Refrigerating system, refrigerating machine and data center

Abstract

The embodiment of the utility model provides a refrigerating system, a refrigerator and a data center, the refrigerating system comprises an air cooling system and a liquid cooling system, the refrigerating system further comprises a heat exchange plate, and the heat exchange plate is connected between the input end and the output end of an air cooling condenser so as to receive a working medium flowing through the air cooling condenser; and the heat exchange plate is used for heat exchange between a working medium flowing out of the air-cooled condenser and a working medium flowing through the liquid-cooled heat exchanger. According to the refrigerating system, the air cooling system can supplement cold energy to the liquid cooling system, and extra investment is reduced. According to the data center, the number of air-liquid mixed cooling system equipment can be greatly reduced, field engineering and engineering productization are reduced, and the system reliability is improved. In addition, according to the data center, a CDU and a primary pipeline can be removed, and the initial investment and installation cost of a cooling system are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation, and in particular to a refrigeration system, a refrigerator and a data center. Background Art

[0002] The data center in the related technology includes an air cooling system and a liquid cooling system. The air cooling system is used to cool a part of the heat source in the data center, and the liquid cooling system is used to cool another part of the heat source in the data center. Since the heat generation of the heat source in the data center changes dynamically, the cooling effect of the air cooling system and the liquid cooling system on the heat source may be poor sometimes, and sometimes it may lead to excess cooling capacity, resulting in waste. Utility Model Content

[0003] The embodiments of the present application provide a refrigeration system, a refrigerator and a data center, so as to reduce the energy consumption of the refrigeration system and improve the refrigeration effect of the refrigeration system.

[0004] In a first aspect, an embodiment of the present application provides a refrigeration system, which includes an air-cooling system and a liquid-cooling system. The air-cooling system includes an air-cooled evaporator and an air-cooled condenser. The output end of the air-cooled condenser is connected to the input end of the air-cooled evaporator, and the input end of the air-cooled condenser is connected to the output end of the air-cooled evaporator; the liquid-cooling system includes a liquid-cooled heat exchanger; the refrigeration system also includes a heat exchange plate, the heat exchange plate includes an air-cooling input end and an air-cooling output end connected to the air-cooling system, and a liquid-cooling input end and a liquid-cooling output end connected to the liquid-cooling system, the air-cooling input end is connected to the output end of the air-cooled condenser, the air-cooling output end is connected to the input end of the air-cooled condenser, the liquid-cooling input end and the liquid-cooling output end are connected to a pipeline connected to the liquid-cooled heat exchanger, and the heat exchange plate is used for heat exchange between a working fluid flowing into the heat exchange plate from the air-cooled condenser and a working fluid flowing into the heat exchange plate from the liquid-cooled heat exchanger. In this embodiment, when the temperature of the working fluid flowing out of the air-cooled condenser is lower than the temperature of the working fluid flowing through the liquid-cooled condenser, the air-cooled system can be used to supplement the cooling of the liquid-cooled system. On the contrary, when the temperature of the working fluid flowing out of the air-cooled condenser is higher than the temperature of the working fluid flowing through the liquid-cooled condenser, the liquid-cooled system can be used to supplement the cooling of the air-cooled system. The working fluid flowing out of the air-cooled condenser is heat-exchanged with the working fluid flowing through the liquid-cooled heat exchanger through the heat exchange plate, so that the air-cooled system and the liquid-cooled system can dynamically supplement the cooling of each other, which can effectively deal with the problem of dynamic changes in the heat source's calorific value, effectively reduce the energy consumption of the air-cooled system and the liquid-cooled system, and improve the cooling effect of the refrigeration system in this embodiment. Moreover, since the working fluid flowing into the heat exchange plate from the air-cooled condenser and the working fluid flowing into the heat exchange plate from the liquid-cooled heat exchanger are directly heat-exchanged in the heat exchange plate, the heat exchange efficiency can be effectively improved, so as to improve the cooling efficiency of the air-cooled system to the liquid-cooled system, or the cooling efficiency of the liquid-cooled system to the air-cooled system.

[0005] In some embodiments, the air-cooling system further includes an input trunk line connected to the output end of the air-cooling condenser and an output trunk line connected to the input end of the air-cooling condenser, the input end of the air-cooling evaporator and the air-cooling input end of the heat exchange plate are both connected to the output trunk line, and the output end of the air-cooling evaporator and the air-cooling output end of the heat exchange plate are both connected to the input trunk line. The working fluid flowing out of the air-cooling condenser in this embodiment flows from the input trunk line to the air evaporator and the heat exchange plate, respectively. At this time, the working fluid flowing through the air-cooling evaporator can be heat exchanged with the air-cooling heat source, and the working fluid flowing through the heat exchange plate is used to exchange heat with the working fluid on the liquid cooling system side. Moreover, the temperature and pressure of the working fluid flowing out of the air-cooled condenser flowing to the air-cooled evaporator and the heat exchanger plate are the same, so that the air-cooled evaporator and the heat exchanger plate will not affect each other, that is, the heat exchange between the working fluid and the air-cooled heat source when flowing through the air-cooled evaporator will not cause the heat exchange efficiency between the working fluid and the working fluid on the liquid cooling system side when flowing through the heat exchanger plate to become higher or lower. Similarly, the heat exchange between the working fluid on the cooling system side and the working fluid on the liquid cooling system side when flowing through the heat exchanger plate will not affect the heat exchange efficiency between the working fluid and the air-cooled heat source when flowing through the air-cooled evaporator. Therefore, the air-cooled system in this embodiment, after being connected to the heat exchanger plate, will not affect the refrigeration stability of the air-cooled system.

[0006] In some embodiments, the air cooling system further includes an air cooling throttle valve for gasifying the liquid working medium, and the air cooling throttle valve is connected to the pipeline connecting the output trunk line and the air cooling input end. In this embodiment, the heat exchange throttle valve can instantly reduce the pressure of the liquid working medium flowing through the heat exchange throttle valve, so that the liquid working medium is converted into a gaseous working medium after passing through the heat exchange throttle valve. In this process, a large amount of heat will be absorbed, so that the temperature of the gaseous working medium flowing to the heat exchange plate through the heat exchange throttle valve is greatly reduced, so as to improve the cooling capacity of the air cooling system to the liquid cooling system.

[0007] In some embodiments, the input end of the air-cooled evaporator is connected to the output end of the air-cooled condenser, the output end of the air-cooled evaporator is connected to the air-cooled input end of the heat exchange plate, and the air-cooled output end of the heat exchange plate is connected to the input end of the air-cooled condenser. In this embodiment, since the working fluid flowing out of the air-cooled condenser first enters the air-cooled evaporator, heat exchange with the air-cooled heat source has been performed before the working fluid enters the heat exchange plate. After the heat exchange with the air-cooled heat source, if the temperature of the working fluid flowing to the heat exchange plate is still low, the heat exchange plate can be used to supplement the cooling of the liquid cooling system to fully exploit the refrigeration efficiency of the air cooling system. In this embodiment, without affecting the refrigeration of the air cooling system, the refrigeration efficiency of the air cooling system can be fully exploited to supplement the cooling of the liquid cooling system.

[0008] In some embodiments, the air-cooling system also includes an air-cooled compressor, a compression branch arranged in parallel with the air-cooled compressor, and a compression check valve connected to the compression branch. The input end of the compression branch is respectively connected to the input end of the air-cooled compressor and the output end of the air-cooled evaporator through a pipeline, and the output end of the compression branch is respectively connected to the output end of the air-cooled compressor and the input end of the air-cooled condenser through a pipeline. The flow direction of the compression check valve is from the input end of the compression branch to the output end of the compression branch. When the working fluid flows through the air-cooled compressor, the temperature of the working fluid flowing into the heat exchange plate from the air-cooled input end is lower than the temperature flowing into the heat exchange plate from the liquid-cooled input end; when the working fluid flows through the compression branch, the temperature of the working fluid flowing into the heat exchange plate from the air-cooled input end is higher than the temperature flowing into the heat exchange plate from the liquid-cooled input end. In this embodiment, when the heat output of the air-cooled heat source is relatively small, the air-cooled compressor can be turned off. At this time, the working fluid flowing out of the air-cooled evaporator will bypass the air-cooled compressor through the compression branch and flow to the air-cooled condenser to form a loop consisting of the air-cooled condenser, the air-cooled throttle valve, and the air-cooled evaporator. Since the heat output of the air-cooled heat source is relatively small, the air-cooled heat source can be refrigerated without the need for the air-cooled compressor to work, and supplementary cooling can be achieved through the liquid cooling system. Moreover, since the air-cooled compressor stops working, the electric energy for the air-cooled compressor can be saved. In the air-cooled compressor working room, the refrigeration effect is better, and supplementary cooling of the liquid cooling system can be achieved.

[0009] In some embodiments, the air cooling system further includes a waste heat plate exchanger for connecting to a heat recovery device, the input end of the waste heat plate exchanger is connected to the output end of the air-cooled evaporator, and the output end of the waste heat plate exchanger is connected to the input end of the air-cooled evaporator. In this embodiment, the working fluid absorbs a large amount of heat from the air-cooled heat source when passing through the air-cooled evaporator, and then when passing through the waste heat plate exchanger, the working fluid exchanges the heat from the air-cooled heat source with an external heat recovery device or an external heating device to provide heat to the external heat recovery device or the external heating device. This can improve the utilization efficiency of heat, and when used in a data center, it can improve the PUE of the data center.

[0010] In some embodiments, the liquid cooling system includes a liquid pump, a liquid cooling heat exchanger for heat dissipation, a liquid cooling input pipeline, and a liquid cooling output pipeline; one end of the liquid cooling input pipeline is connected to the input end of the liquid cooling heat exchanger, one end of the liquid cooling output pipeline is connected to the output end of the liquid cooling heat exchanger, and the liquid cooling input end and liquid cooling output end of the heat exchanger plate are both connected to the liquid cooling output pipeline. In this embodiment, since the liquid-cooled input end and the liquid-cooled output end of the heat exchanger plate are connected to the liquid-cooled output pipeline through pipelines, the temperature of the working fluid flowing from the liquid-cooled heat exchanger to the heat exchanger plate is lower than the temperature flowing into the liquid-cooled heat exchanger. The working fluid with a lower temperature flowing from the liquid-cooled heat exchanger to the heat exchanger plate and the working fluid with a lower temperature flowing from the air-cooled condenser to the heat exchanger plate are supplemented with cooling in the heat exchanger plate, which can more effectively reduce the temperature of the working fluid flowing out of the liquid-cooled heat exchanger and flowing to the external liquid-cooled heat source end, or effectively reduce the temperature of the working fluid flowing from the air-cooled condenser to the air-cooled evaporator, so as to improve the heat exchange efficiency between the air-cooled system and the air-cooled heat source, or improve the heat exchange efficiency between the liquid-cooled system and the liquid-cooled heat source, thereby improving the refrigeration efficiency of the air-cooled system or the liquid-cooled system.

[0011] In some embodiments, the liquid cooling system further includes a control valve, which is connected to the liquid cooling output pipeline, and the liquid cooling input end and the liquid cooling output end of the heat exchange plate are respectively connected to the two ends of the control valve. In this embodiment, since the liquid cooling input end and the liquid cooling output end of the heat exchange plate are respectively connected to the two ends of the control valve, when the control valve is opened, since the flow resistance directly flowing to the liquid cooling heat source end is lower than the flow resistance flowing to the heat exchange plate, most of the working fluid flowing out of the liquid cooling condenser flows from the control valve to the liquid cooling heat source end, and almost no or a small part flows to the heat exchange plate. At this time, it can be used in a scenario where the air cooling system and the liquid cooling system are not required for supplementary cooling. When the control valve is closed, the working fluid flowing out of the liquid cooling condenser needs to bypass the control valve to flow to the heat exchange plate, and then flow to the liquid cooling heat source end. At this time, it can be used in a scenario where the air cooling system and the liquid cooling system are required for supplementary cooling.

[0012] In a second aspect, an embodiment of the present application provides a refrigerator, comprising a housing and a refrigeration system as described in any one of the first aspects above, wherein the refrigeration system is located in the housing. In this embodiment, since the air cooling system, the liquid cooling system, and the heat exchange plate are all located in the housing, it is beneficial to commercialize the refrigerator in this embodiment, and it can be produced and sold independently, and the number of refrigerators can be configured according to demand, thereby improving production efficiency and assembly efficiency when assembled with an external heat source.

[0013] In some embodiments, the refrigeration system further includes a shower pump, a spray pool, and a spray head. The shower pump is disposed in the spray pool and drives the working fluid in the spray pool to spray the working fluid from the spray head to the air cooling system and the liquid cooling system. In this embodiment, water is sprayed to the air-cooled condenser and the liquid-cooled heat exchanger through the spray head to improve the heat dissipation efficiency of the air-cooled condenser and the liquid-cooled heat exchanger.

[0014] In a third aspect, an embodiment of the present application provides a data center, comprising a computer room, multiple heat sources located in the computer room, and multiple refrigerators as described in the second aspect above, wherein the multiple refrigerators are connected to the outside of the computer room and to the multiple heat sources for cooling the multiple heat sources.

[0015] In a fourth aspect, an embodiment of the present application provides a data center, the data center includes a computer room, multiple air-cooled heat sources, multiple liquid-cooled heat sources, and multiple refrigeration systems as described in any one of the first aspects above, the multiple air-cooled heat sources and the multiple liquid-cooled heat sources are arranged in the computer room, the computer room is provided with multiple air duct openings and multiple liquid-cooled interfaces, the multiple air-cooled systems are connected to the multiple air duct openings for heat exchange with the multiple air-cooled heat sources; the liquid-cooled heat exchangers of the multiple liquid-cooled systems are directly connected to the refrigeration plate exchangers of the liquid-cooled heat sources through multiple liquid-cooled interfaces. In this embodiment, since there is no need to set up a cooling tower or other structure between the refrigeration plate exchanger of the liquid-cooled heat source and the liquid-cooled heat exchanger of the liquid-cooled system, but the liquid-cooled heat exchanger is directly connected to the refrigeration plate exchanger of the liquid-cooled heat source through a pipeline, the heat exchange steps between the liquid-cooled system and the cooling tower can be reduced, and heat exchange is directly performed with the liquid-cooled heat source, reducing the number of heat exchanges, so as to improve the heat exchange efficiency, and thus improve the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0017] Figure 1 A schematic diagram of a data center provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of a refrigeration system provided in an embodiment of the present application;

[0019] Figure 3 for Figure 2 A schematic diagram of an air cooling system of a refrigeration system in an embodiment of the present invention;

[0020] Figure 4 for Figure 2 A schematic diagram of a liquid cooling system of a refrigeration system in an embodiment of the present invention;

[0021] Figure 5 for Figure 2 A schematic diagram of another liquid cooling system of the refrigeration system in the embodiment;

[0022] Figure 6 for Figure 2 A specific structural schematic diagram of the refrigeration system of the embodiment;

[0023] Figure 7 for Figure 2Another specific structural schematic diagram of the refrigeration system of the embodiment;

[0024] Figure 8 A schematic diagram of the structure of a refrigerator provided in an embodiment of the present application;

[0025] Fig. 9 A structural diagram of another data center provided in an embodiment of the present application. Description of the drawings:

[0027] 1000, data center; 1, computer room; 1a, air duct opening; 1b, liquid cooling interface; 2, heat source; 2a, air cooling heat source; 2b, liquid cooling heat source; 3, refrigeration system; 100, refrigerator; 101, shell; 102, accommodation space; 103, shower pump; 104, shower head; 105, shower pool; 106, air duct interface; 107, liquid cooling output interface; 108, liquid cooling input interface; 10, air cooling system; 11, air cooling evaporator; 12, air cooling condenser; 13, fan; 14, air cooling compressor; 15, air cooling throttle valve; 16, compression branch ; 17. Compression check valve; 18. Air-cooled pump; 19. Pump branch; 20. Pump check valve; 21. Waste heat plate exchanger; 22. Liquid storage tank; 23. Input main line; 24. Output main line; 30. Liquid cooling system; 31. Liquid pump; 32. Liquid-cooled heat exchanger; 33. Liquid-cooled input pipeline; 34. Liquid-cooled output pipeline; 35. Control valve; 36. Liquid-cooled throttle valve; 37. Liquid-cooled evaporator; 38. Liquid-cooled compressor; 50. Heat exchanger plate; 51. Air-cooled input end; 52. Air-cooled output end; 53. Liquid-cooled input end; 54. Liquid-cooled output end; 60. Heat exchange throttle valve. DETAILED DESCRIPTION

[0028] The following first explains some terms involved in the embodiments of the present application.

[0029] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] In this specification, the terms "perpendicular", "parallel", etc. are explained.

[0031] Vertical: The verticality defined in this application is not limited to an absolute vertical intersection relationship (angle of 90 degrees). It allows for non-absolute vertical intersection relationships caused by factors such as assembly tolerance, design tolerance, and influence of structural flatness. It also allows for errors in a small angle range. For example, the assembly error range of 80 to 100 degrees can be understood as a vertical relationship.

[0032] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, which allows for situations where the absolute parallelism is not caused by factors such as assembly tolerance, design tolerance, and influence of structural flatness. These situations will lead to the sliding fitting part and the first door panel not being absolutely parallel, but this application also defines this situation as parallelism.

[0033] Figure 1 A schematic diagram of a data center 1000 provided in an embodiment of the present application shows an application scenario of a refrigeration system 3 in the data center 1000.

[0034] Reference Figure 1 The data center 1000 of the embodiment of the present application includes a computer room 1, in which a plurality of heat sources 2 are arranged, some of which are air-cooled heat sources 2a that need to be cooled by air cooling, such as at least one IT device (such as a server, a storage device, a network device) arranged in the computer room 1, and some of which are liquid-cooled heat sources 2b that need to be cooled by liquid cooling, such as a power supply device (such as an uninterruptible power supply or other energy storage batteries, etc.) arranged in the computer room 1.

[0035] Since air-cooled heat sources 2a such as IT equipment and liquid-cooled heat sources 2b such as power supply equipment will generate a large amount of heat during operation, in order to ensure efficient operation of the air-cooled heat sources 2a and the liquid-cooled heat sources 2b, it is necessary to dissipate heat from the air-cooled heat sources 2a and the liquid-cooled heat sources 2b in a timely manner. Therefore, the data center 1000 in the embodiment of the present application also includes a refrigeration system 3, which is used to perform air cooling on the air-cooled heat sources 2a and to perform liquid cooling on the liquid-cooled heat sources 2b.

[0036] Specifically, the refrigeration system 3 includes an air cooling system 10 for air cooling and dissipating heat for the air cooling heat source 2a and a liquid cooling system 30 for dissipating heat for the liquid cooling heat source 2b.

[0037] It should be noted that in the embodiment of the present application, the data center 1000 may be a micro-module data center 1000, a prefabricated data center 1000, or a floor or room formed by a building for placing IT equipment. Based on the above different forms of data centers 1000, the refrigeration system 3 may be placed inside the computer room 1 of the data center 1000, or outside the computer room 1, or may be partially located inside the computer room 1 and partially located outside the computer room 1.

[0038] In some implementation scenarios, the data center 1000 includes not only IT equipment and power supply devices, but also fire-fighting equipment and other supporting equipment.

[0039] Figure 2 A schematic diagram of a refrigeration system 3 provided in an embodiment of the present application. The refrigeration system 3 in this embodiment can be applied not only to the data center 1000, but also to other equipment requiring temperature control, such as energy storage devices, energy storage prefabricated cabins, etc.

[0040] Reference Figure 2 The refrigeration system 3 includes an air cooling system 10 , a liquid cooling system 30 and a heat exchange plate 50 .

[0041] The air cooling system 10 is used to dissipate heat from the air cooling heat source 2a by means of gas-liquid heat exchange, for example, by blowing cold air that has exchanged heat with the air cooling system 10 toward the air cooling heat source 2a through the fan 13 to exchange heat with the air cooling heat source 2a.

[0042] The liquid cooling system 30 is used to dissipate heat to the liquid cooling heat source 2b by liquid-liquid heat exchange. For example, the working fluid flowing out of the liquid cooling system 30 exchanges heat with the working fluid flowing in the refrigeration plate of the liquid cooling heat source 2b, thereby achieving heat exchange between the working fluid of the liquid cooling system 30 and the liquid cooling heat source 2b.

[0043] The heat exchange plate 50 is used for heat exchange between the working fluid of the air cooling system 10 and the working fluid of the liquid cooling system 30 to achieve thermal complementarity between the air cooling system 10 and the liquid cooling system 30, so as to improve the cooling effect of the air cooling system 10 or the cooling effect of the liquid cooling system 30 in some usage scenarios.

[0044] For example, in the following scenario, when the heat generated by the air-cooling heat source 2a used for cooling in the air-cooling system 10 is less than the cooling capacity of the air-cooling system 10, and the heat generated by the liquid-cooling heat source 2b used for cooling in the liquid-cooling system 30 is greater than the cooling capacity of the liquid-cooling system 30, the air-cooling system 10 can supplement cooling to the liquid-cooling system 30 through the heat exchange plate 50 to improve the cooling capacity of the liquid-cooling system 30.

[0045] For example, in the following scenario, when the heat generated by the air-cooling heat source 2a used for cooling in the air-cooling system 10 is greater than the cooling capacity of the air-cooling system 10, and the heat generated by the liquid-cooling heat source 2b used for cooling in the liquid-cooling system 30 is less than the cooling capacity of the liquid-cooling system 30, the liquid-cooling system 30 can supplement cooling to the air-cooling system 10 through the heat exchange plate 50 to improve the cooling capacity of the liquid-cooling system 30.

[0046] Specifically, the heat exchange plate 50 is connected to the air cooling system 10 through a pipeline, and the heat exchange plate 50 is connected to the liquid cooling system 30 through a pipeline, so that the air cooling system 10 can supplement cooling for the liquid cooling system 30 or the liquid cooling system 30 can supplement cooling for the air cooling system 10 through the heat exchange plate 50.

[0047] Figure 3 for Figure 2 FIG. 1 is a schematic diagram of an air cooling system 10 of the refrigeration system 3 in the embodiment.

[0048] Reference Figure 3 The air-cooling system 10 includes an air-cooling evaporator 11 and an air-cooling condenser 12. The working fluid flowing through the air-cooling evaporator 11 is used for heat exchange with the air-cooling heat source 2a to absorb the heat emitted by the air-cooling heat source 2a. The air-cooling condenser 12 is used to dissipate heat for the working fluid flowing through the air-cooling condenser 12, for example, the working fluid of the air-cooling condenser 12 may be dissipated by spraying, the working fluid of the air-cooling condenser 12 may be cooled by direct heat exchange with external air, or the working fluid of the air-cooling condenser 12 may be dissipated by liquid-liquid heat exchange.

[0049] Specifically, the input end of the air-cooled condenser 12 is connected to the output end of the air-cooled evaporator 11 through a pipeline, and the output end of the air-cooled condenser 12 is connected to the input end of the air-cooled evaporator 11 through a pipeline, so that the air-cooled condenser 12 and the air-cooled evaporator 11 form a loop, so that the heat of the air-cooled heat source 2a absorbed by the air-cooled evaporator 11 in the heat exchange with the air-cooled heat source 2a can be dissipated through the air-cooled condenser 12, and such a cycle can achieve effective heat dissipation of the air-cooled heat source 2a.

[0050] In order to improve the heat exchange efficiency between the air-cooled heat source 2a and the air-cooled evaporator 11, in some embodiments, the air-cooling system 10 also includes a fan 13, which is arranged on the air-cooled evaporator 11 or next to the air-cooled evaporator 11. The fan 13 is used to blow the gas around the air-cooled evaporator 11 that exchanges heat with the air-cooled evaporator 11 toward the air-cooled heat source 2a, so as to increase the circulation speed of the gas between the air-cooled evaporator 11 and the air-cooled heat source 2a, thereby improving the heat exchange efficiency between the working fluid flowing through the air-cooled evaporator 11 and the air-cooled heat source 2a, thereby improving the cooling effect of the air-cooling system 10 on the air-cooled heat source 2a.

[0051] It is understandable that when the air-cooled condenser 12 dissipates heat through heat exchange with the outside air, a suction fan can also be set at the air-cooled condenser 12 to increase the rate at which the outside air circulates on the surface of the air-cooled condenser 12, thereby improving the heat dissipation efficiency of the air-cooled condenser 12 for the working fluid flowing through the air-cooled condenser 12.

[0052] In order to improve the refrigeration effect of the air cooling system 10, in some embodiments, the air cooling system 10 also includes an air cooling compressor 14 and an air cooling throttle valve 15. The output end of the air cooling compressor 14 is connected to the input end of the air cooling condenser 12 through a pipeline, and the input end of the air cooling compressor 14 is connected to the output end of the air cooling evaporator 11 through a pipeline. The air cooling throttle valve 15 is arranged on the pipeline between the input end of the air cooling evaporator 11 and the output end of the air cooling condenser 12. In this way, the air cooling compressor 14, the air cooling condenser 12, the air cooling throttle valve 15 and the air cooling evaporator 11 are connected through pipelines to form a loop.

[0053] The air-cooled compressor 14 is a core component for the refrigeration system 3 to exert its refrigeration function. The mechanical form of the air-cooled compressor 14 can be a scroll machine, a screw machine, or a speed turbine machine, which can achieve an efficient compression and expansion process. During the compression process, the working fluid enters the air-cooled compressor 14 from the low-pressure port of the air-cooled compressor 14, and the compressed working fluid flows out from the high-pressure port of the air-cooled compressor 14. Among them, the working fluid flowing through the air-cooled compressor 14, the air-cooled evaporator 11 and the air-cooled condenser 12 in the refrigeration system 3 may include water, ammonia, Freon, R12 (difluoromethane), R22 (difluoromethane), R134a (tetrafluoroethane), R407c, R410a, R290 (propane) or R32 (difluoromethane), etc.

[0054] In this embodiment, the gaseous working medium entering the air-cooled compressor 14 is compressed into a gaseous working medium with a higher pressure and temperature, and then flows to the air-cooled condenser 12. The air-cooled condenser 12 can cool the gaseous working medium flowing through the air-cooled condenser 12 and liquefy the gaseous working medium into a liquid working medium. When the liquid working medium flows through the air-cooled throttle valve 15, the air-cooled throttle valve 15 can instantly reduce the pressure of the liquid working medium flowing through the air-cooled throttle valve 15, so that the liquid working medium can be converted into a gaseous working medium after passing through the air-cooled throttle valve 15. A large amount of heat will be absorbed in this process, so that the liquid working medium flowing to the air-cooled throttle valve 15 through the air-cooled throttle valve 15 can be cooled. The temperature of the gaseous working medium in the cold evaporator 11 is greatly reduced. When the low-temperature gaseous working medium passes through the air-cooled evaporator 11, it can exchange heat with the heat generated by the air-cooled heat source 2a, and absorb a large amount of heat from the air-cooled heat source 2a to achieve cooling of the air-cooled heat source 2a. After absorbing the heat from the air-cooled heat source 2a, the temperature of the gaseous working medium flowing out of the air-cooled evaporator 11 increases and flows to the air-cooled compressor 14, thus completing one cycle. Through the arrangement of the air-cooled compressor 14 and the air-cooled throttle valve 15, the heat exchange efficiency of the air-cooled heat source 2a can be improved, and the cooling efficiency of the air-cooled heat source 2a can be improved.

[0055] In order to improve the diversity of refrigeration modes, in some embodiments, the air cooling system 10 also includes a compression branch 16 arranged in parallel with the air cooling compressor 14 and a compression check valve 17 connected to the compression branch 16. Specifically, the input end of the compression branch 16 is respectively connected to the input end of the air cooling compressor 14 and the output end of the air cooling evaporator 11 through a pipeline, and the output end of the compression branch 16 is respectively connected to the output end of the air cooling compressor 14 and the input end of the air cooling condenser 12 through a pipeline. The flow direction of the compression check valve 17 is from the input end of the compression branch 16 to the output end of the compression branch 16. The compression check valve 17 can limit the working fluid from the output end of the compression branch 16 to the input end of the compression branch 16. In this embodiment, when the heat generation of the air-cooled heat source 2a is relatively small, the air-cooled compressor 14 can be turned off. At this time, the working fluid flowing out of the air-cooled evaporator 11 will bypass the air-cooled compressor 14 through the compression branch 16 and flow to the air-cooled condenser 12 to form a loop consisting of the air-cooled condenser 12, the air-cooled throttle valve 15, and the air-cooled evaporator 11. Since the heat generation of the air-cooled heat source 2a is relatively small, the cooling of the air-cooled heat source 2a can be achieved without the need for the air-cooled compressor 14 to work. Moreover, since the air-cooled compressor 14 stops working, the electric energy supplied to the air-cooled compressor 14 can be saved.

[0056] For the convenience of description, the cooling mode of the air cooling system 10 is set to a mechanical cooling mode when the air cooling compressor 14 is working, and to a natural cooling mode when the air cooling compressor 14 is not working.

[0057] In order to improve the cooling effect of the air cooling system 10 on the air cooling heat source 2a in the natural cooling mode, in some embodiments, the air cooling system 10 further includes an air cooling pump 18, a pump branch 19 arranged in parallel with the air cooling pump 18, and a pump check valve 20 connected to the pump branch 19. The air cooling pump 18 is used to drive the working medium to flow so as to increase the flow rate of the working medium. The connection mode of the air cooling pump 18 is relatively diverse, and it can be connected in series to the circuit where the air cooling compressor 14, the air cooling condenser 12, and the air cooling evaporator 11 are located.

[0058] For example, in some embodiments, the input end of the air-cooled pump 18 is connected to the input end of the pump branch 19 and the output end of the air-cooled condenser 12 through pipelines, and the output end of the air-cooled pump 18 is connected to the output end of the pump branch 19 and the input end of the air-cooled evaporator 11 through pipelines, respectively. The pump check valve 20 is used to allow the working medium to flow from the input end of the pump branch 19 to the output end, but not from the output end of the pump branch 19 to the input end of the pump branch 19. In this embodiment, when the air-cooled compressor 14 stops working and the air-cooled pump 18 is working, the circulation loop of the working medium is flowing out of the air-cooled condenser 12 into the air-cooled pump 18, then flowing out of the air-cooled pump 18 into the air-cooled throttle valve 15, then flowing out of the air-cooled throttle valve 15 into the air-cooled evaporator 11, and then entering the air-cooled condenser 12 through the compression branch 16, so as to form a cycle, which can improve the cooling effect in the natural cooling mode. When the air-cooled compressor 14 is working and the air-cooled pump 18 is not working, the circulation loop of the working medium is that it flows out of the air-cooled condenser 12 through the pump branch 19 and enters the air-cooled throttle valve 15, then flows out of the air-cooled throttle valve 15 and enters the air-cooled evaporator 11, and then passes through the air-cooled compressor 14 and enters the air-cooled condenser 12, thus forming a cycle, and this is the mechanical refrigeration mode.

[0059] In some embodiments, the air cooling system 10 further includes a waste heat plate exchanger 21, which is connected in parallel with the air cooling condenser 12. Specifically, the output end of the air cooling compressor 14 is connected to the input end of the air cooling condenser 12 and the waste heat plate exchanger 21 through a pipeline, and the air cooling evaporator 11 is connected to the output end of the air cooling condenser 12 and the output end of the waste heat plate exchanger 21 through a pipeline, and the waste heat plate exchanger 21 can be connected to an external heat recovery device or directly connected to an external heating device. In the mechanical refrigeration mode, the working medium absorbs a large amount of heat from the air cooling heat source 2a when passing through the air cooling evaporator 11, and then when passing through the waste heat plate exchanger 21, the working medium exchanges the heat of the air cooling heat source 2a with an external heat recovery device or an external heating device to provide heat to the external heat recovery device or the external heating device. In this way, the utilization efficiency of heat can be improved, and when used in the data center 1000, the PUE (Power Usage Effectiveness) of the data center 1000 can be improved.

[0060] It is understandable that, in some embodiments, an external heat recovery device or an external heating device may be directly connected to the air-cooled condenser 12 to perform heat exchange with the working fluid flowing through the air-cooled condenser 12 .

[0061] In some other embodiments, the waste heat plate exchanger 21 and the air-cooled condenser 12 may be connected in series.

[0062] It is understandable that the air cooling system 10 may further include a gas-liquid separator connected between the input end of the air cooling compressor 14 and the output end of the air cooling evaporator 11. The air cooling system 10 may further include a liquid storage tank 22 connected between the input end of the air cooling evaporator 11 and the output end of the air cooling condenser 12.

[0063] It should be noted that the air cooling system 10 of the refrigeration system 3 in the embodiment of the present application can be as follows: Figure 3 The air cooling system 10 of any one of the embodiments in the examples.

[0064] Figure 4 for Figure 2 FIG. 4 is a schematic diagram of a liquid cooling system 30 of the refrigeration system 3 in the embodiment.

[0065] Reference Figure 4 The liquid cooling system 30 includes a liquid pump 31, a liquid cooling heat exchanger 32, a liquid cooling input pipeline 33 and a liquid cooling output pipeline 34. One end of the liquid cooling input pipeline 33 is connected to the input end of the liquid cooling heat exchanger 32, and one end of the liquid cooling output pipeline 34 is connected to the output end of the liquid cooling heat exchanger 32. The liquid pump 31 is connected to the liquid cooling input pipeline 33 or the liquid cooling output pipeline 34. The other end of the liquid cooling input pipeline 33 and the other end of the liquid cooling output pipeline 34 are used to connect to the refrigeration plate exchanger on the liquid cooling heat source 2b, such as directly connected to the refrigeration plate exchanger of the liquid cooling heat source 2b of the data center 1000, so that the working fluid flowing through the liquid cooling system 30 can achieve heat exchange with the cooling medium flowing in the refrigeration plate exchanger of the liquid cooling heat source 2b. Specifically, the liquid pump 31 can drive the working fluid to circulate in the loop formed by the liquid-cooled heat exchanger 32, the liquid pump 31, and the refrigeration plate exchanger at the end of the liquid-cooled heat source 2b. When the working fluid flowing in the liquid cooling system 30 flows through the refrigeration plate exchanger at the end of the liquid-cooled heat source 2b, heat exchange is achieved with the cooling medium flowing through the refrigeration plate exchanger, so that the working fluid of the liquid cooling system 30 absorbs the heat dissipated by the liquid-cooled heat source 2b and flows back to the liquid-cooled heat exchanger 32. When the working fluid flows through the liquid-cooled heat exchanger 32, a large amount of heat is dissipated, so that the temperature of the working fluid flowing out of the liquid-cooled heat exchanger 32 is greatly reduced, so as to facilitate heat exchange with the cooling medium of the refrigeration plate exchanger at the end of the liquid-cooled heat source 2b again, so that the liquid cooling system 30 can cool the liquid-cooled heat source 2b.

[0066] In this embodiment, the liquid-cooled heat exchanger 32 is used to dissipate heat for the working medium flowing through the liquid-cooled heat exchanger 32, for example, the working medium flowing through the liquid-cooled heat exchanger 32 may be dissipated by spraying, or the working medium of the liquid-cooled heat exchanger 32 may be cooled by direct heat exchange with external gas, or the working medium of the liquid-cooled heat exchanger 32 may be dissipated by liquid-liquid heat exchange. Specifically, the liquid-cooled heat exchanger 32 may be a liquid-cooled condenser or a countercurrent cooling tower.

[0067] In order to improve the heat dissipation performance of the liquid-cooled heat exchanger 32, in some embodiments, when the liquid-cooled heat exchanger 32 dissipates heat by heat exchange with the external air, a suction fan can also be provided at the liquid-cooled heat exchanger 32 to increase the rate at which the external air circulates on the surface of the liquid-cooled heat exchanger 32, thereby improving the heat dissipation efficiency of the liquid-cooled heat exchanger 32 for the working fluid flowing through the liquid-cooled heat exchanger 32.

[0068] For ease of control, in some embodiments, the liquid cooling system 30 also includes a control valve 35, which is connected to the liquid cooling output pipeline 34 to shut down the heat exchange between the liquid cooling system 30 and the liquid cooling heat source 2b when there is no need to dissipate heat from the liquid cooling heat source 2b, so as to reduce energy consumption.

[0069] It should be noted that the working fluid flowing in the liquid cooling system 30 may include water, ammonia, Freon, R12 (difluoromethane), R22 (difluoromethane), R134a (tetrafluoroethane), R407c, R410a, R290 (propane) or R32 (difluoromethane), etc.

[0070] Figure 5 for Figure 2 FIG. 3 is a schematic diagram of another liquid cooling system 30 of the refrigeration system 3 in the embodiment. Figure 4 Liquid cooling system 30, Figure 5 The liquid cooling system 30 in the embodiment replaces the liquid pump 31 with a liquid cooling compressor 38 , and adds a liquid cooling throttle valve 36 and a liquid cooling evaporator 37 , so that mechanical refrigeration can be performed to improve the refrigeration effect of the liquid cooling system 30 .

[0071] Reference Figure 5 The liquid cooling system 30 includes a liquid cooling throttle valve 36, a liquid cooling evaporator 37, a liquid cooling compressor 38, and Figure 4The liquid-cooled heat exchanger 32, the control valve 35, the liquid-cooled input pipeline 33 and the liquid-cooled output pipeline 34 in the embodiment, wherein one end of the liquid-cooled input pipeline 33 is connected to the input end of the liquid-cooled heat exchanger 32, one end of the liquid-cooled output pipeline 34 is connected to the output end of the liquid-cooled heat exchanger 32, the other end of the liquid-cooled input pipeline 33 is connected to the output end of the evaporator, the other end of the liquid-cooled output pipeline 34 is connected to the input end of the evaporator, the liquid-cooled compressor 38 is connected to the liquid-cooled input pipeline 33, the liquid-cooled throttle valve 36 and the control valve 35 are both connected to the liquid-cooled output pipeline 34, thus forming a circulation loop of the liquid-cooled throttle valve 36, the liquid-cooled evaporator 37, the liquid-cooled compressor 38 and the liquid-cooled heat exchanger 32, wherein the working principles of the liquid-cooled throttle valve 36, the liquid-cooled evaporator 37 and the liquid-cooled compressor 38 are the same as those of the liquid-cooled throttle valve 36, the liquid-cooled evaporator 37 and the liquid-cooled compressor 38. Figure 3 The air-cooled throttle valve 15, the air-cooled evaporator 11, and the air-cooled compressor 14 in the embodiment are the same as those in the embodiment of FIG. Figure 3 The mechanical refrigeration mode of the air cooling system 10 will not be described in detail here.

[0072] Specifically, the liquid-cooled evaporator 37 also includes an input end and an output end on the heat source side. The input end and the output end on the heat source side of the liquid-cooled evaporator 37 are used to connect to the liquid cooling pipeline at the liquid-cooled heat source 2b end, so that the cooling medium used for refrigeration at the liquid-cooled heat source 2b end flows into the liquid-cooled evaporator 37, so as to realize heat exchange between the working fluid in the liquid cooling system 30 and the cooling medium at the liquid-cooled heat source 2b end through the liquid-cooled evaporator 37, and then absorb the heat generated by the liquid-cooled heat source 2b to cool the liquid-cooled heat source 2b.

[0073] It should be noted that the liquid cooling system 30 is not limited to the above Figure 4 and Figure 5 The liquid cooling system 30 in the description can be referred to as the liquid cooling system 30 as long as it is used to dissipate heat from the liquid cooling heat source 2b.

[0074] Figure 6 for Figure 2 A specific structural schematic diagram of the refrigeration system 3 of the embodiment of FIG. Figure 3 The specific structure of the air cooling system 10 in the embodiment is as follows Figure 4 The liquid cooling system 30 and Figure 5 The partial structure of the liquid cooling system 30 in the embodiment also shows the specific connection relationship between the air cooling system 10 and the liquid cooling system 30 and the heat exchange plate 50 .

[0075] Reference Figure 6 In some embodiments, the heat exchange plate 50 is connected between the input end and the output end of the air-cooled condenser 12 to receive the working fluid flowing through the air-cooled condenser 12. Since the working fluid flowing through the air-cooled condenser 12 will undergo heat dissipation, the temperature of the working fluid flowing out of the air-cooled condenser 12 will be effectively reduced.

[0076] The heat exchange plate 50 is used to perform heat exchange between the working fluid flowing out of the air-cooled condenser 12 and the working fluid flowing through the liquid-cooled heat exchanger 32. When the temperature of the working fluid flowing out of the air-cooled condenser 12 is lower than the temperature of the working fluid flowing through the liquid-cooled condenser, the air-cooling system 10 can provide cooling to the liquid-cooling system 30. On the contrary, when the temperature of the working fluid flowing out of the air-cooled condenser 12 is higher than the temperature of the working fluid flowing through the liquid-cooled condenser, the liquid-cooling system 30 can provide cooling to the air-cooling system 10. In this embodiment, the working fluid flowing out of the air-cooled condenser 12 is heat exchanged with the working fluid flowing through the liquid-cooled heat exchanger 32 through the heat exchange plate 50. Through the dynamic cooling of the air-cooling system 10 and the liquid-cooling system 30, the problem of dynamic changes in the heat generation of the heat source can be effectively dealt with, the energy consumption of the air-cooling system 10 and the liquid-cooling system 30 can be effectively reduced, and the cooling effect of the refrigeration system 3 in this embodiment can also be improved.

[0077] It is understandable that in order to perform heat exchange between the working fluid flowing out of the air-cooled condenser 12 and the working fluid flowing through the liquid-cooled heat exchanger 32, the working fluid flowing out of the air-cooled condenser 12 and the working fluid flowing out of the liquid-cooled heat exchanger 32 can be simultaneously directed to the same heat exchange plate 50, and then heat exchange is directly performed in the heat exchange plate 50. Alternatively, the working fluid flowing out of the air-cooled condenser 12 and the working fluid flowing out of the liquid-cooled heat exchanger 32 can be respectively directed to one heat exchange plate 50, and then heat exchange is performed using air flowing through the surfaces of the two heat exchange plates 50 as an intermediate medium.

[0078] For example, in some embodiments, the heat exchange plate 50 includes an air-cooling input end 51 and an air-cooling output end 52 connected to the air-cooling system 10, and a liquid-cooling input end 53 and a liquid-cooling output end 54 connected to the liquid-cooling system 30. The air-cooling input end 51 is connected to the output end of the air-cooling condenser 12, the air-cooling output end 52 is connected to the input end of the air-cooling condenser 12, and the liquid-cooling input end 53 and the liquid-cooling output end 54 are connected to the pipeline connected to the liquid-cooling heat exchanger 32, so that the working medium flowing from the air-cooling condenser 12 into the heat exchange plate 50 and the working medium flowing from the liquid-cooling heat exchanger 32 into the heat exchange plate 50 are heat exchanged. In this embodiment, since the working medium flowing from the air-cooling condenser 12 into the heat exchange plate 50 and the working medium flowing from the liquid-cooling heat exchanger 32 into the heat exchange plate 50 are directly heat exchanged in the heat exchange plate 50, the heat exchange efficiency can be effectively improved, so as to improve the cooling efficiency of the air-cooling system 10 to the liquid-cooling system 30, or the cooling efficiency of the liquid-cooling system 30 to the air-cooling system 10.

[0079] In some specific embodiments, the heat exchange plate 50 and the air-cooled evaporator 11 are arranged in parallel. Specifically, the air-cooling system 10 includes an input trunk line 23 and an output trunk line 24. One end of the input trunk line 23 is connected to the output end of the air-cooled condenser 12, and one end of the output trunk line 24 is connected to the input end of the air-cooled condenser 12. The input end of the air-cooled evaporator 11 and the air-cooled input end 51 of the heat exchange plate 50 are both connected to the other end of the input trunk line 23, and the output end of the air-cooled evaporator 11 and the air-cooled output end 52 of the heat exchange plate 50 are both connected to the other end of the output trunk line 24. In this embodiment, the working fluid flowing out of the air-cooled condenser 12 flows from the input trunk line 23 to the air evaporator and the heat exchange plate 50, respectively. At this time, the working fluid flowing through the air-cooled evaporator 11 can be heat-exchanged with the air-cooled heat source 2a, and the working fluid flowing through the heat exchange plate 50 is used to heat-exchange with the working fluid on the liquid cooling system 30 side. Moreover, the temperature and pressure of the working fluid flowing out of the air-cooled condenser 12 and flowing to the air-cooled evaporator 11 and the heat exchanger plate 50 are the same, so that the air-cooled evaporator 11 and the heat exchanger plate 50 will not affect each other, that is, the heat exchange between the working fluid and the air-cooled heat source 2a when flowing through the air-cooled evaporator 11 will not cause the heat exchange efficiency between the working fluid and the working fluid on the liquid cooling system 30 side when flowing through the heat exchanger plate 50 to become higher or lower. Similarly, the heat exchange between the working fluid on the cooling system side and the working fluid on the liquid cooling system 30 side when flowing through the heat exchanger plate 50 will not affect the heat exchange efficiency between the working fluid and the air-cooled heat source 2a when flowing through the air-cooled evaporator 11, so that the air cooling system 10 in this embodiment, after being connected to the heat exchanger plate 50, will not affect the refrigeration stability of the air cooling system 10.

[0080] In some embodiments, a heat exchange throttle valve 60 is provided on the pipeline connecting the air cooling input end 51 of the heat exchange plate and the input main line 23. The heat exchange throttle valve 60 can instantly reduce the pressure of the liquid working medium flowing through the heat exchange throttle valve 60, so that the liquid working medium is converted into a gaseous working medium after passing through the heat exchange throttle valve 60. A large amount of heat will be absorbed in this process, so that the temperature of the gaseous working medium flowing to the heat exchange plate 50 through the heat exchange throttle valve 60 is greatly reduced, so as to improve the cooling capacity of the air cooling system 10 to the liquid cooling system 30.

[0081] It is understandable that the air cooling system 10 in this embodiment may also include Figure 3 The connection relationship between the air-cooled compressor 14, the air-cooled throttle valve 15, the compression branch 16 or the pump branch 19 in the embodiment will not be described in detail here.

[0082] In some embodiments, the liquid cooling input end 53 and the liquid cooling output end 54 of the heat exchange plate 50 are connected to the liquid cooling output pipeline 34 through pipelines. In this embodiment, the working fluid flowing out of the liquid cooling condenser can flow to the liquid cooling heat source 2b or the liquid cooling heat source 2b through the liquid cooling output pipeline 34. Figure 5In the embodiment of the liquid-cooled evaporator 37, the working fluid flowing out of the liquid-cooled condenser can also flow to the heat exchange plate 50 through the liquid-cooled output pipeline 34, and then flow back to the liquid-cooled output pipeline 34 and flow to the liquid-cooled heat source 2b or Figure 5 Liquid-cooled evaporator 37 in the embodiment. In this embodiment, since the liquid-cooled input end 53 and the liquid-cooled output end 54 of the heat exchange plate 50 are connected to the liquid-cooled output pipeline 34 through pipelines, the temperature of the working medium flowing from the liquid-cooled heat exchanger 32 to the heat exchange plate 50 is lower than the temperature flowing into the liquid-cooled heat exchanger 32, and the working medium with a lower temperature flowing from the liquid-cooled heat exchanger 32 to the heat exchange plate 50 and the working medium with a lower temperature flowing from the air-cooled condenser 12 to the heat exchange plate 50 are supplemented with cooling in the heat exchange plate 50, which can more effectively reduce the temperature of the liquid-cooled heat exchanger 32 flowing to the liquid-cooled heat source 2b or the liquid-cooled heat source 2b. Figure 5 The temperature of the working fluid of the liquid-cooled evaporator 37 in the embodiment can effectively reduce the temperature of the working fluid flowing from the air-cooled condenser 12 to the air-cooled evaporator 11, so as to improve the heat exchange efficiency between the air-cooled system 10 and the air-cooled heat source 2a, or improve the heat exchange efficiency between the liquid-cooled system 30 and the liquid-cooled heat source 2b, thereby improving the refrigeration efficiency of the air-cooled system 10 or the liquid-cooled system 30.

[0083] In order to improve the operability of the refrigeration system 3, supplementary cooling is performed when supplementary cooling is required, and supplementary cooling is stopped when supplementary cooling is not required. In some embodiments, the control valve 35 is connected to the liquid cooling output pipeline 34, and the liquid cooling input end 53 and the liquid cooling output end 54 of the heat exchange plate 50 are respectively connected to the two ends of the control valve 35, that is, the control valve 35 and the heat exchange plate 50 are arranged in parallel. In this embodiment, since the liquid cooling input end 53 and the liquid cooling output end 54 of the heat exchange plate 50 are respectively connected to the two ends of the control valve 35, when the control valve 35 is opened, since the flow resistance directly flowing to the end of the liquid cooling heat source 2b is lower than the flow resistance flowing to the heat exchange plate 50, most of the working fluid flowing out of the liquid cooling condenser flows from the control valve 35 to the end of the liquid cooling heat source 2b, and almost no or a small part flows to the heat exchange plate 50. At this time, it can be used in the scene where the air cooling system 10 and the liquid cooling system 30 are not required to perform supplementary cooling. When the control valve 35 is closed, the working fluid flowing out of the liquid-cooled condenser needs to bypass the control valve 35 and flow to the heat exchange plate 50, and then flow to the liquid-cooled heat source 2b. This can be used in scenarios where the air cooling system 10 and the liquid cooling system 30 are required for supplementary cooling.

[0084] Of course, in order to improve the operability of the refrigeration system 3, a control valve can also be set on the pipeline connecting the heat exchange plate 50 and the liquid cooling output pipeline 34 to control whether the cooling function of the air cooling system 10 and the liquid cooling system 30 is running.

[0085] Figure 7 for Figure 2 Another specific structural diagram of the refrigeration system 3 of the embodiment is shown in FIG. Figure 6Refrigeration system 3, Figure 7 The air-cooled evaporator 11 and the heat exchange plate 50 in the air-cooled system 10 of the refrigeration system 3 are connected in series.

[0086] Reference Figure 7 In some embodiments, the input end of the air-cooled evaporator 11 is connected to the output end of the air-cooled condenser 12, the output end of the air-cooled evaporator 11 is connected to the air-cooled input end 51 of the heat exchange plate 50, and the air-cooled output end 52 of the heat exchange plate 50 is connected to the input end of the air-cooled condenser 12. In this embodiment, the working fluid flowing out of the air-cooled condenser 12 first flows into the air-cooled evaporator 11, then flows out of the air-cooled evaporator 11 and enters the heat exchange plate 50, and then flows out of the heat exchange plate 50 and then flows into the air-cooled condenser 12, thus forming a cycle. Since the working fluid flowing out of the air-cooled condenser 12 first enters the air-cooled evaporator 11, the working fluid has been heat exchanged with the air-cooled heat source 2a before entering the heat exchange plate 50. After the heat exchange with the air-cooled heat source 2a, if the temperature of the working fluid flowing to the heat exchange plate 50 is still low, the heat exchange plate 50 can be used to supplement the cooling to the liquid cooling system 30, so as to fully exploit the refrigeration energy efficiency of the air-cooled system 10. In this embodiment, under the premise of not affecting the refrigeration of the air cooling system 10 , the refrigeration energy efficiency of the air cooling system 10 can be fully exploited to supplement the cooling of the liquid cooling system 30 .

[0087] It is understandable that the air cooling system 10 in this embodiment may also include Figure 3 The connection relationship between the air-cooled compressor 14, the air-cooled throttle valve 15, the compression branch 16 or the pump branch 19 in the embodiment will not be described in detail here.

[0088] Figure 8 A schematic structural diagram of a refrigerator 100 provided in an embodiment of the present application.

[0089] Reference Figure 8 The refrigerator 100 includes a shell 101 and a refrigeration system 3 as in any of the above embodiments, wherein the refrigeration system 3 includes an air cooling system 10, a liquid cooling system 30 and a heat exchange plate 50. The air cooling system 10, the liquid cooling system 30 and the heat exchange plate 50 can refer to the previous embodiments and will not be repeated here.

[0090] The shell 101 is arranged to form an accommodating space 102, and the air cooling system 10, the liquid cooling system 30 and the heat exchange plate 50 are all located in the accommodating space 102. Since the air cooling system 10 and the liquid cooling system 30 are both assembled in the accommodating space 102, the refrigerator 100 in this embodiment can be commercialized and can be independently produced and sold. The number of refrigerators 100 can be configured according to demand, thereby improving production efficiency and assembly efficiency when assembled with an external heat source.

[0091] In some embodiments, the refrigerator 100 further includes a shower pump 103, a shower head 104, and a shower pool 105 disposed on the bottom wall of the housing 101. The shower pump 103 is disposed in the shower pool 105. The air-cooled condenser 12 (such as Figure 3 ) and the liquid cooling heat exchanger 32 of the liquid cooling system 30 (such as Figure 4 or Figure 5 ) are provided above each of the air-cooled condensers 12 and the liquid-cooled heat exchanger 32, and the spray head 104 is connected to the spray pump 103 through a pipeline, so that the working medium (such as water) can be sprayed to the air-cooled condenser 12 and the liquid-cooled heat exchanger 32 through the spray head 104 to improve the heat dissipation efficiency of the air-cooled condenser 12 and the liquid-cooled heat exchanger 32.

[0092] In some embodiments, the housing 101 is provided with an air duct interface 106, a liquid cooling output interface 107 and a liquid cooling input interface 108, and the air cooling evaporator 11 (such as Figure 3 ) is connected to the air duct interface 106, the air duct interface 106 is used to connect to the air duct port 1a of the external equipment that needs to be refrigerated, the liquid cooling output interface 107 and the liquid cooling output pipeline 34 (such as Figure 4 or Figure 5 ) is connected to the liquid cooling input interface 108 and the liquid cooling input pipeline 33 (such as Figure 4 or Figure 5 ) connection, the liquid cooling output interface 107 and the liquid cooling input interface 108 are used to connect to the liquid cooling interface 1b of the external equipment that needs refrigeration.

[0093] Fig. 9 A structural diagram of another data center 1000 provided in an embodiment of the present application.

[0094] Reference Figure 8 and Fig. 9 The data center 1000 includes a computer room 1, a plurality of heat sources 2 located in the computer room 1, and Figure 8 In the embodiment, the multiple refrigerators 100 are connected to the multiple heat sources 2 to provide cooling to the multiple heat sources 2. The data center 1000 in this embodiment can configure the number of refrigerators 100 according to the demand, and the multiple refrigerators 100 can be installed near the heat sources 2 to be cooled, thereby reducing the difficulty of assembling the refrigerators 100 and the data center 1000.

[0095] The multiple heat sources 2 include multiple air-cooled heat sources 2a and multiple liquid-cooled heat sources 2b, the air-cooled heat sources 2a are cooled by the air-cooling system 10 of the refrigerator 100, and the liquid-cooled heat sources 2b are cooled by the liquid-cooling system 30 of the refrigerator 100. One refrigerator 100 can cool at least one air-cooled heat source 2a and one liquid-cooled heat source 2b simultaneously.

[0096] It is understandable that the refrigerator 100 can be installed on the outer side wall of the machine room 1 , for example, on the top wall and multiple side walls of the data center 1000 .

[0097] In some embodiments, the machine room 1 of the data center 1000 is provided with an air duct opening 1a for connecting to the air duct interface 106 of the refrigerator 100, so that the air cooling system 10 of the refrigerator 100 can cool the air cooling heat source 2a in the machine room 1. The machine room 1 of the data center 1000 also includes a liquid cooling interface 1b, which is connected to the refrigeration plate of the liquid cooling heat source 2b of the data center 1000. The liquid cooling interface 1b is used to connect to the liquid cooling output interface 107 and the liquid cooling input interface 108 of the refrigerator 100, so that the liquid cooling system 30 can cool the liquid cooling heat source 2b.

[0098] The data center 1000 in this embodiment can be connected to multiple miniaturized refrigerators 100, so that the refrigerator 100 can be directly connected to the heat source 2 in the data center 1000 for cooling. For example, there is no need to set up a cooling tower or other structure between the refrigeration plate exchanger of the liquid-cooled heat source 2b and the liquid-cooled heat exchanger 32 of the liquid cooling system 30. Instead, the liquid-cooled heat exchanger 32 is directly connected to the refrigeration plate exchanger of the liquid-cooled heat source 2b through a pipeline. This can reduce the heat exchange steps between the liquid cooling system 30 and the cooling tower, and directly exchange heat with the liquid-cooled heat source 2b, thereby reducing the number of heat exchanges to improve the heat exchange efficiency and thereby improve the cooling effect.

[0099] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A refrigeration system, It is characterized in that The refrigeration system includes an air cooling system and a liquid cooling system. The air cooling system includes an air cooling evaporator for cooling and an air cooling condenser for heat dissipation. The output end of the air cooling condenser is connected to the input end of the air cooling evaporator, and the input end of the air cooling condenser is connected to the output end of the air cooling evaporator. The liquid cooling system includes a liquid cooling heat exchanger. The refrigeration system also includes a heat exchange plate, including an air-cooled input end and an air-cooled output end and a liquid-cooled input end and a liquid-cooled output end. The air-cooled input end is connected to the output end of the air-cooled condenser, the air-cooled output end is connected to the input end of the air-cooled condenser, the liquid-cooled input end and the liquid-cooled output end are connected to a pipeline connected to the liquid-cooled heat exchanger, and the heat exchange plate is used for heat exchange between the working fluid flowing into the heat exchange plate from the air-cooled condenser and the working fluid flowing into the heat exchange plate from the liquid-cooled heat exchanger.

2. The refrigeration system according to claim 1, It is characterized in that The output end of the air-cooled condenser is connected to the input main road, the input end of the air-cooled condenser is connected to the output main road, the input end of the air-cooled evaporator and the air-cooled input end of the heat exchange plate are both connected to the output main road, and the output end of the air-cooled evaporator and the air-cooled output end of the heat exchange plate are both connected to the input main road.

3. The refrigeration system according to claim 2, It is characterized in that The air cooling system also includes an air cooling throttle valve for gasifying the liquid working medium, and the air cooling throttle valve is connected to the pipeline connecting the output trunk line and the air cooling input end.

4. The refrigeration system according to any one of claims 1 to 3, It is characterized in that The input end of the air-cooled evaporator is connected to the output end of the air-cooled condenser, the output end of the air-cooled evaporator is connected to the air-cooled input end of the heat exchange plate, and the air-cooled output end of the heat exchange plate is connected to the input end of the air-cooled condenser.

5. The refrigeration system according to any one of claims 1 to 4, It is characterized in that The air-cooling system also includes an air-cooling compressor, a compression branch arranged in parallel with the air-cooling compressor, and a compression check valve connected to the compression branch. The input end of the compression branch is respectively connected to the input end of the air-cooling compressor and the output end of the air-cooled evaporator through a pipeline, and the output end of the compression branch is respectively connected to the output end of the air-cooling compressor and the input end of the air-cooled condenser through a pipeline. The flow direction of the compression check valve is from the input end of the compression branch to the output end of the compression branch. When the working medium flows through the air-cooling compressor, the temperature of the working medium flowing into the heat exchange plate from the air-cooling input end is lower than the temperature of the working medium flowing into the heat exchange plate from the liquid-cooling input end; when the working medium flows through the compression branch, the temperature of the working medium flowing into the heat exchange plate from the air-cooling input end is higher than the temperature of the working medium flowing into the heat exchange plate from the liquid-cooling input end.

6. The refrigeration system according to any one of claims 1 to 5, It is characterized in that The air cooling system also includes a waste heat plate exchanger for connecting to a heat recovery device, wherein the input end of the waste heat plate exchanger is connected to the output end of the air cooling evaporator, and the output end of the waste heat plate exchanger is connected to the input end of the air cooling evaporator.

7. The refrigeration system according to any one of claims 1 to 6, It is characterized in that The liquid cooling system includes a liquid pump, a liquid cooling heat exchanger for heat dissipation, a liquid cooling input pipeline and a liquid cooling output pipeline; one end of the liquid cooling input pipeline is connected to the input end of the liquid cooling heat exchanger, one end of the liquid cooling output pipeline is connected to the output end of the liquid cooling heat exchanger, and the liquid cooling input end and liquid cooling output end of the heat exchange plate are both connected to the liquid cooling output pipeline.

8. The refrigeration system according to claim 7, It is characterized in that The liquid cooling system further comprises a control valve, which is connected to the liquid cooling output pipeline, and the liquid cooling input end and the liquid cooling output end of the heat exchange plate are respectively connected to two ends of the control valve.

9. A refrigerator, It is characterized in that It comprises a shell and a refrigeration system as described in any one of claims 1 to 8, wherein the refrigeration system is located in the shell.

10. The refrigerator according to claim 9, It is characterized in that The refrigerator further comprises a shower pump, a shower pool and a shower head. The shower pump is arranged in the shower pool and drives the working medium in the shower pool to spray the working medium from the shower head to the air cooling system and the liquid cooling system.

11. A data center, It is characterized in that The data center includes a computer room, a plurality of heat sources in the computer room, and a plurality of refrigerators as described in claim 9 or 10, wherein the plurality of refrigerators are connected to the outside of the computer room and to the plurality of heat sources for providing cooling to the plurality of heat sources.

12. A data center, It is characterized in that The data center includes a computer room, multiple air-cooled heat sources, multiple liquid-cooled heat sources and multiple refrigeration systems as described in any one of claims 1 to 9 above, the multiple air-cooled heat sources and the multiple liquid-cooled heat sources are arranged in the computer room, the computer room is provided with multiple air duct openings and multiple liquid cooling interfaces, the multiple air-cooling systems are connected to the multiple air duct openings for heat exchange with the multiple air-cooled heat sources; the liquid-cooled heat exchangers of the multiple liquid cooling systems are directly connected to the refrigeration plates of the liquid-cooled heat sources through the multiple liquid cooling interfaces.

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