CDU liquid cooling heat dissipation cabinet for data center

Abstract

The application relates to the technical field of liquid cooling heat dissipation cabinets, and discloses a CDU liquid cooling heat dissipation cabinet for a data center, which comprises a cabinet main body, the inside of the cabinet main body contains a liquid cooling machine box, the side of the cabinet main body is fixedly connected with a cold air fan cabinet, the inside of the cold air fan cabinet is fixedly connected with a ventilation pipeline, the cold air fan cabinet and the first cabinet are penetrated by a liquid inlet pipeline, the top of the cabinet main body is fixedly connected with a first cabinet, the bottom of the first cabinet is fixedly connected with liquid delivery pipes on both sides, the outside of the liquid delivery pipes is fixedly connected with a plurality of piston devices, and the bottom of the liquid delivery pipe is fixedly connected with a liquid outlet pipeline; the cabinet main body, the liquid cooling machine box and the circulating pipeline form a closed-loop liquid cooling structure, the cooling liquid is recycled, the cooling liquid in the liquid cooling machine box can be recycled, the discharged hot air is cooled and discharged by cooperating with air cooling of the cold air fan cabinet and water cooling of the ventilation pipeline, and the temperature around the equipment is reduced.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling chassis technology, and more specifically to a CDU liquid cooling chassis for data centers. Background Technology

[0002] As data center computing density continues to increase, the heat dissipation requirements of high-power chips such as AI and high-density cabinets have far exceeded the limits of traditional air cooling technology. This results in problems such as low heat dissipation efficiency, prominent local hot spots, high energy consumption, and persistently high PUE, making it difficult to meet the requirements of green data center construction and high-reliability operation. Liquid cooling technology has become the mainstream solution due to its higher heat exchange efficiency. Among them, the CDU (cooling distribution unit) is the core component of the liquid cooling system, undertaking functions such as cold energy transfer, heat exchange, voltage stabilization, and isolation between the primary and secondary side loops. However, existing CDUs and their matching liquid cooling chassis generally suffer from low integration, unreasonable flow channel design, and insufficient heat exchange efficiency, which cannot fully adapt to the efficient, stable, and intelligent liquid cooling heat dissipation requirements of high-density computing scenarios. Therefore, it is necessary to optimize and improve the liquid cooling chassis and CDU integration structure.

[0003] Existing data center cabinet liquid cooling equipment has low heat dissipation efficiency and high energy consumption, making it difficult to ensure long-term stable operation. Such equipment does not form a closed-loop liquid cooling structure of the main body of the chassis, the liquid cooling box and the circulation pipeline, and cannot realize the recycling and reuse of coolant. The coolant consumption is large and waste is serious. At the same time, it does not combine air cooling of the air-cooled chassis and water cooling of the ventilation duct with a coordinated heat dissipation design. It relies on a single liquid cooling method to dissipate heat, which cannot effectively cool the hot air emitted by the equipment. This causes hot air to accumulate around the equipment, which not only reduces the overall heat dissipation efficiency, but also indirectly increases the overall energy consumption of the data center.

[0004] The equipment lacks a pneumatically driven liquid cooling circulation structure and has no in-situ detection design for trigger plates and conductive copper plates, making it prone to leakage due to misoperation. During disassembly and maintenance, the lack of an electric push rod-driven piston structure to automatically seal the pipeline makes it impossible to smoothly drain residual liquid, resulting in an extremely high risk of coolant leakage. This not only affects the reliability of equipment operation but also poses safety hazards. In particular, when frequently replacing the liquid cooling box, the liquid loss cannot be replenished in time, severely reducing the controllability of data center cabinet heat dissipation. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a CDU liquid cooling heat dissipation chassis for data centers to solve the problems existing in the background art.

[0006] This invention provides the following technical solution: a CDU liquid-cooled heat dissipation chassis for data centers, comprising a chassis body, a liquid-cooled housing inside the chassis body, a cooling fan chassis fixedly connected to the side of the chassis body, a ventilation duct fixedly connected inside the cooling fan chassis, an inlet pipe penetrating between the cooling fan chassis and the interior of a first chassis, a first chassis fixedly connected to the top of the chassis body, infusion pipes fixedly connected to both sides of the bottom of the first chassis, multiple piston devices fixedly connected to the outside of the infusion pipes, an outlet pipe fixedly connected to the bottom of the infusion pipes, and a pressure pipe fixedly connected to the bottom of the first chassis.

[0007] Furthermore, a support plate is fixedly connected to the inner wall of the main body of the chassis, a trigger plate is sleeved at the center of the support plate, a spring is fixedly connected between the trigger plate and the support plate, and a conductive copper plate is fixedly connected to the bottom of the trigger plate.

[0008] Furthermore, an infusion tubing is provided through the inner wall of the main body of the chassis, and a docking plug is fixedly connected to the top of the infusion tubing. A plug bracket is fixedly connected to the inner wall of the main body of the chassis, and the plug bracket can clamp and fix the docking plug.

[0009] Furthermore, the piston device includes at least a piston chamber, an electric push rod, and a piston rod. The piston chamber is fixedly connected to the outside of the infusion tube, and the electric push rod is fixedly connected to the other end of the piston chamber. The electric push rod and the piston rod are slidably sleeved together, and a limit block is fixedly connected to the surface of the piston rod.

[0010] Furthermore, an infusion hose is fixedly connected to one side of the piston chamber, and a pneumatic tube is fixedly connected to the other side of the piston chamber. A ventilation hole is provided inside the piston rod.

[0011] Furthermore, a water pump is fixedly connected to the top of the first chassis, a diversion pipe is fixedly connected to one end of the water pump, infusion pipes are fixedly connected to both ends of the diversion pipe, an inlet pipe is fixedly connected to the other end of the water pump, and air pressure pumps are fixedly connected to both sides of the first chassis, with air pressure pipes fixedly connected to the bottom of the air pressure pumps.

[0012] Furthermore, a liquid storage tank is provided inside the first chassis. One end of the liquid storage tank is connected to the liquid inlet pipe, and a hydraulic piston is fixedly connected to the other end of the liquid storage tank.

[0013] Furthermore, the air cooler enclosure includes at least a liquid-cooled enclosure and a liquid-cooled cabinet. A liquid-cooled plate is fixedly connected inside the liquid-cooled cabinet. An inlet pipe is sleeved inside the liquid-cooled enclosure. One end of the inlet pipe is fixedly connected to the first enclosure, and the other end of the inlet pipe is fixedly connected to the top of the liquid-cooled plate. An outlet pipe is fixedly connected to the bottom of the liquid-cooled plate.

[0014] Furthermore, a fan box is provided on one side of the liquid cooling plate, and the fan box is fixedly connected to the inside of the liquid cooling cabinet. A ventilation duct is provided on the other side of the liquid cooling plate, and louvers are provided on the outside of the ventilation duct.

[0015] Furthermore, the liquid-cooled cabinet is internally connected to a ventilation duct, the bottom of which is provided with a water storage tank, the bottom of which is fixedly connected to a water pumping pipe, and the top of which is fixedly connected to a liquid-cooled chassis.

[0016] The technical effects and advantages of this invention are as follows:

[0017] 1. This invention forms a closed-loop liquid cooling structure through the main body of the chassis, the liquid-cooled box, and the circulation pipeline. The coolant is recycled, and the coolant inside the liquid-cooled box can be recovered. Combined with the air cooling of the cold air chassis and the water cooling of the ventilation duct, the exhaust heat is cooled and discharged, reducing the temperature around the equipment, improving the overall heat dissipation efficiency of the equipment, reducing the energy consumption of the data center, and ensuring the long-term stable operation of the equipment.

[0018] 2. This invention uses a pneumatic pump in the first housing to deliver compressed air to the pneumatic pipe. The air pressure pushes the coolant in the liquid-cooled housing, which flows through the outlet pipe into the liquid-cooled plate in the air-cooled housing to complete the cooling. This structure achieves in-situ detection through a trigger plate and a conductive copper plate, thereby effectively avoiding leakage problems caused by misoperation. During disassembly, an electric push rod drives a piston to automatically seal the pipeline, and the residual liquid is smoothly drained through the air passage. The structure eliminates coolant leakage and significantly improves maintenance safety and equipment operation reliability.

[0019] 3. The present invention utilizes a hydraulic piston and a liquid storage tank installed on the top of the first chassis. The liquid storage tank and the hydraulic piston automatically replenish the liquid to prevent the pipeline from running out of liquid. The distribution pipe can achieve uniform distribution of coolant. In addition, the air pressure pump and the pressurization structure ensure stable delivery pressure, so that the flow rate of the entire liquid cooling circuit is stable and the cooling is uniform. When frequent replacement of the liquid cooling box causes liquid loss, it can be automatically replenished, thereby improving the controllability of heat dissipation of the data center cabinet. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the chassis body of the present invention.

[0022] Figure 3 This is a schematic diagram of the pallet structure of the present invention.

[0023] Figure 4 This is a schematic diagram of the trigger plate structure of the present invention.

[0024] Figure 5This is a schematic diagram of the piston device structure of the present invention.

[0025] Figure 6 This is a schematic diagram of the first chassis structure of the present invention.

[0026] Figure 7 This is a schematic diagram of the infusion tubing structure of the present invention.

[0027] Figure 8 This is a schematic diagram of the piston cavity structure of the present invention.

[0028] Figure 9 This is a schematic diagram of the piston rod structure of the present invention.

[0029] Figure 10 This is a schematic diagram of the internal structure of the left side of the air cooler casing of the present invention.

[0030] Figure 11 This is a schematic diagram of the internal structure of the right side of the air cooler casing of the present invention.

[0031] The attached diagram is labeled as follows: 1. Main chassis; 2. Liquid-cooled housing; 3. First chassis; 4. Infusion tube; 5. Air-cooled housing; 6. Inlet pipe; 7. Piston assembly; 8. Outlet pipe; 9. Pressure pipe; 10. Ventilation duct; 101. Support plate; 102. Trigger plate; 103. Conductive copper plate; 104. Spring; 201. Infusion hose; 202. Connecting plug; 203. Plug bracket; 301. [Unclear - possibly a type of connector] 302. Plug tube; 303. Electric push rod; 304. Piston rod; 305. Limiting block; 306. Ventilation hole; 407. Water pump; 408. Diverter pipe; 409. Air pump; 400. Liquid storage tank; 401. Hydraulic piston; 502. Liquid cooling cabinet; 503. Liquid cooling plate; 504. Fan box; 505. Louver; 506. Water storage tank; 507. Water pumping pipe. Detailed Implementation

[0032] The technical solutions of this invention will now be clearly and completely described with reference to the accompanying drawings. Furthermore, the structural forms described in the following embodiments are merely illustrative, and the liquid-cooled heat dissipation chassis involved in this invention is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this invention.

[0033] Reference Figure 1-11This invention provides a liquid-cooled heat dissipation chassis for a data center, including a chassis body 1. A first chassis 3 is installed on the top of the chassis body 1. Cooled liquid is transported from the inlet pipe 4 to the outlet pipe 8 through the inlet pipe 4. During the transport of liquid from the inlet pipe 4 to the outlet pipe 8, the liquid is connected to the external interface of the liquid-cooled box 2 via a piston device 7, and the coolant is sent into the liquid-cooled box 2 to cool the circuit board inside the liquid-cooled box 2. A check valve is provided at the connection position between the inlet pipe 4 and the outlet pipe 8 to prevent liquid backflow. After the liquid enters the air-cooled box 5 through the outlet pipe 8 for cooling, it flows back into the first chassis 3 through the inlet pipe 6 and is evenly transported to the inlet pipes 4 on both sides of the first chassis 3 to realize the circulation of coolant.

[0034] In a preferred embodiment, the spring 104 connects the trigger plate 102 to the groove in the support plate 101. When the liquid cooling box 2 is placed, the liquid cooling box 2 presses down on the trigger plate 102 by its own weight, causing the conductive copper plate 103 at the bottom of the trigger plate 102 to fit into the corresponding groove, thus indicating the presence status. When the liquid cooling box 2 is removed, the conductive copper plate 103 separates from the trigger plate 102 under the reset force of the spring 104, completing the status reset. This structure is used to sense whether a liquid cooling box 2 has been placed at the position, preventing operational errors from causing the piston chamber 301 at that position to open and resulting in liquid leakage.

[0035] In a preferred embodiment, the connector 202 connects with the interface on the liquid cooling box 2, allowing the liquid in the infusion tube 4 to be introduced into the liquid cooling box 2, and heat dissipation and cooling are achieved through the condensation pipes inside the liquid cooling box 2; in the non-working state, the connector bracket 203 can clamp and fix the connector 202, which facilitates pipe arrangement and storage.

[0036] In a preferred embodiment, an electric push rod 302 disposed on the outside of the piston chamber 301 can drive the piston rod 303 to reciprocate within the piston chamber 301. A limiting block 304 on the piston rod 303 engages with a groove inside the piston chamber 301 to limit the extension and retraction stroke of the piston rod 303. When the electric push rod 302 extends, the piston rod 303 blocks the connection between the piston chamber 301 and the infusion tubing 201, preventing liquid from entering the infusion tubing 201. When the piston rod 303 retracts, the blockage between the infusion tube 4 and the infusion tubing 201 is released, allowing normal liquid flow.

[0037] In a preferred embodiment, when the liquid cooling housing 2 needs to be disassembled, the piston rod 303 in one piston device 7 extends first to seal the connection channel between the infusion tube 4 and the infusion hose 201. The piston device 7 on this side, through the ventilation hole 305 inside the piston rod 303, connects the air pressure tube 9 and the infusion hose 201 to form an air passage. The air pressure in the air pressure tube 9 is used to steadily press the residual liquid in the liquid cooling housing 2 to the corresponding infusion hose 201 of the other piston device 7. After the liquid in the liquid cooling housing 2 is completely emptied, the piston rod 303 of the other piston device 7 extends again to block the flow channel between the infusion hose 201 and the infusion tube 4, so that the two infusion hoses 201 on both sides are sealed and closed in sequence, effectively preventing liquid leakage in the infusion tube 4 and improving the sealing and safety of the disassembly operation.

[0038] In a preferred embodiment, a motor located at the center of the first housing 3 drives the impeller of the water pump 401 to rotate, transporting liquid from the inlet pipe 6 to the diversion pipe 402, and evenly distributing it into the two side delivery pipes 4. Air pumps 403, fixedly installed on both sides of the water pump 401, provide pneumatic power to the piston device 7.

[0039] In a preferred embodiment, when liquid is delivered from the inlet pipe 6 to the water pump 401, it can flow into the storage tank 404 through the reserved channel for temporary storage. When the liquid in the inlet pipe 6 decreases, the hydraulic piston 405 can push the piston to squeeze the stored liquid in the storage tank 404 and replenish the liquid into the inlet pipe 6, thereby realizing automatic liquid replenishment of the system.

[0040] In a preferred embodiment, the liquid outlet pipe 8 transports the heat-absorbing liquid to the interior of the liquid cooling plate 503 for cooling; the cooled liquid is pressurized by the pressurization mechanism inside the liquid cooling housing 501 to pressurize the liquid in the liquid inlet pipe 6, so as to avoid insufficient pressure affecting the conveying efficiency when the liquid inlet pipe 6 is conveyed to the water pump 401.

[0041] In a preferred embodiment, the fan box 504 installed inside the liquid-cooled cabinet 502 generates forced airflow to remove the heat carried by the liquid in the condenser pipe of the liquid-cooled plate 503, thereby achieving cooling. The hot airflow after heat exchange is introduced into the ventilation duct 10 for further water cooling, avoiding the direct discharge of high-temperature airflow which would cause the ambient temperature around the equipment to rise and affect the overall heat dissipation effect.

[0042] In a preferred embodiment, the condensate generated after the hot airflow is cooled by the ventilation duct 10 flows into the water storage tank 506. The liquid in the water storage tank 506 is then pumped through the water pump 507 to the top of the ventilation duct 10 for discharge, thereby achieving water recycling.

[0043] Working principle of the invention: This invention provides a liquid-cooled CDU chassis for data centers. With the chassis body 1 as the core, a closed-loop cooling system is formed by a first chassis 3, a liquid-cooled housing 2, and circulation pipes. Coolant enters the liquid-cooled housing 2 via the inlet pipe 4 and piston device 7 to dissipate heat from the internal circuit boards. It then flows into the air-cooled housing 5 via the outlet pipe 8 for further cooling. After cooling, it flows back to the first chassis 3 via the inlet pipe 6 for distribution, and is then reintroduced into the inlet pipes 4 on both sides, achieving coolant recycling. Check valves are installed between the pipes to effectively prevent liquid backflow and ensure stable circulation.

[0044] The device features automatic detection, controllable on / off switching, and safe disassembly. The tray 101 supports the trigger plate 102 via a spring 104. When the liquid-cooled housing 2 is placed, the trigger plate 102 is pressed down, causing the conductive copper plate 103 to adhere and achieve on-site detection. It automatically resets after removal. This structure is used to sense whether an object is already placed at the desired location, preventing accidental piston opening and potential liquid leakage. The connector 202 connects to the liquid-cooled housing 2 to deliver coolant; when not in operation, it is stored and secured by the connector bracket 203. The piston chamber 301 is driven by an electric push rod 302 to reciprocate the piston rod 303, with the on / off switch controlled by a limit block 304. When disassembling the liquid-cooled housing 2, the piston devices 7 on both sides sequentially block the pipelines and form an air path through the ventilation holes 305 and the air pressure pipe 9, smoothly draining any remaining liquid and fundamentally preventing liquid leakage, thus improving maintenance safety.

[0045] The system is equipped with liquid replenishment, pressurization, and waste heat recovery functions, significantly improving heat dissipation efficiency and stability. Inside the first chassis 3, a water pump 401 evenly delivers liquid into the delivery pipe 4 via a distribution pipe 402. A pneumatic pump 403 powers the piston device 7. A storage tank 404 temporarily stores the liquid. Automatic liquid replenishment is achieved through a hydraulic piston 405 to prevent insufficient supply. The high-temperature liquid delivered by the outlet pipe 8 enters the liquid cooling plate 503, where it is forced to cool by a fan box 504. The heated airflow then enters the ventilation duct 10 for secondary water cooling, preventing ambient temperature rise. The resulting condensate flows into a water storage tank 506 and is returned to the ventilation duct 10 via a pumping pipe 507 for recycling. Simultaneously, the liquid cooling chassis 501 pressurizes the inlet pipe 6 to ensure efficient liquid delivery, achieving efficient, energy-saving, and safe liquid cooling for the data center.

[0046] Although the invention has been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these inventions without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0047] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0048] Secondly: The accompanying drawings of this invention only involve structures related to this invention. Other structures can be referred to with common designs. In the absence of conflict, the same invention and different inventions of this invention can be combined with each other.

[0049] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A liquid-cooled CDU chassis for data centers, comprising a chassis body, characterized in that: The main chassis houses a liquid-cooled housing. A cold air unit is fixedly connected to the side of the main chassis. A ventilation duct is fixedly connected inside the cold air unit. A liquid inlet pipe runs through the cold air unit and the interior of the first chassis. The top of the main chassis is fixedly connected to the first chassis. Infusion pipes are fixedly connected to both sides of the bottom of the first chassis. Multiple piston devices are fixedly connected to the outside of the infusion pipes. An outlet pipe is fixedly connected to the bottom of the infusion pipes. A pressure pipe is fixedly connected to the bottom of the first chassis. An infusion tubing is installed through the inner wall of the main body of the chassis. A connector is fixedly connected to the top of the infusion tubing, and the connector mates with an interface on the liquid cooling box. The piston device includes at least a piston chamber, an electric push rod, and a piston rod. The piston chamber is fixedly connected to the outside of the infusion tubing, and the electric push rod is fixedly connected to the other end of the piston chamber. The electric push rod and the piston rod are slidably sleeved together. A limit block is fixedly connected to the surface of the piston rod. When the electric push rod extends, the piston rod blocks the connection between the piston chamber and the infusion tubing, preventing liquid from entering the infusion tubing. When the piston rod retracts, the blockage between the infusion tubing and the infusion tubing is released, allowing normal liquid flow. One side of the piston chamber is fixedly connected to an infusion tubing, and the other side is fixedly connected to a pneumatic tube. The piston rod has ventilation holes inside. When the liquid-cooled housing needs to be disassembled, the piston rod in one piston device extends first, sealing the connection between the infusion tubing and the infusion hose. This piston device, through the ventilation holes inside its piston rod, allows the pneumatic tube and the infusion tubing to communicate via an air passage. The pneumatic pressure in the pneumatic tube smoothly pumps the residual liquid in the liquid-cooled housing to the corresponding infusion hose in the other piston device. After the liquid in the liquid-cooled housing is completely emptied, the piston rod in the other piston device extends to seal the flow path between the infusion hose and the infusion tubing, thus sealing both infusion hoses sequentially. A support plate is fixedly connected to the inner wall of the main body of the chassis. A trigger plate is sleeved at the center of the support plate. A spring is fixedly connected between the trigger plate and the support plate. A conductive copper plate is fixedly connected to the bottom of the trigger plate. Through the structure of the trigger plate, spring and conductive copper plate, it senses whether a liquid-cooled box has been placed at the position, to prevent the piston chamber corresponding to the position from opening due to operational errors, causing liquid leakage.

2. The CDU liquid-cooled heat dissipation chassis for data centers according to claim 1, characterized in that: A plug bracket is fixedly connected to the inner wall of the main body of the chassis, and the plug bracket can hold and fix the docking plug.

3. The CDU liquid-cooled heat dissipation chassis for data centers according to claim 1, characterized in that: A water pump is fixedly connected to the top of the first chassis. A diversion pipe is fixedly connected to one end of the water pump. Infusion pipes are fixedly connected to both ends of the diversion pipe. An inlet pipe is fixedly connected to the other end of the water pump. Air pressure pumps are fixedly connected to both sides of the first chassis. Air pressure pipes are fixedly connected to the bottom of the air pressure pumps.

4. The CDU liquid-cooled heat dissipation chassis for data centers according to claim 1, characterized in that: The first chassis has a liquid storage tank inside, one end of which is connected to a liquid inlet pipe, and the other end of which is fixedly connected to a hydraulic piston.

5. A CDU liquid-cooled heat dissipation chassis for a data center according to claim 1, characterized in that: The air cooler enclosure includes at least a liquid-cooled enclosure and a liquid-cooled cabinet. A liquid-cooled plate is fixedly connected inside the liquid-cooled cabinet. An inlet pipe is sleeved inside the liquid-cooled enclosure. One end of the inlet pipe is fixedly connected to a first enclosure. The other end of the inlet pipe is fixedly connected to the top of the liquid-cooled plate. An outlet pipe is fixedly connected to the bottom of the liquid-cooled plate.

6. A CDU liquid-cooled heat dissipation chassis for a data center according to claim 5, characterized in that: A fan box is provided on one side of the liquid cooling plate, and the fan box is fixedly connected to the inside of the liquid cooling cabinet. A ventilation duct is provided on the other side of the liquid cooling plate, and louvers are provided on the outside of the ventilation duct.

7. A CDU liquid-cooled heat dissipation chassis for a data center according to claim 5, characterized in that: The liquid-cooled cabinet is internally connected to a ventilation duct. A water storage tank is located at the bottom of the ventilation duct. A water pumping pipe is fixedly connected to the bottom of the water storage tank. A liquid-cooled chassis is fixedly connected to the top of the water pumping pipe.

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