Emergency cooling device for data center

Abstract

Embodiments of the present disclosure provide an emergency cooling device for a data center, comprising: a liquid supply pipe and a liquid return pipe that are used for being connected to a liquid cooling cabinet in the data center; a dry cooler connected to the liquid return pipe and configured to use air to cool a cooling liquid received from the liquid cooling cabinet via the liquid return pipe; a first fan arranged adjacent to the dry cooler and configured to drive air to flow through the dry cooler; a liquid storage tank connected to the dry cooler via a first valve and configured to store a cooling liquid and mix the cooling liquid received from the dry cooler with the stored cooling liquid; and a circulating pump, the inlet thereof being connected to the liquid storage tank via a second valve and the outlet thereof being connected to the liquid supply pipe, and the circulating pump being configured to circulate the cooling liquid from the liquid storage tank to the liquid supply pipe and supply the cooling liquid to the liquid cooling cabinet via the liquid supply pipe.

Description

Emergency cooling equipment for data centers

[0001] This application claims priority to the Chinese invention patent application entitled “Emergency Cooling Equipment for Data Centers” and application number 202310982329.1, filed on August 4, 2023. The entire contents of that application are incorporated by reference into this application. Technical Field

[0002] Embodiments of the present disclosure generally relate to the technical field of data center cooling, and more particularly, to an emergency cooling device for a data center. Background Art

[0003] With the increasing presence of the digital economy in society and the rapid development of technologies like cloud computing, the corresponding demand for computing power continues to rise, driving ever-higher power density in data centers. This increased power density results in increasing heat generation from cabinets within data center computer rooms, making traditional cooling methods and technologies unable to meet the cooling demands of this high-density heat load. Consequently, cold plate liquid cooling technology is becoming increasingly mature and widely adopted.

[0004] Compared to traditional cooling methods, cold plate liquid cooling technology differs significantly in its end-of-line cooling method, using cooler coolant to directly remove heat generated by electronic equipment like servers and switches. While cold plate liquid cooling technology offers high heat dissipation efficiency, leaks in the end-of-line piping of a liquid-cooled cabinet can result in insufficient cooling capacity for the cabinet or server, potentially impacting the server or even causing downtime. Therefore, ensuring continued cooling of affected cabinets in the event of a liquid cooling system failure is a significant challenge facing current data center operations and maintenance.

[0005] Summary of the Invention

[0006] In one aspect of the present disclosure, an emergency cooling device for a data center is provided, comprising: a liquid supply pipe and a liquid return pipe for connecting to a liquid-cooled cabinet in the data center; a dry cooler connected to the liquid return pipe and configured to use air to cool down the cooling liquid received from the liquid-cooled cabinet via the liquid return pipe; a first fan arranged adjacent to the dry cooler and configured to drive air to flow through the dry cooler; a liquid storage tank connected to the dry cooler via a first valve and configured to store cooling liquid and mix the cooling liquid received from the dry cooler with the stored cooling liquid; and a circulating pump, whose inlet is connected to the liquid storage tank via a second valve and whose outlet is connected to the liquid supply pipe, the circulating pump being configured to circulate cooling liquid from the liquid storage tank to the liquid supply pipe and provide it to the liquid-cooled cabinet via the liquid supply pipe.

[0007] It should be understood that the content described in this content section is not intended to limit the key features or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The above and other features, advantages and aspects of the embodiments of the present disclosure will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0009] FIG1 shows a schematic structural diagram of an emergency cooling device for a data center according to an embodiment of the present disclosure;

[0010] FIG2 shows a schematic structural diagram of an emergency cooling device for a data center according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0011] The preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0012] As used herein, the term "including" and its variations represent open inclusion, i.e., "including but not limited to." Unless otherwise stated, the term "or" means "and / or." The term "based on" means "based at least in part on." The terms "one example embodiment" and "an embodiment" mean "at least one example embodiment." The term "another embodiment" means "at least one additional embodiment." The terms "first," "second," etc. may refer to different or identical objects.

[0013] The failure of a single or small number of terminal cooling devices in an air-cooled computer room will not cause a significant temperature rise in the cabinets within a short period of time. The room's cooling needs can be met by activating a backup unit or lowering the air supply temperature of normally operating equipment. Liquid cooling systems use low-temperature coolant to flow through the cooling channels of electronic equipment such as servers, removing heat generated by chips and other components. In the event of a liquid cooling system failure, the high heat density of electronic equipment makes traditional emergency air cooling unable to meet the cooling needs of liquid-cooled cabinets. Currently, the industry lacks effective emergency response measures for extreme scenarios such as coolant flow interruptions or leaks in liquid-cooled cabinets. Consequently, servers may be affected or even shut down due to an inability to meet the cooling capacity required by the cabinets or servers. This poses a significant challenge to the service stability and quality of data centers.

[0014] Embodiments of the present disclosure provide an emergency cooling system for a data center. This system ensures reliable operation of a liquid-cooled cabinet in the event of a failure in the cabinet's cold plate cooling system, preventing thermal events from damaging electronic equipment within the cabinet. The following describes embodiments of the present disclosure with reference to Figures 1 and 2.

[0015] FIG1 illustrates a schematic structural diagram of an emergency cooling system for a data center according to an embodiment of the present disclosure. As shown in FIG1 , the emergency cooling system 100 described herein generally includes a liquid supply pipe 11, a liquid return pipe 12, a dry cooler 31, a first fan 32, a liquid storage tank 41, and a circulation pump 5. The liquid supply pipe 11 and the liquid return pipe 12 are connected to a liquid-cooled cabinet 2 in the data center. The dry cooler 31 is connected to the liquid return pipe 12 to cool the coolant received from the liquid-cooled cabinet 2 via the liquid return pipe 12 using air. The first fan 32 is positioned adjacent to the dry cooler 31 to drive air through the dry cooler 31. The liquid storage tank 41 is connected to the dry cooler 31 via a first valve 71 to store coolant and mix the coolant received from the dry cooler 31 with the stored coolant. The inlet of the circulation pump 5 is connected to the liquid storage tank 41 via the second valve 72 , and the outlet of the circulation pump 5 is connected to the liquid supply pipe 11 for circulating the coolant from the liquid storage tank 41 to the liquid supply pipe 11 and supplying the coolant to the liquid cooling cabinet 2 via the liquid supply pipe 11 .

[0016] In some embodiments, the emergency cooling device 100 may include a housing (not shown) and rollers disposed on the housing. The various functional components of the emergency cooling device 100 may be disposed in the housing, such as the liquid supply pipe 11, the liquid return pipe 12, the dry cooler 31, the first fan 32, the liquid storage tank 41, the circulating pump 5, and other components. The pipe openings of the liquid supply pipe 11 and the liquid return pipe 12 may extend out of the housing so as to be connected to the liquid distribution manifold of the liquid cooling cabinet 2. When emergency cooling is required for the liquid cooling cabinet 2 whose liquid cooling system has failed, the operator may push the emergency cooling device 100 to the vicinity of the liquid cooling cabinet 2, and align the pipe openings of the liquid supply pipe 11 and the liquid return pipe 12 with the liquid distribution manifold of the liquid cooling cabinet 2, thereby providing emergency cooling to the liquid cooling cabinet.

[0017] In some embodiments, a display may be provided on the box body to display the working status of the emergency cooling equipment 100 .

[0018] It should be understood that the housing and rollers are merely exemplary structures of the emergency cooling device 100. In other embodiments, the emergency cooling device 100 may utilize other methods to mount its various functional components or to move it adjacent to the liquid cooling cabinet 2. These alternatives are within the scope of this disclosure. Furthermore, the liquid distribution manifold is merely an exemplary interface for the liquid cooling cabinet 2. In other embodiments, any suitable interface that can mate with the nozzles of the liquid supply pipe 11 and the liquid return pipe 12 is acceptable.

[0019] After the emergency cooling device 100 is connected to the liquid-cooled cabinet 2, the liquid supply pipe 11 can supply low-temperature coolant to the liquid-cooled cabinet 2, thereby providing emergency cooling for the electronic equipment in the liquid-cooled cabinet 2. After absorbing heat from the electronic equipment, the coolant temperature increases. The heated coolant can be returned to the emergency cooling device 100 via the return pipe 12, where it can be circulated again.

[0020] As shown in Figure 1, the input end of the dry cooler 31 is connected to the return liquid pipe 12, and the output end of the dry cooler 31 is connected to the liquid storage tank 41 via the first valve 71. The dry cooler 31 is provided with an internal pipeline, and the coolant can flow from the input end to the output end via the internal pipeline. The coolant in the internal pipeline can exchange heat with the external air to dissipate the heat into the air, thereby reducing the temperature of the coolant. In order to enhance the heat exchange efficiency, a first fan 32 is provided near the dry cooler 31. The first fan 32 can drive air to flow through the dry cooler 31, thereby taking away the heat emitted by the coolant in the internal pipeline. In an embodiment according to the present disclosure, the first fan 32 can drive air to flow through the dry cooler 31 by sucking air, blowing air, a combination of the two methods, or any other appropriate method.

[0021] As shown in Figure 1, a first valve 71 is located at the input end of the liquid storage tank 41, and a second valve 72 is located at the output end of the liquid storage tank 41. When the emergency cooling device 100 is not being used to provide emergency cooling to the liquid-cooled cabinet 2, the first and second valves 71, 72 are closed to prevent coolant leakage from the liquid storage tank 41. The liquid storage tank 41 can store a certain amount of coolant. After the emergency cooling device 100 is connected to the liquid-cooled cabinet 2, the first and second valves 71, 72 can be opened, allowing the coolant to flow through the circuit driven by the circulation pump 5. When the emergency cooling device 100 is operating, the liquid storage tank 41 can mix the coolant received from the dry cooler 31 with the stored coolant. In some embodiments, the first and second valves 71, 72 can be electric valves, which can have an opening and closing function or further have an opening and closing degree adjustment function. In other embodiments, the first and second valves 71, 72 can be manual valves or any other suitable type of valve.

[0022] As shown in Figure 1, the inlet of the circulation pump 5 is connected to the second valve 72, and the outlet of the circulation pump 5 is connected to the liquid supply pipe 11. Driven by the circulation pump 5, coolant circulates from the liquid storage tank 41 to the liquid supply pipe 11 and is supplied to the liquid-cooled cabinet 2 via the liquid supply pipe 11, thereby providing emergency cooling for the electronic equipment in the liquid-cooled cabinet 2. After absorbing heat from the electronic equipment, the coolant temperature increases. The heated coolant can then flow through the return pipe 12 to the dry cooler 31 and the liquid storage tank 41, circulating again.

[0023] According to an embodiment of the present disclosure, in the event of a failure in the cold plate liquid cooling system of liquid-cooled cabinet 2, the liquid supply pipe 11 and liquid return pipe 12 of the emergency cooling device 100 can be connected to the liquid-cooled cabinet 2, thereby providing emergency cooling to the liquid-cooled cabinet 2. During this process, the coolant is effectively cooled by the dry cooler 31 and mixed with the low-temperature coolant in the liquid storage tank 41. It is then driven by the circulating pump 5 and flows into the liquid-cooled cabinet 2. In this way, the electronic equipment in the liquid-cooled cabinet 2 can be reliably and urgently cooled, thereby preventing electronic equipment from malfunctioning or even shutting down due to overheating.

[0024] When the emergency cooling device 100 is initially connected to the liquid-cooled cabinet 2, gas will be present in the pipeline of the emergency cooling device 100. After the first valve 71 and the second valve 72 are opened, the gas in the pipeline needs to be discharged. To this end, in some embodiments, as shown in Figure 1, the emergency cooling device 100 also includes an exhaust valve 61 and an exhaust pipe 62. The exhaust valve 61 is arranged in the liquid supply pipe 11. One end of the exhaust pipe 62 is connected to the exhaust valve 61 and the other end is connected to the liquid storage tank 41. When the first valve 71 and the second valve 72 are initially opened, the gas in the liquid supply pipe 11 can be discharged into the liquid storage tank 41 under the drive of the coolant. A filter can be provided at the top of the liquid storage tank 41 to discharge the gas into the air. With this arrangement, the gas in the pipeline of the emergency cooling device 100 can be discharged efficiently and quickly, thereby improving the heat dissipation efficiency of the coolant to the electronic equipment in the liquid-cooled cabinet 2. In addition, after the gas in the pipeline of the emergency cooling equipment 100 is discharged, a small amount of coolant may flow into the liquid storage tank 41 through the exhaust pipe 62, which can prevent the coolant from leaking into the environment, thereby avoiding waste, pollution and safety problems caused by coolant leakage.

[0025] In other embodiments, other methods can be used to exhaust the gas in the pipelines of the emergency cooling equipment 100. For example, another type of valve can be installed in the liquid supply pipe 11, which can be closed when the exhaust is complete. This method can also effectively exhaust the gas in the pipelines of the emergency cooling equipment 100, but a small amount of coolant may leak before the valve is closed, causing certain waste, pollution, and safety issues.

[0026] In some embodiments, as shown in FIG1 , the emergency cooling device 100 further includes a second fan 42, which is disposed adjacent to the liquid storage tank 41 to drive air through the liquid storage tank 41, thereby further reducing the temperature of the coolant in the liquid storage tank 41. In an embodiment according to the present disclosure, the second fan 42 can drive the air through the liquid storage tank 41 by sucking air, blowing air, a combination of the two, or any other appropriate method.

[0027] In some embodiments, the operating state of at least one of the first fan 32, the second fan 42, and the circulating pump 5 can be adjusted based on the temperature of the coolant at the inlet and outlet of the liquid-cooled cabinet 2. To this end, in some embodiments, the emergency cooling device 100 may further include a first temperature sensor and a second temperature sensor (not shown). The first temperature sensor is disposed at the liquid return pipe 12 to detect a first temperature of the coolant in the liquid return pipe 12, i.e., the temperature of the coolant at the outlet of the liquid-cooled cabinet 2. The second temperature sensor is disposed at the liquid supply pipe 11 to detect a second temperature of the coolant in the liquid supply pipe 11, i.e., the temperature of the coolant at the inlet of the liquid-cooled cabinet 2.

[0028] In some embodiments, the operating frequency of the first fan 32 can be adjusted based on the first temperature of the coolant in the liquid return pipe 12. To adjust the operating frequency of the first fan 32, a first threshold and a second threshold can be preset, where the second threshold is greater than the first threshold. When the first temperature is greater than the first threshold and less than the second threshold, the first fan 32 can operate at the first frequency, which is the stable operating frequency of the first fan 32. When the first temperature is less than the first threshold, i.e., when the temperature is relatively low, the first fan 32 can operate at a frequency lower than the first frequency to save power. When the first temperature is equal to the first threshold, the first fan 32 can operate at the first frequency or a frequency lower than the first frequency, although this is not a limitation in the embodiments of the present disclosure. When the first temperature is greater than the second threshold, i.e., when the temperature is relatively high, the first fan 32 can operate at a frequency higher than the first frequency to improve the heat dissipation performance of the dry cooler 31. When the first temperature is equal to the second threshold, the first fan 32 can operate at the first frequency or a frequency higher than the first frequency, although this is not a limitation in the embodiments of the present disclosure. In the embodiment according to the present disclosure, the first threshold value and the second threshold value may differ by any appropriate value, which can be set as needed.

[0029] In some embodiments, to conserve power, the second fan 42 is turned off when the dry cooler 31 and the first fan 32 are providing sufficient cooling capacity, and is turned on only when these conditions are insufficient. For example, the second fan 42 may be turned on when the first fan 32 is operating at maximum frequency and the first temperature is greater than a second threshold, and turned off otherwise. This approach achieves a good balance between power consumption and cooling effectiveness.

[0030] In some embodiments, the operating frequency of the circulating pump 5 can be flexibly adjusted as needed to change its ability to pump coolant. For example, the operating frequency of the circulating pump 5 can be adjusted based on the first temperature. When the first temperature is high, the operating frequency of the circulating pump 5 can be increased to increase the flow rate of coolant provided to the liquid-cooled cabinet 2. When the first temperature is low, the operating frequency of the circulating pump 5 can be decreased to reduce the flow rate of coolant.

[0031] In some embodiments, in order to detect the flow rate of the coolant in the pipeline of the emergency cooling equipment 100 , the emergency cooling equipment 100 further includes a flow meter for detecting the flow rate of the coolant in the supply pipe 11 or the return pipe 12 .

[0032] In some embodiments, the operating frequency of the first fan 32 can be adjusted based on the difference between the first temperature of the coolant in the return pipe 12 and the second temperature of the coolant in the supply pipe 11. To this end, a third threshold and a fourth threshold can be pre-set, with the fourth threshold being greater than the third threshold. When the temperature difference is greater than the third threshold and less than the fourth threshold, the first fan 32 can operate at a second frequency, which is the stable operating frequency of the first fan 32. The second frequency can be the same as or different from the first frequency, and the embodiments of the present disclosure are not limited in this regard. When the temperature difference is less than the third threshold, i.e., when the temperature difference is small, the first fan 32 can operate at a frequency lower than the second frequency. A small temperature difference indicates that the electronic equipment in the liquid cooling cabinet 2 dissipates less heat, so operating the first fan 32 at a low frequency can save electricity while ensuring sufficient cooling capacity. When the temperature difference is equal to the third threshold, the first fan 32 can operate at the second frequency or a frequency lower than the second frequency, and the embodiments of the present disclosure are not limited in this regard. When the temperature difference is greater than the fourth threshold, i.e., when the temperature is high, the first fan 32 can operate at a frequency higher than the second frequency, thereby improving the heat dissipation performance of the dry cooler 31. When the temperature difference is equal to the fourth threshold, the first fan 32 can operate at the second frequency or a frequency higher than the second frequency, and the embodiments of the present disclosure are not limited to this. In the embodiments according to the present disclosure, the third threshold and the fourth threshold can differ by any appropriate value, which can be set as needed.

[0033] In some embodiments, the second fan 42 can be turned on when the first fan 32 is running at the maximum frequency and the difference between the first temperature and the second temperature is greater than a fourth threshold, and turned off in other cases. In this way, a good balance can be provided between power consumption and cooling effect.

[0034] In some embodiments, the operating frequency of the circulation pump 5 can be adjusted based on the difference between the first temperature and the second temperature. When the temperature difference is large, the operating frequency of the circulation pump 5 can be increased to increase the flow rate of the coolant provided to the liquid-cooled cabinet 2. When the temperature difference is small, the operating frequency of the circulation pump 5 can be decreased to reduce the flow rate of the coolant.

[0035] Figure 2 illustrates a schematic diagram of the structure of an emergency cooling system for a data center according to another embodiment of the present disclosure. The structure of the emergency cooling system 100 shown in Figure 2 is similar to that of the emergency cooling system 100 shown in Figure 1 . The following description will focus on the differences between the two systems, and will omit any redundant descriptions of the common features.

[0036] As shown in Figure 2, in some embodiments, the emergency cooling system 100 further includes a third valve 73. One end of the third valve 73 is connected to the pipeline between the first valve 71 and the liquid storage tank 41. The other end of the third valve 73 is connected to the pipeline between the second valve 72 and the liquid storage tank 41. The third valve 73 is closed when the first fan 32 is operating at maximum frequency and the temperature of the coolant in the return pipe 12, or the difference between the temperature of the coolant in the return pipe 12 and the temperature of the coolant in the supply pipe 11, is greater than a predetermined threshold. It is opened otherwise. When the third valve 73 is closed, all the coolant from the dry cooler 31 flows into the liquid storage tank 41 for further cooling. When the third valve 73 is open, a portion of the coolant from the dry cooler 31 flows into the liquid storage tank 41, while the remaining portion flows through the third valve 73.

[0037] In some embodiments, when the first fan 32 operates at a maximum frequency and the first temperature of the coolant in the liquid return pipe 12 is higher than the second threshold as described above, the third valve 73 may be closed, and when the first fan 32 operates at a frequency lower than the maximum frequency or the first temperature of the coolant in the liquid return pipe 12 is lower than the second threshold, the third valve 73 may be opened.

[0038] In some embodiments, when the first fan 32 operates at a maximum frequency and the difference between the first temperature of the coolant in the return pipe 12 and the second temperature of the coolant in the supply pipe 11 is higher than the fourth threshold as described above, the third valve 73 can be closed, and when the first fan 32 operates at a frequency lower than the maximum frequency or the above temperature difference is lower than the fourth threshold, the third valve 73 is opened.

[0039] In some embodiments, the third valve 73 may be an electric valve, which may have an opening and closing function or further have an opening and closing degree adjustment function. In other embodiments, the third valve 73 may be a manual valve or any other appropriate type of valve.

[0040] According to the embodiments of the present disclosure, in the event that a failure occurs in the cold plate liquid cooling system of a liquid-cooled cabinet, an emergency cooling device can be connected to the liquid-cooled cabinet to provide emergency cooling to the liquid-cooled cabinet through a dry cooler, a liquid storage tank, and a circulating pump, thereby ensuring that the electronic equipment in the liquid-cooled cabinet can still operate reliably in the event that a failure occurs in the cold plate liquid cooling system.

[0041] Embodiments of the present disclosure are also embodied in the following examples.

[0042] Example 1. An emergency cooling device for a data center, comprising: a liquid supply pipe and a liquid return pipe for connecting to a liquid-cooled cabinet in the data center; a dry cooler connected to the liquid return pipe and configured to use air to cool down the cooling liquid received from the liquid-cooled cabinet via the liquid return pipe; a first fan arranged adjacent to the dry cooler and configured to drive air to flow through the dry cooler; a liquid storage tank connected to the dry cooler via a first valve and configured to store cooling liquid and mix the cooling liquid received from the dry cooler with the stored cooling liquid; and a circulating pump, whose inlet is connected to the liquid storage tank via a second valve and whose outlet is connected to the liquid supply pipe, the circulating pump being configured to circulate the cooling liquid from the liquid storage tank to the liquid supply pipe and provide it to the liquid-cooled cabinet via the liquid supply pipe.

[0043] Example 2. The emergency cooling equipment according to Example 1 further includes an exhaust valve and an exhaust pipe, wherein the exhaust valve is arranged in the liquid supply pipe, one end of the exhaust pipe is connected to the exhaust valve and the other end is connected to the liquid storage tank to discharge the gas in the liquid supply pipe to the liquid storage tank when the first valve and the second valve are initially opened, and a filter is provided at the top of the liquid storage tank to discharge the gas.

[0044] Example 3. The emergency cooling equipment according to Example 1 further includes a first temperature sensor, which is arranged at the return liquid pipe to detect a first temperature of the coolant in the return liquid pipe, wherein the first fan is configured to operate at a first frequency when the first temperature is greater than a first threshold and less than a second threshold, to operate at a frequency lower than the first frequency when the first temperature is less than the first threshold, and to operate at a frequency higher than the first frequency when the first temperature is higher than the second threshold.

[0045] Example 4. The emergency cooling equipment according to Example 3 further includes a second fan, which is arranged adjacent to the liquid storage tank to drive air to flow through the liquid storage tank, wherein the second fan is configured to turn on when the first fan operates at a maximum frequency and the first temperature is greater than the second threshold.

[0046] Example 5. The emergency cooling equipment of Example 3, wherein the circulation pump is configured to adjust its operating frequency based on the first temperature.

[0047] Example 6. The emergency cooling equipment according to Example 1 further includes a first temperature sensor and a second temperature sensor, the first temperature sensor being arranged at the return pipe to detect the first temperature of the coolant in the return pipe, and the second temperature sensor being arranged at the supply pipe to detect the second temperature of the coolant in the supply pipe, wherein the first fan is configured to operate at a second frequency when the difference between the first temperature and the second temperature is greater than a third threshold and less than a fourth threshold, to operate at a frequency lower than the second frequency when the difference is less than the third threshold, and to operate at a frequency higher than the second frequency when the difference is greater than the fourth threshold.

[0048] Example 7. The emergency cooling equipment according to Example 6 further includes a second fan, which is arranged adjacent to the liquid storage tank to drive air to flow through the liquid storage tank, wherein the second fan is configured to turn on when the first fan operates at a maximum frequency and the difference is greater than the fourth threshold.

[0049] Example 8. The emergency cooling device of Example 7, wherein the circulation pump is configured to adjust its operating frequency based on the difference.

[0050] Example 9. The emergency cooling equipment according to Example 1 further includes a third valve, one end of the third valve being connected to the pipe between the first valve and the liquid storage tank, and the other end of the third valve being connected to the pipe between the second valve and the liquid storage tank, wherein the third valve is configured to close when the first fan operates at a maximum frequency and the temperature of the coolant in the return pipe or the difference between the temperature of the coolant in the return pipe and the temperature of the coolant in the supply pipe is greater than a predetermined threshold.

[0051] Example 10. The emergency cooling equipment according to Example 1, further comprising a flow meter configured to detect a flow rate of the cooling liquid in the liquid supply pipe or the liquid return pipe.

[0052] Example 11. The emergency cooling equipment according to Example 1 further includes a box body and rollers arranged on the box body, wherein the box body accommodates the dry cooler, the first fan, the liquid storage tank and the circulation pump.

[0053] Example 12. The emergency cooling device of Example 1, wherein the first valve and the second valve are electric valves.

[0054] While various embodiments of the present disclosure have been described above, the above descriptions are illustrative, non-exhaustive, and not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable other persons skilled in the art to understand the embodiments disclosed herein.

Claims

1. An emergency cooling device (100) for a data center, comprising: A liquid supply pipe (11) and a liquid return pipe (12), used for connecting to a liquid cooling cabinet (2) in the data center; a dry cooler (31), connected to the liquid return pipe (12), and configured to cool the cooling liquid received from the liquid cooling cabinet (2) via the liquid return pipe (12) using air; a first fan (32), disposed adjacent to the dry cooler (31) and configured to drive air to flow through the dry cooler (31); a liquid storage tank (41) connected to the dry cooler (31) via a first valve (71) and configured to store coolant and mix the coolant received from the dry cooler (31) with the stored coolant; as well as A circulation pump (5), whose inlet is connected to the liquid storage tank (41) via a second valve (72) and whose outlet is connected to the liquid supply pipe (11), wherein the circulation pump (5) is configured to circulate the cooling liquid from the liquid storage tank (41) to the liquid supply pipe (11) and supply the cooling liquid to the liquid cooling cabinet (2) via the liquid supply pipe (11).

2. The emergency cooling equipment (100) according to claim 1, further comprising an exhaust valve (61) and an exhaust pipe (62), wherein the exhaust valve (61) is arranged in the liquid supply pipe (11), one end of the exhaust pipe (62) is connected to the exhaust valve (61) and the other end is connected to the liquid storage tank (41), so as to discharge the gas in the liquid supply pipe (11) to the liquid storage tank (41) when the first valve (71) and the second valve (72) are initially opened, and a filter is arranged at the top end of the liquid storage tank (41) to discharge the gas.

3. The emergency cooling device (100) according to claim 1, further comprising a first temperature sensor, wherein the first temperature sensor is arranged at the liquid return pipe (12) to detect a first temperature of the coolant in the liquid return pipe (12). The first fan (32) is configured to operate at a first frequency when the first temperature is greater than a first threshold and less than a second threshold, and to operate at a first frequency when the first temperature is less than the first threshold. When the first temperature is higher than the second threshold, the operating frequency is lower than the first frequency, and when the first temperature is higher than the second threshold, the operating frequency is higher than the first frequency.

4. The emergency cooling device (100) according to claim 3, further comprising a second fan (42), wherein the second fan (42) is arranged adjacent to the liquid storage tank (41) to drive air to flow through the liquid storage tank (41), wherein the second fan (42) is configured to turn on when the first fan (32) operates at a maximum frequency and the first temperature is greater than the second threshold.

5. The emergency cooling device (100) according to claim 3, wherein the circulation pump (5) is configured to adjust its operating frequency based on the first temperature.

6. The emergency cooling device (100) according to claim 1, further comprising a first temperature sensor and a second temperature sensor, wherein the first temperature sensor is arranged at the liquid return pipe (12) to detect a first temperature of the coolant in the liquid return pipe (12), and the second temperature sensor is arranged at the liquid supply pipe (11) to detect a second temperature of the coolant in the liquid supply pipe (11). The first fan (32) is configured to operate at a second frequency when the difference between the first temperature and the second temperature is greater than a third threshold and less than a fourth threshold, to operate at a frequency lower than the second frequency when the difference is less than the third threshold, and to operate at a frequency higher than the second frequency when the difference is greater than the fourth threshold.

7. The emergency cooling equipment (100) according to claim 6, further comprising a second fan (42), wherein the second fan (42) is arranged adjacent to the liquid storage tank (41) to drive air to flow through the liquid storage tank (41), wherein the second fan (42) is configured to be turned on when the first fan (32) operates at a maximum frequency and the difference is greater than the fourth threshold value.

8. The emergency cooling device (100) according to claim 7, wherein the circulation pump (5) is configured to adjust its operating frequency based on the difference.

9. The emergency cooling device (100) according to claim 1, further comprising a third valve (73), one end of the third valve (73) being connected to the pipeline between the first valve (71) and the liquid storage tank (41), and the other end of the third valve (73) being connected to the pipeline between the second valve (72) and the liquid storage tank (41), wherein the third valve (73) is configured to be closed when the first fan (32) operates at a maximum frequency and the temperature of the coolant in the return pipe (12) or the difference between the temperature of the coolant in the return pipe (12) and the temperature of the coolant in the supply pipe (11) is greater than a predetermined threshold.

10. The emergency cooling device (100) according to claim 1, further comprising a flow meter, wherein the flow meter is configured to detect the flow rate of the cooling liquid in the liquid supply pipe (11) or the liquid return pipe (12).

11. The emergency cooling device (100) according to claim 1, further comprising a box body and rollers arranged on the box body, wherein the box body accommodates the dry cooler (31), the first fan (32), the liquid storage tank (41) and the circulating pump (5).

12. The emergency cooling device (100) according to claim 1, wherein the first valve (71) and the second valve (72) are electric valves.

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