Liquid cooling delivery conduit and cabinet server

Abstract

The application provides a liquid cooling transmission pipeline and a cabinet server, the liquid cooling transmission pipeline comprises a first hole and a second hole, further comprises a liquid supply pipeline, a liquid return pipeline, a connecting part, an input branch pipe and an output branch pipe, the liquid supply pipeline is provided with a first mounting part, the first hole penetrates the first mounting part and the pipe wall of the liquid supply pipeline, and a plurality of first holes are in communication with the passage of the liquid supply pipeline; the liquid return pipeline is provided with a second mounting part, the second hole penetrates the second mounting part and the pipe wall of the liquid return pipeline, and a plurality of second holes are in communication with the passage of the liquid return pipeline; the liquid supply pipeline and the liquid return pipeline are arranged in parallel and at intervals, the connecting part is connected between the liquid supply pipeline and the liquid return pipeline, and the connecting part, the liquid supply pipeline and the liquid return pipeline are integrally formed; the input branch pipe is in communication with the liquid supply pipeline, and the output branch pipe is in communication with the liquid return pipeline. The technical scheme of the application can adjust the structure of the transmission pipeline, reduce the processing difficulty of the liquid cooling transmission pipeline, and thus improve the yield of the liquid cooling transmission pipeline.

Description

Technical Field

[0001] This application relates to the field of liquid cooling, and more particularly to a liquid cooling transmission pipeline and a rack server. Background Technology

[0002] Currently, liquid cooling is the most common method for cooling server nodes. Liquid cooling typically involves a cold plate contacting the heat-generating components. The refrigerant within the cold plate carries away the heat from the components, and the heated refrigerant is then transported through distribution manifolds to a heat exchanger in the server room for heat exchange, allowing the refrigerant to circulate again. However, the welding process for multiple distribution manifolds is lengthy and prone to damage, leading to a lower yield rate. Summary of the Invention

[0003] The embodiments of this application provide a liquid-cooled transmission pipeline and a rack server, which can reduce the processing difficulty of the liquid-cooled transmission pipeline by adjusting the structure of the transmission pipeline, thereby improving the yield rate of the liquid-cooled transmission pipeline.

[0004] In a first aspect, this application provides a liquid-cooled transmission pipe, including a plurality of first holes and a plurality of second holes, and further comprising:

[0005] A liquid supply pipeline includes a first side surface, a first mounting portion is provided on the first side surface, a first hole penetrates the first mounting portion and the pipe wall of the liquid supply pipeline, and a plurality of first holes communicate with the channel of the liquid supply pipeline.

[0006] A return liquid pipe includes a second side surface, a second mounting portion is provided on the second side surface, a second hole penetrates the second mounting portion and the pipe wall of the return liquid pipe, and a plurality of second holes communicate with the channel of the return liquid pipe;

[0007] A connecting portion is provided where the supply pipe and the return pipe are arranged side-by-side at intervals, the connecting portion connects the supply pipe and the return pipe, and the connecting portion, the supply pipe, and the return pipe are integrally formed; and

[0008] An input branch pipe and an output branch pipe are provided, wherein the input branch pipe is connected to the liquid supply pipe and the output branch pipe is connected to the liquid return pipe;

[0009] The refrigerant can enter the liquid supply pipe from the input branch pipe and flow out through the multiple first holes of the liquid supply pipe. The refrigerant can also enter the return pipe from the multiple second holes and flow out of the liquid cooling transmission pipe through the output branch pipe.

[0010] It is understandable that providing a first hole in the liquid supply pipeline would weaken the structural stability of the pipeline. However, placing the first mounting portion on one side of the liquid supply pipeline increases the structural strength of the pipe wall on the side with the first hole. This embodiment of the application improves the structural stability of the liquid supply pipeline by adding a first mounting portion.

[0011] Similarly, providing a second hole in the return pipe weakens its structural stability. However, placing the second mounting portion on one side of the return pipe increases the structural strength of the pipe wall on the side with the second hole. This embodiment improves the structural stability of the return pipe by adding a second mounting portion.

[0012] The liquid supply pipe and liquid return pipe structure provided in this application embodiment are relatively stable, thus avoiding deformation or damage to the liquid supply pipe and liquid return pipe during the one-piece molding process, thereby improving the yield rate of liquid cooling transmission pipe production.

[0013] In one possible implementation, the connection portion forms an isolation channel with the liquid supply pipe and the liquid return pipe, and the isolation channel extends along the length of the liquid cooling transmission pipe.

[0014] Understandably, the isolation space contains air, which is an excellent insulating material. Therefore, the heat from the return pipe can be insulated by the air, preventing heat transfer from the return pipe to the supply pipe. This ensures that the refrigerant in the supply pipe can maintain a low temperature.

[0015] In one possible implementation, the liquid supply pipe is integrally formed with the first mounting part, and the liquid return pipe is integrally formed with the second mounting part.

[0016] Understandably, one-piece molding can save the assembly process of the first mounting part and the liquid supply pipe, and the second mounting part and the liquid return pipe, and improve the connection strength between the first mounting part and the liquid supply pipe, and the second mounting part and the liquid return pipe.

[0017] In one possible implementation, the cross-sectional shape of the liquid supply pipe and the cross-sectional shape of the liquid return pipe are circular;

[0018] The connecting part includes a first sub-part and a second sub-part, both of which are connected between the liquid supply pipe and the liquid return pipe. The first sub-part and the second sub-part are spaced apart and opposite to each other to form an isolation channel.

[0019] Understandably, the cross-sectional shape of a pipe's inner contour affects its hydraulic radius. The hydraulic radius is commonly used to calculate a pipe's water conveyance capacity. It is the ratio of the pipe's cross-sectional area to the length of the pipe's side in contact with the water (i.e., the wetted perimeter). Therefore, the refrigerant velocity in a pipe is related to the pipe's cross-sectional shape in the width direction. By changing the cross-sectional shape of the pipe's inner contour, the refrigerant velocity within the pipe can be controlled.

[0020] Furthermore, the cross-sectional shape of the pipe's outer contour can be customized according to the installation space requirements to adapt to different application scenarios.

[0021] In one possible implementation, the liquid supply pipe has a rectangular cross-sectional shape and includes a second wall; the liquid return pipe has a rectangular cross-sectional shape and includes a fifth wall; the second wall and the fifth wall are arranged opposite to each other along the width direction of the liquid cooling transmission pipe.

[0022] The connecting portion includes a first sub-portion, a second sub-portion, and a third sub-portion. The first sub-portion and the second sub-portion are both connected between the second wall and the fifth wall, and the first sub-portion and the second sub-portion are spaced apart from each other. The third sub-portion is connected between the first sub-portion and the second sub-portion, and the third sub-portion is spaced apart from the second wall and the fifth wall to form two isolation channels.

[0023] Understandably, square-shaped supply and return pipes are easier to manufacture, less expensive, and easier to process and modify. Furthermore, square tubes occupy less space; for the same cross-sectional area, the height of a square tube is less than that of a round tube. Therefore, using square shapes for the supply and return pipes allows the liquid cooling transmission pipeline to be applicable to a wider range of scenarios.

[0024] Setting the cross-sectional shape of the pipes (supply and return pipes) to square makes it easier to install the liquid cooling transmission pipes on pipe supports. When the cross-sectional shape is rectangular, the flow rate of the refrigerant in the pipe can be adjusted by changing the size of the rectangle.

[0025] In addition, the isolation space contains air, which is an excellent insulating material. Therefore, the heat from the return pipe can be insulated by the air, preventing heat transfer from the return pipe to the supply pipe. This ensures that the refrigerant in the supply pipe can maintain a low temperature.

[0026] In one possible implementation, the liquid supply pipe has a triangular cross-sectional shape and includes a second wall; the liquid return pipe has a triangular cross-sectional shape and includes a fifth wall; the second wall and the fifth wall are arranged opposite to each other along the width direction of the liquid cooling transmission pipe.

[0027] The connecting portion includes a first sub-portion and a second sub-portion, both of which are connected between the second wall and the fifth wall. The first sub-portion and the second sub-portion are spaced apart from each other to form an isolation channel.

[0028] It is understandable that when the cross-sectional shape of both the supply and return pipes is a triangle of equal size, the flow velocities within them are essentially the same. This results in the refrigerant experiencing the same resistance as it flows from the supply pipe into the cold plate as it does from the return pipe into the heat exchanger, allowing the refrigerant to circulate more smoothly within the liquid cooling assembly.

[0029] Additionally, when the cross-sectional shape of the pipe is triangular, the hydraulic radius of the supply and return pipes is smaller. The refrigerant experiences greater resistance within the pipe; therefore, when the refrigerant flow rate needs to be controlled at a low velocity, a triangular cross-sectional shape can be used.

[0030] In one possible implementation, the liquid supply pipe has a pentagonal cross-sectional shape and includes a second wall and a third wall connected to each other. The return pipe has a pentagonal cross-sectional shape and includes a seventh wall and an eighth wall connected to each other. Along the width direction of the liquid cooling transmission pipe, the second wall and the seventh wall are arranged opposite to each other, and the third wall and the eighth wall are arranged opposite to each other.

[0031] The connecting portion includes a first sub-part, a second sub-part, and a third sub-part. The first sub-part is connected between the second wall and the seventh wall. One end of the second sub-part is connected to the connection between the second wall and the third wall, and the other end of the second sub-part is connected to the connection between the seventh wall and the eighth wall. The second sub-part and the first sub-part are spaced apart and opposite each other to form a first isolation channel. The third sub-part is connected between the second wall and the seventh wall. The third sub-part and the second sub-part are spaced apart and opposite each other to form a second isolation channel.

[0032] It is understandable that when the supply and return pipes have pentagonal cross-sectional shapes, the hydraulic radii of the supply and return pipes in this embodiment are greater than those of pipes with triangular or rectangular cross-sectional shapes, given the same cross-sectional area. Therefore, in different application scenarios, different cross-sectional shapes of the supply and return pipes can be selected based on the required refrigerant flow rate.

[0033] Secondly, this application provides a rack server, including multiple server nodes, each of the server nodes including a cold plate, a connecting pipe and a liquid cooling transmission pipe as described above, the liquid cooling transmission pipe further including a first connector and a second connector, the connecting pipe including a first pipe and a second pipe, the first pipe and the second pipe being arranged side by side and extending in the same direction;

[0034] The first pipe includes a first end and a second end. The first end is connected to the liquid inlet of the cold plate, the second end is connected to one end of the first connector and communicates with the first connector, and the other end of the first connector is connected to the first hole.

[0035] The second pipe includes a third end and a fourth end. The third end is connected to the liquid outlet of the cold plate, the fourth end is connected to one end of the second connector and communicates with the second connector, and the other end of the second connector is connected to the second hole.

[0036] In one possible implementation, the number of first holes is the same as the number of second holes. When the number of server nodes is less than the number of first holes, the liquid cooling transmission pipe further includes a first connecting cap and a second connecting cap. The first holes not connected to any server node are sealed to the first connecting cap, and the second holes not connected to any server node are sealed to the second connecting cap. It is understood that since the liquid cooling heat dissipation pipe has multiple pairs of first and second holes, when the first and second holes are not in use, the first holes can be sealed with the first connecting cap to prevent leakage in the liquid supply line. The second holes are sealed with the second connecting cap to prevent leakage in the liquid return line.

[0037] In one possible implementation, each of the server nodes includes a chassis, a third connector, and a fourth connector. The chassis is provided with a first through hole and a second through hole. The third connector passes through the first through hole, and the fourth connector passes through the second through hole.

[0038] The third connector is connected to the second end of the first pipe, and the third connector is matched and connected with the first connector to form a quick connector.

[0039] The fourth connector is connected to the fourth end of the second pipe. The fourth connector is matched and connected with the second connector, and the fourth connector and the second connector cooperate to form a quick connector. Attached Figure Description

[0040] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of the rack server provided in an embodiment of this application;

[0042] Figure 2yes Figure 1 The diagram shown is a structural schematic of the server rack.

[0043] Figure 3 yes Figure 1 The diagram shows a structural schematic of a server node;

[0044] Figure 4 yes Figure 1 The diagram shows another type of server node structure.

[0045] Figure 5 yes Figure 1 A schematic diagram of a liquid-cooled transmission pipeline is shown.

[0046] Figure 6 yes Figure 5 A partial structural schematic diagram of the first embodiment of the liquid-cooled transmission pipeline shown;

[0047] Figure 7 yes Figure 6 The diagram shows the structural assembly of the liquid-cooled transmission pipeline, the first connector, and the second connector.

[0048] Figure 8 yes Figure 5 A partial structural schematic diagram of the second embodiment of the liquid-cooled transmission pipeline shown;

[0049] Figure 9 yes Figure 8 The diagram shows the assembly structure of the liquid-cooled transmission pipeline with the first and second joints.

[0050] Figure 10 yes Figure 5 A partial structural schematic diagram of the third embodiment of the liquid-cooled transmission pipeline shown;

[0051] Figure 11 yes Figure 10 The diagram shows the assembly structure of the liquid-cooled transmission pipeline with the first and second joints.

[0052] Figure 12 yes Figure 5 A partial structural schematic diagram of the fourth embodiment of the liquid-cooled transmission pipeline shown;

[0053] Figure 13 This application Figure 1 A diagram showing the refrigerant flow for the provided rack servers. Detailed Implementation

[0054] For ease of understanding, the terminology used in the embodiments of this application will be explained first.

[0055] And / or: This is simply a way of describing the relationship between related objects. It indicates that there can be three kinds of relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0056] Multiple: refers to two or more.

[0057] Connection: should be interpreted broadly. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through an intermediary.

[0058] The specific embodiments of this application will now be clearly described in conjunction with the accompanying drawings.

[0059] Server node: A high-performance computer that runs corresponding application software in a network environment, providing shared information resources and various services to online users. It offers various shared services and other applications to end users. A server includes a central processing unit, memory, hard disk, various buses, etc., and possesses high-speed computing power, long-term reliability, and powerful external data throughput capabilities.

[0060] The motherboard, also known as the hostboard, system board, or motherboard, connects all the components in a server. The motherboard is used to transmit various electronic signals and perform preliminary processing of some peripheral data.

[0061] BIOS (Basic Input Output System) chip: Contains the computer's basic input / output programs, power-on self-test (POST) program, and system startup program, providing the lowest-level and most direct hardware settings and control for the computer. The BIOS chip can also provide some system parameters to the operating system.

[0062] CPU (central processing unit): As the core of the information processing system for computation and control, it is the execution unit for information processing and program execution.

[0063] DIMM (Dual Inline Memory Module): A type of memory module. Memory modules provide operating space for information processing systems and software, and also temporarily store data processed by the CPU and data exchanged with external storage devices such as hard drives. The CPU can address memory and perform read and write operations on it via the data bus.

[0064] The PCH (Platform Controller Hub), also known as the Southbridge chip, processes low-speed signals and communicates with the CPU through the Northbridge chip. The Northbridge chip, located near the CPU, primarily controls data exchange between the AGP (Accelerated Graphics Port) graphics card, memory, and the CPU. The Southbridge chip, located near the PCI (Peripheral Component Interconnect) slots, primarily handles data exchange between the floppy drive, hard drive, keyboard, and add-on cards. The Southbridge and Northbridge chips are connected via the PCI bus, forming a motherboard chipset architecture.

[0065] GPU (graphics processing unit): A microprocessor used to perform image and graphics-related computations.

[0066] GPU card: Also known as a graphics card, it includes components such as GPU, video memory, circuit board, BIOS firmware, and the first fan.

[0067] Manifold: A flow distribution manifold, a pipe in a liquid cabinet for distributing fluids, enabling the function of distributing fluids from one source to multiple sources and combining multiple sources into one.

[0068] CDU (Coolant Distribution Unit): A unit that includes pumps, plate heat exchangers, etc. It is responsible for the power of the circulating flow on the server node side and the flow required by the liquid-cooled cabinet. At the same time, the plate heat exchanger isolates and exchanges heat between the liquid on the computer room side and the equipment side, and provides a certain temperature of refrigerant input to the liquid-cooled cabinet.

[0069] Please refer to the following: Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a rack server 1000 provided in an embodiment of this application. The rack server 1000 includes a rack 100, multiple server nodes 200, and a liquid-cooled transmission pipe 400. The multiple server nodes 200 and the liquid-cooled transmission pipe 400 are all installed on the rack 100. The liquid-cooled transmission pipe 400 can be a flow distribution manifold. The liquid-cooled transmission pipe 400 can distribute refrigerant to the multiple server nodes 200. For example, the multiple server nodes 200 can communicate with each other to transmit data.

[0070] In some other embodiments, the rack servers and heat exchanger 300 can form a server system. The heat exchanger 300 can be a coolant distribution unit (CDU). The heat exchanger 300 receives high-temperature refrigerant flowing from the outlet of the liquid-cooled transfer pipe 400, cools the refrigerant, and returns it to the inlet of the liquid-cooled transfer pipe 400, which then distributes the refrigerant to the server nodes 200. In practical use, multiple racks 100 can share a single heat exchanger 300. That is, a server system can include multiple rack servers 1000 and one heat exchanger 300. A single heat exchanger 300 can simultaneously exchange heat with multiple rack servers using liquid cooling media. Figure 1 The illustration of one cabinet 100 corresponding to one heat exchanger 300 is for informational purposes only.

[0071] Please see Figure 2 , Figure 2 yes Figure 1 The diagram shows the structure of the server rack 100. In one possible embodiment, the server rack 100 includes a mounting frame 110 and multiple slide rails 120. The slide rails 120 are connected to the mounting frame 110 and are spaced apart sequentially along the height of the mounting frame 110. Each slide rail 120 is used to connect a server node 200.

[0072] Specifically, the mounting bracket 110 includes a first side 111 and a second side 112 arranged opposite each other along the width direction, and a third side 113 and a fourth side 114 arranged opposite each other along the length direction. A slide rail 120 includes a first guide rail 121 and a second guide rail 122. The first guide rail 121 is mounted on the first side 111 of the mounting bracket 110. The second guide rail 122 is mounted on the second side 112 of the mounting bracket 110. The first guide rail 121 and the second guide rail 122 can be arranged opposite and parallel to each other along the width direction of the mounting bracket 110. There is an installation space between the oppositely arranged first guide rail 121 and second guide rail 122. Each installation space is used to accommodate a server node 200. The first guide rail 121 and the second guide rail 122 form a first insertion port on the third side 113, and the first guide rail 121 and the second guide rail 122 form a second insertion port on the fourth side 114.

[0073] In some other embodiments, unlike the embodiments described above, the rack 100 may include only the mounting bracket 110, without the slide rail 120. Multiple server nodes 200 can be directly mounted on the mounting bracket 110. This application does not limit the specific connection method between the server nodes and the rack. Figure 2 This is for illustrative purposes only.

[0074] The server node 200 in this embodiment includes ICT (information and communications technology) products. ICT products can refer to devices that enable people and organizations to access the digital world, including switches, routers, network transmission equipment, server nodes, etc. ICT products can have communication functions to realize data transmission; ICT products can also have data processing functions to analyze and process data.

[0075] Please see Figure 3 , Figure 3 yes Figure 1 The diagram shows a structural schematic of a server node 200. The server node 200 includes a chassis 210, a motherboard 220, a heating element 230, and a cold plate assembly 240. The chassis 210 has accommodating space. The motherboard 220, heating element 230, and cold plate assembly 240 are all connected within the chassis 210. The heating element 230 is electrically connected to the motherboard 220. The cold plate assembly 240 is in contact with the heating element 230.

[0076] It should be noted that, Figure 3 The purpose is merely to illustratively describe the connection relationship between the enclosure 210, motherboard 220, heating element 230, and cold plate assembly 240, and is not to specifically limit the connection position, specific structure, or quantity of each device. Furthermore, the structure illustrated in this application's embodiments does not constitute a specific limitation on the server node 200. In other embodiments of this application, the server node 200 includes... Figure 3 This may involve more or fewer components, or combining certain components, or splitting certain components, or different component arrangements. Figure 3 The components shown can be implemented in hardware, software, or a combination of both.

[0077] For example, the shape of the box 210 can be a cuboid. The box 210 includes six plates, which can be a first plate 211 and a second plate 212 arranged opposite each other along the thickness direction of the box 210, and a third plate 213, a fourth plate 214, a fifth plate 215, and a sixth plate 216 connected between the first plate 211 and the second plate 212. The third plate 213 and the fourth plate 214 are arranged opposite each other, and the fifth plate 215 and the sixth plate 216 are arranged opposite each other. The first plate 211, the second plate 212, the third plate 213, the fourth plate 214, the fifth plate 215, and the sixth plate 216 together enclose the internal space of the box 210.

[0078] For example, one or more of the six panels of the enclosure 210 may be a single-piece sheet metal structure, or a plate-like structure formed by stacking and / or splicing multiple sheets. The outer surfaces of the six panels of the enclosure 210 are the surfaces of the six panels facing the external power supply equipment of the enclosure 210. The outer surfaces of one or more of the six panels of the enclosure 210 may be flat, or may have raised structures and / or recessed structures, but are generally flat.

[0079] Please refer to the following: Figure 3 The housing 210 has a thickness H, a width W, and a length L. The first plate 211 and the second plate 212 are parallel to the width direction X and the length direction Y of the housing 210. The third plate 213 and the fourth plate 214 are parallel to the thickness direction Z and the width direction X of the housing 210. For ease of description below, the positive direction marked X is defined as the second direction, the negative direction marked Y as the first direction, and the positive direction marked Z as the third direction. The fifth plate 215 and the sixth plate 216 are parallel to the thickness direction Z and the length direction Y of the housing 210. The thickness H of the housing 210 is the distance between the outer surfaces of the first plate 211 and the second plate 212. The length L of the housing 210 is the distance between the outer surfaces of the third plate 213 and the fourth plate 214. The width W of the housing 210 is the distance between the outer surfaces of the fifth plate 215 and the sixth plate 216.

[0080] In one possible embodiment, the housing 210 is provided with a first sliding member 2151, a second sliding member (not shown), and a pipe through-hole 2141. The first sliding member 2151 is located on the outer surface of the fifth plate 215, and the second sliding member is located on the outer surface of the sixth plate 216. The first sliding member 2151 can be mounted on the first guide rail 121. The second sliding member can be mounted on the second guide rail 122. The first sliding member 2151 moves relative to the first guide rail 121, and the second sliding member moves relative to the second guide rail 122. The server node 200 is inserted through the first insertion port, allowing the server node 200 to be installed in the rack 100 or removed from the rack 100. The pipe through-hole 2141 is located on the fourth plate 214 and penetrates the fourth plate 214 along its thickness direction. For example, in some other embodiments, the pipe through hole 2141 may also be provided on the first plate 211, the second plate 212, the third plate 213, the fifth plate 215 or the sixth plate 216.

[0081] In this embodiment, the first guide rail 121 includes a guide groove that extends from the third side 113 of the mounting bracket 110 toward the fourth side 114. The first slider 2151 includes a slider that extends along the length of the housing 210. The guide groove can be connected to the slider, and the groove wall of the slider can guide the guide groove so that the guide groove and the slider slide together.

[0082] The motherboard 220 is connected to the internal space of the enclosure 210. In some embodiments, the motherboard 220 can be a rigid substrate. For example, the rigid substrate can be a copper-clad laminate (CCL). The material of the motherboard 220 can be selected based on requirements such as specifications, high-speed signals, current carrying capacity, and cost, and this application embodiment does not impose strict limitations on this.

[0083] In some other embodiments, the motherboard 220 may also be a flexible substrate. When the motherboard 220 is a flexible substrate, a reinforcing plate can provide rigid support for the flexible substrate. For example, the flexible substrate may be made of polyester materials such as polyimide. The reinforcing plate may be made of metal, polymer materials, inorganic non-metallic materials, etc., and the embodiments of this application are not strictly limited in this regard.

[0084] The heat-generating element 230 can be electrically connected to the motherboard 220. The heat-generating element 230 includes components such as the CPU, GPU, DIMM, and PCH.

[0085] Understandably, the heat-generating components 230 of the current server node 200 include the CPU, GPU, memory, and power supply chip, which will generate heat during the operation of the server node 200. Furthermore, the operation of these heat-generating components 230 is subject to strict temperature requirements to ensure the normal operation of the server node 200.

[0086] The cold plate assembly 240 includes a cold plate 241 and a connecting pipe 242. One end of the connecting pipe 242 is connected to the cold plate 241, and the connecting pipe 242 passes through a pipe through hole 2141 on the housing 210. The other end of the connecting pipe 242 is used to connect to the liquid cooling transmission pipe 400. Specifically, the cold plate 241 has a liquid cooling cavity, and an inlet and an outlet are provided in communication with the liquid cooling cavity. The inlet and outlet are located on the same side as the cold plate 241.

[0087] The connecting conduit 242 includes a first conduit 2421 and a second conduit 2422. The first conduit 2421 and the second conduit 2422 are arranged side-by-side and extend in the same direction. The outer sides of the first conduit 2421 and the second conduit 2422 are connected, or fixed by other fixing accessories, such as fixing rings. The first conduit 2421 includes a first end 2423 and a second end 2424, and the second conduit 2422 includes a third end 2425 and a fourth end 2426. The first end 2423 and the third end 2425 are located on the same side. The second end 2424 and the fourth end 2426 are located on the same side.

[0088] In one possible embodiment, the first end 2423 is connected to the liquid inlet of the cold plate 241. The first pipe 2421 passes through the pipe through-hole 2141 of the housing 210. The second end 2424 of the first pipe 2421 is used to communicate with the liquid cooling transmission pipe 400. The third end 2425 is connected to the liquid outlet of the cold plate 241. The second pipe 2422 passes through the pipe through-hole 2141 of the housing 210. The fourth end 2426 of the second pipe 2422 is used to communicate with the liquid cooling transmission pipe 400. The cold plate assembly 240 and the liquid cooling transmission pipe 400 together form the liquid cooling assembly in the rack server 1000.

[0089] Understandably, because the cold plate 241 is in contact with the heating element 230, the heat from the heating element 230 can be transferred to the cold plate 241. The refrigerant inside the cold plate 241 is transferred to the liquid cooling transmission pipe 400 through the connecting pipe 242, thereby exchanging heat with the heat exchanger 300. The refrigerant continuously carries away the heat from the cold plate 241. Therefore, the cold plate 241 can maintain its own low temperature. This allows the cold plate 241 to carry away a large amount of heat from the heating element 230 after contacting it. Consequently, the heating element 230 can operate below a certain temperature, ensuring the operational stability of the heating element 230.

[0090] In another possible embodiment, please refer to Figure 4 , Figure 4 yes Figure 1 The diagram shows another structural schematic of server node 200. Server node 200 also includes a third connector 250 and a fourth connector 260. The chassis of server node 200 has a first through hole 2142 and a second through hole 2143. Both the first through hole 2142 and the second through hole 2143 penetrate the fourth plate 214 along its thickness direction. The third connector 250 passes through the first through hole 2142, and the fourth connector 260 passes through the second through hole 2143. The second end 2424 of the first conduit 2421 is connected to the third connector 250. The fourth end 2426 of the second conduit 2422 is connected to the fourth connector 260.

[0091] For example, server node 200 may not use a cold plate 241 to cool heat-generating components. Instead, all components of server node 200 can be immersed in liquid coolant for heat dissipation. Housing 210 is provided with an inlet and an outlet for the liquid coolant. The liquid coolant can flow into housing 210 from the inlet or the outlet. The liquid coolant can be a two-phase coolant, such as a fluoride. In other embodiments, the coolant can also be a single-phase coolant, such as silicone oil.

[0092] Please refer to the following: Figure 1 The heat exchanger 300 includes a heat exchange body 310, a fifth connector 320, and a sixth connector 330. The heat exchange body 310 may have a refrigerant channel inside. The refrigerant can flow inside the heat exchange body 310. The heat exchange body 310 includes an inlet and an outlet. The fifth connector 320 is connected to the outlet of the heat exchange body 310, and the sixth connector 330 is connected to the inlet of the heat exchange body 310. The fifth connector 320 and the sixth connector 330 are connected to the same side of the heat exchange body 310. Both the fifth connector 320 and the sixth connector 330 communicate with the refrigerant channel inside the heat exchange body 310 and are used to communicate with the liquid cooling transmission pipe 400.

[0093] The heat exchanger 300 is located on the fourth side 114 of the mounting bracket 110. The side of the heat exchanger 300 with the fifth connector 320 and the sixth connector 330 is opposite to the fourth side 114 of the mounting bracket 110.

[0094] Please see Figure 5 , Figure 5 yes Figure 1 The diagram shows a structural schematic of a liquid-cooled transfer pipeline 400. The liquid-cooled transfer pipeline 400 includes a supply pipeline 413, a return pipeline 414, a connecting portion 417, an input branch pipe 440, and an output branch pipe 450. The supply pipeline 413, the return pipeline 414, and the connecting portion 417 are integrally formed. The input branch pipe 440 is connected to the supply pipeline 413. The output branch pipe 450 is connected to the return pipeline 414.

[0095] Specifically, the liquid-cooled transfer pipe 400 is provided with an inlet port (not shown) and an outlet port (not shown). The inlet port penetrates the wall of the supply pipe 413 in the Y-direction direction, and the outlet port penetrates the wall of the return pipe 414 in the Y-direction direction. An inlet branch pipe 440 is connected to the wall of the supply pipe 413 in the Y-direction direction and communicates with the inlet port. An outlet branch pipe 450 is connected to the wall of the return pipe 414 in the Y-direction direction and communicates with the outlet port.

[0096] In one possible implementation, the input branch pipe 440 is connected to the fifth connector 320 of the heat exchanger 300 via a hose. The output branch pipe 450 is connected to the sixth connector 330 of the heat exchanger 300 via a hose.

[0097] For example, along the width direction of the liquid-cooled transmission pipe 400, the supply pipe 413, the connecting part 417, and the return pipe 414 are arranged side by side. The supply pipe 413 is used to introduce low-temperature refrigerant flowing from the heat exchanger 300, and the return pipe 414 is used to draw out high-temperature refrigerant after heat exchange with the server node 200 installed in the rack 100. The supply pipe 413 and the return pipe 414 can be arranged in parallel. The cross-sectional shape of the supply pipe 413 and the cross-sectional shape of the return pipe 414 can be the same or different. It should be explained that the cross-section of the pipes (supply pipe 413 and return pipe 414) described in this application includes the cross-section of the inner contour of the pipe and the cross-section of the outer contour of the pipe. In this embodiment, the cross-sectional shape of the inner contour of the pipes (supply pipe 413 and return pipe 414) is substantially the same as the cross-sectional shape of the outer contour of the pipe. The shape of the cross-section described below in this application simultaneously represents the cross-sectional shape of the inner contour of the pipe and the cross-sectional shape of the outer contour of the pipe.

[0098] The connecting part 417 is connected between the liquid supply pipe 413 and the liquid return pipe 414. An isolation channel is formed between the connecting part and the liquid supply pipe 413 and the liquid return pipe 414.

[0099] Understandably, the supply pipe 413 allows refrigerant to flow from the heat exchanger 300 into the cold plate 241. The temperature of the refrigerant flowing into the supply pipe 413 is relatively low. The return pipe 414 allows refrigerant to flow from the cold plate 241 back into the heat exchanger 300. Therefore, the temperature of the refrigerant in the return pipe 414 is higher than that of the refrigerant in the supply pipe 413.

[0100] This application, by adding a connecting part 417 between the supply pipe 413 and the return pipe 414, and by using the connecting part 417 to separate the supply pipe 413 and the return pipe 414, can avoid a large amount of heat transfer between the supply pipe 413 and the return pipe 414, thereby allowing the refrigerant in the supply pipe 413 to maintain a lower temperature. It also avoids heat exchange between the supply pipe 413 and the return pipe 414 if their peripheral surfaces are directly connected, preventing a temperature rise in the refrigerant flowing from the supply pipe 413 into the cold plate 241. This ensures that the heat carried away by the refrigerant from the heating element 230 is reduced, preventing the heating element 230 from failing to dissipate heat effectively.

[0101] In some possible implementations, the supply pipe 413, the connector 417, and the return pipe 414 are made of aluminum alloy. Aluminum alloy has high strength (σb = 110–650 MPa), approaching that of high-alloy steel, and its stiffness exceeds that of steel. Furthermore, aluminum alloy possesses excellent casting and plastic processing properties. Therefore, using aluminum alloy to fabricate the integrally formed supply pipe 413, connector 417, and return pipe 414 results in a high yield rate during the manufacturing process. Additionally, the lightweight nature of aluminum alloy helps reduce the overall weight of the liquid cooling assembly.

[0102] The liquid supply pipe 413 has a first side 411 and a third side (not shown in the figure). Along the thickness direction of the liquid cooling transmission pipe 400, the first side 411 and the third side are arranged opposite to each other. The first side 411 faces the opposite direction of the Y direction. That is, the first side 411 faces the first direction, and the third side faces the positive direction of the Y direction. The liquid supply pipe 413 has a first mounting part 415, which is connected to the first side 411.

[0103] The return liquid pipe 414 has a second side 418 and a fourth side 419. Along the thickness direction of the liquid-cooled transfer pipe 400, the second side 418 and the fourth side 419 are arranged opposite to each other. The second side 418 faces the opposite direction of the Y direction; that is, it faces the first direction. The fourth side 419 faces the positive direction of the Y direction. The return liquid pipe 414 has a second mounting portion 416, which is connected to the second side 418.

[0104] The first mounting portion 415 and the second mounting portion 416 are arranged at intervals along the width direction of the liquid cooling transmission pipe 400. The first mounting portion 415 and the second mounting portion 416 extend along the length direction of the liquid cooling transmission pipe 400. For example, the first mounting portion 415 and the second mounting portion 416 are strip-shaped thin plates, and the first mounting portion 415 and the second mounting portion 416 are integrally formed with the liquid supply pipe 413 and the liquid return pipe 414.

[0105] The liquid-cooled transfer conduit 400 includes a plurality of first holes 4151 and a plurality of second holes 4161. The plurality of first holes 4151 are arranged at intervals along the length of the first mounting portion 415. Along the thickness direction of the first mounting portion 415, the first holes 4151 penetrate the wall of both the first mounting portion 415 and the liquid supply conduit 413. The first holes 4151 communicate with the channel of the liquid supply conduit 413. The plurality of first holes 4151 are sequentially spaced apart along the length of the first mounting portion 415.

[0106] Multiple second holes 4161 are arranged at intervals along the length of the second mounting portion 416. Along the thickness direction of the second mounting portion 416, the second holes 4161 penetrate the wall of both the second mounting portion 416 and the return pipe 414. The second holes 4161 communicate with the channel of the return pipe 414. The number of second holes 4161 is the same as the number of first holes 4151. Multiple second holes 4161 are sequentially spaced along the length of the second mounting portion 416.

[0107] When the first hole 4151 on the liquid-cooled transmission pipeline 400 needs to be connected to the server node 200, a first connector 420 can be provided on the liquid supply pipeline 413. The first connector 420 is located inside the first hole 4151 and is mutually restrained by the hole wall of the first hole 4151. The first connector 420 is connected to the input branch pipe 440. The number of first connectors 420 can be the same as the number of first holes 4151. When the first hole 4151 of the liquid-cooled transmission pipeline 400 does not need to be connected to the server node 200, the liquid-cooled transmission pipeline 400 can be provided with a first connecting cover 401. In actual use, the number of first connectors 420 is less than the number of first holes 4151, and the first hole 4151 without the first connector 420 connected can be sealed with the first connecting cover 401. For example, the material of the first connecting cover 401 can include stainless steel.

[0108] In some possible implementations, the first connector 420 is a quick connector. When the first conduit 2421 and the second conduit 2422 of the server node 200 pass directly through the housing 210, the first connector 420 directly connects to the second end 2424 of the first conduit 2421. Since the quick connector can connect or disconnect from the first conduit 2421 without tools, setting the first connector 420 as a quick connector simplifies the assembly process of the cold plate 241 and the liquid cooling transmission pipe 400.

[0109] It is understandable that providing a first hole 4151 for connection with the connector on the liquid supply pipe 413 will weaken the structural stability of the liquid supply pipe 413. Furthermore, the wall thickness of the side of the liquid supply pipe 413 with the first mounting portion 415 is greater than the wall thickness at other locations. By increasing the wall thickness of the side of the liquid supply pipe 413 with the first hole 4151, this portion of the wall is strengthened. This embodiment of the application improves the structural stability of the liquid supply pipe 413 by adding the first mounting portion 415, thereby increasing the mechanical strength of the liquid supply pipe 413.

[0110] When the second hole 4161 on the liquid-cooled transmission pipeline 400 needs to be connected to the server node 200, a second connector 430 can be provided on the return pipeline 414. The second connector 430 is located inside the second hole 4161 and is mutually restrained by the hole wall of the second hole 4161. The second connector 430 is connected to the output branch pipe 450. The number of second connectors 430 can be the same as the number of second holes 4161. When the first hole 4151 of the liquid-cooled transmission pipeline 400 does not need to be connected to the server node 200, the liquid-cooled transmission pipeline 400 can be provided with a second connecting cover 402. In actual use, the number of second connectors 430 is less than the number of second holes 4161, and the second hole 4161 without the second connector 430 connected can be sealed with the second connecting cover 402.

[0111] In some possible implementations, the second connector 430 is a quick connector. When the first conduit 2421 and the second conduit 2422 of the server node 200 pass directly through the housing 210, the second connector 430 directly connects to the fourth end 2426 of the second conduit 2422. Since the quick connector can connect or disconnect from the second conduit 2422 without tools, setting the second connector 430 as a quick connector simplifies the assembly process of the cold plate 241 and the liquid cooling transmission pipe 400.

[0112] It is understandable that providing a second hole 4161 on the return pipe 414 to connect with the second connector 430 would weaken the structural stability of the return pipe 414. Furthermore, the wall thickness of the side of the return pipe 414 with the second mounting portion 416 is greater than the wall thickness at other locations. By increasing the wall thickness of the side of the return pipe 414 with the second hole 4161, this portion of the wall is strengthened. This embodiment of the application improves the structural stability of the return pipe 414 by adding the second mounting portion 416415, thereby increasing the mechanical strength of the return pipe 414.

[0113] In some possible implementations, unlike the previous one, server node 200 is equipped with the third connector 250 and fourth connector 260 described above. When the liquid cooling transmission pipe 400 is mounted outside the rack 100 and fixedly connected to the rear side of the mounting bracket 110, the position of the first connector 420 of the liquid cooling transmission pipe 400 corresponds to the position of the third connector 250 of the enclosure 210. The position of the second connector 430 of the liquid cooling transmission pipe 400 corresponds to the position of the fourth connector 260 of the enclosure 210. The enclosure 210 can slide from the front to the rear of the rack 100. When the third connector 250 and fourth connector 260 connected to the enclosure 210 are close to the first connector 420 and the second connector 430, the third connector 250 can directly blind-mating with the first connector 420. The third connector 250 and the first connector 420 are mated and connected, forming a quick connector. The fourth connector 260 can directly blind-mating with the second connector 430. The fourth connector 260 is matched and connected with the second connector 430, and the fourth connector 260 and the second connector 430 cooperate to form a quick connector.

[0114] For example, the connection between the first connector 420 and the third connector 250 can be either blind-plug or manual-plug. The connection between the second connector 430 and the fourth connector 260 can also be either blind-plug or manual-plug.

[0115] Understandably, when the space between the server node 200 and the liquid cooling transmission pipe 400 is small or virtually nonexistent, it is difficult for operators to securely connect the first connector 420 to the third connector 250, and the second connector 430 to the fourth connector 260 within this gap. The first connector 420 provided in this application can be blind-molded with the third connector 250, and the second connector 430 can be blind-molded with the fourth connector 260. Therefore, during the server installation process in the rack 100, the first connector 420 and the third connector 250, and the second connector 430 and the fourth connector 260 can be directly and securely connected. This simplifies the connection method between the server node 200 and the liquid cooling transmission pipe 400.

[0116] Liquid cooling transfer pipe 400 is connected to cabinet 100. One end of input branch pipe 440 is connected to liquid supply pipe 413. The other end of input branch pipe 440 is connected to the fifth connector 320 of heat exchanger 300 via a flexible hose. One end of output branch pipe 450 is connected to return liquid pipe 414, and the other end of output branch pipe 450 is connected to the sixth connector 330 of heat exchanger 300 via a flexible hose.

[0117] It is known that the cross-sectional shape of the pipe (supply pipe 413 or return pipe 414) affects the size of the hydraulic radius. The hydraulic radius is often used to calculate the water conveyance capacity of a pipe. The hydraulic radius refers to the ratio of the flow area of ​​the pipe's water conveyance section to the length of the pipe's side in contact with the water (i.e., the wetted perimeter). Therefore, the flow velocity of the refrigerant in the pipe is related to the cross-sectional shape of the pipe in the width direction. Based on this, embodiments of this application also provide various supply pipes 413 and return pipes 414 with different cross-sectional shapes to adapt to different application scenarios. Among them, the cross-sectional shapes of the supply pipe 413 and return pipe 414 provided in embodiments of this application can be the same.

[0118] It is understandable that when the cross-sectional shapes of the inner contours of the supply pipe 413 and the return pipe 414 are the same, the flow velocities within the supply pipe 413 and the return pipe 414 are essentially the same. This results in the refrigerant experiencing the same resistance as it flows from the supply pipe 413 into the cold plate 241 as it does from the return pipe 414 into the heat exchanger 300, allowing the refrigerant to circulate more smoothly within the liquid cooling assembly.

[0119] In addition, the cross-sectional shape of the outer contour of the liquid supply pipe 413 and the liquid return pipe 414 can be set according to the requirements of the installation space to adapt to different application scenarios.

[0120] In the first possible embodiment, please refer to [reference needed]. Figure 6 and Figure 7 , Figure 6 yes Figure 5 A partial structural schematic diagram of the first embodiment of the liquid-cooled transmission pipeline 400 shown. Figure 7 yes Figure 6 The diagram shows the structural arrangement of the liquid-cooled transmission pipe 400, the first connector 420, and the second connector 430. The supply pipe 413 and the return pipe 414 both have rectangular cross-sections in the width direction. The supply pipe 413 includes a first wall 4131, a second wall 4132, a third wall 4133, and a fourth wall 4134 connected in sequence. The first wall 4131 and the third wall 4133 are arranged opposite each other in the thickness direction of the liquid-cooled transmission pipe 400. The second wall 4132 and the fourth wall 4134 are arranged opposite each other in the width direction of the liquid-cooled transmission pipe 400. The return pipe 414 includes a fifth wall 4141, a sixth wall 4142, a seventh wall 4143, and an eighth wall 4144 connected in sequence. The fifth wall 4141 and the seventh wall 4143 are arranged opposite each other in the thickness direction of the liquid-cooled transmission pipe 400. The sixth wall 4142 and the eighth wall 4144 are arranged opposite each other in the width direction of the liquid-cooled transmission pipe 400.

[0121] The first wall 4131 and the fifth wall 4141 are located on the same side. The first wall 4131 is the wall of the supply pipe 413 facing the first direction, and the fifth wall 4141 is the wall of the return pipe 414 facing the second direction. The second wall 4132 and the sixth wall 4142 are located opposite each other. The third wall 4133 and the seventh wall 4143 are located on the same side. The third wall 4133 is the wall of the supply pipe 413 facing the positive Y direction, and the seventh wall 4143 is the wall of the return pipe 413 facing the positive Y direction. The fourth wall 4134 and the eighth wall 4144 are located opposite each other.

[0122] The first mounting part 415 is located on the outer surface of the first wall 4131 of the liquid supply pipe 413. The outer surface of the first wall 4131 is also the first side surface 411 of the liquid supply pipe 413 described above. The second mounting part 416 is connected to the outer surface of the fifth wall 4141 of the return pipe 414. The outer surface of the fifth wall 4141 is also the second side surface 418 of the return pipe 414 described above.

[0123] The connecting portion 417 may include a first sub-portion 4171, a second sub-portion 4172, and a third sub-portion 4173. The first sub-portion 4171 is connected between the second wall 4132 and the sixth wall 4142. The second sub-portion 4172 is connected between the second wall 4132 and the sixth wall 4142. The third sub-portion 4173 is connected between the first sub-portion 4171 and the second sub-portion 4172. The first sub-portion 4171 and the second sub-portion 4172 are spaced apart and opposite to each other. The third sub-portion 4173 is spaced apart and opposite to both the second wall 4132 and the sixth wall 4142.

[0124] A portion of the first sub-section 4171, the second sub-section 4172, a portion of the third sub-section 4173, and the second wall 4132 together form a first isolation channel A. A portion of the first sub-section 4171, the third sub-section 4173, a portion of the second sub-section 4172, and the sixth wall 4142 together form a second isolation channel B. The first isolation channel A and the second isolation channel B extend along the length of the liquid cooling transmission pipe 400.

[0125] The input branch pipe 440 is connected to the outer surface of the third wall 4133. The output branch pipe 450 is connected to the outer surface of the seventh wall 4143.

[0126] Additionally, the first isolation channel A and the second isolation channel B can serve as thermal insulation spaces between the supply pipe 413 and the return pipe 414. Since the first isolation channel A contains air, which is an excellent insulating material, the heat from the return pipe 414 can be insulated by the air, thus preventing heat transfer from the return pipe 414 to the supply pipe 413. This ensures that the refrigerant in the supply pipe 413 can maintain a low temperature.

[0127] For example, please refer to Figure 5The ends of the return pipe 414 and the supply pipe 413 may also be provided with inspection through holes 403. The inspection through hole 403 penetrates the end of the supply pipe 413. During the production process of the liquid-cooled transfer pipe 400, the inspection through hole 403 can be used for an endoscope to pass through, and the endoscope can observe whether the inner wall of the pipe (supply pipe 413 or return pipe 414) is clean.

[0128] In the second possible embodiment, please refer to Figure 8 and Figure 9 , Figure 8 yes Figure 5 A partial structural schematic diagram of a second embodiment of the liquid-cooled transmission pipe 400 shown. Figure 9 yes Figure 8 The diagram shows the assembly of the liquid-cooled transmission pipe 400 with the first connector 420 and the second connector 430. Unlike the first embodiment, the cross-sectional shape of both the supply pipe 413 and the return pipe 414 in the width direction is circular. For ease of description, in this embodiment, the pipe wall of the supply pipe 413 is divided into a first wall 4131, a second wall 4132, a third wall 4133, and a fourth wall 4134 connected sequentially. The outer surface of the first wall 4131 is the first side surface 411 mentioned above. The outer surface of the third wall 4133 is the third side surface 412 mentioned above. The first wall 4131 and the third wall 4133 are arranged opposite each other in the thickness direction of the liquid-cooled transmission pipe 400. The second wall 4132 and the fourth wall 4134 are arranged opposite each other in the width direction of the liquid-cooled transmission pipe 400.

[0129] It should be noted that, since the cross-sectional shape of the liquid supply pipe 413 is circular, the pipe wall of the liquid supply pipe 413 is cylindrical. The first wall 4131, the second wall 4132, the third wall 4133, and the fourth wall 4134 are all partial avoidances of the cylindrical liquid supply pipe 413. The first wall 4131, the second wall 4132, the third wall 4133, and the fourth wall 4134 do not have obvious boundaries in the actual product.

[0130] In this embodiment, the wall of the return pipe 414 is divided into a fifth wall 4141, a sixth wall 4142, a seventh wall 4143, and an eighth wall 4144 connected sequentially. The outer surface of the fifth wall 4141 is also the second side surface 418 described above. The outer surface of the seventh wall 4143 is also the fourth side surface 419 described above. The fifth wall 4141 and the seventh wall 4143 are arranged opposite each other in the thickness direction of the liquid cooling transmission pipe 400. The sixth wall 4142 and the eighth wall 4144 are arranged opposite each other in the width direction of the liquid cooling transmission pipe 400. It should be noted that the supply pipe 413 has a circular cross-sectional shape. Therefore, the wall of the liquid supply pipe 413 is cylindrical. The fifth wall 4141, the sixth wall 4142, the seventh wall 4143 and the eighth wall 4144 are all parts of the cylindrical liquid supply pipe 413. The fifth wall 4141, the sixth wall 4142, the seventh wall 4143 and the eighth wall 4144 do not have obvious boundaries in the actual product.

[0131] The first wall 4131 and the fifth wall 4141 are located on the same side. The second wall 4132 and the sixth wall 4142 are located opposite each other. The third wall 4133 and the seventh wall 4143 are located on the same side. The fourth wall 4134 and the eighth wall 4144 are located opposite each other.

[0132] The first mounting part 415 is located on the outer surface of the first wall 4131 of the liquid supply pipe 413. The second mounting part 416 is connected to the outer surface of the fifth wall 4141 of the liquid return pipe 414.

[0133] The connecting portion 417 may include a first sub-portion 4171 and a second sub-portion 4172. The first sub-portion 4171 is connected between the second wall 4132 and the sixth wall 4142. The second sub-portion 4172 may be connected between the second wall 4132 and the sixth wall 4142. The first sub-portion 4171 and the second sub-portion 4172 are spaced apart from each other.

[0134] The first sub-section 4171, the second wall 4132, the second sub-section 4172, and the sixth wall 4142 are connected in sequence and together form the first isolation channel A. The first isolation channel A extends along the length of the liquid cooling transmission pipeline 400.

[0135] The input branch pipe 440 is connected to the outer surface of the third wall 4133. The output branch pipe 450 is connected to the outer surface of the seventh wall 4143.

[0136] It's understandable that the hydraulic radius equals the cross-sectional area divided by the wetted perimeter (circumference of the cross-section). For pipes with the same cross-sectional area, a larger hydraulic radius results in a higher flow velocity. A larger hydraulic radius means less contact between the fluid and the pipe wall, and less resistance from the pipe wall to the refrigerant, thus increasing the refrigerant's flow capacity. To achieve the maximum refrigerant velocity within the pipe, the pipe's cross-sectional shape can be made circular.

[0137] Additionally, the first isolation channel A serves as a thermal insulation space between the supply pipe 413 and the return pipe 414. Since the first isolation channel A contains air, which is an excellent insulating material, the heat from the return pipe 414 can be insulated by the air, thus preventing heat transfer from the return pipe 414 to the supply pipe 413. This ensures that the refrigerant in the supply pipe 413 can maintain a low temperature.

[0138] In the third possible embodiment, please refer to Figure 10 and Figure 11 , Figure 10 yes Figure 5 A partial structural schematic diagram of the third embodiment of the liquid-cooled transmission pipeline 400 shown. Figure 11 yes Figure 10 The diagram shows the assembly of the liquid-cooled transmission pipe 400 with the first connector 420 and the second connector 430. Unlike the first embodiment, the cross-sectional shape of both the supply pipe 413 and the return pipe 414 in the width direction is triangular. The supply pipe 413 includes a first wall 4131, a second wall 4132, and a third wall 4133 connected together. The outer surface of the first wall 4131 is the first side surface 411 described above, and the outer surface of the second wall 4132 is the third side surface 412 described above.

[0139] The return pipe 414 includes a fourth wall 4134, a fifth wall 4141, and a sixth wall 4142 connected to each other. The first wall 4131 and the fourth wall 4134 are both located on the same side facing the thickness direction of the liquid-cooled transfer pipe 400. The second wall 4132 and the fifth wall 4141 are located opposite each other. The third wall 4133 and the sixth wall 4142 are located opposite each other. The outer surface of the fourth wall 4134 is also the second side surface 418 described above, and the outer surface of the fifth wall 4141 is also the fourth side surface 419 described above.

[0140] The first mounting part 415 is connected to the outer surface of the first wall 4131 of the liquid supply pipe 413. The second mounting part 416 is connected to the outer surface of the fourth wall 4134 of the liquid return pipe 414.

[0141] The connecting portion 417 includes a first sub-portion 4171 and a second sub-portion 4172. The first sub-portion 4171 is connected between the second wall 4132 and the fifth wall 4141. The second sub-portion 4172 is connected between the second wall 4132 and the fifth wall 4141. The first sub-portion 4171 and the second sub-portion 4172 are spaced apart and opposite to each other.

[0142] The first sub-section 4171, the second wall 4132, the second sub-section 4172, and the fifth wall 4141 together form the first isolation channel A. The first isolation channel A extends along the length of the liquid cooling transmission pipeline 400.

[0143] The input branch pipe 440 can be connected to the outer surface of the second wall 4132, and the output branch pipe 450 can be connected to the outer surface of the fifth wall 4141.

[0144] Additionally, the first isolation channel A serves as a thermal insulation space between the supply pipe 413 and the return pipe 414. Since the first isolation channel A contains air, which is an excellent insulating material, the heat from the return pipe 414 can be insulated by the air, thus preventing heat transfer from the return pipe 414 to the supply pipe 413. This ensures that the refrigerant in the supply pipe 413 can maintain a low temperature.

[0145] For the fourth possible implementation, please refer to Figure 12 , Figure 12 yes Figure 5 The diagram shows a partial structural schematic of a fourth embodiment of the liquid-cooled transfer pipe 400. Unlike the first possible embodiment, both the supply pipe 413 and the return pipe 414 have pentagonal cross-sectional shapes in the width direction. The supply pipe 413 includes a first wall 4131, a second wall 4132, a third wall 4133, a fourth wall 4134, and a fifth wall 4141 connected sequentially. The outer surface of the first wall 4131 is the first side surface 411 described above, and the outer surface of the fourth wall 4134 is the third side surface 412 described above.

[0146] The return pipe 414 includes a sixth wall 4142, a seventh wall 4143, an eighth wall 4144, a ninth wall 4145, and a tenth wall 4146 connected in sequence. Among them, the first wall 4131 and the sixth wall 4142 are both arranged in the thickness direction of the liquid cooling transfer pipe 400.

[0147] The second wall 4132 and the third wall 4133 face the return pipe 414. The fourth wall 4134 and the fifth wall 4141 face away from the return pipe 414. The seventh wall 4143 and the eighth wall 4144 of the return pipe 414 face the supply pipe 413, and the ninth wall 4145 and the tenth wall 4146 of the return pipe 414 face away from the supply pipe 413. The outer surface of the sixth wall 4142 is the second side surface 418 mentioned above, and the outer surface of the ninth wall is the third side surface 412 mentioned above.

[0148] The first mounting part 415 is connected to the outer surface of the first wall 4131. The second mounting part 416 is connected to the outer surface of the sixth wall 4142.

[0149] The connecting portion 417 includes a first sub-portion 4171, a second sub-portion 4172, and a third sub-portion 4173. All three sub-portions extend along the length of the liquid-cooled transfer pipe 400. The first sub-portion 4171 connects between the second wall 4132 and the seventh wall 4143. One end of the second sub-portion 4172 connects to the junction of the second wall 4132 and the third wall 4133, and the other end connects to the junction of the seventh wall 4143 and the eighth wall 4144. The first sub-portion 4171 and the second sub-portion 4172 are spaced apart and opposite each other. The third sub-portion 4173 connects between the third wall 4133 and the eighth wall. The second sub-portion 4172 and the third sub-portion 4173 are spaced apart and opposite each other.

[0150] The first sub-section 4171, the second sub-section 4172, the second wall 4132, and the seventh wall 4143 together form the first isolation channel A. The second sub-section 4172, the third wall 4133, the third sub-section 4173, and the eighth wall 4144 together form the second isolation channel B. The first isolation channel A and the second isolation channel B can extend along the length of the liquid cooling transmission pipe 400.

[0151] The input branch pipe 440 can be connected to the outer surface of the fourth wall 4134, and the output branch pipe 450 can be connected to the outer surface of the ninth wall 4145.

[0152] It is understandable that when the cross-sectional shape of the supply pipe 413 and the return pipe 414 is pentagonal, under the same cross-sectional area, the hydraulic radius of the supply pipe 413 and the return pipe 414 in this embodiment is greater than the hydraulic radius of pipes with a triangular or rectangular cross-sectional shape. Therefore, in different application scenarios, different cross-sectional shapes of the supply pipe 413 and the return pipe 414 can be selected according to the required refrigerant flow rate.

[0153] Additionally, the first isolation channel A and the second isolation channel B serve as thermal insulation spaces between the supply pipe 413 and the return pipe 414. Since the first isolation channel A and the second isolation channel B contain air, which is an excellent insulating material, the heat from the return pipe 414 can be insulated by the air, thus preventing heat transfer from the return pipe 414 to the supply pipe 413. This ensures that the refrigerant in the supply pipe 413 can maintain a low temperature.

[0154] The length of the liquid cooling transmission pipe 400 provided in this embodiment can also be adjusted according to the height of the cabinet 100 and / or the number of server nodes 200.

[0155] Please see Figure 13 , Figure 13 This application Figure 1The provided diagram illustrates the refrigerant flow in the rack server 1000. During operation of the liquid cooling system, refrigerant flows out from the fifth connector 320 of the heat exchanger 300 and enters the supply pipe 413 of the liquid cooling transmission pipe 400 via the input branch pipe 440. It then flows from the first connector 420 through the first pipe 2421 into the cold plate 241. The refrigerant can indirectly contact the heating element 230 through the cold plate 241, thereby absorbing heat from the heating element 230. After absorbing heat, the refrigerant flows through the second pipe 2422 and the second connector 430 to the return pipe 414, and then through the output branch pipe 450 and the sixth connector 330 back to the heat exchanger 300. Finally, the refrigerant is cooled within the heat exchanger 300 for the next cycle.

[0156] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A liquid-cooled transmission pipeline, characterized in that, Including multiple first holes and multiple second holes, and also including: A liquid supply pipeline includes a first side surface, a first mounting portion is provided on the first side surface, a first hole penetrates the first mounting portion and the pipe wall of the liquid supply pipeline, and a plurality of first holes communicate with the channel of the liquid supply pipeline. A return liquid pipe includes a second side surface, a second mounting portion is provided on the second side surface, a second hole penetrates the second mounting portion and the pipe wall of the return liquid pipe, and a plurality of second holes communicate with the channel of the return liquid pipe; A connecting portion is provided where the supply pipe and the return pipe are arranged side-by-side at intervals, the connecting portion connects the supply pipe and the return pipe, and the connecting portion, the supply pipe, and the return pipe are integrally formed; and An input branch pipe and an output branch pipe are provided, wherein the input branch pipe is connected to the liquid supply pipe and the output branch pipe is connected to the liquid return pipe; The refrigerant can enter the liquid supply pipe from the input branch pipe and flow out through multiple first holes in the liquid supply pipe. The refrigerant can also enter the return pipe from multiple second holes and flow out of the liquid cooling transmission pipe through the output branch pipe. The connection portion includes a first sub-portion and a second sub-portion, both connected between the liquid supply pipe and the return pipe. The first sub-portion and the second sub-portion are spaced apart to form an isolation channel, which extends along the length of the liquid cooling transmission pipe.

2. The liquid-cooled transmission pipeline according to claim 1, characterized in that, The liquid supply pipe is integrally formed with the first mounting part, and the liquid return pipe is integrally formed with the second mounting part.

3. The liquid-cooled transmission pipeline according to claim 1 or 2, characterized in that, The cross-sectional shape of the liquid supply pipe and the cross-sectional shape of the liquid return pipe are circular.

4. The liquid-cooled transmission pipeline according to claim 1 or 2, characterized in that, The liquid supply pipe has a rectangular cross-sectional shape and includes a second wall. The liquid return pipe also has a rectangular cross-sectional shape and includes a fifth wall. The second wall and the fifth wall are arranged opposite to each other along the width direction of the liquid cooling transmission pipe. The connecting portion further includes a third sub-portion. The first sub-portion and the second sub-portion are both connected between the second wall and the fifth wall. The third sub-portion is connected between the first sub-portion and the second sub-portion. The third sub-portion is spaced apart from the second wall and the fifth wall to form two isolation channels.

5. The liquid-cooled transmission pipeline according to claim 1 or 2, characterized in that, The liquid supply pipe has a triangular cross-sectional shape and includes a second wall. The liquid return pipe has a triangular cross-sectional shape and includes a fifth wall. The second wall and the fifth wall are arranged opposite to each other along the width direction of the liquid cooling transmission pipe. Both the first sub-part and the second sub-part are connected between the second wall and the fifth wall.

6. The liquid-cooled transmission pipeline according to claim 1 or 2, characterized in that, The liquid supply pipe has a pentagonal cross-sectional shape and includes a second wall and a third wall connected to each other. The return pipe has a pentagonal cross-sectional shape and includes a seventh wall and an eighth wall connected to each other. Along the width direction of the liquid cooling transmission pipe, the second wall and the seventh wall are arranged opposite to each other, and the third wall and the eighth wall are arranged opposite to each other. The connecting portion further includes a third sub-portion. The first sub-portion is connected between the second wall and the seventh wall. One end of the second sub-portion is connected to the connection between the second wall and the third wall, and the other end of the second sub-portion is connected to the connection between the seventh wall and the eighth wall. The second sub-portion and the first sub-portion are spaced apart and opposite each other to form a first isolation channel. The third sub-portion is connected between the second wall and the seventh wall. The third sub-portion and the second sub-portion are spaced apart and opposite each other to form a second isolation channel.

7. A rack-mount server, characterized in that, The system includes multiple server nodes, each of which includes a cold plate, a connecting pipe, and a liquid-cooled transmission pipe as described in any one of claims 1-6. The liquid-cooled transmission pipe further includes a first connector and a second connector. The connecting pipe includes a first pipe and a second pipe, which are arranged side by side and extend in the same direction. The first pipe includes a first end and a second end. The first end is connected to the liquid inlet of the cold plate, the second end is connected to one end of the first connector and communicates with the first connector, and the other end of the first connector is connected to the first hole. The second pipe includes a third end and a fourth end. The third end is connected to the liquid outlet of the cold plate, the fourth end is connected to one end of the second connector and communicates with the second connector, and the other end of the second connector is connected to the second hole.

8. The rack server according to claim 7, characterized in that, When the number of the first holes is the same as the number of the second holes, and the number of server nodes is less than the number of the first holes, the liquid cooling transmission pipe further includes a first connecting cover and a second connecting cover. The first hole not connected to the server node is sealed to the first connecting cover, and the second hole not connected to the server node is sealed to the second connecting cover.

9. The rack server according to claim 7 or 8, characterized in that, Each of the server nodes includes a chassis, a third connector, and a fourth connector. The chassis is provided with a first through hole and a second through hole. The third connector passes through the first through hole, and the fourth connector passes through the second through hole. The third connector is connected to the second end of the first pipe, and the third connector is matched and connected with the first connector. The fourth connector is connected to the fourth end of the second pipe, and the fourth connector is matched and connected with the second connector.

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