TW202402144A - Rack liquid cooling system - Google Patents

Abstract

This disclosure provides a rack liquid cooling system including servers, a liquid cooling device, a first manifold, a second manifold, at least one overflow tube and at least one valve. Servers each have a first inlet and first outlet. The first inlet and first outlet are connected to each other. Liquid cooling device has a second inlet and a second outlet. The second inlet and second outlet are connected to each other. Second inlet is connected to first outlet. Second outlet is connected to first inlet. First and second manifolds are connected to each server and liquid cooling device. First inlet and outlet of each server are respectively connected to first and second manifold. Second inlet and outlet of liquid cooling device are respectively connected to second and first manifold. Two opposite ends of overflow tube are respectively disposed on first and second manifold. Servers, liquid cooling device and overflow tube are connected in parallel via first and second manifold. Valve is disposed on overflow tube.

Description

Cabinet liquid cooling system

The present invention relates to a cabinet liquid cooling system, and in particular to a cabinet liquid cooling system including multiple servers.

Generally speaking, since multiple servers in a rack generate a lot of heat, liquid cooling technology is often used to cool these servers in the rack. In such a situation, coolant will flow between the server and a liquid cooling device such as a Cooling Distribution Unit (CDU) to dissipate heat from the server. Furthermore, the inlet and outlet of the server are respectively provided with flow pipes through joints so that the coolant can flow into and out of the server.

However, when one of the servers needs to be repaired and is removed from the cabinet, more coolant will flow into the other servers that continue to operate in the cabinet, which causes the joints at the inlets of the other servers that continue to operate to Undergoing excessive stress. As a result, coolant may leak from the joint.

The present invention provides a cabinet liquid cooling system to prevent coolant from leaking from joints provided at the inlets of other servers that continue to operate when some servers are removed for maintenance.

A cabinet liquid cooling system disclosed in an embodiment of the present invention includes a plurality of servers, a liquid cooling device, a first manifold pipe, a second manifold pipe, at least one overflow pipe and at least one control valve. Each server includes a first entrance and a first exit. The first entrance is connected to the first exit. The liquid cooling device includes a second inlet and a second outlet. The second entrance is connected to the second exit. 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 pipe and the first manifold pipe. Opposite ends of at least one overflow pipe are respectively disposed on the first branch pipe and the second branch pipe. The server, the liquid cooling device and at least one overflow pipe are connected to each other in parallel through the first manifold pipe and the second manifold pipe. At least one control valve is disposed in at least one overflow pipe.

According to the cabinet liquid cooling system disclosed in the above embodiment, the server, the liquid cooling device and the overflow pipe are connected to each other in parallel through the first branch pipe and the second branch pipe, and the control valve is provided in the overflow pipe. Therefore, when the server does not need maintenance, the control valve can be closed to prevent the cooling operation of the server from being affected by the flow of coolant into the overflow pipe. When some of the servos are removed for maintenance, the control valve opens to allow coolant to flow into the overflow pipe. In this way, the overflow pipe can share the coolant that originally flows into the removed server, thereby reducing the pressure on the joint provided at the first inlet of the other servers that continue to operate, thereby preventing the coolant from flowing out. The connector is leaking.

Detailed features and advantages of the embodiments of the present invention are described in detail below in the implementation mode. The content is sufficient to enable anyone with ordinary knowledge in the art to understand the technical content of the embodiments of the present invention and implement them accordingly, and based on the disclosure of this specification With the content, patent scope and drawings, anyone with ordinary knowledge in the art can easily understand the relevant objects and advantages of the present invention. The following examples further illustrate the aspects of the present invention in detail, but do not limit the scope of the present invention in any way.

Please refer to FIG. 1 , which is a schematic side view of a cabinet liquid cooling system according to an embodiment of the present invention. In this embodiment, the cabinet liquid cooling system 10 includes a plurality of servers 100, a liquid cooling device 200, a first manifold 300, a second manifold 400, a plurality of overflow pipes 500 and a plurality of control valves 600. . The cabinet liquid cooling system 10 is, for example, installed in a cabinet (not shown).

It should be noted that since these servers 100 include similar detailed structures and connection relationships, only the detailed structure and connection relationships of one server 100 are illustrated below. In this embodiment, the server 100 includes a chassis 110, a motherboard 120, a heat source 130 and a water block 140. The casing 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 inner space 113 . The motherboard 120 , the heat source 130 and the water block 140 are disposed in the internal space 113 . The heat source 130 is provided and electrically connected to the motherboard 120 . The heat source 130 is, for example, a central processing unit or a graphics processor. The water block 140 is in thermal contact with the heat source 130 .

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 . Specifically, in this embodiment, the cabinet liquid cooling system 10 further includes a plurality of first flow pipes 700 , a plurality of first joints 750 , a plurality of second flow pipes 800 and a plurality of second joints 850 . The first manifold 300 is connected to the first inlet 111 of the servers 100 through the first flow pipes 700 respectively. The second manifold 400 is connected to the first outlets 112 of the servers 100 through the second flow tubes 800 respectively. The first manifold 300 and the second manifold 400 are provided in the liquid cooling device 200 and connected to the second outlet 220 and the second inlet 210 of the liquid cooling device 200 respectively. One end of each first flow pipe 700 is respectively connected to the first inlet 111 of each server 100 and is respectively installed on the chassis 110 of each server 100 through each first connector 750 . The other end of each first flow tube 700 is connected to the first manifold tube 300 . One end of each second flow pipe 800 is respectively connected to the first outlet 112 of each server 100 and is respectively installed on the chassis 110 of each server 100 through each second connector 850 . The other end of each second flow tube 800 is connected to the second manifold tube 400 .

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 to say, in this embodiment, being connected to the server 100 refers to being connected to the water block 140 of the server 100 . In addition, it should be noted that in order to avoid obscuring the focus of the present invention, the specific manner in which the first flow pipe 700 and the second flow pipe 800 are connected to the water-cooling head 140 in the internal space 113 of the server 100 is omitted in FIGS. 1 and 2 .

Opposite ends of each overflow pipe 500 are respectively disposed on the first bifurcated pipe 300 and the second bifurcated pipe 400 . The servers 100 , the liquid cooling devices 200 and the overflow pipes 500 are connected to each other in parallel through the first manifold pipe 300 and the second manifold pipe 400 . The control valves 600 are respectively disposed in the overflow pipes 500 . The server 100, the liquid cooling device 200, the first manifold 300, the second manifold 400, the overflow pipe 500, the first flow pipes 700 and the second flow pipes 800 are used to supply a cooling liquid such as water (not shown). (shown) flow.

In this embodiment, the opposite ends of each overflow pipe 500 are respectively fixed to the first manifold pipe 300 and the second manifold pipe 400 in a non-detachable manner, but it is not limited to this. In other embodiments, the opposite ends of each overflow pipe can also be detachably fixed to the first branch pipe and the second branch pipe respectively.

In this embodiment, the number of overflow pipes 500 is smaller than the number of servers 100 to save the overall manufacturing cost of the cabinet liquid cooling system 10 , but it is not limited to this. In other embodiments, the number of overflow pipes may be greater than or equal to the number of servers.

In this embodiment, each overflow pipe 500 includes an inlet end 510 and an outlet end 520 . The inlet end 510 is connected to the first manifold 300 . The outlet end 520 is connected to the second manifold 400 . Control valves 600 are respectively provided at the inlet ends 510 of these overflow pipes 500. In other embodiments, the control valves can also be respectively disposed at the outlet ends of the overflow pipes. In this embodiment, each overflow pipe 500 is located between two adjacent servers 100, but it is not limited to this. In other embodiments, the overflow tube can also be located between the server and the liquid cooling device.

In this embodiment, each control valve 600 is, for example, a manual valve and includes a valve body 610 and a handle 620 . The handle 620 is rotatably provided on the valve body 610 , and the valve body 610 is provided on the inlet end 510 of the overflow pipe 500 . In other embodiments, the valve body can also be disposed at the outlet end of the overflow pipe.

As shown in FIG. 1 , when the first inlet 111 and the first outlet 112 of each server 100 are respectively connected to the second outlet 220 and the second inlet 210 of the liquid cooling device 200 , the valve body 610 of the control valve 600 is used to The communication between the overflow pipe 500, the server 100 and the liquid cooling device 200 is blocked. Please refer to Figure 2. Figure 2 is a schematic side view showing that some servers in the cabinet liquid cooling system in Figure 1 have been removed for maintenance. As shown in FIG. 2 , when part of the server 100 is removed, the first inlet 111 and the first outlet 112 of this part of the server 100 are not connected to the second outlet 220 and the second inlet of the liquid cooling device 200 respectively. At 210 , the handle 620 of the control valve 600 can be rotated so that the overflow pipe 500 is connected to the other servers 100 and the liquid cooling device 200 through the valve body 610 .

Please refer to FIG. 1 again. In this embodiment, the diameter D1 of each overflow pipe 500 is smaller than the diameter D2 of each first flow pipe 700 and the pipe diameter D3 of each second flow pipe 800 . In this way, when part of the servers 100 is removed, only a small amount of cooling liquid will flow into the overflow pipe 500 without affecting the cooling operation of the remaining servers 100 that have not been removed. However, in other embodiments, the diameter of each overflow pipe may be greater than or equal to the diameter of each first flow pipe and the diameter of each second flow pipe.

It should be noted that in other embodiments, the cabinet liquid cooling system may only include an overflow pipe and a control valve.

In this embodiment, the server 100 of the present invention can be used for artificial intelligence (English: Artificial Intelligence, AI for short) computing, edge computing (edge computing), and can also be used as a 5G server, cloud server or Internet of Vehicles server. .

According to the cabinet liquid cooling system disclosed in the above embodiment, the server, the liquid cooling device and the overflow pipe are connected to each other in parallel through the first branch pipe and the second branch pipe, and the control valve is provided in the overflow pipe. Therefore, when the server does not need maintenance, the control valve can be closed to prevent the cooling operation of the server from being affected by the flow of coolant into the overflow pipe. When some of the servos are removed for maintenance, the control valve opens to allow coolant to flow into the overflow pipe. In this way, the overflow pipe can share the coolant that originally flows into the removed server, thereby reducing the pressure on the joint provided at the first inlet of the other servers that continue to operate, thereby preventing the coolant from flowing out. The connector is leaking.

Although the present invention has been disclosed in the foregoing embodiments, they are not intended to limit the present invention. Anyone skilled in the similar art can make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore, the present invention is The scope of patent protection for an invention shall be determined by the scope of the patent application attached to this specification.

10: Cabinet liquid cooling system 100:Server 110:Chassis 111:First entrance 112:First exit 113:Internal space 120: Motherboard 130:Heat source 140:Water block 200:Liquid cooling device 210:Second entrance 220:Second exit 300: First bifurcation 400:Second bifurcation 500: Overflow pipe 510: Entrance end 520:Exit end 600:Control valve 610: Valve body 620: handle 700: First-rate pipe 750:First joint 800: Second flow pipe 850:Second connector D1, D2, D3: pipe diameter

Figure 1 is a schematic side view of a cabinet liquid cooling system according to an embodiment of the present invention. FIG. 2 is a schematic side view showing that some servers in the cabinet liquid cooling system in FIG. 1 have been removed for maintenance.

10: Cabinet liquid cooling system

100:Server

110:Chassis

111:First entrance

112:First exit

113:Internal space

120: Motherboard

130:Heat source

140:Water block

200:Liquid cooling device

210:Second entrance

220:Second exit

300: First bifurcation

400:Second bifurcation

500: Overflow pipe

510: Entrance end

520:Exit end

600:Control valve

610: Valve body

620: handle

700: First-rate pipe

750:First joint

800: Second flow pipe

850:Second connector

D1, D2, D3: pipe diameter

Claims (10)

A cabinet liquid cooling system includes: a plurality of servers, each of the servers includes a first inlet and a first outlet, and the first inlet is connected to the first outlet; a 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 outlets, the second outlet is connected to the first inlets; a first manifold and a second manifold, Connecting each of the servers and the liquid cooling device, the first inlet and the first outlet of each of the servers are respectively connected to the first manifold pipe and the second manifold pipe, and the third manifold pipe of the liquid cooling device is connected. The two inlets and the second outlet are respectively connected to the second manifold pipe and the first manifold pipe; at least one overflow pipe, and the opposite ends of the at least one overflow pipe are respectively disposed on the first manifold pipe and the second manifold pipe. pipes, the servers, the liquid cooling device and the at least one overflow pipe are connected to each other in parallel through the first manifold pipe and the second manifold pipe; and at least one control valve is provided on the at least one overflow pipe Tube. The cabinet liquid cooling system described in claim 1 further includes a plurality of first flow pipes and a plurality of second flow pipes, one end of each of the first flow pipes is respectively connected to the first inlet of each of the servers, The other end of each of the first flow tubes is connected to the first manifold, and one end of each of the second flow tubes is connected to the first outlet of each of the servers. The other end is connected to the second manifold, and the diameter of the at least one overflow pipe is smaller than the diameter of the first flow tubes and the diameter of the second flow tubes. The cabinet liquid cooling system of claim 1, wherein opposite ends of the at least one overflow pipe are respectively fixed to the first manifold pipe and the second manifold pipe in a non-detachable manner. The cabinet liquid cooling system described in claim 1 further includes a plurality of overflow pipes and a plurality of control valves, and the control valves are respectively provided on the overflow pipes, the servers, the liquid cooling devices and the The overflow pipe is connected to each other in parallel through the first branch pipe and the second branch pipe. As for the cabinet liquid cooling system described in claim 4, the number of the overflow pipes is less than the number of the servers. The cabinet liquid cooling system as described in claim 1, wherein when the first inlet and the first outlet of each of the servers are connected to the second outlet and the second inlet of the liquid cooling device, the At least one control valve is used to block the communication between the at least one overflow pipe and the servers and the liquid cooling device. When part of the servers are removed, the third part of the servers When an inlet and the first outlet are not connected to the second outlet and the second inlet of the liquid cooling device respectively, the at least one control valve connects the at least one overflow pipe to the remaining servers and the liquid cooling device. cooling device. The cabinet liquid cooling system of claim 1, wherein the at least one overflow pipe includes an inlet end and an outlet end, the inlet end is connected to the first branch pipe, and the outlet end is connected to the second branch pipe. pipe, the at least one control valve is disposed at the inlet end of the at least one overflow pipe. The cabinet liquid cooling system of claim 1, wherein the at least one overflow pipe is located between two adjacent servers. The cabinet liquid cooling system of claim 1, wherein the at least one control valve includes a valve body and a handle, the handle is rotatably provided on the valve body, and the valve body is provided on the at least one overflow pipe. The cabinet liquid cooling system of claim 1, wherein the liquid cooling device is a cooling distribution unit.

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