Liquid storage tank and phase change cooling performance test system

Abstract

The application provides a liquid storage tank and a phase change cooling performance test system. The liquid storage tank is used for storing the cooling medium of the phase change cooling performance test system. The liquid storage tank comprises a shell and a heat exchange module. The shell is used for storing the cooling medium and comprises an inlet and an outlet, so that the cooling medium in the shell can flow out through the outlet, and the cooling medium in the phase change cooling pipeline of the phase change cooling performance test system can flow into the shell through the inlet. The heat exchange module comprises a condenser and a cooling pipeline. The condenser is arranged in the shell. When the phase change cooling performance test system is running, after the radiator is replaced, the phase change cooling performance test system is put into operation again, the air in the phase change cooling pipeline can flow into the shell through the inlet, the air is automatically floated, the air and the cooling medium are separated, and the phase change cooling pipeline is operated without air, so that the phase change cooling pipeline does not need to be vacuumized after the heat exchanger is replaced each time.

Description

Technical Field

[0001] This invention relates to the field of phase change cooling systems, and more particularly to a liquid storage tank and a phase change cooling performance testing system. Background Technology

[0002] The research and application of phase change cold plates in cooling high heat flux density devices are receiving increasing attention. Compared with traditional cold plates that use single-phase cooling media, phase change cold plates absorb heat from the heat source during the cooling process, and undergo a transformation from liquid to gas, i.e., boiling phase change heat transfer.

[0003] Because the heat transfer mechanism of boiling phase change is complex, theoretical analysis and CFD simulations (Computational Fluid Dynamics, CFD) often cannot accurately obtain the performance of phase change cold plates. Therefore, a testing system is needed to test the performance of phase change cold plates. The internal flow channel structure design of phase change cold plates varies under different application conditions, resulting in significant differences in heat transfer performance. Therefore, multiple cold plate designs need to be tested during the design phase to obtain optimal performance.

[0004] Existing cold plate performance testing systems typically require vacuuming before adding cooling medium. Air in the system can affect its normal operation. Therefore, each time a new cold plate is used for testing, the system needs to be vacuumed again, which is a cumbersome process and increases the time required for system debugging and testing. Summary of the Invention

[0005] This application provides a liquid storage tank and a phase change cooling performance testing system, which aims to eliminate the need for vacuuming and debugging after disassembling and replacing the cold plate.

[0006] The first aspect of this application provides a liquid storage tank for storing coolant in a phase change cooling performance testing system. The liquid storage tank includes: a shell for storing cooling medium and including an inlet and an outlet spaced apart along a first direction; and a heat exchange module including a condenser and cooling pipes connected to the inlet and outlet of the condenser. The condenser is located inside the shell, and at least a portion of the cooling pipes extend outside the shell.

[0007] According to an embodiment of the first aspect of this application, an exhaust valve is provided on the housing, the exhaust valve is located on the side of the liquid inlet away from the liquid outlet, and the exhaust valve is used to exhaust air from the housing; and / or, a pressure relief valve is provided on the housing, the pressure relief valve is located on the side of the liquid inlet away from the liquid outlet, and the pressure relief valve is used to relieve pressure from the housing.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the housing has a top wall and a bottom wall disposed opposite to each other in a first direction, the bottom wall is located on the side of the liquid outlet away from the liquid inlet, and a liquid injection venting valve is provided on the bottom wall, the liquid injection venting valve being used to inject cooling medium into the housing or to discharge cooling medium from the housing.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the condenser and the top wall are spaced apart in a first direction.

[0010] According to any of the foregoing embodiments of the first aspect of this application, along the first direction, the distance between the condenser and the bottom wall is greater than the distance between the liquid inlet and the bottom wall.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the liquid storage tank further includes: a level gauge located outside the housing, with both ends of the level gauge communicating with the interior of the housing, for observing the liquid level height inside the housing.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the liquid storage tank further includes: a heat insulation layer, which is disposed covering the outer wall surface of the shell.

[0013] A second aspect of this application provides a phase change cooling performance testing system, comprising: a liquid storage tank, the liquid storage tank including a shell for storing a cooling medium and including an inlet and an outlet spaced apart along a first direction; a phase change cooling pipeline connected between the inlet and the outlet for allowing the cooling medium to flow within the phase change cooling pipeline, the phase change cooling pipeline including a first pipeline and a second pipeline, the first pipeline and the second pipeline being connected to a radiator, the end of the first pipeline away from the second pipeline being connected to the outlet, and the end of the second pipeline away from the first pipeline being connected to the inlet; a circulation device disposed within the phase change cooling pipeline to allow the cooling medium to circulate within the phase change cooling pipeline; and a heating and temperature measurement module for heating the radiator and measuring the surface temperature of the radiator.

[0014] According to an embodiment of the second aspect of this application, a circulation device is disposed in the first pipeline, and the phase change cooling pipeline further includes a third pipeline, one end of which is connected to the downstream of the circulation device of the first pipeline, and the other end is connected to the second pipeline.

[0015] According to any of the foregoing embodiments of the second aspect of this application, a first regulating valve is further included, disposed in the third pipeline and used to regulate the flow rate of the cooling medium in the third pipeline.

[0016] According to any of the foregoing embodiments of the second aspect of this application, a second regulating valve is further included, disposed in the second pipeline and located downstream of the third pipeline, for regulating the flow rate of the cooling medium in the second pipeline.

[0017] According to any of the foregoing embodiments of the second aspect of this application, the heating and temperature measuring module includes a housing, a temperature measuring component, and a heat-conducting material. The temperature measuring component includes temperature measuring heads arranged at intervals. A connecting space communicating with the outside of the housing is opened in the heat-conducting material, and a wire connected to the temperature measuring head is disposed in the connecting space.

[0018] According to any of the foregoing embodiments of the second aspect of this application, the thermally conductive material has a plurality of receiving holes on the side facing the heat sink, the plurality of receiving holes are connected to the same connecting space, a plurality of temperature measuring heads are disposed in the plurality of receiving holes, and the receiving holes and the connecting space are filled with sealant.

[0019] According to any of the foregoing embodiments of the second aspect of this application, a thermally conductive film or thermally conductive paste is disposed between the heat sink and the heating and temperature measuring module, and the thermally conductive film or thermally conductive paste covers the surface of the heat sink facing the heating and temperature measuring module.

[0020] According to any of the foregoing embodiments of the second aspect of this application, the heating and temperature measuring module further includes a heater disposed within the housing, the heater being in contact with a thermally conductive material and including a plurality of spaced heating rods, the surface of which is coated with thermally conductive paste.

[0021] According to any of the foregoing embodiments of the second aspect of this application, a cooling heater is provided between the outlet of the radiator and the liquid storage tank for heating or cooling the liquid cooling medium, so that the liquid cooling medium reaches the saturation temperature or controls its subcooling.

[0022] According to any of the foregoing embodiments of the second aspect of this application, control valves are provided at both ends of the radiator for connecting or cutting off the flow path of the cooling medium.

[0023] According to any of the foregoing embodiments of the second aspect of this application, a detection component is further included, which is disposed on the liquid storage tank and / or in the phase change cooling pipeline, and the detection component includes at least one of a mass flow meter, a temperature meter, and a pressure meter.

[0024] According to an embodiment of this application, a liquid storage tank is used to store the cooling medium of a phase change cooling performance testing system. The liquid storage tank includes a shell and a heat exchange module. The shell stores the cooling medium and includes an inlet and an outlet, allowing the cooling medium inside the shell to flow out through the outlet, while the cooling medium in the phase change cooling pipeline of the phase change cooling performance testing system can flow into the shell through the inlet. The heat exchange module includes a condenser and cooling pipelines. The condenser is disposed inside the shell and can cool the gaseous cooling medium inside the shell, causing the gaseous cooling medium to condense into a liquid cooling medium. The cooling pipelines extend outside the shell, for example, connected to a chiller outside the shell, so that the cooling pipelines are filled with chilled water to condense the gaseous cooling medium inside the shell. When the phase change cooling performance testing system is running, after the radiator is replaced, the phase change cooling performance testing system is put back into operation, and air in the phase change cooling pipeline can flow into the shell through the inlet. Furthermore, the inlet and outlet are spaced apart in the first direction. After the cooling medium enters the shell, it is stored on one side of the outlet and flows out through the outlet. Air enters the shell and is located above the cooling medium. The air automatically floats up, realizing the separation of air from the cooling medium. This enables the phase change cooling pipeline to operate without air, eliminating the need to evacuate the phase change cooling pipeline every time the heat exchanger is replaced. Attached Figure Description

[0025] The invention can be better understood from the following description of specific embodiments of the invention in conjunction with the accompanying drawings, wherein:

[0026] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals denote the same or similar features.

[0027] Figure 1 This is a schematic diagram of the structure of a liquid storage tank according to an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the structure of a phase change cooling performance testing system according to an embodiment of the present invention;

[0029] Figure 3 This is a magnified view of a portion of the heating and temperature measurement module;

[0030] Figure 4 yes Figure 3 Sectional view of section AA;

[0031] Figure 5 yes Figure 4 Sectional view of section BB;

[0032] Figure 6 This is provided in another embodiment. Figure 4 Sectional view of section BB;

[0033] Figure 7 yes Figure 4 A magnified view of a portion of region X in the middle;

[0034] Figure 8 yes Figure 4 A sectional view of section CC.

[0035] in:

[0036] 10. Liquid storage tank; 11. Cooling medium;

[0037] 100. Shell; 101. Top wall; 102. Bottom wall;

[0038] 110. Liquid inlet; 120. Liquid outlet; 130. Air vent valve; 140. Pressure relief valve; 150. Liquid injection and venting valve; 160. Liquid level gauge; 170. Insulation layer;

[0039] 180. Heat exchange module; 181. Condenser; 182. Cooling piping; 183. Piping flange;

[0040] 20. Phase Change Cooling Performance Testing System

[0041] 200. Phase change cooling pipeline; 201. First pipeline; 202. Second pipeline; 203. Third pipeline;

[0042] 210. Circulation device; 220. First regulating valve; 230. Second regulating valve; 240. Cooling heater; 250. Control valve; 260. Detection assembly; 270. Drying filter;

[0043] 30. Heating and temperature measurement module;

[0044] 300. Outer casing;

[0045] 310. Temperature sensing assembly; 311. Temperature sensing head;

[0046] 320. Thermally conductive material; 321. Connecting space; 322. Receiving hole; 323. Installation space;

[0047] 330. Heating rod;

[0048] 40. Radiator;

[0049] Z, First direction. Detailed Implementation

[0050] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0052] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0053] This application provides a liquid storage tank and a phase change cooling performance testing system. The following description, in conjunction with the accompanying drawings, will illustrate various embodiments of the liquid storage tank and the phase change cooling performance testing system.

[0054] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a liquid storage tank according to an embodiment of the present invention.

[0055] like Figure 1As shown, a first aspect embodiment of this application provides a liquid storage tank 10 for storing coolant in a phase change cooling performance testing system. The liquid storage tank 10 includes: a shell 100 for storing cooling medium 11 and including an inlet 110 and an outlet 120 spaced apart along a first direction Z; and a heat exchange module 180 including a condenser 181 and cooling pipes 182 connected to the inlet and outlet of the condenser 181. The condenser 181 is located inside the shell 100, and at least a portion of the cooling pipes 182 extends outside the shell 100.

[0056] According to an embodiment of this application, the liquid storage tank 10 is used to store the cooling medium 11 of a phase change cooling performance testing system. The liquid storage tank 10 includes a shell 100 and a heat exchange module 180. The shell 100 is used to store the cooling medium 11 and includes an inlet 110 and an outlet 120, so that the cooling medium 11 in the shell 100 can flow out through the outlet 120, and the cooling medium 11 in the phase change cooling pipeline 200 of the phase change cooling performance testing system can flow into the shell 100 through the inlet 110. The heat exchange module 180 includes a condenser 181 and a cooling pipeline 182. The condenser 181 is disposed in the shell 100 and can cool the gaseous cooling medium 11 in the shell 100 so that the gaseous cooling medium 11 condenses into a liquid cooling medium 11. Cooling pipe 182 extends outside the housing 100, for example, by connecting to a chiller outside the housing 100, thereby filling the cooling pipe 182 with chilled water to condense the gaseous cooling medium 11 inside the housing 100. When the phase change cooling performance testing system is running, after the radiator 40 is replaced, the phase change cooling performance testing system is put back into operation. Air inside the phase change cooling pipe 200 can flow into the housing 100 through the liquid inlet 110. The liquid inlet 110 and the liquid storage port are spaced apart in the first direction Z. After the cooling medium 11 enters the housing 100, it is stored on one side of the liquid outlet 120 and flows out through the liquid outlet 120. Air enters the housing 100 and is located above the cooling medium 11. The air automatically rises, achieving separation of air from the cooling medium, thereby enabling the phase change cooling pipe 200 to operate without air, eliminating the need to evacuate the phase change cooling pipe 200 after each heat exchanger replacement.

[0057] In the above embodiments, the housing 100 is a rectangular box, but the embodiments of the present invention are not limited thereto. In other embodiments, the housing 100 may also have a cylindrical or polyhedral structure, and the specific shape and size of the housing 100 may be selected according to the actual shape and size of the heat exchange module 180, the size of the installation area, the capacity of the cooling medium 11, etc.

[0058] Optionally, a pipe flange 183 is provided on the cooling pipe 182 for connection to a chiller outside the housing 100. The flow rate and temperature of the chiller are adjustable to meet different condensation requirements.

[0059] Optionally, the internal space of the casing 100 is divided into a liquid region and a non-liquid region. The region containing the liquid cooling medium 11 is the liquid region, and the non-liquid region is the upper part of the liquid region. The condenser 181 and condensing pipes are located in the non-liquid region to condense the gaseous cooling medium 11, liquefying it into a liquid state. Air will rise to the non-liquid region to achieve automatic system balance. After system balance, the presence of air will not affect the condensation heat exchange effect of the condenser 181, nor will it affect the operation of other components in the system, because as the system operates, all the air in the system will rise and accumulate in the non-liquid region.

[0060] Optionally, the heat exchange module 180 has system pressure stabilization and pressure regulation functions. By increasing the cooling water flow rate in the cooling pipe 182 or decreasing the cooling water temperature, the heat exchange effect of the condenser 181 can be enhanced, thereby reducing the internal pressure of the shell 100. Conversely, by decreasing the cooling water flow rate in the cooling pipe 182 or increasing the cooling water temperature, the heat exchange effect of the condenser 181 can be weakened, thereby increasing the internal pressure of the shell 100.

[0061] In some optional embodiments, the housing 100 is provided with an exhaust valve 130, which is located on the side of the inlet 110 opposite to the outlet 120, and is used to exhaust air from the cavity inside the housing 100; and / or, the housing 100 is provided with a pressure relief valve 140, which is located on the side of the inlet 110 opposite to the outlet 120, and is used to relieve pressure from the cavity inside the housing 100.

[0062] In these optional embodiments, when liquid cooling medium 11 is filled into the housing 100, the vent valve 130 is opened to allow gas inside the housing 100 to be discharged through the vent valve 130, ensuring that the cooling medium 11 is successfully filled and preventing excessive gas pressure inside the housing 100 from making it difficult to fill the liquid cooling medium 11. When the pressure inside the housing 100 is too high, the pressure relief valve 140 is opened to release the pressure inside the housing 100, ensuring the pressure inside the housing 100 is safe.

[0063] In some optional embodiments, the housing 100 has a top wall 101 and a bottom wall 102 disposed opposite to each other in a first direction Z. The bottom wall 102 is located on the side of the liquid outlet 120 away from the liquid inlet 110. A liquid injection venting valve 150 is provided on the bottom wall 102. The liquid injection venting valve 150 is used to inject cooling medium 11 into the housing 100 or to discharge cooling medium 11 from the housing 100.

[0064] In these optional embodiments, when the liquid storage tank 10 is put into operation, liquid cooling medium 11 is injected into the housing 100 through the liquid injection vent valve 150. When it is necessary to vent the cooling medium 11 in the housing 100, the liquid injection vent valve 150 is opened to discharge the cooling medium 11 in the housing 100.

[0065] Optionally, the condenser 181 and the top wall 101 are spaced apart in the first direction Z, forming a certain space between the condenser 181 and the top wall 101. When air enters the shell, the air rises to the space between the condenser 181 and the top wall 101, preventing air from accumulating around the condenser 181 and affecting the heat exchange effect between the condenser 181 and the gaseous cooling medium 11.

[0066] Optionally, along the first direction Z, the distance between the condenser 181 and the bottom wall 102 is greater than the distance between the liquid inlet 110 and the bottom wall 102. That is, the condenser 181 is set higher than the liquid inlet 110 in the first direction Z. When the gaseous cooling medium 11 and air enter the shell through the liquid inlet 110, the gaseous cooling medium 11 and air float up. The air floats up to the area between the condenser 181 and the top wall 101, and the gaseous cooling medium 11 floats up to the vicinity of the condenser 181, thereby realizing heat exchange between the gaseous cooling medium 11 and the condenser 181.

[0067] In some optional embodiments, the liquid storage tank 10 further includes a level gauge 160 located outside the housing 100, with both ends of the level gauge 160 communicating with the interior of the housing 100 for observing the liquid level height inside the housing 100.

[0068] In these alternative embodiments, the two ends of the level gauge 160 are in communication with the interior of the housing 100, so that the cooling medium 11 inside the housing 100 can enter the level gauge 160, thereby allowing the level height of the liquid cooling medium 11 inside the housing 100 to be observed through the level gauge 160.

[0069] In some optional embodiments, the liquid storage tank 10 further includes an insulation layer 170, which covers the outer wall surface of the shell 100.

[0070] In these alternative embodiments, the insulation layer 170 surrounds the outer shell 100 to prevent heat from being conducted from inside the shell 100 to the outside, thereby reducing heat leakage from the liquid storage tank 10 and reducing the heat balance calculation error of the phase change cooling performance test system.

[0071] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a phase change cooling performance testing system according to an embodiment of the present invention.

[0072] like Figure 2As shown, a second aspect of this application provides a phase change cooling performance testing system 20, comprising: a liquid storage tank 10, the liquid storage tank 10 including a shell 100, the shell 100 for storing cooling medium 11 and including an inlet 110 and an outlet 120 spaced apart along a first direction Z; a phase change cooling pipeline 200, connected between the inlet 110 and the outlet 120 and used to allow the cooling medium 11 to flow within the phase change cooling pipeline 200, the phase change cooling pipeline 200 including a first pipeline 201 and... The second pipe 202 connects the first pipe 201 and the second pipe 202 to the radiator 40. The end of the first pipe 201 away from the second pipe 202 is connected to the liquid outlet 120, and the end of the second pipe 202 away from the first pipe 201 is connected to the liquid inlet 110. The circulation device 210 is installed in the phase change cooling pipe 200 to allow the cooling medium 11 to circulate in the phase change cooling pipe 200. The heating and temperature measuring module 30 is used to heat the radiator 40 and measure the surface temperature of the radiator 40.

[0073] According to an embodiment of this application, the phase change cooling performance testing system 20 includes a liquid storage tank 10, a phase change cooling pipeline 200, a circulation device 210, and a heating and temperature measurement module 30. The liquid storage tank 10 includes a shell 100 for storing cooling medium 11 and includes an inlet 110 and an outlet 120, allowing the cooling medium 11 within the shell 100 to flow out through the outlet 120 into the first pipeline 201. The cooling medium 11 flows through the radiator 40 and into the second pipeline 202, then flows back into the shell 100 through the inlet 110, forming a closed loop. The circulation device 210 is installed within the phase change cooling pipeline 200 to drive the cooling medium 11 to circulate within the loop. The heating and temperature measurement module 30 heats the radiator 40. The cooling medium 11 within the radiator 40 absorbs heat and undergoes a phase change from liquid to gas, forming a gas-liquid mixture. This mixture flows into the storage tank 10, where the gaseous phase-change cooling medium 11 is cooled into a liquid state by the condenser 181, accumulating in the liquid area of ​​the storage tank 10, thus achieving the circulation of the cooling medium 11. The heating and temperature measurement module 30 integrates heating and temperature measurement functions, providing heat load to the radiator 40 while directly measuring its temperature. This directly reflects the temperature distribution on the surface of the radiator 40, allowing for a more accurate comparison of the performance of radiators 40 with different designs, and obtaining the flow resistance and heat transfer capacity performance of the radiator 40. When the phase change cooling performance testing system 20 is running, after replacing the radiator 40 with one of different design specifications, the system is put back into operation. During the replacement process, the air mixed into the phase change cooling pipeline 200 can flow into the housing 100 through the liquid inlet 110. The liquid inlet 110 and the liquid storage port are spaced apart in the first direction Z. After the cooling medium 11 enters the housing 100, it is stored on one side of the liquid outlet 120 and flows out through the liquid outlet 120. Air enters the housing 100 and is located above the cooling medium 11. The air automatically rises, achieving separation between the air and the cooling medium. This allows the phase change cooling pipeline 200 to operate without air, meaning that after each replacement of the radiator 40, there is no need to evacuate the phase change cooling pipeline 200, allowing for rapid operation.

[0074] Optionally, the circulation device 210 can be a mechanism that enables the cooling medium 11 to circulate in the phase change cooling pipeline 200, such as a circulation pump, pressure pump, etc.

[0075] Optionally, the cooling medium 11 located inside the housing 100 is configured to cover the liquid outlet 120 but not the liquid inlet 110. By reasonably setting the liquid level height and the heights of the liquid inlet 110 and the liquid outlet 120, the cooling medium 11 can circulate smoothly in the phase change cooling performance testing system 20.

[0076] Optionally, the radiator 40 includes a phase change cooling plate. The internal flow channel structure design of the phase change cooling plate is different for different application conditions, and the heat exchange performance of the cooling plate varies greatly. During the design phase, it is necessary to test various cooling plate designs to obtain the optimal performance. Therefore, the phase change cooling performance testing system 20 provided in this application can be used to test various phase change cooling plates. After replacing the phase change cooling plate, there is no need to vacuum the phase change cooling pipeline 200, and it can be put into operation quickly.

[0077] Optionally, the cooling medium 11 used in the phase change cooling performance testing system 20 has a boiling point between 45℃ and 60℃ at normal pressure, and is therefore liquid at room temperature. At room temperature, the liquid phase change cooling medium 11 is added into the housing 100 through the injection vent valve 150 using an injection device. The system does not need to be evacuated before injection; during the injection process, opening the vent valve 130 allows some air to be expelled from the system, ensuring smooth injection of the liquid phase change cooling medium 11. The gaseous density of the phase change cooling medium 11 is greater than that of air, causing air to rise and remain above the gaseous cooling medium 11. Therefore, when the vent valve 130 is opened, only air is expelled, while the gaseous cooling medium 11 remains within the housing 100.

[0078] Optionally, the phase change cooling pipe 200 can be insulated to reduce heat loss from the system and decrease errors in heat balance calculations. For example, the phase change cooling pipe 200 can be wrapped with insulation material.

[0079] In some alternative embodiments, the circulation device 210 is disposed in the first pipeline 201, and the phase change cooling pipeline 200 further includes a third pipeline 203, one end of which is connected to the downstream of the circulation device 210 of the first pipeline 201, and the other end is connected to the second pipeline 202.

[0080] In these optional embodiments, the third pipe 203 is a bypass pipe. By adding the third pipe 203 and connecting it downstream of the circulation device 210 of the first pipe 201 and between the second pipe 202, the cooling medium 11 can be diverted, thereby regulating the flow rate of the cooling medium 11 flowing into the radiator 40, so as to regulate the flow rate of the cooling medium 11 in the radiator 40.

[0081] For example, optionally, the phase change cooling performance testing system 20 also includes a first regulating valve 220, which is installed in the third pipeline 203 and used to regulate the flow rate of the cooling medium 11 in the third pipeline 203. By regulating the flow rate of the cooling medium 11 in the third pipeline 203 through the first regulating valve 220, the flow rate of the cooling medium 11 flowing into the radiator 40 can be regulated, so as to achieve precise control of the flow rate of the cooling medium 11 flowing into the radiator 40 and improve the accuracy of the phase change cooling performance test.

[0082] In some optional embodiments, the phase change cooling performance testing system 20 further includes a second regulating valve 230, which is disposed in the second pipeline 202 and located downstream of the third pipeline 203, for regulating the flow rate of the cooling medium 11 in the second pipeline 202.

[0083] In these optional embodiments, a second regulating valve 230 is installed downstream of the third pipe 203 in the second pipe 202. The second regulating valve 230 can regulate the flow rate of the cooling medium 11 downstream of the third pipe 203 in the second pipe 202, thereby regulating the flow rate of the cooling medium 11 flowing into the radiator 40. This achieves precise control of the flow rate of the cooling medium 11 flowing into the radiator 40, further improving the accuracy of phase change cooling performance testing. The precise coordination of the first regulating valve 220 and the second regulating valve 230 further enhances the accuracy of flow rate control of the cooling medium 11 flowing into the radiator 40, improving the accuracy of phase change cooling performance testing.

[0084] Optionally, the circulation device 210 includes a variable frequency pump with stepless speed adjustment, thereby making the flow rate of the circulation device 210 continuously adjustable, thus enabling precise control of the flow rate in the phase change cooling pipeline 200. The circulation device 210 works in conjunction with the first regulating valve 220 and the second regulating valve 230 to improve the precision control of the flow rate of the cooling medium 11 flowing into the radiator 40. Alternatively, when the circulation device 210 includes a variable frequency pump, the first regulating valve 220 and / or the second regulating valve 230 can be omitted to reduce the number of regulating valves and still achieve precise control of the flow rate in the phase change cooling pipeline 200.

[0085] Please refer to the following: Figures 2 to 7 , Figure 3 This is a magnified view of a portion of the heating and temperature measurement module; Figure 4 yes Figure 3 Sectional view of section AA; Figure 5 yes Figure 4 Sectional view of section BB; Figure 6 This is provided in another embodiment. Figure 4 Sectional view of section BB; Figure 7 yes Figure 4 A magnified view of a portion of region X. Figure 6 The middle conductor is not shown in order to illustrate the temperature measuring head 311.

[0086] like Figures 2 to 7As shown, in some optional embodiments, the heating and temperature measuring module 30 includes a housing 300, a temperature measuring component 310, and a heat-conducting material 320. The temperature measuring component 310 includes temperature measuring heads 311 spaced apart. The heat-conducting material 320 has a connecting space 321 that communicates with the outside of the housing 300. The wires connected to the temperature measuring heads 311 are disposed in the connecting space 321.

[0087] In these optional embodiments, heat is conducted to the radiator 40 through the thermally conductive material 320, thereby heating the radiator 40. Multiple spaced temperature sensors 311 can measure the temperature at multiple locations on the surface of the radiator 40, obtaining the temperature distribution on the surface of the radiator 40, thus allowing for a more accurate comparison of the performance of radiators 40 with different designs. Multiple wires connecting the multiple temperature sensors 311 are arranged within a connecting space 321, sharing the space to reduce the wiring space and thus reduce the impact on the thermally conductive material 320's heat transfer load, improving the thermal conductivity of the material 320. For example, nine temperature sensors 311 can be used, arranged in groups of three, side-by-side. The extension direction of the connecting space 321 is consistent with the side-by-side direction of each group of temperature sensors 311, i.e., three connecting spaces 321 are provided, with the wires of each group of temperature sensors 311 located within the same connecting space 321. The number of temperature measuring heads 311 is not limited to this; the number and distribution of temperature measuring heads 311 can be adjusted according to actual measurement needs.

[0088] Optionally, the thermally conductive material 320 may include pure copper, which has excellent thermal conductivity and can be used as the body material of the heating and temperature sensing module 30. The thermally conductive material 320 may also be other materials with excellent thermal conductivity, such as thermally conductive metals or thermally conductive non-metals.

[0089] Optionally, the material of the outer casing 300 may include thermal insulation material to reduce heat loss from the thermally conductive material 320, thereby maximizing the transfer of heat from the heater to the radiator 40 and reducing heating load error.

[0090] Optionally, the temperature sensor 311 and the heat sink 40 are arranged in contact to improve the measurement accuracy of the temperature sensor 311.

[0091] In some optional embodiments, the thermally conductive material 320 has a plurality of receiving holes 322 on the side facing the heat sink 40. The plurality of receiving holes 322 are connected to the same connecting space 321. A plurality of temperature measuring heads 311 are disposed in the plurality of receiving holes 322. The receiving holes 322 and the connecting space 321 are filled with sealant.

[0092] In these optional embodiments, sealant is filled into the receiving hole 322 and the connecting space 321. After the sealant cures, it fixes the temperature measuring head 311, making the temperature measuring head 311 stably positioned within the receiving hole 322, thus improving the temperature measurement stability and accuracy of the temperature measuring head 311. The cured sealant has a certain elasticity. When the temperature measuring head 311 is set and the sealant is filled, the temperature measuring head 311 protrudes above the surface of the heating temperature measuring module 30 facing the heat sink 40. When the heating temperature measuring module 30 is assembled and pressed tightly against the surface of the heat sink 40, the temperature measuring head 311 is forced to be flush with the contact surface between the heating temperature measuring module 30 and the heat sink 40 due to the pressure from the surface of the heat sink 40. The sealant also exerts a certain compressive force on the temperature measuring head 311, allowing the temperature measuring head 311 to make close contact with the surface of the heat sink 40, thereby achieving accurate measurement of the surface temperature of the heat sink 40. For example, when setting the temperature measuring head 311 and the sealant, the temperature measuring head 311 is set 0.5mm to 1.5mm higher than the surface of the heating temperature measuring module 30 facing the radiator 40, so that the temperature measuring head 311 is higher than the surface of the heating temperature measuring module 30 facing the radiator 40.

[0093] In some optional embodiments, a thermally conductive film or thermal paste is disposed between the heat sink 40 and the heating and temperature measuring module 30, and the thermally conductive film or thermal paste covers the surface of the heat sink 40 facing the heating and temperature measuring module 30.

[0094] In these optional embodiments, after covering the surface of the heat sink 40 with a thermally conductive film or thermal paste, the uneven surface of the heat sink 40 is covered by the thermally conductive film or thermal paste. The heat sink 40 contacts the surface of the heating and temperature sensing module 30 through the thermally conductive film or thermal paste. The contact surface between the thermally conductive film or thermal paste and the heating and temperature sensing module 30 is smoother, resulting in better contact and reducing the thermal resistance of the contact surface, thereby improving the heating effect of the heating and temperature sensing module 30 on the heat sink 40. For example, the thermally conductive film or thermal paste includes thermally conductive silicone grease, which has good thermal conductivity.

[0095] Please refer to the following: Figures 2 to 8 , Figure 8 yes Figure 4 A sectional view of section CC. Figure 8 The heater is not shown in order to illustrate the installation space 323.

[0096] like Figures 2 to 8 As shown, in some optional embodiments, the heating and temperature measuring module 30 further includes a heater disposed within the housing 300. The heater is in contact with the thermally conductive material 320 and includes a plurality of spaced heating rods 330, the surface of which is coated with thermally conductive paste.

[0097] In these optional embodiments, the heating amount of the heating rod 330 can be conducted through the thermally conductive material 320 and then contacted with the heat sink 40 or the thermally conductive film through the heating temperature measuring module 30, thereby heating the heat sink 40. Multiple heating rods 330 are spaced apart to increase the heating area, improve heat conduction efficiency and area, and make the surface of the heat sink 40 more uniformly heated. Optionally, multiple heating rods 330 are evenly spaced to further improve the heat conduction uniformity of the heating temperature measuring module 30. Thermal paste is applied to the surface of the heating rod 330, allowing it to contact the thermally conductive material 320, avoiding gaps between the heating rod 330 and the thermally conductive material 320 that could lead to high thermal resistance, and improving the thermal conductivity between the heater and the thermally conductive material 320. Of course, other forms of thermally conductive materials can also be applied to the surface of the heating rod 330.

[0098] Optionally, an installation space 323 is formed within the thermally conductive material 320, and the heating rod 330 is disposed within the installation space 323 to realize the heating function of the heating and temperature measurement module 30. Optionally, multiple installation spaces 323 are spaced apart, and multiple heating rods 330 are located in each installation space 323. Optionally, the multiple installation spaces 323 are evenly spaced. Optionally, the installation space 323 extends through the thermally conductive material 320 in its extending direction to further increase the heating area.

[0099] Optionally, the diameter of the heating rod 330 is less than or equal to 5mm, which can improve the problem of uneven heat load density caused by the excessive diameter of the heating rod 330, improve the uniformity of heat load density of the heating and temperature measuring module 30, and improve the heating effect on the radiator 40.

[0100] In some optional embodiments, a cooling heater 240 is provided between the radiator 40 and the outlet 120 of the liquid storage tank 10 for heating or cooling the liquid cooling medium 11, so that the liquid cooling medium 11 reaches the saturation temperature or controls its subcooling.

[0101] In these alternative embodiments, the liquid cooling medium 11 is cooled or heated by the cooling heater 240 to control the supercooling of the liquid cooling medium 11, thereby enabling performance testing of the radiator 40 under different supercooling conditions.

[0102] Optionally, a cooling heater 240 is disposed between the circulation device 210 and the radiator 40.

[0103] In some alternative embodiments, control valves 250 are provided at both ends of the radiator 40 for connecting or disconnecting the flow path of the cooling medium 11.

[0104] In these alternative embodiments, when replacing the radiator 40, the control valves 250 at both ends of the radiator 40 are shut off to prevent leakage of the cooling medium 11 in the system. Therefore, the loss of cooling medium 11 in the system is minimal after replacing the radiator 40. After replacing the radiator 40, the control valves 250 at both ends are opened, and the system can be quickly put into operation and relevant tests without vacuuming or refilling. For example, the control valves 250 may include ball valves or quick-release self-sealing joints.

[0105] In some optional embodiments, the phase change cooling performance testing system 20 further includes a detection component 260 disposed on the liquid storage tank 10 and / or in the phase change cooling pipeline 200, and the detection component 260 includes at least one of a mass flow meter, a temperature meter, and a pressure meter.

[0106] In these optional embodiments, a mass flow meter is used to measure the mass flow rate of the cooling medium 11, a temperature gauge is used to test the temperature of the cooling medium 11, and a pressure gauge is used to test the pressure of the cooling medium 11. Optionally, a mass flow meter is installed in the first pipeline 201 and between the circulation device 210 and the radiator 40. Optionally, a mass flow meter is installed between the circulation device 210 and the cooling heater 240. Optionally, a temperature gauge and a pressure gauge are installed between the cooling heater 240 and the radiator 40. Optionally, a temperature gauge, a pressure gauge, and a sight glass are installed between the radiator 40 and the liquid inlet 110, the sight glass being used to observe the liquid and gaseous flow of the cooling medium 11. Optionally, a pressure gauge is installed on the housing 100 to monitor the pressure inside the housing 100. Optionally, a temperature gauge is installed on both the cooling pipeline 182 connected to the inlet and outlet of the condenser 181 to monitor the cooling water temperature. Optionally, a mass flow meter is installed on the cooling pipe 182 to measure the mass flow rate of the cooling water in the cooling pipe 182. The use of the temperature meter and the mass flow meter can calculate the heat carried away by the cooling water. This heat can be used to calculate the balance of the inflow and outflow heat of the entire system.

[0107] The embodiments of the present invention do not limit the specific form of the detection component 260. The detection component 260 can be any type of sensor capable of collecting temperature, pressure and mass flow rate.

[0108] Optionally, the phase change cooling performance testing system 20 also includes a dryer filter 270, which is disposed between the circulation device 210 and the liquid outlet 120. It is used to filter and absorb impurities and moisture that may be contained in the liquid cooling medium 11, purify the liquid cooling medium 11, and avoid affecting the functions of the circulation device 210 and the radiator 40.

[0109] This invention can be implemented in other specific forms without departing from its spirit and essential characteristics. Therefore, the present embodiments are to be considered exemplary rather than limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and all changes falling within the meaning and scope of the claims and their equivalents are thus included within the scope of the invention. Furthermore, different technical features appearing in different embodiments can be combined to achieve beneficial effects. Those skilled in the art, based on a study of the drawings, specification, and claims, should be able to understand and implement other variations of the disclosed embodiments.

Claims

1. A liquid storage tank (10) for storing the cooling medium (11) of a phase change cooling performance testing system (20), characterized in that, The liquid storage tank (10) includes: A housing (100) for storing the cooling medium (11) and including an inlet (110) and an outlet (120) spaced apart along a first direction (Z); The heat exchange module (180) includes a condenser (181) and a cooling pipe (182) connected to the inlet and outlet of the condenser (181), the condenser (181) being located inside the housing (100), and at least a portion of the cooling pipe (182) extending outside the housing (100).

2. The liquid storage tank according to claim 1, characterized in that, An exhaust valve (130) is provided on the housing (100), the exhaust valve (130) is located on the side of the liquid inlet (110) away from the liquid outlet (120), and the exhaust valve (130) is used to exhaust air from the housing (100); and / or, a pressure relief valve (140) is provided on the housing (100), the pressure relief valve (140) is located on the side of the liquid inlet (110) away from the liquid outlet (120), and the pressure relief valve (140) is used to relieve pressure on the housing (100).

3. The liquid storage tank according to claim 1, characterized in that, The housing (100) has a top wall (101) and a bottom wall (102) disposed opposite to each other in the first direction (Z). The bottom wall (102) is located on the side of the liquid outlet (120) away from the liquid inlet (110). A liquid injection vent valve (150) is provided on the bottom wall (102). The liquid injection vent valve (150) is used to inject cooling medium (11) into the housing (100) or to discharge cooling medium (11) from the housing (100).

4. The liquid storage tank according to claim 3, characterized in that, The condenser (181) and the top wall (101) are spaced apart in the first direction (Z); and / or, Along the first direction (Z), the distance between the condenser (181) and the bottom wall (102) is greater than the distance between the liquid inlet (110) and the bottom wall (102).

5. The liquid storage tank according to any one of claims 1 to 4, characterized in that, Also includes: A level gauge (160) is located outside the housing (100), and both ends of the level gauge (160) are connected to the inside of the housing (100) for observing the liquid level height inside the housing (100); And / or, Also includes: An insulation layer (170) is provided to cover the outer wall surface of the shell (100).

6. A phase change cooling performance testing system, characterized in that, include: The liquid storage tank (10) includes a shell (100) for storing cooling medium (11) and includes an inlet (110) and an outlet (120) spaced apart along a first direction (Z). A phase change cooling pipe (200) is connected between the liquid inlet (110) and the liquid outlet (120) and is used to allow the cooling medium (11) to flow in the phase change cooling pipe (200). The phase change cooling pipe (200) includes a first pipe (201) and a second pipe (202). The first pipe (201) and the second pipe (202) are used to connect a radiator (40). The end of the first pipe (201) away from the second pipe (202) is connected to the liquid outlet (120), and the end of the second pipe (202) away from the first pipe (201) is connected to the liquid inlet (110). A circulation device (210) is provided in the phase change cooling pipeline (200) to allow the cooling medium (11) to circulate in the phase change cooling pipeline (200); The heating and temperature measurement module (30) is used to heat the radiator (40) and measure the surface temperature of the radiator (40).

7. The phase change cooling performance testing system according to claim 6, characterized in that, The circulation device (210) is disposed in the first pipeline (201). The phase change cooling pipeline (200) further includes a third pipeline (203). One end of the third pipeline (203) is connected to the downstream of the circulation device (210) of the first pipeline (201), and the other end is connected to the second pipeline (202).

8. The phase change cooling performance testing system according to claim 7, characterized in that, It also includes a first regulating valve (220), which is disposed in the third pipeline (203) and used to regulate the flow rate of the cooling medium (11) in the third pipeline (203).

9. The phase change cooling performance testing system according to claim 7, characterized in that, It also includes a second regulating valve (230), which is disposed in the second pipeline (202) and located downstream of the third pipeline (203) for regulating the flow rate of the cooling medium (11) in the second pipeline (202).

10. The phase change cooling performance testing system according to claim 6, characterized in that, The heating and temperature measuring module (30) includes a housing (300), a temperature measuring component (310), and a thermally conductive material (320). The temperature measuring component (310) includes temperature measuring heads (311) spaced apart. The thermally conductive material (320) has a connecting space (321) that communicates with the outside of the housing (300). The wire connected to the temperature measuring head (311) is disposed in the connecting space (321).

11. The phase change cooling performance testing system according to claim 10, characterized in that, The thermally conductive material (320) has multiple receiving holes (322) on the side facing the heat sink (40). The multiple receiving holes (322) are connected to the same connecting space (321). Multiple temperature measuring heads (311) are disposed in the multiple receiving holes (322). The receiving holes (322) and the connecting space (321) are filled with sealant.

12. The phase change cooling performance testing system according to claim 10, characterized in that, A thermally conductive film or thermally conductive paste is disposed between the heat sink (40) and the heating and temperature measuring module (30), and the thermally conductive film or thermally conductive paste covers the surface of the heat sink (40) facing the heating and temperature measuring module (30).

13. The phase change cooling performance testing system according to claim 10, characterized in that, The heating and temperature measurement module (30) also includes a heater disposed inside the housing (300). The heater is in contact with the thermally conductive material (320) and includes a plurality of spaced heating rods (330). The surface of the heating rods (330) is coated with thermally conductive paste.

14. The phase change cooling performance testing system according to any one of claims 6 to 13, characterized in that, A cooling heater (240) is provided between the radiator (40) and the liquid outlet (120) of the liquid storage tank (10) for heating or cooling the liquid cooling medium (11) to bring the liquid cooling medium (11) to saturation temperature or control its subcooling; and / or, The radiator (40) is equipped with control valves (250) at both ends for connecting or disconnecting the flow path of the cooling medium (11); and / or, The phase change cooling performance testing system further includes a detection component (260), which is disposed on the liquid storage tank (10) and / or in the phase change cooling pipeline (200). The detection component (260) includes at least one of a mass flow meter, a temperature meter, and a pressure meter.

Images