Two-phase cold plate equipment, server heat dissipation system, control method, control equipment, computer readable storage medium and program product

Abstract

The invention provides two-phase cold plate equipment, a server heat dissipation system, a control method, control equipment, a computer readable storage medium and a program product, and relates to the technical field of server liquid cooling heat dissipation. The cold plate is filled with a first liquid-state phase change working medium and is provided with a cold plate liquid return opening in the bottom end face and a cold plate air outlet in the top; the waste heat recovery condensation chamber is filled with a second liquid phase change working medium, and a gas source gas outlet is formed in the top of the waste heat recovery condensation chamber; the first end of the circulation pipeline is connected with the cold plate air outlet, and the second end penetrates through the waste heat recovery condensation cavity to be connected with the cold plate liquid return opening; and the pneumatic pump is arranged on the circulating pipeline between the waste heat recovery condensation chamber and the cold plate liquid return opening and is connected with the air source air outlet. Waste heat of the cold plate can be recycled, liquid phase change working media flow back into the cold plate through the waste heat, a flow field in the cold plate is disturbed, separation of bubbles on the bottom end face of the cold plate is accelerated, and the heat dissipation efficiency of a server is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of server liquid cooling and heat dissipation, and in particular to a two-phase cold plate device, a server heat dissipation system, a control method, a control device, a computer-readable storage medium and a program product. Background Art

[0002] Liquid cooling technology is mainly divided into single-phase cold plate cooling and two-phase cold plate cooling. Among them, two-phase cold plate cooling mainly relies on the refrigerant to absorb heat during the evaporation process when it encounters heat, that is, the latent heat during the phase change of the refrigerant is used to achieve efficient heat dissipation. Compared with single-phase cold plate cooling, two-phase cold plate cooling does not rely on pumps and coolant distribution units for circulation, but achieves more efficient heat dissipation through temperature control of gas-liquid phase change. Therefore, two-phase cold plate cooling technology has been widely used in large data centers with high power density for efficient heat dissipation.

[0003] Usually, the liquid refrigerant in the two-phase cold plate absorbs the heat generated by the server and vaporizes into a gaseous refrigerant. The heat carried by the gaseous refrigerant needs to be discharged by the cooling equipment, that is, the waste heat of the two-phase cold plate cannot be recycled, which will cause waste heat. At present, patent CN115793819A discloses an immersion liquid cooling server and waste heat recovery. The system and solution convert the heat of the single-phase coolant into kinetic energy to drive the circulation of the coolant, reducing the energy consumption of the system. Although this patent recovers the heat in the coolant, it cannot use the heat to improve the heat dissipation efficiency of the server.

[0004] It can be seen that how to use the recovered two-phase cold plate waste heat to improve the heat dissipation efficiency of the server is a problem that technical personnel in this field need to solve. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a two-phase cold plate device, a server cooling system, a control method, a control device, a computer-readable storage medium and a program product, which can solve the problem of how to use the recovered two-phase cold plate waste heat to improve the cooling efficiency of the server.

[0006] In order to solve the above technical problems, an embodiment of the present invention provides a two-phase cold plate device, comprising:

[0007] A cold plate, the interior of which is filled with a first liquid phase-change medium, for heat exchange with server electronic components in contact with the bottom end surface of the cold plate, and the cold plate is provided with a cold plate liquid return port close to the bottom end surface of the cold plate and a cold plate air outlet located at the top of the cold plate;

[0008] A waste heat recovery condensation chamber, the interior of which is filled with a second liquid phase change medium having a boiling point lower than that of the first liquid phase change medium, and a gas source outlet is provided at the top of the waste heat recovery condensation chamber;

[0009] A circulation pipeline, a first end of which is connected to the cold plate air outlet, and a second end of which passes through the waste heat recovery condensation chamber and is connected to the cold plate liquid return port;

[0010] The pneumatic pump is arranged on the circulation pipeline between the waste heat recovery condensation chamber and the cold plate liquid return port, and is connected to the air source outlet.

[0011] On the other hand, it also includes a condensation heat exchange chamber, the top of the condensation heat exchange chamber is connected to the gas source outlet of the waste heat recovery condensation chamber through an air inlet pipe, the bottom of the condensation heat exchange chamber is connected to the condensate return port of the waste heat recovery condensation chamber through a liquid return pipe, and a condensation pipe is provided inside the condensation heat exchange chamber for heat exchange with the vaporized second liquid phase change working medium discharged from the gas source outlet.

[0012] On the other hand, an impeller is disposed inside the air inlet pipe, and the impeller is connected to the pneumatic pump via a driving shaft.

[0013] On the other hand, the circulation pipeline includes a main pipeline and at least one branch pipeline. The main pipeline runs through the waste heat recovery condensation chamber and is connected between the cold plate air outlet and the liquid inlet end of the pneumatic pump. The liquid outlet end of the pneumatic pump is correspondingly connected to at least one cold plate liquid return port through at least one branch pipeline.

[0014] On the other hand, the liquid outlet end of the pneumatic pump is connected to the first ends of the two branch pipes, and the second ends of the two branch pipes are correspondingly connected to the two cold plate return liquid ports located on the opposite sides of the cold plate. The pneumatic pump is a pneumatic diaphragm pump, which is used to periodically agitate and control the alternating liquid flow of the two branch pipes.

[0015] On the other hand, it also includes a control device, the liquid return pipe is provided with a first solenoid valve electrically connected to the control device, and the air intake pipe is provided with a second solenoid valve electrically connected to the control device.

[0016] On the other hand, a first pressure sensor electrically connected to the control device is provided at the inner top of the cold plate for measuring the inner pressure of the cold plate in real time.

[0017] On the other hand, a second pressure sensor electrically connected to the control device is provided at the inner top of the condensation heat exchange chamber for measuring the internal pressure of the condensation heat exchange chamber in real time.

[0018] On the other hand, a liquid level sensor electrically connected to the control device is provided inside the condensation heat exchange chamber.

[0019] A server cooling system comprises a server and at least one of the two-phase cold plate devices described above.

[0020] A two-phase cold plate device control method, applied to any of the two-phase cold plate devices described above, comprising:

[0021] Obtaining the temperature of the electronic components of the server;

[0022] Comparing the temperature of the electronic component of the server with a first temperature threshold;

[0023] If the temperature of the electronic component of the server is greater than the first temperature threshold, increasing the valve opening of the first solenoid valve and / or the valve opening of the second solenoid valve;

[0024] If the temperature of the electronic component of the server is less than or equal to the first temperature threshold, the valve openings of the first solenoid valve and the second solenoid valve are controlled to be at the set valve openings.

[0025] On the other hand, if the temperature of the electronic component of the server is greater than the first temperature threshold, increasing the valve opening of the first solenoid valve and / or the valve opening of the second solenoid valve includes:

[0026] Comparing the temperature of the electronic component of the server with a second temperature threshold;

[0027] If the temperature of the electronic component of the server is less than or equal to the second temperature threshold, increasing the valve opening of the second solenoid valve;

[0028] If the temperature of the electronic component of the server is greater than the second temperature threshold, the valve opening of the first solenoid valve and the valve opening of the second solenoid valve are increased.

[0029] On the other hand, a liquid level sensor electrically connected to the control device is provided inside the condensation heat exchange chamber for monitoring the liquid level height of the second liquid phase change medium; the two-phase cold plate equipment control method also includes:

[0030] Obtaining the liquid level height of the second liquid phase-change working fluid;

[0031] If the liquid level of the second liquid phase-change working medium reaches a preset height, the alarm device is controlled not to give an alarm;

[0032] If the liquid level of the second liquid phase-change working medium does not reach a preset height, the control alarm device will sound an alarm to remind the user to replenish the second liquid phase-change working medium.

[0033] On the other hand, a first pressure sensor electrically connected to the control device is provided at the inner top of the cold plate for measuring the internal pressure of the cold plate in real time; the two-phase cold plate equipment control method also includes:

[0034] Obtaining the internal pressure of the cold plate;

[0035] If the internal pressure of the cold plate is within a first pressure threshold range, maintaining the valve openings of the first solenoid valve and the second solenoid valve;

[0036] If the internal pressure of the cold plate is greater than the first maximum pressure threshold, increasing the valve opening of the first solenoid valve;

[0037] If the internal pressure of the cold plate is lower than the first minimum pressure threshold, the valve opening of the first solenoid valve is reduced.

[0038] On the other hand, a second pressure sensor electrically connected to the control device is provided at the top of the inner part of the condensation heat exchange chamber for measuring the internal pressure of the condensation heat exchange chamber in real time, and the condensation pipe is connected to the coolant supply device to form a coolant circulation and delivery loop, and the coolant circulation and delivery loop is provided with a third solenoid valve; the two-phase cold plate equipment control method also includes:

[0039] Obtaining the internal pressure of the condensation heat exchange chamber;

[0040] If the internal pressure of the condensing heat exchange chamber is within the second pressure threshold range, maintaining the valve opening of the third solenoid valve;

[0041] If the internal pressure of the condensing heat exchange chamber is greater than the second maximum pressure threshold, increasing the valve opening of the third solenoid valve;

[0042] If the internal pressure of the condensing heat exchange chamber is lower than the second minimum pressure threshold, the valve opening of the third solenoid valve is reduced.

[0043] On the other hand, if the internal pressure of the condensing heat exchange chamber is within the second pressure threshold range, the method further includes:

[0044] Comparing the temperature of the electronic component of the server with a third temperature threshold;

[0045] If the temperature of the electronic component of the server is greater than the second temperature threshold and less than or equal to the third temperature threshold, increasing the valve opening of the first solenoid valve and the valve opening of the second solenoid valve;

[0046] If the temperature of the electronic component of the server is greater than the third temperature threshold, the valve opening of the first solenoid valve, the valve opening of the second solenoid valve, and the valve opening of the third solenoid valve are increased.

[0047] A control device, comprising:

[0048] Memory for storing computer programs;

[0049] A processor is used to execute the computer program to implement the steps of the two-phase cold plate device control method as described in any one of the above items.

[0050] A computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of any of the above-mentioned two-phase cold plate device control methods.

[0051] A computer program product comprises a computer program / instruction, which, when executed by a processor, implements the steps of any one of the above-mentioned two-phase cold plate device control methods.

[0052] It can be seen from the above technical scheme that the low-temperature and low-pressure first liquid phase change working fluid in the cold plate absorbs the heat of the electronic components of the server and then vaporizes into the high-temperature and high-pressure first gaseous phase change working fluid. The first gaseous phase change working fluid enters the waste heat recovery condensation chamber, that is, the waste heat generated by the cold plate is discharged into the waste heat recovery condensation chamber. After the second liquid phase change working fluid in the waste heat recovery condensation chamber absorbs the heat of the first gaseous phase change working fluid, the first gaseous phase change working fluid is liquefied into the low-temperature and low-pressure first liquid phase change working fluid. The second liquid phase change working fluid is vaporized into the high-temperature and high-pressure second gaseous phase change working fluid and passed into the pneumatic pump to serve as the power source of the pneumatic pump, driving the pneumatic pump to return the low-temperature and low-pressure first liquid phase change working fluid to the inner bottom end of the cold plate, which can disturb the flow field on the bottom end surface of the cold plate to accelerate the detachment of bubbles on the bottom end surface of the cold plate to take away more heat from the electronic components of the server, thereby enhancing the heat exchange effect between the two-phase cold plate and the server, and thus improving the heat dissipation efficiency of the server.

[0053] In summary, the present invention has the following beneficial effects:

[0054] (1) The first liquid phase change working fluid is used to absorb the heat of the server electronic components and vaporize into a high-temperature gas phase change working fluid, and then the second liquid phase change working fluid is used to absorb the heat of the high-temperature gas phase change working fluid to recover the heat of the server electronic components absorbed by the cold plate, thereby realizing the recovery of the waste heat of the cold plate.

[0055] (2) The waste heat of the recovered cold plate is used to vaporize the second liquid phase change working fluid into a high-pressure gas phase change working fluid as the power source of the pneumatic pump, so as to realize the conversion of waste heat into mechanical energy to drive the pneumatic pump to work, thus realizing the utilization of waste heat.

[0056] (3) The first liquid phase change medium is sprayed back to the inner bottom of the cold plate by a pneumatic pump to accelerate the detachment of bubbles on the bottom surface of the cold plate, thereby improving the heat dissipation efficiency of the server.

[0057] In summary, the present invention can recycle the waste heat of the cold plate and use the waste heat to realize the reflux of liquid phase change medium into the cold plate, disturb the internal flow field of the cold plate, accelerate the detachment of bubbles on the bottom end surface of the cold plate, and improve the heat dissipation efficiency of the server. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] 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.

[0059] Figure 1 A schematic structural diagram of a two-phase cold plate device provided by the present invention;

[0060] Figure 2 A schematic diagram of the structure of a server heat dissipation system provided by the present invention;

[0061] Figure 3 A control flow chart of a two-phase cold plate device provided by the present invention for controlling the temperature of electronic components of a server to maintain it within a reasonable temperature range;

[0062] Figure 4 It is a specific control flow chart of step S13 in the above flow chart;

[0063] Figure 5 A control flow chart of a two-phase cold plate device for controlling liquid replenishment in a condensation heat exchange chamber provided by the present invention;

[0064] Figure 6 A control flow chart of a two-phase cold plate device provided by the present invention for controlling the internal pressure of a cold plate to maintain within a reasonable pressure range;

[0065] Figure 7 A control flow chart of a two-phase cold plate device provided by the present invention for controlling a condensation heat exchange chamber and a waste heat recovery condensation chamber connected thereto to maintain a pressure within a reasonable range;

[0066] Figure 8 This is a structural diagram of a control device provided by the present invention.

[0067] Figure 1-Figure 2 , the reference numerals include:

[0068] 1-Server electronic components;

[0069] 2-cold plate; 21-cold plate liquid return port; 22-cold plate air outlet; 23-first pressure sensor;

[0070] 3-waste heat recovery condensation chamber; 31-gas source outlet; 32-condensate return port;

[0071] 4- condensation heat exchange chamber; 41- condensation pipe; 42- second pressure sensor; 43- liquid level sensor;

[0072] 5-circulation pipeline; 51-main pipeline; 52-branch pipeline;

[0073] 6-pneumatic pump; 61-diaphragm;

[0074] 7-Impeller;

[0075] 8- driving shaft;

[0076] 9-liquid return pipe; 91-first solenoid valve;

[0077] 10-intake pipe; 101-second solenoid valve;

[0078] 11- Server;

[0079] 12-first liquid phase-change working fluid; 13-second liquid phase-change working fluid;

[0080] 14-chip; 15-motherboard.

[0081] Figure 8 , the reference numerals include:

[0082] 01- memory; 02- processor; 03- display screen; 04- input and output interface; 05- communication interface; 06- power supply; 07- communication bus; 011- computer program; 012- operating system; 013- data. DETAILED DESCRIPTION

[0083] 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.

[0084] The terms "including" and "having" in the specification of the present invention and the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0085] 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.

[0086] Next, a two-phase cold plate device provided by an embodiment of the present invention is described in detail. Figure 1 A two-phase cold plate device is provided in an embodiment of the present invention. The two-phase cold plate device includes a cold plate 2, a waste heat recovery condensation chamber 3, a circulation pipeline 5 and a pneumatic pump 6.

[0087] The interior of the cold plate 2 is filled with a first liquid phase change medium 12 for heat exchange with the server electronic components 1 in contact with the bottom end surface of the cold plate 2 , and the cold plate 2 is provided with a cold plate liquid return port 21 close to the bottom end surface of the cold plate 2 and a cold plate air outlet 22 located at the top of the cold plate 2 .

[0088] The waste heat recovery condensation chamber 3 is filled with a second liquid phase change medium 13 having a boiling point lower than that of the first liquid phase change medium 12 , and a gas source outlet 31 is provided at the top of the waste heat recovery condensation chamber 3 .

[0089] The first end of the circulation pipeline 5 is connected to the cold plate air outlet 22 , and the second end passes through the waste heat recovery condensation chamber 3 and is connected to the cold plate liquid return port 21 .

[0090] The pneumatic pump 6 is disposed on the circulation pipeline 5 between the waste heat recovery condensation chamber 3 and the cold plate liquid return port 21 , and is connected to the air source outlet 31 .

[0091] It should be noted that the cold plate 2 of the present invention is a two-phase cold plate 2, which is filled with a first liquid phase change medium 12. The first liquid phase change medium 12 contacts the heat-generating server electronic components 1 for heat exchange and vaporization, and absorbs heat during the vaporization process to achieve efficient heat dissipation of the server electronic components 1. The interior of the waste heat recovery condensation chamber 3 is filled with a second liquid phase change medium 13, and the boiling point of the second liquid phase change medium 13 is lower than the boiling point of the first liquid phase change medium 12. Therefore, the high-boiling-point first liquid phase change medium 12 can be used to absorb the heat of the server electronic components 1 and then vaporize into a high-temperature and high-pressure first gaseous phase change medium, that is, the vaporized first liquid phase change medium 12, and then the low-boiling-point second liquid phase change medium 13 is used to absorb the heat of the first gaseous phase change medium to recover the waste heat carried by the first gaseous phase change medium, that is, to achieve waste heat recovery of the cold plate 2.

[0092] The pneumatic pump 6 is arranged on the circulation pipeline 5 between the waste heat recovery condensation chamber 3 and the cold plate liquid return port 21, and the air inlet end of the pneumatic pump 6 is connected to the air source outlet 31 of the waste heat recovery condensation chamber 3. Thus, the second liquid phase change working medium 13 in the waste heat recovery condensation chamber 3 absorbs the heat of the first gaseous phase change working medium and vaporizes into a high-temperature and high-pressure second gaseous phase change working medium, i.e., the vaporized second liquid phase change working medium 13, and then is introduced into the pneumatic pump 6 as a power source, which can drive the pneumatic pump 6 to work, so as to pump the first liquid phase change working medium 12 formed by heat exchange between the first gaseous phase change working medium and the second liquid phase change working medium 13 to the inside of the cold plate 2.

[0093] The bottom end surface of the cold plate 2 is in contact with the server electronic components 1 for heat exchange, and bubbles will first be generated on the bottom end surface of the cold plate 2. The cold plate liquid return port 21 is arranged close to the bottom end surface of the cold plate 2. The first liquid phase change medium 12 flows back to the inner bottom end of the cold plate 2, which can disturb the flow field of the bottom end surface of the cold plate 2 to accelerate the detachment of the bubbles on the bottom end surface of the cold plate 2 and take away more heat from the server electronic components 1, thereby enhancing the heat exchange effect between the two-phase cold plate 2 and the server 11, and further improving the heat dissipation efficiency of the server 11.

[0094] In summary, the present invention has the following beneficial effects: first, the first liquid phase change working fluid 12 is used to absorb the heat of the server electronic components 1 and vaporize it into a high-temperature gaseous phase change working fluid, and then the second liquid phase change working fluid 13 is used to absorb the heat of the high-temperature gaseous phase change working fluid to recover the heat of the server electronic components 1 absorbed by the cold plate 2, thereby realizing the recovery of the waste heat of the cold plate 2; second, the second liquid phase change working fluid 13 is vaporized into a high-pressure gaseous phase change working fluid using the recovered waste heat of the cold plate 2 as a power source for the pneumatic pump 6, thereby realizing the conversion of waste heat into mechanical energy to drive the pneumatic pump 6 to work, thereby realizing the utilization of waste heat; third, the pneumatic pump 6 is used to spray the first liquid phase change working fluid 12 back to the inner bottom end of the cold plate 2 to accelerate the detachment of bubbles on the bottom end surface of the cold plate 2, thereby improving the heat dissipation efficiency of the server 11.

[0095] In summary, the present invention can recover the waste heat of the cold plate 2 and use the waste heat to realize the reflux of liquid phase change medium into the cold plate 2, disturb the internal flow field of the cold plate 2, accelerate the detachment of bubbles on the bottom end surface of the cold plate 2, and improve the heat dissipation efficiency of the server 11.

[0096] It can be understood that after the second liquid phase change working fluid 13 in the waste heat recovery condensation chamber 3 absorbs the waste heat of the first gaseous phase change working fluid discharged from the cold plate 2, it will vaporize to form a second gaseous phase change working fluid and be discharged through the gas source outlet 31, thereby consuming the second liquid phase change working fluid 13. It is necessary to continuously replenish the second liquid phase change working fluid 13 into the waste heat recovery condensation chamber 3 to continuously realize the liquefaction of the first gaseous phase change working fluid discharged from the cold plate 2 to form the first liquid phase change working fluid 12 which flows back to the cold plate 2 to continue to exchange heat with the server electronic components 1, even if the cold plate 2 continues to perform heat dissipation operations.

[0097] In order to realize the continuous heat dissipation operation of the two-phase cold plate equipment of the present invention, on the basis of the above embodiments, the present invention also includes a condensation heat exchange chamber 4, the top of the condensation heat exchange chamber 4 is connected to the gas source outlet 31 of the waste heat recovery condensation chamber 3 through the air inlet pipe 10, and the bottom of the condensation heat exchange chamber 4 is connected to the condensate return port 32 of the waste heat recovery condensation chamber 3 through the return liquid pipe 9. A condensation pipe 41 is provided inside the condensation heat exchange chamber 4 for exchanging heat with the vaporized second liquid phase change working medium 13 discharged from the gas source outlet 31.

[0098] Specifically, the interior of the condensation heat exchange chamber 4 is filled with a second liquid phase change working medium 13, and the second liquid phase change working medium 13 can flow to the condensate return port 32 of the waste heat recovery condensation chamber 3 through the return liquid pipe 9, and then flow into the interior of the waste heat recovery condensation chamber 3 through the condensate return port 32 of the waste heat recovery condensation chamber 3. After the second liquid phase change working medium 13 in the waste heat recovery condensation chamber 3 exchanges heat with the first gaseous phase change working medium in the circulation pipeline 5 and vaporizes into the second gaseous phase change working medium, it can flow into the top of the condensation heat exchange chamber 4 through the air inlet pipe 10, exchange heat with the condensation pipe 41, and liquefy into the second liquid phase change working medium 13, and then fall back into the second liquid phase change working medium 13 in the condensation heat exchange chamber 4.

[0099] It can be seen from this that for the second liquid phase change working fluid 13, the condensation heat exchange chamber 4 is equivalent to the condensation end, the waste heat recovery condensation chamber 3 is equivalent to the evaporation end, and the air inlet pipe 10 and the liquid return pipe 9 are connected between the condensation end and the evaporation end to form a working fluid circulation loop, which can make the second liquid and gaseous phase change working fluid circulate between the condensation heat exchange chamber 4 and the waste heat recovery condensation chamber 3, thereby continuously providing the second liquid phase change working fluid 13 to the waste heat recovery condensation chamber 3, and then continuously providing cooling to the circulation pipeline 5. For the first liquid phase change working medium 12, the cold plate 2 is equivalent to the evaporation end, and the circulation pipeline 5 located in the waste heat recovery condensation chamber 3 is equivalent to the condensation end. If the condensation end continuously provides cooling, the first liquid and gas phase change working medium can circulate between the cold plate 2 and the circulation pipeline 5, thereby ensuring uninterrupted liquid return to the bottom of the cold plate 2, which not only ensures that the cold plate 2 can continuously provide cooling to the server electronic components 1, but also continuously disturbs the internal flow field of the cold plate 2, thereby realizing the two-phase cold plate equipment of the present invention to continuously perform efficient heat dissipation operations.

[0100] It should be noted that the condenser 41 contains a coolant, which can be cooling water or ethylene glycol, and the condenser 41 is generally connected to a coolant supply device for supplying coolant to the condenser 41. The liquid inlet of the condenser 41 is connected to the liquid outlet of the coolant supply device, and the liquid outlet of the condenser 41 is connected to the liquid inlet of the coolant supply device to form a coolant circulation and delivery loop, so as to realize the circulation of liquid supply to the condenser 41 and ensure that the condenser 41 can continuously provide cooling capacity. Since the coolant supply device, the condenser 41 and the connection structure between the two are not the focus of protection of the present invention, reference can be made to the prior art and no detailed description is given herein.

[0101] In order to fully utilize the heat of the server electronic components 1 carried by the first gaseous phase change medium discharged from the cold plate 2, that is, to fully utilize the waste heat of the cold plate 2, on the basis of the above embodiment, an impeller 7 is provided inside the air intake pipe 10, and the impeller 7 is connected to the pneumatic pump 6 through the drive shaft 8.

[0102] The pneumatic pump 6 adopts a pneumatic diaphragm pump, which is based on compressed air driving the diaphragm 61 to make reciprocating motion in the pump body, thereby achieving the suction and discharge of liquid. Therefore, in this embodiment, the first end of the driving shaft 8 is connected to the impeller 7, and the second end is connected to the diaphragm 61 of the pneumatic pump 6. By driving the impeller 7 to rotate, the driving shaft 8 can drive the diaphragm 61 to reciprocate in the pump body, thereby periodically changing the volume change of the diaphragm 61 cavity to achieve pumping liquid.

[0103] In addition, the impeller 7 is placed inside the air inlet pipe 10, and the impeller 7 is located between the gas source outlet 31 of the waste heat recovery condensation chamber 3 and the air inlet of the condensation heat exchange chamber 4. The second liquid phase change working medium in the waste heat recovery condensation chamber 3 exchanges heat with the first gaseous phase change working medium discharged from the cold plate 2, that is, the second gaseous phase change working medium vaporized after recovering the waste heat of the cold plate 2 all flows into the air inlet pipe 10 through the gas source outlet 31, and then flows through the impeller 7 in the air inlet pipe 10, driving the impeller 7 to rotate to efficiently drive the pneumatic pump 6 to work, and finally flows into the condensation heat exchange chamber 4 and liquefies after heat exchange with the condensation tube 41 and falls back into the condensation heat exchange chamber 4.

[0104] Therefore, connecting the pneumatic pump 6 and the air source outlet 31 in the above manner has the following beneficial effects: first, the air inlet end of the pneumatic pump 6, i.e., the impeller 7, and the condensation heat exchange chamber 4 share the same air inlet pipe 10 for air intake, which is beneficial to simplify the pipeline layout; second, the second gaseous phase change working fluid formed by the vaporization of the waste heat of the cold plate 2 is all used to drive the impeller 7 to rotate, so as to fully convert the waste heat of the cold plate 2 into mechanical energy, which not only makes full use of the waste heat of the cold plate 2, but also further reduces the waste heat waste, and is also beneficial to improve the infusion efficiency of the pneumatic pump 6, and further enhances the heat exchange effect between the cold plate 2 and the server electronic components 1.

[0105] In some embodiments, the circulation pipeline 5 includes a main pipeline 51 and at least one branch pipeline 52, the main pipeline 51 runs through the waste heat recovery condensation chamber 3 and is connected between the cold plate gas outlet 22 and the liquid inlet end of the pneumatic pump 6, and the liquid outlet end of the pneumatic pump 6 is correspondingly connected to a plurality of cold plate liquid return ports 21 through at least one branch pipeline 52. Among them, the number of branch pipelines 52 is consistent with the number of cold plate liquid return ports 21, and the numbers of the two are not unique. Each cold plate liquid return port 21 is connected to the liquid outlet end of the pneumatic pump 6 through the corresponding liquid branch pipe, so that the first liquid phase change working medium 12 can flow back into the cold plate 2 through the cold plate liquid return port 21.

[0106] It can be understood that the number of cold plate liquid return ports 21 is closely related to the degree of flow field disturbance at the bottom end surface of the cold plate 2. To a certain extent, the more cold plate liquid return ports 21 are set, the greater the degree of flow field disturbance at the bottom end surface of the cold plate 2, and the faster the bubble detachment speed at the bottom end surface of the cold plate 2, thereby the higher the heat dissipation efficiency of the server 11.

[0107] Furthermore, in one embodiment, the liquid outlet end of the pneumatic pump 6 is connected to the first ends of the two branch pipes 52, and the second ends of the two branch pipes 52 are correspondingly connected to the two cold plate return liquid ports 21 disposed on the opposite sides of the cold plate 2. The pneumatic pump 6 is a pneumatic diaphragm pump, which is used to periodically agitate and control the alternating liquid flow of the two branch pipes 52.

[0108] Specifically, two cold plate return ports 21 are provided, and correspondingly, two branch pipelines 52 are provided, and the two branch pipelines 52 are both connected to the liquid outlet of the pneumatic pump 6. The pneumatic pump 6 has the function of periodically agitating and controlling the two branch pipelines 52 to alternately pass liquid. Therefore, the pneumatic pump 6 can adopt the existing pneumatic pump 6 structure with two diaphragm 61 cavities. The two diaphragms 61 divide the inner cavity of the pneumatic pump 6 into two diaphragm 61 cavities. The two diaphragm 61 cavities are connected to the first ends of the two branch pipelines 52 in a one-to-one correspondence, and the two diaphragms 61 are both connected to the drive shaft 8. In this way, the rotation of the drive shaft 8 can make the two diaphragms 61 periodically alternately swell or contract, and realize the alternating liquid passing of the two diaphragm 61 cavities, thereby realizing the pneumatic pump 6 periodically agitating and controlling the alternating liquid passing of the two branch pipelines 52. It should be noted that the specific structure of the pneumatic pump 6 can refer to the existing technology, which is not the focus of protection of the present invention and will not be described in detail herein.

[0109] In addition, two cold plate liquid return ports 21 are arranged on opposite sides of the cold plate 2, and the second ends of the two branch pipes 52 are connected to the two opposite cold plate liquid return ports 21 in a one-to-one correspondence. In this way, the high pressure generated by the vaporized second liquid phase change medium drives the pneumatic pump 6 to work, and the first liquid phase change medium 12 formed after condensation in the waste heat recovery condensation chamber 3 is alternately pumped into the cold plate 2 from two opposite directions, even if the first liquid phase change medium 12 is sprayed back in a cross-opposite direction, so that a periodic reciprocating flow is formed in the cold plate 2, it can avoid the dead water area on the bottom end surface of the cold plate 2, thereby ensuring that all the bubbles generated on the bottom end surface of the cold plate 2 are accelerated to detach, thereby improving the uniformity and efficiency of heat dissipation of the server electronic components 1.

[0110] In order to accurately control the temperature of the server electronic components 1 and maintain it within a reasonable temperature range, based on the above embodiment, the present invention also includes a control device, the return liquid pipe 9 is provided with a first solenoid valve 91 electrically connected to the control device, and the air intake pipe 10 is provided with a second solenoid valve 101 electrically connected to the control device.

[0111] The server electronic components 1 are such as the motherboard 15 chip 14 which generates more heat, and the server electronic components 1 generally have a temperature detector electrically connected to the control device, which is used to measure the temperature of the server electronic components 1 in real time and transmit it to the control device. The method by which the control device specifically controls the temperature of the server electronic components 1 is, in the first step, obtaining the temperature of the server electronic components 1; in the second step, comparing the temperature of the server electronic components 1 with the first temperature threshold; in the third step, if the temperature of the server electronic components 1 is greater than the first temperature threshold, it means that the temperature of the server electronic components 1 has risen at this time. If the valve opening of the first solenoid valve 91 is increased, the flow rate of the second liquid phase change working fluid 13 delivered from the condensation heat exchange chamber 4 to the waste heat recovery condensation chamber 3 can be increased to absorb more heat from the first gaseous phase change working fluid, thereby increasing the condensation amount of the first gaseous phase change working fluid, and then increasing the amount of the first liquid phase change working fluid 12 refluxed from the cold plate 2, thereby reducing the temperature of the server electronic components 1. If the second solenoid valve 101 is increased, The valve opening can increase the flow rate of the second gaseous phase change working fluid output from the waste heat recovery condensation chamber 3, so as to improve the efficiency of the pneumatic pump 6 in pumping the first liquid phase change working fluid 12 back to the cold plate 2, thereby increasing the bubble detachment speed at the bottom end surface of the cold plate 2, and further reducing the temperature of the server electronic components 1. It can be seen that according to the degree of temperature increase of the server electronic components 1, the first solenoid valve 91 and / or the second solenoid valve 101 are selectively increased to maintain the temperature of the server electronic components 1 within a reasonable temperature range; if the temperature of the server electronic components 1 is less than or equal to the first temperature threshold, it means that the temperature of the server electronic components 1 is within a reasonable temperature range at this time, and the valve openings of the first solenoid valve 91 and the second solenoid valve 101 need to be controlled to be at the valve set openings.

[0112] Preferably, the first solenoid valve 91 is provided with a first alarm electrically connected to the control device, which is used to monitor the opening state of the first solenoid valve 91 and transmit it to the control device, and the second solenoid valve 101 is provided with a second alarm electrically connected to the control device, which is used to monitor the opening state of the second solenoid valve 101 and transmit it to the control device. In this way, the control device sends an action command to the first solenoid valve 91. If the first solenoid valve 91 does not act, the first alarm is controlled to send an alarm signal to remind the staff that the remote control of the first solenoid valve fails and needs manual adjustment. Therefore, the first alarm can avoid the situation where the first solenoid valve 91 cannot be controlled when it is damaged by temperature. Similarly, the second alarm can also avoid the situation where the second solenoid valve 101 cannot be controlled when it is damaged by temperature, thereby ensuring that the temperature of the server electronic components 1 is maintained within a reasonable temperature range.

[0113] It is understandable that excessive internal pressure of the cold plate 2 not only easily causes leakage or explosion of the cold plate 2, making it impossible to ensure safe heat dissipation of the equipment, but also causes the boiling point of the first liquid phase change medium 12 to increase, affecting the heat dissipation of the server electronic components 1 and increasing the temperature of the server electronic components 1.

[0114] In order to accurately control the internal pressure of the cold plate 2 to maintain it within a reasonable pressure range, based on the above embodiment, a first pressure sensor 23 electrically connected to the control device is provided at the top of the cold plate 2 to measure the internal pressure of the cold plate 2 in real time and transmit it to the control device.

[0115] The method for the control device to specifically control the internal pressure of the cold plate 2 is as follows: first, obtain the internal pressure of the cold plate 2; second, determine whether the internal pressure of the cold plate 2 is within the first pressure threshold range; third, if the internal pressure of the cold plate 2 is within the first pressure threshold range, it means that the internal pressure of the cold plate 2 is within a reasonable pressure range at this time, and the first solenoid valve 91 and the second solenoid valve 101 are not operated; fourth, if the internal pressure of the cold plate 2 is not within the first pressure threshold range, it is necessary to further determine whether the internal pressure of the cold plate 2 is too low or too high, that is, to compare the internal pressure of the cold plate 2 with the first minimum pressure threshold and the first maximum pressure threshold; fifth, if the internal pressure of the cold plate 2 is greater than the first maximum pressure threshold, it means that the cold plate 2 is 2, if the internal pressure of the cold plate 2 is too high, the valve opening of the first solenoid valve 91 is increased to increase the flow rate of the second liquid phase-change working medium 13 transported from the condensation heat exchange chamber 4 to the waste heat recovery condensation chamber 3, thereby absorbing more heat of the first gaseous phase-change working medium at the top of the cold plate 2, thereby increasing the condensation amount of the first gaseous phase-change working medium at the top of the cold plate 2, and the gas pressure of the cold plate 2 decreases; Step 6, if the internal pressure of the cold plate 2 is less than the first minimum pressure threshold, it means that the internal pressure of the cold plate 2 is too low at this time, then the valve opening of the first solenoid valve 91 is reduced to reduce the flow rate of the second liquid phase-change working medium 13 transported from the condensation heat exchange chamber 4 to the waste heat recovery condensation chamber 3, which can reduce the condensation amount of the first gaseous phase-change working medium at the top of the cold plate 2, and the gas pressure of the cold plate 2 increases.

[0116] It is understandable that the condensation heat exchange chamber 4 is connected to the waste heat recovery condensation chamber 3, and the gas pressure inside the two is consistent. If the gas pressure inside the waste heat recovery condensation chamber 3 and the condensation heat exchange chamber 4 is too high, that is, there is too much second gaseous phase change working fluid inside the two, it means that the second liquid phase change working fluid 13 absorbs too much heat of the first gaseous phase change working fluid, and the condensation amount of the first gaseous phase change working fluid is high. At this time, the temperature of the server electronic components 1 is likely to be too low. If the gas pressure inside the waste heat recovery condensation chamber 3 and the condensation heat exchange chamber 4 is too low, on the contrary, the temperature of the server electronic components 1 is likely to be too high. Therefore, controlling the internal pressure of the condensation heat exchange chamber 4 and the waste heat recovery condensation chamber 3 to be maintained within a reasonable pressure range can further ensure that the temperature of the server electronic components 1 is maintained within a reasonable temperature range.

[0117] In order to accurately control the internal pressure of the condensation heat exchange chamber 4 and the waste heat recovery condensation chamber 3 to maintain it within a reasonable pressure range, on the basis of the above embodiment, a second pressure sensor 42 electrically connected to the control device is provided at the internal top of the condensation heat exchange chamber 4, and the second pressure sensor 42 is used to measure the internal pressure of the condensation heat exchange chamber 4 in real time and transmit it to the control device.

[0118] It should be noted that, as mentioned above, the condenser 41 is connected to the coolant supply device to form a coolant circulation and delivery loop, so as to circulate the refrigerant to the condenser 41 . Generally, a third solenoid valve will be provided in the coolant circulation and delivery loop to control the refrigerant flow in the condenser 41 .

[0119] The method for the control device to specifically control the internal pressure of the cold plate 2 is as follows: the first step is to obtain the internal pressure of the condensation heat exchange chamber 4; the second step is to determine whether the internal pressure of the condensation heat exchange chamber 4 is within the second pressure threshold range; the third step is, if the internal pressure of the condensation heat exchange chamber 4 is within the second pressure threshold range, it means that at this time, the internal pressures of the condensation heat exchange chamber 4 and the waste heat recovery condensation chamber 3 are maintained within a reasonable pressure range, and the third solenoid valve is not actuated; the third step is, if the internal pressure of the condensation heat exchange chamber 4 is not within the second pressure threshold range, it is necessary to further determine whether the internal pressure of the condensation heat exchange chamber 4 is too low or too high, that is, to compare the internal pressure of the condensation heat exchange chamber 4 with the second minimum pressure threshold, the second The size of the maximum pressure threshold; Step 4, if the internal pressure of the condensation heat exchange chamber 4 is greater than the second maximum pressure threshold, it means that the internal pressure of the condensation heat exchange chamber 4 is too high at this time, and the valve opening of the third solenoid valve is increased to increase the condensation amount of the second gaseous phase change working fluid at the top of the condensation heat exchange chamber 4, thereby reducing the internal pressure of the condensation heat exchange chamber 4, that is, reducing the internal pressure of the waste heat recovery condensation chamber 3; Step 5, if the internal pressure of the condensation heat exchange chamber 4 is less than the second maximum pressure threshold, it means that the internal pressure of the condensation heat exchange chamber 4 is too low at this time, and the valve opening of the third solenoid valve is reduced to reduce the condensation amount of the second gaseous phase change working fluid at the top of the condensation heat exchange chamber 4, thereby increasing the internal pressure of the condensation heat exchange chamber 4.

[0120] In order to ensure that the second liquid phase change working fluid 13 in the condensation heat exchange chamber 4 is sufficient, on the basis of the above embodiment, a liquid level sensor 43 electrically connected to the control device is provided inside the condensation heat exchange chamber 4, which is used to monitor the liquid level height of the second liquid phase change working fluid 13 and transmit it to the control device. If the liquid level of the second liquid phase change working fluid 13 in the condensation heat exchange chamber 4 does not reach the preset height, the control device controls the alarm device to sound an alarm to remind the replenishment of the second liquid phase change working fluid 13.

[0121] Figure 2 This is a structural schematic diagram of a server cooling system provided by the present invention. A server cooling system includes a server 11 and at least one two-phase cold plate device described in any one of the above embodiments.

[0122] It should be noted that the server 11 generally has multiple heat-generating electronic components such as chips 14 of multiple mainboards 15. Each mainboard 15 corresponds to a two-phase cold plate device. Multiple mainboards 15 can also share a heat recovery condensation chamber, pneumatic pump 6 and condenser 41 hot chamber. The chips 14 of multiple mainboards 15 are arranged in one-to-one contact with multiple cold plates 2 to save installation space and simplify pipeline layout.

[0123] Please refer to Figure 3 The present invention also provides a two-phase cold plate device control method for controlling the temperature of the server electronic component 1 to be maintained within a reasonable temperature range, comprising:

[0124] S11: obtaining the temperature of electronic components of the server;

[0125] It should be noted that the server electronic component 1 is provided with a temperature detector for measuring the temperature of the server electronic component 1 in real time and transmitting the temperature to the control device.

[0126] S12: Compare the temperature of the electronic component of the server with a first temperature threshold;

[0127] It should be noted that the first temperature threshold is higher than the reasonable temperature range of the server electronic component 1. When the temperature of the server electronic component 1 exceeds the first temperature threshold, the temperature of the server electronic component 1 is high and the performance is easily reduced. In addition, the reasonable temperature range of the server electronic component 1, such as the chip, is related to the boiling point temperature of the first liquid phase change medium and the junction temperature of the chip. The first temperature threshold is the higher value of the boiling point temperature of the first liquid phase change medium and 70% of the junction temperature of the chip.

[0128] S13: if the temperature of the electronic component of the server is greater than the first temperature threshold, increase the valve opening of the first solenoid valve and / or the valve opening of the second solenoid valve;

[0129] It should be noted that at this time, the temperature of the server electronic components 1 increases, and increasing the valve opening of the first solenoid valve 91 can increase the flow rate of the second liquid phase change working medium 13 entering the waste heat recovery condensation chamber 3, thereby increasing the condensation amount of the first gaseous phase change working medium, and then increasing the amount of the first liquid phase change working medium 12 refluxed by the cold plate 2, thereby reducing the temperature of the server electronic components 1; increasing the valve opening of the second solenoid valve 101 can increase the flow rate of the second gaseous phase change working medium output from the waste heat recovery condensation chamber 3, so as to improve the efficiency of the pneumatic pump 6 pumping the first liquid phase change working medium 12 back to the cold plate 2, thereby increasing the bubble detachment speed at the bottom end surface of the cold plate 2, and then reducing the temperature of the server electronic components 1. It can be seen that increasing the first solenoid valve 91 and / or the second solenoid valve 101 can reduce the temperature of the server electronic components 1.

[0130] S14: If the temperature of the electronic component of the server is less than or equal to the first temperature threshold, the valve openings of the first solenoid valve and the second solenoid valve are controlled to be at the set valve openings.

[0131] It should be noted that at this time, the temperature of the server electronic component 1 is within a reasonable temperature range, and the valve openings of the first solenoid valve 91 and the second solenoid valve 101 are controlled to be adjusted to the valve setting openings.

[0132] Therefore, the above control method can be used to accurately control the temperature of the server electronic component 1 to be maintained within a reasonable temperature range.

[0133] For further information, please refer to Figure 4 If the temperature of the server electronic component 1 is greater than the first temperature threshold, increasing the valve opening of the first solenoid valve 91 and / or the valve opening of the second solenoid valve 101 includes:

[0134] S131: Compare the temperature of the electronic component of the server with a second temperature threshold;

[0135] It should be noted that the second temperature threshold is higher than the first temperature threshold. The second temperature threshold is the higher value of the boiling point temperature of the first liquid phase change working fluid + 10°C and the chip junction temperature 80%. The temperature of the server electronic component 1 exceeds the second temperature threshold. The temperature of the server electronic component 1 is too high and easily leads to failure and damage.

[0136] S132: If the temperature of the electronic component of the server is less than or equal to the second temperature threshold, increase the valve opening of the second solenoid valve 101;

[0137] It should be noted that at this time, the temperature of the server electronic components 1 is relatively high, and the valve opening of the second solenoid valve 101 is increased to increase the air intake of the pneumatic pump 6, thereby improving the efficiency of the pneumatic pump 6 in pumping the first liquid phase change medium 12 back to the cold plate 2, thereby accelerating the bubble detachment speed of the bottom end surface of the cold plate 2, so that the server electronic components 1 are quickly cooled down.

[0138] S133: If the temperature of the electronic component of the server is greater than the second temperature threshold, increase the valve opening of the first solenoid valve and the valve opening of the second solenoid valve.

[0139] It should be noted that at this time, the temperature of the server electronic components 1 is too high, and the server electronic components 1 need to be cooled more quickly to prevent damage to the server electronic components 1. Therefore, the valve opening of the first solenoid valve 91 is increased to increase the condensation amount of the first gas phase change medium, thereby increasing the amount of the first liquid phase change medium 12 refluxed by the cold plate 2, that is, the cooling capacity of the cold plate 2 is increased. At the same time, the valve opening of the second solenoid valve 101 is increased to accelerate the bubble detachment speed of the bottom end surface of the cold plate 2, so that the server electronic components 1 can be cooled more quickly.

[0140] Therefore, the present invention reasonably controls the valve opening of the first solenoid valve 91 and the second solenoid valve 101 according to the temperature of the server electronic components 1, that is, the flow rate of the second liquid phase change working medium 13 introduced into the waste heat recovery condensing chamber 3 and the flow rate of the second gaseous phase change working medium discharged are controlled step by step according to the temperature of the server electronic components 1. That is to say, when the temperature is high, only the flow rate of the second gaseous phase change working medium discharged from the waste heat recovery condensing chamber 3 is increased to accelerate the bubble detachment speed at the bottom end surface of the cold plate 2, so that the temperature of the server electronic components 1 can be reduced to a reasonable temperature range; when the temperature is too high, the flow rate of the second liquid phase change working medium 13 introduced into the waste heat recovery condensing chamber 3 and the flow rate of the second gaseous phase change working medium discharged are increased at the same time to increase the cooling capacity of the cold plate 2 and the bubble detachment speed at the bottom end surface of the cold plate 2, so that the temperature of the server electronic components 1 can be reduced to a reasonable temperature range.

[0141] This control method can maintain the temperature of the server electronic component 1 within a reasonable temperature range on the one hand, and can reasonably control the amount of the second liquid phase-change working fluid 13 on the other hand to avoid wasting the second liquid phase-change working fluid 13 .

[0142] Please refer to Figure 5 The present invention provides a two-phase cold plate equipment control method for controlling the liquid replenishment in the condensation heat exchange chamber 4, comprising:

[0143] S21: obtaining the liquid level height of the second liquid phase-change working fluid;

[0144] It should be noted that a liquid level sensor 43 electrically connected to the control device is provided inside the condensation heat exchange chamber 4 for monitoring the liquid level of the second liquid phase-change working medium 13 and transmitting the level to the control device.

[0145] S22: If the liquid level of the second liquid phase-change working fluid reaches a preset height, the alarm device is controlled not to issue an alarm;

[0146] It should be noted that, at this time, the liquid level of the second liquid phase-change working fluid reaches a preset height and no artificial liquid replenishment is required, and the alarm device does not sound an alarm.

[0147] S23: If the liquid level of the second liquid phase-change working fluid does not reach a preset level, the alarm device is controlled to sound an alarm to remind the user to replenish the second liquid phase-change working fluid.

[0148] It should be noted that the alarm device can be preferably arranged on the condensing heat exchange chamber and electrically connected to the control device. If the liquid level of the second liquid phase change working medium 13 does not reach the preset height, the alarm device will sound an alarm to remind artificial rehydration.

[0149] Therefore, the present invention can ensure that a certain amount of the second liquid phase-change working medium 13 is maintained in the condensation heat exchange chamber 4, so as to allow the waste heat recovery condensation chamber 3 to introduce waste heat from the recovery cold plate 2, thereby ensuring that the overall equipment continues to perform heat dissipation operations.

[0150] In addition, it should be noted that the above steps S21 to S23 and steps S11 to S14 can be controlled and operated simultaneously to ensure that the overall device continues to perform heat dissipation operations while ensuring the heat dissipation effect of the overall device.

[0151] Please refer to Figure 6 The present invention provides a two-phase cold plate equipment control method for controlling the internal pressure of the cold plate to maintain within a reasonable pressure range, comprising:

[0152] S31: obtaining the internal pressure of the cold plate;

[0153] It should be noted that a first pressure sensor 23 electrically connected to the control device is provided at the inner top of the cold plate 2 for measuring the inner pressure of the cold plate 2 in real time and transmitting the pressure to the control device.

[0154] S32: If the internal pressure of the cold plate is within the first pressure threshold range, maintaining the valve opening of the first solenoid valve and the second solenoid valve;

[0155] It should be noted that the critical heat flux density of the first liquid phase change medium 12 in the cold plate 2 corresponds to the maximum allowable system working pressure, and the first pressure threshold range corresponds to 85%±5% of the maximum working pressure. If the internal pressure of the cold plate is within the first pressure threshold range, it means that the internal pressure of the cold plate 2 is within the first pressure threshold range, which means that the cold plate 2 has no risk of leakage or explosion, and does not affect the heat dissipation of the electronic components 1 of the server, then the first solenoid valve 91 and the second solenoid valve 101 will not be operated.

[0156] In addition, if the internal pressure of the cold plate is not within the first pressure threshold range, the internal pressure of the cold plate 2 has two situations: one is that the pressure is too low, which is lower than the first lowest pressure threshold of the first pressure threshold range; the other is that the pressure is too high, which is higher than the first highest pressure threshold of the first pressure threshold range.

[0157] S33: if the internal pressure of the cold plate is greater than the first maximum pressure threshold, increasing the valve opening of the first solenoid valve;

[0158] It should be noted that, if the internal pressure of the cold plate 2 is too high at this time, the valve opening of the first solenoid valve 91 is increased to increase the flow rate of the second liquid phase change working medium 13 delivered from the condensation heat exchange chamber 4 to the waste heat recovery condensation chamber 3, thereby absorbing more heat of the first gaseous phase change working medium at the top of the cold plate 2, thereby increasing the condensation amount of the first gaseous phase change working medium at the top of the cold plate 2, and the gas pressure of the cold plate 2 decreases.

[0159] S34: If the internal pressure of the cold plate is lower than the first minimum pressure threshold, reducing the valve opening of the first solenoid valve.

[0160] It should be noted that, if the internal pressure of the cold plate 2 is too low at this time, the valve opening of the first solenoid valve 91 is reduced to reduce the flow rate of the second liquid phase change working medium 13 transported from the condensation heat exchange chamber 4 to the waste heat recovery condensation chamber 3, which can reduce the condensation amount of the first gaseous phase change working medium on the top of the cold plate 2, and the gas pressure of the cold plate 2 increases.

[0161] In addition, after completing a round of adjustment, it is necessary to re-determine whether the internal pressure of the cold plate 2 is within the first pressure threshold range. If not, the above adjustment process is re-executed. If satisfied, the valve opening of the first solenoid valve 91 after the current adjustment is maintained until the next detection time.

[0162] Therefore, the present invention can accurately control the internal pressure of the cold plate 2 to maintain it within a reasonable pressure range, which not only ensures the safety of the equipment, but also ensures that the equipment effectively dissipates heat for the server electronic components 1, so that the temperature of the server electronic components 1 is maintained within a reasonable temperature range.

[0163] Please refer to Figure 7 The present invention provides a two-phase cold plate equipment control method for controlling a condensation heat exchange chamber and a waste heat recovery condensation chamber connected thereto to maintain a reasonable pressure range, comprising:

[0164] S41: Obtaining the internal pressure of the condensation heat exchange chamber;

[0165] It should be noted that a second pressure sensor 42 electrically connected to the control device is provided at the top of the condensation heat exchange chamber 4, which is used to measure the internal pressure of the condensation heat exchange chamber 4 in real time and transmit it to the control device. In addition, the condenser pipe 41 is connected to the coolant supply device to form a coolant circulation and delivery loop, and the coolant circulation and delivery loop is provided with a third solenoid valve electrically connected to the control device.

[0166] S42: If the internal pressure of the condensing heat exchange chamber is within the second pressure threshold range, maintaining the valve opening of the third solenoid valve;

[0167] It should be noted that the critical heat flux density of the second liquid phase change working medium 13 in the condensation heat exchange chamber 4 corresponds to the maximum allowable system working pressure, and the second pressure threshold range corresponds to 85%±5% of the maximum working pressure. The internal pressure of the condensation heat exchange chamber is within the second pressure threshold range. At this time, the internal pressure of the condensation heat exchange chamber 4 and the waste heat recovery condensation chamber 3 connected thereto is maintained within a reasonable pressure range, that is, the content of the second gaseous phase change working medium generated by the heat exchange and vaporization of the second liquid phase change working medium 13 and the first gaseous phase change working medium is normal. Correspondingly, the condensation amount of the first gaseous phase change working medium is normal, the liquid amount of the first liquid phase change working medium 12 refluxed by the cold plate 2 is normal, and the temperature of the server electronic component 1 is maintained within a reasonable temperature range, then the third solenoid valve will not be actuated.

[0168] In addition, the internal pressure of the condensation heat exchange chamber is not within the second pressure threshold range. At this time, the internal pressure of the condensation heat exchange chamber 4 has two situations. One pressure is too low, which is lower than the second lowest pressure threshold of the second pressure threshold range, and the other pressure is too high, which is higher than the second highest pressure threshold of the second pressure threshold range.

[0169] S43: if the internal pressure of the condensing heat exchange chamber is greater than the second maximum pressure threshold, increasing the valve opening of the third solenoid valve;

[0170] It should be noted that at this time, the internal pressure of the condensation heat exchange chamber 4 is too high, and the valve opening of the third solenoid valve is increased to increase the condensation amount of the second gaseous phase change working fluid at the top of the condensation heat exchange chamber 4, thereby reducing the internal pressure of the condensation heat exchange chamber 4, that is, reducing the internal pressure of the waste heat recovery condensation chamber 3.

[0171] S44: If the internal pressure of the condensing heat exchange chamber is lower than the second maximum pressure threshold, reducing the valve opening of the third solenoid valve.

[0172] It should be noted that at this time, the internal pressure of the condensation heat exchange chamber 4 is too low, and the valve opening of the third solenoid valve is reduced to reduce the condensation amount of the second gaseous phase change working fluid at the top of the condensation heat exchange chamber 4, thereby increasing the internal pressure of the condensation heat exchange chamber 4, that is, increasing the internal pressure of the waste heat recovery condensation chamber 3.

[0173] Therefore, the present invention can accurately control the internal pressure of the condensation heat exchange chamber 4 and the waste heat recovery condensation chamber 3 connected thereto to maintain it within a reasonable pressure range, which not only ensures the safety of the equipment, but also ensures that the equipment effectively performs heat dissipation operations on the server electronic components 1, so that the temperature of the server electronic components 1 is maintained within a reasonable temperature range.

[0174] In addition, it should be noted that the above steps S31-S34 and steps S41-S44 can be controlled and operated simultaneously to ensure that the internal pressure of the cold plate, the internal pressure of the condensation heat exchange chamber and the internal pressure of the waste heat recovery condensation chamber are all within a reasonable pressure range, so as to greatly ensure the safety of the heat dissipation operation of the overall equipment.

[0175] If the internal pressure of the condensing heat exchange chamber is within the second pressure threshold range, i.e., within the reasonable pressure range, in addition to executing the above step S42, another control method includes:

[0176] S45: Compare the temperature of the electronic component of the server with a third temperature threshold;

[0177] It should be noted that the third temperature threshold is greater than the second temperature threshold and the first temperature threshold. The third temperature threshold is the higher value of the boiling point temperature of the first liquid phase change working fluid + 20°C and the chip junction temperature 90%. The temperature of the server electronic component 1 exceeds the third temperature threshold. The temperature of the server electronic component 1 is too high and can easily cause melting or even fire.

[0178] S46: If the temperature of the electronic component of the server is greater than the second temperature threshold and less than or equal to the third temperature threshold, increase the valve opening of the first solenoid valve and the valve opening of the second solenoid valve;

[0179] It should be noted that at this time, the temperature of the server electronic component 1 does not exceed the third temperature threshold, but exceeds the second temperature threshold. The temperature of the server electronic component 1 can be reduced to a reasonable temperature range by simply increasing the valve opening of the first solenoid valve 91 and the second solenoid valve 101.

[0180] S47: If the temperature of the electronic component of the server is greater than the third temperature threshold, increase the valve opening of the first solenoid valve, the valve opening of the second solenoid valve, and the valve opening of the third solenoid valve.

[0181] It should be noted that at this time, the server electronic components 1 are too high, and it is difficult for the server electronic components 1 to quickly cool down to a reasonable temperature range by only increasing the valve opening of the first solenoid valve 91 and the second solenoid valve 101. When the internal pressure of the condensation heat exchange chamber 4 meets the requirement of maintaining within a reasonable pressure range, increasing the valve opening of the third solenoid valve to increase the refrigerant flow in the condensation tube 41 can enhance the heat exchange effect between the condensation tube 41 and the second gas phase change medium at the top of the condensation heat exchange chamber 4, thereby increasing the cooling capacity of the condensed second gas phase change medium, i.e., the second liquid phase change medium 13, which is passed into the waste heat recovery condensation chamber 3, and can increase the condensation amount of the first gas phase change medium, thereby reducing the temperature of the server electronic components 1. Therefore, if the server electronic components 1 are too high, increasing the valve opening of the first solenoid valve 91, the valve opening of the second solenoid valve 101, and the valve opening of the third solenoid valve at the same time can greatly increase the cooling speed of the server electronic components 1, so that the temperature of the server electronic components 1 is reduced to a reasonable temperature range.

[0182] Therefore, the present invention reasonably controls the valve openings of the first solenoid valve 91, the second solenoid valve 101 and the third solenoid valve according to the temperature of the server electronic component 1, and the three cooperate with each other to greatly ensure that the temperature of the server electronic component 1 is maintained within a reasonable temperature range.

[0183] Figure 8 A structural diagram of a control device provided by an embodiment of the present invention, a control device comprising: a memory 01, for storing a computer program;

[0184] The processor 02 is used to implement the steps of the two-phase cold plate device control method of the above embodiment when executing the computer program.

[0185] The control device provided in this embodiment may include but is not limited to a smart phone, a tablet computer, a laptop computer, or a desktop computer.

[0186] Among them, the processor 02 may include one or more processing cores, such as a core processor, a core processor, etc. The processor 02 may be implemented in at least one hardware form of digital signal processing (DSP), field-programmable gate array (FPGA), and programmable logic array (PLA). The processor 02 may also include a main processor and a coprocessor. The main processor is a processor for processing data in the awake state, also known as a central processing unit (CPU); the coprocessor is a low-power processor for processing data in the standby state. In some embodiments, the processor 02 may be integrated with a graphics processing unit (GPU), and the GPU is responsible for rendering and drawing the content to be displayed on the display screen. In some embodiments, the processor 02 may also include an artificial intelligence (AI) processor, which is used to process computing operations related to machine learning.

[0187] The memory 01 may include one or more computer-readable storage media, which may be non-transitory. The memory 01 may also include a high-speed random access memory, and a non-volatile memory, such as one or more disk storage devices, flash memory storage devices. In this embodiment, the memory 01 is at least used to store the following computer program 011, wherein, after the computer program is loaded and executed by the processor 02, it can implement the relevant steps of the two-phase cold plate device control method disclosed in any of the aforementioned embodiments. In addition, the resources stored in the memory 01 may also include an operating system 012 and data 013, etc., and the storage method may be temporary storage or permanent storage. Among them, the operating system 012 may include Windows, Unix, Linux, etc.

[0188] In some embodiments, the control device may further include a display screen 03 , an input / output interface 04 , a communication interface 05 , a power supply 06 , and a communication bus 07 .

[0189] Those skilled in the art will understand that Figure 6 The structure shown in the figure does not constitute a limitation on the control device, and may include more or fewer components than shown in the figure.

[0190] It is understandable that if the two-phase cold plate device control method in the above embodiment is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the current technology or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and executes all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), electrically erasable programmable ROM, register, hard disk, removable disk, CD-ROM, magnetic disk or optical disk and other media that can store program codes.

[0191] Based on this, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned two-phase cold plate device control method are implemented.

[0192] The above is a detailed introduction to a two-phase cold plate device, a server cooling system and a control method provided by an embodiment of the present invention. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part description.

[0193] The above is a detailed introduction to a two-phase cold plate device, a server cooling system, a control method, a control device, a computer-readable storage medium and a program product provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A two-phase cold plate device, characterized in that: include: A cold plate (2) filled with a first liquid phase-change working medium (12) for exchanging heat with a server electronic component (1) in contact with the bottom end surface of the cold plate (2), and the cold plate (2) is provided with a cold plate liquid return port (21) close to the bottom end surface of the cold plate (2) and a cold plate air outlet (22) located at the top of the cold plate (2); A waste heat recovery condensation chamber (3), the interior of which is filled with a second liquid phase change working medium (13) having a boiling point lower than that of the first liquid phase change working medium (12), and a gas source outlet (31) is provided at the top of the waste heat recovery condensation chamber (3); A circulation pipeline (5), a first end of which is connected to the cold plate air outlet (22), and a second end of which passes through the waste heat recovery condensation chamber (3) and is connected to the cold plate liquid return port (21); A pneumatic pump (6) is provided on the circulation pipeline (5) between the waste heat recovery condensation chamber (3) and the cold plate liquid return port (21), and is connected to the air source outlet (31).

2. The two-phase cold plate device according to claim 1, characterized in that: It also includes a condensation heat exchange chamber (4), the top of the condensation heat exchange chamber (4) is connected to the gas source outlet (31) of the waste heat recovery condensation chamber (3) via an air inlet pipe (10), the bottom of the condensation heat exchange chamber (4) is connected to the condensate return port (32) of the waste heat recovery condensation chamber (3) via a liquid return pipe (9), and a condensation pipe (41) is provided inside the condensation heat exchange chamber (4) for exchanging heat with the vaporized second liquid phase change working medium (13) discharged from the gas source outlet (31).

3. The two-phase cold plate device according to claim 2, characterized in that: An impeller (7) is provided inside the air inlet pipe (10), and the impeller (7) is connected to the pneumatic pump (6) via a drive shaft (8).

4. The two-phase cold plate device according to claim 1, characterized in that: The circulation pipeline (5) comprises a main pipeline (51) and at least one branch pipeline (52); the main pipeline (51) runs through the waste heat recovery condensation chamber (3) and is connected between the cold plate air outlet (22) and the liquid inlet end of the pneumatic pump (6); the liquid outlet end of the pneumatic pump (6) is correspondingly connected to at least one cold plate liquid return port (21) via at least one branch pipeline (52).

5. The two-phase cold plate device according to claim 4, characterized in that: The liquid outlet end of the pneumatic pump (6) is connected to the first ends of the two branch pipes (52), and the second ends of the two branch pipes (52) are correspondingly connected to two cold plate liquid return ports (21) disposed on opposite sides of the cold plate (2). The pneumatic pump (6) is a pneumatic diaphragm pump, which is used to periodically agitate and control the alternating liquid flow of the two branch pipes (52).

6. The two-phase cold plate device according to claim 3, characterized in that: It also includes a control device, wherein the liquid return pipe (9) is provided with a first solenoid valve (91) electrically connected to the control device, and the air intake pipe (10) is provided with a second solenoid valve (101) electrically connected to the control device.

7. The two-phase cold plate device according to claim 6, characterized in that The inner top end of the cold plate (2) is provided with a first pressure sensor (23) electrically connected to the control device, and is used to measure the internal pressure of the cold plate in real time.

8. The two-phase cold plate device according to claim 6, characterized in that A second pressure sensor (42) electrically connected to the control device is provided at the inner top of the condensation heat exchange chamber (4) and is used to measure the internal pressure of the condensation heat exchange chamber in real time.

9. The two-phase cold plate device according to claim 6, characterized in that A liquid level sensor (43) electrically connected to the control device is provided inside the condensation heat exchange chamber (4).

10. A server cooling system, characterized in that: It comprises a server (11) and at least one two-phase cold plate device as described in any one of claims 1 to 9.

11. A two-phase cold plate equipment control method, characterized in that: The two-phase cold plate device as claimed in any one of claims 6 to 9 above comprises: Obtaining the temperature of the electronic components of the server; Comparing the temperature of the electronic component of the server with a first temperature threshold; If the temperature of the electronic component of the server is greater than the first temperature threshold, increasing the valve opening of the first solenoid valve and / or the valve opening of the second solenoid valve; If the temperature of the electronic component of the server is less than or equal to the first temperature threshold, the valve openings of the first solenoid valve and the second solenoid valve are controlled to be at the set valve openings.

12. The two-phase cold plate equipment control method according to claim 11, characterized in that: If the temperature of the electronic component of the server is greater than the first temperature threshold, increasing the valve opening of the first solenoid valve and / or the valve opening of the second solenoid valve includes: Comparing the temperature of the electronic component of the server with a second temperature threshold; If the temperature of the electronic component of the server is less than or equal to the second temperature threshold, increasing the valve opening of the second solenoid valve; If the temperature of the electronic component of the server is greater than the second temperature threshold, the valve opening of the first solenoid valve and the valve opening of the second solenoid valve are increased.

13. The two-phase cold plate equipment control method according to claim 11, characterized in that: A liquid level sensor electrically connected to the control device is provided inside the condensation heat exchange chamber for monitoring the liquid level height of the second liquid phase-change working medium; the two-phase cold plate equipment control method also includes: Obtaining the liquid level height of the second liquid phase-change working fluid; If the liquid level of the second liquid phase-change working medium reaches a preset height, the alarm device is controlled not to give an alarm; If the liquid level of the second liquid phase-change working medium does not reach a preset height, the control alarm device will sound an alarm to remind the user to replenish the second liquid phase-change working medium.

14. The two-phase cold plate equipment control method according to claim 11, characterized in that: The inner top of the cold plate is provided with a first pressure sensor electrically connected to the control device for measuring the internal pressure of the cold plate in real time; the two-phase cold plate equipment control method also includes: Obtaining the internal pressure of the cold plate; If the internal pressure of the cold plate is within a first pressure threshold range, maintaining the valve openings of the first solenoid valve and the second solenoid valve; If the internal pressure of the cold plate is greater than the first maximum pressure threshold, increasing the valve opening of the first solenoid valve; If the internal pressure of the cold plate is lower than the first minimum pressure threshold, the valve opening of the first solenoid valve is reduced.

15. The two-phase cold plate equipment control method according to claim 12, characterized in that: The inner top of the condensing heat exchange chamber is provided with a second pressure sensor electrically connected to the control device for measuring the internal pressure of the condensing heat exchange chamber in real time, and the condensing pipe is connected to the coolant supply device to form a coolant circulation and delivery loop, and the coolant circulation and delivery loop is provided with a third solenoid valve; the two-phase cold plate equipment control method also includes: Obtaining the internal pressure of the condensation heat exchange chamber; If the internal pressure of the condensing heat exchange chamber is within the second pressure threshold range, maintaining the valve opening of the third solenoid valve; If the internal pressure of the condensing heat exchange chamber is greater than the second maximum pressure threshold, increasing the valve opening of the third solenoid valve; If the internal pressure of the condensing heat exchange chamber is lower than the second minimum pressure threshold, the valve opening of the third solenoid valve is reduced.

16. The two-phase cold plate equipment control method according to claim 15, characterized in that: If the internal pressure of the condensing heat exchange chamber is within the second pressure threshold range, the method further includes: Comparing the temperature of the electronic component of the server with a third temperature threshold; If the temperature of the electronic component of the server is greater than the second temperature threshold and less than or equal to the third temperature threshold, increasing the valve opening of the first solenoid valve and the valve opening of the second solenoid valve; If the temperature of the electronic component of the server is greater than the third temperature threshold, the valve opening of the first solenoid valve, the valve opening of the second solenoid valve, and the valve opening of the third solenoid valve are increased.

17. A control device, characterized in that: include: Memory for storing computer programs; A processor is used to execute the computer program to implement the steps of the two-phase cold plate device control method according to any one of claims 11 to 16.

18. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the two-phase cold plate device control method according to any one of claims 11 to 16 are implemented.

19. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the two-phase cold plate device control method described in any one of claims 11-16 are implemented.

Images