Liquid cooling device for server

Abstract

The liquid cooling device comprises a first liquid cooling module, a second liquid cooling module and a heat exchanger, the first liquid cooling module comprises a first pipeline and a three-way valve, and the three-way valve is provided with a first channel, a second channel and a third channel; the second liquid cooling module is arranged on one side edge of the first liquid cooling module and comprises a second pipeline; the heat exchanger is arranged between the first pipeline and the second pipeline and is used for providing heat exchange between the first pipeline and the second pipeline; wherein in a normal state, the second channel communicates with the first channel, and in an abnormal state, the second channel and the third channel communicate with the first channel at the same time; wherein the heat exchange capacity of the first pipeline and the second pipeline in a normal state is greater than that in an abnormal state. Therefore, water drops can be effectively prevented from being condensed in the second pipeline.

Description

Technical Field

[0001] The present application relates to the technical field of a liquid cooling device, and in particular to a liquid cooling device for a server. Background Art

[0002] In the cooling system of the servers in existing data centers, the server's CPU, GPU and other high-density heat sources are cooled by liquid cooling devices, that is, liquid fluid is used to absorb heat through isolated contact with the server's main heat-generating chips, thereby taking away most of the heat from the components or modules in the server. This has become the best cooling solution currently available.

[0003] However, with the joint efforts and experiments of relevant industry players, the aforementioned heat dissipation issues have been overcome. However, due to the significant improvement in heat dissipation efficiency, condensation (or condensation) and other related issues have yet to be resolved. "Condensation" is a unique phenomenon that occurs when the air humidity is high. When the water vapor in the air reaches saturation, it condenses on objects with relatively low temperatures to form small water droplets. Liquid cooling devices are used to cool servers, and condensation can cause corrosion of components in the server, short circuits, and reduce the insulation and safety of the equipment. Summary of the invention

[0004] The purpose of the present application is to provide a liquid cooling device for a server, which can effectively prevent water droplets from condensing in each pipeline.

[0005] In order to achieve the above-mentioned purpose, the present application provides a liquid cooling device for a server, comprising a first liquid cooling module, a second liquid cooling module and a heat exchanger, wherein the first liquid cooling module comprises a first pipeline and a three-way valve arranged in the first pipeline, the three-way valve having a first channel, a second channel and a third channel; the second liquid cooling module is arranged on a side of the first liquid cooling module, and the second liquid cooling module comprises a second pipeline; the heat exchanger is arranged between the first pipeline and the second pipeline, and is used to provide heat exchange between the first pipeline and the second pipeline; wherein in a normal state, the second channel is connected to the first channel, and in an abnormal state, the second channel and the third channel are simultaneously connected to the first channel; wherein the heat exchange amount between the first pipeline and the second pipeline in the normal state is greater than the heat exchange amount between the first pipeline and the second pipeline in the abnormal state.

[0006] Further preferably, the first pipeline includes a first water delivery section, a second water delivery section and a third water delivery section, and the three-way valve is arranged between the first water delivery section, the second water delivery section and the third water delivery section.

[0007] Further preferably, the three-way valve has a first channel, a second channel and a third channel, the first channel has a first interface, the second channel has a second interface, the third channel has a third interface, one end of the first water transfer section is connected to the first interface, and the other end is connected to a water inlet end, one end of the second water transfer section is connected to the second interface, and the other end is connected to a water outlet end, one end of the third water transfer section is connected to the third interface, and the other end is connected to the second water transfer section.

[0008] Further preferably, the second water delivery section has a first heat exchange section, the second pipeline includes a second heat exchange section, and the heat exchanger is arranged between the first heat exchange section and the second heat exchange section.

[0009] Further preferably, the second liquid cooling module further includes a water pump assembly, the second pipeline includes a first water pipe section, and the water pump assembly is arranged on the first water pipe section.

[0010] Further preferably, the water pump assembly includes a first water pump, a first one-way valve, a second water pump and a second one-way valve, the first water pipe section includes a main channel and a primary pipeline, the main channel is connected to the first water pump and the first one-way valve in sequence, and the secondary pipeline is connected to the second water pump and the second one-way valve in sequence.

[0011] Further preferably, the second liquid cooling module also includes a buffer water tank, and the buffer water tank is arranged on the first water pipe section.

[0012] Further preferably, the second liquid cooling module also includes a filter, which is disposed on the first water pipe section, and the water pump assembly is located between the buffer water tank and the filter.

[0013] Further preferably, it also includes a control module, which includes a controller and a plurality of temperature sensors, each of the temperature sensors and the three-way valve is electrically connected to the controller, and each of the temperature sensors is arranged on the second pipeline.

[0014] Further preferably, the control module also includes a plurality of pressure sensors, each of the pressure sensors is electrically connected to the controller, the second pipeline includes a first water pipe section and a second water pipe section connected to the first water pipe section, one of the pressure sensors is arranged on the first water pipe section, and the other pressure sensor is arranged on the second water pipe section.

[0015] Further preferably, the control module further includes a temperature and humidity sensor, the temperature and humidity sensor is electrically connected to the controller, the server has a cabinet, and the temperature and humidity sensor is arranged in the cabinet.

[0016] Further preferably, the control module further includes a liquid leakage detection rope, which is electrically connected to the controller and is disposed on the first pipeline and the second pipeline.

[0017] Further preferably, it also includes a control module, which includes a controller and multiple temperature sensors, each of which is electrically connected to the three-way valve, wherein a part of the temperature sensors are arranged on the first pipeline, and another part of the temperature sensors are arranged on the second pipeline.

[0018] Further preferably, the second pipeline includes a first water pipe section, a second water pipe section and a second heat exchange section, the server has at least one water cooling plate, one end of the first water pipe section is connected to one end of the water cooling plate, and the other end is connected to one end of the second heat exchange section, one end of the second water pipe section is connected to the other end of the water cooling plate, and the other end is connected to the other end of the second heat exchange section.

[0019] The present application also has the following effects: by setting up various pressure sensors, the inlet and outlet pressures of the coolant are detected, and the flow rate of the coolant and the rotation speed of the water pump are determined by the controller. By setting up a leakage detection rope, leakage of each pipeline joint is detected to prevent other components from being corroded by the leakage. By setting up two water pumps, when one of the water pumps fails, the other water pump that is not faulty will start and operate. By setting up a filter, impurities in the coolant in the pipeline are filtered. By setting up a one-way valve, water cross-talk is prevented. By setting up a pH detector in the buffer water tank, when the pH value of the coolant changes, an abnormal alarm signal will be issued to remind the user to replace the coolant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following will describe a preferred embodiment in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of a liquid cooling device for a server.

[0021] Figure 1 It is a schematic diagram of the structure of the liquid cooling device used for the server in the present application under normal conditions.

[0022] Figure 2 It is a schematic diagram of the structure of the liquid cooling device used for the server in an abnormal state.

[0023] Figure 3 It is a block diagram of the control module of the present application.

[0024] Description of Figure Numbers:

[0025] 10: first liquid cooling module, 11: first pipeline, 111: first water delivery section, 113: second water delivery section, 1131: first heat exchange section, 115: third water delivery section, 13: three-way valve, 131: first channel, 1311: first interface, 133: second channel, 1331: second interface, 135: third channel, 1351: third interface, 15: water inlet, 17: water outlet, 20: second liquid cooling module, 21: second pipeline, 211: first water pipe section, 2111: main Channel, 2113: secondary pipeline, 213: second water pipe section, 215: second heat exchange section, 23: buffer water tank, 25: water pump assembly, 251: first water pump, 253: first one-way valve, 255: second water pump, 257: second one-way valve, 27: filter, 30: heat exchanger, 40: control module, 41: controller, 43: temperature sensor, 45: pressure sensor, 47: temperature and humidity sensor, 49: leakage detection rope, 8: server, 81: cabinet, 82: water cooling plate. DETAILED DESCRIPTION

[0026] In the description of the present application, it should be understood that the terms "front", "rear", "left side", "right side", "front end", "rear end", "end", "longitudinal", "lateral", "vertical", "top", "bottom", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a restriction on the present application.

[0027] As used herein, terms such as "first," "second," "third," "fourth," and "fifth" describe various elements, components, regions, levels, and / or portions, which should not be limited by these terms. These terms may only be used to distinguish one element, component, region, level, or portion from another. Unless the context clearly indicates otherwise, terms such as "first," "second," "third," "fourth," and "fifth" as used herein do not imply a sequence or order.

[0028] The detailed description and technical contents of the present application are described below with reference to the accompanying drawings. However, the drawings are only provided for reference and explanation and are not intended to limit the present application.

[0029] See also Figures 1 to 3 As shown, the present application provides a liquid cooling device for a server, wherein the server 8 mainly includes a cabinet 81 and a plurality of water cooling plates 82. The liquid cooling device of the present application can be embedded in the cabinet 81 to provide heat dissipation for each water cooling plate 82, and it mainly includes a first liquid cooling module 10, a second liquid cooling module 20 and a heat exchanger 30.

[0030] The first liquid cooling module 10 mainly includes a first pipeline 11 and a three-way valve 13. The first pipeline 11 mainly includes a first water delivery section 111, a second water delivery section 113 and a third water delivery section 115. The three-way valve 13 of this embodiment is an electromagnetic three-way valve, which is arranged between the first water delivery section 111, the second water delivery section 113 and the third water delivery section 115, and has a first channel 131, a second channel 133 and a third channel 135. The first channel 131 has a first interface 1311, the second channel 133 has a second interface 1331, and the third channel 135 has a third interface 1351.

[0031] One end of the first water delivery section 111 is connected to the first interface 1311 of the first channel 131, and the other end of the first water delivery section 111 is connected to a water inlet 15. One end of the second water delivery section 113 is connected to the second interface 1331 of the second channel 133, and the other end of the second water delivery section 113 is connected to a water outlet 17. One end of the third water delivery section 115 is connected to the third interface 1351 of the third channel 135, and the other end of the third water delivery section 115 is connected to the second water delivery section 113. The second water delivery section 113 has a first heat exchange section 1131, and the first heat exchange section 1131 is arranged on the second water delivery section 113. The water inlet 15 and the water outlet 17 are connected to an external liquid cooling device (not shown), so that low-temperature cooling liquid can be input from the water inlet 15.

[0032] The second liquid cooling module 20 is disposed on one side of the first liquid cooling module 10, and mainly includes a second pipeline 21, a buffer water tank 23, a water pump assembly 25 and a filter 27. The second pipeline 21 mainly includes a first water pipe section 211, a second water pipe section 213 and a second heat exchange section 215. One end of the first water pipe section 211 is connected to one end of each water cooling plate 82 of the server 8, and the other end of the first water pipe section 211 is connected to one end of the second heat exchange section 215. One end of the second water pipe section 213 is connected to the other end of each water cooling plate 82 of the server 8, and the other end of the second water pipe section 213 is connected to the other end of the second heat exchange section 215. The second heat exchange section 215 is disposed adjacent to the first heat exchange section 1131.

[0033] The buffer water tank 23, the water pump assembly 25 and the filter 27 are sequentially arranged on the first water pipe section 211. The water pump assembly 25 is between the buffer water tank 23 and the filter 27 and mainly includes a first water pump 251, a first one-way valve 253, a second water pump 255 and a second one-way valve 257. The first water pipe section 211 is divided into a main channel 2111 and a primary pipe 2113 after passing through the buffer water tank 23. The main channel 2111 is sequentially connected to the first water pump 251 and the first one-way valve 253, and the secondary pipe 2113 is sequentially connected to the second water pump 255 and the second one-way valve 257. The first water pipe section 211 is combined into one and connected to the filter 27 after passing through the water pump assembly 25.

[0034] The heat exchanger 30 of this embodiment is a plate heat exchanger, which is arranged between the first pipeline 11 and the second pipeline 21 and is used to provide heat exchange between the first pipeline 11 and the second pipeline 21; the heat exchanger 30 of the specific embodiment is arranged between the first heat exchange section 1131 of the first pipeline 11 and the second heat exchange section 215 of the second pipeline 21.

[0035] In one embodiment, the liquid cooling device for a server of the present application further includes a control module 40, which mainly includes a controller 41, a plurality of temperature sensors 43, a plurality of pressure sensors 45 and a temperature and humidity sensor 47, wherein the temperature sensors 43 of the present embodiment are five, and the pressure sensors 45 are two; each temperature sensor 43, each pressure sensor 45, the temperature and humidity sensor 47 and the three-way valve 13 are electrically connected to the controller 41, wherein four temperature sensors 43 are respectively arranged on the first water delivery section 111, the second water delivery section 113, the first water pipe section 211 and the second water pipe section 213, for sensing their temperature changes and transmitting them to the controller 41, and another temperature sensor 43 is arranged inside the cabinet 81 of the server 8.

[0036] The pressure sensors 45 are respectively arranged on the first water pipe section 211 and the second water pipe section 213 to detect the inlet and outlet pressures of the coolant entering the server 8. The controller 41 determines whether the flow rate of the coolant meets the heat dissipation requirements through the detection values, and whether the speed of the first water pump 251 or the second water pump 255 needs to be increased.

[0037] In one embodiment, the control module 40 also includes a liquid leakage detection rope 49, which is arranged on the first pipeline 11 and the second pipeline 21 and is electrically connected to the controller 41 to detect whether there is a leak at the connection point between the first pipeline 11 and the second pipeline 21, so as to prevent the various components in the server 8 from being corroded by the leaking liquid.

[0038] In addition, the water pump assembly 25 and the filter 27 are also electrically connected to the controller 41, wherein the first check valve 253 and the second check valve 257 are used to prevent water from flowing. When the first water pump 251 is in operation, if there is no check valve, the first water pump 251 and the second water pump 255 will form a closed loop with the buffer water tank 23, so that the flow of coolant entering the server 8 will be reduced, thereby causing the server 8 to be unable to be effectively cooled. In addition, the first water pump 251 and the second water pump 255 are operated in a patrol mode and will not operate continuously at the same time. When the first water pump 251 fails, a fault alarm signal will be issued, and the second water pump 255 without the fault will start and operate continuously. The filter 27 is used to filter impurities in the coolant in the second pipeline 21.

[0039] The buffer water tank 23 is equipped with a pH detector (not shown), which is electrically connected to the controller 41. When the pH value of the coolant supplied to the server 8 changes, an abnormal alarm signal is issued to remind the user to replace the coolant to prevent damage to the server 8.

[0040] When in use, the external low-temperature coolant enters the first water delivery section 111 from the water inlet end 15, and enters the first channel 131 from the first interface 1311, flows into the second water delivery section 113 from the second interface 1331 through the second channel 133, and exchanges heat with the second heat exchange section 215 through the heat exchanger 30 when reaching the first heat exchange section 1131. The high-temperature coolant will continue to flow along the second water delivery section 113 and flow out from the water outlet end 17; while the low-temperature coolant in the second pipeline 21 enters the main channel 2111 from the first water pipe section 211 through the buffer water tank 23, and enters each water cooling plate 82 after passing through the first water pump 251, the first one-way valve 253 and the filter 27 to reduce the temperature of each heating unit and increase the temperature of the coolant. The high-temperature coolant will continue to flow along the second water pipe section 213, and exchange heat with the first heat exchange section 1131 through the heat exchanger 30 when reaching the second heat exchange section 215, thereby reducing the temperature.

[0041] In a normal state, where "normal state" means that when each temperature sensor 43 detects that the temperature of the first pipeline 11 and the second pipeline 21 has not reached the temperature at which water droplets condense, the second channel 133 is connected to the first channel 131; in an abnormal state, where "abnormal state" means that when each temperature sensor 43 detects that the temperature of the first pipeline 11 and the second pipeline 21 has reached the temperature at which water droplets condense, the second channel 133 and the third channel 135 are connected to the first channel 131 at the same time; since the second channel 133 and the third channel 135 are connected to the first channel 131 at the same time, the temperature drop of the first heat exchange section 1131 is significantly reduced, so that the heat exchange amount with the second heat exchange section 215 is reduced, and the temperature of the second pipeline 21 is increased, so that water droplets will not condense in the second pipeline 21.

[0042] The above is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Other equivalent changes that apply the spirit of the present application should all fall within the scope of the present application. In addition, the present application may also have other unlisted embodiments. Without departing from the spirit and essence of the present application, a person skilled in the art should be able to evolve various corresponding changes and deformations based on the present application, but these corresponding changes and deformations should all fall within the scope of protection of the patent applied for by the present application.

Claims

1. A liquid cooling device for a server, characterized in that: include: A first liquid cooling module, comprising a first pipeline and a three-way valve disposed on the first pipeline, the three-way valve having a first channel, a second channel and a third channel; A second liquid cooling module is arranged on one side of the first liquid cooling module, and the second liquid cooling module includes a second pipeline; as well as a heat exchanger, disposed between the first pipeline and the second pipeline, and used to provide heat exchange between the first pipeline and the second pipeline; Wherein, in a normal state, the second channel is connected to the first channel, and in an abnormal state, the second channel and the third channel are simultaneously connected to the first channel; The heat exchange amount between the first pipeline and the second pipeline in the normal state is greater than the heat exchange amount between the first pipeline and the second pipeline in the abnormal state.

2. The liquid cooling device for a server as claimed in claim 1, wherein: The first pipeline includes a first water delivery section, a second water delivery section and a third water delivery section, and the three-way valve is arranged between the first water delivery section, the second water delivery section and the third water delivery section.

3. The liquid cooling device for a server as claimed in claim 2, characterized in that: The three-way valve has a first channel, a second channel and a third channel, the first channel has a first interface, the second channel has a second interface, the third channel has a third interface, one end of the first water delivery section is connected to the first interface, and the other end is connected to a water inlet end, one end of the second water delivery section is connected to the second interface, and the other end is connected to a water outlet end, one end of the third water delivery section is connected to the third interface, and the other end is connected to the second water delivery section.

4. The liquid cooling device for a server as claimed in claim 3, characterized in that: The second water delivery section has a first heat exchange section, the second pipeline includes a second heat exchange section, and the heat exchanger is arranged between the first heat exchange section and the second heat exchange section.

5. The liquid cooling device for a server as claimed in claim 1, wherein: The second liquid cooling module further includes a water pump assembly, the second pipeline includes a first water pipe section, and the water pump assembly is arranged on the first water pipe section.

6. The liquid cooling device for a server as claimed in claim 5, characterized in that: The water pump assembly includes a first water pump, a first one-way valve, a second water pump and a second one-way valve, the first water pipe section includes a main channel and a primary pipeline, the main channel is connected to the first water pump and the first one-way valve in sequence, and the secondary pipeline is connected to the second water pump and the second one-way valve in sequence.

7. The liquid cooling device for a server as claimed in claim 5, characterized in that: The second liquid cooling module further includes a buffer water tank, which is arranged on the first water pipe section.

8. The liquid cooling device for a server as claimed in claim 7, wherein: The second liquid cooling module further includes a filter, which is disposed on the first water pipe section, and the water pump assembly is located between the buffer water tank and the filter.

9. The liquid cooling device for a server as claimed in claim 1, wherein: It also includes a control module, which includes a controller and a plurality of temperature sensors. Each of the temperature sensors and the three-way valve is electrically connected to the controller, and each of the temperature sensors is arranged on the second pipeline.

10. The liquid cooling device for a server as claimed in claim 9, characterized in that: The control module further includes a plurality of pressure sensors, each of which is electrically connected to the controller. The second pipeline includes a first water pipe section and a second water pipe section connected to the first water pipe section. One of the pressure sensors is arranged on the first water pipe section, and the other pressure sensor is arranged on the second water pipe section.

11. The liquid cooling device for a server as claimed in claim 10, characterized in that: The control module further includes a temperature and humidity sensor, which is electrically connected to the controller. The server has a cabinet, and the temperature and humidity sensor is arranged in the cabinet.

12. The liquid cooling device for a server according to claim 11, wherein: The control module further includes a liquid leakage detection rope, which is electrically connected to the controller and is disposed on the first pipeline and the second pipeline.

13. The liquid cooling device for a server as claimed in claim 1, wherein: It also includes a control module, which includes a controller and multiple temperature sensors. Each temperature sensor is electrically connected to the three-way valve, and some of the temperature sensors are arranged on the first pipeline, while the other temperature sensors are arranged on the second pipeline.

14. The liquid cooling device for a server as claimed in claim 1, wherein: The second pipeline includes a first water pipe section, a second water pipe section and a second heat exchange section. The server has at least one water cooling plate. One end of the first water pipe section is connected to one end of the water cooling plate, and the other end is connected to one end of the second heat exchange section. One end of the second water pipe section is connected to the other end of the water cooling plate, and the other end is connected to the other end of the second heat exchange section.

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