A cooling system with single-phase and two-phase heat exchange functions

Abstract

This application provides a cooling system with single-phase and two-phase heat exchange functions, including a water-cooled refrigeration module, a single-phase flow circulating cooling module, and a two-phase flow circulating cooling module. The water-cooled refrigeration module is connected to the first liquid storage component of the single-phase flow circulating cooling module through a water-cooled refrigeration outlet pipe and to a cooling plate heat exchanger 33 through a water-cooled refrigeration inlet pipe. The first liquid storage component is connected to the cooling plate heat exchanger 33 through a cooling plate heat exchanger 33 inlet pipe, forming a closed-loop heat exchange path. The single-phase module is suitable for low to medium heat flux density conditions and is connected to the load through single-phase liquid supply and return pipes; the two-phase module is suitable for high heat flux density scenarios and is connected to the load through two-phase liquid supply and return pipes. The cooling system of this application can flexibly switch or connect the two heat exchange methods in parallel according to the actual load, achieving efficient and stable thermal management and is suitable for various operating conditions.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology for electronic devices, and in particular to a cooling system with single-phase and two-phase heat exchange functions. Background Technology

[0002] With the rapid development of electronic technology, electronic devices are evolving towards higher power and higher integration, placing higher demands on their heat dissipation and temperature control systems. Water cooling systems, due to their simple structure and high heat exchange efficiency, are widely used in various scenarios requiring thermal management, such as lithium batteries and lasers. However, traditional single-phase water cooling systems mainly rely on the sensible heat capacity of the liquid for heat dissipation. When the heat flux density of electronic devices is high, the heat that a single-phase flow can handle is limited, making it difficult to meet the temperature control requirements under high heat loads. In contrast, two-phase flow cooling systems utilize the latent heat transfer during the phase change of the working fluid, significantly improving heat exchange efficiency and making them particularly suitable for high heat flux density conditions. However, two-phase flow systems are prone to changes in the gas-liquid ratio when the heat load fluctuates, which may cause system instability and affect cooling performance. In practical applications, single-phase cooling systems often use low-cost cooling media such as ethylene glycol solution and deionized water, while two-phase cooling systems often use Freon refrigerants such as R134a, which are relatively more expensive. Therefore, in practical thermal management applications, different cooling equipment needs to be selected based on the operating characteristics and heat load requirements of the equipment. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. This application provides a cooling system with both single-phase and two-phase heat exchange functions, which can simultaneously integrate cooling systems with both single-phase and two-phase heat exchange functions to meet cooling requirements under different heat densities.

[0004] A cooling system with single-phase and two-phase heat exchange functions according to an embodiment of this application includes:

[0005] Water-cooled refrigeration module, the water-cooled refrigeration module including water-cooled refrigeration outlet pipe and water-cooled refrigeration inlet pipe;

[0006] A single-phase flow circulating cooling module includes a first liquid storage component, which is connected to a single-phase liquid supply pipeline, a single-phase liquid return pipeline, and a cooling plate liquid exchange pipeline. The single-phase liquid supply pipeline and the single-phase liquid return pipeline are used to connect to the device being cooled.

[0007] A two-phase flow circulating cooling module, the two-phase flow circulating cooling module including a second liquid storage component, the second liquid storage component being connected to a two-phase liquid supply pipeline;

[0008] The two-phase flow circulating cooling module further includes a cooling plate heat exchanger. The cooling plate heat exchanger is connected to a two-phase return liquid pipeline and a cooling plate heat exchanger supply liquid pipeline. The two-phase supply liquid pipeline and the two-phase return liquid pipeline are used to connect to the device being cooled. The other end of the water-cooled refrigeration outlet pipeline is connected to the first liquid storage component. The other end of the cooling plate heat exchanger inlet pipeline is connected to the cooling plate heat exchanger. The other end of the water-cooled refrigeration inlet pipeline is connected to the cooling plate heat exchanger. The other end of the cooling plate heat exchanger supply liquid pipeline is connected to the second liquid storage component.

[0009] The cooling system with single-phase and two-phase heat exchange functions according to the embodiments of this application has at least the following beneficial effects:

[0010] The cooling system of this application, which has single-phase and two-phase heat exchange functions, includes a water-cooled refrigeration module, a single-phase flow circulating cooling module, and a two-phase flow circulating cooling module. The water-cooled refrigeration module provides a cold source for the single-phase flow circulating cooling module and the two-phase flow circulating cooling module. The water-cooled refrigeration module includes a water-cooled refrigeration outlet pipe and a water-cooled refrigeration inlet pipe. The single-phase flow circulating cooling module includes a first liquid storage component, which is connected to a single-phase liquid supply pipe, a single-phase liquid return pipe, and a cooling plate heat exchanger inlet pipe. The two-phase flow circulating cooling module includes a second liquid storage component and a cooling plate heat exchanger. The second liquid storage component is connected to a two-phase liquid supply pipe, and the cooling plate heat exchanger is connected to a two-phase liquid return pipe and a cooling plate heat exchanger supply pipe. The cooling plate heat exchanger is connected to the second liquid storage component via the cooling plate heat exchanger supply pipe. The water-cooled refrigeration module is connected to the first liquid storage component via the water-cooled refrigeration outlet pipe, the first liquid storage component is connected to the cooling plate heat exchanger via the cooling plate heat exchanger inlet pipe, and the cooling plate heat exchanger is connected to the water-cooled refrigeration module via the water-cooled refrigeration inlet pipe. The cooling system of this application, which has both single-phase and two-phase heat exchange functions, can be connected to the device to be cooled via a single-phase supply pipeline and a single-phase return pipeline, or via a two-phase supply pipeline and a two-phase return pipeline. This cooling system integrates both single-phase and two-phase heat exchange functions, enabling it to utilize a low-cost, simple single-phase cooling method under low to medium heat flux density conditions, and a more efficient two-phase cooling method under high heat flux density conditions. This meets the thermal management needs of different equipment and load variations, significantly improving the system's application flexibility and adaptability.

[0011] According to some embodiments of this application, the two-phase flow circulating cooling module further includes a back pressure regulating valve, which is disposed on the two-phase return pipeline.

[0012] According to some embodiments of this application, the two-phase flow circulating cooling module further includes a first flow control component and a second flow control component. The first flow control component is disposed on the cooling plate liquid supply pipeline. The two-phase return pipeline is connected to a first pipeline. The other end of the first pipeline is connected to the cooling plate liquid supply pipeline. The second flow control component is disposed on the first pipeline.

[0013] According to some embodiments of this application, the two-phase flow circulating cooling module further includes a first main pump and a loop pipeline. The first main pump is disposed on the two-phase liquid supply pipeline, one end of the loop pipeline is connected to the two-phase liquid supply pipeline, and the other end of the loop pipeline is connected to the second liquid storage component.

[0014] According to some embodiments of this application, the single-phase flow circulating cooling module further includes a first expansion component, a buffer component, and a second expansion component. The buffer component is disposed on the single-phase liquid supply pipeline, the first expansion component is disposed on the single-phase liquid supply pipeline, and the second expansion component is disposed on the cooling plate liquid inlet pipeline.

[0015] According to some embodiments of this application, the single-phase flow circulating cooling module further includes a temperature-controlled three-way valve and a second pipeline. The temperature-controlled three-way valve is disposed on the single-phase liquid supply pipeline between the buffer component and the first liquid storage component, and one end of the second pipeline is connected to the temperature-controlled three-way valve and the single-phase liquid return pipeline.

[0016] According to some embodiments of this application, the single-phase flow circulating cooling module further includes a liquid replenishment module. The liquid replenishment module includes a liquid replenishment pipeline, a liquid drain pipeline, a first filter, and a liquid replenishment pump. One end of the liquid replenishment pipeline and the liquid drain pipeline are both connected to the first liquid storage component. The first filter is disposed on the liquid replenishment pipeline, and the liquid replenishment pump is disposed on the liquid replenishment pipeline at the outlet end of the first filter.

[0017] According to some embodiments of this application, the water-cooled refrigeration module further includes an evaporator, a compressor, a condenser, a third pipeline, a fourth pipeline, and a fifth pipeline. The evaporator is connected to the water-cooled refrigeration outlet pipeline and the water-cooled refrigeration inlet pipeline. The evaporator is connected to the compressor through the third pipeline. The compressor is connected to the condenser through the fourth pipeline. The condenser is connected to the evaporator through the fifth pipeline.

[0018] According to some embodiments of this application, the water-cooled refrigeration module further includes an economizer, a sixth pipeline, and a seventh pipeline. The economizer is disposed on the fifth pipeline. One end of the sixth pipeline is connected to the compressor, and the other end of the sixth pipeline is connected to the economizer. One end of the seventh pipeline is connected to the economizer, and the other end of the seventh pipeline is connected to the fifth pipeline.

[0019] According to some embodiments of this application, the water-cooled refrigeration module further includes a cooling tower module, which is connected to the condenser. Attached Figure Description

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of a cooling system with single-phase and two-phase heat exchange functions according to an embodiment of this application;

[0022] Figure 2 for Figure 1 A structural schematic diagram of another embodiment from another angle;

[0023] Figure 3 This is a schematic flow diagram of a cooling system with single-phase and two-phase heat exchange functions according to an embodiment of this application.

[0024] Figure 4 This is a schematic diagram of the water-cooled refrigeration module according to one embodiment of this application;

[0025] Figure 5 This is a schematic diagram of the flow of a single-phase circulating cooling module according to an embodiment of this application;

[0026] Figure 6 This is a schematic diagram of a two-phase flow circulating cooling module according to an embodiment of this application;

[0027] Figure 7 This is a schematic diagram of the structure of a water-cooled refrigeration module according to an embodiment of this application;

[0028] Figure 8 for Figure 7 A structural schematic diagram of another embodiment from another angle;

[0029] Figure 9 This is a schematic diagram of the structure of a single-phase flow circulating cooling module according to an embodiment of this application;

[0030] Figure 10 for Figure 9 A structural schematic diagram of another embodiment from another angle;

[0031] Figure 11 This is a schematic diagram of the structure of a two-phase flow circulating cooling module according to an embodiment of this application;

[0032] Figure 12 for Figure 11 A structural schematic diagram of another embodiment from another angle;

[0033] Figure 13This is a schematic diagram of the structure of a fluid replenishment module according to one embodiment of this application.

[0034] Figure label:

[0035] Water-cooled refrigeration module 1; Evaporator 11; Water-cooled refrigeration outlet pipe 111; Water-cooled refrigeration inlet pipe 112; Third pipe 113; Compressor 12; Fourth pipe 121; Condenser 13; Fifth pipe 131; Economizer 14; Sixth pipe 141; Seventh pipe 142; Cooling tower 15; Circulating water pump 151; Second filter 152; First butterfly valve 153; Second butterfly valve 154;

[0036] Single-phase flow circulating cooling module 2; single-phase liquid supply pipeline 211; single-phase liquid return pipeline 212; first liquid storage component 22; buffer component 23; second heater 231; first expansion component 241; second expansion component 242; second main pump 25; temperature control three-way valve 26; second pipeline 261; third main pump 27;

[0037] Two-phase flow circulating cooling module 3; two-phase liquid supply pipeline 311; two-phase liquid return pipeline 312; second liquid storage component 32; first heater 321; cooling plate heat exchanger 33; cooling plate heat exchanger inlet pipeline 331; cooling plate heat exchanger supply pipeline 332; first pipeline 333; first main pump 34; loop pipeline 341; back pressure regulating valve 35; first flow control component 361; second flow control component 362;

[0038] 41. Liquid replenishment line; 42. Liquid replenishment pump; 43. First filter; 44. Drainage line. Detailed Implementation

[0039] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0040] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] The following reference Figures 1 to 13 This application describes a cooling system with single-phase and two-phase heat exchange functions in its embodiments.

[0043] according to Figures 1 to 2As shown, a cooling system with single-phase and two-phase heat exchange functions according to an embodiment of this application includes a water-cooled refrigeration module 1, a single-phase flow circulation cooling module 2, and a two-phase flow circulation cooling module 3. The water-cooled refrigeration module 1 is used to provide a cold source for the single-phase flow circulation cooling module 2 and the two-phase flow circulation cooling module 3, and to exchange heat with the cooling medium. The water-cooled refrigeration module 1 includes a water-cooled refrigeration outlet pipe 111 and a water-cooled refrigeration inlet pipe 112; the single-phase flow circulating cooling module 2 includes a first liquid storage component 22, which is connected to a single-phase liquid supply pipe 211, a single-phase liquid return pipe 212 and a cooling plate heat exchanger inlet pipe 331; the two-phase flow circulating cooling module 3 includes a second liquid storage component 32 and a cooling plate heat exchanger 33, which is connected to a two-phase liquid supply pipe 311, and the cooling plate heat exchanger 33 is connected to a two-phase liquid return pipe 312 and a cooling plate heat exchanger supply pipe 332, and the cooling plate heat exchanger 33 is connected to the second liquid storage component 32 through the cooling plate heat exchanger supply pipe 332. The water-cooled refrigeration module 1 is connected to the first liquid storage component 22 through the water-cooled refrigeration outlet pipe 111, and is used to provide cooling medium to the first liquid storage component 22. The first liquid storage component 22 is connected to the cooling plate heat exchanger 33 through the cooling plate heat exchanger inlet pipe 331. Part of the cooling medium in the first liquid storage component 22 flows to the cooling plate heat exchanger 33 to participate in the heat exchange of two-phase flow circulation cooling. The cooling plate heat exchanger 33 is connected to the water-cooled refrigeration module 1 through the water-cooled refrigeration inlet pipe 112 to realize the circulation of cooling medium.

[0044] In single-phase flow circulating cooling, the water-cooled refrigeration module 1 first cools the single-phase module cooling medium. The cooled single-phase module cooling medium is then transported through the water-cooled refrigeration outlet pipe 111 to the first liquid storage component 22 of the single-phase flow circulating cooling module 2. In the external circulation path, the single-phase module cooling medium in the first liquid storage component 22 is transported to the cooled device through the single-phase supply pipe 211, absorbs its heat, and then returns to the first liquid storage component 22 through the single-phase return pipe 212. In the internal circulation path, the single-phase module cooling medium flows out of the first liquid storage component 22, is transported to the cooling plate heat exchanger 33 through the cooling plate heat exchanger inlet pipe 331, and then returns to the water-cooled refrigeration inlet pipe 112 of the water-cooled module, completing one internal cycle. The single-phase flow circulating cooling module 2 can efficiently transfer the heat from the cooled device to the cold source and maintain the stable operating temperature of the cooled device.

[0045] In the two-phase flow circulating cooling system, the water-cooled refrigeration module 1 first cools the single-phase module cooling medium. The cooled single-phase module cooling medium is then transported through the water-cooled refrigeration outlet pipe 111 to the first liquid storage component 22 of the single-phase flow circulating cooling module 2. The single-phase module cooling medium flows out of the first liquid storage component 22 and is transported through the cooling plate heat exchanger inlet pipe 331 to the cooling plate heat exchanger 33. In the cooling plate heat exchanger 33, the single-phase module cooling medium exchanges heat with the two-phase module cooling medium. The cooled two-phase module cooling medium is then transported through the cooling plate heat exchanger supply pipe 332 to the second liquid storage component 32. The second liquid storage component 32 stores the two-phase module cooling medium and then transports it to the two-phase supply pipe 311, flowing towards the device being cooled. In the device being cooled, the liquid two-phase module cooling medium absorbs a large amount of heat and undergoes a phase change, transforming from a liquid state to a gas-liquid mixed two-phase state, thereby achieving efficient phase change heat transfer. Subsequently, the cooling medium of the two-phase module returns to the cooling plate heat exchanger 33 through the two-phase return liquid pipeline 312. In the cooling plate heat exchanger 33, it exchanges heat with the cooling medium of the single-phase module, is condensed back into a liquid state, and is sent back to the second liquid storage component 32 through the cooling plate heat exchanger supply liquid pipeline 332, completing the two-phase flow cooling cycle. The two-phase flow circulating cooling module 3 makes full use of the latent heat of phase change of the two-phase module cooling medium for heat transfer. The heat absorption capacity of the latent heat of phase change of the two phases is much higher than that of the sensible heat exchange of the single phase, making it particularly suitable for high-power, high-heat-flux-density equipment.

[0046] The cooling system of this application, which features both single-phase and two-phase heat exchange capabilities, can be connected to the device to be cooled via a single-phase supply line 211 and a single-phase return line 212, or via a two-phase supply line 311 and a two-phase return line 312. This cooling system, possessing both single-phase and two-phase heat exchange capabilities, can select between single-phase and two-phase flow circulation cooling modes depending on the heat flux density of the device being cooled. This ensures system economy and energy consumption control in low- to medium-power scenarios while effectively improving heat exchange efficiency and temperature control stability in high-power, high-heat-flux applications. The cooling system of this application, while ensuring reliable equipment operation, also possesses good scalability and applicability, making it particularly suitable for applications with stringent thermal management requirements, such as lasers, new energy batteries, and high-performance electronic devices, demonstrating its versatility.

[0047] In some embodiments, the cooling medium of the single-phase module in the single-phase flow circulating cooling module 2 is 65# aviation coolant, and the first liquid storage component 22 is specifically configured as a liquid storage tank.

[0048] In some embodiments, the cooling medium in the two-phase flow circulating cooling module 3 is R134a, and the second liquid storage component 32 is specifically configured as a fluorine tank. In some embodiments, the fluorine tank is equipped with a first heater 321 for adjusting the cooling medium in the fluorine tank. In some embodiments, the fluorine tank is equipped with a ball valve for discharging the cooling medium from the fluorine tank.

[0049] In some embodiments, manual valves are provided on the water-cooled refrigeration outlet pipe 111, the water-cooled refrigeration inlet pipe 112, the single-phase liquid supply pipe 211, the single-phase liquid return pipe 212, the cooling plate liquid exchange inlet pipe 331, the two-phase liquid supply pipe 311, and the two-phase liquid return pipe 312.

[0050] In some embodiments, the device being cooled can be a high-power laser. High-power lasers generate significant heat dissipation during operation, and their cooling significantly impacts performance and reliability. Therefore, effective heat dissipation methods are essential. The cooling system of this application provides excellent heat dissipation conditions for the operation of high-power lasers. It not only effectively solves the heat generation problem of high-power lasers through temperature reduction but also reduces their energy consumption, providing a reliable guarantee for the safe and stable operation of high-power lasers.

[0051] according to Figures 1 to 13 As shown in one embodiment of this application, the two-phase flow circulating cooling module 3 further includes a back pressure regulating valve 35. The back pressure regulating valve 35 is installed on the two-phase return liquid pipeline 312 and is used to regulate the pipeline pressure of the gas-liquid two-phase module cooling medium returning to the cooling plate heat exchanger 33. In actual cooling, fluctuations in external heat load often cause changes in the gas-liquid ratio of the two-phase module cooling medium. If the system pressure is not adjusted in time, problems such as unstable evaporation temperature, reduced liquid supply efficiency, and insufficient condensation can easily occur, ultimately leading to the failure of the entire cooling system temperature control or slow response. By installing a back pressure regulating valve 35 on the two-phase return liquid pipeline 312, the pressure of the two-phase flow return liquid pipeline can be dynamically controlled, thereby stabilizing the flow state and phase change conditions of the two-phase module cooling medium in the cooling plate heat exchanger 33, making the heat exchange process of the cooling system more stable and continuous.

[0052] according to Figures 1 to 13As shown, in one embodiment of this application, the two-phase flow circulating cooling module 3 further includes a first flow control component 361 and a second flow control component 362. The first flow control component 361 is disposed on the cooling plate heat exchange supply pipeline 332 and is used to regulate the flow rate of the two-phase module cooling medium supplied from the cooling plate heat exchanger 33 to the second liquid storage component 32. The two-phase return pipeline 312 at the output end of the back pressure regulating valve 35 is connected to the first pipeline 333, and the other end of the first pipeline 333 is connected to the cooling plate heat exchange supply pipeline 332 at the output end of the first flow control component 361, forming a bypass passage between the return and supply liquids. The second flow control component 362 is disposed on the first pipeline 333 and is used to regulate the flow rate of the first pipeline 333.

[0053] The back pressure regulating valve 35, the first flow control component 361, and the second flow control component 362 work together to dynamically regulate the pressure and temperature of the two-phase flow circulating cooling module 3. The back pressure regulating valve 35 mainly stabilizes the return liquid pressure of the two-phase flow circulating cooling module 3. The first flow control component 361 precisely controls the flow rate of the cooling plate supply pipe 332. The second flow control component 362 opens the first pipe 333 when the cooling system fluctuates, realizing the buffering or backflow of part of the cooling medium of the two-phase module. The dynamic balance and optimization of pressure and flow rate in the two-phase flow circulating cooling process ensures the long-term stable operation and heat exchange efficiency of the two-phase flow circulating cooling module 3.

[0054] In some embodiments, the first flow control component 361 and the second flow control component 362 are both electric ball valves.

[0055] according to Figures 1 to 13 As shown, in one embodiment of this application, the two-phase flow circulating cooling module 3 further includes a first main pump 34 and a loop pipe 341. The first main pump 34 is disposed on the two-phase liquid supply pipe 311 and is used to pump the two-phase module cooling medium to the device being cooled. One end of the loop pipe 341 is connected to the two-phase liquid supply pipe 311 at the output end of the filter, and the other end of the loop pipe 341 is connected to the second liquid storage component 32, thereby forming a bypass circulation branch returning from the two-phase liquid supply pipe 311 to the second liquid storage component 32. When there are fluctuations in the external heat load, the pressure fluctuations of the two-phase flow circulating cooling module 3 can be buffered by opening the loop pipe 341, reducing the pumping of the two-phase module cooling medium to the device being cooled. The configuration of the loop pipe 341 further improves the operational flexibility of the system, providing a return channel under high dynamic conditions or abnormal conditions, maintaining the pressure balance of the cooling system and the continuity of the cooling medium flow.

[0056] In some embodiments, the two-phase flow circulating cooling module 3 further includes a filter, which is disposed on the two-phase liquid supply pipeline 311 at the output end of the first main pump 34 to prevent impurities in the cooling medium of the two-phase module from entering the cooled device, reducing the risk of blockage and wear, and ensuring the stable operation of the cooled device. In some embodiments, the filter is specifically a dryer filter.

[0057] In some embodiments, an electric ball valve is provided on the loop line 341 to control the flow rate of the loop line 341.

[0058] according to Figures 1 to 13 As shown in one embodiment of this application, the single-phase flow circulating cooling module 2 further includes a first expansion component 241, a buffer component 23, and a second expansion component 242. The buffer component 23 is disposed on the single-phase liquid supply pipeline 211 to buffer the pressure of the single-phase module cooling medium and ensure the stability of the cooling medium pressure in the single-phase liquid supply pipeline 211. The first expansion component 241 is disposed on the single-phase liquid supply pipeline 211 at the output end of the buffer component 23 to regulate pressure fluctuations in the single-phase liquid supply pipeline 211 and protect the pipeline and other components from pressure shocks. The second expansion component 242 is disposed on the cooling plate inlet pipeline 331 to regulate the pressure of the cooling plate inlet pipeline 331, ensuring that the single-phase module cooling medium maintains a suitable pressure and flow state before exchanging heat with the two-phase module cooling medium, which helps to improve heat exchange efficiency and ensure the stability of the cooling process. The buffer component 23 works in conjunction with the first expansion component 241, which not only improves the stability of the cooling medium flow in the single-phase module, but also effectively alleviates the volume expansion and pressure fluctuation caused by temperature difference changes, ensuring the safe, reliable and continuous operation of the single-phase flow circulation cooling module 2 under different operating conditions.

[0059] Under single-phase flow circulation cooling, the single-phase cooling medium is output from the first liquid storage component 22 and enters the buffer component 23 for short-term stabilization and flow rate adjustment. After the volume change is buffered by the first expansion component 241, it enters the cooled device along the single-phase liquid supply pipeline 211, exchanges heat with the cooled device, and then returns to the first liquid storage component 22 through the single-phase liquid return pipeline 212.

[0060] Under two-phase flow circulation cooling, part of the single-phase module cooling medium is output from the first liquid storage component 22. After the pressure is regulated by the second expansion component 242 and the local expansion impact is absorbed, it enters the cooling plate heat exchanger 33 to exchange heat with the two-phase module cooling medium.

[0061] By setting buffer components 23 and two expansion components in the single-phase liquid supply line 211 and the cooling plate liquid exchange line 331, the thermal expansion, pressure fluctuation and sudden flow rate of the single-phase module cooling medium during operation can be effectively absorbed, reducing the impact on the cooling system caused by changes in external load or instantaneous expansion during heat exchange.

[0062] In some embodiments, the first expansion component 241 and the second expansion component 242 are expansion tanks.

[0063] In some embodiments, the buffer component 23 is a buffer water tank. In some embodiments, a second heater 231 is also provided on the buffer water tank;

[0064] In some embodiments, the single-phase liquid supply line 211 at the output end of the first expansion member 241 is further provided with a second main pump 25, which is used to pump the single-phase module cooling medium to the device being cooled. At the same time, the buffer member 23 stabilizes the pressure of the cooling medium in the single-phase liquid supply line 211, preventing the second main pump 25 from frequently starting due to pressure changes. In some embodiments, the output end of the second main pump 25 is further provided with a filter to prevent impurities in the single-phase module cooling medium from entering the device being cooled.

[0065] In some embodiments, the cooling plate inlet pipe 331 at the output end of the second expansion member 242 is further provided with a third main pump 27, which is used to pump the single-phase module cooling medium to the cooling plate inlet 33, so as to facilitate heat exchange between the single-phase module cooling medium and the two-phase module cooling medium. In some embodiments, a filter is further provided before the input end of the second expansion member 242.

[0066] according to Figures 1 to 13 As shown in one embodiment of this application, the single-phase flow circulating cooling module 2 further includes a temperature-controlled three-way valve 26 and a second pipeline 261. The temperature-controlled three-way valve 26 is disposed on the single-phase liquid supply pipeline 211 between the buffer component 23 and the first liquid storage component 22. The temperature-controlled three-way valve 26 has three ports, which are respectively connected to the first liquid storage component 22, the buffer tank, and the second pipeline 261. One end of the second pipeline 261 is connected to the temperature-controlled three-way valve 26 and the single-phase liquid return pipeline 212. The temperature-controlled three-way valve 26 intelligently controls the flow direction and mixing ratio of the single-phase module cooling medium according to a preset temperature, thereby realizing the temperature regulation and control of the single-phase module cooling medium.

[0067] When the temperature of the cooling medium is lower than the set temperature, the temperature-controlled three-way valve 26 can control a portion of the higher-temperature cooling medium from the single-phase return line 212 to be introduced through the second line 261, mixing with the low-temperature cooling medium from the first liquid storage component 22, thereby increasing the supply temperature and achieving dynamic temperature regulation. When the cooling medium temperature is normal or too high, the temperature-controlled three-way valve 26 closes the second line 261, ensuring that the full flow is the low-temperature supply to the first liquid storage component 22, thereby enhancing the cooling effect.

[0068] By setting a temperature-controlled three-way valve 26 and a second pipeline 261 in the single-phase flow circulating cooling module 2, the cooling system can dynamically adjust the supply liquid temperature according to real-time temperature changes, thereby achieving closed-loop temperature control management.

[0069] according to Figures 1 to 13 As shown, in one embodiment of this application, the single-phase flow circulating cooling module 2 further includes a liquid replenishment module. The liquid replenishment module is used to automatically replenish and drain the single-phase flow circulating cooling to maintain the pressure stability of the cooling medium in the single-phase module. The liquid replenishment module includes a liquid replenishment pipeline 41, a liquid draining pipeline 44, a first filter 43, and a liquid replenishment pump 42. One end of both the liquid replenishment pipeline 41 and the liquid draining pipeline 44 is connected to the first liquid storage component 22. The first filter 43 is disposed on the liquid replenishment pipeline 41, and the liquid replenishment pump 42 is disposed on the liquid replenishment pipeline 41 at the outlet end of the first filter 43. The first filter 43 prevents impurities in the cooling medium from entering the liquid replenishment pump 42 and causing damage.

[0070] When the single-phase cooling medium in the single-phase circulating cooling module 2 is lost due to minor leakage or electrolysis, the replenishment module injects additional cooling medium into the first liquid storage component 22 through the replenishment pipeline 41. The replenishment pump 42 provides power for the replenishment process, thereby maintaining stable pressure and ensuring the single-phase circulating cooling module 2 is filled with cooling medium. The drain pipeline 44 is used to drain a portion of the cooling medium from the first liquid storage component 22 for easy maintenance or replacement. By setting up the replenishment module, the pressure of the cooling medium in the cooling system is stabilized, preventing circulation interruptions or unstable supply problems caused by insufficient liquid level.

[0071] In some embodiments, manual valves are provided on both the replenishment line 41 and the drain line 44.

[0072] according to Figures 1 to 13 As shown, in one embodiment of this application, the water-cooled refrigeration module 1 further includes an evaporator 11, a compressor 12, a condenser 13, a third pipe 113, a fourth pipe 121, and a fifth pipe 131. The evaporator 11 is connected to the water-cooled refrigeration outlet pipe 111 and the water-cooled refrigeration inlet pipe 112. The evaporator 11 is used for heat exchange with the cooling medium of the single-phase module, so that the cooling medium of the single-phase module is cooled to the target temperature when passing through the evaporator 11. The other side of the evaporator 11 is connected to the compressor 12 through the third pipe 113. The compressor 12 is used to compress the high-temperature, low-pressure gas from the evaporator 11, outputting it as a high-temperature, high-pressure gas. The compressor 12 is connected to the condenser 13 through the fourth pipe 121. The condenser 13 is used to condense the high-temperature, high-pressure gas into a high-pressure, low-temperature liquid. The condenser 13 is connected to the evaporator 11 through the fifth pipe 131, completing a closed refrigeration cycle and providing a stable and continuous cold source for the cooling system.

[0073] During the operation of the cooling system, after the compressor 12 starts, it continuously compresses and circulates. The single-phase module cooling medium is cooled by the evaporator 11 in the water-cooled refrigeration module 1, and then flows to the single-phase flow circulating cooling module 2 through the water-cooled refrigeration outlet pipe 111 for system heat exchange. Subsequently, it returns to the evaporator 11 through the water-cooled refrigeration inlet pipe 112, realizing a complete closed-loop circulation of the cooling medium.

[0074] In some embodiments, an electric valve 39 is provided on the fifth pipeline 131.

[0075] according to Figures 1 to 13 As shown, in one embodiment of this application, the water-cooled refrigeration module 1 further includes an economizer 14, a sixth pipe 141, and a seventh pipe 142. The economizer 14 is disposed on the fifth pipe 131 and located between the pipes between the condenser 13 and the evaporator 11. One end of the sixth pipe 141 is connected to the compressor 12, and the other end of the sixth pipe 141 is connected to the economizer 14. One end of the seventh pipe 142 is connected to the economizer 14, and the other end of the seventh pipe 142 is connected to the fifth pipe 131. The economizer 14 performs subcooling treatment on the high-pressure liquid refrigerant that is about to enter the evaporator 11, thereby further improving the cooling effect of the water-cooled refrigeration module 1.

[0076] In some embodiments, the seventh pipeline 142 is provided with an electric valve 39 and a manual valve.

[0077] according to Figures 1 to 13 As shown, in one embodiment of this application, the water-cooled refrigeration module 1 further includes a cooling tower 15 module, which is connected to the condenser 13 and provides a cold source for the condenser 13. In the water-cooled refrigeration module 1, the high-temperature, high-pressure gaseous refrigerant from the compressor 12 first enters the condenser 13, where it exchanges heat with the cooling water and is condensed into a high-pressure liquid refrigerant. The heated cooling water then flows into the cooling tower 15, where it undergoes forced or natural ventilation to release the absorbed heat into the atmosphere, thereby lowering the water temperature. The cooled water then flows back to the condenser 13 to continue its use in the next round of condensation and heat exchange.

[0078] In some embodiments, the cooling tower 15 module includes a cooling tower 15, a circulating water pump 151, a second filter 152, etc. The circulating water pump 151 drives cooling water to continuously flow between the condenser 13 and the cooling tower 15, forming an independent water circulation system.

[0079] In some embodiments, the cooling tower 15 is connected to the condenser 13 via a first butterfly valve 153, a second butterfly valve 154, and piping.

[0080] The cooling system of this application, which integrates a single-phase flow circulating cooling module 2 and a two-phase flow circulating cooling module 3, can flexibly switch cooling modes according to different heat load conditions, stably control the flow and temperature of the cooling medium, improve heat exchange efficiency and system operational stability, and is particularly suitable for the high-precision thermal management needs of high-power, high-heat-density equipment. It also effectively solves the problem of dynamically balancing and optimizing the pressure and flow rate in the two-phase flow circulating cooling process when the load power changes, ensuring the long-term stable operation and heat exchange efficiency of the two-phase flow circulating cooling module 3.

[0081] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0082] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A cooling system with single-phase and two-phase heat exchange functions, characterized in that: include Water-cooled refrigeration module, the water-cooled refrigeration module including water-cooled refrigeration outlet pipe and water-cooled refrigeration inlet pipe; A single-phase flow circulating cooling module includes a first liquid storage component, which is connected to a single-phase liquid supply pipeline, a single-phase liquid return pipeline, and a cooling plate liquid exchange pipeline. The single-phase liquid supply pipeline and the single-phase liquid return pipeline are used to connect to the device being cooled. A two-phase flow circulating cooling module, the two-phase flow circulating cooling module including a second liquid storage component, the second liquid storage component being connected to a two-phase liquid supply pipeline; The two-phase flow circulating cooling module further includes a cooling plate heat exchanger. The cooling plate heat exchanger is connected to a two-phase return liquid pipeline and a cooling plate heat exchanger supply liquid pipeline. The two-phase supply liquid pipeline and the two-phase return liquid pipeline are used to connect to the device being cooled. The other end of the water-cooled refrigeration outlet pipeline is connected to the first liquid storage component. The other end of the cooling plate heat exchanger inlet pipeline is connected to the cooling plate heat exchanger. The other end of the water-cooled refrigeration inlet pipeline is connected to the cooling plate heat exchanger. The other end of the cooling plate heat exchanger supply liquid pipeline is connected to the second liquid storage component.

2. The cooling system with single-phase and two-phase heat exchange functions according to claim 1, characterized in that: The two-phase flow circulating cooling module also includes a back pressure regulating valve, which is installed on the two-phase return pipeline.

3. The cooling system with single-phase and two-phase heat exchange functions according to claim 2, characterized in that: The two-phase flow circulating cooling module further includes a first flow control component and a second flow control component. The first flow control component is disposed on the cooling plate liquid supply pipeline. The two-phase return pipeline is connected to the first pipeline. The other end of the first pipeline is connected to the cooling plate liquid supply pipeline. The second flow control component is disposed on the first pipeline.

4. The cooling system with single-phase and two-phase heat exchange functions according to claim 1, characterized in that: The two-phase flow circulating cooling module also includes a first main pump and a loop pipeline. The first main pump is installed on the two-phase liquid supply pipeline. One end of the loop pipeline is connected to the two-phase liquid supply pipeline, and the other end of the loop pipeline is connected to the second liquid storage component.

5. The cooling system with single-phase and two-phase heat exchange functions according to claim 1, characterized in that: The single-phase flow circulating cooling module further includes a first expansion component, a buffer component, and a second expansion component. The buffer component is disposed on the single-phase liquid supply pipeline, the first expansion component is disposed on the single-phase liquid supply pipeline, and the second expansion component is disposed on the cooling plate liquid inlet pipeline.

6. The cooling system with single-phase and two-phase heat exchange functions according to claim 5, characterized in that: The single-phase flow cooling module further includes a temperature-controlled three-way valve and a second pipeline. The temperature-controlled three-way valve is located on the single-phase liquid supply pipeline between the buffer component and the first liquid storage component. One end of the second pipeline is connected to the temperature-controlled three-way valve and the single-phase liquid return pipeline.

7. The cooling system with single-phase and two-phase heat exchange functions according to claim 1, characterized in that: The single-phase flow circulating cooling module further includes a liquid replenishment module, which includes a liquid replenishment pipeline, a liquid drain pipeline, a first filter, and a liquid replenishment pump. One end of the liquid replenishment pipeline and the liquid drain pipeline are both connected to the first liquid storage component. The first filter is disposed on the liquid replenishment pipeline, and the liquid replenishment pump is disposed on the liquid replenishment pipeline at the outlet end of the first filter.

8. The cooling system with single-phase and two-phase heat exchange functions according to claim 1, characterized in that: The water-cooled refrigeration module also includes an evaporator, a compressor, a condenser, a third pipe, a fourth pipe, and a fifth pipe. The evaporator is connected to the water-cooled refrigeration outlet pipe and the water-cooled refrigeration inlet pipe. The evaporator is connected to the compressor through the third pipe. The compressor is connected to the condenser through the fourth pipe. The condenser is connected to the evaporator through the fifth pipe.

9. The cooling system with single-phase and two-phase heat exchange functions according to claim 8, characterized in that: The water-cooled refrigeration module also includes an economizer, a sixth pipeline, and a seventh pipeline. The economizer is located on the fifth pipeline. One end of the sixth pipeline is connected to the compressor, and the other end of the sixth pipeline is connected to the economizer. One end of the seventh pipeline is connected to the economizer, and the other end of the seventh pipeline is connected to the fifth pipeline.

10. The cooling system with single-phase and two-phase heat exchange functions according to claim 8, characterized in that: The water-cooled refrigeration module also includes a cooling tower module, which is connected to the condenser.

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