Heat dissipation system, electronic device, control method of heat dissipation system, and program product

Abstract

The present application discloses a heat dissipation system, an electronic device, a control method for the heat dissipation system, and a program product, which relate to the field of computer heat dissipation technology. The system includes a cold plate, a negative pressure component, a condenser, a data acquisition module, and a control module. The inlet end of the negative pressure component is connected to the outlet end of the cold plate. The negative pressure component is used to form a negative pressure environment. The condenser is used to exchange heat with the outside world. The outlet end of the condenser is connected to the inlet end of the cold plate. The air inlet end of the condenser is connected to the air outlet end of the negative pressure component. The liquid inlet end of the condenser is connected to the liquid outlet end of the negative pressure component. The control module is at least used to output a control signal for adjusting the negative pressure component based on the data information of the heating element collected by the data acquisition module. The system solves the current technical problem of poor heat dissipation effect, helps to reduce the boiling point of the phase change working medium and the pressure of the entire heat dissipation system, realizes dynamic adjustment of the temperature of the heating element, and improves heat dissipation efficiency and reliability.

Description

Technical Field

[0001] The present application belongs to the field of computer heat dissipation technology, and in particular relates to a heat dissipation system, an electronic device, a control method for the heat dissipation system, and a program product. Background Art

[0002] With the rapid development of cloud computing and big data, the power required by servers is increasing, and the heat flux density of key heat-generating components such as chips within servers is also increasing dramatically. However, due to the limitations of their structure and operating principles, the heat dissipation efficiency of current heat dissipation methods has reached its upper limit and is difficult to improve further, unable to meet the growing heat dissipation needs of heat-generating components. Summary of the Invention

[0003] The present application provides a heat dissipation system, an electronic device, a control method for the heat dissipation system, and a program product to at least solve the problem that the heat dissipation methods in the related art cannot meet the growing heat dissipation needs of heat-generating devices.

[0004] The present application provides a heat dissipation system, comprising:

[0005] A cooling circuit, the cooling circuit comprising a connected cold plate, a negative pressure assembly and a condenser, the cold plate being used to exchange heat with the heating element, the inlet end of the negative pressure assembly being connected to the outlet end of the cold plate, the negative pressure assembly being used to form a negative pressure environment, the condenser being used to exchange heat with the outside world, the outlet end of the condenser being connected to the inlet end of the cold plate, the air inlet end of the condenser being connected to the air outlet end of the negative pressure assembly, and the liquid inlet end of the condenser being connected to the liquid outlet end of the negative pressure assembly;

[0006] A data acquisition module, at least used to collect data information of the heating element;

[0007] The control module is at least used to output a control signal for adjusting the negative pressure component according to the data information.

[0008] The present application also provides an electronic device, comprising:

[0009] heating element; and

[0010] The heat dissipation system as described above is used to dissipate heat from the heating element.

[0011] The present application also provides a control method for a heat dissipation system, which is applied to the heat dissipation system described above. The control method includes:

[0012] Obtain data information of the heating element through the data acquisition module;

[0013] A control signal for adjusting the negative pressure component is output according to the data information.

[0014] The present application also provides a computer program product, comprising:

[0015] An obtaining unit, used for obtaining data information of the heating element;

[0016] The output unit is used to output a control signal for adjusting the negative pressure component according to the data information.

[0017] The present application also provides a computer-readable storage medium, in which a computer program is stored. When the computer program is executed by a processor, the steps of any of the above-mentioned control methods for the heat dissipation system are implemented.

[0018] Through this application, since the negative pressure component provides a negative pressure environment, on the one hand, the boiling point of the phase change medium can be lowered, and the phase change medium can be phase-changed at a lower temperature, thereby improving the heat dissipation efficiency and flexibility of use, and accelerating the circulation of the phase change medium; on the other hand, the pressure of the entire heat dissipation system can be reduced, thereby improving the reliability of the heat dissipation system. At the same time, the control module outputs a corresponding control signal to adjust the negative pressure component based on the data information received from the heating element. By adjusting the negative pressure component in real time to ensure the heat dissipation effect, the temperature of the heating element can be dynamically adjusted, and the reliability of the heat dissipation system can be improved. Therefore, the current technical problem of poor heat dissipation effect can be solved, and the technical effect of improving heat dissipation efficiency and reliability can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic structural diagram of a heat dissipation system provided in an embodiment of the present application;

[0021] Figure 2 This is a flow chart of a control method for a heat dissipation system provided in an embodiment of the present application;

[0022] Figure 3 A second flow chart of a method for controlling a heat dissipation system provided in an embodiment of the present application;

[0023] Figure 4 The phase diagram of water provided in the examples of this application;

[0024] Figure 5 A computer program product is provided in an embodiment of the present application.

[0025] The above drawings include the following reference numerals:

[0026] 100. Cooling circuit;

[0027] 110, cold plate;

[0028] 121. Negative pressure chamber; 122. Air extraction device; 123. Circulation pump; 124. Gas-liquid separator;

[0029] 130. Condenser;

[0030] 141, liquid collecting chamber;

[0031] 150, exhaust valve;

[0032] 211, fluid infusion chamber; 220, fluid infusion pump;

[0033] 610, acquisition unit; 620, output unit. DETAILED DESCRIPTION

[0034] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] It should be noted that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like, indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely for ease of description and simplification of the present application. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present application. The terms "mounted," "connected," and "connected" should be interpreted broadly, and may include, for example, fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. The terms "parallel," "perpendicular," and "equal" encompass the described conditions and conditions similar to the described conditions, provided that the range of the similar conditions is within an acceptable range of deviation, as determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes both absolute parallelism and approximate parallelism, where the acceptable deviation range for approximate parallelism may be, for example, within 5°; "perpendicular" includes both absolute perpendicularity and approximate perpendicularity, where the acceptable deviation range for approximate perpendicularity may also be, for example, within 5°. "Equal" includes both absolute equality and approximate equality, where the acceptable deviation range for approximate equality may be, for example, that the difference between the two is less than or equal to 5% of either. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0036] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0037] An embodiment of the present application provides a heat dissipation system. The device is described in detail in combination with the structure and working principle of the heat dissipation system (the technical terms involved must be explained).

[0038] In some embodiments, as Figure 1 As shown, the heat dissipation system includes a cooling circuit 100, a data acquisition module and a control module.

[0039] The cooling circuit 100 includes a connected cold plate 110, a negative pressure component and a condenser 130. The cold plate 110 is used to exchange heat with the heating element. The inlet end of the negative pressure component is connected to the outlet end of the cold plate 110. The negative pressure component is used to form a negative pressure environment. The condenser 130 is used to exchange heat with the outside world. The outlet end of the condenser 130 is connected to the inlet end of the cold plate 110. The air inlet end of the condenser 130 is connected to the air outlet end of the negative pressure component. The liquid inlet end of the condenser 130 is connected to the liquid outlet end of the negative pressure component.

[0040] For example, the type of the cold plate 110 includes but is not limited to a microchannel liquid cooling plate 110. The cold plate 110 is made of a material having a high thermal conductivity, including but not limited to copper.

[0041] It should be noted that the heating elements include, but are not limited to, electronic devices such as chips. The cold plate 110 is a two-phase cold plate 110 filled with a liquid phase-change medium. The liquid phase-change medium vaporizes through heat exchange with the heating elements, absorbing heat during the vaporization process to achieve efficient heat dissipation of the heating elements.

[0042] Exemplarily, the cold plate 110 contacts and cooperates with the heating element to improve the heat dissipation effect on the heating element.

[0043] It can be understood that the cold plate 110 absorbs the heat generated by the heating element, causing at least part of the phase change medium to be heated and undergo a phase change (i.e., from liquid to gas) in the cold plate 110. Under the action of negative pressure, the gaseous phase change medium passes through the air outlet end of the negative pressure component and the air inlet end of the condenser 130 in sequence and then enters the condenser 130. The liquid phase change medium passes through the liquid outlet end of the negative pressure component and the liquid inlet end of the condenser 130 in sequence and then enters the condenser 130. The gaseous phase change medium exchanges heat with the external cooling medium (such as air), releases latent heat and turns back into liquid. The cooled phase change medium flows back to the cold plate 110 through the outlet end of the condenser 130, completing a cooling cycle.

[0044] At the same time, the negative pressure component provides a negative pressure environment, which can, on the one hand, reduce the boiling point of the phase change fluid, enable the phase change of the phase change fluid at a lower temperature, improve the heat dissipation efficiency and flexibility of use, and accelerate the circulation flow of the phase change fluid; on the other hand, it can also reduce the pressure of the entire heat dissipation system and improve the reliability of the heat dissipation system.

[0045] Exemplarily, the phase-change working fluid includes but is not limited to water, which reduces manufacturing and maintenance costs.

[0046] It should be noted that if Figure 1 As shown, the direction indicated by the arrow represents the flow direction of the phase change medium.

[0047] The data acquisition module is at least used to collect data information of the heating element; the control module is at least used to output a control signal for adjusting the negative pressure component according to the data information.

[0048] It is understood that the data acquisition module collects data information from the heating element (such as its temperature, power consumption, or operating status) to understand the current heating status of the heating element and provide a basis for subsequent heat dissipation control. The control module is electrically connected to the data acquisition module. Based on the data information received from the heating element, the control module outputs corresponding control signals to adjust the negative pressure assembly. By adjusting the negative pressure assembly in real time to ensure effective heat dissipation, dynamic regulation of the heating element temperature is achieved, and the reliability of the heat dissipation system is improved.

[0049] The heat dissipation system provided in this embodiment reduces the boiling point of the phase change medium and the pressure of the entire heat dissipation system by introducing a negative pressure component, and dynamically adjusts the temperature of the heating element through a data acquisition module and a control module, thereby improving heat dissipation efficiency and reliability.

[0050] In some embodiments, as Figure 1 As shown, the negative pressure component includes a shell, an exhaust device 122 and a circulating pump 123. The shell forms a negative pressure chamber 121, which is used to accommodate a gas-liquid two-phase phase change working medium. The inlet end of the negative pressure chamber 121 is connected to the outlet end of the cold plate 110; the exhaust device 122 is used to generate negative pressure in the negative pressure chamber 121, the air inlet end of the exhaust device 122 is connected to the air outlet end of the negative pressure chamber 121, and the air outlet end of the exhaust device 122 is connected to the air inlet end of the condenser 130; the circulating pump 123 is respectively connected to the liquid outlet end of the negative pressure chamber 121 and the liquid inlet end of the condenser 130, and is used to drive the liquid phase change working medium from the negative pressure chamber 121 to flow into the condenser 130.

[0051] Illustratively, the air extraction device 122 includes, but is not limited to, a vacuum pump.

[0052] It should be noted that the size and shape of the negative pressure chamber 121 can be designed according to actual needs, and this embodiment does not impose any specific restrictions on this.

[0053] It is understood that the gas is extracted from the negative pressure chamber 121 by the exhaust device 122, reducing the pressure within the negative pressure chamber 121, providing a negative pressure environment for the cooling circuit 100, and promoting the circulation of the phase change medium. The heat generated by the heating element is absorbed by the phase change medium in the cold plate 110, and at least part of the liquid phase change medium undergoes a phase change (from liquid to gas) after being heated, absorbing a large amount of latent heat. The part of the gaseous phase change medium that may not have vaporized and is in liquid form enters the negative pressure chamber 121. Subsequently, using the density difference between gas and liquid, the gaseous phase change medium is extracted through the exhaust device 122 and enters the condenser 130. The liquid phase change medium is driven by the circulation pump 123 to enter the condenser 130. In addition, using the circulation pump 123 to allow the liquid phase change medium to enter the condenser 130 directly can also reduce the possibility of it entering the exhaust device 122, thereby improving the reliability of the operation of the exhaust device 122.

[0054] In some embodiments, the data information of the heating element includes the actual temperature of the heating element, and the control signal includes the pumping rate of the pumping device 122 .

[0055] It is understood that the control module dynamically adjusts the extraction rate of the extraction device 122 according to the actual temperature of the heating element, thereby achieving dynamic optimization control. This control strategy not only improves the heat dissipation efficiency, but also achieves energy conservation and environmental protection, while extending the service life of the heat dissipation system.

[0056] For example, when the actual temperature of the heating element is high, the control module outputs a control signal to increase the pumping rate of the pumping device 122, thereby reducing the pressure within the negative pressure chamber 121, further lowering the boiling point of the phase-change working fluid, accelerating its vaporization rate, and improving heat dissipation efficiency. Conversely, when the actual temperature of the heating element is low, the control module outputs a control signal to reduce the pumping rate of the pumping device 122, thereby increasing the pressure within the negative pressure chamber 121, further increasing the boiling point of the phase-change working fluid, and reducing its vaporization rate, thereby saving energy.

[0057] In some embodiments, the data acquisition module includes a temperature sensor, and at least one of the cold plate 110 and the heating element is provided with a temperature sensor to obtain the actual temperature of the heating element in an indirect or direct manner.

[0058] In some embodiments, a pressure sensor is provided in the negative pressure chamber 121 to determine the pumping rate of the pumping device 122 by monitoring the pressure change in the negative pressure chamber 121 and combining the known volume and time in the negative pressure chamber 121. Of course, in other embodiments, a flow sensor may also be used to determine the pumping rate of the pumping device 122, and this embodiment does not impose any specific limitation on this.

[0059] In some embodiments, the data acquisition module is further used to collect liquid level information of the negative pressure chamber 121 , and the control module is used to output a control signal for driving the circulation pump 123 to start and stop according to the liquid level information of the negative pressure chamber 121 .

[0060] It is understood that the liquid level information of the negative pressure chamber 121 reflects the amount of liquid phase change medium in the negative pressure chamber 121. That is, if the liquid level is too high, the liquid medium may overflow the outlet of the negative pressure chamber 121 and enter the air extraction device 122, affecting the normal operation of the air extraction device 122. If the liquid level is too low, the liquid phase change medium may be insufficient, affecting the heat dissipation effect. The control module controls the start and stop of the circulation pump 123 based on the liquid level height in the negative pressure chamber 121 obtained in real time by the data acquisition module, ensuring that the liquid phase change medium can maintain an appropriate liquid level in the negative pressure chamber 121, realizing dynamic adjustment of the circulation flow of the liquid phase change medium, reducing unnecessary energy consumption, and ensuring the stability of the heat dissipation effect.

[0061] For example, when the liquid level information of the negative pressure chamber 121 is lower than the first threshold value (i.e., the liquid phase change working medium in the negative pressure chamber 121 is at a low liquid level), the control module sends a control signal to pause the circulation pump 123, so that the liquid phase change working medium accumulates in the negative pressure chamber 121; when the liquid level information of the negative pressure chamber 121 is higher than the second threshold value (i.e., the liquid phase change working medium in the negative pressure chamber 121 is at a high liquid level), the control module sends a control signal to start the circulation pump 123, so that the liquid phase change working medium in the negative pressure chamber 121 flows into the condenser 130 and enters the cooling cycle.

[0062] In some embodiments, the data acquisition module includes a first liquid level sensor, which is disposed in the negative pressure chamber 121 and is used to monitor the liquid level in the negative pressure chamber 121 in real time. Exemplarily, the first liquid level sensor includes but is not limited to a static pressure liquid level sensor, an ultrasonic liquid level sensor, or a capacitive liquid level sensor.

[0063] It can be understood that the first liquid level sensor is installed in the negative pressure chamber 121, which can detect the liquid level of the liquid phase change medium in real time and convert it into an electrical signal containing liquid level information and transmit it to the control module so that the control module can determine whether to start or stop the circulation pump 123.

[0064] In some embodiments, as Figure 1 As shown, the negative pressure assembly further includes a gas-liquid separator 124, the gas inlet end of the gas-liquid separator 124 is connected to the gas outlet end of the negative pressure chamber 121, the gas outlet end of the gas-liquid separator 124 is connected to the gas inlet end of the air extraction device 122, and the liquid outlet end of the gas-liquid separator 124 is connected to the circulation pump 123. Exemplarily, the gas-liquid separator 124 includes but is not limited to a gravity-type gas-liquid separator 124, a cyclone-type gas-liquid separator 124, a filtration-type gas-liquid separator 124, or a floating-type gas-liquid separator 124.

[0065] It can be understood that the use of the gas-liquid separator 124 to separate the phase change working fluid flowing out of the air outlet end of the negative pressure chamber 121 again can not only ensure that only the gaseous phase change working fluid enters the exhaust device 122 as much as possible, thereby reducing the possibility of a decrease in exhaust efficiency or damage to the exhaust device 122 due to the liquid phase change working fluid entering the exhaust device 122, but also ensure the stability of the flow rates of the gaseous and liquid phase change working fluids in the heat dissipation system by further separating the gas and liquid, thereby optimizing the heat dissipation effect.

[0066] In some embodiments, the data acquisition module is further used to collect liquid level information of the gas-liquid separator 124 , and the control module is used to output a control signal for driving the circulation pump 123 to start and stop according to the liquid level information of the gas-liquid separator 124 .

[0067] It is understood that the liquid level information of gas-liquid separator 124 reflects the amount of liquid phase-change working fluid in gas-liquid separator 124. Specifically, if the liquid level is too high, the liquid working fluid may overflow to the outlet of gas-liquid separator 124 and enter exhaust device 122, affecting the normal operation of exhaust device 122. If the liquid level is too low, the liquid phase-change working fluid may be insufficient, affecting the heat dissipation effect. The control module obtains the liquid level height in gas-liquid separator 124 in real time based on the data acquisition module, ensuring that the liquid phase-change working fluid maintains an appropriate liquid level in gas-liquid separator 124, dynamically adjusting the circulation flow of the liquid phase-change working fluid, reducing unnecessary energy consumption, and ensuring the stability of the heat dissipation effect.

[0068] Exemplarily, when the liquid level information of the gas-liquid separator 124 is lower than the third threshold value (i.e., the liquid phase-change working fluid in the gas-liquid separator 124 is at a low liquid level), the control module sends a control signal to pause the circulation pump 123, so that the liquid phase-change working fluid accumulates in the negative pressure chamber 121; when the liquid level information of the gas-liquid separator 124 is higher than the fourth threshold value (i.e., the liquid phase-change working fluid in the gas-liquid separator 124 is at a high liquid level), the control module sends a control signal to start the circulation pump 123, so that the liquid phase-change working fluid in the gas-liquid separator 124 flows into the condenser 130 and enters the cooling cycle.

[0069] In some embodiments, the data acquisition module includes a second liquid level sensor, which is disposed in the gas-liquid separator 124 and is used to monitor the liquid level in the gas-liquid separator 124 in real time. By way of example, the second liquid level sensor includes but is not limited to a static pressure liquid level sensor, an ultrasonic liquid level sensor, or a capacitive liquid level sensor.

[0070] It can be understood that the second liquid level sensor is installed in the gas-liquid separator 124, which can detect the liquid level height of the liquid phase change working medium in real time and convert it into an electrical signal containing liquid level information and transmit it to the control module so that the control module can determine whether to start or pause the circulation pump 123.

[0071] It should be noted that in some embodiments, when the data acquisition module simultaneously collects liquid level information from the negative pressure chamber 121 and the gas-liquid separator 124, the circulation pump 123 is controlled to start when the liquid level in at least one of the negative pressure chamber 121 and the gas-liquid separator 124 is high, and the circulation pump 123 is controlled to start when the liquid level in at least one of the negative pressure chamber 121 and the gas-liquid separator 124 is low. Of course, in other embodiments, the liquid level information of the negative pressure chamber 121 may be primary, and this embodiment does not impose any specific limitation on this.

[0072] In some embodiments, as Figure 1 As shown, the cooling circuit 100 further includes a liquid collecting member, which forms a liquid collecting chamber 141. The liquid inlet of the liquid collecting chamber 141 is connected to the outlet of the condenser 130, and the liquid outlet of the liquid collecting chamber 141 is connected to the inlet of the cold plate 110. It should be noted that the shape and size of the liquid collecting chamber 141 can be designed according to actual needs and are not specifically limited in this embodiment.

[0073] It can be understood that the liquid phase change working fluid flowing out of the condenser 130 is collected by the liquid collecting chamber 141 to reduce the accumulation of liquid phase change working fluid in the pipeline, reduce the possibility of unstable operation of the cooling system due to liquid level fluctuations, and allow the phase change working fluid to flow into the cold plate 110 more evenly, thereby improving the heat dissipation effect, reducing energy consumption, and improving the reliability of the cooling system.

[0074] In some embodiments, as Figure 1 As shown, the heat dissipation system further includes a fluid replenishing component and a fluid replenishing pump 220. The fluid replenishing component forms a fluid replenishing chamber 211 for storing the phase-change working medium. The fluid inlet of the fluid replenishing chamber 211 is connected to the inlet of the cold plate 110. The fluid replenishing pump 220 is connected to the fluid inlet of the liquid collecting chamber 141 and the fluid outlet of the fluid replenishing chamber 211, respectively, to drive the liquid phase-change working medium from the fluid replenishing chamber 211 into the liquid collecting chamber 141. It should be noted that the shape and size of the fluid replenishing chamber 211 can be designed according to actual needs and are not specifically limited in this embodiment.

[0075] It can be understood that the rehydration chamber 211 is used to store liquid phase change working fluid, ensuring that when the phase change working fluid is reduced due to evaporation or leakage, starting the rehydration pump 220 can replenish the phase change working fluid in the cooling circuit 100 in time, thereby improving the reliability and heat dissipation effect of the cooling system.

[0076] In some embodiments, the data acquisition module is further used to collect liquid level information of the liquid collecting chamber 141 , and the control module is further used to output a control signal for driving the liquid infusion pump 220 to start and stop according to the liquid level information of the liquid collecting chamber 141 .

[0077] It is understood that the liquid level information of the liquid collecting chamber 141 reflects the amount of liquid phase-change working fluid in the liquid collecting chamber 141. Specifically, if the liquid level is too high, it indicates that there is too much phase-change working fluid in the cooling circuit 100, and the refill pump 220 needs to be controlled to be paused to reduce the risk of liquid working fluid overflow or excessive pressure in the cooling system. If the liquid level is too low, there may be insufficient liquid phase-change working fluid, and the refill pump 220 needs to be controlled to be started to maintain the cooling function of the cooling system.

[0078] Exemplarily, when the liquid level information of the liquid collecting chamber 141 is lower than the fifth threshold value (i.e., the phase change working fluid in the liquid collecting chamber 141 is at a low liquid level), the control module sends a control signal to start the fluid replenishment pump 220 to replenish the phase change working fluid in the liquid collecting chamber 141 using the fluid replenishment chamber 211; when the liquid level information of the liquid collecting chamber 141 is higher than the sixth threshold value (i.e., the phase change working fluid in the liquid collecting chamber 141 is at a high liquid level), the control module sends a control signal to pause the fluid replenishment pump 220.

[0079] In some embodiments, the data acquisition module includes a third liquid level sensor, which is disposed in the liquid collecting chamber 141 and is used to monitor the liquid level in the liquid collecting chamber 141 in real time. Exemplarily, the third liquid level sensor includes but is not limited to a static pressure liquid level sensor, an ultrasonic liquid level sensor, or a capacitive liquid level sensor.

[0080] It is understandable that the third liquid level sensor is installed in the liquid collecting chamber 141, which can detect the liquid level of the phase change working medium in real time and convert it into an electrical signal containing liquid level information and transmit it to the control module so that the control module can determine whether to start or pause the liquid replenishing pump 220.

[0081] In some embodiments, as Figure 1 As shown, the cooling circuit 100 further includes an exhaust valve 150 , which is disposed between the outlet end of the condenser 130 and the inlet end of the cold plate 110 for exhausting air to the outside.

[0082] It is understood that exhaust valve 150 actively exhausts air or other non-condensable gases in cooling circuit 100 to the outside world, optimizing heat dissipation and the circulation efficiency of the phase-change fluid. Furthermore, exhaust valve 150 can help balance the pressure stability of cooling circuit 100, reduce the occurrence of air lock, and improve the performance and reliability of the cooling system.

[0083] An embodiment of the present application further provides an electronic device, comprising a heating element and the above-mentioned heat dissipation system.

[0084] It should be noted that electronic devices include devices such as servers, computers, or switches that have heating elements. Electronic devices may also include a housing, a rack, a motherboard, a CPU, a memory module, and other structures. The specific structures can be configured in a conventional manner and will not be described in detail here. It is understood that by providing a heat dissipation system, the heating elements within the electronic device can be cooled, reducing the possibility of the heating elements within the electronic device ceasing to operate due to excessive temperatures, thereby ensuring the normal operation of the electronic device.

[0085] The embodiment of the present application also provides a control method for a heat dissipation system, which is applied to the heat dissipation system as above. Figure 2 As shown, the control method of the heat dissipation system includes step 510 and step 520.

[0086] Step 510: Obtain data information of the heating element through the data acquisition module.

[0087] It is understandable that the data acquisition module includes but is not limited to temperature sensors and pressure sensors, and the data information of the heating element includes but is not limited to the actual temperature of the corresponding heating element and the pressure of the cooling circuit 100.

[0088] Step 520: Output a control signal for adjusting the negative pressure component according to the data information.

[0089] It can be understood that the data acquisition module converts the detected physical quantities into electrical signals and transmits them to the control module. The control module outputs corresponding control signals based on the obtained data information to adjust the operating state of the negative pressure component.

[0090] For example, when the actual temperature of the heating element increases, the exhaust device 122 is controlled to increase the exhaust rate to reduce the pressure in the negative pressure chamber 121 and promote the vaporization of the phase change medium; when the actual temperature of the heating element decreases, the exhaust device 122 is controlled to reduce the exhaust rate to save energy.

[0091] The control method of the heat dissipation system provided in this embodiment dynamically adjusts the boiling point of the phase-change working fluid through the data information obtained by the data acquisition module, thereby achieving dynamic adjustment of the temperature of the heating element and improving the heat dissipation efficiency and reliability.

[0092] In some embodiments, the data information of the heating element in step 510 includes the actual temperature of the heating element; and outputting a control signal for adjusting the negative pressure component according to the data information in step 520 includes:

[0093] Step 521: Compare the actual temperature with the target temperature of the heating element, and determine the variable of the exhaust rate of the exhaust device 122 according to the comparison result;

[0094] Step 522: Adjust the actual pumping rate of the pumping device 122 according to the variable of the pumping rate to obtain an adjusted pumping rate;

[0095] Step 523: Output a control signal including the adjusted pumping rate.

[0096] It should be noted that the target temperature of the heating element can be adjusted according to actual conditions, and this embodiment does not impose any specific limitation on this.

[0097] It is understandable that the variable of the pumping rate can be an increase or a decrease, and this embodiment does not impose any specific restrictions on this. Figure 3 As shown, when the actual temperature is greater than the target temperature, the adjusted pumping rate is obtained by the increase in the pumping rate and the current actual pumping rate, and a control signal including the adjusted pumping rate is output to reduce the phase change temperature of the phase change medium; when the actual temperature is less than the target temperature, the adjusted pumping rate is obtained by the decrease in the pumping rate and the current actual pumping rate, and a control signal including the adjusted pumping rate is output to increase the phase change temperature of the phase change medium; when the actual temperature is equal to the target temperature, the current actual pumping rate of the pumping device 122 is maintained.

[0098] In some embodiments, the data acquisition module includes a pressure sensor, which is disposed within the negative pressure chamber 121. The data acquisition module determines the actual pumping rate of the pumping device 122 by monitoring pressure changes within the negative pressure chamber 121 and combining the known volume and time within the negative pressure chamber 121. Of course, in other embodiments, the data acquisition module may also include a flow sensor disposed within the pumping device 122, that is, the actual pumping rate of the pumping device 122 is directly determined using the flow sensor, and this embodiment does not impose specific limitations on this.

[0099] In some embodiments, as Figure 3 As shown, in step 521, the actual temperature is compared with the target temperature of the heating element, which also includes:

[0100] determining a target pressure of the negative pressure chamber 121 according to the target temperature;

[0101] A control signal including a target pressure of the negative pressure chamber 121 is output.

[0102] It is understood that the target temperature of the heating element is to ensure that the heating element operates within a safe temperature range. The target pressure of the negative pressure chamber 121 refers to the pressure value that needs to be maintained in the negative pressure chamber 121 to achieve the target temperature, so as to ensure that the phase change working fluid can undergo phase change after heat exchange with the heating element under this pressure state.

[0103] In some embodiments, determining the target pressure of the negative pressure chamber 121 according to the target temperature includes:

[0104] Determine the phase change temperature of the phase change working fluid according to the target temperature;

[0105] The target pressure of the negative pressure chamber 121 is determined according to the phase change temperature of the phase change working medium.

[0106] It is understood that the pressure in the negative pressure chamber 121 directly affects the phase change temperature of the phase change fluid. That is, the greater the negative pressure, the lower the boiling point. Therefore, the phase change temperature of the phase change fluid is determined by the target temperature of the heating element, and the target pressure of the negative pressure chamber 121 is then determined, thereby ensuring that the phase change fluid vaporizes after heat exchange with the heating element.

[0107] In some embodiments, the phase change temperature of the phase change working fluid is determined according to the target temperature, and the following formula must be satisfied:

[0108] T=T0-a, where: T is the phase change temperature of the phase change working fluid, T0 is the target temperature of the heating element, and a is a constant.

[0109] For example, assuming a=15, the target temperature T0 of the heating element=100° C., the phase change temperature of the phase change medium T=100-15=85° C. It should be noted that the specific value of the constant a can be adjusted according to actual needs, and this embodiment does not impose any specific limitation on this.

[0110] In some embodiments, the target pressure of the negative pressure chamber 121 is determined according to the phase change temperature of the phase change working fluid, and the following formula must be satisfied:

[0111] In(P)=bc / (Td), where P is the target pressure of the negative pressure chamber 121, and b, c, and d are all constants.

[0112] For example, Figure 4 This is the phase diagram when the phase change fluid is water. Cavitation refers to the process of formation, development, and collapse of vapor or gas cavities (bubbles) within a liquid or at the liquid-solid interface when the local pressure of the liquid drops below the saturated vapor pressure. Boiling refers to the phenomenon of bubbles forming inside a liquid, rapidly expanding to the surface, and bursting when the liquid reaches a certain temperature. This embodiment mainly involves boiling, that is, the phase change temperature of the phase change fluid refers to the boiling point temperature of the phase change fluid, namely b=9.3876, c=3826.36, and d=45.47. Continuing with the above example, when T=85°C, according to In(P)=9.3876-3826.36 / (T-45.47), the target pressure P of the negative pressure chamber 121 is 60kPa. It should be noted that the specific values ​​of the constants b, c, and d can be adjusted according to actual needs and are not specifically limited in this embodiment.

[0113] In some embodiments, the control method of the heat dissipation system further includes:

[0114] Obtaining liquid level information of the negative pressure chamber 121 through a data acquisition module;

[0115] A control signal for driving the circulation pump 123 to start and stop is output according to the liquid level information of the negative pressure chamber 121 .

[0116] It is understandable that the liquid level information of the negative pressure chamber 121 reflects the amount of liquid phase change medium in the negative pressure chamber 121. That is, if the liquid level is too high, the liquid medium may overflow the air outlet of the negative pressure chamber 121 and enter the air extraction device 122, affecting the normal operation of the air extraction device 122. If the liquid level is too low, the liquid phase change medium may be insufficient, affecting the heat dissipation effect. The data acquisition module obtains the liquid level in the negative pressure chamber 121 in real time to control the start and stop of the circulation pump 123, ensuring that the liquid phase change medium can maintain an appropriate liquid level in the negative pressure chamber 121, realizing dynamic adjustment of the circulation flow of the liquid phase change medium, reducing unnecessary energy consumption, and ensuring the stability of the heat dissipation effect.

[0117] For example, when the liquid level information of the negative pressure chamber 121 is lower than a first threshold value (i.e., the liquid phase-change working fluid in the negative pressure chamber 121 is at a low level), a control signal is output to pause the circulation pump 123, causing the liquid phase-change working fluid to accumulate in the negative pressure chamber 121. When the liquid level information of the negative pressure chamber 121 is higher than a second threshold value (i.e., the liquid phase-change working fluid in the negative pressure chamber 121 is at a high level), a control signal is output to start the circulation pump 123, causing the liquid phase-change working fluid in the negative pressure chamber 121 to flow into the condenser 130 and enter the cooling cycle. It should be noted that the values ​​of the first and second threshold values ​​can be adjusted according to actual conditions, and this embodiment does not impose specific limitations on this.

[0118] In some embodiments, the data acquisition module includes a first liquid level sensor, which is disposed in the negative pressure chamber 121 and is used to monitor the liquid level in the negative pressure chamber 121 in real time. Exemplarily, the first liquid level sensor includes but is not limited to a static pressure liquid level sensor, an ultrasonic liquid level sensor, or a capacitive liquid level sensor.

[0119] In some embodiments, the control method of the heat dissipation system further includes:

[0120] Obtaining liquid level information of the liquid collecting chamber 141 through a data acquisition module;

[0121] A control signal for driving the liquid replenishing pump 220 to start and stop is output according to the liquid level information of the liquid collecting chamber 141 .

[0122] It is understood that the liquid level information of the liquid collecting chamber 141 reflects the amount of liquid phase-change working fluid in the liquid collecting chamber 141. Specifically, if the liquid level is too high, it indicates that there is too much phase-change working fluid in the cooling circuit 100, and a control signal is output to pause the liquid replenishing pump 220 to reduce the risk of liquid working fluid overflow or excessive pressure in the cooling system. If the liquid level is too low, it may lead to insufficient liquid phase-change working fluid, and a control signal is output to start the liquid replenishing pump 220 to maintain the cooling function of the cooling system.

[0123] Exemplarily, when the liquid level information of the liquid collecting chamber 141 is lower than the fifth threshold value (i.e., the phase change working fluid in the liquid collecting chamber 141 is at a low liquid level), a control signal is output to drive the fluid replenishment pump 220 to start, so as to use the fluid replenishment chamber 211 to replenish the phase change working fluid in the liquid collecting chamber 141; when the liquid level information of the liquid collecting chamber 141 is higher than the sixth threshold value (i.e., the phase change working fluid in the liquid collecting chamber 141 is at a high liquid level), a control signal is output to drive the fluid replenishment pump 220 to pause.

[0124] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, and of course it can also be implemented by hardware, but in many cases the former is a better implementation method.

[0125] like Figure 5 As shown, an embodiment of the present application also provides a computer program product, including an acquisition unit 610 and an output unit 620 for obtaining data information of a heating element; the output unit 620 is used to output a control signal for adjusting the negative pressure component according to the data information.

[0126] The computer program product provided in this embodiment outputs a control signal for adjusting the negative pressure component based on the obtained data information, thereby achieving dynamic adjustment of the temperature of the heating element and improving heat dissipation efficiency and reliability.

[0127] For the description of the features in the embodiments corresponding to the computer program product, reference can be made to the relevant description of the embodiments corresponding to the control method of the heat dissipation system, which will not be repeated here.

[0128] In some embodiments, the output unit 620 is configured to output a control signal for adjusting the negative pressure component according to the data information, specifically comprising the following steps:

[0129] Comparing the actual temperature with the target temperature of the heating element, and determining a variable of the extraction rate of the extraction device 122 according to the comparison result;

[0130] Adjusting the actual pumping rate of the pumping device 122 according to the variable of the pumping rate to obtain an adjusted pumping rate;

[0131] The output includes a control signal for the adjusted pumping rate.

[0132] In some embodiments, the output unit 620 is further configured to:

[0133] determining a target pressure of the negative pressure chamber 121 according to the target temperature;

[0134] A control signal including a target pressure of the negative pressure chamber 121 is output.

[0135] In some embodiments, the obtaining unit 610 is further used to obtain the liquid level information of the negative pressure chamber 121 through the data acquisition module; the output unit 620 is further used to output a control signal for driving the circulation pump 123 to start and stop according to the liquid level information of the negative pressure chamber 121.

[0136] In some embodiments, the acquisition unit 610 is further used to obtain the liquid level information of the liquid collecting chamber 141 through the data acquisition module; the output unit 620 is further used to output a control signal for driving the liquid infusion pump 220 to start and stop according to the liquid level information of the liquid collecting chamber 141.

[0137] An embodiment of the present application further provides a computer-readable storage medium, in which a computer program is stored. The computer program is configured to execute the steps of any of the above-mentioned embodiments of the control method for the heat dissipation system when running.

[0138] In an exemplary embodiment, the computer-readable storage medium may include, but is not limited to, various media that can store computer programs, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0139] An embodiment of the present application further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of any of the above-mentioned control method embodiments of the heat dissipation system are implemented.

[0140] An embodiment of the present application also provides another computer program product, including a non-volatile computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, it implements the steps in any of the above-mentioned control method embodiments of the heat dissipation system.

[0141] Professionals may further appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the components and steps of each example according to their functions. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0142] The above is a detailed introduction to a heat dissipation system, an electronic device, a control method for a heat dissipation system, and a program product provided by the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application 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 application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A heat dissipation system, characterized in that: include: A cooling circuit, the cooling circuit comprising a connected cold plate, a negative pressure assembly and a condenser, the cold plate being used to exchange heat with the heating element, the inlet end of the negative pressure assembly being connected to the outlet end of the cold plate, the negative pressure assembly being used to form a negative pressure environment, the condenser being used to exchange heat with the outside world, the outlet end of the condenser being connected to the inlet end of the cold plate, the air inlet end of the condenser being connected to the air outlet end of the negative pressure assembly, and the liquid inlet end of the condenser being connected to the liquid outlet end of the negative pressure assembly; A data acquisition module, at least used to collect data information of the heating element; 18. The heat dissipation controller of claim 17, wherein the heat dissipation controller is configured to control the heat dissipation in the heat dissipation chamber to control the heat dissipation in the heat dissipation chamber to move the heat dissipation in the heat dissipation chamber to a desired heat dissipation position.

2. The heat dissipation system according to claim 1, characterized in that: The data information of the heating element includes the actual temperature of the heating element, and the control signal includes the pumping rate of the pumping device.

3. The heat dissipation system according to claim 1, characterized in that: The data acquisition module is further used to collect the liquid level information of the negative pressure chamber, and the control module is used to output a control signal for driving the circulation pump to start and stop according to the liquid level information of the negative pressure chamber.

4. The heat dissipation system according to any one of claims 1 to 3, characterized in that: The cooling circuit further comprises: The liquid collecting part forms a liquid collecting cavity, the liquid inlet end of the liquid collecting cavity is communicated with the outlet end of the condenser, and the liquid outlet end of the liquid collecting cavity is communicated with the inlet end of the cold plate.

5. The heat dissipation system according to claim 4, characterized in that: Also includes: A fluid replenishing member, forming a fluid replenishing cavity for storing a phase-change working medium, wherein a fluid inlet end of the fluid replenishing cavity is connected to an inlet end of the cold plate; The liquid replenishing pump is connected to the liquid inlet end of the liquid collecting chamber and the liquid outlet end of the liquid replenishing chamber respectively, and is used to drive the liquid phase change working medium to flow from the liquid replenishing chamber into the liquid collecting chamber.

6. The heat dissipation system according to claim 5, characterized in that: The data acquisition module is further used to collect the liquid level information of the liquid collecting chamber, and the control module is further used to output a control signal for driving the liquid infusion pump to start and stop according to the liquid level information of the liquid collecting chamber.

7. The heat dissipation system according to any one of claims 1 to 3, characterized in that: The cooling circuit further comprises: The exhaust valve is arranged between the outlet end of the condenser and the inlet end of the cold plate, and is used to exhaust air to the outside.

8. An electronic device, characterized in that: include: Heating element; as well as The heat dissipation system according to any one of claims 1 to 7, wherein the heat dissipation system is used to dissipate heat from the heating element.

9. A control method for a heat dissipation system, applied to the heat dissipation system according to any one of claims 1 to 7, characterized in that: The control method includes: Obtain data information of the heating element through the data acquisition module; A control signal for adjusting the negative pressure component is output according to the data information; wherein, the control signal for adjusting the negative pressure component according to the data information output includes adjusting the exhaust rate of the exhaust device according to the comparison result of the actual temperature of the heating element and the target temperature.

10. The control method of the heat dissipation system according to claim 9, characterized in that: The data information of the heating element includes the actual temperature of the heating element; and the control signal for adjusting the negative pressure component according to the data information includes: comparing the actual temperature with the target temperature of the heating element, and determining a variable of an air extraction rate of an air extraction device according to the comparison result; Adjusting the actual pumping rate of the pumping device according to the variable of the pumping rate to obtain an adjusted pumping rate; The output includes a control signal of the adjusted pumping rate.

11. The control method of the heat dissipation system according to claim 10, characterized in that: Comparing the actual temperature with the target temperature of the heating element, the method further includes: determining a target pressure of the negative pressure chamber according to the target temperature; A control signal including a target pressure of the negative pressure chamber is output.

12. The control method of the heat dissipation system according to claim 10, characterized in that: Also includes: The liquid level information of the negative pressure chamber is obtained through the data acquisition module; and a control signal for driving the circulation pump to start and stop is output according to the liquid level information of the negative pressure chamber; and / or The liquid level information of the liquid collecting chamber is obtained through the data acquisition module; and a control signal for driving the liquid replenishment pump to start and stop is output according to the liquid level information of the liquid collecting chamber.

13. A computer program product, characterized in that include: An obtaining unit, used for obtaining data information of the heating element; An output unit is used to output a control signal for adjusting the negative pressure component according to the data information; wherein, the control signal for adjusting the negative pressure component according to the data information includes adjusting the exhaust rate of the exhaust device according to the comparison result of the actual temperature of the heating element and the target temperature.

14. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, wherein when the computer program is executed by a processor, the steps of the control method of the heat dissipation system according to any one of claims 9 to 12 are implemented.

Images