An immersion liquid cooling device for data center

Abstract

This invention discloses an immersion liquid cooling device for data centers, belonging to the field of immersion liquid cooling technology. It includes an immersion liquid cooling tank for holding coolant, with multiple manifolds on both sides of the tank. Each branch of the manifolds on both sides of the immersion liquid cooling tank has a liquid exchange port, and each branch of the manifolds is connected to its corresponding liquid exchange port. The processor includes a processor body, a grid shell that matches the immersion liquid cooling tank, and an interface top plate. This invention, by providing movable heat dissipation vents and rotatable guide fins on both sides of the grid shell, allows the guide fins to close to protect the processor body when it needs maintenance or removal; after the processor is installed, the guide fins can unfold and participate in constructing the heat dissipation channel, thus balancing the device's protective performance and heat dissipation performance, improving the device's applicability and ease of use.

Description

Technical Field

[0001] This invention belongs to the field of immersion liquid cooling technology, specifically an immersion liquid cooling device for data centers. Background Technology

[0002] With the rapid development of cloud computing, artificial intelligence, and big data services, the power density of servers and related electronic equipment in data centers is constantly increasing. Traditional air-cooling methods are gradually becoming insufficient to meet the demands of high-density deployments in terms of heat dissipation capacity, energy consumption control, and noise suppression. To improve heat dissipation efficiency and reduce the energy consumption of cooling systems, immersion liquid cooling technology is increasingly being applied to data center cooling scenarios. This involves directly immersing heat-generating equipment in an insulating coolant, utilizing direct heat exchange between the coolant and the equipment to achieve heat conduction and removal, thereby improving the operating temperature environment of the equipment and enhancing the overall energy efficiency of the system.

[0003] However, existing immersion liquid cooling systems for data centers still have certain shortcomings in practical applications: On the one hand, processors can usually be placed directly in the liquid cooling tank without a structural design to limit and lock their position. This makes it easy for processors to shift, loosen, or tilt during assembly, handling, maintenance, or equipment operation vibrations, thus affecting installation stability and electrical connection reliability. On the other hand, the coolant flow path in existing systems is usually long and the fluid dispersion is large. The coolant temperature rise accumulates significantly during the flow process, which can easily cause uneven heat dissipation and low heat exchange efficiency. In addition, existing processors lack effective protection and flow channel organization structure when removed for maintenance, making it difficult to balance maintenance convenience and heat dissipation efficiency. Therefore, it is necessary to further improve the structure of existing immersion liquid cooling systems. Summary of the Invention

[0004] To overcome the above-mentioned defects, the present invention provides an immersion liquid cooling device for data centers, which solves the problems of unreasonable structural design and low heat exchange efficiency of existing immersion liquid cooling devices.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an immersion liquid cooling device for data centers, comprising:

[0006] An immersion liquid cooling tank for holding coolant is provided with multiple manifolds on both sides of the immersion liquid cooling tank. Each branch of the manifold on both sides of the immersion liquid cooling tank is provided with a liquid exchange port, and each branch of the manifold is connected to the corresponding liquid exchange port.

[0007] The processor includes a processor body, a grid shell that matches the immersion liquid cooling tank, and an interface top plate. The immersion liquid cooling tank is provided with multiple limiting grooves. The size of the grid shell matches the limiting grooves. The grid shell is slidably connected to the limiting grooves. The processor body is disposed inside the grid shell. The interface top plate is disposed on the top of the grid shell and is matched with the processor body.

[0008] Multiple movable heat dissipation vents are provided on both sides of the grille shell. Guide fins are rotatably connected inside the movable heat dissipation vents. A fin control mechanism is provided on the grille shell to synchronously control all guide fins. Locking mechanisms are provided on both sides of the grille shell to lock the position of the processor in the immersion liquid cooling tank.

[0009] As a further aspect of the present invention: a main fluid exchange pipe is provided connecting the main ports of multiple manifolds on the same side.

[0010] As a further aspect of the present invention: after the heat dissipation fins on two adjacent processors are fully extended, the heat dissipation fins between the two processors are spliced ​​together to form multiple parallel heat dissipation channels, and the opening positions of the liquid exchange ports correspond one-to-one with the heat dissipation channels.

[0011] As a further aspect of the present invention: each of the corresponding limiting groove positions in the immersion liquid cooling tank is provided with an insertion interface, and the insertion interface is matched with the locking mechanism.

[0012] As a further aspect of the present invention: the movable heat dissipation vents on each side of the grille housing are provided in two rows; the fin control mechanism includes multiple protective housings fixedly connected to the grille housing; a worm and a worm wheel are rotatably connected inside the protective housing; the worm and the worm wheel mesh with each other; and the worm wheel is coaxially and fixedly connected to the rotating shaft of the guide fins on both sides; the worms in two adjacent protective housings are connected by a transmission shaft; a rotating frame is provided on the protective housing at the position corresponding to the transmission shaft; and the transmission shaft is rotatably connected to the corresponding rotating frame.

[0013] As a further embodiment of the present invention: a sealing shell is embedded in the top plate of the interface, a three-axis bevel gear commutator is provided at the bottom of the sealing shell, a servo motor for driving the three-axis bevel gear commutator is provided inside the sealing shell, two-axis bevel gear commutators are provided on both sides of the grille shell, the two output ends of the three-axis bevel gear commutator are connected to the input ends of the two two-axis bevel gear commutators, and the output ends of the two-axis bevel gear commutators are connected to the worm gears on the corresponding side.

[0014] As a further embodiment of the present invention: the locking mechanism includes a combined locking housing, a main gear, a secondary gear, and a second servo motor. The combined locking housing is disposed on the side wall of the grille housing near the top. The main gear and the secondary gear are rotatably connected inside the combined locking housing and mesh with each other. The gear ratio of the main gear and the secondary gear is 1:4. The second servo motor is disposed on one side of the combined locking housing and is a liquid-tight servo motor. The second servo motor is used to drive the main gear.

[0015] As a further aspect of the present invention: two lock cylinders are symmetrically distributed on the combined locking housing. The lock cylinders penetrate the combined locking housing and are slidably connected to it. A slider and a limit button are fixedly connected to one side of the lock cylinder in sequence. A partition is fixedly connected inside the combined locking housing. A pair of sliding grooves are provided on the partition. The slider is slidably connected to the corresponding sliding groove. A circular yoke plate is coaxially fixedly connected to the secondary gear. A pair of arc-shaped yoke grooves are provided on the circular yoke plate. The two arc-shaped yoke grooves are centrally symmetrically distributed with respect to the axis of the circular yoke plate. The limit button is slidably connected to the corresponding arc-shaped yoke groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. By setting up a grid shell, limiting groove and locking mechanism that cooperate with the immersion liquid cooling tank, the present invention can reliably fix the position of the processor after it is inserted into the liquid cooling tank, and avoid the processor from shifting, loosening or tilting during assembly, handling, maintenance or equipment operation vibration, thereby improving the processor installation stability, electrical connection reliability and overall machine operation safety.

[0018] 2. This invention provides movable heat dissipation vents and rotatable guide fins on both sides of the grille shell. When the processor needs to be inspected or removed, the guide fins can close to protect the processor body. After the processor is installed, the guide fins can unfold and participate in the construction of heat dissipation channels, thus taking into account both the protective performance and heat dissipation performance of the equipment, and improving the applicability and ease of use of the device.

[0019] 3. The present invention forms multiple parallel heat dissipation channels by unfolding and splicing the guide fins on adjacent processors. This can effectively constrain the flow path of the coolant, so that the coolant forms a more regular and short-range circulating flow path in the liquid cooling tank, reducing the dispersion of the coolant during the flow process, reducing the temperature gradient, and improving the heat exchange efficiency and cooling effect of the coolant on the high heat-generating components in the processor. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the present invention from another angle;

[0022] Figure 3 This is a three-dimensional structural diagram of the processor of the present invention;

[0023] Figure 4 for Figure 3 Enlarged view of section A in the middle;

[0024] Figure 5 This is a three-dimensional structural diagram of the worm gear portion of the present invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the guide fins of the present invention after they have been deployed;

[0026] Figure 7 This is a three-dimensional structural schematic diagram of the three-axis bevel gear commutator and the two-axis bevel gear commutator of the present invention;

[0027] Figure 8 This is a three-dimensional structural diagram of the locking mechanism portion of the present invention;

[0028] Figure 9 This is a three-dimensional internal structure diagram of the locking mechanism of the present invention;

[0029] Figure 10 This is an exploded view of the locking mechanism of the present invention.

[0030] In the diagram: 1. Immersion liquid cooling tank; 2. Manifold; 3. Liquid exchange port; 4. Processor; 41. Processor body; 42. Grille shell; 43. Interface top plate; 5. Movable heat dissipation vent; 6. Guide fins; 7. Fin control mechanism; 8. Locking mechanism; 9. Main liquid exchange pipe; 71. Protective shell; 72. Worm gear; 73. Worm wheel; 74. Rotating frame; 75. Sealing shell; 76. Three-axis bevel gear commutator; 77. Servo motor No. 1; 78. Two-axis bevel gear commutator; 81. Combined locking shell; 82. Main gear; 83. Secondary gear; 84. Servo motor No. 2; 85. Lock cylinder; 86. Slider; 87. Limit button; 88. Partition plate; 89. Circular yoke plate; 810. Arc-shaped yoke groove. Detailed Implementation

[0031] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0032] Example 1, referring to Figures 1-3This is the first embodiment of the present invention. This embodiment provides an immersion liquid cooling device for a data center. The liquid cooling device is a single-phase immersion liquid cooling device, in which the coolant is kept in a liquid state throughout the process. It includes: an immersion liquid cooling tank 1 for holding the coolant; multiple manifolds 2 are provided on both sides of the immersion liquid cooling tank 1; each branch pipe of the manifold 2 on both sides of the immersion liquid cooling tank 1 is provided with a liquid exchange port 3; each branch pipe of the manifold 2 is connected to the corresponding liquid exchange port 3; the main pipe 1 of the multiple manifolds 2 on the same side is connected to a main liquid exchange pipe 9; the immersion liquid cooling tank 1 is filled with a large amount of coolant; the manifolds 2 on both sides of the immersion liquid cooling tank 1 are respectively for liquid inlet and liquid outlet functions; the main liquid exchange pipe 9 is connected to a circulation pump and a liquid exchanger to realize the circulation flow and heat exchange function of the coolant.

[0033] The processor 4 includes a processor body 41, a grid shell 42 that matches the immersion liquid cooling tank 1, and an interface top plate 43. The immersion liquid cooling tank 1 is provided with multiple limiting grooves. The size of the grid shell 42 matches the limiting grooves, and the grid shell 42 is slidably connected in the limiting grooves. The processor body 41 is disposed in the grid shell 42, and the interface top plate 43 is disposed on the top of the grid shell 42 and is matched with the processor body 41. The processor 4 in this invention is different from a general processor 4 in that: the grid shell 42 is specially designed and matched with the immersion liquid cooling tank 1. The general processor shell is only designed with a specific shape according to the liquid cooling tank to facilitate insertion. The interface top plate 43 integrates a variety of necessary interfaces and is connected to various parts of the processor body 41.

[0034] Multiple movable heat dissipation vents 5 are provided on both sides of the grille housing 42. Guide fins 6 are rotatably connected within each movable heat dissipation vent 5. A fin control mechanism 7 is provided on the grille housing 42 to synchronously control all guide fins 6. Locking mechanisms 8 are provided on both sides of the grille housing 42 to lock the processor 4 in the immersion liquid cooling tank 1. After the guide fins 6 on two adjacent processors 4 are fully extended, the guide fins 6 between the two processors 4 interlock to form multiple parallel heat dissipation channels. The location of the liquid exchange port 3... Corresponding to the heat dissipation channels, each of the corresponding limiting slots in the immersion liquid cooling tank 1 has an insertion interface, which matches the locking mechanism 8. The grille shell 42 has a movable heat dissipation port 5, and the guide fins 6 are rotatably connected at the movable heat dissipation port 5. The advantage of this design is that when the processor 4 is removed for inspection and maintenance, the guide fins 6 and the movable heat dissipation port 5 are closed, which can protect the internal processor body 41. After being connected to the immersion liquid cooling tank 1, the guide fins 6 are unfolded, which can form multiple flow channels to improve heat dissipation efficiency.

[0035] Generally, after the processor 4 is connected to the liquid cooling device, the processor 4 can be placed and removed at will, and there is no structure set for fixing the position of the processor 4. During assembly, handling, maintenance or equipment operation vibration, the processor 4 is prone to positional displacement, loosening or tilting, resulting in inconsistent installation status. The present invention solves this problem by setting a locking mechanism 8.

[0036] Example 2, refer to Figures 3-7 This is the second embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an immersion liquid cooling device for data centers and its fin control mechanism 7. By controlling the arrangement and distribution of the guide fins 6 on each processor 4, multiple regular flow channels are formed to improve the liquid cooling heat dissipation effect of the device. It includes: two rows of movable heat dissipation vents 5 on each side of the grille housing 42; the fin control mechanism 7 includes multiple protective housings 71 fixedly connected to the grille housing 42; a worm gear 72 and a worm wheel 73 are rotatably connected inside the protective housing 71, and the worm gear 72 and the worm wheel 73 mesh with each other. Furthermore, the worm gear 73 is coaxially and fixedly connected to the rotating shaft of the guide fins 6 on both sides. The worms 72 in the two adjacent protective shells 71 are connected by a transmission shaft. A rotating frame 74 is provided on the protective shell 71 at the position corresponding to the transmission shaft. The transmission shaft is rotatably connected to the corresponding rotating frame 74. The guide fins 6 in the movable heat dissipation vents 5 on both sides of the protective shell 71 are controlled by the same worm gear 73. The worms 72 on the same side are connected by a transmission shaft. When multiple worms 72 rotate synchronously, the worm gear 73 meshing with each worm 72 rotates synchronously, and the angle of the guide fins 6 is adjusted synchronously.

[0037] A sealing shell 75 is embedded in the top plate 43 of the interface. A three-axis bevel gear commutator 76 is provided at the bottom of the sealing shell 75. A first servo motor 77 for driving the three-axis bevel gear commutator 76 is provided inside the sealing shell 75. Two-axis bevel gear commutators 78 are provided on both sides of the grille shell 42. The two output ends of the three-axis bevel gear commutator 76 are connected to the input ends of the two two-axis bevel gear commutators 78. The output ends of the two-axis bevel gear commutators 78 are connected to the worm gear 72 on the corresponding side. The sealing shell 75 outside the first servo motor 77 ensures the sealing of the external environment of the first servo motor 77. The first servo motor 77 is connected to the two two-axis bevel gear commutators 78 through the three-axis bevel gear commutator 76, thereby synchronously driving the guide fins 6 on both sides of the grille shell 42 to unfold.

[0038] It should be noted that the edges of the guide fins 6 are chamfered, and the chamfering directions of the guide fins 6 on both sides of the grille shell 42 are opposite. This means that when inserting the processors 4, they need to be inserted one by one, and after each processor 4 is inserted, the guide fins 6 on both sides of the grille shell 42 in that processor 4 need to be opened so that after the next processor 4 is inserted, the guide fins 6 between two adjacent grille shells 42 will not interfere with each other and will fit stably.

[0039] The existing immersion liquid cooling tank uses a coolant flow scheme where the coolant flows in from the bottom valve and out from the valve near the top. The coolant flows from bottom to top, the flow channel is relatively long, and the fluid dispersion is large. This results in good heat absorption at low levels, but as heat gradually accumulates, the actual heat absorption capacity of the coolant is extremely limited at high levels due to its high temperature. The scheme adopted in this invention avoids this problem. The flow channel formed by the splicing of the guide fins 6 between adjacent grille shells 42 is relatively short. The circulation path of the coolant in the immersion liquid cooling tank 1 is short, the temperature gradient of the coolant is small, and the heat absorption effect is better. Moreover, due to the flow channel limitation, the coolant is not easily dispersed, resulting in better cooling effect when cooling high-heat components such as the CPU and GPU in the processor body 41.

[0040] The rest of the structure is the same as in Example 1.

[0041] Example 3, referring to Figures 8-10 This is the third embodiment of the present invention. Unlike the previous embodiment, this embodiment provides an immersion liquid cooling device for a data center and its locking mechanism 8. The locking mechanism 8 is used to fix the processor 4 after it is inserted to prevent the processor 4 from shifting position. It includes: a combined locking housing 81, a main gear 82, a secondary gear 83, and a second servo motor 84. The combined locking housing 81 is disposed on the side wall of the grille housing 42 near the top. The main gear 82 and the secondary gear 83 are rotatably connected to the combined locking housing 81 and mesh with each other. The gear ratio of the main gear 82 and the secondary gear 83 is 1:4. The second servo motor 84 is disposed on one side of the combined locking housing 81 and is a liquid-tight servo motor. The second servo motor 84 is used to drive the main gear 82.

[0042] Two lock cylinders 85 are symmetrically distributed on the combined locking housing 81. The lock cylinders 85 penetrate the combined locking housing 81 and are slidably connected to it. A slider 86 and a limit button 87 are fixedly connected to one side of the lock cylinder 85. A partition 88 is fixedly connected inside the combined locking housing 81. A pair of sliding grooves are opened on the partition 88. The slider 86 is slidably connected to the corresponding sliding groove. A circular yoke plate 89 is coaxially fixedly connected to the secondary gear 83. A pair of arc-shaped yoke grooves 810 are opened on the circular yoke plate 89. The two arc-shaped yoke grooves 810 are centrally symmetrically distributed with respect to the axis of the circular yoke plate 89. The limit button 87 is slidably connected to the corresponding arc-shaped yoke groove 810.

[0043] The second servo motor 84 can drive the main gear 82 to rotate. Since the main gear 82 and the auxiliary gear 83 mesh with each other, the auxiliary gear 83 will naturally rotate as well. The purpose of setting the main gear 82 and the auxiliary gear 83 to form a gear set is to reduce the load on the second servo motor 84 and increase the torque of the auxiliary gear 83 by relying on their large gear ratio. Since the control of the lock core 85 in the locking mechanism 8 mainly depends on the relative rotation of the arc-shaped yoke groove 810, its structure itself has certain requirements for torque.

[0044] The rotation of the secondary gear 83 will drive the circular yoke plate 89 to rotate synchronously. Since the upper limit button 87 of the lock cylinder 85 is restricted by the arc-shaped yoke groove 810, when the circular yoke plate 89 rotates, the position of the lock cylinder 85 will gradually move away from the axis of the circular yoke plate 89. The slider 86 on the lock cylinder 85 slides in the groove on the partition plate 88, which can ensure the stability of the linear movement of the lock cylinder 85. The unfolding of the lock cylinder 85 will allow it to be inserted into the insertion interface, thereby making the overall position of the processor 4 relatively fixed.

[0045] It should also be noted that both servo motor 77 and servo motor 84 are powered by the motherboard on the processor body 41.

[0046] The rest of the structure is the same as in Example 2.

[0047] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An immersion liquid cooling device for a data center, characterized by, include: An immersion liquid cooling tank (1) for holding coolant is provided on both sides of the immersion liquid cooling tank (1), and each branch pipe of the corresponding manifold (2) on both sides of the immersion liquid cooling tank (1) is provided with a liquid exchange port (3), and each branch pipe of the manifold (2) is connected to the corresponding liquid exchange port (3). The processor (4) includes a processor body (41), a grid shell (42) that is matched with the immersion liquid cooling tank (1), and an interface top plate (43). The immersion liquid cooling tank (1) is provided with multiple limiting grooves. The size of the grid shell (42) matches the limiting grooves. The grid shell (42) is slidably connected in the limiting grooves. The processor body (41) is disposed in the grid shell (42). The interface top plate (43) is disposed on the top of the grid shell (42) and is matched with the processor body (41). Multiple movable heat dissipation vents (5) are provided on both sides of the grille shell (42). A guide fin (6) is rotatably connected inside the movable heat dissipation vent (5). A fin control mechanism (7) is provided on the grille shell (42) to synchronously control all the guide fins (6). A locking mechanism (8) is provided on both sides of the grille shell (42) to lock the position of the processor (4) in the immersion liquid cooling tank (1).

2. The immersion liquid cooling device for data centers according to claim 1, characterized in that: The main inlet (1) of the multiple manifolds (2) on the same side is connected to a main fluid exchange pipe (9).

3. The immersion liquid cooling device for data centers according to claim 1, characterized in that: After the guide fins (6) on two adjacent processors (4) are fully extended, the guide fins (6) between the two processors (4) are spliced ​​together to form multiple parallel heat dissipation channels. The opening position of the liquid exchange port (3) corresponds to the heat dissipation channels one by one.

4. The immersion liquid cooling device for data centers according to claim 1, characterized in that: The immersion liquid cooling tank (1) is provided with a plug-in interface at the corresponding limit groove position, and the plug-in interface is matched with the locking mechanism (8).

5. The immersion liquid cooling device for data centers according to claim 1, characterized in that: The grille housing (42) has two rows of movable heat dissipation vents (5) on each side. The fin control mechanism (7) includes multiple protective housings (71) fixedly connected to the grille housing (42). A worm (72) and a worm wheel (73) are rotatably connected inside the protective housing (71). The worm (72) and the worm wheel (73) mesh with each other, and the worm wheel (73) is coaxially fixedly connected to the rotating shaft of the guide fins (6) on both sides. The worms (72) in two adjacent protective housings (71) are connected by a transmission shaft. A rotating frame (74) is provided on the protective housing (71) at the position corresponding to the transmission shaft. The transmission shaft is rotatably connected to the corresponding rotating frame (74).

6. The immersion liquid cooling device for a data center according to claim 5, characterized in that: The interface top plate (43) is embedded with a sealing shell (75). A three-axis bevel gear commutator (76) is provided at the bottom of the sealing shell (75). A first servo motor (77) for driving the three-axis bevel gear commutator (76) is provided inside the sealing shell (75). Two-axis bevel gear commutators (78) are provided on both sides of the grille shell (42). The two output ends of the three-axis bevel gear commutator (76) are connected to the input ends of the two two-axis bevel gear commutators (78). The output ends of the two-axis bevel gear commutators (78) are connected to the worm gear (72) on the corresponding side.

7. The immersion liquid cooling device for data centers according to claim 1, characterized in that: The locking mechanism (8) includes a combined locking housing (81), a main gear (82), a secondary gear (83), and a second servo motor (84). The combined locking housing (81) is located on the side wall of the grille housing (42) near the top. The main gear (82) and the secondary gear (83) are rotatably connected inside the combined locking housing (81) and mesh with each other. The gear ratio of the main gear (82) and the secondary gear (83) is 1:

4. The second servo motor (84) is located on one side of the combined locking housing (81) and is a liquid-tight servo motor. The second servo motor (84) is used to drive the main gear (82).

8. The immersion liquid cooling device for a data center according to claim 7, characterized in that: Two lock cylinders (85) are symmetrically distributed on the combined locking housing (81). The lock cylinders (85) penetrate the combined locking housing (81) and are slidably connected to it. A slider (86) and a limit button (87) are fixedly connected to one side of the lock cylinder (85). A partition (88) is fixedly connected inside the combined locking housing (81). A pair of sliding grooves are provided on the partition (88). The slider (86) is slidably connected to the corresponding sliding groove. A circular yoke plate (89) is coaxially fixedly connected to the secondary gear (83). A pair of arc-shaped yoke grooves (810) are provided on the circular yoke plate (89). The two arc-shaped yoke grooves (810) are centrally symmetrically distributed with respect to the axis of the circular yoke plate (89). The limit button (87) is slidably connected to the corresponding arc-shaped yoke groove (810).

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