Heat exchange unit and liquid cooling system

Abstract

The invention relates to a heat exchange unit and a liquid cooling system.The heat exchange unit comprises a primary side assembly, a secondary side assembly and a heat exchanger, the primary side assembly is used for being connected with an external cold source, the secondary side assembly is used for being communicated with cold using equipment, and heat exchange is conducted between the primary side assembly and the secondary side assembly through the heat exchanger; and the cold supplementing module is provided with a cold supplementing loop, and the cold supplementing loop can exchange heat with cooling liquid in the primary side assembly so as to provide cooling capacity for the primary side assembly. The heat exchange unit is simple in structural design, low in cost, capable of achieving multi-mode regulation and control in different scenes and wider in application range.

Description

Technical Field

[0001] This invention relates to the field of heat exchange technology, and more specifically, to a heat exchange unit and a liquid cooling system. Background Technology

[0002] In current plate-type liquid cooling systems, both liquid and air-cooled equipment need to operate simultaneously, and the primary-side inlet water temperatures required for liquid and air cooling differ (e.g., liquid cooling requires a primary-side inlet water temperature of 35°C, while air cooling requires 12°C). This necessitates two separate cooling source systems for liquid and air cooling. The main component of the liquid-cooled cooling source system is the cooling tower, while the air-cooled cooling source system requires a chiller unit in addition to the cooling tower. The aforementioned liquid cooling system requires the design of two sets of primary-side piping, resulting in complex construction and a long construction period. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a heat exchange unit with a simple structural design and a wider range of applications.

[0005] An embodiment of the present invention provides a liquid cooling system.

[0006] The heat exchange unit of an embodiment of the present invention includes: a primary side component, a secondary side component, and a heat exchanger. The primary side component is used to connect to an external cold source, and the secondary side component is used to communicate with a refrigeration device. The primary side component and the secondary side component exchange heat through the heat exchanger, which is at least one of a liquid-liquid heat exchanger and a wind-liquid heat exchanger.

[0007] According to an embodiment of the present invention, the heat exchange unit can transfer the cooling capacity of an external cold source to the cooling equipment because the primary side component and the secondary side component exchange heat through a heat exchanger, which is at least one of a liquid-liquid heat exchanger and an air-liquid heat exchanger. Its structural design is simple and its application range is wider.

[0008] In some embodiments, the heat exchange unit further includes a cooling module having a cooling circuit that exchanges heat with the coolant in at least one of the primary side assembly and the secondary side assembly.

[0009] In some embodiments, the cooling replenishment module further includes a compressor, an evaporator, and a condenser. The cooling replenishment circuit is connected to the refrigerant side of the evaporator, the refrigerant side of the condenser, and the compressor. The coolant side of the evaporator is connected to the primary side assembly or the secondary side assembly.

[0010] In some embodiments, the primary side assembly includes a primary side pipeline, the heat exchanger is a liquid-liquid heat exchanger, the primary side pipeline is connected to the liquid-liquid heat exchanger, and the coolant side of the evaporator is connected to the primary side pipeline.

[0011] In some embodiments, the secondary side assembly includes a water supply line and a water return line, both of which are connected to the heat exchanger, and the coolant side of the evaporator is connected to the water supply line.

[0012] In some embodiments, the primary side assembly includes a primary side pipeline, the heat exchanger is a liquid-liquid heat exchanger, the heat exchange unit further includes a heat exchange branch pipe, the heat exchange branch pipe is connected to the coolant side of the condenser, the inlet end of the heat exchange branch pipe is connected to the inlet end of the primary side pipeline, and the outlet end of the heat exchange branch pipe is connected to the outlet end of the primary side pipeline.

[0013] In some embodiments, the cooling replenishment module further includes a throttling device connected in series in the cooling replenishment circuit, and the throttling device, the compressor, the evaporator, and the condenser are integrated together.

[0014] In some embodiments, the primary-side component and the heat exchanger are configured as an integrated module, which is detachably connected to the secondary-side component.

[0015] In some embodiments, the secondary side component includes a secondary side pipeline, a water supply module, and a pressure stabilizing module. The water supply module includes a water supply tank and a water supply pump. The water supply tank is connected to the pressure stabilizing module through the water supply pump. The pressure stabilizing module is connected in series in the secondary side pipeline.

[0016] In some embodiments, the heat exchange unit includes a secondary side pipeline and a plurality of circulating water pumps, wherein the plurality of circulating water pumps are disposed on the secondary side pipeline.

[0017] In some embodiments, the heat exchange unit includes a secondary side pipeline and a filter, wherein the filter is connected in series in the secondary side pipeline.

[0018] Another embodiment of the liquid cooling system of the present invention includes: a heat exchange unit, wherein the heat exchange unit is any one of the heat exchange units in the embodiments of the present invention, and the primary side component of the heat exchange unit is connected to a cooling tower; and a cooling device, wherein the secondary side component of the heat exchange unit is connected to the cooling device for heat exchange with the cooling device.

[0019] According to an embodiment of the present invention, the liquid cooling system allows the primary and secondary components to exchange heat through a heat exchanger, which is at least one of a liquid-liquid heat exchanger and a wind-liquid heat exchanger. Thus, the heat exchange unit can transfer the cooling capacity of an external cold source to the cooling equipment. Its structure is simple and its application range is wider.

[0020] In some embodiments, the liquid cooling system further includes an air cooling device, and the primary side component is connected in sequence to the air cooling device and the heat exchanger in the heat exchange unit along the flow direction of the coolant. The inlet water temperature of the air cooling device is T1, and the supply water temperature of the primary side component is T1g. When T1g < T1, the coolant from the cooling tower first enters the air-cooled equipment and then the heat exchanger; When T1g > T1, the cooling module in the heat exchange unit operates to cool the coolant from the cooling tower. The cooled coolant first enters the air-cooled equipment and then enters the heat exchanger.

[0021] In some embodiments, the liquid cooling system further includes an air-cooling device, and the primary-side component includes a first branch and a second branch connected in parallel, the first branch being connected to the air-cooling device and the second branch being connected to the heat exchanger in the heat exchange unit. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a heat exchange unit according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the cooling module of the heat exchange unit in an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the cooling module of a heat exchange unit according to another embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the cabinet of the heat exchange unit according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of a heat exchange unit according to another embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of a heat exchange unit according to another embodiment of the present invention.

[0028] Figure label: 1. Primary side components; 11. Primary side piping; 12. Fan; 2. Secondary side components; 21. Secondary side piping; 211. Water supply piping; 212. Water return piping; 3. Heat exchanger; 4. Cooling supplement module; 41. Cooling supplement circuit; 42. Compressor; 43. Evaporator; 44. Condenser; 45. Throttling device; 5. Heat exchange branch pipes; 61. Water supply module; 611. Water supply tank; 612. Water supply pump; 62. Voltage stabilizing module; 63. Circulating water pump; 64. Filter; 7. Cabinet; 71. Column; 72. Beam. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] The following is a reference appendix. Figures 1 to 6 The heat exchange unit and liquid cooling system of the present invention are described in the embodiments.

[0031] like Figure 1 , Figure 5 and Figure 6 As shown, the heat exchange unit of this embodiment includes: a primary side component 1, a secondary side component 2, and a heat exchanger 3. The primary side component 1 is used to connect to an external cold source, and the secondary side component 2 is used to communicate with a cooling device. The primary side component 1 and the secondary side component 2 exchange heat through the heat exchanger 3, which is at least one of a liquid-liquid heat exchanger and a wind-liquid heat exchanger.

[0032] According to an embodiment of the present invention, the heat exchange unit can transfer the cooling capacity of an external cold source to the cooling equipment because the primary side component 1 and the secondary side component 2 exchange heat through a heat exchanger 3, which is at least one of a liquid-liquid heat exchanger and an air-liquid heat exchanger. Its structural design is simple and its application range is wider.

[0033] It is understandable that, such as Figure 1 As shown, when heat exchanger 3 is a liquid-liquid heat exchanger, the primary side assembly 1 includes a one-side pipe 11, which is connected to the liquid-liquid heat exchanger. Figure 6 As shown, when the heat exchanger 3 is a wind-liquid heat exchanger, the primary side assembly 1 includes a fan 12, which blows air toward the wind-liquid heat exchanger.

[0034] Optionally, the heat exchange unit further includes a cooling module 4, which has a cooling circuit 41 that exchanges heat with the coolant in at least one of the primary side assembly 1 and the secondary side assembly 2. That is, the cooling module 4 can be located in either the primary side assembly 1 or the secondary side assembly 2.

[0035] Understandably, when the external cold source's cooling capacity is insufficient, the supplementary cooling module 4 can operate to exchange heat with the coolant in the primary side component 1 and / or the secondary side component 2, so as to further provide cooling capacity to the primary side component 1. This enables multi-mode control of the heat exchange unit in different scenarios, has a wider range of applications, and has a simple structural design and low cost.

[0036] Optionally, the cooling module 4 includes a compressor 42, an evaporator 43, and a condenser 44. The cooling circuit 41 is connected to the refrigerant side of the evaporator 43, the refrigerant side of the condenser 44, and the compressor 42. The coolant side of the evaporator 43 is connected to either the primary-side assembly 1 or the secondary-side assembly 2. This allows for the use of the compressor 42 to compress the refrigerant and exchange heat, thus supplementing the cooling capacity to the primary-side assembly 1 or the secondary-side assembly 2. This simplifies the structure of the heat exchange unit and shortens its manufacturing cycle.

[0037] For example, the condenser 44 is one of a liquid-liquid heat exchanger and a fan-liquid heat exchanger. For instance, if the condenser 44 is a liquid-liquid heat exchanger, it is understood that the liquid-liquid heat exchanger dissipates heat from the condenser 44 through heat exchange between the liquid and the refrigerant. As another example, if the condenser 44 is a fan-liquid heat exchanger, it is understood that the fan-liquid heat exchanger dissipates heat from the condenser 44 by blowing air through the fan 12, thereby ensuring the heat dissipation effect of the condenser 44.

[0038] In one example, such as Figure 1 As shown, the primary side assembly 1 includes a primary side pipe 11, and the heat exchanger 3 is a liquid-liquid heat exchanger. The primary side pipe 11 is connected to the liquid-liquid heat exchanger, and the coolant side of the evaporator 43 is connected to the primary side pipe 11. When the cooling capacity of the external cold source is insufficient, the supplementary cooling module 4 can operate to exchange heat with the coolant in the primary side pipe 11 to further provide cooling capacity to the primary side pipe 11. This enables multi-mode control of the heat exchange unit in different scenarios, has a wider range of applications, and features a simple structural design and lower cost.

[0039] In another example, such as Figure 5 As shown, the secondary side piping 21 of the secondary side component 2 includes a water supply pipe 211 and a return water pipe 212. Both the water supply pipe 211 and the return water pipe 212 are connected to the heat exchanger 3, and the coolant side of the evaporator 43 is connected to the water supply pipe 211. When the cooling capacity of the external cold source is insufficient, the cooling supplement module 4 can operate to exchange heat with the coolant in the water supply pipe 211 to further provide cooling capacity to the water supply pipe 211. This enables multi-mode control of the heat exchange unit in different scenarios, has a wider range of applications, and features a simple structural design and low cost.

[0040] In the example above, such as Figure 5As shown, the cooling module 4 is installed on the secondary side. At this time, the evaporator 43 is connected to the water supply side (heat exchanger 3 flows to the machine room) in the secondary side pipeline 21, which serves to supply water to the secondary side for cooling. At this time, the coolant side of the condenser 44 is still connected to the primary side pipeline 11.

[0041] It is understandable that the coolant side of the evaporator 43 can be connected to either the primary side water supply or the secondary side water supply. When the coolant side of the evaporator 43 is connected to the primary side water supply, the coolant flows first into the condenser 44 for cooling, and then into the heat exchanger 3.

[0042] For example, the cooling module 4 can be integrated into the housing of the heat exchange unit, or it can be externally mounted outside the housing of the heat exchange unit when there is insufficient space inside the housing.

[0043] Optionally, such as Figure 1 and Figure 5 As shown, the primary side assembly 1 includes a primary side pipe 11, and the heat exchanger 3 is a liquid-liquid heat exchanger. The heat exchange unit also includes a heat exchange branch pipe 5, which is connected to the coolant side of the condenser 44. The inlet end of the heat exchange branch pipe 5 is connected to the inlet end of the primary side pipe 11, and the outlet end of the heat exchange branch pipe 5 is connected to the outlet end of the primary side pipe 11. Therefore, the coolant in the primary side pipe 11 can be used to dissipate heat from the condenser 44 without the need for external heat dissipation pipes. This simplifies the piping arrangement of the heat exchange unit and improves the heat exchange effect.

[0044] Optionally, such as Figure 1 and Figure 5 As shown, the cooling module 4 also includes a throttling element 45, which is connected in series in the cooling circuit 41, and the throttling element 45, compressor 42, evaporator 43 and condenser 44 are integrated together.

[0045] Understandably, when the compressor 42 is working, the refrigerant charged in the cooling circuit 41 releases heat at the condenser 44 and becomes a semi-low temperature refrigerant. Then, the semi-low temperature refrigerant passes through the throttling device 45 and becomes a low temperature refrigerant. The low temperature refrigerant then enters the evaporator 43 to absorb heat and becomes a semi-high temperature refrigerant. After absorbing heat, it enters the compressor 42 for compression and becomes a high temperature and high pressure refrigerant. Finally, it returns to the condenser 44 to release heat again, completing the cycle.

[0046] For example, the throttling element 45 is at least one of a throttling valve and an expander.

[0047] Optionally, such as Figure 1 and Figure 5 As shown, the primary side component 1 and the heat exchanger 3 are constructed as an integrated module. The integrated module is detachably connected to the secondary side component 2, which facilitates the subsequent assembly of the equipment and helps to improve assembly efficiency.

[0048] For example, the secondary side component 2 can be constructed as another integrated module. When manufacturing the heat exchange unit, the secondary side component 2 can be configured as a modular whole, with water piping provided for connection to the heat exchanger 3. The "air-liquid heat exchanger + fan 12" can be configured as modular whole 1, and the "liquid-liquid heat exchanger + primary side piping 11" as modular whole 2. In this case, the energy-saving heat exchange unit can flexibly replace modular whole 1 and modular whole 2 according to the application scenario. This allows modular whole 2 to be installed when the data center server room has the installation conditions for primary side piping 11, and modular whole 1 to be installed when the data center server room does not have the installation conditions for primary side piping 11.

[0049] It is understandable that modular units are prefabricated components in the factory. During production, the pipes, various necessary sensors, etc. are connected and the spatial layout is completed. An outer shell can be set on the outside of the modular unit, with only the necessary water pipes and installation holes left for connection with other modular units (modular unit 1, modular unit 2 and cooling module 4, etc.).

[0050] Optionally, such as Figure 1 and Figure 5 As shown, the secondary side component 2 includes a secondary side pipeline 21, a water supply module 61, and a pressure stabilizing module 62. The water supply module 61 includes a water supply tank 611 and a water supply pump 612. The water supply tank 611 is connected to the pressure stabilizing module 62 through the water supply pump 612. The pressure stabilizing module 62 is connected in series in the secondary side pipeline 21.

[0051] like Figure 1 As shown, the water replenishment pump 612 is installed in the secondary side pipeline 21. When the water flow in the secondary side pipeline 21 decreases, the water replenishment pump 612 is activated to replenish water to the secondary side pipeline 21. The function of the water replenishment tank 611 is to store the replenished water. During replenishment, water from the outside first enters the water replenishment tank 611, and then is drawn away by the water replenishment pump 612 into the secondary side pipeline 21. The pressure stabilizing module 62 is a pressure stabilizing tank or an expansion tank. Its function is to stabilize the pressure in the system. Taking the pressure stabilizing tank as an example, the pressure stabilizing tank is equipped with water and air chambers. When the pressure in the water system increases, such as when the water pump starts or the water temperature rises, the water volume expands. At this time, the excess water enters the water chamber of the pressure stabilizing tank, compressing the gas in the air chamber. The compression of the air chamber absorbs the change in water volume, preventing the system pressure from being too high. Similarly, when the system pressure decreases, the gas in the air chamber expands, pushing the stored water back into the system, thus stabilizing the pressure.

[0052] Optionally, such as Figure 1 , Figure 5 and Figure 6As shown, the heat exchange unit includes a secondary side pipeline 21 and multiple circulating water pumps 63. The multiple circulating water pumps 63 are arranged in the secondary side pipeline 21 to control the flow rate of the liquid in the secondary side pipeline 21 and ensure that the liquid in the pipeline can circulate. For example, the circulating water pumps 63 can be arranged in series in the secondary side pipeline 21 or in parallel.

[0053] For example, one or more of the circulating water pumps 63 can be used as standby pumps, which can be activated when other pumps are damaged.

[0054] In other examples, heat exchangers 3 may also be arranged in series or in parallel, and the present invention does not limit this.

[0055] Optionally, such as Figure 1 and Figure 5 As shown, the heat exchange unit includes a secondary side pipe 21 and a filter 64, with the filter 64 connected in series in the secondary side pipe 21. A bypass pipe can be installed outside the filter 64. Valves are installed before and after the filter 64 and on the bypass pipe, allowing the water to flow either through the bypass pipe or in the branch where the filter 64 is located, by opening and closing the valves.

[0056] The filter 64 serves to filter the water, and the filter 64 is designed to be removable.

[0057] For example, two chucks are installed between the valves before and after the filter 64. The filter 64 can be disassembled by opening the chucks after the valves are closed and the water is no longer flowing in this branch.

[0058] For example, the filter 64 is connected by a fluid connector. In this case, the pipelines before and after the filter 64 are in the form of flexible hoses. The large-diameter fluid connector can be plugged in and water can be supplied at any time, and it can be disconnected and self-sealed. At this time, there is no need to install valves before and after the filter 64. When the filter 64 needs to be repaired, the fluid connector can be disconnected directly to disassemble the filter 64.

[0059] Optionally, such as Figure 4 As shown, the heat exchange unit also includes a cabinet 7, and the cooling module 4 is installed on the cabinet 7, which can improve the integration of the system, make the structure compact, and occupy less space.

[0060] Specifically, such as Figure 4 As shown, the cabinet 7 includes multiple uprights 71 and multiple crossbeams 72. The uprights 71 extend vertically, and the crossbeams 72 extend horizontally. The multiple uprights 71 enclose an installation space, and the crossbeams 72 are located between two adjacent uprights 71 to improve the structural strength of the cabinet 7.

[0061] For example, such as Figure 4As shown, there are four columns 71, and multiple threaded holes are provided on the four columns 71. The threaded holes are spaced 1U apart. In addition to being used in the heat exchange unit, the threaded holes can also be used to install servers.

[0062] Understandably, the cooling replenishment module 4 can be modularly installed in the cabinet 7, with pre-reserved space for water connectors, electrical connections, and installation. The liquid replenishment module is designed to be installed on the primary side and includes a throttling device 45, compressor 42, evaporator 43, condenser 44, and gas-liquid separator, among other supporting facilities. It has its own internal piping that connects the evaporator 43, condenser 44, compressor 42, and throttling device 45. Once refrigerant is added to the internal piping, it can begin operation.

[0063] like Figure 1 and Figure 5 As shown, another embodiment of the liquid cooling system of the present invention includes: a heat exchange unit, a cooling tower and a cooling device. The heat exchange unit is the heat exchange unit of the present invention. The cooling tower is connected to the primary side component 1 in the heat exchange unit, and the secondary side component 2 in the heat exchange unit is connected to the cooling device for heat exchange.

[0064] According to an embodiment of the present invention, the liquid cooling system, since the primary side component 1 and the secondary side component 2 exchange heat through a heat exchanger 3, the heat exchanger 3 is at least one of a liquid-liquid heat exchanger and an air-liquid heat exchanger, thereby the heat exchange unit can transfer the cooling capacity of an external cold source to the cooling equipment. Its structural design is simple and its application range is wider.

[0065] The secondary side of a liquid cooling system can include both liquid cooling equipment and air cooling equipment to provide liquid cooling and air cooling for the data center, respectively. In this system, there is only one cold source on the primary side, so the water supply for the primary side of both air cooling and liquid cooling is from the same source and at the same temperature.

[0066] The liquid cooling section consists of two parts: The secondary coolant releases heat in the heat exchange unit, becoming a low-temperature coolant before entering the liquid cooling section to absorb heat from the server's main heat-generating components. It then re-enters the heat exchange unit to release heat again, becoming a low-temperature coolant once more. The air cooling section consists of the primary coolant entering the air cooling section to handle its heat load, and then returning to the cooling tower through the primary return water pipe.

[0067] There are multiple control methods for the water inlet control of the liquid cooling and air cooling sections.

[0068] For example, the liquid cooling system also includes air cooling equipment, and the heat exchange unit is connected in series with the air volume equipment. That is, the primary side pipeline 11 is connected to the air cooling equipment and the heat exchanger 3 in sequence along the flow direction of the coolant.

[0069] The inlet water temperature of the air-cooled equipment is T1, the return water temperature of the secondary side pipe 21 is T2, the supply water temperature of the primary side pipe 11 is T1g, and the return water temperature of the primary side pipe 11 is T1h; the supply water temperature of the secondary side pipe 21 is T2g, and the return water temperature of the secondary side pipe 21 is T2h.

[0070] When T1g < T1, the coolant from the cooling tower first enters the air-cooled equipment and then enters the heat exchanger 3.

[0071] When T1g > T1, the cooling module 4 in the heat exchange unit works to cool the coolant from the cooling tower. The cooled coolant first enters the air-cooled equipment and then enters the heat exchanger 3. This allows for precise control of the inlet water temperature of the liquid-cooled and air-cooled parts, which is beneficial to improving the cooling effect of the system.

[0072] In another example, when T1g > T1, the primary side liquid supply flow rate is increased by adjusting the water pump, and the supplementary cooling module 4 is started at the same time. After the temperature drops below the set temperature, the supplementary cooling module 4 is turned off, and the flow rate is adjusted according to the change of the set temperature.

[0073] In another example, the primary side liquid supply flow rate is first increased by adjusting the water pump, while the supplementary cooling module 4 is turned off. The liquid supply flow rate is then adjusted to the maximum before the supplementary cooling module 4 is turned on again.

[0074] When T2g > T2, control the primary side water pump to increase the primary side flow rate until the temperature returns to below T2.

[0075] In another example, the activation and deactivation of the cooling replenishment module 4 is controlled by setting the temperature T and the fluid temperature between the outlet of the air-cooled equipment and the inlet of the cooling equipment. When the temperature is greater than T, the cooling replenishment module 4 is activated to replenish the cooling.

[0076] In another example, the inlet water temperature of the air-cooled equipment and the inlet water temperature of the cooling equipment are jointly controlled, and each is set with a limit value. If either temperature exceeds its respective temperature setting value, the supplementary cooling module 4 is activated.

[0077] Optionally, the liquid cooling system also includes an air-cooled device. The primary side piping 11 includes a first branch and a second branch connected in parallel. The first branch is connected to the air-cooled device, and the second branch is connected to the heat exchanger 3. This allows for precise control of the inlet water temperature of both the liquid cooling and air-cooled sections, which helps improve the system's cooling effect.

[0078] In the example above, the water supply from the primary side is divided into two branches: one part enters the air-cooled equipment, and the other part enters the plate heat exchanger 3 in the heat exchange unit. The cooling supplement device can be installed only at the branch end leading to the air-cooled equipment, or it can be installed in the main pipe of the primary side water supply line 211. In this case, the control logic is as follows: the cooling supplement module 4 is activated based on the inlet water temperature of the air-cooled equipment. When the inlet water temperature is higher than the set temperature, the cooling supplement module 4 is activated to provide cooling supplementation.

[0079] In another example, the activation of the cooling module 4 and the regulation of the primary side flow are controlled by the outlet air temperature of the air-cooled equipment.

[0080] Optionally, the liquid cooling system also includes a power module and a management module. The power module, as a power conversion device for external power supply and component power supply in the heat exchange unit, can convert external input electricity into voltage conditions usable by the internal equipment. The management module, in conjunction with sensors installed in various parts of the liquid cooling system, monitors the required data and displays it on a screen for manual adjustment.

[0081] It is understood that the liquid cooling system in this embodiment of the invention optimizes the original two sets of cold sources, air cooling and liquid cooling, into one set of cold source, which can solve the system control problem of the optimized single cold source technology, as well as the energy-saving problem caused by the excessive redundancy of the inlet water temperature used in the current air cooling equipment.

[0082] The cabinet 7 of the liquid cooling system in this embodiment of the invention is designed to accommodate servers through structural innovation, thereby saving development costs and shortening the delivery cycle.

[0083] The heat exchange unit of the liquid cooling system in this embodiment of the invention can save an external cold source through the innovative design of the supplementary cooling module 4, while still meeting the cooling capacity requirements of the refrigeration equipment.

[0084] The cooling water reuse primary side pipeline 11 of the heat exchange unit of the liquid cooling system in this embodiment of the invention is provided by the cooling water replenishment module 4, which eliminates the need to set up related cooling water pipelines, saving costs and making it possible to implement the cooling water replenishment module 4 technology.

[0085] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0086] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0087] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0088] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0089] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0090] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A heat exchange unit, characterized in that, include: The primary side assembly (1), the secondary side assembly (2), and the heat exchanger (3) are provided. The primary side assembly (1) is used to connect to an external cold source, and the secondary side assembly (2) is used to connect to a refrigeration device. The primary side assembly (1) and the secondary side assembly (2) exchange heat through the heat exchanger (3). The heat exchanger (3) is at least one of a liquid-liquid heat exchanger and a wind-liquid heat exchanger.

2. The heat exchange unit according to claim 1, characterized in that, The heat exchange unit further includes a cooling module (4), which has a cooling circuit (41) that exchanges heat with the coolant in at least one of the primary side assembly (1) and the secondary side assembly (2).

3. The heat exchange unit according to claim 2, characterized in that, The cooling module (4) further includes a compressor (42), an evaporator (43) and a condenser (44). The cooling circuit (41) is connected to the refrigerant side of the evaporator (43), the refrigerant side of the condenser (44) and the compressor (42). The coolant side of the evaporator (43) is connected to the primary side assembly (1) or the secondary side assembly (2).

4. The heat exchange unit according to claim 3, characterized in that, The primary side assembly (1) includes a primary side pipeline (11), the heat exchanger (3) is a liquid-liquid heat exchanger, the primary side pipeline (11) is connected to the liquid-liquid heat exchanger, and the cooling liquid side of the evaporator (43) is connected to the primary side pipeline (11).

5. The heat exchange unit according to claim 3, characterized in that, The secondary side component (2) includes a water supply pipe (211) and a return water pipe (212), both of which are connected to the heat exchanger (3). The coolant side of the evaporator (43) is connected to the water supply pipe (211).

6. The heat exchange unit according to claim 3, characterized in that, The primary side assembly (1) includes a primary side pipeline (11), the heat exchanger (3) is a liquid-liquid heat exchanger, and the heat exchange unit also includes a heat exchange branch pipe (5). The heat exchange branch pipe (5) is connected to the coolant side of the condenser (44), the inlet end of the heat exchange branch pipe (5) is connected to the inlet end of the primary side pipeline (11), and the outlet end of the heat exchange branch pipe (5) is connected to the outlet end of the primary side pipeline (11).

7. The heat exchange unit according to claim 3, characterized in that, The cooling module (4) also includes a throttling device (45), which is connected in series in the cooling circuit (41), and the throttling device (45), the compressor (42), the evaporator (43) and the condenser (44) are integrated together.

8. The heat exchange unit according to any one of claims 1-7, characterized in that, The primary side component (1) and the heat exchanger (3) are constructed as an integrated module, which is detachably connected to the secondary side component (2).

9. The heat exchange unit according to any one of claims 1-7, characterized in that, The secondary side component (2) includes a secondary side pipeline (21), a water supply module (61), and a pressure stabilizing module (62). The water supply module (61) includes a water supply tank (611) and a water supply pump (612). The water supply tank (611) is connected to the pressure stabilizing module (62) through the water supply pump (612). The pressure stabilizing module (62) is connected in series in the secondary side pipeline (21). And / or, the heat exchange unit includes a secondary side pipeline (21) and a plurality of circulating water pumps (63), wherein the plurality of circulating water pumps (63) are disposed in the secondary side pipeline (21); And / or, the heat exchange unit includes a secondary side pipe (21) and a filter (64), the filter (64) being connected in series in the secondary side pipe (21).

10. A liquid cooling system, characterized in that, include: A heat exchange unit, wherein the heat exchange unit is any one of claims 1-9, and the primary side component (1) in the heat exchange unit is connected to the cooling tower; The secondary side component (2) in the heat exchange unit is connected to the cooling equipment to exchange heat with it.

11. The liquid cooling system according to claim 10, characterized in that, The liquid cooling system also includes an air cooling device. The primary side component (1) is connected in sequence to the air cooling device and the heat exchanger (3) in the heat exchange unit along the flow direction of the coolant. The inlet water temperature of the air cooling device is T1, and the supply water temperature of the primary side component (1) is T1g. When T1g < T1, the coolant from the cooling tower first enters the air-cooled equipment and then enters the heat exchanger (3); When T1g > T1, the cooling module (4) in the heat exchange unit works to cool the coolant from the cooling tower. The cooled coolant first enters the air-cooled equipment and then enters the heat exchanger (3).

12. The liquid cooling system according to claim 10, characterized in that, The liquid cooling system also includes an air-cooled device. The primary side component (1) includes a first branch and a second branch connected in parallel. The first branch is connected to the air-cooled device, and the second branch is connected to the heat exchanger (3) in the heat exchange unit.

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