A node liquid cooling control method and device

Abstract

The present specification provides a node liquid cooling control method and device, which relates to the field of heat exchange. A node liquid cooling control method, applied to the controller of a node liquid cooling system, includes: starting the node liquid cooling system, connecting the first end of the first four-way valve and the second end of the first four-way valve, connecting the first end of the second four-way valve and the third end of the second four-way valve; if a liquid cooling maintenance instruction is received, then controlling the first end of the first four-way valve and the third end of the first four-way valve to be connected, controlling the first end of the second four-way valve and the fourth end of the second four-way valve to be connected, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and controlling the cold row to start. The above method can improve the reliability of liquid cooling heat dissipation of electronic equipment.

Description

Technical Field

[0001] The present invention relates to the field of heat exchange technology, and in particular to a node liquid cooling control method and device. Background Art

[0002] With the development of electronic technology, the heat generated by electronic equipment has gradually increased, and air cooling can hardly meet the heat dissipation needs of electronic equipment. Therefore, liquid cooling with higher heat dissipation efficiency has gradually been applied to electronic equipment.

[0003] In the current liquid cooling system, the CDU (Cooling Distribution Units) distributes the cold liquid to the cold plate through pipes and manifolds for heat exchange, and returns it to the CDU for circulation. However, when the CDU fails or the pipe plug fails and leaks, the liquid cooling system needs to be shut down as a whole for repair. During this process, the liquid cooling cycle in the electronic equipment will stop until the fault is eliminated, causing the heat dissipation of the liquid cooling system to stop, the temperature in the electronic equipment to rise, causing device failure or even damage, and reducing the heat dissipation reliability of the liquid cooling system. Summary of the invention

[0004] In order to overcome the problems existing in the related art, this specification provides a node liquid cooling control method and device.

[0005] According to a first aspect of an embodiment of this specification, a node liquid cooling system is provided, which is applied to an electronic device, including:

[0006] A first four-way valve, a water pump, a target cold plate, a second four-way valve, a cold row, a three-way valve and a controller;

[0007] The first end of the first four-way valve is connected to the liquid cooling inlet end of the node liquid cooling system, the second end of the first four-way valve is connected to the pipeline between the water pump outlet of the water pump and the cold plate inlet of the target cold plate, the third end of the first four-way valve is connected to the water pump inlet of the water pump, and the fourth end of the first four-way valve is connected to the pipeline between the second four-way valve and the cold row inlet of the cold row;

[0008] A water pump inlet of the water pump is connected to a cold plate inlet of the target cold plate;

[0009] A first end of the second four-way valve is connected to the cold plate outlet of the target cold plate, a second end of the second four-way valve is connected to a pipeline between the water pump outlet of the water pump and the cold plate inlet of the target cold plate, a third end of the second four-way valve is connected to the liquid cooling return end of the node liquid cooling system, and a fourth end of the second four-way valve is connected to the cold row inlet of the cold row;

[0010] The first end of the three-way valve is connected to the cold row outlet of the cold row, the second end of the three-way valve is connected to the pipeline between the third end of the second four-way valve and the liquid cooling return end of the node liquid cooling system, and the third end of the three-way valve is connected to the pipeline between the liquid cooling inlet end of the node liquid cooling system and the first end of the first four-way valve;

[0011] The controller is electrically connected to the first four-way valve, the water pump, the second four-way valve, the cold row and the three-way valve respectively;

[0012] If the external liquid cooling cycle formed from the liquid cooling return end to the liquid cooling inlet end is disconnected, the controller controls the first end of the first four-way valve and the third end of the first four-way valve to be connected, controls the first end of the second four-way valve and the fourth end of the second four-way valve to be connected, controls the first end of the three-way valve and the third end of the three-way valve to be connected, and controls the start-up of the cold row.

[0013] Optionally, the cold row is arranged on the outside of the electronic device, and a liquid collection tray is arranged below the cold row.

[0014] According to a second aspect of an embodiment of this specification, a liquid cooling circulation system is provided, comprising:

[0015] A node liquid cooling system as described in any of the above items; and

[0016] CDU, wherein the circulation output end of the CDU is connected to the liquid cooling inlet end of the node liquid cooling system, and the circulation input end of the CDU is connected to the liquid cooling return end of the node liquid cooling system.

[0017] According to a third aspect of an embodiment of this specification, a node liquid cooling control method is provided, which is applied to a controller of any of the above node liquid cooling systems, and the method includes:

[0018] Start the node liquid cooling system, connect the first end of the first four-way valve and the second end of the first four-way valve, and connect the first end of the second four-way valve and the third end of the second four-way valve;

[0019] If a liquid cooling maintenance instruction is received, the first end of the first four-way valve and the third end of the first four-way valve are controlled to be connected, the first end of the second four-way valve and the fourth end of the second four-way valve are controlled to be connected, the first end of the three-way valve and the third end of the three-way valve are controlled to be connected, and the cold row is controlled to start.

[0020] Optionally, after starting the node liquid cooling system, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes:

[0021] If a pressurization instruction is received, the second end of the first four-way valve is controlled to be closed, the first end of the first four-way valve and the third end of the first four-way valve are connected, and the water pump is started.

[0022] Optionally, after starting the node liquid cooling system, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes:

[0023] If it is detected that the temperature of the cold liquid in the first four-way valve is not greater than the preset temperature, the second end of the second four-way valve is controlled to open.

[0024] Optionally, after starting the node liquid cooling system, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes:

[0025] If the first switching instruction is received, the fourth end of the first four-way valve is opened, and the cold row is controlled to start.

[0026] Optionally, after opening the fourth end of the first four-way valve, the method further includes:

[0027] If it is detected that the temperature of the cold liquid in the first four-way valve is not greater than the preset temperature, the fourth end of the second four-way valve is opened.

[0028] Optionally, after controlling the cold row to start, the method further includes:

[0029] If a second switching instruction is received, the first end of the first four-way valve and the second end of the first four-way valve are controlled to be closed, the third end of the first four-way valve and the fourth end of the first four-way valve are connected, the first end of the three-way valve and the third end of the three-way valve are controlled to be connected, and the water pump is started.

[0030] Optionally, after controlling the first end of the first four-way valve and the second end of the first four-way valve to be closed, connecting the third end of the first four-way valve and the fourth end of the first four-way valve, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and starting the water pump, the method further includes:

[0031] The fourth end of the second four-way valve is controlled to be open.

[0032] Optionally, after controlling the cold row to start, the method further includes:

[0033] According to the detected temperature value of the target heating device corresponding to the target cold plate, the wind speed of the fan in the cold row is adjusted.

[0034] According to a fourth aspect of an embodiment of this specification, a node liquid cooling control device is provided, which is applied to a controller of a node liquid cooling system as described above, and the device includes:

[0035] A starting unit, used to start the node liquid cooling system, connect the first end of the first four-way valve and the second end of the first four-way valve, and connect the first end of the second four-way valve and the third end of the second four-way valve;

[0036] A control unit is used for controlling the first end of the first four-way valve and the third end of the first four-way valve to be connected, controlling the first end of the second four-way valve and the fourth end of the second four-way valve to be connected, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and controlling the start-up of the cold row if a liquid cooling maintenance instruction is received.

[0037] Optionally, the control unit is further used to control the second end of the first four-way valve to close, connect the first end of the first four-way valve and the third end of the first four-way valve, and start the water pump if a pressurization command is received.

[0038] Optionally, the control unit is further used to control the second end of the second four-way valve to open if it is detected that the temperature of the cold liquid in the first four-way valve is not greater than a preset temperature.

[0039] Optionally, the control unit is further configured to open the fourth end of the first four-way valve and control the start-up of the cold row if a first switching instruction is received.

[0040] Optionally, after opening the fourth end of the first four-way valve, the control unit is further configured to open the fourth end of the second four-way valve if it is detected that the temperature of the cold liquid in the first four-way valve is not greater than a preset temperature.

[0041] Optionally, after controlling the start of the cold discharger, the control unit is also used to, if a second switching instruction is received, control the first end of the first four-way valve and the second end of the first four-way valve to be closed, connect the third end of the first four-way valve and the fourth end of the first four-way valve, control the first end of the three-way valve and the third end of the three-way valve to be connected, and start the water pump.

[0042] Optionally, the control unit is used to control the fourth end of the second four-way valve to open after controlling the first end of the first four-way valve and the second end of the first four-way valve to close, connecting the third end of the first four-way valve and the fourth end of the first four-way valve, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and starting the water pump.

[0043] Optionally, after controlling the cold row to start, the control unit is further used to adjust the wind speed of the fan in the cold row according to the temperature value of the target heating device corresponding to the target cold plate detected.

[0044] According to a fifth aspect of the embodiments of this specification, a machine-readable storage medium is provided, which stores machine-executable instructions. When called and executed by a processor, the machine-executable instructions prompt the processor to: implement any of the method steps described above.

[0045] The technical solutions provided by the embodiments of this specification may have the following beneficial effects:

[0046] In the embodiment of the present specification, when a node liquid cooling system is set in the electronic device and is working normally, if a maintenance instruction indicating a failure of an external liquid cooling cycle is received, the external liquid cooling cycle of the node liquid cooling system is used and conducted to the internal liquid cooling cycle of the cold radiator, so as to avoid the problem that the electronic device cannot dissipate heat when the external liquid cooling cycle needs maintenance, thereby improving the heat dissipation reliability of the electronic device.

[0047] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0049] Figure 1 It is a structural schematic diagram of a liquid cooling circulation system involved in this application;

[0050] Figure 2 It is a flow chart of a node liquid cooling control method involved in this application;

[0051] Figure 3 is a structural schematic diagram of a liquid cooling circulation system involved in an embodiment of the present application, wherein the node liquid cooling system is in an initial state;

[0052] Figure 4 is a schematic diagram of the structure of a liquid cooling circulation system involved in an embodiment of the present application, wherein the node liquid cooling system performs internal circulation;

[0053] Figure 5 It is a structural schematic diagram of a liquid cooling circulation system involved in an embodiment of the present application, wherein the node liquid cooling system accelerates the flow rate through a water pump;

[0054] Figure 6 is a schematic diagram of a structure of a liquid cooling circulation system involved in an embodiment of the present application, wherein the liquid flows back to the target cold plate through a second four-way valve to avoid condensation;

[0055] Figure 7It is a structural schematic diagram of a liquid cooling circulation system involved in the present application, wherein the liquid flows to the cold row through the first four-way valve to cool the ambient temperature;

[0056] Figure 8 It is a structural schematic diagram of a liquid cooling circulation system involved in an embodiment of the present application, wherein the mixed liquid flows to the cold row through the first four-way valve and the second four-way valve to avoid condensation;

[0057] Fig. 9 is a structural schematic diagram of a liquid cooling circulation system involved in an embodiment of the present application, wherein the cold row is connected in series;

[0058] Fig.10 It is a structural schematic diagram of a node liquid cooling control device involved in this application. DETAILED DESCRIPTION

[0059] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0060] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this specification. The singular forms "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0061] It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this specification, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0062] The present application provides a node liquid cooling system 100, which is applied to an electronic device 200, such as Figure 1 As shown, including:

[0063] A first four-way valve 1, a water pump 2, a target cold plate 3, a second four-way valve 4, a cold row 5, a three-way valve 6 and a controller (not shown);

[0064] The first end 11 of the first four-way valve 1 is connected to the liquid cooling inlet end 100A of the node liquid cooling system 100, the second end 12 of the first four-way valve 1 is connected to the pipeline between the water pump outlet 22 of the water pump 2 and the cold plate inlet 31 of the target cold plate 3, the third end 13 of the first four-way valve 1 is connected to the water pump inlet of the water pump 2, and the fourth end 14 of the first four-way valve 1 is connected to the pipeline between the second four-way valve 4 and the cold row inlet 51 of the cold row 5;

[0065] The water pump inlet of the water pump 2 is connected to the cold plate inlet 31 of the target cold plate 3;

[0066] The first end 41 of the second four-way valve 4 is connected to the cold plate outlet of the target cold plate 3, the second end 42 of the second four-way valve 4 is connected to the pipeline between the water pump outlet of the water pump 2 and the cold plate inlet 31 of the target cold plate 3, the third end 43 of the second four-way valve 4 is connected to the liquid cooling return end 100B of the node liquid cooling system 100, and the fourth end 44 of the second four-way valve 4 is connected to the cold row inlet 51 of the cold row 5;

[0067] The first end 61 of the three-way valve 6 is connected to the cold discharge outlet 52 of the cold discharge 5, the second end 62 of the three-way valve 6 is connected to the pipeline between the third end 43 of the second four-way valve 4 and the liquid cooling return end 100B of the node liquid cooling system 100, and the third end 63 of the three-way valve 6 is connected to the pipeline between the liquid cooling inlet end 100A of the node liquid cooling system 100 and the first end 11 of the first four-way valve 1;

[0068] The controller is electrically connected to the first four-way valve 1, the water pump 2, the second four-way valve 4, the cold row 5 and the three-way valve 6, respectively, wherein the controller issues different instructions to realize the opening and closing of different ends of the first four-way valve 1, the second four-way valve 4 and the three-way valve 6, and realizes the opening and closing of the water pump 2 and the opening and closing of the cold row 5. For the first four-way valve 1, the second four-way valve 4 and the three-way valve 6, the controller can control them to adjust different openings to adjust the flow in the pipeline. A fan can be provided in the cold row 5, and the controller can control the speed of the fan to adjust the power consumption of the cold row 5;

[0069] If the external liquid cooling cycle formed from the liquid cooling return end 100B to the liquid cooling inlet end 100A is disconnected, the controller controls the first end 11 of the first four-way valve 1 and the third end 13 of the first four-way valve 1 to be connected, controls the first end 41 of the second four-way valve 4 and the fourth end 44 of the second four-way valve 4 to be connected, controls the first end 61 of the three-way valve 6 and the third end 63 of the three-way valve 6 to be connected, and controls the cold row 5 to start.

[0070] The electronic device 200 may be a switch, a router, a network security device, a server, a personal computer, etc. The liquid cooling inlet end 100A and the liquid cooling return end 100B may be arranged on the chassis of the electronic device 200 to facilitate the connection between the external liquid cooling cycle and the node liquid cooling system 100.

[0071] The target cold plate 3 can be attached to a heat generating device such as a processor and an image processing unit to absorb heat from the heat generating device and remove heat from the electronic device through the circulation of cold liquid in the pipeline. The target cold plate 3 can be set in a form of multiple parallel connections or multiple series connections, depending on actual needs.

[0072] In a fully liquid-cooled electronic device, a fan may not be provided, and the cooling of the heat generating components in the electronic device can be achieved only by the circulation of the cold liquid. The cold row 5 may be provided with a fan, and the cold row 5 may be provided on the side of the air inlet or the air outlet. Generally speaking, when no air conditioner is provided in the equipment room, the temperature of the discharged hot air can be reduced by providing the cold row 5 on the side of the air outlet, thereby avoiding the influence of the high ambient temperature in the equipment room on the heat dissipation.

[0073] External liquid cooling can be achieved by Figure 1 The CDU7 shown in the figure can also be implemented by other liquid cooling methods. In addition, the CDU7 can be connected to the node liquid cooling systems of multiple electronic devices 200 through the manifolds and distributors 7A and 7B respectively, and there is no limitation on this.

[0074] In the case where the external liquid cooling cycle fails and is disconnected, for example, the CDU 7 is damaged or the liquid cooling joints of the manifold 7A and 7B leak, it is necessary to shut down the cold liquid delivery from the CDU 7 to the electronic device 200. At this time, the controller in the electronic device 200 can control the first four-way valve 1 to close the first end 11 and the third end 43 of the second four-way valve 4 to cut off the cold liquid exchange between the node liquid cooling system 100 of the electronic device 200 and the CDU 7.

[0075] In order to continue to dissipate heat inside the electronic device 200 during external liquid cooling cycle maintenance, the water pump 2 and the radiator 5 are turned on, and the cold liquid circulation in the pipeline is maintained by the water pump 2. The hot air blown out of the electronic device 200 (or the air sucked into the electronic device) is cooled by the fan of the radiator 5. In this way, moderate heat dissipation in the electronic device 200 is maintained, avoiding damage caused by a rapid increase in temperature inside the electronic device when the external liquid cooling cycle is stopped, and improving the reliability of liquid cooling heat dissipation of the electronic device.

[0076] Optionally, the cold row 5 is arranged on the outside of the electronic device, and a liquid collection tray is arranged below the cold row 5 .

[0077] In some scenarios, a plurality of storage nodes, computing nodes, switching nodes, etc. may be arranged in a machine frame, and the machine frame and these nodes constitute a server. A cold row 5 may be arranged in a machine frame for auxiliary heat dissipation. In this case, multiple nodes share one cold row 5. Since the cold row 5 is arranged outside, the condensed water or cold liquid dripping from the cold row 5 can be directly discharged by setting a liquid collection tray, thereby improving the maintainability of the node liquid cooling system.

[0078] Correspondingly, the present application also provides a liquid cooling circulation system, such as Figure 1 As shown, including:

[0079] The node liquid cooling system 100 described above; and

[0080] CDU7, wherein the circulation output end 71 of the CDU7 is connected to the liquid cooling inlet end 100A of the node liquid cooling system 100, and the circulation input end 72 of the CDU7 is connected.

[0081] Correspondingly, the present application also provides a node liquid cooling control method, which is applied to the controller of any of the above node liquid cooling systems, and the method, as Figure 2 As shown, including:

[0082] S100, start the node liquid cooling system, connect the first end of the first four-way valve and the second end of the first four-way valve, and connect the first end of the second four-way valve and the third end of the second four-way valve.

[0083] exist Figure 1 After the liquid cooling circulation system is built, CDU7 is connected to the node liquid cooling system 100. In general, the cooling liquid circulation power is provided by CDU7, and RMC (Rack Management Controller) is provided in CDU7. The controller in the electronic device may be BMC (Baseboard Management Controller). The flow rate, temperature, pressure, etc. of the cooling liquid in CDU7 can be detected through RMC, and the water pump in CDU7 can be controlled. RMC can also exchange data with the BMC of each electronic device to realize the linkage control with CDU7 and the node liquid cooling system 100.

[0084] When CDU7 starts, RMC can send a startup command to BMC to make the node liquid cooling system 100 work in a preset mode, that is, receive the input of cold liquid from the CDU7 side, and return the cold liquid to CDU7 after circulating in the node liquid cooling system 100.

[0085] At this time, the BMC controls the first end 11 of the first four-way valve 1 and the second end 12 of the first four-way valve 1 to open to receive the cold liquid input from the CDU 7. Since the power of the cold liquid is sufficient, in order to save power consumption, the node liquid cooling system 100 may not start the water pump 2 first, but supply liquid to the target cold plate 3 through the second end 12 of the first four-way valve 1. The flow direction of the cold liquid is as follows: Figure 3 As indicated by the arrow.

[0086] When the heat dissipation efficiency is sufficient, the heat of the electronic equipment is taken out through the target cold plate, and less is discharged into the environment. There is no need to start the cold row 5 for cooling. Therefore, the first end 61, the second end 62 and the third end 63 of the three-way valve 6 can be closed, and the second four-way valve 4 can also only open its first end 41 and the third end 43 to realize the return of cold liquid to the CDU 7.

[0087] S101. If a liquid cooling maintenance instruction is received, the first end of the first four-way valve and the third end of the first four-way valve are controlled to be connected, the first end of the second four-way valve and the fourth end of the second four-way valve are controlled to be connected, the first end of the three-way valve and the third end of the three-way valve are controlled to be connected, and the cold row is controlled to start.

[0088] The liquid cooling maintenance instruction may be an instruction triggered when the RMC detects a failure or liquid leakage in the CDU 7, or may be an instruction issued by a staff member.

[0089] In order to prevent the overall cooling liquid circulation from being interrupted due to CDU7 failure and the cooling liquid pressure in the pipeline from continuously decreasing due to leakage, the external cooling liquid circulation needs to be cut off. First, the BMC needs to close the first end 11 of the first four-way valve 1 and the third end 43 of the second four-way valve 4, and then open the third end 13 of the first four-way valve 1, the fourth end 44 of the second four-way valve 4, and the first end 61 and the third end 63 of the three-way valve 6, and start the water pump 2 and the radiator 5.

[0090] At this time, the cold liquid flows through the first four-way valve 1 and the water pump 2 to the target cold plate 3, and flows back to the first four-way valve 1 through the second four-way valve 4, the cold row 5 and the three-way valve 6, forming a cold liquid circulation. In the case of an abnormality of external liquid cooling cycle failure or leakage, the cold row 5 is used for auxiliary heat dissipation, waiting for the external liquid cooling cycle to eliminate the abnormality. The flow direction of the cold liquid is as follows: Figure 4 As indicated by the arrow.

[0091] Optionally, after starting the node liquid cooling system in step S100, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes:

[0092] S102: If a pressurization instruction is received, the second end of the first four-way valve is controlled to be closed, the first end of the first four-way valve and the third end of the first four-way valve are connected, and the water pump is started.

[0093] When CDU7 is connected to a node liquid cooling system 100 of multiple electronic devices 200, the liquid cooling circulation power in each node liquid cooling system 100 will decrease, and since the liquid cooling circulation power is related to the heat dissipation efficiency of the node liquid cooling system 100, the decrease in the liquid cooling circulation power will cause the heat dissipation efficiency of the node liquid cooling system 100 to decrease.

[0094] In order to improve the heat dissipation efficiency of the node liquid cooling system 100, when receiving the pressurization command, the BMC can close the second end 12 of the first four-way valve 1 to stop the natural flow of the coolant in the node liquid cooling system 100, and open the third end 13 of the first four-way valve 1 and the water pump 2 to speed up the flow rate of the coolant in the pipeline through the water pump 2, thereby maintaining the heat dissipation efficiency of the node liquid cooling system. Figure 5 As indicated by the arrow.

[0095] Optionally, after starting the node liquid cooling system in step S100, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes:

[0096] S103: If it is detected that the temperature of the cold liquid in the first four-way valve is not greater than a preset temperature, control the second end of the second four-way valve to open.

[0097] In liquid cooling, condensation may occur on the cold plate due to excessive temperature difference. The condensation generated on these pipes may drip onto the electrical components in the electronic equipment, causing a short circuit.

[0098] A temperature detection sensor may be integrated in the first four-way valve 1 to detect the temperature of the cold liquid flowing through the first four-way valve 1. If it is detected that the temperature of the cold liquid in the first four-way valve 1 is not greater than a preset temperature (the preset temperature may be the dew point temperature of the selected cold liquid), the second end 42 of the second four-way valve 4 may be opened to return the cold liquid with a relatively high temperature after passing through the target cold plate 3 to the pipeline between the target cold plate 3 and the water pump 2 for mixing, thereby increasing the temperature of the cold liquid entering the target cold plate 3, so as to avoid condensation on the cold plate causing failure of the electronic equipment, thereby further improving the reliability of liquid cooling of the electronic equipment. Figure 6 As indicated by the arrow.

[0099] Optionally, after starting the node liquid cooling system in step S100, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes:

[0100] S104: If a first switching instruction is received, the fourth end of the first four-way valve is opened, and the cold row is controlled to start.

[0101] The first switching instruction is used to start the cold row 5 to assist in cooling the environment when the node liquid cooling system 100 is working normally.

[0102] The BMC controls the fourth end 14 of the first four-way valve 1 to open, so that the low-temperature cold liquid that has just entered the node liquid cooling system 100 flows into the cold row 5, and cooperates with the fan of the cold row 5 to cool the hot air blown out of the cold row 5 to prevent the heat generated by the electronic equipment from affecting the ambient temperature. Figure 7 In addition, the second end 62 of the three-way valve 6 can be judged according to the temperature inside the three-way valve 6 when the cold row 5 is opened, and when the temperature inside the three-way valve 6 is higher than a preset temperature, it flows to the liquid cooling return end 100B to cool the CDU 7.

[0103] Optionally, after step S104, opening the fourth end of the first four-way valve, the method further includes:

[0104] S105: If it is detected that the temperature of the cold liquid in the first four-way valve is not greater than a preset temperature, the fourth end of the second four-way valve is opened.

[0105] When the cooling liquid in the first four-way valve 1 flows into the cold radiator 5 to cool down the ambient temperature, the cold radiator 5 may also have condensation problems due to the large temperature difference. Therefore, when the BMC determines that the cooling liquid temperature in the first four-way valve 1 is not greater than the preset temperature (that is, when condensation may occur at the cold radiator 5), the cooling liquid temperature passing through the cold radiator 5 needs to be increased.

[0106] At this time, the BMC can control the fourth end 44 of the second four-way valve 4 to open. Since the cold liquid flowing through the second four-way valve 4 has flowed through the target cold plate 3 to absorb the heat generated by the heating device, the temperature of the cold liquid is increased. Therefore, this part of the cold liquid is mixed with the cold liquid input to the cold row 5 through the first four-way valve 1 to increase the temperature of the cold liquid input to the cold row 5, avoiding the condensation problem caused by the cold liquid temperature being higher than the preset temperature. The flow direction of the cold liquid is as follows: Figure 8 As indicated by the arrow.

[0107] Optionally, after step S101 and step S104, controlling the cold row to start, the method further includes:

[0108] S106. If a second switching instruction is received, the first end of the first four-way valve and the second end of the first four-way valve are controlled to be closed, the third end of the first four-way valve and the fourth end of the first four-way valve are connected, the first end of the three-way valve and the third end of the three-way valve are controlled to be connected, and the water pump is started.

[0109] After the BMC starts the radiator 5, the series connection mode between the radiator 5 and other pipelines can also be realized. At this time, when the BMC receives the second switching instruction issued by the RMC or the staff, the first end 11 and the third end 13 of the first four-way valve 1 are opened, the first end 41 and the fourth end 44 of the second four-way valve 4 are opened, the first end 61 and the third end 63 of the three-way valve 6 are opened, and the fourth end 14 of the first four-way valve 1 may be opened or closed, and the radiator 5 is turned on.

[0110] In order for the cooling liquid to flow into the cooling radiator 5 first to cool down the ambient temperature first, it is necessary to disconnect the conduction between the liquid cooling inlet end 100A and the first end 11 of the first four-way valve 1, that is, to close the first end 11 of the first four-way valve 1, and allow the cooling liquid to flow into the cooling radiator 5 through the third end 63 of the three-way valve 6 to the first end 61 without passing through the first four-way valve 1 to cool down the ambient temperature.

[0111] Since the second end 12 of the first four-way valve 1 is closed, the cold liquid left from the cold row 5 passes through the fourth end 14 of the first four-way valve 1 to the activated water pump 2 for acceleration, flows into the target cold plate 3 to absorb the heat generated by the heating device, and then flows to the liquid cooling return end 100B through the first end 41 and the third end 43 of the second four-way valve 4 that have been turned on to complete the circulation of the cold liquid between the CDU 7 and the node liquid cooling system 100. The flow direction of the cold liquid is as follows: Fig. 9 As indicated by the arrow.

[0112] Optionally, after step S106, controlling the first end of the first four-way valve and the second end of the first four-way valve to be closed, connecting the third end of the first four-way valve and the fourth end of the first four-way valve, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and starting the water pump, the method further includes:

[0113] S107, controlling the fourth end of the second four-way valve to open.

[0114] Through the above step S107, the cold liquid after absorbing heat can be mixed at the radiator 5 to avoid the occurrence of condensation.

[0115] Optionally, after step S101 and step S104, controlling the cold row to start, the method further includes:

[0116] S108: Adjust the wind speed of the fan in the cold row according to the detected temperature value of the target heating device corresponding to the target cold plate.

[0117] After the radiator 5 is started, since the radiator 5 is configured with a fan, the rotation speed of the fan can be adjusted based on the temperature value of the target heating device detected by the BMC. On the one hand, it can accelerate the discharge of heat in the electronic device 200, and on the other hand, it can avoid the problem of the ambient temperature being raised synchronously when the temperature inside the electronic device 200 is too high, thereby further improving the reliability of liquid cooling in the electronic device.

[0118] Correspondingly, the present application also provides a node liquid cooling control device, such as Fig.10 As shown, a controller for a node liquid cooling system applied to any of the above items, the device comprising:

[0119] A starting unit, used to start the node liquid cooling system, connect the first end of the first four-way valve and the second end of the first four-way valve, and connect the first end of the second four-way valve and the third end of the second four-way valve;

[0120] A control unit is used for controlling the first end of the first four-way valve and the third end of the first four-way valve to be connected, controlling the first end of the second four-way valve and the fourth end of the second four-way valve to be connected, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and controlling the start-up of the cold row if a liquid cooling maintenance instruction is received.

[0121] Optionally, the control unit is further used to control the second end of the first four-way valve to close, connect the first end of the first four-way valve and the third end of the first four-way valve, and start the water pump if a pressurization command is received.

[0122] Optionally, the control unit is further used to control the second end of the second four-way valve to open if it is detected that the temperature of the cold liquid in the first four-way valve is not greater than a preset temperature.

[0123] Optionally, the control unit is further configured to open the fourth end of the first four-way valve and control the start-up of the cold row if a first switching instruction is received.

[0124] Optionally, after opening the fourth end of the first four-way valve, the control unit is further configured to open the fourth end of the second four-way valve if it is detected that the temperature of the cold liquid in the first four-way valve is not greater than a preset temperature.

[0125] Optionally, after controlling the start of the cold discharger, the control unit is also used to, if a second switching instruction is received, control the first end of the first four-way valve and the second end of the first four-way valve to be closed, connect the third end of the first four-way valve and the fourth end of the first four-way valve, control the first end of the three-way valve and the third end of the three-way valve to be connected, and start the water pump.

[0126] Optionally, the control unit is used to control the fourth end of the second four-way valve to open after controlling the first end of the first four-way valve and the second end of the first four-way valve to close, connecting the third end of the first four-way valve and the fourth end of the first four-way valve, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and starting the water pump.

[0127] Optionally, after controlling the cold row to start, the control unit is further used to adjust the wind speed of the fan in the cold row according to the temperature value of the target heating device corresponding to the target cold plate detected.

[0128] Correspondingly, the present application also provides a machine-readable storage medium storing machine-executable instructions. When called and executed by a processor, the machine-executable instructions prompt the processor to implement any of the method steps described above.

[0129] The technical solutions provided by the embodiments of this specification may have the following beneficial effects:

[0130] In the embodiment of the present specification, when a node liquid cooling system is set in the electronic device and is working normally, if a maintenance instruction indicating a failure of an external liquid cooling cycle is received, the external liquid cooling cycle of the node liquid cooling system is used and conducted to the internal liquid cooling cycle of the cold radiator, so as to avoid the problem that the electronic device cannot dissipate heat when the external liquid cooling cycle needs maintenance, thereby improving the heat dissipation reliability of the electronic device.

[0131] The implementation process of the functions and effects of each module in the above-mentioned device is specifically described in the implementation process of the corresponding steps in the above-mentioned method, which will not be repeated here.

[0132] For the device embodiment, since it basically corresponds to the method embodiment, the relevant parts can refer to the partial description of the method embodiment. The device embodiment described above is only schematic, wherein the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical modules, that is, they may be located in one place, or they may be distributed on multiple network modules. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this specification. A person of ordinary skill in the art can understand and implement it without paying creative labor.

[0133] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0134] Those skilled in the art will readily appreciate other embodiments of the specification after considering the specification and practicing the invention claimed herein. The specification is intended to cover any variations, uses or adaptations of the specification that follow the general principles of the specification and include common knowledge or customary techniques in the art that are not claimed in the specification. The specification and examples are to be considered exemplary only, and the true scope and spirit of the specification are indicated by the following claims.

[0135] It should be understood that the present description is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.

[0136] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this specification should be included in the scope of protection of this specification.

Claims

1. A node liquid cooling system, characterized in that: Used in electronic equipment, including: A first four-way valve, a water pump, a target cold plate, a second four-way valve, a cold row, a three-way valve and a controller; The first end of the first four-way valve is connected to the liquid cooling inlet end of the node liquid cooling system, the second end of the first four-way valve is connected to the pipeline between the water pump outlet of the water pump and the cold plate inlet of the target cold plate, the third end of the first four-way valve is connected to the water pump inlet of the water pump, and the fourth end of the first four-way valve is connected to the pipeline between the second four-way valve and the cold row inlet of the cold row; A water pump inlet of the water pump is connected to a cold plate inlet of the target cold plate; A first end of the second four-way valve is connected to the cold plate outlet of the target cold plate, a second end of the second four-way valve is connected to a pipeline between the water pump outlet of the water pump and the cold plate inlet of the target cold plate, a third end of the second four-way valve is connected to the liquid cooling return end of the node liquid cooling system, and a fourth end of the second four-way valve is connected to the cold row inlet of the cold row; The first end of the three-way valve is connected to the cold row outlet of the cold row, the second end of the three-way valve is connected to the pipeline between the third end of the second four-way valve and the liquid cooling return end of the node liquid cooling system, and the third end of the three-way valve is connected to the pipeline between the liquid cooling inlet end of the node liquid cooling system and the first end of the first four-way valve; The controller is electrically connected to the first four-way valve, the water pump, the second four-way valve, the cold row and the three-way valve respectively; If the external liquid cooling cycle formed from the liquid cooling return end to the liquid cooling inlet end is disconnected, the controller controls the first end of the first four-way valve and the third end of the first four-way valve to be connected, controls the first end of the second four-way valve and the fourth end of the second four-way valve to be connected, controls the first end of the three-way valve and the third end of the three-way valve to be connected, and controls the start-up of the cold row.

2. A liquid cooling circulation system, characterized in that: include: The node liquid cooling system as described in claim 1 above; as well as, A cooling distribution unit CDU, wherein a circulation output end of the CDU is connected to a liquid cooling inlet end of the node liquid cooling system, and a circulation input end of the CDU is connected to a liquid cooling return end of the node liquid cooling system.

3. A node liquid cooling control method, characterized in that: The method applied to the controller of the node liquid cooling system of claim 1 above comprises: Start the node liquid cooling system, connect the first end of the first four-way valve and the second end of the first four-way valve, and connect the first end of the second four-way valve and the third end of the second four-way valve; If a liquid cooling maintenance instruction is received, the first end of the first four-way valve and the third end of the first four-way valve are controlled to be connected, the first end of the second four-way valve and the fourth end of the second four-way valve are controlled to be connected, the first end of the three-way valve and the third end of the three-way valve are controlled to be connected, and the cold row is controlled to start.

4. The method according to claim 3, characterized in that: After starting the node liquid cooling system, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes: If a pressurization instruction is received, the second end of the first four-way valve is controlled to be closed, the first end of the first four-way valve and the third end of the first four-way valve are connected, and the water pump is started.

5. The method according to claim 3, characterized in that: After starting the node liquid cooling system, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes: If it is detected that the temperature of the cold liquid in the first four-way valve is not greater than the preset temperature, the second end of the second four-way valve is controlled to open.

6. The method according to claim 3, characterized in that After starting the node liquid cooling system, connecting the first end of the first four-way valve and the second end of the first four-way valve, and connecting the first end of the second four-way valve and the third end of the second four-way valve, the method further includes: If the first switching instruction is received, the fourth end of the first four-way valve is opened, and the cold row is controlled to start.

7. The method according to claim 6, characterized in that After opening the fourth end of the first four-way valve, the method further comprises: If it is detected that the temperature of the cold liquid in the first four-way valve is not greater than the preset temperature, the fourth end of the second four-way valve is opened.

8. The method according to claim 6, characterized in that After controlling the cold row to start, the method further includes: If a second switching instruction is received, the first end of the first four-way valve and the second end of the first four-way valve are controlled to be closed, the third end of the first four-way valve and the fourth end of the first four-way valve are connected, the first end of the three-way valve and the third end of the three-way valve are controlled to be connected, and the water pump is started.

9. The method according to claim 8, characterized in that After controlling the first end of the first four-way valve and the second end of the first four-way valve to be closed, connecting the third end of the first four-way valve and the fourth end of the first four-way valve, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and starting the water pump, the method further includes: The fourth end of the second four-way valve is controlled to be open.

10. The method according to claim 3 or 6, characterized in that: After controlling the cold row to start, the method further includes: According to the detected temperature value of the target heating device corresponding to the target cold plate, the wind speed of the fan in the cold row is adjusted.

11. A node liquid cooling control device, characterized in that: The controller for the node liquid cooling system according to claim 1, the device comprising: A starting unit, used to start the node liquid cooling system, connect the first end of the first four-way valve and the second end of the first four-way valve, and connect the first end of the second four-way valve and the third end of the second four-way valve; A control unit is used for controlling the first end of the first four-way valve and the third end of the first four-way valve to be connected, controlling the first end of the second four-way valve and the fourth end of the second four-way valve to be connected, controlling the first end of the three-way valve and the third end of the three-way valve to be connected, and controlling the start-up of the cold row if a liquid cooling maintenance instruction is received.

12. A machine-readable storage medium, characterized in that: Machine executable instructions are stored, and when called and executed by a processor, the machine executable instructions prompt the processor to: implement the method steps described in any one of claims 3-10.

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