Liquid cooling system, and control system and method for liquid cooling system

Abstract

A liquid cooling system, a control system and method for the liquid cooling system are disclosed. The liquid cooling system includes a heat exchange unit and a cooling unit. The cooling unit includes at least two cavities partitioned from each other. The cooling unit is provided with at least two liquid inlets and at least two liquid outlets, each corresponding to one cavity and communicating with each other. Each cavity is connected to the heat exchange unit via a corresponding liquid inlet and liquid outlet to form a cooling circuit. Each liquid inlet and each liquid outlet are provided with a first control valve, and a second control valve is provided at the liquid inlet end of the heat exchange unit. This liquid cooling system consumes less energy.

Description

[Technical Field]

[0001] This application claims priority to a Chinese patent application filed with the China Patent Office on November 14, 2022, bearing application number 202211422934.5 and entitled "Liquid Cooling System, Liquid Cooling System Control System and Method," the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to the field of refrigeration technology, and more particularly to liquid cooling systems, and systems and methods for controlling liquid cooling systems. [Background technology]

[0003] With the development of technologies such as the Internet and cloud computing, the number of high-density cabinets used in data centers (commonly known as server rooms) is gradually increasing, the integration of equipment is becoming higher and higher, and power consumption is becoming increasingly greater. The safe operation of servers, the core equipment of data centers, depends on a good cooling system.

[0004] In the related art, the server is placed in a case, the case contains a cooling liquid, the server is immersed in the cooling liquid, and the cooling liquid is circulated by a pump, thereby meeting the continuous heat dissipation requirements of the server.

[0005] However, the energy consumption of the liquid cooling system is high. Summary of the Invention [Problem to be solved by the invention]

[0006] The present invention provides a liquid cooling system with low energy consumption, and a system and method for controlling the liquid cooling system. [Means for solving the problem]

[0007] According to a first aspect, the present invention provides a liquid cooling system, comprising: a heat exchange unit; and a cooling unit, wherein the cooling unit comprises at least two cavities separated from each other; the cooling unit is provided with at least two liquid inlets and at least two liquid outlets, each of which corresponds to one cavity and communicates with each other; Each cavity communicates with the heat exchange unit through a corresponding liquid inlet and liquid outlet, forming a cooling circuit; Each liquid inlet and each liquid outlet is provided with a first control valve, and a second control valve is provided at the liquid inlet end of the heat exchange unit.

[0008] The liquid cooling system provided by the present invention includes a heat exchange unit and a cooling unit. The cooling unit has at least two cavities separated from each other, and the cooling unit has at least two liquid inlets and at least two liquid outlets, each corresponding to one cavity and connected to each other. Each cavity is connected to the heat exchange unit via a corresponding liquid inlet and liquid outlet, forming a cooling circuit. Each liquid inlet and each liquid outlet are provided with a first control valve, and a second control valve is provided at the liquid inlet end of the heat exchange unit. In this way, the flow rate of the cooling liquid involved in the circulation can be adjusted by opening and closing the first control valve, and the second control valve can adjust the flow rate of the cooling liquid input from the heat exchange unit to the cooling unit, thereby reducing the energy consumption required for the circulation of the cooling liquid and heat exchange in the cooling circuit.

[0009] In a possible implementation, according to the liquid cooling system provided by the present invention, the heat exchange unit includes a first liquid pump and a heat exchanger, the liquid inlet end of the first liquid pump forms the liquid inlet end of the heat exchange unit, the first liquid pump is connected to the heat exchanger and each of the liquid outlets, and the heat exchanger is connected to each of the liquid inlets.

[0010] In a possible implementation, the liquid cooling system provided by the present invention further includes a filter, wherein the liquid inlet end of the filter is connected to the liquid outlet end of the first liquid pump, and the liquid outlet end of the filter is connected to the liquid inlet end of the first liquid pump; Alternatively, the liquid inlet end of the filter is connected to the cooling unit, and the liquid outlet end of the filter is connected to the liquid inlet end of the first liquid pump.

[0011] In a possible implementation, according to the liquid cooling system provided by the present invention, the liquid inlet end of the second adjusting valve is connected to the liquid outlet end of the first liquid pump, and the liquid outlet end of the second adjusting valve is connected to the liquid inlet end of the first liquid pump.

[0012] In a possible implementation, the present invention provides a liquid cooling system, wherein the cooling unit includes at least two first subunits, each of which has one cavity.

[0013] In a possible implementation, the present invention provides a liquid cooling system, wherein the cooling unit includes at least one second sub-unit, the second sub-unit having at least two cavities.

[0014] In a possible implementation, the present invention provides a liquid cooling system, wherein the second subunit includes a housing, a liquid inlet pipe, and a liquid outlet pipe, the housing is provided with at least one partition plate that divides the housing into at least two cavities, and the liquid inlet and the liquid outlet are both provided in the housing; The liquid inlet pipe and the liquid outlet pipe are located on opposite sides of the housing, with each liquid inlet communicating with a liquid inlet pipe and each liquid outlet communicating with a liquid outlet pipe.

[0015] In a possible implementation, the present invention provides a liquid cooling system, wherein both the liquid inlet and the liquid outlet are close to the top of the cooling unit; Alternatively, one of the liquid inlet and liquid outlet is closer to the top of the cooling unit and the other is closer to the bottom of the cooling unit.

[0016] In a possible implementation, the liquid cooling system provided by the present invention further includes a fluid distributor located between the cooling unit and the heat exchange unit, and both the cooling unit and the heat exchange unit are connected to the fluid distributor.

[0017] In a possible implementation, the liquid cooling system provided by the present invention further includes a liquid replenishment unit, which includes a liquid storage tank and a second liquid pump, and the second liquid pump is connected to the liquid storage tank and the first liquid pump.

[0018] According to a second aspect, the present invention provides a liquid cooling system control method for controlling the liquid cooling system provided by the first aspect, the control method comprising: obtaining operating parameters of a liquid cooling system; If the operating parameter does not fall within the preset range, adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve.

[0019] According to the control method for a liquid cooling system provided by the present invention, the operating parameters of the liquid cooling system are obtained, and if the operating parameters do not fall within a predetermined range, the flow rate of the coolant input from the heat exchange unit to the cooling unit can be adjusted by adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve, thereby reducing the energy consumption required for circulating the coolant and heat exchanging it in the cooling circuit.

[0020] In a possible implementation, according to the method for controlling a liquid cooling system provided by the present invention, the step of acquiring operating parameters of the liquid cooling system includes: The method includes obtaining a first pressure of the cooling liquid at the liquid inlet end of the first liquid pump and a second pressure of the cooling liquid at the liquid outlet end of the first liquid pump, and obtaining a difference between the second pressure and the first pressure.

[0021] In a possible implementation, according to the method for controlling a liquid cooling system provided by the present invention, the step of acquiring operating parameters of the liquid cooling system includes: The method includes obtaining a first flow rate of the cooling liquid at the liquid inlet end of the first liquid pump and a second flow rate of the cooling liquid at the liquid outlet end of the first liquid pump, and obtaining a difference between the second flow rate and the first flow rate.

[0022] In a possible implementation, according to the method for controlling a liquid cooling system provided by the present invention, the step of acquiring operating parameters of the liquid cooling system includes: Obtaining a first temperature of the coolant at the liquid inlet end of the first liquid pump is included.

[0023] In a possible implementation, according to the control method for a liquid cooling system provided by the present invention, when the operating parameters are not within a preset range, the step of adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve includes: reducing the rotation speed of the first liquid pump when the difference between the second pressure and the first pressure is greater than the maximum value of a first preset range, and increasing the rotation speed of the first liquid pump when the difference between the second pressure and the first pressure is less than the minimum value of the first preset range; or increasing the aperture of the second control valve when the difference between the second pressure and the first pressure is greater than the maximum value of the first preset range, and decreasing the aperture of the second control valve when the difference between the second pressure and the first pressure is less than the minimum value of the first preset range; Alternatively, when the difference between the second pressure and the first pressure is greater than the maximum value of the first preset range, reducing the rotation speed of the first liquid pump, and when the rotation speed of the first liquid pump decreases to a threshold value and the difference between the second pressure and the first pressure is still greater than the maximum value of the first preset range, increasing the opening degree of the second control valve; The method includes the steps of: reducing the opening of the second control valve when the difference between the second pressure and the first pressure is smaller than the minimum value of the first preset range; and increasing the rotational speed of the first liquid pump when the second control valve is closed and the difference between the second pressure and the first pressure is still smaller than the minimum value of the first preset range.

[0024] In a possible implementation, according to the control method for a liquid cooling system provided by the present invention, when the operating parameters are not within a preset range, the step of adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve includes: reducing the rotation speed of the first liquid pump when the difference between the second flow rate and the first flow rate is greater than the maximum value of a second preset range, and increasing the rotation speed of the first liquid pump when the difference between the second flow rate and the first flow rate is less than the minimum value of the second preset range; or increasing the aperture of the second control valve when the difference between the second flow velocity and the first flow velocity is greater than the maximum value of a second preset range, and decreasing the aperture of the second control valve when the difference between the second flow velocity and the first flow velocity is less than the minimum value of the second preset range; Alternatively, when the difference between the second flow rate and the first flow rate is greater than the maximum value of the second preset range, reducing the rotation speed of the first liquid pump, and when the rotation speed of the first liquid pump is reduced to a threshold value and the difference between the second flow rate and the first flow rate is still greater than the maximum value of the second preset range, increasing the opening of the second control valve; If the difference between the second flow rate and the first flow rate is smaller than the minimum value of the second preset range, reducing the opening of the second control valve; and if the second control valve is closed and the difference between the second flow rate and the first flow rate is still smaller than the minimum value of the second preset range, increasing the rotational speed of the first liquid pump.

[0025] In a possible implementation, according to the control method for a liquid cooling system provided by the present invention, when the operating parameters are not within a preset range, the step of adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve includes: reducing the rotation speed of the first liquid pump when the first temperature is less than a minimum value of the third preset range, and increasing the rotation speed of the first liquid pump when the first temperature is greater than a maximum value of the third preset range; or increasing the aperture of the second control valve when the first temperature is lower than a minimum value of a third preset range, and decreasing the aperture of the second control valve when the first temperature is higher than a maximum value of the third preset range; Alternatively, when the first temperature is less than the minimum value of the third preset range, reducing the rotation speed of the first liquid pump, and when the rotation speed of the first liquid pump decreases to a threshold value and the first temperature is still less than the minimum value of the third preset range, increasing the opening degree of the second control valve; If the first temperature is greater than the maximum value of the third preset range, reducing the opening of the second control valve, and if the second control valve is closed and the first temperature is still greater than the maximum value of the third preset range, increasing the rotation speed of the first liquid pump.

[0026] In a possible implementation, the present invention provides a method for controlling a liquid cooling system, wherein if an operating parameter falls within a preset range, the method comprises: obtaining a second temperature of the cooling liquid at the liquid outlet corresponding to each cavity; and adjusting the corresponding first regulator valve based on the second temperature.

[0027] According to a third aspect, the present invention provides a control system for a liquid cooling system, comprising: a first pressure detection unit for detecting a first pressure of the cooling liquid at the liquid inlet end of the first liquid pump; a second pressure detection unit for detecting a second pressure of the cooling liquid at the liquid outlet end of the first liquid pump; and a control unit electrically connected to both the first pressure detection unit and the second pressure detection unit, which adjusts the rotation speed of the first liquid pump and / or the opening degree of the second control valve when the difference between the second pressure and the first pressure does not fall within a first preset range.

[0028] According to a fourth aspect, the present invention provides a control system for a liquid cooling system, comprising: a first flow rate detection unit for detecting a first flow rate of the cooling liquid at the liquid inlet end of the first liquid pump; a second flow rate detection unit for detecting a second flow rate of the cooling liquid at the liquid outlet end of the first liquid pump; and a control unit electrically connected to both the first flow rate detection unit and the second flow rate detection unit, which adjusts the rotation speed of the first liquid pump and / or the opening degree of the second control valve when the difference between the second flow rate and the first flow rate does not fall within a second preset range.

[0029] According to a fifth aspect, the present invention provides a control system for a liquid cooling system, comprising: a temperature detection unit for detecting a first temperature of the cooling liquid at the liquid inlet end of the first liquid pump; and a control unit electrically connected to the temperature detection unit, which adjusts the rotation speed of the first liquid pump and / or the opening degree of the second control valve when the first temperature does not belong to a third preset range. [Brief explanation of the drawings]

[0030] In order to more clearly explain the technical solutions of the embodiments of the present invention or the prior art, the following briefly introduces the drawings necessary for describing the embodiments or the prior art. Obviously, the drawings described below are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without exerting any effort that amounts to inventive step. [Figure 1] 1 is a structural schematic diagram of a liquid cooling system provided by an embodiment of the present invention; [Figure 2] 1 is a structural schematic diagram of a cooling unit in a liquid cooling system provided by an embodiment of the present invention; [Figure 3] FIG. 3 is a top view of FIG. 2. [Figure 4] FIG. 3 is a left side view of FIG. 2. [Figure 5] FIG. 2 is another structural schematic diagram of a liquid cooling system provided by an embodiment of the present invention. [Figure 6] FIG. 2 is another structural schematic diagram of a cooling unit in a liquid cooling system provided by an embodiment of the present invention. [Figure 7] FIG. 7 is a top view of FIG. [Figure 8]FIG. 7 is a left side view of FIG. 6. [Figure 9] FIG. 2 is another structural schematic diagram of a cooling unit in a liquid cooling system provided by an embodiment of the present invention. [Figure 10] 2 is a flowchart of a control method for a liquid cooling system provided by an embodiment of the present invention. [Figure 11] 1 is a structural schematic diagram of a control device for a liquid cooling system provided by an embodiment of the present invention; [Figure 12] FIG. 2 is another structural schematic diagram of the control device of the liquid cooling system provided by the embodiment of the present invention. [Figure 13] FIG. 2 is another structural schematic diagram of a control device for a liquid cooling system provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] In describing the present invention, unless otherwise expressly specified or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense, and may refer to, for example, a fixed connection, an indirect connection through an intermediate medium, internal communication between two elements, or an interactive relationship between two elements. Those skilled in the art may understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0032] In describing the present invention, the orientations or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are orientations or positional relationships according to the drawings, and do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are merely used for the convenience and simplification of the description of the present invention, and do not limit the present invention.

[0033] The terms "first," "second," "third," and the like (when present) in the present specification, claims, and drawings are not intended to describe a particular order or sequence, but rather to distinguish between similar subjects. Where appropriate, the terms so used may be interchanged, so that the embodiments of the present invention described herein may, for example, be implemented according to an order other than that shown or described herein.

[0034] Additionally, the terms "comprises," "having," and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product, or maintenance tool that includes a series of steps or units is not limited to those steps or units expressly listed, and may include other steps or units that are not expressly listed or that are inherent to the process, method, product, or maintenance tool.

[0035] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following clearly and completely describes the technical solutions of the embodiments of the present invention in combination with the drawings of the embodiments of the present invention, and it is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without any inventive effort are also within the scope of protection of the present invention.

[0036] In the related art, servers are placed in a chassis, which contains a coolant, and the servers are immersed in the coolant, and a pump is used to circulate the coolant, thereby satisfying the servers' continuous heat dissipation needs. However, following the typical development path of data centers, the infrastructure planning and construction is much larger than the initial actual operation, so in the initial actual operation, the installation space and amount of coolant required for the servers are small. Therefore, the energy consumed by the flow of coolant and heat exchange in the cooling circuit is large.

[0037] To solve the above technical problems, the present invention provides a liquid cooling system and a control system and method for the liquid cooling system. The cooling unit in the liquid cooling system includes at least two cavities separated from each other. The cooling unit is provided with at least two liquid inlets and at least two liquid outlets, each corresponding to one cavity and interconnected. In this way, during initial operation, some cavities can be used to install servers or electronic devices and inject coolant into them, while the remaining cavities are left empty. Alternatively, all cavities can be filled with coolant, but only the coolant in the cavity containing the server or electronic device is circulated. This reduces the energy consumed by the flow of coolant and heat exchange in the cooling circuit. A second control valve is provided at the liquid inlet end of the heat exchange unit, which can adjust the flow rate of coolant from the heat exchange unit to the cooling unit according to the load (the amount of heat dissipated by the server or electronic device), thereby contributing to reduced energy consumption.

[0038] FIG. 1 is a structural schematic diagram of a liquid cooling system provided by an embodiment of the present invention, FIG. 2 is a structural schematic diagram of a cooling unit in the liquid cooling system provided by an embodiment of the present invention, FIG. 3 is a top view of FIG. 2, and FIG. 4 is a left side view of FIG. 2.

[0039] As shown in Figures 1 to 4, the liquid cooling system provided by the present invention includes a heat exchange unit 100 and a cooling unit 200, and the cooling unit 200 includes at least two cavities 210 that are separated from each other. The cooling unit 200 is provided with at least two liquid inlets 220 and at least two liquid outlets 230, and one liquid inlet 220 and one liquid outlet 230 each correspond to one cavity 210 and are connected to each other.

[0040] Each cavity 210 communicates with the heat exchange unit 100 via a corresponding liquid inlet 220 and liquid outlet 230 to form a cooling circuit. Each liquid inlet 220 and each liquid outlet 230 is provided with a first control valve 240, and a second control valve 300 is provided at the liquid inlet end of the heat exchange unit 100.

[0041] The cavity 210 is used to mount the server and electronic devices, and a cooling liquid is poured into the cavity 210 to immerse the server and electronic devices and lower their temperatures.

[0042] The coolant is a non-conductive fluid medium, and illustratively the coolant may be a synthetic oil or a fluorinated liquid product.

[0043] According to the typical development path of data centers, the infrastructure planning and construction is much larger than the actual operation in the early stages, i.e., the sum of the spaces of all the cavities 210 is larger than the space required for installing the servers and electronic devices. Therefore, initially, coolant may be injected into some of the cavities 210. In this way, compared to the liquid cooling system in the related art that has only one cavity 210, the amount of coolant used can be reduced, further reducing costs. In addition, since the amount of coolant used is reduced, the energy consumed by circulating the coolant and exchanging heat in the cooling circuit is also reduced.

[0044] Alternatively, by injecting coolant into all cavities 210 and closing the first control valves 240 corresponding to the liquid outlets 230 and liquid inlets 220 corresponding to the cavities 210 in which no servers or electronic devices are installed, the coolant in the cavities 210 in which no servers or electronic devices are installed does not circulate, and thus the energy consumed by the circulation and heat exchange of the coolant in the cooling circuit is reduced.

[0045] In use, the coolant after heat exchange and temperature reduction by the heat exchange unit 100 enters the corresponding cavity 210 through the liquid inlet 220, and then enters the heat exchange unit 100 from the cavity 210 through the corresponding liquid outlet 230. The second heat exchange valve can adjust the flow rate of the coolant input from the heat exchange unit 100 to the cooling unit 200. When the load on the cooling unit 200 increases, the flow rate of the coolant input from the heat exchange unit 100 to the cooling unit 200 is increased, and when the load on the cooling unit 200 decreases, the flow rate of the coolant input from the heat exchange unit 100 to the cooling unit 200 is reduced, thereby ensuring the temperature reduction effect while reducing energy consumption.

[0046] Here, the first control valve 240 may be a mechanical valve or an electronic valve, and the second control valve 300 may be a mechanical valve or an electronic valve.

[0047] The first adjusting valve 240 determines whether the corresponding first adjusting valve 240 is open or closed depending on whether a server and an electronic device are installed in the cavity 210 .

[0048] Alternatively, the opening or closing of the corresponding first control valve 240 is determined based on the temperature of the coolant in the cavity 210. For example, if the temperature of the coolant in the cavity 210 is 40 degrees or higher, the first control valve 240 corresponding to the liquid inlet 220 corresponding to the cavity 210 and the first control valve 240 corresponding to the corresponding liquid outlet 230 are opened, and if the temperature of the coolant in the cavity 210 is lower than 40 degrees, the first control valve 240 corresponding to the liquid inlet 220 corresponding to the cavity 210 and the first control valve 240 corresponding to the corresponding liquid outlet 230 are closed.

[0049] The heat exchange unit 100 and the cooling unit 200 may be integrated into an integrated device or may be arranged separately. In this embodiment, the positional relationship between the heat exchange unit 100 and the cooling unit 200 is not specifically limited.

[0050] The liquid cooling system provided by this embodiment includes a heat exchange unit 100 and a cooling unit 200. The cooling unit 200 has at least two cavities 210 that are separated from each other. The cooling unit 200 has at least two liquid inlets 220 and at least two liquid outlets 230, each corresponding to one cavity 210 and communicating with each other. Each cavity 210 communicates with the heat exchange unit 100 via its corresponding liquid inlet 220 and liquid outlet 230, thereby forming a cooling circuit. Each liquid inlet 220 and each liquid outlet 230 is provided with a first control valve 240, and a second control valve 300 is provided at the liquid inlet end of the heat exchange unit 100. In this way, the flow rate of the coolant involved in the circulation can be adjusted by opening or closing the first control valve 240, and the second control valve 300 can adjust the flow rate of the coolant input from the heat exchange unit 100 to the cooling unit 200, which helps to reduce the energy consumption required for the circulation of the coolant and heat exchange in the cooling circuit.

[0051] Here, the liquid cooling system provided in this embodiment consumes little energy, which helps optimize the power usage effectiveness (PUE) of a data center. Power usage effectiveness is an index that evaluates the energy efficiency of a data center and is the ratio of the total energy consumed by the data center to the energy used by the IT load.

[0052] In a possible implementation, the heat exchange unit 100 includes a first liquid pump 110 and a heat exchanger 120, the liquid inlet end of the first liquid pump 110 forming the liquid inlet end of the heat exchange unit 100, the first liquid pump 110 being connected to the heat exchanger 120 and each being connected to each of the liquid outlets 230, and the heat exchanger 120 being connected to each of the liquid inlets 220.

[0053] The first liquid pump 110 is used to provide power for circulating the cooling liquid. The number of first liquid pumps 110 may be one, two, or more. Two or more first liquid pumps 110 are arranged in series. The liquid inlet end of the first liquid pump forms the liquid inlet end of the heat exchange unit 100.

[0054] Specifically, the first liquid pump 110 may be a variable speed pump, which allows the flow rate of the coolant input from the heat exchange unit 100 to the cooling unit 200 to be adjusted.

[0055] The heat exchanger 120 may be a shell-and-tube or plate-type heat exchanger, and is used to exchange heat between the primary side and the secondary side, thereby reducing the temperature of the coolant. For example, the primary side may be a cooling tower, a dry cooler, a chiller, etc., which are not specifically limited in this embodiment.

[0056] In this embodiment, the liquid inlet end of the second control valve 300 is connected to the liquid outlet end of the first liquid pump 110, and the liquid outlet end of the second control valve 300 is connected to the liquid inlet end of the first liquid pump 110. In this way, the second control valve 300 forms a bypass pipe for the first liquid pump 110, and a portion of the coolant sprayed from the first liquid pump 110 enters the heat exchanger 120 to be cooled, while another portion enters the second control valve 300 and returns to the first liquid pump 110 via the second control valve 300. By adjusting the opening degree of the second control valve 300, the flow rate of the coolant transported from the second liquid pump to the heat exchanger can be adjusted.

[0057] Because the water absorption or chemical properties of the coolant may change, the coolant needs to be filtered and treated during use. Therefore, in some embodiments, the liquid cooling system further includes a filter 400, whose liquid inlet end is connected to the liquid outlet end of the first liquid pump 110 and whose liquid outlet end is connected to the liquid inlet end of the first liquid pump 110. In this way, the filter 400 forms a bypass pipe for the first liquid pump 110, and some of the coolant ejected from the first liquid pump 110 enters the heat exchanger 120 to be cooled, some enters the second control valve 300 and returns to the first liquid pump 110 via the second control valve 300, and another part enters the filter 400, is filtered by the filter 400, and returns to the first liquid pump 110. In this way, the filter 400 is located in the bypass branch of the first liquid pump 110, and reduces the resistance to the flow of the coolant in the cooling circuit, helping to reduce power consumption.

[0058] In some embodiments, the liquid inlet end of filter 400 is connected to cooling unit 200 and the liquid outlet end of filter 400 is connected to the liquid inlet end of first liquid pump 110 .

[0059] Here, the placement of a filter 400 is beneficial to ensure the cleanliness and chemical stability of the coolant.

[0060] FIG. 5 is another structural schematic diagram of a liquid cooling system provided by an embodiment of the present invention.

[0061] 5, the cooling unit 200 includes at least two first subunits 250, and each first subunit 250 includes one cavity 210. In this manner, the at least two first subunits 250 form at least two cavities 210.

[0062] Here, the first control valve 240 corresponding to the liquid inlet 220 and the liquid outlet 230 in the first subunit 250 may be provided in the first subunit 250, or may be provided in an external pipe connected to the first subunit 250.

[0063] Illustratively, the number of first subunits 250 may be two or more.

[0064] As shown in FIGS. 1 to 4, the cooling unit 200 includes at least one second subunit 260, and the second subunit 260 includes a plurality of cavities 210.

[0065] Illustratively, the cooling unit 200 includes at least one first sub-unit 250 and at least one second sub-unit 260 .

[0066] In some embodiments, the second subunit 260 includes a housing 261, a liquid inlet tube 262 and a liquid outlet tube 263, the internal cavity of the housing 261 is provided with at least one partition plate 264 that divides the internal cavity into at least two cavities 210, and the liquid inlet 220 and the liquid outlet 230 are both provided in the housing 261.

[0067] Liquid inlet pipe 262 and liquid outlet pipe 263 are located on opposite sides of housing 261, with each liquid inlet 220 communicating with liquid inlet pipe 262 and each liquid outlet 230 communicating with liquid outlet pipe 263. By arranging liquid inlet pipe 262 and liquid outlet pipe 263, heat exchanger 120 is connected to cooling unit 200 via liquid inlet pipe 262, and first liquid pump 110 is connected to cooling unit 200 via liquid outlet pipe 263, which simplifies the piping and makes it easier to arrange the piping.

[0068] Illustratively, the number of dividers 264 may be one, two, or more.

[0069] As shown in FIGS. 1 to 4, the number of partition plates 264 may be nine, and the nine partition plates 264 divide the internal cavity of the housing 261 into ten cavities 210.

[0070] FIG. 6 is another structural schematic diagram of a cooling unit in a liquid cooling system provided by an embodiment of the present invention, FIG. 7 is a top view of FIG. 6, and FIG. 8 is a left side view of FIG.

[0071] 6 to 8, both the liquid inlet 220 and the liquid outlet 230 are located close to the top of the cooling unit 200. Here, the density of a coolant at a low temperature is greater than the density of a coolant at a high temperature, and both the liquid inlet 220 and the liquid outlet 230 are located close to the top of the cooling unit 200. In this way, the coolant at a low temperature that enters the cavity 210 from the liquid inlet 220 moves to the bottom, thereby improving the temperature uniformity of the coolant within the cavity 210.

[0072] Alternatively, one of the liquid inlet 220 and the liquid outlet 230 is closer to the top of the cooling unit 200 and the other is closer to the bottom of the cooling unit 200 .

[0073] Specifically, as shown in FIG. 4, the liquid inlet 220 is close to the bottom of the cooling unit 200, and the liquid outlet 230 is close to the top of the cooling unit 200. Thus, the temperature of the coolant approaching the bottom of the cooling unit 200 is lower than the temperature of the coolant approaching the top of the cooling unit 200, and the coolant approaching the top of the cooling unit 200 flows out through the liquid inlet 220, thereby improving the cooling effect of the coolant.

[0074] Here, in a specific implementation, the positions of the liquid inlet 220 and the liquid outlet 230 can be set according to the layout needs, thereby facilitating the layout of the liquid cooling system.

[0075] As shown in Figures 1 to 5, the liquid cooling system further includes a fluid distributor 500 located between the cooling unit 200 and the heat exchange unit 100, and both the cooling unit 200 and the heat exchange unit 100 are connected to the fluid distributor 500.

[0076] Here, by controlling the fluid distributor 500, the flow rate of the cooling liquid distributed to each of the first sub-units 250 or each of the second sub-units 260 of the cooling unit 200 can be adjusted.

[0077] The fluid distributor 500 may be a manifold.

[0078] Here, the flow rate of the cooling liquid distributed to each first sub-unit 250 or each second sub-unit 260 of the cooling unit 200 may be adjusted by controlling the fluid distributor, or by controlling the opening degree of the first control valve 240, or by controlling both the fluid distributor 500 and the first control valve 240.

[0079] FIG. 9 is another structural schematic diagram of a cooling unit in a liquid cooling system provided by an embodiment of the present invention.

[0080] As shown in FIG. 9, the liquid cooling system further includes a liquid replenishment unit 600, which includes a liquid storage tank 610 and a second liquid pump 620, which is connected to the liquid storage tank 610 and the first liquid pump 110.

[0081] Here, when the load increases or more cavities 210 are used, the liquid cooling system needs to be replenished with coolant, and by disposing the liquid replenishment unit 600, automatic replenishment of the coolant can be realized.

[0082] FIG. 10 is a flowchart of a method for controlling a liquid cooling system provided by an embodiment of the present invention.

[0083] As shown in FIG. 10, the present invention provides a control method for a liquid cooling system for controlling the liquid cooling system provided in the above embodiment, and the control method includes S101 and S102.

[0084] S101: Obtain operating parameters of the liquid cooling system.

[0085] Specifically, the operating parameters may be the difference between the second pressure of the coolant at the liquid outlet end of the first liquid pump 110 and the first pressure of the coolant at the liquid inlet end of the first liquid pump 110, the difference between the second flow rate of the coolant at the liquid outlet end of the first liquid pump 110 and the first flow rate of the coolant at the liquid inlet end of the first liquid pump 110, the first temperature of the coolant at the liquid inlet end of the first liquid pump 110, the second temperature of the coolant at the liquid outlet 230 corresponding to each cavity 210, and the third temperature of the coolant in each cavity 210.

[0086] S102: If the operating parameters do not fall within the preset ranges, the rotation speed of the first liquid pump 110 and / or the opening degree of the second control valve 300 are adjusted.

[0087] Illustratively, the operating parameter may be the second temperature of the cooling liquid in the liquid outlets 230 corresponding to each cavity 210. If one of the second temperatures of the cooling liquid in the liquid outlets 230 corresponding to each cavity 210 is greater than the maximum value of the preset range, the rotational speed of the first liquid pump 110 is increased. If all of the second temperatures of the cooling liquid in the liquid outlets 230 corresponding to each cavity 210 are less than the minimum value of the preset range, the rotational speed of the first liquid pump 110 is decreased.

[0088] Alternatively, if one of the second temperatures of the cooling liquid at the liquid outlets 230 corresponding to each cavity 210 is greater than the maximum value of the preset range, the opening degree of the second control valve 300 is reduced, and if all of the second temperatures of the cooling liquid at the liquid outlets 230 corresponding to each cavity 210 are less than the minimum value of the preset range, the opening degree of the second control valve 300 is increased.

[0089] Alternatively, if the second temperatures of the cooling liquid at the liquid outlets 230 corresponding to each cavity 210 are all lower than the minimum value of the preset range, the rotation speed of the first liquid pump 110 is reduced.

[0090] When the rotation speed of the first liquid pump 110 decreases to the threshold value and the first temperature is still lower than the minimum value of the preset range, the opening degree of the second control valve 300 is increased.

[0091] If one of the second temperatures of the cooling liquid in the liquid outlets 230 corresponding to each cavity 210 is greater than the maximum value of the preset range, the opening of the second control valve 300 is reduced.

[0092] If the second regulator valve 300 is closed and the first temperature is still greater than the maximum value of the preset range, the rotation speed of the first liquid pump 110 is increased.

[0093] Similarly, the operating parameter may be a third temperature of the coolant in each cavity 210, where this embodiment will not be repeated.

[0094] According to the control method for a liquid cooling system provided in this embodiment, the operating parameters of the liquid cooling system are obtained, and if the parameters do not fall within a preset range, the flow rate of the coolant input from the heat exchange unit 100 to the cooling unit 200 can be adjusted by adjusting the rotation speed of the first liquid pump 110 and / or the opening degree of the second control valve 300, which helps to reduce the energy consumption required for circulating the coolant and heat exchanging in the cooling circuit.

[0095] In a possible implementation, the step of obtaining operating parameters of the liquid cooling system includes: The method includes obtaining a first pressure of the cooling liquid at the liquid inlet end of the first liquid pump 110 and a second pressure of the cooling liquid at the liquid outlet end of the first liquid pump 110, and obtaining a difference between the second pressure and the first pressure.

[0096] Specifically, if the difference between the second pressure and the first pressure is greater than the maximum value of the first preset range, the rotation speed of the first liquid pump 110 is reduced.

[0097] If the difference between the second pressure and the first pressure is less than the minimum value of the first preset range, the rotation speed of the first liquid pump 110 is increased.

[0098] Alternatively, if the difference between the second pressure and the first pressure is greater than the maximum value of the first preset range, the opening of the second control valve 300 is increased.

[0099] When the difference between the second pressure and the first pressure is smaller than the minimum value of the first preset range, the opening of the second control valve 300 is reduced.

[0100] Alternatively, if the difference between the second pressure and the first pressure is greater than the maximum value of the first preset range, the rotational speed of the first liquid pump 110 is reduced.

[0101] When the rotation speed of the first liquid pump 110 decreases to the threshold value and the difference between the second pressure and the first pressure is still greater than the maximum value of the first preset range, the opening of the second control valve 300 is increased.

[0102] When the difference between the second pressure and the first pressure is smaller than the minimum value of the first preset range, the opening of the second control valve 300 is reduced.

[0103] When the second regulator valve 300 is closed and the difference between the second pressure and the first pressure is still less than the minimum value of the first preset range, the rotation speed of the first liquid pump 110 is increased.

[0104] Specifically, the first liquid pump 110 is a variable speed pump. The flow rate of the first liquid pump 110 is directly proportional to the rotational speed of the first liquid pump 110, and the head of the first liquid pump 110 is directly proportional to the square of the rotational speed of the first liquid pump 110. That is, as the rotational speed of the first liquid pump 110 increases, the head of the first liquid pump 110 increases, and the flow rate of the first liquid pump 110 increases. As the rotational speed of the first liquid pump 110 decreases, the head of the first liquid pump 110 decreases, and the flow rate of the first liquid pump 110 decreases.

[0105] The difference between the second pressure and the first pressure is positively correlated with the head of the first liquid pump 110, and when the difference between the second pressure and the first pressure is greater than the maximum value of the first preset range, it means that the head of the first liquid pump 110 is large and the rotational speed of the first liquid pump 110 is high, that is, the flow rate of the first liquid pump 110 is large. In this case, the actual flow rate of the cooling liquid per unit time of the cooling unit 200 is greater than the required flow rate of the cooling liquid per unit time of the cooling unit 200. That is, the actual flow rate of the cooling liquid per unit time of the cooling unit 200 needs to be reduced. Therefore, it is necessary to reduce the rotational speed of the first liquid pump 110, or increase the opening of the second control valve 300, or increase the opening of the second control valve 300 while reducing the rotational speed of the first liquid pump 110.

[0106] If the difference between the second pressure and the first pressure is smaller than the minimum value of the first preset range, it means that the flow rate of coolant required by the cooling unit 200 per unit time increases, so it is necessary to increase the rotation speed of the first liquid pump 110, or reduce the opening of the second control valve 300, or increase the rotation speed of the first liquid pump 110 while reducing the opening of the second control valve 300.

[0107] According to the control method for the liquid cooling system provided in this embodiment, a first pressure of the cooling liquid at the liquid inlet end of the first liquid pump 110 and a second pressure of the cooling liquid at the liquid outlet end of the first liquid pump 110 are obtained, and if the difference between the second pressure and the first pressure does not fall within a first preset range, the rotation speed of the first liquid pump 110 and / or the opening degree of the second control valve 300 are adjusted to adjust the flow rate of the cooling liquid transported from the heat exchange unit 100 to the cooling unit 200, thereby reducing energy consumption and being beneficial to optimizing the PUE of the data center.

[0108] The first preset range may be 0.8 to 3 bar. The threshold value is a rated minimum rotation speed value of the first hydraulic pump.

[0109] During initial operation, when the number of servers and electronic devices installed is low, the cavity 210 is not used much, the heat generated by the installed servers and electronic devices is low, and the load on the liquid cooling system is low, and the rotational speed of the first liquid pump drops to the rated minimum rotational speed. If the difference between the second pressure and the first pressure is still greater than the first preset range, the second control valve 300 is opened to adjust the opening of the second control valve 300 so that the difference between the second pressure and the first pressure falls within the first preset range. This is beneficial to reducing the energy consumption of the first liquid pump 110 and ensuring that the first liquid pump 110 operates within the rated rotational speed range.

[0110] If the difference between the second pressure and the first pressure is smaller than the minimum value of the first preset range, the opening degree of the second valve is adjusted until the second valve is closed, and then the rotation speed of the first liquid pump 110 is increased, which is beneficial to reducing the energy consumption of the first liquid pump 110.

[0111] In another possible implementation, according to the method for controlling a liquid cooling system provided by the present invention, the step of acquiring operating parameters of the liquid cooling system includes: The method includes obtaining a first flow rate of the cooling liquid at the liquid inlet end of the first liquid pump 110 and a second flow rate of the cooling liquid at the liquid outlet end of the first liquid pump 110, and obtaining the difference between the second flow rate and the first flow rate.

[0112] Specifically, if the difference between the second flow rate and the first flow rate is greater than the maximum value of the second preset range, the rotation speed of the first liquid pump 110 is reduced.

[0113] If the difference between the second flow rate and the first flow rate is less than the minimum value of the second preset range, the rotational speed of the first liquid pump 110 is increased.

[0114] Alternatively, if the difference between the second flow rate and the first flow rate is greater than the maximum value of the second preset range, the opening of the second control valve 300 is increased.

[0115] If the difference between the second flow rate and the first flow rate is smaller than the minimum value of the second preset range, the opening of the second control valve 300 is reduced.

[0116] Alternatively, if the difference between the second flow rate and the first flow rate is greater than the maximum value of the second preset range, the rotational speed of the first liquid pump 110 is reduced.

[0117] When the rotation speed of the first liquid pump 110 decreases to a threshold value and the difference between the second flow rate and the first flow rate is still greater than the maximum value of the second preset range, the opening of the second control valve 300 is increased.

[0118] If the difference between the second flow rate and the first flow rate is smaller than the minimum value of the second preset range, the opening of the second control valve 300 is reduced.

[0119] When the second control valve 300 is closed and the difference between the second flow rate and the first flow rate is still less than the minimum value of the second preset range, the rotation speed of the first liquid pump 110 is increased.

[0120] According to the liquid cooling system control method provided in this embodiment, a first flow rate of the cooling liquid at the liquid inlet end of the first liquid pump 110 and a second flow rate of the cooling liquid at the liquid outlet end of the first liquid pump 110 are obtained, and if the difference between the second flow rate and the first flow rate does not fall within a second preset range, the rotation speed of the first liquid pump 110 and / or the opening degree of the second control valve 300 are adjusted to control the flow rate of the cooling liquid transported from the heat exchange unit 100 to the cooling unit 200, thereby reducing energy consumption and being beneficial to optimizing the PUE of the data center.

[0121] The second preset range is set based on the first preset range.

[0122] During initial operation, when the number of servers and electronic devices installed is low, the cavity 210 is not used, the heat generated by the installed servers and electronic devices is low, and the load on the liquid cooling system is low, and the rotational speed of the first liquid pump drops to the minimum rated rotational speed. If the difference between the second flow rate and the first flow rate is still greater than the maximum value of the second preset range after the rotational speed of the first liquid pump drops to the minimum rated rotational speed, the second control valve 300 is opened to adjust the opening degree of the second control valve 300 so that the difference between the second flow rate and the first flow rate falls within the second preset range. This is beneficial to reducing the energy consumption of the first liquid pump 110 and ensuring that the first liquid pump 110 operates within the rated rotational speed range.

[0123] If the difference between the second flow rate and the first flow rate is smaller than the minimum value of the second preset range, the opening degree of the second valve is adjusted until the second valve is closed, and then the rotation speed of the first liquid pump 110 is increased, which is beneficial to reducing the energy consumption of the first liquid pump 110.

[0124] In some embodiments, the method for controlling a liquid cooling system provided by the present invention includes the steps of: The method includes obtaining a first temperature of the coolant at the liquid inlet end of the first liquid pump.

[0125] Here, if the first temperature is smaller than the minimum value of the third preset range, the rotation speed of the first liquid pump 110 is reduced, and if the first temperature is larger than the maximum value of the third preset range, the rotation speed of the first liquid pump 110 is increased.

[0126] Alternatively, if the first temperature is lower than the minimum value of the third preset range, the opening of the second control valve 300 is increased.

[0127] If the first temperature is greater than the maximum value of the third preset range, the opening of the second control valve 300 is reduced.

[0128] Alternatively, if the first temperature is less than the minimum value of the third preset range, the rotational speed of the first liquid pump 110 is reduced.

[0129] When the rotation speed of the first liquid pump 110 decreases to the threshold value and the first temperature is still less than the minimum value of the third preset range, the opening of the second control valve 300 is increased.

[0130] If the first temperature is greater than the maximum value of the third preset range, the opening of the second control valve 300 is reduced.

[0131] If the second regulator valve 300 is closed and the first temperature is still greater than the maximum value of the third preset range, the rotation speed of the first liquid pump 110 is increased.

[0132] Here, if the first temperature is smaller than the minimum value of the third preset range, this means that the flow rate of the cooling liquid required by the cooling unit 200 is small, so it is necessary to reduce the rotation speed of the first liquid pump 110, or increase the opening of the second control valve 300, or reduce the rotation speed of the first liquid pump 110 while increasing the opening of the second control valve 300.

[0133] If the first temperature is greater than the maximum value of the third preset range, it means that the cooling unit 200 requires a larger flow rate of coolant, so it is necessary to increase the rotation speed of the first liquid pump 110, or reduce the opening of the second control valve 300, or increase the rotation speed of the first liquid pump 110 while reducing the opening of the second control valve 300.

[0134] According to the control method for the liquid cooling system provided in this embodiment, a first temperature of the cooling liquid at the liquid inlet end of the first liquid pump 110 is obtained, and if the first temperature does not belong to a third preset range, the rotation speed of the first liquid pump 110 and / or the opening degree of the second control valve 300 are adjusted to control the flow rate of the cooling liquid transported from the heat exchange unit 100 to the cooling unit 200, thereby reducing energy consumption and being beneficial to optimizing the PUE of the data center.

[0135] The third preset range may be between 40° and 65°.

[0136] Here, if the first temperature is higher than 65°C, the cooling effect of the coolant is poor, and if the first temperature is lower than 40°C, the amount of energy consumed during the cooling circulation of the coolant is large.

[0137] During initial operation, when the number of servers and electronic devices installed is low, the cavity 210 is not used, the heat generated by the installed servers and electronic devices is low, and the load on the liquid cooling system is low, and the rotational speed of the first liquid pump drops to the rated minimum rotational speed. If the first temperature is still lower than the minimum value of the third preset range, the second control valve 300 is opened to adjust the opening degree of the second control valve 300 so that the first temperature falls within the third preset range. This is beneficial to reducing the energy consumption of the first liquid pump 110 and ensuring that the first liquid pump 110 operates within the rated rotational speed range.

[0138] When the first temperature is greater than the maximum value of the third preset range, the opening degree of the second control valve 300 is adjusted until the second control valve 300 is closed, and then the rotation speed of the first liquid pump 110 is increased, which is beneficial to reducing the energy consumption of the first liquid pump 110.

[0139] In a possible implementation, if the operating parameter is within a preset range, the method comprises: obtaining a second temperature of the cooling liquid at the liquid outlet 230 corresponding to each cavity 210; and adjusting the corresponding first regulator valve 240 based on the second temperature.

[0140] For example, the cooling unit 200 includes a first cavity and a second cavity, and is provided with a first liquid outlet and a second liquid outlet, the first liquid outlet communicating with the first cavity and the second liquid outlet communicating with the second cavity, and each of the first and second liquid outlets is provided with a first control valve 240. The aperture of the first control valve 240 corresponding to the first liquid outlet is controlled in accordance with a second temperature of the cooling liquid at the first liquid outlet. If the second temperature is greater than the maximum value of a third preset range, the aperture of the first control valve 240 is increased, and if the second temperature is less than the minimum value of the third preset range, the aperture of the first control valve 240 is decreased, resulting in high control accuracy. Similarly, the aperture of the first control valve 240 corresponding to the second liquid outlet is controlled in accordance with the second temperature of the cooling liquid at the second liquid outlet, resulting in high control accuracy.

[0141] Here, when no server (and / or electronic device) is installed in the first cavity or the second cavity, the second temperature of the coolant in the corresponding liquid outlet 230 is lower, the corresponding first control valve 240 can be closed, and the energy consumed by the coolant circulation and heat exchange in the cooling circuit is reduced.

[0142] In addition, when a server (and / or electronic device) is installed in the first cavity or the second cavity, detecting the second temperature of the cooling liquid in the liquid outlet 230 corresponding to each cavity 210 helps to ensure the cooling effect of the server (and / or electronic device) in the first cavity and the second cavity.

[0143] In some embodiments, a first regulator valve 240 corresponding to the liquid outlet 230 of each cavity 210 can be adjusted based on a first temperature of the cooling liquid at the liquid inlet end of the first liquid pump 110 .

[0144] FIG. 11 is a structural schematic diagram of a control device for a liquid cooling system provided by an embodiment of the present invention.

[0145] As shown in Figure 11, the control system of the liquid cooling system is a first pressure detection unit 700 for detecting a first pressure of the cooling liquid at the liquid inlet end of the first liquid pump 110; a second pressure detection unit 800 for detecting a second pressure of the cooling liquid at the liquid outlet end of the first liquid pump 110; and a control unit 1000 electrically connected to both the first pressure detection unit 700 and the second pressure detection unit 800, which adjusts the rotation speed of the first liquid pump 110 and / or the opening degree of the second control valve 300 when the difference between the second pressure and the first pressure does not fall within a first preset range.

[0146] Specifically, the first pressure detection unit 700 and the second pressure detection unit 800 may be pressure sensors.

[0147] FIG. 12 is another structural schematic diagram of a control device for a liquid cooling system provided by an embodiment of the present invention.

[0148] As shown in FIG. 12, the control system of the liquid cooling system provided by the present invention includes: a first flow rate detection unit 1100 for detecting a first flow rate of the cooling liquid at the liquid inlet end of the first liquid pump 110; a second flow rate detection unit 1200 for detecting a second flow rate of the cooling liquid at the liquid outlet end of the first liquid pump 110; and a control unit 1000 electrically connected to both the first flow rate detection unit 1100 and the second flow rate detection unit 1200, which adjusts the rotation speed of the first liquid pump 110 and / or the opening degree of the second control valve 300 when the difference between the second flow rate and the first flow rate does not fall within a second preset range.

[0149] Specifically, the first flow velocity detection unit 1100 and the second flow velocity detection unit 1200 may be flow velocity sensors.

[0150] FIG. 13 is another structural schematic diagram of a control device for a liquid cooling system provided by an embodiment of the present invention.

[0151] As shown in FIG. 13, the control system of the liquid cooling system provided by the present invention includes: a temperature detection unit (900) for detecting a first temperature of the cooling liquid at the liquid inlet end of the first liquid pump (110); and a control unit 1000 electrically connected to the temperature detection unit 900, which adjusts the rotation speed of the first liquid pump 110 and / or the opening degree of the second control valve 300 if the first temperature does not belong to a third preset range.

[0152] Specifically, the temperature detection unit 900 may be a temperature sensor.

[0153] Finally, the above embodiments do not limit the technical solutions of the present invention, but are merely used for illustration. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still understand that the technical solutions described in the above embodiments may be amended or some or all of the technical features may be equivalently replaced, and the essence of the corresponding technical solutions will not deviate from the scope of the technical solutions of the embodiments of the present invention due to such amendments or replacements. [Explanation of symbols]

[0154] 100 ··· heat exchange unit; 110 ··· first liquid pump; 120 ··· heat exchanger; 200 ···Cooling unit; 210 ···Cavity; 220 ···Liquid inlet; 230 ···Liquid outlet; 240 ···First control valve; 250 ···First subunit; 260 ···Second subunit; 261 ···Housing; 262 ···Liquid inlet pipe; 263 ···Liquid outlet pipe; 264 ···Partition plate; 300 ···Second control valve; 400 ···filter; 500...Fluid distributor; 600 ···Liquid refill unit; 610 ···Liquid storage tank; 620 ···Second liquid pump; 700 ···First pressure detection unit; 800 ···Second pressure detection unit; 900 ···Temperature detection unit; 1000 ···Control unit; 1100 ···First flow velocity detection unit; 1200 ···Second flow velocity detection unit.

Claims

1. A liquid cooling system including a heat exchange unit and a cooling unit, the cooling unit includes at least two cavities that are partitioned from each other, the cooling unit is provided with at least two liquid inlets and at least two liquid outlets, one liquid inlet and one liquid outlet each corresponding to one cavity and communicating with each other; Each of the cavities communicates with the heat exchange unit via the corresponding liquid inlet and liquid outlet, forming a cooling circuit; Each of the liquid inlets and each of the liquid outlets is provided with a first control valve, and a second control valve is provided at the liquid inlet end of the heat exchange unit; A liquid cooling system comprising:

2. the heat exchange unit includes a first liquid pump and a heat exchanger, a liquid inlet end of the first liquid pump forms a liquid inlet end of the heat exchange unit, the first liquid pump is connected to the heat exchanger and each of the liquid outlets, and the heat exchanger is connected to each of the liquid inlets; The liquid cooling system of claim 1 .

3. a filter, the liquid inlet end of the filter being connected to the liquid outlet end of the first liquid pump, and the liquid outlet end of the filter being connected to the liquid inlet end of the first liquid pump; Alternatively, the liquid inlet end of the filter is connected to the cooling unit, and the liquid outlet end of the filter is connected to the liquid inlet end of the first liquid pump. The liquid cooling system of claim 2 .

4. The liquid inlet end of the second control valve is connected to the liquid outlet end of the first liquid pump, and the liquid outlet end of the second control valve is connected to the liquid inlet end of the first liquid pump. The liquid cooling system of claim 2 .

5. The cooling unit includes at least two first subunits, each of which includes one of the cavities.

5. The liquid cooling system according to claim 1, wherein the liquid cooling system comprises: a cooling element;

6. The cooling unit includes at least one second subunit, the second subunit having at least two of the cavities.

5. The liquid cooling system according to claim 1, wherein the liquid cooling system comprises: a cooling element;

7. the second subunit includes a housing, a liquid inlet pipe, and a liquid outlet pipe, the housing having an internal cavity provided with at least one partition plate that divides the internal cavity into at least two of the cavities, the liquid inlet and the liquid outlet being both provided in the housing; the liquid inlet pipe and the liquid outlet pipe are located on opposite sides of the housing, and both of the liquid inlets communicate with the liquid inlet pipes, and both of the liquid outlets communicate with the liquid outlet pipes.

7. The liquid cooling system of claim 6.

8. the liquid inlet and the liquid outlet are both adjacent to a top portion of the cooling unit; or one of the liquid inlet and the liquid outlet is close to a top portion of the cooling unit and the other is close to a bottom portion of the cooling unit.

5. The liquid cooling system according to claim 1, wherein the liquid cooling system comprises: a cooling element;

9. and a fluid distributor located between the cooling unit and the heat exchange unit, the cooling unit and the heat exchange unit both connected to the fluid distributor.

5. The liquid cooling system according to claim 1, wherein the liquid cooling system comprises: a cooling element;

10. The liquid supply unit further includes a liquid supply unit including a liquid storage tank and a second liquid pump, the second liquid pump being connected to the liquid storage tank and the first liquid pump.

5. The liquid cooling system according to claim 2, wherein the liquid cooling system comprises: a cooling element;

11. A method for controlling the liquid cooling system according to any one of claims 1 to 4, comprising: obtaining operating parameters of the liquid cooling system; If the operating parameter does not fall within a predetermined range, adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve; 1. A method for controlling a liquid cooling system, comprising:

12. The step of obtaining operating parameters of the liquid cooling system comprises: obtaining a first pressure of the cooling liquid at a liquid inlet end of the first liquid pump and a second pressure of the cooling liquid at a liquid outlet end of the first liquid pump, and obtaining a difference between the second pressure and the first pressure; The method of claim 11, wherein the liquid cooling system is controlled by the control circuit.

13. The step of obtaining operating parameters of the liquid cooling system comprises: obtaining a first flow rate of the cooling liquid at a liquid inlet end of the first liquid pump and a second flow rate of the cooling liquid at a liquid outlet end of the first liquid pump, and obtaining a difference between the second flow rate and the first flow rate; The method of claim 11, wherein the liquid cooling system is controlled by the control circuit.

14. The step of obtaining operating parameters of the liquid cooling system comprises: obtaining a first temperature of the cooling liquid at a liquid inlet end of the first liquid pump; The method of claim 11, wherein the liquid cooling system is controlled by the control circuit.

15. When the operating parameter does not fall within a preset range, the step of adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve includes: reducing the rotational speed of the first liquid pump when the difference between the second pressure and the first pressure is greater than a maximum value of a first preset range, and increasing the rotational speed of the first liquid pump when the difference between the second pressure and the first pressure is less than a minimum value of the first preset range; or increasing the opening degree of the second control valve when the difference between the second pressure and the first pressure is greater than the maximum value of the first preset range, and decreasing the opening degree of the second control valve when the difference between the second pressure and the first pressure is less than the minimum value of the first preset range; Alternatively, when the difference between the second pressure and the first pressure is greater than the maximum value of the first preset range, reducing the rotation speed of the first liquid pump, and when the rotation speed of the first liquid pump decreases to a threshold value and the difference between the second pressure and the first pressure is still greater than the maximum value of the first preset range, increasing the opening degree of the second control valve; reducing the opening of the second control valve when the difference between the second pressure and the first pressure is less than the minimum value of the first preset range, and increasing the rotation speed of the first liquid pump when the second control valve is closed and the difference between the second pressure and the first pressure is still less than the minimum value of the first preset range; The method of claim 12, further comprising:

16. When the operating parameter does not fall within a preset range, the step of adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve includes: reducing the rotational speed of the first liquid pump when the difference between the second flow rate and the first flow rate is greater than a maximum value of a second preset range, and increasing the rotational speed of the first liquid pump when the difference between the second flow rate and the first flow rate is less than a minimum value of the second preset range; or increasing the opening degree of the second control valve when the difference between the second flow velocity and the first flow velocity is greater than the maximum value of the second preset range, and decreasing the opening degree of the second control valve when the difference between the second flow velocity and the first flow velocity is less than the minimum value of the second preset range; Alternatively, when the difference between the second flow rate and the first flow rate is greater than the maximum value of the second preset range, reducing the rotation speed of the first liquid pump, and when the rotation speed of the first liquid pump decreases to a threshold value and the difference between the second flow rate and the first flow rate is still greater than the maximum value of the second preset range, increasing the opening degree of the second control valve; reducing the opening of the second control valve when the difference between the second flow rate and the first flow rate is less than the minimum value of the second preset range, and increasing the rotation speed of the first liquid pump when the second control valve is closed and the difference between the second flow rate and the first flow rate is still less than the minimum value of the second preset range; The method of claim 13, further comprising:

17. When the operating parameter does not fall within a preset range, the step of adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve includes: reducing the rotational speed of the first liquid pump when the first temperature is less than a minimum value of a third preset range, and increasing the rotational speed of the first liquid pump when the first temperature is greater than a maximum value of the third preset range; or increasing the aperture of the second control valve when the first temperature is lower than a minimum value of the third preset range, and decreasing the aperture of the second control valve when the first temperature is higher than a maximum value of the third preset range; Alternatively, when the first temperature is less than the minimum value of the third preset range, reducing the rotation speed of the first liquid pump, and when the rotation speed of the first liquid pump decreases to a threshold value and the first temperature is still less than the minimum value of the third preset range, increasing the opening degree of the second control valve; decreasing the opening of the second control valve when the first temperature is greater than the maximum value of the third preset range, and increasing the rotation speed of the first liquid pump when the second control valve is closed and the first temperature is still greater than the maximum value of the third preset range; The method of claim 14, further comprising:

18. If the operating parameter falls within the preset range, the method comprises: obtaining a second temperature of the cooling liquid at a liquid outlet corresponding to each cavity; adjusting a corresponding first regulator valve based on the second temperature; The method of claim 14 further comprising:

19. 1. A control system for a liquid cooling system, comprising: a first pressure detection unit for detecting a first pressure of the cooling liquid at the liquid inlet end of the first liquid pump; a second pressure detection unit for detecting a second pressure of the cooling liquid at the liquid outlet end of the first liquid pump; a control unit electrically connected to both the first pressure detection unit and the second pressure detection unit, and configured to adjust the rotation speed of the first liquid pump and / or the aperture of the second control valve when a difference between the second pressure and the first pressure does not fall within a first preset range; 1. A control system for a liquid cooling system, comprising:

20. 1. A control system for a liquid cooling system, comprising: a first flow rate detection unit for detecting a first flow rate of the cooling liquid at the liquid inlet end of the first liquid pump; a second flow rate detection unit for detecting a second flow rate of the cooling liquid at the liquid outlet end of the first liquid pump; a control unit electrically connected to both the first flow rate detection unit and the second flow rate detection unit, and configured to adjust the rotation speed of the first liquid pump and / or the aperture of the second control valve when a difference between the second flow rate and the first flow rate is not within a second preset range; 1. A control system for a liquid cooling system, comprising:

21. 1. A control system for a liquid cooling system, comprising: a temperature sensing unit for sensing a first temperature of the cooling liquid at the liquid inlet end of the first liquid pump; a control unit electrically connected to the temperature detection unit, for adjusting the rotation speed of the first liquid pump and / or the opening degree of the second control valve when the first temperature is not within a third preset range; 1. A control system for a liquid cooling system, comprising:

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