Server heat dissipation device, server, and server heat dissipation control method

Abstract

The present invention relates to the field of server heat dissipation, and discloses a server heat dissipation device, a server, and a server heat dissipation control method. The server includes a sealed shell; a plurality of first power devices and a second power device, which are installed in the shell; a phase-change liquid cooling circuit, which is placed in the shell and is used to transmit a phase-change working medium; the phase-change liquid cooling circuit includes a transmission pipeline and a plurality of cold plates, the transmission pipeline is connected to the cold plate, the cold plate is located on one side of the second power device, and the phase-change working medium flows in the cold plate; the transmission pipeline includes an input pipeline and an output pipeline, the input pipeline is connected to the liquid cooling inlet on the shell, and the output pipeline is connected to the liquid cooling outlet on the shell; an oil cooling medium is filled in the shell, and the oil cooling medium is in contact with the first power device, the second power device, and the phase-change liquid cooling circuit. The present invention can solve the compatibility problem between immersion coolant and components, and the problem of low server heat dissipation energy efficiency, while being compatible with conventional refrigerants and reducing the cost of immersion liquid cooling.

Description

Technical Field

[0001] The present invention relates to the field of server heat dissipation, and in particular to a server heat dissipation device, a server, and a server heat dissipation control method. Background Art

[0002] As data center server chip power consumption continues to increase and the demand for system energy efficiency continues to rise, servers are becoming increasingly dependent on cooling technology. Data centers have essentially completed the technological upgrade from air cooling to liquid cooling. While the more advanced immersion liquid cooling technology offers high energy efficiency, it encounters numerous technical challenges during implementation. For example, using fluorinated liquid as an immersion coolant presents compatibility issues with components, as well as high costs and environmental concerns. Using oil as an immersion coolant also presents difficulties with phase transitions, resulting in low energy efficiency. Furthermore, the high viscosity and low specific heat capacity of oils also result in low heat dissipation efficiency.

[0003] In view of this, the present invention is proposed. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a server heat dissipation device, a server and a server heat dissipation control method to solve the compatibility problem between immersion coolant and components and the problem of low server heat dissipation energy efficiency.

[0005] An embodiment of the present invention provides a server, including:

[0006] Sealed housing;

[0007] a plurality of first power devices and second power devices, installed in the housing, wherein the power of the first power devices is less than or equal to a preset power threshold, and the power of the second power devices is greater than the preset power threshold;

[0008] a phase-change liquid cooling circuit disposed within the housing and configured to transmit a phase-change working medium; the phase-change liquid cooling circuit comprising a transmission pipeline and a plurality of cold plates, the transmission pipeline being in communication with the cold plates, the cold plates being located on one side of the second power device; the transmission pipeline comprising an input pipeline and an output pipeline, the input pipeline being in communication with a liquid-cooling inlet on the housing, and the output pipeline being in communication with a liquid-cooling outlet on the housing;

[0009] An oil cooling medium is filled in the housing, and the oil cooling medium is in contact with the first power device, the second power device, and the phase-change liquid cooling circuit.

[0010] Exemplarily, the server is the server unit in the following content.

[0011] An embodiment of the present invention provides a server heat dissipation device, including a liquid cooling system and a condensation circulation system;

[0012] The liquid cooling system includes an oil cooling medium for filling the server shell and a phase-change liquid cooling circuit placed in the shell; the phase-change liquid cooling circuit is used to transmit the phase-change working medium; the phase-change liquid cooling circuit includes a transmission pipeline and a plurality of cold plates, the transmission pipeline and the cold plates are connected; the transmission pipeline includes an input pipeline and an output pipeline, the input pipeline is connected to the liquid cooling inlet on the shell, and the output pipeline is connected to the liquid cooling outlet on the shell;

[0013] The input port of the condensation circulation system is connected to the liquid cooling outlet, and the output port of the condensation circulation system is connected to the liquid cooling inlet. The condensation circulation system is used to condense the phase change working medium flowing out of the server and transport the condensed phase change working medium to the server.

[0014] An embodiment of the present invention provides a server, comprising a plurality of server units and a server heat dissipation device provided by an embodiment of the present invention, wherein the server units and the server heat dissipation device share a liquid cooling system.

[0015] An embodiment of the present invention provides a server heat dissipation control method, which is applied to the server provided in the embodiment of the present invention. The condensation circulation system in the server includes a fan driver, a fan, a first vapor-liquid separator, a condenser, a circulation pump, a pressure gauge, a first valve, and a second valve. The fan driver includes a turbine, a voltage stabilizer, a transformer, and a battery connected in sequence. The method includes:

[0016] opening the first valve and closing the second valve based on the pressure measured by the pressure gauge being greater than or equal to a preset pressure threshold;

[0017] Based on the pressure measured by the pressure gauge being less than the preset pressure threshold, the first valve is closed and the second valve is opened.

[0018] The embodiments of the present invention have the following technical effects:

[0019] An oil-based cooling medium is filled within the server unit's housing, serving as an immersion coolant. Directly contacting low-power components, it exhibits excellent compatibility with these components, enabling efficient immersion and dissipation of low-power components while avoiding corrosion and reactions to components caused by fluorinated liquids. Simultaneously, a phase-change fluid is utilized to dissipate high heat flux from high-power components, achieving efficient heat dissipation. Furthermore, the phase-change fluid, enclosed in a cold plate, can withstand greater phase-change pressure, resolving the issue of conventional housings' low pressure capacity and limited use of low-pressure phase-change fluids. Furthermore, the phase-change fluid and the oil-based cooling medium are isolated and exchanged heat via the cold plate, allowing heat exchange between the phase-change fluid and the oil-based cooling medium. This allows the two to complement each other and achieve efficient heat dissipation for the entire server. Thus, by employing a combined liquid cooling mode of phase-change fluid and oil-based cooling medium, the present invention addresses the compatibility issues of immersion coolant with components and the low heat dissipation efficiency of servers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic diagram of the structure of a server provided by an embodiment of the present invention;

[0022] Figure 2 This is a structural diagram of a server unit provided by an embodiment of the present invention;

[0023] Figure 3 is a structural diagram of another server provided by an embodiment of the present invention;

[0024] Figure 4 This is a flow chart of a server heat dissipation control method provided by an embodiment of the present invention;

[0025] Figure 5 A schematic structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention are described clearly and completely below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0027] Figure 1 This is a schematic diagram of the structure of a server provided by an embodiment of the present invention. Figure 1 The server specifically includes: a plurality of server units 1 (four server units 1 are shown in the figure as an example, and the four server units 1 are connected in parallel to the server heat dissipation device 2) and the server heat dissipation device 2.

[0028] The server heat sink 2 includes a liquid cooling system 21 and a condensing circulation system 22. The liquid cooling system 21 is located inside the server unit 1, while the condensing circulation system 22 is located outside the server unit 1. The server unit 1 can be a separate structure, and the server unit 1 and the server heat sink 2 share the liquid cooling system 21. In this embodiment of the present invention, the server unit 1 can be a blade server.

[0029] For example, Figure 2 The structure of a server unit is shown. The liquid cooling system includes an oil cooling medium filled in the server shell and a phase change liquid cooling circuit placed in the shell. Figure 2As shown, the server unit 1 may include: a sealed shell 11; a plurality of first power devices 12 (such as low-power devices such as memory sticks) and a second power device (not shown in the figure, blocked by the cold plate 213. The second power device may be a high-power device such as a power module and a communication module), installed in the shell 11, the power of the first power device 12 is less than or equal to a preset power threshold, and the power of the second power device is greater than the preset power threshold; wherein the preset power threshold is a power value for measuring high-power devices and low-power devices, and is specifically set according to actual conditions; a phase change liquid cooling circuit, placed in the shell 11, for transmitting phase change working medium; the phase change liquid cooling circuit includes a transmission pipeline and a plurality of cold plates 213, the transmission pipeline is connected to the cold plate 213, and the cold plate 213 is located at the second power device On one side of the component, illustratively, the cold plate 213 is in contact with the second power device; the transmission pipeline includes an input pipeline 211 and an output pipeline 212, the input pipeline 211 is connected to the liquid cooling inlet 111 on the shell 11, and the output pipeline 212 is connected to the liquid cooling outlet 112 on the shell 11; the input pipeline 211 can be divided into multiple paths according to the number of second power devices, each of which can be provided with a cold plate 213, and finally converge on the output pipeline 212, and the output pipeline 212 outputs the phase change working medium after heat exchange to the liquid cooling outlet 112, so that the phase change working medium after heat exchange (gas-liquid two-phase working medium) enters the condensation circulation system 22; the oil cooling medium 214 is filled in the shell 11, and the oil cooling medium 214 is in contact with the first power device 12, the second power device and the phase change liquid cooling circuit.

[0030] In the above embodiment, the housing 11 is designed based on the server motherboard's shape and can be sealed with a sealing ring. In some specialized maintenance-free application scenarios (such as edge computing, exemplified by container environments, tunnel environments, or mobile data centers on vehicles), direct adhesive sealing can be employed. The oil cooling medium 214 is a mineral oil, synthetic oil, or other fluid with good thermal conductivity and compatibility with the motherboard and components. The phase change fluid can be a fluorinated liquid or a conventional refrigerant, such as R134A, R22, R404A, or R1234yf. Conventional refrigerants offer high heat dissipation efficiency and are inexpensive, offering broad market application prospects. The cold plate 213 can be made of copper or aluminum.

[0031] It can be understood that the “several” involved in the embodiments of the present invention refers to one, two, or more than two.

[0032] In some embodiments, a plurality of first columns and second columns are provided inside the cold plate, and both ends of the first columns and the second columns are fixed to the side plates opposite to each other in the thickness direction of the cold plate; the first columns are solid structures, and the second columns are made of porous metal medium. Exemplarily, the first columns are welded inside the cold plate to support and fix the cold plate, so that the cold plate can withstand greater phase change pressure. The second column is made of porous metal medium, which has a large number of tiny pores and a complex internal structure, providing rich surfaces and sites for the vaporization of the phase change medium, greatly increasing the number of vaporization cores. These vaporization cores can trigger the vaporization of the phase change medium at a lower wall superheat, making boiling easier to occur, thereby improving the heat dissipation efficiency. Optionally, the porous metal medium includes foamed copper or foamed aluminum, etc.

[0033] In some embodiments, a finned tube radiator 215 is provided on the transmission pipeline to enhance the natural convection heat dissipation of the oil cooling medium 214 in the shell 11 and the phase change working medium in the phase change liquid cooling circuit.

[0034] In addition, the server unit 1 also includes an electrical connector 2 and a signal transmission connector 3 disposed on the housing 11. The electrical connector 2 is used to supply power to the server unit 1, and the signal transmission connector 3 is used to input and output signals. It will be understood that the server unit 1 includes but is not limited to the above-described structure. The figure only illustrates the main structure involved in the solution of the present invention. The specific structure of the server unit 1 will depend on the actual situation.

[0035] In addition, for the condensation circulation system 22, the input port of the condensation circulation system 22 is connected to the liquid cooling outlet 112, and the output port of the condensation circulation system 22 is connected to the liquid cooling inlet 111. The condensation circulation system 22 is used to condense the phase change working fluid (i.e., gas-liquid two-phase working fluid) flowing out of the server unit 1, and transport the condensed phase change working fluid to the server unit 1, thereby realizing the boiling and condensation cycle of the phase change working fluid.

[0036] This embodiment has the following technical advantages: An oil-based cooling medium is filled within the server unit housing, serving as an immersion coolant. Directly contacting low-power components, it exhibits excellent compatibility with these components, enabling efficient immersion of these components and effectively dissipating heat while avoiding corrosion and reactions to components caused by fluorinated liquids. Simultaneously, a phase-change fluid is utilized to dissipate high heat flux from high-power components, effectively dissipating heat from these components. Furthermore, the phase-change fluid, enclosed in a cold plate, can withstand greater phase-change pressure, resolving the issue of conventional housings with low pressure capacity and limited use of low-pressure phase-change fluids. Furthermore, the phase-change fluid and the oil-based cooling medium are isolated and exchanged heat via the cold plate, allowing heat exchange between the phase-change fluid and the oil-based cooling medium. This allows the phase-change fluid and the oil-based cooling medium to complement each other, achieving efficient heat dissipation for the entire server. Thus, this embodiment of the present invention, through the combined liquid cooling mode of a phase-change fluid and oil-based cooling medium, addresses the issues of immersion coolant compatibility with components and low server heat dissipation efficiency.

[0037] In some embodiments, continue with reference to Figure 1 The condensing circulation system 22 includes a fan driver 221, a fan 222, a first vapor-liquid separator 223, a condenser 224 and a circulation pump 225; the input end of the fan driver 221 is connected to the output pipeline of the liquid cooling system 21, the output end of the fan driver 221 is connected to the liquid inlet port of the first vapor-liquid separator 223, and the driving end of the fan driver 221 is connected to the fan 222; the gas outlet port of the first vapor-liquid separator 223 is connected to the input end of the condenser 224, the liquid outlet port of the first vapor-liquid separator 223 is connected to the output end of the condenser 224; the output end of the condenser 224 is connected to the circulation pump The input end of the circulating pump 225 is connected, and the output end of the circulating pump 225 is connected to the input pipeline of the liquid cooling system 21; when the gas-liquid two-phase working medium flowing out of the output pipeline flows through the fan driver 221, the fan driver 221 uses the gas expansion work in the gas-liquid two-phase working medium to generate a driving force to drive the fan 222 to rotate; the fan 222 is used to enhance the system external machine heat dissipation of the condenser 224; the first gas-liquid separator 223 is used to separate the gas and liquid in the gas-liquid two-phase working medium, and output the separated gas from the gas outlet port, and output the separated liquid from the liquid outlet port; the circulating pump 225 is used to adjust the flow rate of the phase change working medium.

[0038] This embodiment provides a gas expansion work recovery device, namely, a fan driver 221, which utilizes the gas expansion work to drive the fan 222 to rotate, thereby enhancing the condensation effect of the system and further reducing the energy efficiency of the refrigeration system fan.

[0039] Specifically, in one example, fan driver 221 includes a turbine 2211, a voltage regulator 2212, a transformer 2213, and a battery 2214, which are connected in sequence. A gas-liquid two-phase working medium flows through turbine 2211, and battery 2214 is connected to fan 222. The gas-liquid two-phase working medium drives turbine 2211, which converts mechanical energy into electrical energy, which is then output to battery 2214 via voltage regulator 2212 and transformer 2213. Battery 2214 uses the stored electrical energy to drive fan 222.

[0040] Considering that the pressure of the gas-liquid two-phase working medium must be high enough to drive the turbine 2211, two branches can be provided, one passing through the turbine 2211 and the other directly reaching the first vapor-liquid separator 223. By monitoring the pressure of the gas-liquid two-phase working medium, it is determined whether the branch of the turbine 2211 is selected. Specifically, the condensing circulation system 22 also includes a pressure gauge 226, a first valve 31, and a second valve 32. The pressure gauge 226, the first valve 31, and the turbine 2211 are connected in series and then in parallel with the second valve 32. When the pressure measured by the pressure gauge 226 is greater than or equal to the preset pressure threshold, the first valve 31 opens and the second valve 32 closes. At this point, the pressure of the gas-liquid two-phase working medium is high enough, and the gas-liquid two-phase working medium flows through the turbine 2211, driving the turbine 2211, so that the turbine 2211 converts mechanical energy into electrical energy. When the pressure measured by the pressure gauge 226 is lower than a preset pressure threshold, the first valve 31 closes and the second valve 32 opens. At this point, the pressure of the gas-liquid two-phase working medium is too low to drive the turbine 2211. The gas-liquid two-phase working medium flows directly through the second valve 32 to the first vapor-liquid separator 223. Furthermore, the condensing cycle 22 may further include a pressure relief valve 227 to relieve pressure when the pressure of the gas-liquid two-phase working medium is excessive.

[0041] Because the pressure of the gas-liquid two-phase working fluid is low and battery 2214 cannot be charged, the battery 2214's charge continues to decrease, resulting in insufficient charge to drive fan 222 to rotate stably. To address this issue, in some embodiments, fan 222 is also connected to an external power source 100 (e.g., a mains power distribution cabinet). A first switch 33 is provided between fan 222 and external power source 100, and a second switch 34 is provided between fan 222 and battery 2214. When the battery 2214's charge reaches a first preset charge threshold, first switch 33 closes and second switch 34 opens, allowing battery 2214 to drive the fan. When the battery 2214's charge drops to a second preset charge threshold, first switch 33 opens and second switch 34 closes, allowing external power source 100 to drive the fan. This ensures continuous and stable rotation of fan 222. Battery 2214 may include a charge monitoring function. The first preset power threshold is greater than the second preset power threshold. The first preset power threshold is used to indicate that the battery 2214 has sufficient power to drive the fan 222 to rotate stably, and the second preset power threshold is used to indicate that the battery 2214 is insufficient and cannot drive the fan 222 to rotate stably. The first switch 33 and the second switch 34 can both be solenoid valves. It is understandable that when the power level of the battery 2214 is between the first preset power threshold and the second preset power threshold, the battery 2214 can still drive the fan to rotate stably. By setting a discontinuous first preset power threshold and second preset power threshold, the fan can be driven to rotate stably for a longer period of time when the power level of the battery 2214 reaches the first preset power threshold.

[0042] The gas-liquid two-phase working medium passes through turbine 2211 or the second valve and enters first vapor-liquid separator 223. First vapor-liquid separator 223 separates the gas and liquid in the two-phase working medium and then delivers the gas to the input of condenser 224, making the fluid entering condenser 224 almost entirely gaseous, thereby greatly improving the heat transfer efficiency of condenser 224. The gas is condensed in condenser 224 and converted into a low-temperature liquid. Simultaneously, liquid is delivered to the output of condenser 224, where it mixes with the low-temperature liquid and enters circulation pump 225. The circulating pump delivers the mixed liquid to the liquid cooling inlet of server unit 1, where it enters the phase-change liquid cooling circuit within server unit 1.

[0043] The mixed liquid may still contain a small amount of gas. To reduce the cavitation effect on the circulation pump 225 and extend the service life of the circulation pump 225, the condensation circulation system 22 further includes a second vapor-liquid separator 228. The liquid inlet port of the second vapor-liquid separator 228 is connected to the output end of the condenser 224, the gas outlet port of the second vapor-liquid separator 228 is connected to the top of the condenser 224, and the liquid outlet port of the second vapor-liquid separator 228 is connected to the input end of the circulation pump 225. In this way, the second vapor-liquid separator 228 can further separate the gas, which can effectively reduce the entry of bubbles into the blades of the circulation pump 225.

[0044] In some embodiments, the condensing circulation system 22 further includes a thermometer 229, a third valve 35, and a fourth valve 36. The thermometer 229 is disposed between the output pipeline of the liquid cooling system 21 and the condensing circulation system 22 to measure the temperature of the gas-liquid two-phase working medium flowing out of the liquid cooling system 21. The third valve 35 and the circulation pump 225 are connected in series and then in parallel with the fourth valve 36. When the temperature measured by the thermometer 229 is greater than or equal to a preset temperature threshold (indicating that the temperature of the gas-liquid two-phase working medium is too high), and / or the server power is greater than or equal to a preset power threshold (indicating that the server power consumption is high), the third valve 35 opens and the fourth valve 36 closes. At this time, the circulation pump 225 increases the flow rate of the phase-change working medium provided to the server unit 1. When the temperature measured by the thermometer 229 is less than the preset temperature threshold and the server power is less than the preset power threshold, the third valve 35 closes and the fourth valve 36 opens. At this time, the gravity difference inside the phase-change working medium generates a circulation driving force, allowing the phase-change working medium to enter the server unit 1. In this way, the phase-change working fluid is both pump-driven and self-driven, achieving both efficiency and practicality, and achieving optimal energy efficiency. This cycle continues in this manner, effectively dissipating the heat generated by the server unit 1. Furthermore, the condensing circulation system 22 may also include a flow meter 230 for monitoring the flow rate of the phase-change working fluid output by the circulation pump 225, and a pressure gauge 231 for monitoring the pressure of the phase-change working fluid output by the circulation pump 225.

[0045] In another example, Figure 3 Another server structure is shown. Figure 3 The server shown is Figure 1 The difference between the servers shown is that, Figure 3As shown, fan driver 221 includes a rotor connected to fan 222 via bearings. High-pressure gas output by server unit 1 drives the rotor to rotate, which then transfers the mechanical energy of rotation to fan 222 via bearings, driving fan 222 to rotate and thereby enhancing heat dissipation from condenser 224. In this example, energy undergoes only one stage of conversion, resulting in higher efficiency. However, this driving method is not stable and is only suitable for environments with relatively mild environmental conditions (such as low temperatures). It cannot ensure stable rotation of fan 222, which in turn affects the heat dissipation from condenser 224. Therefore, fan 222 is further connected to external power supply 100, with a third switch 37 provided between them. In environments where these mild environmental conditions are not present, the rotor can be disconnected from the fan and third switch 37 can be opened, allowing external power supply 100 to directly drive fan 222 for stable rotation. In environments with mild environmental conditions, the rotor can be connected to the fan via bearings, and third switch 37 can be closed, allowing the rotor to drive fan 222 for rotation. In addition, a fan may be added and connected to the external power supply 100 , so that the external power supply 100 drives the fan to rotate, thereby enhancing the heat dissipation of the condenser 224 .

[0046] In the above two servers (server systems), valves can be provided on the working fluid input pipe and / or working fluid output pipe outside each server unit. By controlling the opening and closing of each valve, the required server unit can be cooled.

[0047] In addition, an embodiment of the present invention also provides a method for controlling heat dissipation of a server. Specifically, Figure 4 This is a flow chart of a server heat dissipation control method provided by an embodiment of the present invention. This server heat dissipation control method is applied to the server provided by an embodiment of the present invention and can be executed by a control device (such as a host computer). The condensation circulation system in the server includes a fan driver, a fan, a first vapor-liquid separator, a condenser, a circulation pump, a pressure gauge, a first valve, and a second valve; the fan driver includes a turbine, a voltage stabilizer, a transformer, and a battery connected in sequence. Figure 4 The server heat dissipation control method specifically includes the following steps:

[0048] S310: Based on the pressure measured by the pressure gauge being greater than or equal to a preset pressure threshold, open the first valve and close the second valve.

[0049] S320: Based on the pressure measured by the pressure gauge being less than a preset pressure threshold, close the first valve and open the second valve.

[0050] Specifically, the pressure of the gas-liquid two-phase working fluid flowing out of the server unit can be measured by a pressure gauge. When the measured pressure is greater than or equal to the preset pressure threshold, it indicates that the pressure of the gas-liquid two-phase working fluid is sufficiently high. At this time, the control device controls the first valve to open and the second valve to close; accordingly, the gas-liquid two-phase working fluid will flow through the turbine and drive the turbine so that the turbine converts mechanical energy into electrical energy. The converted electrical energy is output to the battery after passing through the voltage stabilizer and transformer in sequence. When the pressure measured by the pressure gauge is less than the preset pressure threshold, it indicates that the turbine cannot be driven or cannot be converted into mechanical energy. At this time, the control device controls the first valve to close and the second valve to open; accordingly, the gas-liquid two-phase working fluid will flow directly through the second valve to the first vapor-liquid separator. The first vapor-liquid separator separates the gas and liquid in the gas-liquid two-phase working medium, and inputs the separated gas into the condenser from the gas outlet port, and outputs it after being condensed by the condenser; at the same time, the first vapor-liquid separator outputs the separated liquid from the liquid outlet port to the output end of the condenser, so that the liquid is mixed with the liquid formed by condensation of the condenser, and the mixed liquid is input into the circulation pump.

[0051] In some embodiments, the fan is further connected to an external power source, a first switch is provided between the fan and the external power source, and a second switch is provided between the fan and the battery; the method further comprises:

[0052] When the battery power level rises to a first preset power threshold, the first switch is closed and the second switch is opened; when the battery power level drops to a second preset power threshold, the first switch is opened and the second switch is closed.

[0053] Specifically, the battery continuously stores the electrical energy converted by the turbine using the gas expansion work. When the battery charge reaches a first preset charge threshold, it indicates that the battery has sufficient power to drive the fan in stable rotation. At this time, the control device controls the first switch to close and the second switch to open, and the battery drives the fan. When the battery charge drops to a second preset charge threshold, it indicates that the battery charge is insufficient to drive the fan in stable rotation. At this time, the control device controls the first switch to open and the second switch to close, and the fan is driven by an external power source. In this way, the fan can continue to rotate stably.

[0054] In some embodiments, the condensation cycle system further includes a thermometer, a third valve, and a fourth valve; and the method further includes:

[0055] Based on the temperature measured by the thermometer being greater than or equal to the preset temperature threshold, and / or the server power being greater than or equal to the preset power threshold, the third valve is opened and the fourth valve is closed; based on the temperature measured by the thermometer being less than the preset temperature threshold, and the server power being less than the preset power threshold, the third valve is closed and the fourth valve is opened.

[0056] Specifically, the greater the server power consumption, the more heat it generates, and the correspondingly faster the temperature rise. To maintain the server at normal operating temperature, the flow rate of the phase-change fluid input to the server unit can be regulated by real-time monitoring of the phase-change fluid temperature or server power. For example, when the temperature measured by the thermometer is greater than or equal to a preset temperature threshold, and / or the server power is greater than or equal to a preset power threshold, this indicates that the internal temperature of the server unit is too high and the server unit cannot be lowered to a suitable temperature. At this point, the third valve of the control device opens and the fourth valve closes, and the circulation pump is controlled to increase the flow rate of the phase-change fluid supplied to the server unit, thereby further lowering the server unit temperature. When the temperature measured by the thermometer is less than the preset temperature threshold and the server power is less than the preset power threshold, the server unit temperature is within normal limits, and no adjustment of the phase-change fluid flow rate is required. At this point, the third valve of the control device closes and the fourth valve opens, generating a circulating driving force through the gravity difference within the phase-change fluid, allowing the phase-change fluid to enter the server unit.

[0057] The steps, functions and effects of the server heat dissipation control method provided in the embodiment of the present invention can be referred to the aforementioned server embodiment and will not be repeated here.

[0058] Figure 5 This is a schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. Figure 5 As shown, the electronic device 400 includes one or more processors 401 and a memory 402 .

[0059] The processor 401 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 400 to perform desired functions.

[0060] The memory 402 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory. The non-volatile memory may include, for example, read-only memory (ROM), a hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 401 may execute the program instructions to implement the server heat dissipation control method of any embodiment of the present invention described above and / or other desired functions. Various contents such as initial external parameters and thresholds may also be stored in the computer-readable storage medium.

[0061] In one example, electronic device 400 may further include an input device 403 and an output device 404, which are interconnected via a bus system and / or other connection mechanisms (not shown). Input device 403 may include, for example, a keyboard, a mouse, etc. Output device 404 may output various information to the outside, including warning information, braking force, etc. Output device 404 may include, for example, a display, a speaker, a printer, a communication network, and remote output devices connected thereto.

[0062] Of course, to simplify, Figure 5 Only some of the components related to the present invention in the electronic device 400 are shown, and components such as buses, input / output interfaces, etc. are omitted. In addition, the electronic device 400 may further include any other appropriate components according to specific application scenarios.

[0063] In addition to the above methods and devices, an embodiment of the present invention may also be a computer program product, which includes computer program instructions. When the computer program instructions are executed by a processor, the processor executes the steps of the server heat dissipation control method provided by any embodiment of the present invention.

[0064] The computer program product may be written in any combination of one or more programming languages ​​to implement the operations of embodiments of the present invention, including object-oriented programming languages ​​such as Java, C++, and conventional procedural programming languages ​​such as C or similar programming languages. The program code may be executed entirely on the user's computing device, partially on the user's computing device, as a stand-alone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0065] In addition, an embodiment of the present invention may also be a computer-readable storage medium having computer program instructions stored thereon. When the computer program instructions are executed by a processor, the processor executes the steps of the server heat dissipation control method provided by any embodiment of the present invention.

[0066] The computer-readable storage medium may be any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may include, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0067] It should be noted that the terms used in the present invention are only for describing specific embodiments and are not intended to limit the scope of this application. As shown in the present specification, unless the context clearly indicates an exception, the words "one", "an", "a kind of" and / or "the" do not specifically refer to the singular and may also include the plural. The terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method or device comprising a series of elements includes not only those elements, but also other elements that are not explicitly listed, or also include elements inherent to such process, method or device. In the absence of further restrictions, the elements defined by the sentence "comprise a..." do not exclude the presence of other identical elements in the process, method or device comprising the elements.

[0068] It should also be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A server heat dissipation device, characterized in that: Including liquid cooling system and condensation circulation system; The liquid cooling system includes an oil cooling medium for filling the server shell and a phase-change liquid cooling circuit placed in the shell; the phase-change liquid cooling circuit is used to transmit the phase-change working medium; the phase-change liquid cooling circuit includes a transmission pipeline and a plurality of cold plates, the transmission pipeline and the cold plates are connected; the transmission pipeline includes an input pipeline and an output pipeline, the input pipeline is connected to the liquid cooling inlet on the shell, and the output pipeline is connected to the liquid cooling outlet on the shell; The input port of the condensing circulation system is connected to the liquid cooling outlet, and the output port of the condensing circulation system is connected to the liquid cooling inlet. The condensing circulation system is used to condense the phase-change working medium flowing out of the server and transport the condensed phase-change working medium to the server. The condensing circulation system includes a fan driver, a fan, a first vapor-liquid separator, a condenser and a circulation pump; The input end of the fan driver is connected to the output pipeline of the liquid cooling system, the output end of the fan driver is connected to the liquid inlet port of the first vapor-liquid separator, and the driving end of the fan driver is connected to the fan; the gas outlet port of the first vapor-liquid separator is connected to the input end of the condenser, and the liquid outlet port of the first vapor-liquid separator is connected to the output end of the condenser; the output end of the condenser is connected to the input end of the circulation pump, and the output end of the circulation pump is connected to the input pipeline; When the gas-liquid two-phase working medium flowing out of the output pipeline flows through the fan driver, the fan driver generates a driving force by utilizing the gas expansion work in the gas-liquid two-phase working medium to drive the fan to rotate; The fan is used to enhance the heat dissipation of the condenser outside the system; The first gas-liquid separator is used to separate gas and liquid in the gas-liquid two-phase working medium, and output the separated gas from the gas outlet port, and output the separated liquid from the liquid outlet port; The circulating pump is used to adjust the flow rate of the phase-change working medium.

2. The server heat dissipation device according to claim 1, characterized in that: The fan driver includes a turbine, a voltage stabilizer, a transformer and a battery connected in sequence; the gas-liquid two-phase working medium flows through the turbine, and the battery is connected to the fan.

3. The server heat dissipation device according to claim 2, characterized in that: The condensing circulation system further includes a pressure gauge, a first valve, and a second valve, wherein the pressure gauge, the first valve, and the turbine are connected in series and then in parallel with the second valve; When the pressure measured by the pressure gauge is greater than or equal to a preset pressure threshold, the first valve opens and the second valve closes; when the pressure measured by the pressure gauge is less than the preset pressure threshold, the first valve closes and the second valve opens.

4. The server heat dissipation device according to claim 2, wherein: The fan is also connected to an external power supply, a first switch is provided between the fan and the external power supply, and a second switch is provided between the fan and the battery; When the battery power level rises to a first preset power threshold, the first switch is closed and the second switch is opened; when the battery power level drops to a second preset power threshold, the first switch is opened and the second switch is closed; The first preset power threshold is greater than the second preset power threshold.

5. The server heat dissipation device according to claim 1, wherein: The fan driver includes a rotor connected to the fan via a bearing.

6. The server heat dissipation device according to claim 5, characterized in that: The fan is also connected to an external power supply, and a third switch is provided between the fan and the external power supply.

7. The server heat dissipation device according to claim 1, wherein: The condensation circulation system also includes a second vapor-liquid separator, the liquid inlet port of the second vapor-liquid separator is connected to the output end of the condenser, the gas outlet port of the second vapor-liquid separator is connected to the top of the condenser, and the liquid outlet port of the second vapor-liquid separator is connected to the input end of the circulation pump.

8. The server heat dissipation device according to claim 1, wherein: The condensation circulation system further includes a thermometer, a third valve and a fourth valve; The thermometer is arranged between the output pipeline of the liquid cooling system and the condensation circulation system, and is used to measure the temperature of the gas-liquid two-phase working medium flowing out of the liquid cooling system; The third valve and the circulation pump are connected in series and then in parallel with the fourth valve; When the temperature measured by the thermometer is greater than or equal to a preset temperature threshold, and / or the server power is greater than or equal to a preset power threshold, the third valve opens and the fourth valve closes; when the temperature measured by the thermometer is less than the preset temperature threshold and the server power is less than the preset power threshold, the third valve closes and the fourth valve opens.

9. A server, characterized in that: The invention comprises a plurality of server units and a server heat dissipation device according to any one of claims 1 to 8, wherein the server units and the server heat dissipation device share a liquid cooling system.

10. A server heat dissipation control method, applied to the server according to claim 9, wherein the condensation circulation system in the server comprises a fan driver, a fan, a first vapor-liquid separator, a condenser, a circulation pump, a pressure gauge, a first valve, and a second valve; the fan driver comprises a turbine, a voltage stabilizer, a transformer, and a battery connected in sequence; characterized in that: The method comprises: Based on the pressure measured by the pressure gauge being greater than or equal to a preset pressure threshold, opening the first valve and closing the second valve to control the gas-liquid two-phase working medium to flow through the turbine, so that the turbine converts mechanical energy into electrical energy and stores the electrical energy in the battery to drive the fan to rotate; Based on the pressure measured by the pressure gauge being less than the preset pressure threshold, the first valve is closed and the second valve is opened to control the gas-liquid two-phase working medium to flow to the first gas-liquid separator through the second valve.

11. The server heat dissipation control method according to claim 10, characterized in that: The fan is also connected to an external power supply, a first switch is provided between the fan and the external power supply, and a second switch is provided between the fan and the battery; the method further comprises: When the power level of the battery reaches a first preset power threshold, closing the first switch and opening the second switch to control the battery to drive the fan to rotate; When the power level of the battery drops to a second preset power threshold, the first switch is turned on and the second switch is turned off, so as to control the external power supply to drive the fan to rotate.

12. The server heat dissipation control method according to claim 10, characterized in that: The condensation circulation system further includes a thermometer, a third valve, and a fourth valve; and the method further includes: Based on the temperature measured by the thermometer being greater than or equal to a preset temperature threshold, and / or the server power being greater than or equal to a preset power threshold, opening the third valve and closing the fourth valve to control the circulation pump to increase the flow rate of the phase-change working medium provided to the server unit; Based on the fact that the temperature measured by the thermometer is less than the preset temperature threshold and the server power is less than the preset power threshold, the third valve is closed and the fourth valve is opened to utilize the internal gravity difference of the phase change working fluid to generate a circulation driving force to provide phase change working fluid for the server unit.

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