Cabinet liquid cooling system

Abstract

The present application provides a cabinet liquid cooling system, comprising a plurality of servers, a liquid cooling device, a first branch pipe, a second branch pipe, an overflow pipe and a control valve. The servers, the liquid cooling device and at least one overflow pipe are connected to each other in parallel through the first branch pipe and the second branch pipe. The control valve comprises a first valve disc, a second valve disc, a pushed member and a resilient member. The first valve disc and the second valve disc are rotatably arranged in the overflow pipe. The opposite ends of the resilient member are fixed to the overflow pipe and the pushed member respectively. The resilient member is used to push the pushed member to abut between the first valve disc and the second valve disc to block the communication between the overflow pipe and the servers and the liquid cooling device. When the control valve bears a critical pressure, the pushed member overcomes the elastic force of the resilient member to move away from the first valve disc and the second valve disc, thereby making the overflow pipe communicate with the servers and the liquid cooling device.

Description

Technical Field

[0001] This invention relates to a cabinet liquid cooling system, and more particularly to a cabinet liquid cooling system comprising multiple servers. Background Technology

[0002] Generally, because multiple servers in a server rack generate a significant amount of heat, liquid cooling technology is typically used to cool these servers. In this setup, coolant flows between the servers and liquid cooling devices such as cooling distribution units (CDUs) to dissipate heat from the servers. Furthermore, the server inlet and outlet are connected via connectors with flow pipes to allow coolant to flow in and out of the servers.

[0003] However, when one server needs maintenance and is removed from the rack, more coolant flows into the other operating servers in the rack. This puts excessive pressure on the connectors at the inlets of the other operating servers. As a result, coolant may leak from the connectors. Summary of the Invention

[0004] The present invention provides a cabinet liquid cooling system to prevent coolant from leaking from the inlet of the server that is located in the other servers that continue to operate when some servers are removed for maintenance.

[0005] An embodiment of the present invention discloses a cabinet liquid cooling system comprising multiple servers, a liquid cooling device, a first manifold, a second manifold, at least one overflow pipe, and at least one control valve. Each server includes a first inlet and a first outlet. The first inlet is connected to the first outlet. The liquid cooling device includes a second inlet and a second outlet. The second inlet is connected to the second outlet. The second inlet is connected to the first outlet. The second outlet is connected to the first inlet. The first manifold and the second manifold connect each server and the liquid cooling device. The first inlet and the first outlet of each server are respectively connected to the first manifold and the second manifold. The second inlet and the second outlet of the liquid cooling device are respectively connected to the second manifold and the first manifold. The opposite ends of the at least one overflow pipe are respectively disposed on the first manifold and the second manifold. The servers, the liquid cooling device, and the at least one overflow pipe are connected to each other in parallel through the first manifold and the second manifold. The at least one control valve includes a first valve disc, a second valve disc, a pusher, and a spring. The first and second valve discs are rotatably disposed in at least one overflow pipe. The opposite ends of an elastic member are respectively fixed to the at least one overflow pipe and a pushed member. The elastic member pushes against the pushed member, causing the pushed member to abut against the first and second valve discs, thereby blocking the connection between the at least one overflow pipe and the server and the liquid cooling device. When the at least one control valve is subjected to a critical pressure, the pushed member overcomes the elastic force of the elastic member and moves away from the first and second valve discs, thereby connecting the at least one overflow pipe to the server and the liquid cooling device.

[0006] Preferably, the elastic element of the at least one control valve is a compression spring.

[0007] Preferably, the pushed member of the at least one control valve is spherical.

[0008] Preferably, it further includes a plurality of first flow tubes, a plurality of second flow tubes, a plurality of first connectors, and a plurality of second connectors. One end of each of the plurality of first flow tubes is connected to the first inlet of each of the plurality of servers and is installed on each of the plurality of servers through each of the plurality of first connectors. The other end of each of the plurality of first flow tubes is connected to the first manifold. One end of each of the plurality of second flow tubes is connected to the first outlet of each of the plurality of servers and is installed on each of the plurality of servers through each of the plurality of second connectors. The other end of each of the plurality of second flow tubes is connected to the second manifold. The plurality of first connectors includes a maximum withstand pressure. When the plurality of servers are connected to the liquid cooling device, the plurality of first connectors withstand an operating pressure. The critical pressure is less than the maximum withstand pressure and greater than the operating pressure.

[0009] Preferably, the diameter of the at least one overflow pipe is smaller than the diameter of the plurality of first flow pipes and the diameter of the plurality of second flow pipes.

[0010] Preferably, the opposite ends of the at least one overflow pipe are fixed to the first manifold and the second manifold in a non-removable manner.

[0011] Preferably, it further includes multiple overflow pipes and multiple control valves, the multiple control valves being respectively disposed in the multiple overflow pipes, and the multiple servers, the liquid cooling device and the multiple overflow pipes being connected to each other in parallel through the first manifold and the second manifold.

[0012] Preferably, the number of the plurality of overflow pipes is less than the number of the plurality of servers.

[0013] Preferably, the at least one overflow pipe includes an inlet end and an outlet end, the inlet end being connected to the first branch pipe, the outlet end being connected to the second branch pipe, and the at least one control valve being disposed at the inlet end of the at least one overflow pipe.

[0014] Preferably, the at least one overflow pipe is located between two adjacent servers among the plurality of servers.

[0015] According to the rack liquid cooling system disclosed in the above embodiments, the servers, liquid cooling unit, and overflow pipe are interconnected in parallel through a first manifold and a second manifold, and a control valve is disposed in the overflow pipe. Therefore, when none of the servers require maintenance, the control valve can be closed to prevent the server cooling operation from being affected by coolant flowing into the overflow pipe. When some servers need maintenance and are removed, the control valve can be opened to allow coolant to flow into the overflow pipe. In this way, the overflow pipe can share the coolant that would originally flow into the removed servers, thereby reducing the pressure on the connectors at the first inlet of the other continuously operating servers and preventing coolant leakage from the connectors.

[0016] Furthermore, when the control valve is subjected to critical pressure, the pushed component overcomes the elastic force of the elastic element and moves away from the first and second valve discs, thereby connecting the overflow pipe to the server and the liquid cooling device. Therefore, through the cooperation between the pushed component, the elastic element, the first valve disc, and the second valve disc, the opening or closing of the control valve can be adjusted without the need for maintenance personnel, which improves the ease of use of the cabinet liquid cooling system according to the present invention. Attached Figure Description

[0017] Figure 1 This is a side view of a cabinet liquid cooling system according to an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A partially enlarged side section view of the overflow pipe of the liquid cooling system in the cabinet.

[0019] Figure 3 To present Figure 1 A side view showing some servers in the cabinet's liquid cooling system being removed for maintenance.

[0020] Figure 4 To present Figure 1 A partially enlarged side cross-sectional view of the overflow pipe when some servers in the cabinet liquid cooling system were removed for maintenance.

[0021] Symbol explanation:

[0022] 10: Server rack liquid cooling system

[0023] 100: Server

[0024] 110: Chassis

[0025] 111: First Entrance

[0026] 112: First Exit

[0027] 113: Interior Space

[0028] 120: Motherboard

[0029] 130: Heat source

[0030] 140: Water cooling block

[0031] 200: Liquid cooling device

[0032] 210: Second Entrance

[0033] 220: Second Exit

[0034] 300: First bifurcation

[0035] 400:Second bifurcation

[0036] 500: Overflow pipe

[0037] 510: Inlet end

[0038] 520: Exit end

[0039] 600: Control valve

[0040] 610: First valve disc

[0041] 620: Second valve disc

[0042] 630: Pushed component

[0043] 640: Elastic component

[0044] 700: First-stage tube

[0045] 750: First Connector

[0046] 800: Second flow tube

[0047] 850: Second connector

[0048] D1, D2, D3: Pipe diameter Detailed Implementation

[0049] The following detailed description of the embodiments of the present invention outlines its features and advantages. This description is sufficient to enable anyone skilled in the art to understand the technical content of the embodiments of the present invention and to implement them accordingly. Furthermore, based on the disclosure, claims, and drawings in this specification, anyone skilled in the art can easily understand the related objectives and advantages of the present invention. The following embodiments are intended to further illustrate the points of the present invention, but are not intended to limit the scope of the invention in any way.

[0050] Please see Figure 1 and Figure 2 , Figure 1 This is a side view of a cabinet liquid cooling system according to an embodiment of the present invention. Figure 2 for Figure 1 This is a partially enlarged side sectional view of the overflow pipe of the cabinet liquid cooling system. In this embodiment, the cabinet liquid cooling system 10 includes multiple servers 100, a liquid cooling device 200, a first branch pipe 300, a second branch pipe 400, multiple overflow pipes 500, and multiple control valves 600. The cabinet liquid cooling system 10 is, for example, disposed in a cabinet (not shown).

[0051] It should be noted that since these servers 100 contain similar detailed structures and connections, the following only illustrates the detailed structure and connections of one server 100. In this embodiment, the server 100 includes a housing 110, a motherboard 120, a heat source 130, and a water-cooling head 140. The housing 110 includes a first inlet 111, a first outlet 112, and an internal space 113. The first inlet 111 is connected to the first outlet 112 through the internal space 113. The motherboard 120, the heat source 130, and the water-cooling head 140 are disposed in the internal space 113. The heat source 130 is disposed and electrically connected to the motherboard 120. The heat source 130 is, for example, a central processing unit or a graphics processing unit. The water-cooling head 140 is in thermal contact with the heat source 130.

[0052] The liquid cooling device 200 includes a second inlet 210 and a second outlet 220, and is, for example, a cooling distribution unit (CDU). The second inlet 210 is connected to the second outlet 220. The second inlet 210 is connected to the first outlet 112. The second outlet 220 is connected to the first inlet 111. More specifically, in this embodiment, the rack liquid cooling system 10 further includes a plurality of first flow pipes 700, a plurality of first connectors 750, a plurality of second flow pipes 800, and a plurality of second connectors 850. First branch pipes 300 are respectively connected to the first inlets 111 of the servers 100 through the first flow pipes 700. Second branch pipes 400 are respectively connected to the first outlets 112 of the servers 100 through the second flow pipes 800. The first branch pipes 300 and the second branch pipes 400 are disposed in the liquid cooling device 200 and are respectively connected to the second outlet 220 and the second inlet 210 of the liquid cooling device 200. One end of each first flow pipe 700 is connected to the first inlet 111 of each server 100 and is mounted to the housing 110 of each server 100 through each first connector 750. The other end of each first flow pipe 700 is connected to the first branch pipe 300. One end of each second flow pipe 800 is connected to the first outlet 112 of each server 100 and is mounted to the housing 110 of each server 100 through each second connector 850. The other end of each second flow pipe 800 is connected to the second branch pipe 400.

[0053] It should be noted that, for each server 100, the first flow pipe 700 and the second flow pipe 800 are connected to the water cooling head 140 of the server 100. That is, in this embodiment, "connected to the server 100" means connected to the water cooling head 140 of the server 100. Furthermore, it should be noted that, to avoid obscuring the focus of this invention, Figure 1 The specific manner in which the first flow tube 700 and the second flow tube 800 are connected to the water cooling head 140 in the internal space 113 of the server 100 is omitted.

[0054] Each overflow pipe 500 has its opposite ends connected to a first manifold 300 and a second manifold 400, respectively. The servers 100, liquid cooling units 200, and overflow pipes 500 are connected in parallel via the first manifold 300 and the second manifold 400. Control valves 600 are respectively installed in each overflow pipe 500. The servers 100, liquid cooling units 200, first manifold 300, second manifold 400, overflow pipes 500, first flow pipes 700, and second flow pipes 800 are used to supply a coolant (not shown), such as water.

[0055] In this embodiment, the opposite ends of each overflow pipe 500 are fixed to the first branch pipe 300 and the second branch pipe 400 in a non-removable manner, but this is not a limitation. In other embodiments, the opposite ends of each overflow pipe may also be fixed to the first branch pipe and the second branch pipe in a detachable manner.

[0056] In this embodiment, the number of overflow pipes 500 is less than the number of servers 100 to save on the overall manufacturing cost of the cabinet liquid cooling system 10, but this is not a limitation. In other embodiments, the number of overflow pipes may be greater than or equal to the number of servers.

[0057] In this embodiment, each overflow pipe 500 includes an inlet end 510 and an outlet end 520. The inlet end 510 is connected to a first branch pipe 300. The outlet end 520 is connected to a second branch pipe 400. Control valves 600 are respectively disposed at the inlet ends 510 of these overflow pipes 500. In other embodiments, the control valves may also be disposed at the outlet ends of the overflow pipes. In this embodiment, each overflow pipe 500 is located between two adjacent servers 100, but this is not a limitation. In other embodiments, the overflow pipes may also be located between the servers and the liquid cooling device.

[0058] Because these control valves 600 contain similar detailed structures and connections, the following description only illustrates the detailed structure and connections of one control valve 600. In this embodiment, as... Figure 2 As shown, the control valve 600 is disposed in the inlet end 510 of the overflow pipe 500 and includes a first valve disc 610, a second valve disc 620, a pusher member 630, and an elastic member 640. The first valve disc 610 and the second valve disc 620 are rotatably disposed in the overflow pipe 500. The opposite ends of the elastic member 640 are respectively fixed to the overflow pipe 500 and the pusher member 630. The elastic member 640 is used to push against the pusher member 630, so that the pusher member 630 abuts against the first valve disc 610 and the second valve disc 620, thereby blocking the communication between the overflow pipe 500 and the server 100 and the liquid cooling device 200.

[0059] In this embodiment, the elastic element 640 is, for example, a compression spring, but is not limited thereto. In other embodiments, the elastic element may also be a sheet spring. In this embodiment, the pushed element 630 is, for example, spherical, but is not limited thereto. In other embodiments, the pushed element may also be triangular. In other embodiments, the control valve may also be located at the outlet end of the overflow pipe.

[0060] Please see Figure 3 and Figure 4 , Figure 3 To present Figure 1A side view showing some servers in the cabinet's liquid cooling system being removed for maintenance. Figure 4 To present Figure 1 This is a partially enlarged side cross-sectional view of the overflow pipe in the liquid cooling system of the server rack, taken when some servers were removed for maintenance. Figure 3 and Figure 4 As shown, when a portion of the server 100 is removed, such that the first inlet 111 and first outlet 112 of this portion of the server 100 are no longer connected to the second outlet 220 and second inlet 210 of the liquid cooling device 200, respectively, the control valve 600 will experience a critical pressure. Therefore, the pushed member 630 will overcome the elastic force of the elastic member 640 and move away from the first valve disc 610 and the second valve disc 620, thereby connecting the overflow pipe 500 to the server 100 and the liquid cooling device 200. It should be noted that in this embodiment, the first connector 750 of the first inlet 111 of the server 100 housing 110 contains a maximum withstand pressure. When all of the servers 100 are connected to the liquid cooling device 200, the first connector 750 experiences an operating pressure. In this embodiment, the critical pressure is, for example, less than the maximum withstand pressure but greater than the operating pressure.

[0061] Please refer to it again. Figure 1 In this embodiment, the diameter D1 of each overflow pipe 500 is less than or equal to the diameter D2 of each first flow pipe 700 and the diameter D3 of each second flow pipe 800. In this way, when some of the servers 100 are removed, only a small amount of coolant will flow into the overflow pipe 500 without affecting the cooling operation of the remaining servers 100. However, in other embodiments, the diameter of each overflow pipe may be larger than the diameters of the first flow pipes and the second flow pipes.

[0062] It should be noted that in other embodiments, the cabinet liquid cooling system may also consist of only an overflow pipe and a control valve.

[0063] In this embodiment, the server 100 of the present invention can be used for artificial intelligence (AI) computing, edge computing, and can also be used as a 5G server, cloud server or vehicle networking server.

[0064] According to the rack liquid cooling system disclosed in the above embodiments, the servers, liquid cooling unit, and overflow pipe are interconnected in parallel through a first manifold and a second manifold, and a control valve is disposed in the overflow pipe. Therefore, when none of the servers require maintenance, the control valve can be closed to prevent the server cooling operation from being affected by coolant flowing into the overflow pipe. When some servers need maintenance and are removed, the control valve can be opened to allow coolant to flow into the overflow pipe. In this way, the overflow pipe can share the coolant that would originally flow into the removed servers, thereby reducing the pressure on the connectors at the first inlet of the other continuously operating servers and preventing coolant leakage from the connectors.

[0065] Furthermore, when the control valve is subjected to critical pressure, the pushed component overcomes the elastic force of the elastic element and moves away from the first and second valve discs, thereby connecting the overflow pipe to the server and the liquid cooling device. Therefore, through the cooperation between the pushed component, the elastic element, the first valve disc, and the second valve disc, the opening or closing of the control valve can be adjusted without the need for maintenance personnel, which improves the ease of use of the cabinet liquid cooling system according to the present invention.

[0066] Although the present invention has been disclosed above with reference to the foregoing embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention shall be determined by the claims appended to this specification.

Claims

1. A cabinet liquid cooling system, characterized in that, Include: Multiple servers, each of the multiple servers includes a first inlet and a first outlet, the first inlet being connected to the first outlet; A liquid cooling device includes a second inlet and a second outlet, the second inlet being connected to the second outlet, the second inlet being connected to a plurality of first outlets, and the second outlet being connected to a plurality of first inlets; A first branch pipe and a second branch pipe are connected to each of the plurality of servers and the liquid cooling device. The first inlet and the first outlet of each of the plurality of servers are respectively connected to the first branch pipe and the second branch pipe. The second inlet and the second outlet of the liquid cooling device are respectively connected to the second branch pipe and the first branch pipe. At least one overflow pipe, with its opposite ends respectively disposed on the first branch pipe and the second branch pipe, wherein the plurality of servers, the liquid cooling device, and the at least one overflow pipe are connected to each other in parallel through the first branch pipe and the second branch pipe; and At least one control valve includes a first valve disc, a second valve disc, a push member, and an elastic member. The first valve disc and the second valve disc are rotatably disposed in the at least one overflow pipe. The opposite ends of the elastic member are respectively fixed to the at least one overflow pipe and the push member. The elastic member is used to push against the push member, causing the push member to abut against the first valve disc and the second valve disc, thereby blocking the connection between the at least one overflow pipe and the plurality of servers and the liquid cooling device. When the at least one control valve is subjected to a critical pressure, the push member overcomes the elastic force of the elastic member and moves away from the first valve disc and the second valve disc, thereby connecting the at least one overflow pipe to the plurality of servers and the liquid cooling device.

2. The cabinet liquid cooling system as described in claim 1, characterized in that, The elastic element of the at least one control valve is a compression spring.

3. The cabinet liquid cooling system as described in claim 1, characterized in that, The pushed member of the at least one control valve is spherical.

4. The cabinet liquid cooling system as described in claim 1, characterized in that, It further includes multiple first flow tubes, multiple second flow tubes, multiple first connectors, and multiple second connectors. One end of each of the multiple first flow tubes is connected to the first inlet of each of the multiple servers and is installed on each of the multiple servers through each of the multiple first connectors. The other end of each of the multiple first flow tubes is connected to the first branch pipe. One end of each of the multiple second flow tubes is connected to the first outlet of each of the multiple servers and is installed on each of the multiple servers through each of the multiple second connectors. The other end of each of the multiple second flow tubes is connected to the second branch pipe. The multiple first connectors include a maximum withstand pressure. When the multiple servers are connected to the liquid cooling device, the multiple first connectors withstand an operating pressure. The critical pressure is less than the maximum withstand pressure and greater than the operating pressure.

5. The cabinet liquid cooling system as described in claim 4, characterized in that, The diameter of the at least one overflow pipe is smaller than the diameter of the plurality of first flow pipes and the diameter of the plurality of second flow pipes.

6. The cabinet liquid cooling system as described in claim 1, characterized in that, The two opposite ends of the at least one overflow pipe are fixed to the first branch pipe and the second branch pipe in a non-removable manner, respectively.

7. The cabinet liquid cooling system as described in claim 1, characterized in that, It also includes multiple overflow pipes and multiple control valves, with the multiple control valves respectively disposed in the multiple overflow pipes. The multiple servers, the liquid cooling device and the multiple overflow pipes are connected to each other in parallel through the first branch pipe and the second branch pipe.

8. The cabinet liquid cooling system as described in claim 7, characterized in that, The number of overflow pipes is less than the number of servers.

9. The cabinet liquid cooling system as described in claim 1, characterized in that, The at least one overflow pipe includes an inlet end and an outlet end, the inlet end being connected to the first branch pipe, the outlet end being connected to the second branch pipe, and the at least one control valve being disposed at the inlet end of the at least one overflow pipe.

10. The cabinet liquid cooling system as described in claim 1, characterized in that, The at least one overflow pipe is located between two adjacent servers among the plurality of servers.

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