Cooling system

Abstract

The invention discloses a cooling system. The cooling system comprises a liquid cooling device, a heat exchange unit and a refrigeration unit. The liquid cooling device is used for immersing and cooling the electronic equipment in the liquid cooling device through a first medium; the heat exchange unit is arranged in the liquid cooling device and comprises a second medium channel; the second medium flows into a heat exchange unit arranged in the liquid cooling device through a second medium channel, and directly performs non-contact heat exchange with the first medium in the liquid cooling device; the refrigerating unit is used for cooling a second medium, and the second medium is cooling liquid. According to the technical scheme, the first medium in the liquid cooling device almost does not need to circulate outside the liquid cooling device and mainly flows in the liquid cooling device in an active or passive circulating mode, and therefore the usage amount and the loss amount of the first medium are further reduced.

Description

[0001] This application is a divisional application of the following application, with the application date of July 19, 2023, the application number 202310883548.4, and the invention name is Cooling system, cooling method and information processing facility. Technical Field

[0002] The present application relates to the field of cooling, and more particularly to a cooling system. Background Art

[0003] In the current Internet, big data, artificial intelligence, communications, computing, etc., various information processing facilities need to be set up, such as computing centers, data centers, base stations, computer rooms, servers, cabinets, chassis, etc. Traditionally, the cooling solutions for these information processing facilities usually use air cooling technology, that is, relying on fans to drive air flow, and using air to take away the heat generated by the equipment to achieve the cooling effect. However, the energy efficiency of this method is relatively low, resulting in its power consumption efficiency (PUE) being higher than the ideal state, and it cannot meet the needs of information processing facilities for efficient operation. Therefore, cold plate technology and immersion liquid cooling technology have been proposed in recent years.

[0004] Although the liquid cooling plate solution has improved the situation of air cooling technology to some extent, its application scope is limited because it cannot adapt to a variety of board cards with different designs.

[0005] Immersion cooling technology has attracted attention due to its superior cooling efficiency, but the need to exchange heat between the immersion medium and the refrigerant during application is a major challenge. This involves issues such as environmental protection, reliability, heat preservation, and leakage prevention. It is also necessary to ensure the reliability of large amounts of refrigerants and immersion medium during long-distance transmission, and the engineering cost will increase accordingly.

[0006] Therefore, how to solve at least some of the problems existing in immersion cooling technology to a certain extent while meeting the heat dissipation requirements of information processing facilities becomes a technical problem that needs to be solved in this application. Summary of the invention

[0007] In view of this, the present application proposes a cooling system for providing reliable cooling to equipment to be cooled in an information processing facility (eg, a liquid cooling device in a data center).

[0008] According to the present application, a cooling system is proposed, characterized in that the cooling system comprises a liquid cooling device, a heat exchange unit and a refrigeration unit;

[0009] The liquid cooling device is used to immerse and cool the electronic equipment located in the liquid cooling device through a first medium;

[0010] The heat exchange unit is arranged in the liquid cooling device, and the heat exchange unit includes a second medium channel; the second medium flows into the heat exchange unit arranged inside the liquid cooling device through the second medium channel, and directly performs non-contact heat exchange with the first medium in the liquid cooling device;

[0011] The refrigeration unit is configured to cool the second medium, which is a cooling liquid.

[0012] Optionally, the heat exchange unit includes a heat exchange cabinet and a heat exchanger arranged in the heat exchange cabinet, the heat exchanger includes a first medium channel and a second medium channel, and the liquid cooling device includes a first medium inlet and a first medium outlet respectively connected to the first medium channel to circulate the first medium.

[0013] Optionally, the cooling system includes a plurality of the liquid cooling devices, wherein the first medium inlets of the plurality of the liquid cooling devices are respectively connected to the first tube and connected to the first medium channel of the heat exchanger through the first tube, and / or, the first medium outlets of the plurality of the liquid cooling devices are respectively connected to the second tube and connected to the first medium channel of the heat exchanger through the second tube.

[0014] Optionally, the heat exchange unit includes a plurality of the heat exchangers.

[0015] Optionally, the heat exchange unit includes a third pipe connecting outlets of the second medium channels of the plurality of heat exchangers and / or a fourth pipe connecting inlets of the second medium channels of the plurality of heat exchangers, and the third pipe and the fourth pipe are respectively connected to the refrigeration unit to circulate the second medium.

[0016] Optionally, the cooling system comprises a first circulation device for circulating the first medium and / or a second circulation device for circulating the second medium.

[0017] Optionally, the refrigeration unit is configured to cool the second medium by non-contact heat exchange between the refrigerant and the second medium.

[0018] Optionally, the refrigeration unit includes an evaporator and a condenser, and the evaporator includes a refrigerant channel and a cooling liquid channel that allow the refrigerant and the second medium to flow, respectively.

[0019] In addition, the present application also provides an information processing facility, which includes the above-mentioned cooling system, or uses the above-mentioned cooling method to cool the liquid cooling device.

[0020] According to the technical solution of the present application, the first medium in the liquid cooling device hardly needs to circulate outside the liquid cooling device, but can mainly circulate actively or passively in the liquid cooling device, thereby further reducing the usage and loss of the first medium.

[0021] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic implementation modes and descriptions of the present application are used to explain the present application. In the accompanying drawings:

[0023] Figure 1 is a schematic diagram of a cooling system according to an embodiment of the present application;

[0024] Figure 2 It is a schematic diagram of a cooling system according to another embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with the implementation modes.

[0026] According to one aspect of the present application, a cooling system is provided, wherein the cooling system includes a liquid cooling device 10, a heat exchange unit 20 and a refrigeration unit 30, the liquid cooling device 10 is used to cool the electronic equipment in the liquid cooling device 10 by immersing it in a first medium, the heat exchange unit 20 is configured to cool the first medium by non-contact heat exchange between a second medium and the first medium, and the refrigeration unit 30 is configured to cool the second medium, and the second medium is a coolant.

[0027] Using the cooling system of the present application, immersion cooling can be provided to electronic equipment through the first medium, and the first medium can then exchange heat through the second medium, and then cool the second medium through the refrigeration unit 30. In the cooling system of the present application, the second medium mainly needs to circulate between the heat exchange unit 20 and the refrigeration unit 30, which reduces the flow path and area of ​​the first medium used as the immersion medium, reduces the amount of the first medium as well as the corresponding insulation and anti-leakage measures as much as possible, and improves the reliability and stability of the system operation. Moreover, the first medium is a dielectric medium, and the cost is relatively high. By reducing the flow path of the first medium, the demand for the first medium and the loss during use can be reduced, thereby effectively controlling or reducing costs.

[0028] It is understandable that in the present application, the first medium only needs to flow in the liquid cooling device 10 and the first medium channel, and the refrigerant of the refrigeration unit 30 only needs to be transmitted within a limited range, and heat transfer is achieved by the circulation of the second medium. In other words, in the present application, the fluid that is transmitted in large quantities and over long distances is only the second medium. The second medium is a coolant, and the composition of the coolant is relatively safe, such as water or a liquid containing water, so there is no need to invest too much cost in insulation and leakage prevention. Moreover, in the process of large-scale and long-distance transmission, the coolant is significantly safer than immersion fluids and refrigerants.

[0029] The cooling system of the present application can be used in various appropriate application scenarios, for example, it can be used in various information processing facilities that require liquid cooling in the fields of the Internet, big data, artificial intelligence, communications, and computing, such as computing centers, data centers, base stations, computer rooms, servers, cabinets, chassis, etc., to provide immersion cooling for a large number of electronic components and equipment therein.

[0030] In the present application, the heat exchange unit 20 may be in an appropriate form to enable the first medium and the second medium to exchange heat in a non-contact manner. For example, the heat exchange unit 20 may include a second medium channel for circulating the second medium.

[0031] To be suitable for the arrangement and design of a data center, preferably, the heat exchange unit 20 may include a heat exchange cabinet 21 and a heat exchanger 22 disposed in the heat exchange cabinet 21, the heat exchanger 22 includes a first medium channel and a second medium channel, and the liquid cooling device 10 includes a first medium inlet and a first medium outlet respectively connected to the first medium channel to circulate the first medium. The heat exchange cabinet 21 is preferably made of a heat insulating material to avoid adverse effects on the ambient temperature.

[0032] When in use, the heat exchange cabinet 21 and the liquid cooling device 10 can be set at a position close to each other, such as in the machine room, to reduce the flow range of the first medium, and the refrigeration unit 30 can be set in an area in the machine room away from the liquid cooling device 10 and / or the heat exchange cabinet 21; or, the refrigeration unit 30 can be set outside the machine room for independent operation and maintenance. Of course, the heat exchange cabinet 21 and the liquid cooling device 10 can also be set in different rooms, that is, only the liquid cooling device 10 is set in the machine room so that the temperature of the machine room is not affected by the heat exchange unit 20, but the flow range of the first medium should be reduced as much as possible, for example, the heat exchange cabinet 21 can be set close to the outer wall of the machine room. Therefore, through the central mediating effect of the second medium between the first medium and the refrigeration unit, on the one hand, the amount and loss of the first medium in the liquid cooling device 10 can be reduced, and on the other hand, the relative position relationship between the refrigeration unit and the liquid cooling device can be arranged more conveniently, so that it can be flexibly applied to various application scenarios and meet the personalized layout requirements of different cooling systems.

[0033] In addition, the cooling system may include a plurality of the liquid cooling devices 10. Each of the liquid cooling devices 10 may dissipate heat for its first medium through a heat exchanger 22 in a corresponding heat exchange cabinet 21. For example, each liquid cooling device 10 may correspond to one or more specific heat exchange cabinets 21 to provide cooling for its first medium through the heat exchanger 22 in the corresponding heat exchange cabinet 21. The case where a liquid cooling device 10 corresponds to a specific heat exchange cabinet 21 includes forming a liquid cooling device group with a plurality of liquid cooling devices 10 and corresponding to a specific heat exchange cabinet 21. For example, in Figure 1 In the embodiment shown, the cooling system includes a liquid cooling device 10 and a corresponding heat exchange cabinet 21; Figure 2 In the illustrated embodiment, the cooling system includes four liquid cooling devices 10 and two heat exchange cabinets 21 . The two liquid cooling devices 10 form a liquid cooling device group, and each liquid cooling device group corresponds to a heat exchange cabinet 21 .

[0034] As another embodiment (not shown), the heat exchange unit 20 (heat exchanger) can be directly arranged in the liquid cooling device 10. Therefore, in this embodiment (the heat exchange cabinet can be omitted), the second medium flows into the heat exchange unit 20 inside the liquid cooling device 10 through the second medium channel, and then directly performs non-contact heat exchange with the first medium in the liquid cooling device, and then takes away the heat absorbed by the first medium in the liquid cooling device 10 from the heating electronic components. Then, the second medium is cooled by the refrigeration unit 30 and then circulated to the heat exchange unit 20 inside the liquid cooling device 10 to perform heat exchange with the first medium. In this embodiment, the first medium in the liquid cooling device 10 almost does not need to circulate outside the liquid cooling device, but mainly circulates actively or passively in the liquid cooling device, thereby further reducing the usage and loss of the first medium.

[0035] Preferably, the first medium flowing into and / or flowing out of the liquid cooling device 10 can be aggregated. Specifically, the first medium inlets of the plurality of liquid cooling devices 10 can be respectively connected to the first tube 23 and connected to the first medium channel of the heat exchanger 22 through the first tube 23, and / or, the first medium outlets of the plurality of liquid cooling devices 10 can be respectively connected to the second tube 24 and connected to the first medium channel of the heat exchanger 22 through the second tube 24. That is, the first tube 23 can be used as a pipeline for aggregating the first medium flowing into the plurality of liquid cooling devices 10, and the second tube 24 can be used as a pipeline for aggregating the first medium flowing out of the plurality of liquid cooling devices 10.

[0036] To improve heat dissipation efficiency, the heat exchange unit 20 may include a plurality of heat exchangers 22, so as to perform heat exchange cooling on the first medium through the plurality of heat exchangers 22. The plurality of heat exchangers 22 may be arranged in series or in parallel.

[0037] Preferably, a plurality of heat exchangers 22 may be arranged in parallel, for example Figure 2 As shown, the outlet of the first medium channel of each heat exchanger 22 is connected to a plurality of liquid cooling devices 10 through a first pipe 23, and the second pipe 24 of the inlet of the first medium channel of each heat exchanger is connected to a plurality of liquid cooling devices 10. Each heat exchanger 22 can also collect the first medium through a converging pipeline so that the first medium is fully mixed before entering the heat exchanger 22 and / or after leaving the heat exchanger 22, so that the temperature of the first medium is more uniform after being cooled by the heat exchanger 22, so as to provide a homogeneous and stable cooling effect when it is continuously used for immersion cooling.

[0038] In addition, in the case of parallel connection, each heat exchanger 22 can be configured to be individually controlled so as to connect the selected heat exchanger 22 to the circulation path of the first medium as required. That is, an appropriate number of heat exchangers 22 can be selected according to the temperature of the first medium to provide a corresponding heat dissipation effect. Specifically, the heat exchange unit 20 may include a control unit for controlling the heat exchanger 22, and the cooling system includes a monitoring unit for monitoring the temperature of the first medium flowing into and / or flowing out of the liquid cooling device 10, and the monitoring unit is electrically connected to the control unit so that the control unit controls the working state of the heat exchanger 22 according to the feedback of the monitoring unit. When in use, when the monitoring unit detects that the temperature of the first medium is too high, the control unit can control more heat exchangers 22 to participate in the circulation of the first medium to strengthen the cooling of the first medium and reduce the temperature of the first medium; when the monitoring unit detects that the temperature of the first medium is low, the control unit can control fewer heat exchangers 22 to participate in the circulation of the first medium to reduce cooling power consumption.

[0039] By arranging the heat exchangers 22 in parallel and controlling them individually, it is possible to disconnect a heat exchanger 22 from the circulation of the first medium for maintenance when it fails, and control the working states of other heat exchangers 22 to make up for the loss caused by the disconnection of the heat exchanger 22. For example, when a heat exchanger 22 is disconnected from the circulation of the first medium, the control unit can introduce other heat exchangers 22 to replace the heat exchanger 22, or control the opening of valves corresponding to other heat exchangers 22 that are still working to improve the heat dissipation effect of these heat exchangers 22.

[0040] The control unit can control the working state of the heat exchanger 22 in an appropriate manner. For example, a valve can be provided in the first medium channel of each heat exchanger 22 or in a directly connected pipeline (such as the first medium channel inlet), and the control unit is used to control the on-off and opening degree of the valve, so that the valves of the required number of heat exchangers 22 can be opened as needed to participate in the circulation of the first medium.

[0041] It can be understood that when a heat exchanger 22 is in a working state, it means that its first medium channel and the second medium channel allow the first medium and the second medium to flow respectively for heat exchange; when a heat exchanger 22 is in a non-working state, it means that at least its first medium channel does not allow the first medium to flow, and its second medium channel can be cut off or kept unobstructed by controlling the corresponding valve through the control unit.

[0042] In addition, the heat exchange unit 20 may include a plurality of heat exchange cabinets 21, and the plurality of heat exchangers 22 may be distributed in the plurality of heat exchange cabinets 21. For example, a group of heat exchangers 22 may be provided in each heat exchange cabinet 21, and the first medium channels of the heat exchangers 22 in each heat exchange cabinet 21 may be aggregated through pipelines, and the aggregated pipelines of different heat exchange cabinets 21 may be connected to the corresponding first pipes 23 and / or second pipes 24.

[0043] In addition, the heat exchange unit 20 can be connected to the refrigeration unit 30 in an appropriate manner to circulate the second medium. In the case of including multiple heat exchangers 22, each heat exchanger 22 can be connected to the refrigeration unit 30 respectively, or the second medium flowing into and / or flowing out of the heat exchanger 22 can be collected. Preferably, the heat exchange unit 20 may include a third pipe 25 connecting the outlets of the second medium channels of the multiple heat exchangers 22 and / or a fourth pipe 26 connecting the inlets of the second medium channels of the multiple heat exchangers 22, and the third pipe 25 and the fourth pipe 26 are respectively connected to the refrigeration unit 30 to circulate the second medium.

[0044] The cooling system of the present application may be provided with appropriate devices to facilitate the circulation of the first medium and the second medium. For example, the heat exchange unit 20 includes a first circulation device 40 for circulating the first medium and / or a second circulation device 50 for circulating the second medium. Among them, the first circulation device 40 and the second circulation device 50 may be in an appropriate form, such as a circulation pump, and the first circulation device 40 and the second circulation device 50 may be configured to be able to adjust the working parameters to control the circulation flow rate, flow rate, etc. of the first medium and the second medium. In the present application, the first circulation device 40 and the second circulation device 50 may be controlled in accordance with the specific needs (such as the temperature of the first medium and the second medium) in conjunction with the valve state of each heat exchanger 22 to achieve the desired cooling effect.

[0045] The first circulation device 40 and the second circulation device 50 can be arranged at appropriate positions. For example, the first circulation device 40 can be arranged in the heat exchange cabinet 21 to simplify the arrangement of the system while integrating the heat exchange unit 20. The second circulation device 50 can be arranged in the working pipeline of the refrigeration unit 30. Of course, the first circulation device 40 and the second circulation device 50 can also be arranged at other positions. For example, the first circulation device 40 can also be arranged outside the heat exchange cabinet 21.

[0046] In addition, in order to ensure that the first medium is always circulated during the operation of the information processing facility, preferably, at least two first circulation devices 40 can be provided, and each first circulation device 40 can be individually connected to the circulation path of the first medium for pumping the first medium. Specifically, each first circulation device 40 can be connected to the circulation path of the first medium in parallel, and a corresponding control valve is provided on the parallel branch of each first circulation device 40. Under normal circumstances, only the control valve of one first circulation device 40 is turned on to pump the first medium through the first circulation device 40. When a working first circulation device 40 fails, the control valve of the first circulation device 40 can be closed, and the control valve of another first circulation device 40 can be turned on at the same time, so as to immediately start the standby first circulation device 40 online.

[0047] In the present application, the refrigeration unit 30 can be in an appropriate form to provide cooling for the second medium. For example, the refrigeration unit 30 can include a pool body with a certain volume, and a portion of the second medium channel can be immersed in the pool body to exchange heat with the cooling medium in the pool body for cooling. The pool body can be an artificial pool body, or it can be a part of a natural river, lake, or ocean close to land. Alternatively, the pool body can serve as a part of the second medium channel, that is, the second medium after heat exchange with the first medium can flow into the pool body for cooling, and the second medium with a lower temperature can be pumped from the pool body by a pumping device to exchange heat with the first medium.

[0048] Preferably, the refrigeration unit 30 can be configured to cool the second medium by a refrigerant. Since the refrigerant circulates only in the refrigeration unit 30, it is possible to avoid the transmission of a large amount of refrigerant over a long distance, and also avoid the problem of excessively high costs for heat preservation and leakage prevention caused thereby. In the present application, the refrigerant refers to a refrigerant, which is a refrigerant with a large latent heat and a small volume, and is used to transfer heat energy and produce a refrigeration effect in systems such as refrigeration and air conditioning, such as chlorofluorocarbons.

[0049] In order to effectively cool the second medium by the refrigerant, the refrigeration unit 30 includes an evaporator and a condenser. The evaporator includes a refrigerant channel and a cooling liquid channel that allow the refrigerant and the second medium to flow, respectively.

[0050] Among them, the evaporator and the condenser can form a chiller. In order to ensure the safe and stable operation of a data center, preferably, the refrigeration unit 30 may include at least two chillers, each of which can undertake the cooling cycle of at least a part of the second medium. That is, each chiller works in parallel. When in use, only one chiller can be used to cool the entire second medium (that is, one chiller provides cooling for the second medium of the heat exchangers 22 of all heat exchange cabinets 21), or at least two chillers can be used together to undertake the circulating cooling of the second medium (that is, each chiller provides cooling for the second medium of the heat exchangers 22 of a part of the heat exchange cabinets 21). For example, in the case of low cooling demand, the entire second medium can be cooled by only one chiller.

[0051] Preferably, the refrigeration unit 30 is configured to be able to distribute the second medium between different chillers. Thus, when at least two chillers are used to share the circulating cooling of the second medium, when one chiller fails, the second medium can be reallocated to the remaining chillers to meet the current cooling needs. Specifically, the third pipe 25 and the fourth pipe 26 for collecting the second medium of each heat exchanger 22 can be connected to the branch pipes of each chiller respectively, and corresponding control valves can be set on the branch pipes to control the on-off and opening degree of the branch pipe.

[0052] According to another aspect of the present application, a cooling method is provided, wherein the cooling method comprises: immersion cooling an electronic device disposed in a liquid cooling device 10 by circulating a first medium; cooling the first medium by performing non-contact heat exchange between the first medium and a second medium, wherein the second medium is a cooling liquid; and cooling the second medium.

[0053] Using the cooling method of the present application, immersion cooling can be provided to electronic equipment through the first medium, and the first medium can then exchange heat through the second medium of circulating cooling. In the cooling method of the present application, the flow path and area of ​​the first medium used as the immersion medium are reduced, the amount of the first medium and the corresponding insulation and leakage prevention measures are reduced as much as possible, and the reliability and stability of the cooling are improved. In addition, the flexibility or flexibility of the cooling system layout is provided to adapt to various application scenarios.

[0054] In this application, the fluid that is transmitted in large quantities and over long distances is mainly the second medium. The second medium is a coolant, and the composition of the coolant is relatively safe, such as water or a liquid containing water, so there is no need to invest too much cost in heat preservation and leakage prevention. Moreover, in the process of large-scale and long-distance transmission, the coolant is significantly safer than the immersion medium and refrigerant.

[0055] In the method of the present application, the second medium can be cooled by an appropriate method. Preferably, the second medium can be cooled by a refrigerant. Since the refrigerant is only used to cool the second medium, the second medium can be transported to an appropriate location and then cooled by the refrigerant circulation, thereby avoiding the large-scale and long-distance transmission of the refrigerant, and also avoiding the problem of excessively high insulation and leakage prevention costs caused by this.

[0056] The method of the present application may be implemented in an appropriate manner, for example, the cooling system of the present application may be used.

[0057] In the present application, in the liquid cooling device 10, the first medium can be in direct contact with the electronic device to absorb the heat generated by the electronic device. The first medium can be a suitable immersion cooling fluid, which can be a single-phase immersion cooling fluid or a two-phase immersion cooling fluid, such as a fluorocarbon fluid or other fluorinated liquid fluid. Specifically, when the first medium is a single-phase immersion cooling fluid, after absorbing heat, the first medium does not undergo a phase change and remains in a liquid state, and then condenses by heat exchange with the second medium, and then circulates back to the liquid cooling device 10; when the first medium is a two-phase immersion cooling fluid, after absorbing heat, at least part of the first medium can undergo a phase change to a gaseous state, and then condenses by heat exchange with the second medium in the form of a gaseous or partially gaseous fluid, so that it is completely cooled to a liquid state and circulated back to the liquid cooling device 10.

[0058] In the case where the first medium is a two-phase immersion cooling medium, in order to avoid the first medium being unable to be completely condensed into a liquid after heat exchange with the second medium, preferably, the first medium can be separated from the gas and liquid after heat exchange. For example, a gas-liquid separation tank can be set at the upstream position of the first tube 23 located at the first circulation device 40 to separate the gas and liquid of the first medium before passing through the first circulation device 40, thereby ensuring that the first circulation device 40 circulates the liquid first medium, thereby ensuring the immersion cooling effect in the liquid cooling device 10 and the normal operation of the entire cooling system.

[0059] The system and method of the present application are described below with reference to the accompanying drawings.

[0060] exist Figure 2 In the illustrated embodiment, the cooling system includes a plurality of liquid cooling devices 10 (in the illustrated embodiment, the liquid cooling device 10 is a liquid cooling cabinet), the heat exchange unit 20 includes a plurality of heat exchange cabinets 21 and a plurality of heat exchangers 22 disposed in the heat exchange cabinets 21, and the plurality of liquid cooling devices 10 form a plurality of liquid cooling device groups (in Figure 2 In the embodiment, a plurality of liquid cooling devices 10 form two liquid cooling device groups, and each liquid cooling device group corresponds to a heat exchange cabinet 21. The liquid cooling device 10 and the heat exchange unit 20 are arranged in the machine room, and the refrigeration unit 30 is arranged as an external chiller far away from the machine room.

[0061] The first medium inlets of the multiple liquid cooling devices 10 of each liquid cooling device group are respectively connected to the first pipe 23, and the first medium outlets of the multiple liquid cooling devices 10 of each liquid cooling device group are respectively connected to the second pipe 24. The first pipe 23 and the second pipe 24 are respectively connected to the first medium channel of the heat exchanger 22 in the corresponding heat exchange cabinet 21. The outlets of the second medium channels of each heat exchanger 22 are respectively connected to the third pipe 25, and the inlets of the second medium channels of each heat exchanger 22 are respectively connected to the fourth pipe 26. The third pipe 25 and the fourth pipe 26 are respectively connected to the coolant channel of the evaporator of the refrigeration unit 30.

[0062] In the machine room, the first medium enters the liquid cooling device 10 driven by the first circulation device 40, where it absorbs the heat inside the liquid cooling device 10 through immersion cooling. Then the first medium flows out of the liquid cooling device 10 and enters the heat exchanger 22 to exchange heat with the second medium, thereby returning to the liquid cooling device 10 after condensation.

[0063] The refrigeration unit 30 absorbs the heat generated in the machine room from the second medium through the compression refrigeration principle and discharges the heat into the atmosphere. The cooled second medium re-enters the machine room through the second circulation device 50 in the chiller.

[0064] The first medium is a fluorocarbon medium, the second medium is water, and the refrigerant is Freon. By using water (the second medium) to exchange heat with the first medium, the effect of cooling the first medium can be achieved. By using Freon compression refrigeration, water can be cooled. In this application, the fluorocarbon medium circulates only in the machine room, and the Freon circulates only in the cooling unit, which greatly reduces the flow range of the fluorocarbon medium and Freon and the required anti-leakage measures.

[0065] The technical solution of the present application utilizes the second medium to realize indirect heat exchange between the first medium and the external cooling medium (such as refrigerant), and obtains the following technical effects:

[0066] 1. Enhanced stability and flexibility of the cooling system: Since the first medium does not directly exchange heat with the refrigerant, this reduces the need for stability and reliability of the cooling system, while providing greater flexibility for different types of cooling needs (single-phase or two-phase);

[0067] 2. Improved energy efficiency and reduced engineering costs: By introducing a second medium as a heat exchange medium between the working range of the refrigerant cycle (such as an external chiller) and the liquid cooling device 10, the demand for the transportation of refrigerant in various parts of the data center is reduced, thereby significantly reducing the engineering cost and energy consumption of the cooling system;

[0068] 3. Adaptable to various heat source powers: Since the present application can support both single-phase and two-phase immersion cooling, it can adapt to the needs of various heat source powers, and even when the heat source power increases, it can still maintain efficient cooling effects.

[0069] In addition, the present application also provides an information processing facility, which includes the above-mentioned cooling system provided by the present application, or is cooled by the cooling method provided by the present application. The technical solution of the present application is applicable to various information processing facilities involved in the Internet field, big data field, artificial intelligence field, communication field, computing field, etc., such as computing centers, data centers, base stations, computer rooms, servers, cabinets, chassis, etc.

[0070] The preferred embodiments of the present application are described in detail above; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0071] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0072] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A cooling system, characterized in that: The cooling system comprises a liquid cooling device (10), a heat exchange unit (20) and a refrigeration unit (30); The liquid cooling device (10) is used for cooling electronic equipment located in the liquid cooling device (10) by immersion in a first medium; The heat exchange unit (20) is arranged in the liquid cooling device (10), and the heat exchange unit (20) comprises a second medium channel; the second medium flows into the heat exchange unit (20) arranged inside the liquid cooling device (10) through the second medium channel, and directly performs non-contact heat exchange with the first medium in the liquid cooling device (10); The refrigeration unit (30) is configured to cool the second medium, which is a cooling liquid.

2. The cooling system according to claim 1, characterized in that: The heat exchange unit (20) comprises a heat exchange cabinet (21) and a heat exchanger (22) arranged in the heat exchange cabinet (21), the heat exchanger comprises a first medium channel and a second medium channel, and the liquid cooling device (10) comprises a first medium inlet and a first medium outlet respectively connected to the first medium channel to circulate the first medium.

3. The cooling system according to claim 2, characterized in that: The cooling system comprises a plurality of the liquid cooling devices (10), wherein the first medium inlets of the plurality of the liquid cooling devices (10) are respectively connected to the first pipe (23) and connected to the first medium channel of the heat exchanger (22) via the first pipe (23), and / or the first medium outlets of the plurality of the liquid cooling devices (10) are respectively connected to the second pipe (24) and connected to the first medium channel of the heat exchanger (22) via the second pipe (24).

4. The cooling system according to claim 2, characterized in that: The heat exchange unit (20) includes a plurality of heat exchangers (22).

5. The cooling system according to claim 4, characterized in that: The heat exchange unit (20) comprises a third pipe (25) connected to the outlets of the second medium channels of the plurality of heat exchangers (22) and / or a fourth pipe (26) connected to the inlets of the second medium channels of the plurality of heat exchangers (22); the third pipe (25) and the fourth pipe (26) are respectively connected to the refrigeration unit (30) to circulate the second medium.

6. The cooling system according to any one of claims 2 to 5, characterized in that: The cooling system comprises a first circulation device (40) for circulating the first medium and / or a second circulation device (50) for circulating the second medium.

7. The cooling system according to any one of claims 1 to 5, characterized in that: The refrigeration unit (30) is configured to cool the second medium by non-contact heat exchange between the refrigerant and the second medium.

8. The cooling system according to claim 7, characterized in that: The refrigeration unit (30) comprises an evaporator and a condenser, wherein the evaporator comprises a refrigerant channel and a cooling liquid channel for respectively allowing the refrigerant and the second medium to flow.

9. Information processing facility, comprising the cooling system according to any one of claims 1 to 8.

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