory machine readable storage medium and downloaded from a network and stored in a local storage medium, so that the method described herein can be processed by such software on a storage medium using a general purpose computer, a special purpose processor, or programmable or special purpose hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk or a solid state disk, etc. Further, the storage medium can further include a combination of the above-mentioned kinds of memories. It can be understood that the computer, the processor, the microprocessor controller or the programmable hardware include storage components that can store or receive software or computer code, when the software or computer code is accessed and executed by the computer, the processor or the hardware, the method shown in the above embodiments is implemented.

[0145] Although the embodiments of the present application are described in conjunction with the accompanying drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A liquid-cooled server cabinet, characterized by, The cabinet comprises a support frame, at least two heat exchange branches, a fan heat dissipation area and a control panel, wherein, The support frame comprises at least two server support positions and a cooling distribution unit (CDU) support position; a plurality of water inlet pipes and water outlet pipes are installed on the cabinet, and the water inlet pipes and the water outlet pipes form a circulating liquid loop with the at least two servers and the CDU installed on the support positions, for dissipating heat for the at least two servers; The at least two heat exchange branches comprise a main pipe and a plurality of branch pipes, the plurality of branch pipes comprise water inlet pipes and / or water outlet pipes connected to each server, and the main pipe comprises common water inlet pipes and / or water outlet pipes connected to the plurality of branch pipes; An electromagnetic valve is further arranged on the water inlet pipe and the water outlet pipe of each branch pipe, the electromagnetic valve is used for opening or closing the water inlet pipe or the water outlet pipe connected thereto, and the opening or closing of the electromagnetic valve is controlled by the control panel; The fan heat dissipation area is arranged in a region where the main pipe is located, the fan heat dissipation area comprises a plurality of fans and a heat dissipation vent, the plurality of fans are arranged at the bottom of the fan heat dissipation area, the heat dissipation vent is arranged at the top or the side wall of the cabinet, and the fan heat dissipation area is used for accommodating the main pipe; Each fan is connected to the control panel, each fan is started by the control panel, a wind channel is formed between the fan and the heat dissipation vent in the fan heat dissipation area, and the main pipe is ventilated and heat-dissipated; The control panel is used for acquiring temperature in real time through at least one temperature sensor, controlling the electromagnetic valve to be turned on or turned off according to the temperature, and managing or switching servers by each CDU.

2. The liquid-cooled server cabinet according to claim 1, wherein, The common water outlet pipe is formed by connecting two or more branch water outlet pipes together, and a universal first quick release head is arranged at the end of the pipe, and the first quick release head is used for connecting the water inlet of the server; The common water inlet pipe is formed by connecting two or more branch water inlet pipes together, and a universal second quick release head is arranged at the end of the pipe, and the second quick release head is used for connecting the water outlet of the server.

3. The liquid-cooled server cabinet according to claim 1, wherein, The electromagnetic valve is used for receiving a control signal of the control panel, and controlling the flow rate and opening and closing of the liquid in the pipe according to the control signal.

4. The liquid-cooled server cabinet of claim 1, wherein, Each branch pipe further comprises a sensor support position for installing a flow sensor; The flow sensor is connected to the control panel, and is used for detecting the flow rate of the liquid flowing through the branch pipe in real time, and detecting whether the branch pipe is blocked.

5. The liquid-cooled server cabinet according to claim 4, wherein, The sensor support position is further used for installing a first temperature sensor, the first temperature sensor is connected to the control panel, and is used for detecting the liquid temperature of the cooling liquid flowing through the current branch pipe in real time, and reporting the temperature to the control panel. The CDU support position is also used for installing a second temperature sensor, which is arranged at a water inlet position of the CDU and used for detecting the temperature of the cooling liquid flowing back to the CDU and reporting the temperature to the control panel.

6. The liquid-cooled server cabinet of claim 1, wherein, The inner wall of the cabinet further comprises a thermal insulation layer, which is used for preventing the cooling liquid flowing out of the CDU from conducting heat.

7. The liquid-cooled server cabinet of any of claims 1-6, wherein, The common water inlet pipeline is in a spiral structure in the middle area of the fan heat dissipation, rotates upward from the bottom and extends downward to connect the water inlet of the CDU.

8. The liquid-cooled server cabinet according to any one of claims 1-6, wherein, The number of the heat dissipation vents is two or more, wherein at least one heat dissipation vent is arranged at the top of the liquid-cooled server cabinet and communicates with the outdoor, and at least one heat dissipation vent is arranged at the side wall of the liquid-cooled server cabinet and communicates with the indoor.

9. The liquid-cooled server cabinet according to claim 7, wherein, The control panel is connected with the electromagnetic valve, the at least one temperature sensor, the flow sensor, the at least two CDUs and the plurality of fans respectively, and is further used for acquiring the flow of the cooling liquid in the pipeline in real time, controlling the electromagnetic valve to be turned on or off according to the flow, and controlling each CDU to manage or switch the servers.

10. A method of temperature control of a cabinet, characterized by, The method applied to the control panel arranged in the liquid-cooled server cabinet according to any one of claims 1-9, comprises: acquiring a first temperature parameter of the CDU water inlet branch pipeline of each server managed by a first cooling distribution unit (CDU) and a second temperature parameter of the CDU water inlet branch pipeline of each server managed by a second CDU in real time; analyzing the first temperature parameter and the second temperature parameter, and generating at least one group of control signals and at least one group of indication signals when a preset condition is met; sending the at least one group of control signals to the electromagnetic valves of the water inlet pipeline and the water outlet pipeline of each server, for controlling the electromagnetic valves of the water inlet pipeline and the water outlet pipeline of each server to be turned on or off; sending the at least one group of indication signals to the first CDU and the second CDU, for indicating the serial numbers and the number of the servers managed by the first CDU and the second CDU.

11. The method of claim 10, wherein, The preset condition is that the highest temperature of N1 servers managed by the second CDU is greater than the lowest temperature of N2 servers managed by the first CDU, and the time reaches a preset length, wherein N1 and N2 are positive integers, N1≥1 and N2≥1; If the first server is included in the N1 servers and the second server is included in the N2 servers, and the temperature value currently detected by the first server is the highest in the N1 servers and the temperature value currently detected by the second server is the lowest in the N2 servers, the preset condition is met; The sending of the at least one group of indication signals to the first CDU and the second CDU comprises: sending a first indication signal to the first CDU, for instructing the first CDU to enable management of the first server and stop management of the second server; sending a second indication signal to the second CDU, for instructing the second CDU to enable management of the second server and stop management of the first server.

12. The method according to claim 10 or 11, characterized in that, The method further comprises: when detecting that the temperature of a server exceeds a preset temperature, sending a first control signal to a solenoid valve corresponding to the server, the first control signal being used to control the valve opening of the solenoid valve to increase; if the temperature of the server is detected to still exceed the preset temperature in real time, sending a second control signal to a circulating pump, the second control signal being used to control the pressure of the circulating pump to increase; if the temperature of the server measured after the pressure of the circulating pump is increased still exceeds the preset temperature, sending a third control signal to a CDU corresponding to the server, the third control signal being used to control the CDU to increase the refrigeration power.

13. The method of claim 10 or 11, wherein, The method further comprises: when detecting that any one of the first CDU or the second CDU fails, enabling the control of a non-failed CDU to manage all servers of the failed CDU.

14. The method of claim 10 or 11, wherein, The method further comprises: when detecting that the operating power of the first CDU or the second CDU reaches a power threshold value and lasts for a preset time length, sending a fourth control signal to the first CDU or the second CDU, the fourth control signal being used to control the reduction of the number of servers managed by the first CDU or the second CDU.

15. A cabinet temperature control device, characterized by, comprising a storage module and a processing module, the storage module and the processing module being connected; the storage module stores computer instructions; the processing module executes the computer instructions, thereby performing the cabinet temperature control method of any one of claims 10 to 14.

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