Heat dissipation device and heat dissipation method thereof, and data center

Abstract

The present invention relates to the field of heat dissipation technology, and discloses a heat dissipation device and a heat dissipation method thereof, and a data center, comprising: a radiator; a storage chamber located in the inner cavity of the radiator for storing ammonium nitrate powder; a baffle is provided at the bottom of the storage chamber; and a mechanical automatic control component is used to control the movement of the baffle to control the timing of adding ammonium nitrate powder to the inner cavity of the radiator, so that the ammonium nitrate powder reacts with water in the inner cavity of the radiator to absorb heat. The present invention uses a mechanical automatic control component to control the movement of the baffle, and adds the ammonium nitrate powder to the inner cavity of the radiator at a certain time, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator to absorb a large amount of heat, and the temperature of the solution is significantly reduced, thereby quickly absorbing the heat generated by the high-speed operation process of the heat source component in the equipment, so that the reaction of dissolving ammonium nitrate in water is used for equipment heat dissipation, which is effective and simple, saves construction costs, and simplifies the construction period.

Description

Technical Field

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

[0002] In order to provide high-performance and highly reliable computing support for massive data, processor performance has been continuously upgraded, gradually reflecting trends such as large current, high current slope, and high power density. The resulting transmission loss is getting higher and higher, and the heat problem is becoming more and more serious, bringing new challenges to the equipment's heat dissipation design.

[0003] In recent years, liquid cooling technology is commonly used for heat dissipation of equipment. It uses the heat convection or heat conduction characteristics of liquid to remove heat by immersion or flow of liquid. In related technical solutions, liquids that are not easy to conduct electricity, such as oil or fluoride, are used in liquid cooling loops to effectively handle high heat loads. However, liquid cooling loops usually set up cooling towers for cooling, and the construction cost of cooling towers is high and the construction period is long. Its cost includes not only the high initial investment, but also the subsequent maintenance costs. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a heat dissipation device and a heat dissipation method thereof, and a data center, which avoid the use of a cooling tower, save construction costs, and simplify the construction period.

[0005] In order to solve the above technical problems, the present invention provides a heat dissipation device, comprising:

[0006] heat sink;

[0007] A storage chamber located in the inner cavity of the radiator for storing ammonium nitrate powder; a baffle is provided at the bottom of the storage chamber;

[0008] The mechanical automatic control component is used to control the movement of the baffle to control the timing of adding ammonium nitrate powder into the inner cavity of the radiator, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator to absorb heat.

[0009] In a first aspect, the heat dissipation device provided by the present invention further comprises:

[0010] A first concentration detection component, used to monitor the liquid concentration in the inner cavity of the radiator;

[0011] The switch valve is used to control the liquid circulating in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator or the node outlet according to the liquid concentration monitored by the first concentration detection component.

[0012] On the other hand, in the above-mentioned heat dissipation device provided by the present invention, the switch valve is used to maintain a conducting state when the liquid concentration monitored by the first concentration detection component is lower than the set concentration threshold, and control the liquid circulating in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator; and is also used to maintain a closed state when the liquid concentration monitored by the first concentration detection component is higher than or equal to the set concentration threshold, and control the liquid circulating in the liquid cooling pipe inside the node to flow into the water outlet of the node, so as to replace the circulating liquid in the liquid cooling pipe with water.

[0013] On the other hand, in the above heat dissipation device provided by the present invention, the storage chamber is provided with an ammonium nitrate replenishment port;

[0014] The bottom of the storage chamber is provided with a first hole; the baffle is provided with a second hole;

[0015] When the first hole and the second hole overlap each other as the baffle moves, the ammonium nitrate powder enters the inner cavity of the radiator through the first hole and the second hole;

[0016] When the first hole and the second hole do not overlap with the movement of the baffle, the ammonium nitrate powder does not enter the inner cavity of the radiator.

[0017] On the other hand, in the above heat dissipation device provided by the present invention, it also includes:

[0018] Temperature sensors placed on the outer surface of the radiator and on the circuit boards around the heat source;

[0019] The temperature sensor is used to send a prompt signal to the mechanical automatic control component when the measured temperature exceeds a set temperature threshold;

[0020] The mechanical automatic control component is used to open and move the baffle after receiving the prompt signal, so that the ammonium nitrate powder enters the inner cavity of the radiator.

[0021] On the other hand, in the above-mentioned heat dissipation device provided by the present invention, the first concentration detection component is used to obtain the liquid concentration in the inner cavity of the radiator by measuring the conductivity of the medium according to the relationship between the medium concentration and the conductivity.

[0022] On the other hand, in the above heat dissipation device provided by the present invention, it also includes:

[0023] A chassis located inside the node and loaded with the radiator; the chassis has a node water inlet and a node water outlet;

[0024] The first concentration detection component is arranged on a liquid cooling pipe connected to the node water outlet.

[0025] On the other hand, in the above heat dissipation device provided by the present invention, a common pipe is provided between the liquid cooling pipe connected to the node water inlet and the liquid cooling pipe connected to the node water outlet;

[0026] The switch valve is arranged on the common pipeline;

[0027] The heat dissipation device also includes:

[0028] Micro pumps to provide power for liquid circulation;

[0029] The micro pump is arranged on the common pipeline.

[0030] On the other hand, in the above heat dissipation device provided by the present invention, it also includes:

[0031] A cabinet water distributor, used to receive liquid output from the node water outlet and input liquid into the node water inlet;

[0032] A cabinet water outlet, used to receive the liquid transmitted by the cabinet water distributor;

[0033] The cabinet water inlet is used to transmit water to the node water inlet.

[0034] On the other hand, in the above heat dissipation device provided by the present invention, the cabinet water outlet is connected to the wastewater collector through a first pipe;

[0035] The cabinet water inlet is connected to the water tank via a second pipe;

[0036] The first pipeline and the second pipeline are both provided with external water pumps.

[0037] On the other hand, in the above-mentioned heat dissipation device provided by the present invention, the first concentration detection component is used to send a closing signal to the switch valve and the micro pump when the liquid concentration in the inner cavity of the radiator is higher than or equal to the set concentration threshold, so that the switch valve and the micro pump are closed and the external water pump is turned on.

[0038] On the other hand, in the above heat dissipation device provided by the present invention, a second concentration detection component is provided on the first pipe;

[0039] The second concentration detection component is used to monitor the concentration of the liquid transmitted by the cabinet water outlet; when the concentration of the liquid transmitted by the cabinet water outlet is lower than a preset threshold, the external water pump is turned off to make the node re-enter the internal circulation state.

[0040] On the other hand, in the above heat dissipation device provided by the present invention, it also includes:

[0041] a mass sensor located inside the storage chamber;

[0042] The mass sensor is used to send out a warning signal when the mass of the ammonium nitrate powder is lower than a set mass threshold value, so as to prompt the replenishment of the ammonium nitrate powder.

[0043] In order to solve the above technical problems, the present invention also provides a heat dissipation method of a heat dissipation device, the heat dissipation device comprises a radiator, a storage chamber, a mechanical automatic control component, a first concentration detection component, and a switch valve; the storage chamber is located in the inner cavity of the radiator for storing ammonium nitrate powder; a baffle is provided at the bottom of the storage chamber; the heat dissipation method comprises:

[0044] Using a mechanical automatic control component to control the movement of the baffle to control the timing of adding ammonium nitrate powder into the inner cavity of the radiator, so that the ammonium nitrate powder reacts with water in the inner cavity of the radiator to absorb heat;

[0045] Using a first concentration detection component to monitor the liquid concentration in the inner cavity of the radiator;

[0046] According to the liquid concentration monitored by the first concentration detection component, the switch valve is used to control the liquid circulating in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator or the node water outlet.

[0047] In order to solve the above technical problems, the present invention also provides a data center, including a plurality of nodes; each node is equipped with the above heat dissipation device.

[0048] It can be seen from the above technical solution that the heat dissipation device provided by the present invention includes: a radiator; a storage chamber located in the inner cavity of the radiator for storing ammonium nitrate powder; a baffle is arranged at the bottom of the storage chamber; and a mechanical automatic control component for controlling the movement of the baffle to control the timing of adding ammonium nitrate powder to the inner cavity of the radiator, so that the ammonium nitrate powder reacts with water in the inner cavity of the radiator to absorb heat.

[0049] The beneficial effect of the present invention lies in that, in the above-mentioned heat dissipation device provided by the present invention, ammonium nitrate powder is stored in the storage chamber in the inner cavity of the radiator, and the movement of the baffle is controlled by a mechanical automatic control component, so that the ammonium nitrate powder can be added to the inner cavity of the radiator at a certain time, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator to absorb a large amount of heat, and the temperature of the solution is significantly reduced, thereby quickly absorbing the heat generated by the high-speed operation process of the heat source components in the equipment, so that the reaction of ammonium nitrate dissolving in water is used for equipment heat dissipation, which plays a cooling role, is effective and simple, avoids the use of cooling towers with high costs and long construction periods, saves construction costs, and simplifies the construction period.

[0050] In addition, the present invention also provides a corresponding heat dissipation method and data center for the heat dissipation device, which have the same or corresponding technical features as the above-mentioned heat dissipation device, further making the above-mentioned heat dissipation device more practical, and the heat dissipation method and data center have corresponding advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0052] Figure 1 A schematic structural diagram of the inner cavity of the radiator when the baffle is in an open state in the heat dissipation device provided in an embodiment of the present invention;

[0053] Figure 2 A schematic diagram of the structure of the inner cavity of the radiator when the baffle is in a closed state in the heat dissipation device provided in an embodiment of the present invention;

[0054] Figure 3 A schematic diagram of the circulating liquid forming an internal circulation when the liquid concentration provided by the embodiment of the present invention is lower than the set concentration threshold;

[0055] Figure 4 A schematic diagram of the circulating liquid forming an external circulation when the liquid concentration provided in the embodiment of the present invention is higher than or equal to the set concentration threshold;

[0056] Figure 5 A flow chart of a heat dissipation method for a heat dissipation device provided in an embodiment of the present invention.

[0057] Among them, 1 is a radiator, 2 is a storage chamber, 3 is a baffle, 4 is a mechanical automatic control component, 5 is a switch valve, 6 is a first concentration detection component, 7 is an ammonium nitrate replenishment port, A is a first hole, B is a second hole, 8 is a temperature sensor, 9 is a chassis, 10 is a node water inlet, 11 is a node water outlet, 12 is a micro pump, 13 is a cabinet water distributor, 14 is a cabinet water outlet, 15 is a cabinet water inlet, 16 is a first pipeline, 17 is a wastewater collector, 18 is a second pipeline, 19 is a water tank, 20 is an external water pump, and 21 is a second concentration detection component. DETAILED DESCRIPTION

[0058] With the growing demand for high-performance applications such as artificial intelligence, machine learning, and big data mining, all walks of life have higher and higher requirements for equipment (such as servers). In order to provide high-performance and reliable computing power support for massive data, the performance of processors such as central processing units (CPUs) and graphics processing units (GPUs) has been continuously upgraded, gradually reflecting trends such as high current, high current slope, high power density, and low voltage. The resulting transmission loss is getting higher and higher, and the heating problem is becoming more and more serious, bringing new challenges to the equipment heat dissipation design. Existing equipment heat dissipation mainly draws on air cooling technology or liquid cooling technology. Air cooling technology uses fans and air guides to guide airflow to remove heat from heating components. Liquid cooling technology has been valued for its high efficiency and low energy consumption and has gradually become popular. It uses the thermal convection or thermal conduction characteristics of liquids to remove heat through immersion or flowing liquids. Liquid cooling methods include immersion and liquid cooling circuits, using non-conductive liquids such as oil or fluoride. Liquid cooling technology can effectively handle higher heat loads, and compared with air cooling technology, liquid cooling can provide lower noise and higher heat dissipation efficiency. Due to the high cost of immersion liquid cooling, high requirements for components, and high maintenance difficulty, most servers and data centers that currently use liquid cooling solutions use liquid cooling loops for heat dissipation. However, the liquid cooling loop is usually equipped with a cooling tower for cooling the water temperature. The construction cost of the cooling tower is high and the construction period is long. The cost not only includes the high initial investment, but also involves later maintenance, water resource consumption, and chemical treatment costs. When an individual server node is abnormal, the liquid in the entire liquid cooling pipeline needs to be drained, and at least the entire cabinet where the abnormal server node is located needs to be shut down. The maintenance cost is high and the impact on the business is large.

[0059] In order to solve the above technical problems, the present invention provides a heat dissipation device, which can avoid the use of cooling towers with high costs and long construction periods, save construction costs, simplify the construction period, and when liquid flows into the inner cavity of the radiator, a single node can be plugged in and out for inspection and maintenance, greatly reducing maintenance costs while ensuring normal business operations.

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] The heat dissipation device provided in the embodiment of the present invention comprises:

[0062] heat sink;

[0063] A storage chamber located in the inner cavity of the radiator for storing ammonium nitrate powder; a baffle is provided at the bottom of the storage chamber;

[0064] The mechanical automatic control component is used to control the movement of the baffle to control the timing of adding ammonium nitrate powder into the inner cavity of the radiator, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator to absorb heat.

[0065] It should be noted that the heat sink of the present invention can be a device located inside or around a heat source (such as a processor), and the heat sink is provided to dissipate the heat generated by the heat source. The baffle of the present invention can be divided into two states during the movement, one is an open state and the other is a closed state. When the baffle is in the open state, ammonium nitrate powder will be added to the inner cavity of the heat sink; when the baffle is in the closed state, ammonium nitrate powder will not be added to the inner cavity of the heat sink.

[0066] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Figure 1 The schematic diagram of the structure of the inner cavity of the heat sink when the baffle is in the open state in the heat sink provided by the embodiment of the present invention. Figure 1 As shown, the inner cavity of the radiator 1 includes a storage chamber 2 for storing ammonium nitrate powder; a baffle 3 is provided at the bottom of the storage chamber 2; and a mechanical automatic control component 4 is connected to the baffle 3. The mechanical automatic control component 4 can control the left and right movement of the baffle 3 to open or close the baffle 3 to control the timing of adding ammonium nitrate powder to the inner cavity of the radiator 1. When the baffle 3 is in the open state, the ammonium nitrate powder will be added to the inner cavity of the radiator 1; when the baffle 3 is in the closed state, the ammonium nitrate powder will not be added to the inner cavity of the radiator 1. Figure 1 The baffle 3 is in an open state after being moved to the right by a certain distance, and ammonium nitrate powder is added into the inner cavity of the radiator 1, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator 1 to absorb heat.

[0067] The chemical equation for ammonium nitrate to dissolve in water is NH4NO3+H2O=NH3·H2O+HNO3 (reversible reaction). The process of ammonium nitrate to dissolve in water includes both diffusion and hydration. The heat Q1 absorbed in the diffusion process is greater than the heat Q2 released in the hydration process. Therefore, this process will absorb a large amount of heat and the solution temperature will be significantly reduced, so that the heat generated by the high-speed operation of the heat source can be quickly absorbed.

[0068] With the continuous addition of ammonium nitrate powder, the contents of NH3·H2O and HNO3 in the circulating liquid of the liquid cooling pipe gradually increase. When the reaction reaches a state of equilibrium, the reaction between ammonium nitrate and water cannot proceed forward and cannot exert an endothermic effect. At this time, the present invention can discharge the high-concentration liquid from the node and replace it with pure water or deionized water to continue the endothermic reaction, thereby further improving the heat dissipation effect.

[0069] Figure 2 A schematic diagram of the structure of the inner cavity of the heat sink when the baffle is in a closed state in the heat sink provided in an embodiment of the present invention. Figure 2 As shown, the mechanical automatic control component 4 controls the baffle 3 to move a certain distance to the left, so that the baffle 3 is in a closed state, and the ammonium nitrate powder will not be added to the inner cavity of the radiator 1, and will not absorb heat at this time.

[0070] In the above-mentioned heat dissipation device provided by the embodiment of the present invention, ammonium nitrate powder is stored in the storage chamber 2 in the inner cavity of the radiator 1. The movement of the baffle 3 is controlled by the mechanical automatic control component 4, and the ammonium nitrate powder can be added to the inner cavity of the radiator 1 at a certain time, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator 1 to absorb a large amount of heat. The temperature of the solution will be significantly reduced, thereby quickly absorbing the heat generated by the high-speed operation process of the heat source components in the equipment. In this way, the reaction of ammonium nitrate dissolving in water is used for equipment heat dissipation, which plays a cooling role, is effective and simple, avoids the use of cooling towers with high costs and long construction periods, saves construction costs, and simplifies the construction period.

[0071] The heat dissipation device provided in the embodiment of the present invention adopts a heat dissipation strategy that absorbs heat by means of a material reaction (i.e., the reaction between ammonium nitrate and water) to enhance the heat dissipation effect. The device to which the heat dissipation device is applied may be a server, and the main heat source of the server chassis is the CPU. A closed storage chamber may be set up in the CPU heat dissipation chamber of the server to store ammonium nitrate powder, and a mechanical automatic control component may be set up to control the left and right movement of the baffle, thereby controlling the timing of spraying the ammonium nitrate powder into the inner cavity.

[0072] Furthermore, in a specific implementation, the heat dissipation device provided in the embodiment of the present invention may further include:

[0073] A first concentration detection component, used to monitor the liquid concentration in the inner cavity of the radiator 1;

[0074] The switch valve is used to control the liquid circulating in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator 1 or the water outlet of the node according to the liquid concentration monitored by the first concentration detection component.

[0075] During implementation, as ammonium nitrate powder is continuously added, the liquid concentration in the inner cavity of the radiator 1 is constantly changing. The switch valve can be used to control the direction of liquid flow in the liquid cooling pipe inside the node. The liquid can flow into the inner cavity of the radiator 1 or the water outlet of the node, thereby forming a corresponding loop. When the liquid flows into the inner cavity of the radiator 1, a single node can be plugged in and out for inspection and maintenance without affecting the normal operation of other equipment in the system. This can greatly reduce maintenance costs while ensuring the normal operation of all data processing services.

[0076] Furthermore, in specific implementation, in the above-mentioned heat dissipation device provided in the embodiment of the present invention, the switch valve can be specifically used to maintain an on state when the liquid concentration monitored by the first concentration detection component is lower than the set concentration threshold, so as to control the liquid circulating in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator; and to maintain a closed state when the liquid concentration monitored by the first concentration detection component is higher than or equal to the set concentration threshold, so as to control the liquid circulating in the liquid cooling pipe inside the node to flow into the water outlet of the node, so as to replace the circulating liquid in the liquid cooling pipe with water.

[0077] It should be noted that each node (such as each server node) may include a first concentration detection component, a switch valve, a radiator, a storage room, a mechanical automatic control component, and the like.

[0078] The present invention can pre-calculate the concentration of the product in the equilibrium state according to the temperature, pressure and reactant concentration, and use the calculated concentration of the product in the equilibrium state as the set concentration threshold.

[0079] Figure 3 A schematic diagram of the inner circulation of the circulating liquid when the liquid concentration provided in the embodiment of the present invention is lower than the set concentration threshold. Figure 3 As shown, the switch valve 5 can maintain the on state when the liquid concentration monitored by the first concentration detection component 6 is lower than the set concentration threshold, and control the circulating liquid in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator 1. It can be understood that when the liquid concentration monitored by the first concentration detection component 6 is lower than the set concentration threshold, the circulating liquid can form an "internal circulation" in the liquid cooling pipe inside the node, that is, the circulating liquid can flow through the inner cavity of the radiator 1 of the first processor and the second processor in sequence, the first concentration detection component 6, the switch valve 5 in the on state, and then flow into the inner cavity of the radiator 1 of the first processor again.

[0080] Figure 4 A schematic diagram of an embodiment of the present invention providing a liquid concentration higher than or equal to a set concentration threshold value, wherein the circulating liquid forms an external circulation. Figure 4As shown, the switch valve 5 can remain in a closed state when the liquid concentration monitored by the first concentration detection component 6 is higher than or equal to the set concentration threshold, and control the circulating liquid in the liquid cooling pipe inside the node to flow into the node outlet to replace the circulating liquid in the liquid cooling pipe with water. It can be understood that when the liquid concentration monitored by the first concentration detection component 6 is higher than or equal to the set concentration threshold, the circulating liquid can form an "external circulation" in the liquid cooling pipe inside the node, that is, the circulation of the liquid is switched from "internal circulation" to "external circulation". At this time, the circulating liquid can flow through the inner cavity of the radiator 1 of the first processor and the second processor in sequence, the first concentration detection component 6, and then flow into the node outlet. The node outlet can discharge waste water, and the node inlet can flow into pure deionized water to gradually replace the circulating liquid in the liquid cooling pipe with pure deionized water.

[0081] Since the reaction between ammonium nitrate and water mentioned above is a reversible reaction, and the main components of the high-concentration liquid are NH3·H2O and HNO3, pure ammonium nitrate can be obtained again through a series of processes under certain conditions in industrial production, and can also be used as a raw material for fertilizer production in fertilizer plants.

[0082] Furthermore, in a specific implementation, in the heat dissipation device provided in the embodiment of the present invention, Figure 1 As shown, the storage chamber 2 may be provided with an ammonium nitrate replenishing port 7. Ammonium nitrate powder may be added to the storage chamber 2 through the ammonium nitrate replenishing port 7, which is convenient and safe to operate.

[0083] A first hole A may be provided at the bottom of the storage chamber 2; a second hole B may be provided at the baffle 3; when the first hole A and the second hole B overlap with each other as the baffle 3 moves, the ammonium nitrate powder enters the inner cavity of the radiator 1 through the first hole A and the second hole B; when the first hole A and the second hole B do not overlap with the movement of the baffle 3, the ammonium nitrate powder does not enter the inner cavity of the radiator 1.

[0084] In implementation, Figure 1 As shown, the first hole A at the bottom of the storage chamber 2 and the second hole B set on the baffle 3 overlap with each other, indicating that the baffle 3 is in an open state at this time, and the ammonium nitrate powder can be sprayed into the inner cavity of the radiator 1 through the first hole A and the second hole B.

[0085] like Figure 2 As shown, the first hole A at the bottom of the storage chamber 2 and the second hole B set on the baffle 3 do not overlap with each other, but are staggered, indicating that the baffle 3 is in a closed state at this time, the storage chamber 2 is still in a closed state, and the ammonium nitrate powder cannot be sprayed into the inner cavity of the radiator 1.

[0086] Furthermore, in a specific implementation, in the heat dissipation device provided in the embodiment of the present invention, Figure 1As shown, it can also include: a temperature sensor 8 placed on the outer surface of the radiator 1 and the circuit board around the heat source; the temperature sensor 8 can be used to send a prompt signal to the mechanical automatic control component 4 when the measured temperature exceeds the set temperature threshold; the mechanical automatic control component 4 can be used to open and move the baffle 3 after receiving the prompt signal, so that the ammonium nitrate powder enters the inner cavity of the radiator 1.

[0087] In implementation, Figure 1 As shown, a temperature sensor 8 can be placed on the outer surface of the heat sink 1 and on a printed circuit board (PCB) near a heat source (such as a processor). When the temperature measured by the temperature sensor 8 exceeds a set temperature threshold, the baffle 3 is opened and moved by a mechanical automatic control component 4 so that the first hole A and the second hole B overlap with each other, and ammonium nitrate powder enters the inner cavity of the heat sink 1 through the first hole A and the second hole B to react with water.

[0088] In addition, it should be added that the temperature sensor 8 can also be used to send a stop signal to the mechanical automatic control component 4 when the measured temperature does not exceed the set temperature threshold; the mechanical automatic control component 4 can also be used to move the baffle 3 after receiving the stop signal, so that the first hole A and the second hole B are staggered, and the ammonium nitrate powder does not enter the inner cavity of the radiator 1.

[0089] In implementation, Figure 2 As shown, when the temperature measured by the temperature sensor 8 does not exceed the set temperature threshold, the baffle 3 is moved by the mechanical automatic control component 4 so that the first hole A and the second hole B do not overlap with each other but are staggered, and the ammonium nitrate powder will not enter the inner cavity of the radiator 1.

[0090] Furthermore, in a specific implementation, in the heat dissipation device provided in the embodiment of the present invention, the first concentration detection component 6 can be specifically used to obtain the liquid concentration in the inner cavity of the radiator 1 by measuring the conductivity of the medium based on the relationship between the medium concentration and the conductivity.

[0091] In implementation, the first concentration detection component 6 can indirectly measure the liquid concentration in the inner cavity of the radiator 1 by measuring the conductivity of the medium based on the direct relationship between the medium concentration and the conductivity.

[0092] Furthermore, in a specific implementation, in the heat dissipation device provided in the embodiment of the present invention, Figure 3 As shown, it may also include: a chassis 9 located inside the node and equipped with a radiator 1; the chassis 9 has a node water inlet 10 and a node water outlet 11. The first concentration detection component 6 may be arranged on a liquid cooling pipe connected to the node water outlet 11.

[0093] In implementation, the node water inlet 10 can add deionized water into the inner cavity of the radiator 1 along the liquid cooling pipe. When the baffle 3 is in an open state, the ammonium nitrate powder can be sprayed into the inner cavity of the radiator 1 and react with the deionized water to absorb a large amount of heat. The product will flow into the node water outlet 11 along the liquid cooling pipe. Since the first concentration detection component 6 is arranged on the liquid cooling pipe connected to the node water outlet 11, the first concentration detection component 6 can effectively detect the concentration of the product.

[0094] Furthermore, in a specific implementation, in the heat dissipation device provided in the embodiment of the present invention, Figure 3 As shown, there is a common pipeline between the liquid cooling pipeline connected to the node water inlet 10 and the liquid cooling pipeline connected to the node water outlet 11; the switch valve 5 can be arranged on the common pipeline.

[0095] In implementation, the switch valve 5 is arranged on a common pipe between the liquid cooling pipe connected to the node water inlet 10 and the liquid cooling pipe connected to the node water outlet 11, so as to further ensure that when the switch valve 5 is in the on state, the liquid cooling pipe can effectively form an "internal circulation".

[0096] In addition, in the specific implementation, in the above heat dissipation device provided in the embodiment of the present invention, if Figure 4 As shown, it may also include: a micro pump 12 for providing power for liquid circulation; the micro pump 12 may be arranged on a common pipeline.

[0097] In practice, the micro pump 12 can provide power for the circulation of liquid, and can be specifically arranged on a common pipeline. Since the micro pump 12 is only used for the circulation of liquid within the node, the power is very low.

[0098] Furthermore, in a specific implementation, in the heat dissipation device provided in the embodiment of the present invention, Figure 4 As shown, it may also include:

[0099] The cabinet water distributor 13 is used to receive the liquid output from the node water outlet 11 and input the liquid to the node water inlet 10;

[0100] The cabinet water outlet 14 is used to receive the liquid transmitted by the cabinet water distributor 13;

[0101] The cabinet water inlet 15 is used to transmit water to the node water inlet 10.

[0102] In implementation, the cabinet water distributor 13 can receive liquid output from the node water outlet 11, and can also input liquid to the node water inlet 10. The interior of the cabinet water distributor 13 may include a plurality of first liquid distribution channel structures having cabinet water outlets 14, and a plurality of second liquid distribution channel structures having cabinet water inlets 15. The first liquid distribution channel structure has a plurality of interfaces connected to the node water outlets 11 corresponding to different nodes through liquid cooling pipes. The first liquid distribution channel structure is used to guide the liquid to flow to the corresponding cabinet water outlet 14. The cabinet water outlet 14 is the water outlet of the cabinet water distributor 13, and can receive the liquid transmitted by the cabinet water distributor 13. The second liquid distribution channel structure has a plurality of interfaces connected to the node water inlets 10 corresponding to different nodes through liquid cooling pipes. The second liquid distribution channel structure is used to guide the water coming in from the cabinet water inlet 15 to flow into the corresponding node water inlet 10. The second liquid distribution channel structure is used to guide the water coming in from the cabinet water inlet 15 to flow into the corresponding node water inlet 10. The cabinet water inlet 15 is the water inlet of the cabinet water distributor 13 , and can transmit deionized water to the node water inlet 10 .

[0103] Furthermore, in a specific implementation, in the heat dissipation device provided in the embodiment of the present invention, Figure 4 As shown, the cabinet water outlet 14 can be connected to the wastewater collector 17 through the first pipe 16;

[0104] The cabinet water inlet 15 is connected to the water tank 19 through a second pipe 18;

[0105] External water pumps 20 are disposed on both the first pipe 16 and the second pipe 18 .

[0106] In practice, the cabinet water outlet 14 can transfer the liquid transmitted by the cabinet water distributor 13 into the wastewater collector 17 through the first pipe 16, and the wastewater collected by the wastewater collector 17 can be transported to the fertilizer plant for recycling. The cabinet water inlet 15 can transfer the deionized water in the water tank 19 to the node water inlet 10 through the second pipe 18. The first pipe 16 and the second pipe 18 can be provided with an external water pump 20, which is powered by the external water pump 20 to promote the operation of the "external circulation".

[0107] Furthermore, in a specific implementation, in the above-mentioned heat dissipation device provided in an embodiment of the present invention, the first concentration detection component 6 can be specifically used to send a closing signal to the switch valve 5 and the micro pump 12 when the liquid concentration in the inner cavity of the radiator 1 is higher than or equal to the set concentration threshold, so that the switch valve 5 and the micro pump 12 are closed and the external water pump 20 is turned on.

[0108] In implementation, when the liquid concentration in the inner cavity of the radiator 1 is higher than or equal to the set concentration threshold, the first concentration detection component 6 can send a closing signal to the switch valve 5 and the micro pump 12, so that the switch valve 5 and the micro pump 12 are closed and the external water pump 20 is turned on.

[0109] Furthermore, in a specific implementation, in the above-mentioned heat dissipation device provided in an embodiment of the present invention, a second concentration detection component 21 is provided on the first pipe 16; the second concentration detection component 21 is used to monitor the concentration of the liquid transmitted by the cabinet water outlet 14; when the concentration of the liquid transmitted by the cabinet water outlet 14 is lower than a preset threshold value, the external water pump 20 is turned off, so that the node re-enters the internal circulation state.

[0110] In implementation, the second concentration detection component 21 can monitor in real time the concentration of the liquid transmitted by the cabinet outlet 14. When the concentration of the liquid transmitted by the cabinet outlet 14 is lower than the preset threshold, the external water pump 20 is closed and the node re-enters the internal circulation state.

[0111] Furthermore, in a specific implementation, the above-mentioned heat dissipation device provided in the embodiment of the present invention may also include: a mass sensor located inside the storage chamber 2; the mass sensor is used to send a warning signal when the mass of the ammonium nitrate powder is lower than a set mass threshold, to prompt the replenishment of the ammonium nitrate powder.

[0112] In practice, the present invention can place a quality sensor inside the storage chamber 2. When the quality of the ammonium nitrate powder is lower than a set quality threshold, the quality sensor sends a warning signal, thereby prompting the staff to replenish the ammonium nitrate powder to ensure the normal operation of the device.

[0113] The heat dissipation device provided in the embodiment of the present invention is applied to a server. Assuming that the server CPU temperature exceeds 65°C, a cooling intervention is required. Under this temperature condition, the equilibrium concentrations of the various substances in the reaction of ammonium nitrate dissolving in water are: [NH4NO3]=0.01mol / L, [NH3·H2O]=0.02mol / L, [HNO3]=0.02mol / L. Based on the above conditions, the specific implementation of the heat dissipation device of the present invention is described:

[0114] First, in the production process of the CPU radiator, a certain amount of ammonium nitrate powder with a purity of 99.99% is placed in advance, and the baffle 3 remains closed. In the design of the radiator, a quality sensor can be placed and an ammonium nitrate replenishment port 7 can be reserved. When the quality of ammonium nitrate is less than 20%, it needs to be replenished in time.

[0115] During the server assembly process, a heat sink 1 is installed for the CPU, and a temperature sensor 8 is connected to the mechanical automatic control component 4 using a cable.

[0116] Then, each server node is assembled into a whole cabinet, and before the whole cabinet is powered on, the external water pump 20 is turned on to fill the liquid cooling pipe of each node with deionized water.

[0117] The whole cabinet is powered on and a single node is started and operated. The first concentration detection component 6 detects that the current nitric acid concentration is lower than 0.02 mol / L. The switch valve 5 is opened and the micro pump 12 is running. The entire node is in the "internal circulation" state of the liquid cooling pipeline.

[0118] When the temperature sensor 8 detects that the CPU temperature is higher than 65°C, it transmits a signal to the mechanical automatic control component 4, which opens the baffle 3 to release a small amount of ammonium nitrate powder. The ammonium nitrate reacts with water, absorbs heat, cools the CPU and reduces the temperature of the liquid in the pipe, thereby cooling the entire server node.

[0119] The first concentration detection component 6 monitors the concentration of nitric acid in the liquid in real time. When it is found that the concentration of nitric acid is ≥0.02 mol / L, the signal is transmitted to the switch valve 5 and the micro pump 12, the switch valve 5 and the micro pump 12 are closed, the external water pump 20 is turned on, and the "external circulation" is started.

[0120] The high-concentration liquid in the pipeline is discharged through "external circulation" and refilled with pure deionized water. Under the external circulation state, the concentration detection unit in the node is in a dormant state. A second concentration detection component 21 is set at the water outlet of the whole cabinet. When the nitric acid concentration in the discharged liquid is lower than 1×10 -4 mol / L, the external water pump 20 is turned off and each node of the server re-enters the internal circulation state.

[0121] Finally, the high-concentration solution (a mixed solution of NH3·H2O and HNO3) collected by the data center is transmitted to a fertilizer plant or other chemical companies to be used as a raw material for fertilizer production in the fertilizer plant or to obtain pure ammonium nitrate.

[0122] It should be pointed out that the heat dissipation device provided in the embodiment of the present invention can make the liquid cooling pipe of the server node in the internal circulation state most of the time, reduce the dependence on the data center's heat dissipation system, and is suitable for small data centers with low budgets, or as a redundant backup data center. At the same time, when the server is in the internal circulation state, a single node can be plugged in and out for inspection and maintenance without affecting the normal operation of the entire cabinet or even other servers in the entire heat dissipation system, which can greatly reduce maintenance costs and ensure the normal operation of all data processing services.

[0123] In the above embodiments, the heat dissipation device is described in detail. Based on the same inventive concept, the embodiments of the present invention also provide a heat dissipation method of the heat dissipation device and corresponding embodiments of the data center.

[0124] Figure 5 Flow chart of the heat dissipation method of the heat dissipation device provided in the embodiment of the present invention. The heat dissipation device provided in the embodiment of the present invention comprises a radiator, a storage chamber, a mechanical automatic control component, a first concentration detection component, and a switch valve; the storage chamber is located in the inner cavity of the radiator for storing ammonium nitrate powder; a baffle is provided at the bottom of the storage chamber; the heat dissipation method of the heat dissipation device provided in this embodiment may include the following steps:

[0125] S501. Use a mechanical automatic control component to control the movement of the baffle to control the timing of adding ammonium nitrate powder into the inner cavity of the radiator, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator to absorb heat.

[0126] In the heat dissipation method of the above-mentioned heat dissipation device provided in an embodiment of the present invention, the above-mentioned steps can be executed, and the movement of the baffle can be controlled by using a mechanical automatic control component, and ammonium nitrate powder can be added to the inner cavity of the radiator at a certain time, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator to absorb a large amount of heat, and the solution temperature will be significantly reduced, thereby quickly absorbing the heat generated by the high-speed operation process of the heat source components in the equipment. In this way, the reaction of ammonium nitrate dissolving in water is used for equipment heat dissipation, which plays a cooling role, is effective and simple, avoids the use of cooling towers with high costs and long construction periods, saves construction costs, and simplifies the construction period.

[0127] Since the embodiments of the heat dissipation method and the heat dissipation device correspond to each other, the embodiments of the heat dissipation method refer to the description of the embodiments of the heat dissipation device, which will not be described here. And it has the same beneficial effects as the heat dissipation device mentioned above.

[0128] Furthermore, in a specific implementation, in the heat dissipation method of the above-mentioned heat dissipation device provided in an embodiment of the present invention, step S501 utilizes a mechanical automatic control component to control the movement of the baffle to control the timing of adding ammonium nitrate powder to the inner cavity of the radiator, which may specifically include: utilizing a mechanical automatic control component to control the movement of the baffle, when the baffle is in an open state, the ammonium nitrate powder is added to the inner cavity of the radiator; when the baffle is in a closed state, the ammonium nitrate powder is not added to the inner cavity of the radiator.

[0129] In implementation, the bottom of the storage chamber may be provided with a first hole; the baffle plate may be provided with a second hole. As the baffle plate moves, when the first hole and the second hole overlap each other, the baffle plate is in an open state, and ammonium nitrate powder can be sprayed into the inner cavity of the radiator through the first hole and the second hole. Conversely, when the first hole and the second hole do not overlap each other, the baffle plate is in a closed state, and ammonium nitrate powder cannot be sprayed into the inner cavity of the radiator.

[0130] Furthermore, in a specific implementation, in the heat dissipation method of the heat dissipation device provided in the embodiment of the present invention, as Figure 5 As shown, it may also include:

[0131] S502: Use a first concentration detection component to monitor the liquid concentration in the inner cavity of the radiator.

[0132] S503 , according to the liquid concentration monitored by the first concentration detection component, use a switch valve to control the liquid circulating in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator or the water outlet of the node.

[0133] In implementation, after executing step S501, a first concentration detection component can be used to monitor the liquid concentration in the inner cavity of the radiator, and the liquid flow direction in the liquid cooling pipe inside the node can be controlled by a switch valve according to the monitored liquid concentration, so that the liquid can flow into the inner cavity of the radiator or the node outlet, thereby forming a corresponding loop. When the liquid flows into the inner cavity of the radiator, a single node can be plugged in and out for inspection and maintenance without affecting the normal operation of other equipment in the system, greatly reducing maintenance costs, and ensuring the normal operation of all data processing services.

[0134] Further, in a specific implementation, in the heat dissipation method of the heat dissipation device provided in an embodiment of the present invention, step S503 controls the liquid flowing in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator or the water outlet of the node by using a switch valve according to the liquid concentration monitored by the first concentration detection component, which may specifically include:

[0135] When the liquid concentration monitored by the first concentration detection component is lower than the set concentration threshold, the switch valve remains in the on state, and the switch valve is used to control the liquid flowing in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator;

[0136] When the liquid concentration monitored by the first concentration detection component is higher than or equal to the set concentration threshold, the switch valve remains closed, and the switch valve is used to control the liquid circulating in the liquid cooling pipe inside the node to flow into the node outlet to replace the circulating liquid in the liquid cooling pipe with water.

[0137] Furthermore, in a specific implementation, the heat dissipation method of the heat dissipation device provided in the embodiment of the present invention further includes:

[0138] The temperature is measured using temperature sensors placed on the outer surface of the radiator and on circuit boards around the heat source. When the measured temperature exceeds the set temperature threshold, a prompt signal is sent to the mechanical automatic control component to open and move the baffle, allowing the ammonium nitrate powder to enter the inner cavity of the radiator.

[0139] Further, in a specific implementation, in the heat dissipation method of the above-mentioned heat dissipation device provided in an embodiment of the present invention, step S502 uses a first concentration detection component to monitor the liquid concentration in the inner cavity of the radiator, which may specifically include: using the first concentration detection component to obtain the liquid concentration in the inner cavity of the radiator by measuring the conductivity of the medium based on the relationship between the medium concentration and the conductivity.

[0140] Furthermore, in a specific implementation, the heat dissipation method of the heat dissipation device provided in the embodiment of the present invention may further include:

[0141] The cabinet water distributor receives the liquid outputted from the node water outlet, and the cabinet water outlet is used to flow the liquid transmitted by the cabinet water distributor into the wastewater collector through the first pipe;

[0142] The cabinet water distributor is used to input liquid into the node water inlet, and the cabinet water inlet is used to transmit the deionized water in the water tank to the node water inlet through the second pipeline.

[0143] For more specific working processes of the above steps, please refer to the corresponding contents disclosed in the above embodiments, which will not be repeated here.

[0144] Based on the same inventive concept, an embodiment of the present invention further provides a data center, including a plurality of nodes; each node is equipped with the above-mentioned heat dissipation device.

[0145] In implementation, each node may share a cabinet water distributor, an external water pump, a second concentration detection component, a wastewater collector, and a water tank. The specific components shared by each node may be adjusted according to the actual application scenario and are not limited here.

[0146] Since the principle of solving the problem in the data center is similar to that of the aforementioned heat dissipation device, the implementation of the data center can refer to the implementation of the heat dissipation device, and the repeated parts will not be repeated.

[0147] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0148] Finally, it should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention; the terms "include", "comprise" and "have" and any other variations thereof in the present invention are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. In the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0149] For the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the order of the actions described, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0150] Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the embodiments of the present invention according to the circumstances without conflict and without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

[0151] The heat dissipation device and heat dissipation method and data center provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention, rather than to limit the scope of protection of the invention; at the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A heat dissipation device, characterized in that: include: heat sink; A storage chamber located in the inner cavity of the radiator for storing ammonium nitrate powder; a baffle is provided at the bottom of the storage chamber; A mechanical automatic control component, used to control the movement of the baffle to control the timing of adding ammonium nitrate powder into the inner cavity of the radiator, so that the ammonium nitrate powder reacts with the water in the inner cavity of the radiator to absorb heat; A first concentration detection component, used to monitor the liquid concentration in the inner cavity of the radiator; The switch valve is used to maintain a conducting state when the liquid concentration monitored by the first concentration detection component is lower than a set concentration threshold, and control the liquid circulating in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator; and is also used to maintain a closed state when the liquid concentration monitored by the first concentration detection component is higher than or equal to the set concentration threshold, and control the liquid circulating in the liquid cooling pipe inside the node to flow into the water outlet of the node, so as to replace the circulating liquid in the liquid cooling pipe with water.

2. The heat dissipation device according to claim 1, characterized in that: The storage chamber is provided with an ammonium nitrate replenishment port; The bottom of the storage chamber is provided with a first hole; the baffle is provided with a second hole; When the first hole and the second hole overlap each other as the baffle moves, the ammonium nitrate powder enters the inner cavity of the radiator through the first hole and the second hole; When the first hole and the second hole do not overlap with the movement of the baffle, the ammonium nitrate powder does not enter the inner cavity of the radiator.

3. The heat dissipation device according to claim 1, characterized in that: Also includes: Temperature sensors placed on the outer surface of the radiator and on the circuit boards around the heat source; The temperature sensor is used to send a prompt signal to the mechanical automatic control component when the measured temperature exceeds a set temperature threshold; The mechanical automatic control component is used to open and move the baffle after receiving the prompt signal, so that the ammonium nitrate powder enters the inner cavity of the radiator.

4. The heat dissipation device according to claim 1, characterized in that: The first concentration detection component is used to obtain the liquid concentration in the inner cavity of the radiator by measuring the conductivity of the medium according to the relationship between the medium concentration and the conductivity.

5. The heat dissipation device according to claim 1, characterized in that: Also includes: A chassis located inside the node and loaded with the radiator; the chassis has a node water inlet and a node water outlet; The first concentration detection component is arranged on a liquid cooling pipe connected to the node water outlet.

6. The heat dissipation device according to claim 5, characterized in that: A common pipe is provided between the liquid cooling pipe connected to the node water inlet and the liquid cooling pipe connected to the node water outlet; The switch valve is arranged on the common pipeline; The heat dissipation device also includes: Micro pumps to provide power for liquid circulation; The micro pump is arranged on the common pipeline.

7. The heat dissipation device according to claim 6, characterized in that: Also includes: A cabinet water distributor, used to receive liquid output from the node water outlet and input liquid into the node water inlet; A cabinet water outlet, used to receive the liquid transmitted by the cabinet water distributor; The cabinet water inlet is used to transmit water to the node water inlet.

8. The heat dissipation device according to claim 7, characterized in that: The water outlet of the cabinet is connected to the wastewater collector through a first pipe; The cabinet water inlet is connected to the water tank via a second pipe; The first pipeline and the second pipeline are both provided with external water pumps.

9. The heat dissipation device according to claim 8, characterized in that: The first concentration detection component is used to send a closing signal to the switch valve and the micro pump when the liquid concentration in the inner cavity of the radiator is higher than or equal to the set concentration threshold, so that the switch valve and the micro pump are closed and the external water pump is turned on.

10. The heat dissipation device according to claim 9, characterized in that: A second concentration detection component is provided on the first pipeline; The second concentration detection component is used to monitor the concentration of the liquid transmitted by the cabinet water outlet; when the concentration of the liquid transmitted by the cabinet water outlet is lower than a preset threshold, the external water pump is turned off to make the node re-enter the internal circulation state.

11. The heat dissipation device according to claim 1, characterized in that: Also includes: a mass sensor located inside the storage chamber; The mass sensor is used to send out a warning signal when the mass of the ammonium nitrate powder is lower than a set mass threshold value, so as to prompt the replenishment of the ammonium nitrate powder.

12. A heat dissipation method according to any one of claims 1 to 11, characterized in that: The heat dissipation device comprises a radiator, a storage chamber, a mechanical automatic control component, a first concentration detection component, and a switch valve; the storage chamber is located in the inner cavity of the radiator and is used to store ammonium nitrate powder; a baffle is provided at the bottom of the storage chamber; the heat dissipation method comprises: Using a mechanical automatic control component to control the movement of the baffle to control the timing of adding ammonium nitrate powder into the inner cavity of the radiator, so that the ammonium nitrate powder reacts with water in the inner cavity of the radiator to absorb heat; Using a first concentration detection component to monitor the liquid concentration in the inner cavity of the radiator; When the liquid concentration monitored by the first concentration detection component is lower than the set concentration threshold, the switch valve remains in the on state, and the switch valve is used to control the liquid flowing in the liquid cooling pipe inside the node to flow into the inner cavity of the radiator; When the liquid concentration monitored by the first concentration detection component is higher than or equal to the set concentration threshold, the switch valve remains closed, and the switch valve is used to control the liquid circulating in the liquid cooling pipe inside the node to flow into the node outlet to replace the circulating liquid in the liquid cooling pipe with water.

13. A data center, characterized in that: It comprises a plurality of nodes; each node is equipped with a heat dissipation device as described in any one of claims 1 to 11.

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