Liquid refrigeration device, control method thereof and liquid cooling system

Abstract

The embodiment of the invention discloses a liquid refrigeration device, a control method thereof and a liquid cooling system. The liquid refrigeration device comprises a refrigeration liquid pipeline connected to a pipe network of a refrigeration object; the liquid supplementing box is connected with the refrigerating liquid pipeline through a liquid supplementing pipeline; the liquid supplementing box is used for supplementing refrigerating liquid for the refrigerating liquid pipeline in a first liquid supplementing state; the liquid supplementing pipeline is further connected to an external liquid source; the external liquid source is used for supplementing refrigerating liquid for the refrigerating liquid pipeline in a second liquid supplementing state; the first electric valve is located on the liquid supplementing pipeline and used for being opened in the first liquid supplementing state or the second liquid supplementing state so that the liquid supplementing pipeline can communicate with the refrigerating liquid pipeline. The liquid supplementing pump is located on the liquid supplementing pipeline, and the output end of the liquid supplementing pump is connected with the first electric valve; the liquid supplementing pump is used for providing refrigerating liquid provided by an external liquid source or a liquid supplementing box to the refrigerating liquid pipeline through the liquid supplementing pipeline.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of liquid refrigeration technology, and relate to but are not limited to a liquid refrigeration device and a control method thereof and a liquid cooling system. Background Art

[0002] Liquid cooling is a highly efficient cooling technology that uses the high thermal conductivity of liquid to cool electronic devices. Compared with traditional air cooling systems, liquid cooling can provide more efficient cooling effects, especially for scenarios with high heat dissipation requirements such as high-performance computing, data centers, and energy storage systems. The working principle of the liquid cooling system is based on the thermal conductivity of liquid. The core idea is to introduce liquid into the equipment, directly contact the heat source, absorb the heat and take it away.

[0003] The coolant in the liquid cooling system is usually a liquid with good thermal conductivity, that is, a refrigerant, such as water or other special liquids, which enters the device through pipes to form a closed circulation system. The coolant contacts the heat source inside the device, such as the processor, graphics card, etc., and absorbs heat through heat conduction. The high thermal conductivity of the coolant enables it to quickly absorb heat and bring it to other parts of the cooling system.

[0004] The circulation pipeline in the liquid cooling system requires repeated circulation of the refrigerant, but during use, the refrigerant will be lost to a certain extent, so it needs to be replenished regularly. In the related art, the automation level of the refrigerant replenishment method in the system is low, and the replenishment method is single. Summary of the invention

[0005] In view of this, an embodiment of the present application provides a liquid refrigeration device and a control method thereof and a liquid cooling system.

[0006] On the one hand, an embodiment of the present application provides a liquid refrigeration device, comprising: Refrigerant liquid pipeline, connected to the pipeline network of the refrigeration object; A replenishing tank connected to the refrigerant liquid pipeline via a replenishing pipeline; the replenishing tank is used to replenish refrigerant liquid to the refrigerant liquid pipeline in a first replenishing state; The liquid replenishment pipeline is also connected to an external liquid source; the external liquid source is used to replenish the refrigerant liquid to the refrigerant liquid pipeline in the second liquid replenishment state; a first electric valve, located on the liquid replenishing pipeline, and used to be opened in the first liquid replenishing state or the second liquid replenishing state to connect the liquid replenishing pipeline with the refrigerant liquid pipeline; A replenishing pump is located on the replenishing pipeline, and the output end of the replenishing pump is connected to the first electric valve; the replenishing pump is used to provide the refrigerant provided by the external liquid source or the replenishing tank to the refrigerant pipeline through the replenishing pipeline.

[0007] In some embodiments, the fluid infusion pipeline includes: a first branch connected between the fluid infusion tank and an input end of the fluid infusion pump, and a second branch connected between the external liquid source and an input end of the fluid infusion pump; A second electric valve is provided on the first branch; The second branch is provided with a third electric valve; The second electric valve is opened in the first fluid replenishment state and is closed in the second fluid replenishment state; the third electric valve is closed in the first fluid replenishment state and is opened in the second fluid replenishment state.

[0008] In some embodiments, the fluid infusion pipeline further includes: a third branch connected between the output end of the fluid infusion pump and the fluid infusion tank; The third branch is provided with a fourth electric valve; Wherein, in the first fluid replenishment state and the second fluid replenishment state, the fourth electric valve is closed; In a third fluid replenishment state in which the fluid replenishment tank is replenished with fluid by the external fluid source, the fourth electric valve is opened, the first electric valve and the second electric valve are closed, and the third electric valve is opened.

[0009] In some embodiments, the liquid replenishing tank is provided with a liquid level detection device, which is used to send a first indication signal indicating entering the third liquid replenishing state when detecting that the liquid level of the liquid replenishing tank is lower than a first liquid level threshold; And in the third fluid replenishment state, when it is detected that the liquid level of the fluid replenishment tank is higher than or equal to the second liquid level threshold, a second indication signal is issued to indicate stopping the third fluid replenishment state; wherein, when the third fluid replenishment state is stopped, the fourth electric valve is closed.

[0010] In some embodiments, the liquid level detection device is also used to: in response to the liquid pressure of the refrigerant liquid pipeline being lower than a preset first pressure threshold, detect whether the liquid level of the liquid replenishment tank is higher than a third liquid level threshold; if it is higher than or equal to the third liquid level threshold, issue a third indication signal for indicating entering a first liquid replenishment state; if it is lower than the third liquid level threshold, issue a fourth indication signal for indicating entering a second liquid replenishment state.

[0011] In some embodiments, a pressure detection device is provided on the refrigerant liquid pipeline to detect the liquid pressure of the refrigerant liquid pipeline; wherein, when the liquid pressure is lower than or equal to a preset first pressure threshold, the first liquid replenishment state or the second liquid replenishment state is entered; and / or when the liquid pressure is higher than or equal to a preset second pressure threshold, the first liquid replenishment state or the second liquid replenishment state is stopped, and the normal refrigeration state is entered.

[0012] In some embodiments, after switching into the first fluid replenishment state or the second fluid replenishment state, the fluid replenishment pump is turned on, and the first electric valve is opened after being turned on for a preset time.

[0013] In some embodiments, the liquid replenishing tank further includes: a fifth electric valve connected to a liquid discharge branch of the liquid replenishing tank; the fifth electric valve is opened to discharge the refrigerant in the liquid replenishing tank.

[0014] In some embodiments, a circulation pump is provided on the refrigerant liquid pipeline for controlling the refrigerant liquid circulation in the refrigerant liquid pipeline and the pipeline network of the refrigeration object.

[0015] In some embodiments, it also includes: Cold source pipelines and heat exchange components; The cold source pipeline and the refrigerant liquid pipeline are both connected to the heat exchange component; the cold source pipeline and the refrigerant liquid pipeline transfer heat in the heat exchange component.

[0016] On the other hand, an embodiment of the present application further provides a control method for a liquid refrigeration device, the method comprising: According to the pressure state of the refrigerant liquid pipeline in the liquid refrigeration device and the liquid level state of the liquid replenishing tank, instructing the liquid refrigeration device to enter a first liquid replenishing state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using the liquid replenishing tank, or to enter a second liquid replenishing state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using an external liquid source; In response to the liquid refrigeration device being in the first liquid replenishment state or the second liquid replenishment state, the first electric valve and the liquid replenishment pump are opened to provide the refrigerant liquid provided by the external liquid source or the liquid replenishment tank to the refrigerant liquid pipeline through the liquid replenishment pipeline.

[0017] In some embodiments, the method further comprises: In response to the liquid refrigeration device being in the first liquid replenishing state, opening a second electric valve between the liquid replenishing tank and the liquid replenishing pump, and closing a third electric valve between the external liquid source and the liquid replenishing pump; or In response to the liquid refrigeration device being in the second liquid replenishing state, the third electric valve is opened and the second electric valve is closed.

[0018] In some embodiments, the method further comprises: In response to the liquid level of the liquid replenishing tank being lower than a preset first liquid level threshold, instructing the liquid refrigeration device to enter a third liquid replenishing state; In response to entering the third liquid replenishment state, opening a fourth electric valve between the output end of the liquid replenishment pump and the liquid replenishment tank, closing the first electric valve and the second electric valve, and opening the third electric valve, so that the external liquid source replenishes the refrigerant liquid for the liquid replenishment tank; In response to the liquid level of the liquid replenishing tank being higher than or equal to a second liquid level threshold, an instruction is given to close the fourth electric valve to stop the third liquid replenishing state.

[0019] In some embodiments, the step of instructing the liquid refrigeration device to enter a first liquid replenishment state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using the liquid replenishment tank, or to enter a second liquid replenishment state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using an external liquid source, according to the pressure state of the refrigerant liquid pipeline in the liquid refrigeration device and the liquid level state of the liquid replenishment tank, comprises: In response to the liquid pressure of the refrigerant liquid pipeline being in a state of waiting for liquid replenishment, detecting a liquid level state of the liquid replenishment tank; If the liquid level of the liquid replenishing tank is higher than or equal to a third liquid level threshold, the liquid refrigeration device is instructed to enter the first liquid replenishing state; If the liquid level of the liquid replenishing tank is lower than the third liquid level threshold, the liquid refrigeration device is instructed to enter the second liquid replenishing state.

[0020] In some embodiments, in response to the liquid pressure of the refrigerant liquid pipeline being in a state of waiting for liquid replenishment, detecting the liquid level state of the liquid replenishment tank includes: Detecting the liquid pressure of the refrigerant liquid pipeline, and if the liquid pressure is lower than or equal to a preset first pressure threshold, detecting the liquid level state of the liquid replenishing tank; The method further comprises: If the liquid pressure is higher than or equal to a preset second pressure threshold, the first liquid replenishing state or the second liquid replenishing state is stopped, and the normal refrigeration state is entered.

[0021] In some embodiments, in response to the liquid refrigeration device being in the first liquid replenishing state or the second liquid replenishing state, opening the first electric valve and the liquid replenishing pump so that the refrigerant provided by the external liquid source or the liquid replenishing tank is provided to the refrigerant liquid pipeline through the liquid replenishing pipeline includes: In response to the liquid refrigeration device being in the first liquid replenishing state or the second liquid replenishing state, starting the liquid replenishing pump; The first electric valve is opened after being opened for a preset time.

[0022] In yet another aspect, an embodiment of the present application further provides a liquid cooling system, comprising: a pipe network for cooling a refrigeration object; As any of the above-mentioned liquid refrigeration devices; wherein the refrigerant liquid pipeline of the liquid refrigeration device is connected to the pipe network; A cold source is connected to a cold source pipeline of the liquid refrigeration device.

[0023] The liquid refrigeration device provided in the embodiment of the present application, through the control of the first electric valve and the refilling pump, uses a refilling tank or an external liquid source to automatically refill the refrigerant liquid pipeline in the first or second refilling state, provides different refilling methods, and has a higher degree of automation, which can be applied to various scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a liquid cooling device provided in an embodiment of the present application Figure 1 ; Figure 2 A schematic diagram of a liquid cooling device provided in an embodiment of the present application Figure 2 ; Figure 3 A schematic diagram of a liquid cooling device provided in an embodiment of the present application Figure 3 ; Figure 4 A schematic diagram of a liquid cooling device provided in an embodiment of the present application Figure 4 ; Figure 5 A schematic diagram of a liquid cooling device provided in an embodiment of the present application Figure 5 ; Figure 6 A control method for a liquid refrigeration device provided in an embodiment of the present application Figure 1 ; Figure 7 A control method for a liquid refrigeration device provided in an embodiment of the present application Figure 2 ; Figure 8 A structural block diagram of a liquid cooling system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in a variety of different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of realizing the description of specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items. In the present application embodiment, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the feature defined as "first", "second", "third", "fourth" can explicitly or implicitly include one or more of the features.

[0027] like Figure 1 As shown, the embodiment of the present application provides a liquid refrigeration device 100, comprising: A refrigerant liquid pipeline 110 connected to a pipe network 210 of a refrigeration object 200; A liquid replenishing tank 120 connected to the refrigerant liquid pipeline 110 via a liquid replenishing pipeline 130; the liquid replenishing tank 120 is used to replenish the refrigerant liquid to the refrigerant liquid pipeline 110 in a first liquid replenishing state; The liquid replenishing pipeline 130 is also connected to an external liquid source 140; the external liquid source 140 is used to replenish the refrigerant liquid to the refrigerant liquid pipeline 110 in the second liquid replenishing state; A first electric valve 150 is located on the liquid replenishing pipeline 130 and is used to be opened in the first liquid replenishing state or the second liquid replenishing state to connect the liquid replenishing pipeline 130 with the refrigerant liquid pipeline 110; The replenishment pump 160 is located on the replenishment pipeline 130 , and the output end of the replenishment pump 160 is connected to the first electric valve 150 ; the replenishment pump 160 is used to provide the refrigerant provided by the external liquid source 140 or the replenishment tank 120 to the refrigerant liquid pipeline 110 through the replenishment pipeline 130 .

[0028] The application range of the liquid cooling system is very wide. The above-mentioned liquid cooling device 100 provided in the embodiment of the present application can be one of the core devices in the liquid cooling system for cooling the cooling object 200. Specifically, the cooling object 200 can be a data center, energy storage system, high performance computing (HPC) and supercomputer, artificial intelligence (AI) and machine learning (ML) equipment, financial and transaction servers, medical and scientific research computing equipment, new energy power stations and microgrids, and new energy vehicles. Large or small and medium-sized equipment and equipment groups in various scenarios. A pipe network 210 for refrigeration can be provided inside the cooling object 200. The pipe network can be distributed inside or near the heat-generating components of the cooling object 200, so as to facilitate the removal of heat generated by the heat-generating components through the refrigerant in the pipe network 210, thereby achieving refrigeration.

[0029] In the embodiment of the present application, the refrigerant liquid pipeline 110 of the liquid refrigeration device 100 is connected to the pipe network 210 inside the refrigeration object 200, so that the internal refrigerant forms a circulation loop. Due to the loss of liquid in the circulation loop, liquid replenishment is required in some cases. Therefore, the liquid refrigeration device provided in the embodiment of the present application can realize liquid replenishment of the above-mentioned refrigerant liquid pipeline, and then realize liquid replenishment of the entire circulation loop.

[0030] Here, the liquid refrigeration device 100 can automatically replenish the refrigerant liquid pipeline 110 in the first replenishment state or the second replenishment state. The first replenishment state is to replenish the refrigerant liquid pipeline 110 with the refrigerant liquid stored in the replenishment tank 120. The second replenishment state is to replenish the refrigerant liquid pipeline 110 with the external liquid source 140. When the liquid refrigeration device 100 is switched to the first replenishment state or the second replenishment state, the replenishment pump 160 and the first electric valve 150 are opened in sequence, so that the refrigerant to be replenished is transferred to the refrigerant liquid pipeline 110 through the replenishment pipeline 130.

[0031] It should be noted that, in the embodiment of the present application, the first liquid replenishment state or the second liquid replenishment state can be determined whether to switch according to the state of the refrigerant liquid pipeline 110 and the state of the liquid replenishment tank 120 or the external liquid source 140. For example, when the refrigerant liquid pipeline 110 indicates that liquid replenishment is required based on the liquid volume or liquid pressure or other indication information, it is determined whether the state of the liquid replenishment tank 120 or the external liquid source 140 is a state in which liquid replenishment can be performed. If the state of the liquid replenishment tank 120 is capable of liquid replenishment, it is switched to the first liquid replenishment state. If the state of the external liquid source 140 is capable of liquid replenishment, it can be switched to the second liquid replenishment state.

[0032] It should be noted that the first electric valve 150 and the fluid replenishment pump 160 can be automatically opened after switching to the first fluid replenishment state or the second fluid replenishment state, or can be switched to the manual state and opened by manual control. If in the manual state, no matter whether it is in the first fluid replenishment state or the second fluid replenishment state, the first electric valve 150 and the fluid replenishment pump 160 need to be manually opened before fluid replenishment can be performed.

[0033] In some embodiments, after switching into the first fluid replenishment state or the second fluid replenishment state, the fluid replenishment pump 160 is turned on, and after being turned on for a preset time, the first electric valve 150 is opened.

[0034] In this way, the replenishing pump 160 is first turned on to ensure sufficient pressure on the replenishing pipeline 130, and then the first electric valve 150 is turned on to achieve replenishing. In this way, the liquid on the refrigerant pipeline 110 can be prevented from flowing back after the first electric valve 150 is opened, thereby improving the efficiency of replenishing.

[0035] By utilizing the liquid refrigeration device provided by the embodiment of the present application, through the control of the first electric valve 150 and the replenishing pump 160, the replenishing tank 120 or the external liquid source 140 is used to automatically replenish the refrigerant liquid pipeline 110 in the first or second replenishing state, providing different replenishing methods with a higher degree of automation, and can be applied to various scenarios.

[0036] In some embodiments, Figure 2 As shown, the infusion pipeline 130 includes: a first branch connected between the infusion tank 120 and the input end of the infusion pump 160, and a second branch connected between the external liquid source 140 and the input end of the infusion pump 160; The first branch is provided with a second electric valve 201; The second branch is provided with a third electric valve 202; The second electric valve 201 is opened in the first fluid replenishment state, and is closed in the second fluid replenishment state; the third electric valve 202 is closed in the first fluid replenishment state, and is opened in the second fluid replenishment state.

[0037] The second electric valve 201 can connect the liquid replenishing tank 120 to the refrigerant liquid pipeline 110 through the liquid replenishing pipeline 130 in the first liquid replenishing state, so that the refrigerant stored in the liquid replenishing tank 120 is replenished into the refrigerant liquid pipeline 110 through the liquid replenishing pump 160 .

[0038] The third electric valve 202 can connect the external liquid source 140 to the refrigerant liquid pipeline 110 through the refrigerant liquid pipeline 130 in the second refrigerant state, so that the refrigerant provided by the external liquid source 140 is replenished into the refrigerant liquid pipeline 110 through the refrigerant liquid pump 160 .

[0039] It is understandable that, during the fluid replenishment, only one of the second electric valve 201 and the third electric valve 202 is in an open state, and the other is in a closed state. Therefore, the second electric valve 201 and the third electric valve 202 can be controlled synchronously.

[0040] In some embodiments, Figure 3 As shown, the infusion pipeline 130 also includes: a third branch connected between the output end of the infusion pump 160 and the infusion tank 120; The third branch is provided with a fourth electric valve 301; Wherein, in the first fluid replenishment state and the second fluid replenishment state, the fourth electric valve 301 is closed; In the third fluid replenishment state in which the fluid replenishment tank 120 is replenished with fluid by the external fluid source 140 , the fourth electric valve 301 is opened, the first electric valve 150 and the second electric valve 201 are closed, and the third electric valve 202 is opened.

[0041] That is to say, the liquid refrigeration device 100 can also automatically use the external liquid source 140 to replenish the internal liquid replenishing tank 120 with liquid.

[0042] It is understandable that, in order to save resources or facilitate control, when the refrigerant liquid pipeline 110 needs to be replenished, the replenishment tank 120 can be preferentially selected for replenishment. However, the capacity of the replenishment tank 120 is limited. When the capacity of the replenishment tank 120 is insufficient for replenishment, it is necessary to replenish the replenishment tank 120. At this time, the liquid refrigeration device 100 can be switched to the third replenishment state.

[0043] It should be noted that the third liquid replenishment state can be a state that is entered without the need to replenish the refrigerant liquid pipeline 110. If the refrigerant stored in the liquid replenishment tank 120 is insufficient and the refrigerant liquid pipeline 110 needs to be replenished, the second liquid replenishment state can be switched to replenish the refrigerant liquid pipeline 110 using the external liquid source 140, and after the replenishment is completed, the third liquid replenishment state can be switched to continue replenishing the liquid replenishment tank 120 using the external liquid source 140.

[0044] The third branch is connected between the output end of the liquid replenishing pump 160 and the liquid inlet of the liquid replenishing tank 120. Thus, when the fourth electric valve 301 on the third branch is opened, the liquid on the liquid replenishing pipeline 130 is transferred to the liquid replenishing tank 120 through the liquid replenishing pump 160. At this time, in order to prevent the liquid from being transferred to the refrigerant liquid pipeline 110 and to prevent the liquid replenishing tank 120 from leaking, the first electric valve 150 and the second electric valve 201 need to be closed. The third branch for providing the external liquid source 140 is opened, that is, the third electric valve 202 is opened.

[0045] In some embodiments, Figure 4 As shown, the liquid replenishing tank 120 is provided with a liquid level detection device 121, which is used to send a first indication signal indicating entering the third liquid replenishing state when detecting that the liquid level of the liquid replenishing tank 120 is lower than the first liquid level threshold; And in the third fluid replenishment state, when it is detected that the liquid level of the fluid replenishment tank 120 is higher than or equal to the second liquid level threshold, a second indication signal is issued to indicate stopping the third fluid replenishment state; wherein, when stopping the third fluid replenishment state, the fourth electric valve 301 is closed.

[0046] The above-mentioned liquid level detection device 121 can be composed of sensors such as light sensing, liquid sensing, temperature sensing or image detection. Exemplarily, the liquid level detection device 121 can include two sensors, including a first sensor a, which is arranged at the position where the first liquid level threshold of the liquid replenishing tank 120 is located; and a second sensor b, which is arranged at the position where the second liquid level threshold of the liquid replenishing tank 120 is located. When the first sensor a detects liquid, it means that the liquid in the current liquid replenishing tank 120 does not need to be replenished; when the second sensor b detects liquid, it means that the liquid in the current liquid replenishing tank 120 is sufficient, and if it is in the third liquid replenishing state, it is necessary to stop the third liquid replenishing state; when the first sensor a does not detect liquid, it means that the liquid in the current liquid replenishing tank 120 is insufficient, and it is necessary to switch to the third liquid replenishing state for liquid replenishment.

[0047] The liquid level detection device 121 may include a signal sending unit capable of sending an indication signal. When the liquid level detection device 121 detects different states of the liquid level, it may send a corresponding indication signal, including the above-mentioned first indication signal or the second indication signal, etc. In one embodiment, these indication signals may be used to send to the above-mentioned first to fourth electric valves and the infusion pump and other devices, so that the first to fourth electric valves and the infusion pump switch their open or closed states based on different indication signals. In another embodiment, the above-mentioned indication signal may also be sent to a master control device, which may be used to provide control signals for the above-mentioned first to fourth electric valves and the infusion pump, etc. Therefore, when the master control device receives the above-mentioned first indication signal or the second indication signal, etc., it may make corresponding processing to indicate the open and closed states of each electric valve and the infusion pump.

[0048] In some embodiments, the liquid replenishing tank 120 further includes: a fifth electric valve 302 connected to a liquid discharge branch of the liquid replenishing tank 120 ; the fifth electric valve 302 is opened to discharge the refrigerant in the liquid replenishing tank 120 .

[0049] In this way, when the replenishing tank 120 needs to be repaired, the refrigerant needs to be replaced, or an excessive amount of refrigerant is stored in the replenishing tank 120, the excess refrigerant can be discharged through the drain branch. The fifth electric valve 302 can be controlled individually or in conjunction with other electric valves. For example, in the first replenishing state, the second replenishing state, and the third replenishing state, the fifth electric valve 302 maintains a closed state. In the normal refrigeration state or other states (such as the maintenance state or the standby state), the fifth electric valve 302 is in an openable state. In the openable state, the fifth electric valve 302 can be opened by a control signal provided by the master control device, or it can be opened manually.

[0050] In some embodiments, the liquid level detection device 121 is also used to: in response to the liquid pressure of the refrigerant liquid pipeline 110 being lower than a preset first pressure threshold, detect whether the liquid level of the liquid replenishment tank 120 is higher than a third liquid level threshold; if it is higher than or equal to the third liquid level threshold, send a third indication signal for indicating entering a first liquid replenishment state; if it is lower than the third liquid level threshold, send a fourth indication signal for indicating entering a second liquid replenishment state.

[0051] That is, whether to enter the first liquid replenishment state or the second liquid replenishment state can be determined according to the liquid pressure of the refrigerant liquid pipeline 110. When the liquid pressure is too low, liquid replenishment is required. At this time, it can be indicated to enter the first liquid replenishment state or the second liquid replenishment state.

[0052] In the above embodiment, it is possible to preferentially detect whether the state of the fluid replenishment tank 120 can be used for fluid replenishment, and use the above-mentioned liquid level detection device 121 of the fluid replenishment tank 120 to determine whether the fluid replenishment tank meets the fluid replenishment conditions. Exemplarily, the liquid level detection device 121 may also include a third sensor, which is arranged at the position of the above-mentioned third liquid level threshold. Specifically, the above-mentioned third liquid level threshold may be greater than or equal to the above-mentioned first liquid level threshold. If the third liquid level threshold is equal to the first liquid level threshold, the above-mentioned third sensor may not be required, and the liquid level information detected by the first sensor may be used for confirmation. Specifically, when the first sensor (third sensor) detects liquid, it means that the fluid replenishment tank 120 can be replenished, and at this time it can be switched to the first fluid replenishment state.

[0053] In other embodiments, when the refrigerant liquid pipeline 110 needs to be replenished, it is also possible to preferentially detect whether the external liquid source 140 is in a state where liquid can be replenished, for example, by determining whether the external liquid source 140 is connected or whether the external liquid source 140 is turned on, so as to determine whether it can be used for liquid replenishment. If liquid replenishment is possible, the second liquid replenishment state is entered. If the external liquid source 140 cannot be used for liquid replenishment, the liquid level state of the liquid replenishment tank 120 can be continuously detected to determine whether to enter the first liquid replenishment state.

[0054] The third indication signal and the fourth indication signal may also be issued by the liquid level detection device to indicate the opening and closing states of each electric valve and the liquid replenishing pump.

[0055] In some embodiments, Figure 5 As shown, a pressure detection device 111 is provided on the refrigerant liquid pipeline 110, which is used to detect the liquid pressure of the refrigerant liquid pipeline 110; wherein, when the liquid pressure is lower than or equal to a preset first pressure threshold, the first liquid replenishment state or the second liquid replenishment state is entered; and / or when the liquid pressure is higher than or equal to a preset second pressure threshold, the first liquid replenishment state or the second liquid replenishment state is stopped, and the normal refrigeration state is entered.

[0056] Here, the second pressure threshold is greater than the first pressure threshold. When the pressure of the refrigerant liquid pipeline 110 is between the first pressure threshold and the second pressure threshold, the refrigerant liquid pipeline 110 can be in a normal refrigeration state without the need for liquid replenishment.

[0057] When the liquid pressure drops below the first pressure threshold, fluid replenishment is required. At this time, the pressure detection device 111 may send an indication signal to the liquid level detection device 121 on the fluid replenishment tank 120 to indicate that it is currently necessary to switch to the fluid replenishment state, and then the liquid level detection device 121 detects the liquid level and sends the above-mentioned third indication signal or fourth indication signal. Alternatively, the pressure detection device 111 may send an indication signal to the master control device to indicate that it is necessary to switch to the fluid replenishment state, and then the master control device may obtain the third or fourth indication signal of the liquid level detection device 121 to obtain the liquid level state information, thereby entering the first or second fluid replenishment state and controlling the opening and closing of each electric valve and the fluid replenishment pump.

[0058] During the liquid replenishment process, the pressure detection device 111 can continuously detect the liquid pressure. When the liquid pressure is greater than or equal to the second pressure threshold, it means that sufficient liquid replenishment has been performed and the liquid replenishment needs to be stopped. Therefore, at this time, the pressure detection device 111 can send a corresponding indication signal to stop the liquid replenishment, thereby facilitating the control of closing each electric valve and the liquid replenishment pump, and disconnecting the connection between the liquid replenishment pipeline 130 and the refrigerant liquid pipeline 110.

[0059] In some embodiments, as described above Figure 5 As shown, a circulation pump 112 is provided on the refrigerant liquid pipeline 110 for controlling the refrigerant liquid circulation in the refrigerant liquid pipeline 110 and the pipe network 210 of the refrigeration object 200 .

[0060] When the liquid refrigeration device 100 is in a normal refrigeration working state, the liquid replenishing pipeline 130 is not connected. Therefore, the refrigerant is stored in the refrigerant pipeline 110 and the pipeline network 210, and circulated through the circulating pump 112, so that the refrigerant with a higher temperature in the pipeline network 210 is transferred out, taking away the heat in the refrigeration object 200, and then the refrigerant with a lower temperature after cooling is transferred back to the pipeline network 210.

[0061] In some embodiments, Figure 5 As shown, the liquid refrigeration device 100 further includes: Cold source pipeline 170 and heat exchange component 180; The cold source pipeline 170 and the refrigerant liquid pipeline 110 are both connected to the heat exchange component 180 ; the cold source pipeline 170 and the refrigerant liquid pipeline 110 transfer heat in the heat exchange component 180 .

[0062] The cold source pipeline 170 can be used to transmit a cold source, such as a low-temperature liquid or gas provided by a refrigeration device, and transmit it to the heat exchange component 180. The heat exchange component 180 cools down the refrigerant in the refrigerant pipeline 110 through the cold source, so that the refrigerant passing through the heat exchange component 180 recovers the refrigeration effect and is further provided to the pipe network 210.

[0063] Based on the same inventive concept, the present application also provides a control method for a liquid refrigeration device, such as Figure 6 As shown, the method includes: Step S101, according to the pressure state of the refrigerant liquid pipeline in the liquid refrigeration device and the liquid level state of the liquid replenishing tank, instructing the liquid refrigeration device to enter a first liquid replenishing state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using the liquid replenishing tank, or to enter a second liquid replenishing state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using an external liquid source; Step S102, in response to the liquid refrigeration device being in the first liquid replenishing state or the second liquid replenishing state, opening the first electric valve and the liquid replenishing pump, so that the refrigerant provided by the external liquid source or the liquid replenishing tank is provided to the refrigerant liquid pipeline through the liquid replenishing pipeline.

[0064] In some embodiments, the method further comprises: In response to the liquid refrigeration device being in the first liquid replenishing state, opening a second electric valve between the liquid replenishing tank and the liquid replenishing pump, and closing a third electric valve between the external liquid source and the liquid replenishing pump; or In response to the liquid refrigeration device being in the second liquid replenishing state, the third electric valve is opened and the second electric valve is closed.

[0065] In some embodiments, the method further comprises: In response to the liquid level of the liquid replenishing tank being lower than a preset first liquid level threshold, instructing the liquid refrigeration device to enter a third liquid replenishing state; In response to entering the third liquid replenishment state, opening a fourth electric valve between the output end of the liquid replenishment pump and the liquid replenishment tank, closing the first electric valve and the second electric valve, and opening the third electric valve, so that the external liquid source replenishes the refrigerant liquid for the liquid replenishment tank; In response to the liquid level of the liquid replenishing tank being higher than or equal to a second liquid level threshold, an instruction is given to close the fourth electric valve to stop the third liquid replenishing state.

[0066] In some embodiments, the step of instructing the liquid refrigeration device to enter a first liquid replenishment state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using the liquid replenishment tank, or to enter a second liquid replenishment state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using an external liquid source, according to the pressure state of the refrigerant liquid pipeline in the liquid refrigeration device and the liquid level state of the liquid replenishment tank, comprises: In response to the liquid pressure of the refrigerant liquid pipeline being in a state of waiting for liquid replenishment, detecting a liquid level state of the liquid replenishment tank; If the liquid level of the liquid replenishing tank is higher than or equal to a third liquid level threshold, the liquid refrigeration device is instructed to enter the first liquid replenishing state; If the liquid level of the liquid replenishing tank is lower than the third liquid level threshold, the liquid refrigeration device is instructed to enter the second liquid replenishing state.

[0067] In some embodiments, in response to the liquid pressure of the refrigerant liquid pipeline being in a state of waiting for liquid replenishment, detecting the liquid level state of the liquid replenishment tank includes: Detecting the liquid pressure of the refrigerant liquid pipeline, and if the liquid pressure is lower than or equal to a preset first pressure threshold, detecting the liquid level state of the liquid replenishing tank; The method further comprises: If the liquid pressure is higher than or equal to a preset second pressure threshold, the first liquid replenishing state or the second liquid replenishing state is stopped, and the normal refrigeration state is entered.

[0068] In some embodiments, in response to the liquid refrigeration device being in the first liquid replenishing state or the second liquid replenishing state, opening the first electric valve and the liquid replenishing pump so that the refrigerant provided by the external liquid source or the liquid replenishing tank is provided to the refrigerant liquid pipeline through the liquid replenishing pipeline includes: In response to the liquid refrigeration device being in the first liquid replenishing state or the second liquid replenishing state, starting the liquid replenishing pump; The first electric valve is opened after being opened for a preset time.

[0069] The above method has the same inventive concept as the liquid refrigeration device. The control method can be applied to the control system of the liquid refrigeration device itself (including the linked electric valves, liquid replenishment pumps, sensors, etc.) and can also be applied to an external master control device. The specific implementation of the method can refer to the introduction in the various embodiments of the liquid refrigeration device, which will not be repeated here.

[0070] In addition, the present disclosure provides a specific example of a control method for a liquid refrigeration device: like Figure 7 As shown, the method includes: Step S201: Determine that the current control mode of the liquid refrigeration device is the automatic mode, and the liquid refrigeration device is in a normal refrigeration state, wherein the control mode includes: the automatic mode and the manual mode; Step S202, detecting whether the liquid pressure of the refrigerant liquid pipeline is lower than the first pressure threshold, if so, proceeding to the next step; if not, maintaining the normal refrigeration state and continuously detecting the liquid pressure; Step S203, detecting whether the liquid level in the liquid replenishing tank is lower than the first preset threshold; if so, proceeding to step S208; if not, switching to the first liquid replenishing state and proceeding to the next step; Step S204, determine whether the first electric valve is in a closed state; if so, proceed to step S206, if not, proceed to step S205; Step S205, closing the first electric valve; Step S206, starting the fluid infusion pump, and opening the first electric valve after the fluid infusion pump is started for a preset time; Step S207, detecting whether the liquid pressure of the refrigerant liquid pipeline is greater than or equal to the second pressure threshold, if so, proceeding to step S209, if not, maintaining the current liquid replenishing state and continuing to replenish liquid, and continuing to detect the liquid pressure; Step S208, detecting whether the external liquid source meets the liquid replenishment condition, if so, switching to the second liquid replenishment state and entering step S204; if not, entering step S209; Step S209, stop the fluid replenishment, and close the first electric valve and the fluid replenishment pump.

[0071] In a specific embodiment: Combined with the switches of the relevant manual valve and the refilling electric valve (which can be the above-mentioned first electric valve), the refilling pump has three refilling modes: refilling the system through the refilling tank, refilling the system through an external water source, and refilling the refilling tank through an external liquid source (such as an external water tank).

[0072] Therefore, during the operation of the equipment, the user can select the operating mode of the rehydration pump in advance, and the machine will make corresponding condition judgments based on the mode (when the rehydration pump is in automatic state, the machine will automatically switch the rehydration mode to "rehydrating the system through the rehydration tank" to prevent human error or forgetting to select the rehydration mode in automatic state).

[0073] The following are the three rehydration modes mentioned above: 1. Refill the system with fluid through the refill tank In this mode, no matter the replenishment pump is in manual or automatic mode, the replenishment tank liquid level must be higher than the minimum liquid level before the replenishment pump can operate. When the replenishment pump is in manual mode, the replenishment pump can be started and stopped manually according to demand. When the return liquid pressure is higher than the replenishment stop pressure or the water tank liquid level is lower than the low liquid level during the replenishment process, the replenishment pump will stop running; when the replenishment pump is in automatic mode, the machine will automatically start and stop according to the pre-set replenishment pump start pressure and stop pressure: when the return liquid pressure is lower than the start pressure and the replenishment tank water level is higher than the low liquid level, the replenishment pump is put into use; when the return liquid pressure is higher than the stop pressure or the water tank liquid level is lower than the low liquid level during the replenishment process, the replenishment pump will stop using.

[0074] 2. Refill the system with fluid from an external fluid source In this mode, the linkage control of the fluid replenishment pump and the fluid replenishment electric valve can be found in the following "Linkage control logic of the fluid replenishment pump and the fluid replenishment electric valve". The control method is similar to the first mode mentioned above, but the external liquid source provides the fluid replenishment.

[0075] 3. Refill the refill tank with fluid from an external fluid source In this mode, you can use manual mode or automatic mode.

[0076] In manual mode: when the refill pump is in manual mode and the refill electric valve (such as the first electric valve in the above embodiment) is closed, the refill pump is manually opened, the third electric valve and the fourth electric valve are opened (the second electric valve is closed), and then the refill pump can be used to replenish the cooling medium from the external water tank or other external liquid source into the refill tank. During the refill process, the liquid level can be manually controlled by paying attention to the liquid level in the sight glass of the refill tank. When the liquid level is reached, the operation of the refill pump is manually stopped, or when the high liquid level switch triggers an alarm, the refill pump is manually stopped and the refill electric valve is closed to stop the refill.

[0077] The refill pump is in automatic state. After the low liquid level switch alarms (lower than the first liquid level threshold), the automatic refill is triggered. The refill pump, the third electric valve, and the fourth electric valve are automatically opened, and the first electric valve and the second electric valve are closed. After that, the refill tank is filled with liquid through an external water tank or other external liquid source. When the high liquid level switch triggers an alarm, the refill pump and each electric valve are automatically closed, and the refill stops. 2. Joint control logic of the refill pump and the refill electric valve The manual or automatic state of the replenishment electric valve is consistent with the manual or automatic state of the replenishment pump, that is, when the replenishment pump is manual, the replenishment electric valve will also be in the manual state; when the replenishment pump is in the automatic state, the replenishment electric valve will also be in the automatic state.

[0078] Regardless of whether the rehydration pump is in manual or automatic state, when the rehydration pump is rehydrating the system, the rehydration electric valve will be opened after the rehydration pump has been turned on for a certain period of time, and the opening of the rehydration electric valve after this time will be one of the necessary conditions for the operation of the rehydration pump; and after the rehydration pump stops running after finishing rehydrating the system, regardless of whether the rehydration electric valve is in manual or automatic state, the rehydration electric valve will be forced to close.

[0079] Based on the same inventive concept, the present application also provides a liquid cooling system, such as Figure 8 As shown, the liquid cooling system 300 includes: A pipe network 210 for cooling a refrigeration object 200; As any of the above-mentioned liquid refrigeration devices 100; wherein the refrigerant liquid pipeline 110 of the liquid refrigeration device 100 is connected to the pipe network 210; The cold source 230 is connected to the cold source pipeline 170 of the liquid refrigeration device 100 .

[0080] The above-mentioned liquid cooling system and the liquid cooling device have the same inventive concept. The specific implementation method of the liquid cooling system can refer to the introduction in the various embodiments of the liquid cooling device, which will not be repeated here.

[0081] It should be understood that "some embodiments", "one embodiment" or "an embodiment" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The above-mentioned sequence numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments.

[0082] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0083] The above is only an implementation method of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A liquid refrigeration device, characterized in that: include: Refrigerant liquid pipeline, connected to the pipeline network of the refrigeration object; A replenishing tank connected to the refrigerant liquid pipeline via a replenishing pipeline; the replenishing tank is used to replenish refrigerant liquid to the refrigerant liquid pipeline in a first replenishing state; The liquid replenishment pipeline is also connected to an external liquid source; the external liquid source is used to replenish the refrigerant liquid to the refrigerant liquid pipeline in the second liquid replenishment state; a first electric valve, located on the liquid replenishing pipeline, and used to be opened in the first liquid replenishing state or the second liquid replenishing state to connect the liquid replenishing pipeline with the refrigerant liquid pipeline; A replenishing pump is located on the replenishing pipeline, and the output end of the replenishing pump is connected to the first electric valve; the replenishing pump is used to provide the refrigerant provided by the external liquid source or the replenishing tank to the refrigerant pipeline through the replenishing pipeline.

2. The liquid refrigeration device according to claim 1, characterized in that: The infusion pipeline includes: a first branch connected between the infusion tank and the input end of the infusion pump, and a second branch connected between the external liquid source and the input end of the infusion pump; A second electric valve is provided on the first branch; A third electric valve is provided on the second branch; Wherein, the second electric valve is opened in the first fluid replenishment state, and is closed in the second fluid replenishment state; the third electric valve is closed in the first fluid replenishment state, and is opened in the second fluid replenishment state; The fluid replenishment pipeline also includes: a third branch connected between the output end of the fluid replenishment pump and the fluid replenishment tank; The third branch is provided with a fourth electric valve; Wherein, in the first fluid replenishment state and the second fluid replenishment state, the fourth electric valve is closed; In a third fluid replenishment state in which the fluid replenishment tank is replenished with fluid by the external fluid source, the fourth electric valve is opened, the first electric valve and the second electric valve are closed, and the third electric valve is opened.

3. The liquid refrigeration device according to claim 2, characterized in that: The liquid replenishing tank is provided with a liquid level detection device, which is used to send a first indication signal indicating entering the third liquid replenishing state when detecting that the liquid level of the liquid replenishing tank is lower than a first liquid level threshold; And in the third liquid replenishment state, when it is detected that the liquid level of the liquid replenishment tank is higher than or equal to the second liquid level threshold, a second indication signal indicating to stop the third liquid replenishment state is issued; wherein, when the third liquid replenishment state is stopped, the fourth electric valve is closed; The liquid level detection device is also used to: in response to the liquid pressure of the refrigerant liquid pipeline being lower than a preset first pressure threshold, detect whether the liquid level of the liquid replenishment tank is higher than a third liquid level threshold; if it is higher than or equal to the third liquid level threshold, send a third indication signal for indicating entering a first liquid replenishment state; if it is lower than the third liquid level threshold, send a fourth indication signal for indicating entering a second liquid replenishment state.

4. The liquid refrigeration device according to any one of claims 1 to 3, characterized in that: A pressure detection device is provided on the refrigerant liquid pipeline, which is used to detect the liquid pressure of the refrigerant liquid pipeline; when the liquid pressure is lower than or equal to a preset first pressure threshold, the first liquid replenishment state or the second liquid replenishment state is entered; and / or when the liquid pressure is higher than or equal to a preset second pressure threshold, the first liquid replenishment state or the second liquid replenishment state is stopped, and the normal refrigeration state is entered.

5. The liquid refrigeration device according to any one of claims 1 to 3, characterized in that: After switching into the first fluid replenishment state or the second fluid replenishment state, the fluid replenishment pump is turned on, and the first electric valve is opened after being turned on for a preset time.

6. A control method for a liquid refrigeration device, characterized in that: The method comprises: According to the pressure state of the refrigerant liquid pipeline in the liquid refrigeration device and the liquid level state of the liquid replenishing tank, instructing the liquid refrigeration device to enter a first liquid replenishing state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using the liquid replenishing tank, or to enter a second liquid replenishing state in which the refrigerant liquid pipeline is replenished with refrigerant liquid using an external liquid source; In response to the liquid refrigeration device being in the first liquid replenishment state or the second liquid replenishment state, the first electric valve and the liquid replenishment pump are opened to provide the refrigerant liquid provided by the external liquid source or the liquid replenishment tank to the refrigerant liquid pipeline through the liquid replenishment pipeline.

7. The control method according to claim 6, characterized in that: The method further comprises: In response to the liquid refrigeration device being in the first liquid replenishing state, opening a second electric valve between the liquid replenishing tank and the liquid replenishing pump, and closing a third electric valve between the external liquid source and the liquid replenishing pump; or In response to the liquid refrigeration device being in the second liquid replenishing state, opening the third electric valve and closing the second electric valve; and / or In response to the liquid level of the liquid replenishing tank being lower than a preset first liquid level threshold, instructing the liquid refrigeration device to enter a third liquid replenishing state; In response to entering the third liquid replenishment state, opening a fourth electric valve between the output end of the liquid replenishment pump and the liquid replenishment tank, closing the first electric valve and the second electric valve, and opening the third electric valve, so that the external liquid source replenishes the refrigerant liquid for the liquid replenishment tank; In response to the liquid level of the liquid replenishing tank being higher than or equal to a second liquid level threshold, an instruction is given to close the fourth electric valve to stop the third liquid replenishing state.

8. The control method according to claim 6, characterized in that: The method of instructing the liquid refrigeration device to enter a first liquid replenishing state in which the liquid replenishing tank is used to replenish the refrigerant liquid in the refrigerant liquid pipeline, or to enter a second liquid replenishing state in which the external liquid source is used to replenish the refrigerant liquid in the refrigerant liquid pipeline, according to the pressure state of the refrigerant liquid pipeline in the liquid refrigeration device and the liquid level state of the liquid replenishing tank, comprises: In response to the liquid pressure of the refrigerant liquid pipeline being in a state of waiting for liquid replenishment, detecting a liquid level state of the liquid replenishment tank; If the liquid level of the liquid replenishing tank is higher than or equal to a third liquid level threshold, the liquid refrigeration device is instructed to enter the first liquid replenishing state; If the liquid level of the liquid replenishing tank is lower than the third liquid level threshold, the liquid refrigeration device is instructed to enter the second liquid replenishing state.

9. The control method according to claim 8, characterized in that: In response to the liquid pressure of the refrigerant liquid pipeline being in a state of waiting for liquid replenishment, detecting the liquid level state of the liquid replenishment tank includes: Detecting the liquid pressure of the refrigerant liquid pipeline, and if the liquid pressure is lower than or equal to a preset first pressure threshold, detecting the liquid level state of the liquid replenishing tank; The method further comprises: If the liquid pressure is higher than or equal to a preset second pressure threshold, the first liquid replenishing state or the second liquid replenishing state is stopped, and the normal refrigeration state is entered.

10. A liquid cooling system, characterized in that: include: A pipe network used to cool down the refrigeration object; The liquid refrigeration device according to any one of claims 1 to 5; wherein the refrigerant liquid pipeline of the liquid refrigeration device is connected to the pipe network; A cold source is connected to a cold source pipeline of the liquid refrigeration device.

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