Liquid cooling device, control method, control system and readable storage medium

Abstract

The invention discloses a liquid cooling device, a control method, a control system and a readable storage medium, relates to the field of heat dissipation, belongs to a heat exchange device in strategic emerging industry classification and international patent classification, and is used for enabling liquid supply back pressure of a distributed liquid cooling device to meet requirements. The liquid cooling device comprises a first flow path, a second flow path, a first pressure adjusting device, a back pressure pump and at least one heat exchange assembly. The second flow path communicates with the first flow path and is configured to receive the fluid passing through the heat exchange assembly. The first pressure adjustment device is attached to the first flow path. The back pressure pump is attached to the first flow path. Each heat exchange assembly comprises a first branch, a second branch, a heat exchanger, a liquid supply pump and a second pressure adjusting device. The second branch is located at the downstream of the first branch, and the heat exchanger is arranged between the first branch and the second branch; the liquid supply pump is positioned between the first branch and the heat exchanger; the second pressure adjusting device communicates with the first branch and is located on the upstream of the liquid supply pump. The scheme is flexible to adjust.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation, and more specifically to a liquid cooling device, a control method, a control system, and a readable storage medium. Background Technology

[0002] With the rapid development of chip technology, high-temperature resistant chips have gradually entered the engineering application stage. Against this backdrop, electronic devices in scenarios such as large antennas and supercomputing centers have placed new demands on liquid cooling systems: the coolant supply temperature has increased from the original low-temperature supply below 30°C to the supply temperature below 65°C. This change in demand means that liquid cooling systems no longer need to use compressors for low-temperature cooling of the coolant; instead, they can use fans to directly cool the coolant at room temperature. This cooling method is simply referred to as ambient cooling.

[0003] To meet the varying heat dissipation requirements of electronic devices, the liquid cooling system employs a modular design. A single heat exchange component can exchange 30kW to 60kW of heat, and by connecting multiple heat exchange components in parallel, a maximum heat exchange capacity of 480kW can be achieved (based on 8 heat exchange components).

[0004] For ambient cooling liquid cooling systems, the proper functioning of the liquid supply pump is fundamental to its stable operation. Based on the pump's operating characteristics, the back pressure at its inlet must be higher than its net positive suction head (NPSH). Otherwise, cavitation will occur during operation, damaging the impeller and ultimately causing pump failure, thus affecting the entire liquid cooling system's operation. Here, NPSH is measured in meters, and a back pressure exceeding NPSH specifically means that the back pressure value in meters is greater than the NPSH value.

[0005] To ensure the normal circulation of coolant in a multi-module parallel system, two coolant supply methods are currently used: centralized coolant supply and decentralized coolant supply.

[0006] Centralized liquid supply requires 1-2 large liquid supply pumps (no independent liquid supply pump is installed within a single heat exchange component), and a liquid replenishment device is used to maintain the back pressure at the inlet of the liquid supply pumps. This method has significant drawbacks: the liquid supply pumps are bulky, and the noise level of a single liquid supply pump is high (generally exceeding 80 dB(A)); in addition, due to the limited number of liquid supply pumps, a failure of a single liquid supply pump will directly cause the entire liquid cooling system to shut down, resulting in poor reliability.

[0007] The inventors discovered that existing technologies suffer from at least the following problems: Decentralized liquid supply effectively solves the aforementioned problems of centralized liquid supply. This method installs a small liquid supply pump in each heat exchange component, dedicated to supplying liquid to that component. Even if the liquid supply pumps in other modules fail, the normal operation of this heat exchange component will not be affected, effectively improving the reliability of the liquid cooling device. However, decentralized liquid supply also introduces new problems: due to uneven liquid distribution in the main pipe, differences in the suction inlet pressure of the liquid supply pumps in each heat exchange component can occur. The back pressure value of some heat exchange components may be lower than the net positive suction head (NPSH) of the liquid supply pump, posing a risk of pump failure. Summary of the Invention

[0008] This invention proposes a liquid cooling device, a control method, a control system, and a readable storage medium to ensure that the liquid supply back pressure of the distributed liquid cooling device meets the requirements.

[0009] This invention provides a liquid cooling device, comprising: The first flow path is configured to provide fluid; A second flow path, connected to the first flow path, is configured to receive the fluid after passing through the heat exchange assembly; A first pressure regulating device is installed in the first flow path; A back pressure pump is installed in the first flow path and located upstream of the first pressure regulating device; and At least one heat exchange component, each of the heat exchange components including a first branch, a second branch, a heat exchanger, a liquid supply pump, and a second pressure regulating device; The second branch is located downstream of the first branch, the heat exchanger is arranged between the first branch and the second branch and is connected to both the first branch and the second branch; the liquid supply pump is located between the first branch and the heat exchanger and is connected to both; the second pressure regulating device is connected to the first branch and is located upstream of the liquid supply pump.

[0010] In some embodiments, each of the heat exchange components further includes a switching valve installed between the second pressure regulating device and the second branch to control the connection and disconnection between the second pressure regulating device and the second branch.

[0011] In some embodiments, the first pressure regulating device includes an expansion tank; and / or, the second pressure regulating device includes an expansion tank.

[0012] In some embodiments, the volume of the first pressure regulating device is larger than the volume of the second pressure regulating device.

[0013] In some embodiments, there are multiple heat exchange components, and each heat exchange component is arranged in parallel in the first flow path.

[0014] In some embodiments, the set back pressure of each of the second pressure regulating devices is the same.

[0015] In some embodiments, the liquid cooling device further includes: A pressure sensing element is installed in the second flow path to detect fluid pressure; and / or, A flow monitoring element is installed in the second flow path to detect the return flow rate; and / or, A temperature monitoring element is installed in the second flow path to detect the return liquid temperature.

[0016] In some embodiments, the liquid cooling device further includes: The user thermal load unit is installed in the second flow path.

[0017] This invention also provides a method for controlling a liquid cooling device, comprising the following steps: Start the liquid cooling device provided by any of the technical solutions of this invention; Connect the second pressure regulating device and the second branch of the liquid cooling device; Determine the magnitude of the fluid pressure in the second flow path and the first set back pressure value; If the fluid pressure in the second flow path is greater than or equal to the first set back pressure value, then disconnect the second pressure regulating device and the second branch of the liquid cooling device. Determine the magnitude of the inlet pressure of the liquid supply pump of each heat exchange component and the second set back pressure value; If the inlet pressure of the liquid supply pump is greater than or equal to the second set back pressure value, then the liquid supply pump is turned on.

[0018] In some embodiments, if the fluid pressure in the second flow path is less than the first set back pressure value, the back pressure pump is activated to replenish fluid to the second flow path.

[0019] In some embodiments, the liquid cooling device control method further includes the following steps: Continue monitoring the fluid pressure in the second flow path after replenishment. If the fluid pressure in the second flow path is greater than or equal to the first set back pressure value, then shut down the back pressure pump; otherwise, the back pressure pump continues to replenish fluid to the second flow path.

[0020] In some embodiments, after a set duration has elapsed since the second pressure regulating device and the second branch of the liquid cooling device were turned on, the second pressure regulating device and the second branch of the liquid cooling device are turned off.

[0021] In some embodiments, the inlet pressure of the liquid supply pump of each heat exchange component and the magnitude of the second set back pressure value are determined respectively; The liquid supply pump of the heat exchange component is turned on when the inlet pressure of the liquid supply pump of the heat exchange component is greater than or equal to the second set back pressure value.

[0022] In some embodiments, the liquid cooling device control method further includes the following steps: The liquid supply pump of the heat exchange component is shut off if the following conditions are not met, and the second pressure regulating device of the heat exchange component is connected to the second branch to increase the inlet pressure of the liquid supply pump: the inlet pressure of the liquid supply pump of the heat exchange component is greater than or equal to the second set back pressure value.

[0023] This invention also provides a liquid cooling device control system, comprising: Memory; and A processor coupled to the memory is configured to execute a liquid cooling device control method as provided in any of the technical solutions of the present invention, based on instructions stored in the memory.

[0024] This invention also provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the liquid cooling device control method provided by any of the technical solutions of this invention.

[0025] The liquid cooling device provided in this invention belongs to the category of heat exchange devices in the strategic emerging industries classification and international patent classification. By configuring a separate liquid supply pump and a second pressure regulating device for each heat exchange component, the liquid cooling device can specifically boost the pressure of heat exchange components with insufficient inlet pressure of the liquid supply pump. This ensures that each heat exchange component operates normally according to its own pressure state, reducing or even avoiding the problem of some heat exchange components failing to start due to insufficient back pressure. This ensures stable overall liquid supply to the liquid cooling device, improves the adaptability of heat exchange components to different operating conditions, and enhances heat dissipation efficiency and system reliability.

[0026] Furthermore, the decentralized arrangement of the liquid supply pumps offers the following advantages. First, it ensures the reliable operation of the liquid supply pumps in each heat exchange component, providing a stable liquid supply capacity and thus guaranteeing a stable liquid supply to the liquid cooling system. Second, the independent arrangement of the liquid supply pumps for each heat exchange component allows for the individual determination of the inlet pressure of each pump, ensuring uniform back pressure values ​​across the liquid cooling system's piping and effectively preventing uneven back pressure values ​​among the pumps in multiple heat exchange components, thus guaranteeing sufficient overall back pressure for the liquid cooling system. Third, the decentralized liquid supply system distributes the existing main liquid supply pump to each heat exchange component, directly reducing the size of the pumps. If the liquid cooling system has only one liquid supply pump, that pump must be large enough to meet the requirements; however, if each heat exchange component has its own dedicated liquid supply pump, each pump can be very small. Moreover, this decentralized design allows smaller liquid supply pumps to replace the main pump, reducing noise by 10 dB(A)-20 dB(A), achieving a low-noise liquid cooling system. Furthermore, compared with traditional centralized liquid supply, the technical solution of this invention has higher reliability. Even if a single liquid supply pump fails, the liquid cooling device can still output the heat exchange of the remaining heat exchange components, thus significantly reducing the failure rate. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the liquid cooling device structure provided for some embodiments of the present invention.

[0028] Figure 2 This is a schematic diagram of the heat exchange components of a liquid cooling device provided in some embodiments of the present invention.

[0029] Figure 3 This is a schematic diagram of a liquid cooling device control method provided in some other embodiments of the present invention.

[0030] Figure label: 1. First flow path; 2. Second flow path; 3. First pressure regulating device; 4. Back pressure pump; 5. Heat exchange assembly; 6. Pressure detection element; 7. Flow monitoring element; 8. Temperature monitoring element; 9. User heat load unit; 10. Water tank; 11. Pressure relief valve; 12. Check valve; 13. Filter; 14. Central control panel; 15. Sub-control panel; 51. First branch; 52. Second branch; 53. Heat exchanger; 54. Liquid supply pump; 55. Second pressure regulating device; 56. Switching valve. Detailed Implementation

[0031] The following is combined Figures 1-3The technical solutions provided by this invention will be described in more detail below. The descriptions of exemplary embodiments are merely illustrative and are in no way intended to limit this disclosure or its application or use. This disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make this disclosure thorough and complete, and to fully express the scope of this disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, the composition of materials, numerical expressions, and values ​​set forth in these embodiments should be interpreted as merely exemplary and not as limiting.

[0032] The terms “first,” “second,” and similar words used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different parts. Words such as “including” or “contains” mean that the element preceding the word covers the element listed after the word, and do not exclude the possibility of covering other elements as well.

[0033] In this disclosure, when a specific device is described as being located between a first device and a second device, an intermediary device may or may not be present between the specific device and the first or second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediary device, or it may be not directly connected to the other devices but have an intermediary device.

[0034] All terms used in this disclosure, including technical or scientific terms, have the same meaning as understood by one of ordinary skill in the art to which this disclosure pertains, unless otherwise specifically defined. It should also be understood that terms defined in a general dictionary, such as a dictionary, should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and not as having an idealized or highly formalized meaning, unless expressly defined herein.

[0035] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment shall be considered part of the specification.

[0036] The dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Common structural elements or elements of the same kind are given the same reference numerals in the various drawings, and repeated descriptions of them are omitted where appropriate.

[0037] See Figure 1 and Figure 2This invention provides a liquid cooling device, including a first flow path 1, a second flow path 2, a first pressure regulating device 3, a back pressure pump 4, and at least one heat exchange assembly 5. The first flow path 1 is configured to supply fluid to each heat exchange assembly 5. The second flow path 2 communicates with the first flow path 1 and is configured to receive fluid after it has passed through the heat exchange assembly 5. The first pressure regulating device 3 is installed in the first flow path 1. The back pressure pump 4 is installed in the first flow path 1 and is located upstream of the first pressure regulating device 3. Each heat exchange assembly 5 includes a first branch 51, a second branch 52, a heat exchanger 53, a liquid supply pump 54, and a second pressure regulating device 55. In this configuration, the second branch 52 is located downstream of the first branch 51; the heat exchanger 53 is arranged between the first branch 51 and the second branch 52, and is connected to both; the liquid supply pump 54 is located between the first branch 51 and the heat exchanger 53, and is connected to both; the second pressure regulating device 55 is connected to the first branch 51 and is located upstream of the liquid supply pump 54. Here, upstream and downstream are defined according to the order of fluid flow. The liquid flows from upstream to downstream.

[0038] The first flow path 1 is used to supply fluid. Its structural parameters, such as pipe diameter, can be set according to actual needs, specifically to a size suitable for fluid transport, and its shape is pipe-like. The second flow path 2 is connected to the first flow path 1 and is used to receive the fluid after passing through the heat exchange component 5. It is also pipe-like, and its pipe diameter and other specifications are also set as needed. The first pressure regulating device 3 is installed in the first flow path 1 and can be in the form of an expansion tank, etc., to supplement and stabilize the fluid pressure in the first flow path 1. The back pressure pump 4 is installed in the second flow path 2, upstream of the first pressure regulating device 3. The back pressure pump 4 is used to regulate the pressure in the second flow path 2, and its specifications are determined according to the overall flow rate and pressure requirements of the device. The first pressure regulating device 3 and the second flow path 2 are kept in a conductive state to regulate the pressure in the second flow path 2 in real time. The back pressure pump 4 is connected to the water tank 10. The fluid from the back pressure pump 4 can flow to the first pressure regulating device 3 and the second pressure regulating device 55 to increase the fluid pressure in the main path and branch path through the second pressure regulating device 55. The back pressure pump 4 is also connected back to the water tank 10 through the pressure relief valve 11. When the pressure exceeds the pressure of the pressure relief valve 11, the fluid output by the back pressure pump 4 flows back to the water tank 10 through the pressure relief valve 11. The outlet of the back pressure pump 4 is connected to the check valve 12, which enables unidirectional fluid flow and prevents backflow.

[0039] Specifically, the first pressure regulating device 3 located on the main pipeline does not have a solenoid valve; it is a two-way constant-pressure expansion tank. When the pressure in the main pipeline is low, the expansion tank releases liquid into the main pipeline; when the pressure in the main pipeline is high, the expansion tank absorbs the liquid discharged from the main pipeline, maintaining a constant back pressure. When the expansion tank is full, the pressure in the main pipeline continues to exceed the set value, and the pressure relief valve 11 opens, discharging the liquid discharged from the main pipeline into the water tank 10.

[0040] Each heat exchange assembly 5 includes a first branch 51, a second branch 52, a heat exchanger 53, a liquid supply pump 54, and a second pressure regulating device 55. The first branch 51 and the second branch 52 are both pipe-like, with the second branch 52 downstream of the first branch 51. The heat exchanger 53 is arranged between and connected to both the first branch 51 and the second branch 52, used to achieve heat exchange between the fluid and the outside environment; its form can be, for example, a plate-fin type. A fan or similar component is used to dissipate heat from the heat exchanger 53. The liquid supply pump 54 is located between and connected to both the second branch 52 and the heat exchanger 53, used to provide power for the fluid flow within the heat exchange assembly 5; its power and other parameters are determined according to the requirements of the heat exchange assembly 5. The second pressure regulating device 55 is connected to the second branch 52 and upstream of the liquid supply pump 54; it can also be an expansion tank, used to ensure the inlet pressure of the liquid supply pump 54, i.e., the back pressure.

[0041] The fluid flow path of the liquid cooling device is as follows: the first flow path 1 provides fluid, which enters the first branch 51 of the heat exchange component 5. After the liquid supply pump 54 is turned on, the fluid is pumped into the heat exchanger 53 for heat exchange. Then, the fluid flows into the second branch 52. The second pressure regulating device 55 can ensure the back pressure of the liquid supply pump 54. Finally, the fluid returns through the second flow path 2. The back pressure pump 4 regulates the pressure of the second flow path 2, and the first pressure regulating device 3 stabilizes the pressure of the first flow path 1.

[0042] This liquid cooling device can be applied to the cooling of various heat-generating devices, such as electronic devices in scenarios like chips, large antennas, and supercomputing centers. When used for chip cooling, multiple heat exchange components 5 can be set up to dissipate heat from different chips.

[0043] The liquid cooling device provided by the above technical solution can effectively cool electronic equipment. Through the cooperation of various components, it ensures stable fluid circulation and improves heat dissipation efficiency. The first pressure regulating device 3 and the second pressure regulating device 55 ensure the pressure of the first flow path 1 and the inlet pressure of the liquid supply pump 54, guaranteeing the reliability of the device operation. The back pressure pump 4 works in conjunction with the liquid supply pump 54 to optimize the fluid flow path and improve heat exchange efficiency.

[0044] In some embodiments, the first pressure regulating device 3 includes an expansion tank. And / or, the second pressure regulating device 55 includes an expansion tank.

[0045] The expansion tank has a tank body, the volume of which is determined based on the pressure fluctuation range of the fluid in the first flow path 1 and the overall requirements of the device, specifically a suitable size to effectively buffer pressure changes. A first pressure regulating device 3 is installed in the first flow path 1 to regulate the fluid pressure within it. For example, when the pressure in the first flow path 1 fluctuates, the expansion tank can absorb or release fluid, stabilizing the pressure in the first flow path 1, preventing large pressure fluctuations from damaging the device, ensuring stable fluid circulation in the first flow path 1, and thus improving the reliability of the entire liquid cooling device.

[0046] The second pressure regulating device 55 also employs an expansion tank, the volume of which is set according to the fluid pressure changes in the second branch 52. This second pressure regulating device 55 is connected to the second branch 52 and located upstream of the supply pump 54. In the second branch 52, when the pressure of the supply pump 54 is insufficient, the expansion tank can supplement the pressure, ensuring that the inlet pressure of the supply pump 54 meets the requirements. This configuration ensures stable operation of the supply pump 54, improves its efficiency and service life, guarantees stable fluid flow within the heat exchange assembly 5, and enhances the heat exchange effect of the heat exchange assembly 5.

[0047] Both the first pressure regulating device 3 and the second pressure regulating device 55 employ expansion tanks. These two expansion tanks work together to regulate the pressure of the first flow path 1 and the second branch 52, respectively. Throughout the operation of the liquid cooling system, both the first flow path 1 and the second branch 52 of the heat exchange component 5 can respond promptly to pressure changes caused by various operating conditions, further improving the overall pressure stability of the liquid cooling system, optimizing heat dissipation performance, and ensuring efficient and reliable operation of the system under different conditions.

[0048] In some embodiments, each heat exchange component 5 further includes a switching valve 56, which is installed between the second pressure regulating device 55 and the second branch 52 to control the connection and disconnection between the second pressure regulating device 55 and the second branch 52.

[0049] The switching valve 56 can specifically be a solenoid valve. The solenoid valve enables automated control. By connecting to the control circuit, it can automatically control the connection and disconnection between the second pressure regulating device 55 and the second branch 52 based on preset system parameters or signals from external sensors. For example, when the system detects that the inlet pressure of the liquid supply pump 54 does not meet the requirements, the control circuit can quickly send a command to the solenoid valve to promptly disconnect the connection between the second pressure regulating device 55 and the second branch 52, ensuring the stable operation of the liquid cooling device.

[0050] Furthermore, solenoid valves have a fast response speed. Compared to some manual valves or other types of mechanical valves, solenoid valves can open or close in a very short time. This is crucial for liquid cooling systems to cope with emergencies. In abnormal situations, the solenoid valve can quickly disconnect the connection between the second pressure regulating device 55 and the second branch 52, ensuring the safety of the liquid supply pump 54 and the entire liquid cooling system.

[0051] In addition, the solenoid valve offers high control precision. It can precisely control the flow of fluid, ensuring that the connection between the second pressure regulating device 55 and the second branch 52 can be accurately regulated under different operating conditions. The solenoid valve allows for precise adjustment of the timing and duration of the second pressure regulating device 55's connection to the second branch 52, thereby more effectively maintaining pressure stability in the second branch 52 and improving the heat dissipation efficiency and stability of the liquid cooling system.

[0052] Finally, the solenoid valve has a compact structure and small size. Given the limited space in heat exchange component 5, it does not occupy excessive space, which is beneficial for the compact layout and miniaturized design of the entire liquid cooling system, facilitating installation and maintenance. At the same time, its energy consumption is relatively low, meeting the control requirements of the device without excessively increasing the system's energy burden, thus complying with energy-saving requirements.

[0053] See also Figure 1 and Figure 2 In some embodiments, the volume of the first pressure regulating device 3 is greater than the volume of the second pressure regulating device 55.

[0054] In the liquid cooling device, the first pressure regulating device 3 is an expansion tank with a larger volume, while the second pressure regulating device 55 is an expansion tank with a smaller volume.

[0055] The first flow path 1 is responsible for supplying fluid to and recovering fluid from each heat exchange component 5. It involves a large total fluid volume and a relatively wide range of pressure fluctuations. The first pressure regulating device 3 (large-capacity expansion tank) is installed in the first flow path 1. Its large volume effectively addresses significant pressure fluctuations caused by various factors in the first flow path 1. For example, in the liquid cooling system of a large data center, the heat dissipation requirements of numerous servers change constantly, resulting in frequent and large fluctuations in the fluid pressure of the first flow path 1. The large-capacity first pressure regulating device 3 can effectively buffer these pressure changes, ensuring the stability of the fluid pressure in the first flow path 1.

[0056] The second branch 52 within the heat exchange assembly 5 receives fluid from a single heat exchange assembly 5, and its flow rate is relatively smaller than that of the first flow path 1. A second pressure regulating device 55 (small-volume expansion tank) is installed in the second branch 52, which ensures that the inlet pressure of the liquid supply pump 54 meets the requirements.

[0057] The second pressure regulating device 55, specifically using an expansion tank as an example, has its size designed based on the inlet pressure range required by the supply pump 54 and the specific operating conditions of the second branch 52. When the fluid pressure in the second branch 52 is insufficient, it will manifest as insufficient inlet pressure of the supply pump 54, i.e., less than the second set back pressure value. The expansion tank can regulate the pressure by absorbing or releasing fluid. The second set back pressure value is a preset value, for example, 0.18–0.35 MPa. The second pressure regulating device 55 uses an expansion tank with a pre-charge pressure of 0.15 MPa, and the second set back pressure value is slightly higher than the pre-charge pressure of the expansion tank.

[0058] During the operation of the liquid cooling device, fluid flows in the second branch 52. Due to changes in the operating status of the liquid supply pump 54 and heat exchange in the heat exchanger 53, the pressure in the second branch 52 will change. If the pressure is too high, the second pressure regulating device 55 absorbs some fluid to reduce the pressure; if the pressure is too low, the expansion tank releases some fluid to increase the pressure, so that the liquid supply pump 54 can only start when the inlet pressure of the liquid supply pump 54 is greater than the second set back pressure value, thereby enabling the liquid supply pump 54 to operate mainly and its inlet pressure to always be maintained at a suitable level.

[0059] In the above technical solution, during operation, the fluid pressure in the second branch 52 fluctuates due to various factors such as the operation of the liquid supply pump 54, heat exchange in the heat exchanger 53, and pipeline resistance. When the pressure is lower than the second set back pressure value, the second pressure regulating device 55 supplies liquid to the second branch 52 to increase the fluid pressure, so that the inlet pressure of the liquid supply pump 54 is always higher than the second set back pressure value.

[0060] The reason for maintaining the inlet pressure of the liquid supply pump 54 above the second set back pressure value is that if the inlet pressure falls below this value, the liquid will rapidly vaporize and form bubbles in the low-pressure zone of the pump during operation. These bubbles will then suddenly burst when they reach the high-pressure zone, generating a strong impact force that strikes the impeller inside the pump. Over time, this frequent impact will damage the impeller, causing surface pitting, cracks, and ultimately leading to the failure of the liquid supply pump 54.

[0061] The second pressure regulating device 55 effectively reduces or even avoids cavitation of the liquid supply pump 54 by maintaining the inlet pressure of the liquid supply pump 54 greater than the second set back pressure value, ensuring stable operation of the liquid supply pump 54, extending its service life, ensuring smooth fluid circulation in the heat exchange component 5, thereby improving the heat dissipation effect and operational reliability of the entire liquid cooling device.

[0062] In some embodiments, there are multiple heat exchange components 5, and each heat exchange component 5 is arranged in parallel in the first flow path 1.

[0063] Multiple heat exchange components 5 are connected in parallel. Each heat exchange component 5 includes a first branch 51, a second branch 52, a heat exchanger 53, a liquid supply pump 54, a second pressure regulating device 55, and a switching valve 56. The first flow path 1 is a pipe structure, and its pipe diameter is determined according to the total flow required by the multiple heat exchange components 5. It is larger than the pipe diameter of the first branch 51 of a single heat exchange component 5 to ensure that sufficient fluid can be provided to each heat exchange component 5.

[0064] One end of the first branch 51 of each heat exchange component 5 is connected to the first flow path 1, so that the first flow path 1 can supply liquid to each heat exchange component 5 by diverting the liquid. The other end of the second branch 52 of each heat exchange component 5 is finally connected to the second flow path 2, so that the heat-exchanged fluid is returned.

[0065] The fluid supplied by the first flow path 1 is proportionally distributed into each parallel heat exchange component 5 according to the resistance at the location of each heat exchange component 5 and its own characteristics. Within the heat exchange component 5, after heat exchange by the heat exchanger 53, the fluid flows into the second flow path 2 through the second branch 52 under the action of the liquid supply pump 54. For example, in a liquid cooling system of a large data center, servers in different areas have different heat generation conditions. Each heat exchange component 5 obtains a corresponding flow rate of fluid from the first flow path 1 for heat dissipation based on the heat load of the servers in its corresponding area.

[0066] Multiple heat exchange components 5 are arranged in parallel. On the one hand, the position and number of each heat exchange component 5 can be flexibly adjusted according to the layout of the heat-generating equipment. For example, in an electronic equipment cabinet, more heat exchange components 5 can be arranged near equipment with high heat generation. On the other hand, when a heat exchange component 5 fails, the valves associated with it can be closed without affecting the normal operation of other heat exchange components 5, which facilitates maintenance and repair.

[0067] Furthermore, the parallel arrangement of multiple heat exchange components 5 allows for simultaneous heat dissipation from multiple heat sources, significantly improving heat dissipation efficiency. Each heat exchange component 5 operates relatively independently; if one fails, it will not affect the others, enhancing the overall reliability of the liquid cooling system. Moreover, this arrangement facilitates flexible adjustments to the heat dissipation layout according to actual needs, improving the system's adaptability to different operating conditions.

[0068] In some embodiments, the set back pressure of each of the second pressure regulating devices 55 is the same, that is, the second set back pressure value is the same.

[0069] Regardless of which heat exchange component 5, when the pressure in the second branch 52 changes due to factors such as the operation of the liquid supply pump 54 or heat exchange in the heat exchanger 53, the second pressure regulating device 55 adjusts it according to the same set back pressure value. For example, when the heat load of a heat exchange component 5 increases, causing the pressure in the second branch 52 to decrease, the second pressure regulating device 55 of that component will operate according to the set back pressure value, adjusting the pressure to ensure that the inlet pressure of the liquid supply pump 54 is greater than the second set back pressure value, reducing or even avoiding the occurrence of cavitation lines under the liquid supply pump 54. The second pressure regulating devices 55 of all heat exchange components 5 regulate their respective liquid supply pumps 54 to maintain the pressure stability of their respective second branches 52.

[0070] This setup is suitable for applications where the heat dissipation requirements of each heat exchange component 5 are relatively balanced. For example, in a scenario involving multiple servers of identical specifications, where each server generates similar amounts of heat and has similar heat dissipation needs, setting the same back pressure allows all heat exchange components 5 to operate in a similar state, ensuring consistent heat dissipation performance across all servers. Furthermore, during maintenance and debugging, only the same back pressure setting needs to be followed for inspection and adjustment, reducing maintenance complexity.

[0071] A consistent back pressure setting helps to ensure a uniform fluid pressure environment within each heat exchange component 5, making the entire liquid cooling system operate more stably. This ensures that all liquid supply pumps 54 operate within safe pressure ranges, effectively reducing or even eliminating cavitation and extending their service life. Furthermore, a unified setting standard facilitates system management and control, improving the overall reliability and operating efficiency of the liquid cooling system.

[0072] See also Figure 1 and Figure 2 In some embodiments, the liquid cooling device further includes a pressure sensing element 6, which is installed in the second flow path 2 to detect fluid pressure.

[0073] The pressure sensing element 6 is, for example, a pressure sensor. The pressure sensing element 6 is fixed to the second flow path 2, such as by a threaded connection or a flange connection, to ensure a tight connection, prevent fluid leakage, and accurately sense the fluid pressure.

[0074] During operation, the fluid pressure in the second flow path 2 fluctuates due to various factors, such as the heat exchange status of each heat exchange component 5 and the operating status of the back pressure pump 4. The pressure detection element 6 monitors these pressure changes in real time and converts the pressure information into an electrical signal, which is then transmitted to the control system. For example, if a heat exchange component 5 becomes blocked, causing an abnormal increase in pressure in the second flow path 2, the pressure detection element 6 can quickly detect the pressure change and promptly transmit the signal to the control system.

[0075] The control unit of the liquid cooling system can adjust the operating parameters of the system, such as the speed of the back pressure pump 4 and the operating frequency of the liquid supply pump 54, in real time based on the fluid pressure data fed back by the pressure detection element 6. Under different operating conditions, such as a sudden increase in the heat load of the heat-generating equipment, the system can adjust in a timely manner according to the pressure change to ensure the stable operation of the liquid cooling system.

[0076] The pressure detection element 6 provides the liquid cooling device with real-time pressure monitoring capabilities. Accurate detection of the pressure in the second flow path 2 allows for timely detection of abnormal conditions during the operation of the liquid cooling device, such as pipe blockages or component failures, facilitating proactive measures by staff. Simultaneously, real-time adjustments based on pressure feedback help optimize the operating efficiency of the liquid cooling device, ensuring the entire system maintains good heat dissipation performance under various operating conditions.

[0077] In some embodiments, the liquid cooling device further includes a flow monitoring element 7, which is installed in the second flow path 2 to detect the return flow rate.

[0078] The flow monitoring element 7 can be an electromagnetic flow meter, a turbine flow meter, etc. The flow monitoring element 7 is fixed to the second flow path 2, for example by welding or pipe clamp connection, to ensure a tight fit with the second flow path 2 and to accurately measure the return flow rate.

[0079] During operation, the return flow rate of the second flow path 2 will change due to various factors, such as the heat exchange efficiency of each heat exchange component 5, the operating status of the back pressure pump 4, and the delivery capacity of the supply pump 54. The flow monitoring element 7 continuously monitors these flow rate changes and transmits the flow information to the control system in the form of electrical signals. For example, if the heat exchange efficiency of a heat exchange component 5 suddenly decreases, the return flow rate may decrease accordingly. The flow monitoring element 7 will quickly detect this change and feed it back to the control system.

[0080] The control unit of the liquid cooling system can dynamically adjust various components based on the return liquid flow data fed back by the flow monitoring element 7. Under different operating conditions, such as changes in the power of the heating equipment, the control unit can adjust in a timely manner according to the flow rate changes to maintain the stable operation of the liquid cooling system.

[0081] The flow monitoring element 7 enables operators to monitor the flow rate of the second flow path 2 in real time. Accurate monitoring of the return liquid flow rate allows for timely detection of potential problems during operation, such as pipe blockages or component damage, facilitating timely maintenance and repair and preventing the escalation of equipment failures. Simultaneously, real-time adjustment based on flow feedback helps improve the operating efficiency of the liquid cooling system, ensuring excellent heat dissipation under various operating conditions.

[0082] In some embodiments, the liquid cooling device further includes a temperature monitoring element 8, which is installed in the second flow path 2 to detect the return liquid temperature. Common types of the temperature monitoring element 8 installed in the second flow path 2 include thermocouples and resistance temperature gauges.

[0083] During operation of the liquid cooling system, the return liquid temperature in the second flow path 2 is affected by the heat exchange of each heat exchange component 5. After each heat exchange component 5 dissipates heat from the heat source, the return liquid temperature will change. The temperature monitoring element 8 monitors this temperature change in real time and transmits the temperature signal to the control system. For example, if the temperature of the heat source corresponding to a certain heat exchange component 5 rises abnormally, the return liquid temperature will also rise, and the temperature monitoring element 8 can quickly detect this and provide feedback to the control system.

[0084] The control device of the liquid cooling unit can dynamically adjust the operating parameters of each component based on the return liquid temperature data fed back by the temperature monitoring element 8. For example, if the return liquid temperature is too high, the speed of the back pressure pump 4 and the supply pump 54 can be increased to accelerate fluid circulation and enhance heat dissipation. The operating status of each heat exchange component 5 can also be adjusted according to the return liquid temperature, such as controlling the switching valve 56 to change the operating mode of the pressure regulating device within the heat exchange component 5. Under different operating conditions, such as changes in ambient temperature or changes in the load of the heat-generating equipment, the system flexibly adjusts according to temperature changes to maintain stable operation of the unit. Specifically, the ambient temperature can be detected using the temperature detection element a.

[0085] Temperature monitoring element 8 provides real-time temperature information for the second flow path 2. Accurate monitoring of the return liquid temperature allows for timely detection of abnormal heat dissipation conditions, such as malfunction of heat exchange component 5 or uncontrolled temperature of the heat source, facilitating timely intervention to prevent equipment damage. Real-time adjustment based on temperature feedback optimizes the heat dissipation efficiency of the liquid cooling system, ensuring effective heat dissipation under various operating conditions and guaranteeing the normal operation of heat-generating equipment.

[0086] The control unit of the liquid cooling system includes a central control panel 14, to which each heat exchange component 5 is electrically connected, and the heat exchange components 5 are arranged in parallel. Each heat exchange component 5 has its own independent sub-control panel 15 for personalized control. The pressure detection element 6, flow monitoring element 7, and temperature monitoring element 8 are each electrically connected to the central control panel 14.

[0087] In some embodiments, the liquid cooling device further includes a user heat load unit 9, which is installed in the second flow path 2. A temperature sensor and a pressure sensor may also be installed upstream of the user heat load unit 9 to detect the supply liquid temperature and supply liquid pressure. Additionally, a filter 13, specifically a fine filter, may be installed upstream of the user heat load unit 9 to filter impurities in the fluid.

[0088] User heat load unit 9 is, for example, a server cluster or chip in a data center. User heat load unit 9 uses an adaptive connection method with the second flow path 2. For server clusters, a specially designed pipe interface may be used to ensure that the return liquid can smoothly enter the heat load unit, absorb heat, and then flow out. The connection process must ensure airtightness to prevent liquid leakage.

[0089] During operation, cooling fluid in the second flow path 2 flows into the user heat load unit 9. The fluid flows through the heat dissipation channels of the user heat load unit 9, absorbing the heat generated by its operation. Afterwards, the heat-carrying fluid flows out of the user heat load unit 9 and continues to circulate along the second flow path 2. The amount of heat generated by the user heat load unit 9 depends on its operating state; for example, the greater the computing load of the server, the more heat is generated.

[0090] The liquid cooling system can be tailored to different types of user heat load units 9. For example, for chips, the pipe layout, fluid flow rate, and temperature control of the liquid cooling system are set accordingly based on their working environment and heat dissipation requirements to meet the chip's heat dissipation needs.

[0091] The user heat load unit 9 is directly connected to the heat exchange component 5 of the liquid cooling device, which can efficiently transfer the heat generated by the user heat load unit 9, so that the user heat load unit 9 can operate stably at a suitable temperature.

[0092] See Figure 3The present invention also provides a liquid cooling device control method, comprising the following steps: Step S100: Start the liquid cooling device provided by any of the technical solutions of the present invention.

[0093] This section primarily focuses on the centralized control of the liquid cooling system. Whether each heat exchange component 5 can be activated depends on whether the activation conditions of each liquid supply pump 54 are met.

[0094] In step S200, the second pressure regulating device 55 and the second branch 52 of the liquid cooling device are turned on.

[0095] The second pressure regulating device 55 uses an expansion tank and is connected to the second branch 52 through components such as the switching valve 56, in order to prepare for regulating the inlet pressure of the liquid supply pump 54.

[0096] In some embodiments, after a set time has elapsed since the second pressure regulating device 55 and the second branch 52 of the liquid cooling device were turned on, the second pressure regulating device 55 and the second branch 52 of the liquid cooling device were turned off.

[0097] After the second pressure regulating device 55 and the second branch 52 of the liquid cooling device are activated in step S200, a set duration is determined, such as 30-60 seconds. This duration is predetermined based on the characteristics of the liquid cooling device and actual operating requirements. For example, in the initial stage of device startup, the pressure distribution within the system is not yet stable, and the second pressure regulating device 55 needs to regulate the pressure of the second branch 52 for a specific period of time to ensure that the inlet pressure of the liquid supply pump 54 can reach a stable state during this period.

[0098] Once the set time is reached, the operation of disconnecting the second pressure regulating device 55 and the second branch 52 of the liquid cooling unit is executed. This operation is achieved through control components such as the switching valve 56.

[0099] By using time control, while ensuring the safe operation of the liquid supply pump 54, the connection between the second pressure regulating device 55 and the second branch 52 can be disconnected at appropriate time points. This prevents unnecessary energy consumption that may result from prolonged operation of the second pressure regulating device 55, or problems such as component aging and damage due to long-term operation. Moreover, this timed control method makes the operation of the liquid cooling device more controllable, helps to improve the stability and reliability of the entire system, and ensures efficient operation under different working conditions.

[0100] Step S300: Determine the magnitude of the fluid pressure in the second flow path 2 and the first preset back pressure value. The first preset back pressure value is a preset value, for example, 0.18~0.35MPa. The first pressure regulating device 3 uses an expansion tank, and the pre-charge pressure of the expansion tank is 0.15MPa. The first preset back pressure value is slightly higher than the pre-charge pressure of the expansion tank. The first preset back pressure value is the same as the second preset back pressure value.

[0101] In step S300, it is necessary to determine the magnitude of the fluid pressure in the second flow path 2 and the first preset back pressure value. The pressure detection element 6 monitors the return pressure of the second flow path 2 in real time, and compares this pressure value with the preset first back pressure value. This step is used to determine whether the pressure in the second flow path 2 is within a suitable range.

[0102] In step S400, if the fluid pressure in the second flow path 2 is greater than or equal to the first set back pressure value, then disconnect the second pressure regulating device 55 and the second branch 52 of the liquid cooling device.

[0103] In step S400, if the fluid pressure in the second flow path 2 is greater than or equal to the first set back pressure value, this indicates that the pressure in the second flow path 2 is relatively high. At this time, the second pressure regulating device 55 and the second branch 52 of the liquid cooling device are disconnected through operations such as switching valve 56, to avoid excessive pressure affecting the second pressure regulating device 55 and related components, and to ensure the rationality and stability of system pressure regulation.

[0104] Step S500: Determine the magnitude of the inlet pressure of the liquid supply pump 54 of each heat exchange component 5 and the second set back pressure value.

[0105] In step S500, the inlet pressure of the liquid supply pump 54 of each heat exchange component 5 is compared with the second set back pressure value. The pressure at the inlet of the liquid supply pump 54 of each heat exchange component 5 needs to be compared with the second set back pressure value to determine whether the liquid supply pump 54 can operate safely and reduce or even prevent cavitation.

[0106] In step S600, if the inlet pressure of the liquid supply pump 54 is greater than or equal to the second set back pressure value, the liquid supply pump 54 is turned on.

[0107] In step S600, if the inlet pressure of the liquid supply pump 54 is greater than or equal to the second set back pressure value, it means that the inlet pressure of the liquid supply pump 54 meets the requirements. At this time, the liquid supply pump 54 is turned on, so that the fluid starts to circulate in the heat exchange component 5, thereby dissipating heat from the heat-generating equipment and ensuring the normal heat dissipation function of the entire liquid cooling device.

[0108] The above control method allows the liquid cooling device to adjust the working status of each component according to the pressure conditions, effectively avoiding damage to the device due to abnormal pressure, ensuring stable system operation, and improving heat dissipation efficiency and reliability.

[0109] In some embodiments, the liquid cooling device control method further includes step S700: if the fluid pressure in the second flow path 2 is less than the first set back pressure value, then the back pressure pump 4 is turned on to replenish the liquid in the second flow path 2.

[0110] Step S700 makes the control of the pressure in the second flow path 2 more reasonable. In step S700, if the fluid pressure is less than the first set back pressure value, it indicates that the pressure in the second flow path 2 is too low. At this time, the back pressure pump 4 is turned on, and the back pressure pump 4 starts to work, replenishing the fluid in the second flow path 2. The back pressure pump 4 is connected to the second flow path 2 through a specific pipeline. As the back pressure pump 4 operates, the amount of liquid in the second flow path 2 increases, thereby increasing the fluid pressure.

[0111] In step S700, when the pressure in the second flow path 2 is insufficient, it can be replenished in a timely manner to maintain the pressure in the second flow path 2 within a suitable range. This not only helps to ensure the stable fluid circulation of the entire liquid cooling device, but also prevents the normal operation of each heat exchange component 5 from being affected by excessively low pressure in the second flow path 2. Stable pressure in the second flow path 2 helps to ensure the smooth return flow of fluid in the heat exchange component 5, thereby ensuring the heat exchange efficiency of the heat exchanger 53 and improving the heat dissipation performance and operational reliability of the entire liquid cooling device.

[0112] In some embodiments, the liquid cooling device control method further includes the following step S800: continuing to detect the fluid pressure of the second flow path 2 after replenishment; if the fluid pressure of the second flow path 2 is greater than or equal to the first set back pressure value, then shutting off the back pressure pump 4; otherwise, the back pressure pump 4 continues to replenish the second flow path 2.

[0113] Step S800 allows for better dynamic adjustment of the pressure in the second flow path 2. During operation, the pressure detection element 6 continuously monitors the fluid pressure in the second flow path 2 after replenishment. If the monitored fluid pressure in the second flow path 2 is greater than or equal to the first set back pressure value, it indicates that the pressure in the second flow path 2 has reached or exceeded the appropriate range after replenishment by the back pressure pump 4. At this point, the back pressure pump 4 is turned off, and replenishment is stopped. This avoids excessive pressure in the second flow path 2, preventing damage to other components of the liquid cooling device. For example, excessive pressure may lead to pipe rupture, seal damage, or other problems.

[0114] Conversely, if the fluid pressure in the second flow path 2 is still lower than the first set back pressure value after replenishment, it indicates that the pressure has not yet reached the ideal state, and the back pressure pump 4 will continue to replenish the fluid in the second flow path 2. Through this continuous monitoring and adjustment mechanism, the pressure in the second flow path 2 is kept stable within a range close to the first set back pressure value.

[0115] The above technical solution enhances the accuracy and stability of pressure regulation in the second flow path 2 of the liquid cooling device. It can dynamically adjust the operating state of the back pressure pump 4 based on real-time pressure conditions, ensuring stable operation of the liquid cooling device under various operating conditions, further improving the overall heat dissipation efficiency and reliability of the device, and guaranteeing the normal operation of the entire system.

[0116] In some embodiments, when multiple heat exchange components 5 are connected in parallel, the inlet pressure of the liquid supply pump 54 of each heat exchange component 5 is determined to be greater than or equal to the second preset back pressure value. The liquid supply pump 54 of the heat exchange component 5 is turned on when the inlet pressure of the liquid supply pump 54 of the heat exchange component 5 is greater than or equal to the second preset back pressure value. Each heat exchange component 5 is controlled separately, relatively independent, and does not affect each other.

[0117] Since the heat exchange components 5 are arranged in parallel in the first flow path 1, each heat exchange component 5 has its own liquid supply pump 54, second pressure regulating device 55, and other components. When determining the difference between the inlet pressure of the liquid supply pump 54 and the second set back pressure value in step S500, it is necessary to make a judgment for each heat exchange component 5 separately.

[0118] For example, suppose there are three heat exchange components 5A, B, and C connected in parallel. For heat exchange component 5A, the inlet pressure of its liquid supply pump 54 is detected and compared with a second set back pressure value; similarly, the same operation is performed for heat exchange components 5B and C.

[0119] If the inlet pressure of the liquid supply pump 54 of heat exchange component 5A is greater than or equal to the second set back pressure value, then the liquid supply pump 54 of heat exchange component 5A will be turned on, allowing the fluid inside the component to circulate normally under the action of the liquid supply pump 54, thereby achieving heat dissipation for the corresponding heat-generating area. For heat exchange components 5B and C, if the inlet pressure of their liquid supply pump 54 does not reach the second set back pressure value, their liquid supply pump 54 will not be turned on.

[0120] Each heat exchange component 5 is controlled individually and relatively independently, without affecting each other. This control method allows for flexible activation or deactivation of the liquid supply pump 54 based on the actual pressure conditions of each heat exchange component 5. For example, if the heat load of the heat source corresponding to a heat exchange component 5 changes, causing a change in the inlet pressure of the liquid supply pump 54, only the state of the liquid supply pump 54 of that component will be affected; other heat exchange components 5 can still operate normally according to their own pressure conditions. This not only effectively avoids cavitation damage to the liquid supply pump 54 due to insufficient inlet pressure but also improves the flexibility and adaptability of the system operation, better responding to dynamic changes in the heat load of different heat-generating areas and ensuring that the entire liquid cooling device can dissipate heat efficiently and stably under various operating conditions.

[0121] In some embodiments, the liquid cooling device control method further includes the following step S900: the liquid supply pump 54 of the heat exchange component 5 is shut down if the following condition is not met, and the second pressure regulating device 55 of the heat exchange component 5 is connected to the second branch 52 to increase the inlet pressure of the liquid supply pump 54 through the second pressure regulating device 55: the inlet pressure of the liquid supply pump 54 of the heat exchange component 5 is greater than or equal to the second set back pressure value.

[0122] In the control method of a liquid cooling device with multiple heat exchange components 5 connected in parallel, step S900 further improves the personalized and flexible control of each heat exchange component 5.

[0123] After determining the inlet pressure of the liquid supply pump 54 of each heat exchange component 5 and the second set back pressure value, for those heat exchange components 5 whose inlet pressure of the liquid supply pump 54 is less than the second set back pressure value, that is, those components that do not meet the condition that the inlet pressure of the liquid supply pump 54 is greater than or equal to the second set back pressure value, a specific operation needs to be performed.

[0124] First, the liquid supply pump 54 of the heat exchange assembly 5 must not be turned on. This is because turning on the liquid supply pump 54 when the inlet pressure is insufficient may cause the pump to operate in an unstable state, increasing the risk of cavitation and even causing pump damage. Simultaneously, the second pressure regulating device 55 of the heat exchange assembly 5 is connected to the second branch 52. The second pressure regulating device 55 is an expansion tank, which, by connecting to the second branch 52, can regulate the pressure of the second branch 52 to increase the inlet pressure of the liquid supply pump 54.

[0125] For example, at a certain moment, one of the multiple parallel heat exchange components 5 experiences a sudden increase in heat load from its heat source, causing a decrease in the inlet pressure of the liquid supply pump 54; or, when initially preparing to start the heat exchange component 5, the inlet pressure of its liquid supply pump 54 is insufficient. In this case, according to step S900, the liquid supply pump 54 of the heat exchange component 5 is shut down or not started, while simultaneously connecting the second pressure regulating device 55 to the second branch 52. The second pressure regulating device 55 will adjust the pressure of the second branch 52 according to its own characteristics, such as the expansion tank absorbing or releasing fluid, or the pressure regulating valve adjusting its opening, thereby gradually increasing the inlet pressure of the liquid supply pump 54.

[0126] The above technical solution ensures that each heat exchange component 5 maintains good operating condition under different working conditions. By shutting down the insufficient pressure supply pump 54 and connecting the second pressure regulating device 55 to regulate the pressure, the risk of equipment damage is effectively avoided, the overall stability and reliability of the liquid cooling device are improved, and the system can better cope with the dynamic changes in the heat load of each heat exchange component 5, ensuring efficient heat dissipation and highly flexible adjustment.

[0127] This invention provides a liquid cooling device control system, including a memory and a processor coupled to the memory. The processor is configured to execute the liquid cooling device control method of any of the foregoing embodiments based on instructions stored in the memory.

[0128] Memory may include, for example, system memory, fixed non-volatile storage media, etc. System memory may store, for example, the operating system, application programs, boot loader, and other programs.

[0129] Some embodiments of this disclosure also provide a computer-readable storage medium having a computer program stored thereon. When executed by a processor, this program implements the liquid cooling device control method of any of the above embodiments.

[0130] The processors described herein may include general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in alternatives, it may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0131] Storage media can be any available medium that can be accessed by a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Any connection is also properly referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then such coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of media. As used herein, disk and disc include compact discs (CDs), laser discs, optical discs, digital multi-purpose discs (DVDs), floppy disks, and Blu-ray discs, where disks typically reproduce data magnetically, and discs reproduce data optically using lasers. Combinations of the above should also be included within the scope of computer-readable media.

[0132] Those skilled in the art will understand that the method embodiments of this disclosure can be provided as a method, system, or computer program product. Therefore, this disclosure can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this disclosure can take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0133] This disclosure is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0134] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0135] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0136] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0137] In the description of this invention, each technical feature may be combined with other technical features where feasible.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A liquid cooling device, characterized in that, include: The first flow path (1) is configured to provide fluid; The second flow path (2) is connected to the first flow path (1) and is configured to receive the fluid flowing out of the heat exchange assembly (5); The first pressure regulating device (3) is installed in the first flow path (1); A back pressure pump (4) is installed in the first flow path (1) and located upstream of the first pressure regulating device (3); and At least one of the heat exchange components (5), each of the heat exchange components (5) includes a first branch (51), a second branch (52), a heat exchanger (53), a liquid supply pump (54), and a second pressure regulating device (55); The second branch (52) is located downstream of the first branch (51), the heat exchanger (53) is arranged between the first branch (51) and the second branch (52) and is connected to both the first branch (51) and the second branch (52); the liquid supply pump (54) is located between the first branch (51) and the heat exchanger (53) and is connected to both; the second pressure regulating device (55) is connected to the first branch (51) and is located upstream of the liquid supply pump (54).

2. The liquid cooling device according to claim 1, characterized in that, Each of the heat exchange components (5) further includes a switching valve (56) installed between the second pressure regulating device (55) and the second branch (52) to control the connection and disconnection between the second pressure regulating device (55) and the second branch (52).

3. The liquid cooling device according to claim 1, characterized in that, The first pressure regulating device (3) includes an expansion tank; and / or, the second pressure regulating device (55) includes an expansion tank.

4. The liquid cooling device according to claim 1, characterized in that, The volume of the first pressure regulating device (3) is greater than the volume of the second pressure regulating device (55).

5. The liquid cooling device according to claim 1, characterized in that, The number of heat exchange components (5) is multiple, and each heat exchange component (5) is arranged in parallel in the first flow path (1).

6. The liquid cooling device according to claim 1, characterized in that, The set back pressure of each of the second pressure regulating devices (55) is the same.

7. The liquid cooling device according to claim 1, characterized in that, Also includes: A pressure sensing element (6) is installed in the second flow path (2) to detect fluid pressure; And / or, A flow monitoring element (7) is installed in the second flow path (2) to detect the return flow rate; And / or, A temperature monitoring element (8) is installed in the second flow path (2) to detect the return liquid temperature.

8. The liquid cooling device according to claim 1, characterized in that, Also includes: User thermal load unit (9) is installed in the second flow path (2) and the first flow path (1).

9. A control method for a liquid cooling device, characterized in that, Includes the following steps: Start the liquid cooling device according to any one of claims 1-8; The second pressure regulating device (55) and the second branch (52) of the liquid cooling device are connected. Determine the magnitude of the fluid pressure in the second flow path (2) and the first set back pressure value; wherein the first set back pressure value is a preset value; If the fluid pressure in the second flow path (2) is greater than or equal to the first set back pressure value, then disconnect the second pressure regulating device (55) and the second branch (52) of the liquid cooling device. Determine the magnitude of the inlet pressure of the liquid supply pump (54) of each heat exchange component (5) and the second set back pressure value; wherein the second set back pressure value is a preset value; If the inlet pressure of the liquid supply pump (54) is greater than or equal to the second set back pressure value, the liquid supply pump (54) is turned on.

10. The control method for a liquid cooling device according to claim 9, characterized in that, If the fluid pressure in the second flow path (2) is less than the first set back pressure value, the back pressure pump (4) is turned on to replenish the fluid in the second flow path (2).

11. The control method for a liquid cooling device according to claim 10, characterized in that, It also includes the following steps: Continue to monitor the fluid pressure of the second flow path (2) after replenishment. If the fluid pressure of the second flow path (2) is greater than or equal to the first set back pressure value, then shut down the back pressure pump (4); otherwise, the back pressure pump (4) continues to replenish the fluid to the second flow path (2).

12. The liquid cooling device control method according to claim 9, characterized in that, After a set time has elapsed between the second pressure regulating device (55) and the second branch (52) of the liquid cooling device, the second pressure regulating device (55) and the second branch (52) of the liquid cooling device are disconnected.

13. The control method for a liquid cooling device according to claim 9, characterized in that, Determine the magnitude of the inlet pressure of the liquid supply pump (54) of each heat exchange component (5) and the second set back pressure value; The liquid supply pump (54) of the heat exchange component (5) is turned on when the inlet pressure of the liquid supply pump (54) of the heat exchange component (5) is greater than or equal to the second set back pressure value.

14. The control method for a liquid cooling device according to claim 13, characterized in that, It also includes the following steps: If the following conditions are not met, the liquid supply pump (54) of the heat exchange assembly (5) is shut off, and the second pressure regulating device (55) of the heat exchange assembly (5) is connected to the second branch (52) to increase the inlet pressure of the liquid supply pump (54) through the second pressure regulating device (55): the inlet pressure of the liquid supply pump (54) of the heat exchange assembly (5) is greater than or equal to the second set back pressure value.

15. A control system for a liquid cooling device, characterized in that, include: Memory; and A processor coupled to the memory, the processor being configured to execute the liquid cooling device control method as described in any one of claims 9-14 based on instructions stored in the memory.

16. A computer-readable storage medium, characterized in that, It stores a computer program that, when executed by a processor, implements the liquid cooling device control method as described in any one of claims 9-14.

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