Flexible liquid cooling structure and server

Abstract

The present invention relates to the field of liquid cooling technology, and discloses a flexible liquid cooling structure and a server. The flexible liquid cooling structure comprises a plurality of flexible substrates, wherein a flexible connecting belt is fixedly connected between two adjacent flexible substrates, a cooling groove is provided on the upper end surface of the flexible substrate, and a cover plate is fixedly provided on the upper end surface of the flexible substrate, and the cooling groove and the cover plate form a cooling cavity. By arranging a jet component at the liquid inlet hole of the flexible liquid cooling structure, and utilizing the tapered structure of the liquid inlet pipe part, the contraction pipe part and the diffusion pipe part of the jet component, the flow rate of the coolant is effectively improved. When the coolant passes through the contraction pipe part, the cross section of the channel is gradually reduced, and the flow rate is significantly accelerated. At the same time, the air intake hole further guides air to mix into the coolant through the negative pressure effect, forming a stronger jet effect, so that the coolant can quickly flow through the entire cooling cavity, effectively reducing the liquid retention problem caused by insufficient flow rate, thereby achieving uniform distribution of the coolant.

Description

Technical Field

[0001] The present invention relates to the field of liquid cooling technology, and in particular to a flexible liquid cooling structure and a server. Background Art

[0002] With the rapid development of high-power electronic components and equipment such as printed circuit boards and high-performance servers, the importance of thermal management technology has become increasingly prominent. These devices generate a lot of heat during operation. If the heat dissipation is not timely or inefficient, it may cause local overheating, thereby causing equipment performance degradation, system failure and even safety hazards. At present, in order to meet the increasing demand for heat dissipation, liquid cooling technology is widely used in various high-power devices due to its efficient heat transfer performance. Especially in scenes with complex shapes and high power density, liquid circulation to effectively remove heat has become the first choice.

[0003] Currently, most liquid cooling plates are usually made of metal materials (such as aluminum, copper) or composite polymer materials. Heat dissipation is achieved by internally processing coolant flow channels, which can meet the thermal management requirements of a certain load. However, due to the twists and turns of the coolant flow, the liquid flow may be too slow or even stagnant in some areas, resulting in the coolant being unable to effectively and timely cover the entire heat source area, causing local heat accumulation, affecting the heat dissipation effect, and ultimately causing the equipment temperature to be too high.

[0004] Therefore, it is necessary to provide a flexible liquid cooling structure and a server to solve the problem that the liquid flows too slowly in some areas. Summary of the invention

[0005] The main purpose of the present invention is to provide a flexible liquid cooling structure and a server, aiming to solve the technical problems mentioned in the above background technology.

[0006] The present invention adopts the following technical solutions:

[0007] A flexible liquid cooling structure comprises: a plurality of flexible substrates, a flexible connecting belt is fixedly connected between two adjacent flexible substrates, a cooling groove is opened on the upper end surface of the flexible substrate, and a cover plate is fixedly arranged on the upper end surface of the flexible substrate, and the cooling groove and the cover plate form a cooling cavity;

[0008] Two opposite sides of the cooling tank are respectively provided with a liquid inlet hole and a liquid discharge hole, the liquid inlet hole is fixedly connected to a jet assembly, and the liquid discharge hole is fixedly connected to a liquid discharge hose;

[0009] The jet assembly includes a liquid inlet pipe portion, a contraction pipe portion and a diffusion pipe portion which are connected in sequence, the diffusion pipe portion is fixedly connected to the liquid inlet hole, the liquid inlet pipe portion and the diffusion pipe portion both contract toward the contraction pipe portion, and one side of the contraction pipe portion is connected to an air suction hole to accelerate the coolant flowing through the jet assembly, wherein the discharge hose between two adjacent flexible substrates is fixedly connected to the liquid inlet pipe portion.

[0010] Further, a hollow adjustment box is connected to one side of the shrinkable tube portion, an air suction hole is opened on one side of the adjustment box, and the air suction hole is communicated with the interior of the shrinkable tube;

[0011] A motor is fixedly connected to the side of the regulating box away from the air suction hole, and the jet assembly also includes a support frame, which is fixedly arranged on the inner wall of the contraction tube part, and the support frame is rotatably connected to a rotating shaft coaxially arranged with the contraction tube part, and a paddle is connected to one end of the rotating shaft facing the liquid inlet hole, and the end of the rotating shaft away from the paddle is connected to the driving end of the motor.

[0012] Furthermore, a driven gear is connected to one end of the rotating shaft away from the blade, the driving shaft of the motor is inserted into the adjusting box, and the driving shaft of the motor is connected to a driving gear, the driving gear is meshed with a first transition gear, the first transition gear is coaxially connected with a second transition gear, and the second transition gear is meshed with the driven gear, wherein the number of teeth of the driving gear is less than the number of teeth of the first transition gear, the number of teeth of the second transition gear is less than the number of teeth of the first transition gear, and the number of teeth of the driven gear is more than the number of teeth of the second transition gear.

[0013] Furthermore, a backflow prevention component is fixedly connected to the side of the air intake hole away from the motor, and the backflow prevention component includes a sleeve, and a first air duct and a second air duct are coaxially arranged in the axial direction of the sleeve, and the diameter of the first air duct is larger than the diameter of the second air duct, and the second air duct is slidably connected to an air intake cylinder, and a plurality of air intake holes are provided on the circumferential side of the air intake cylinder, and an abutment platform is fixedly connected to the side of the air intake cylinder facing the air intake hole, and an elastic member is fixedly connected between an end of the first air duct close to the air intake hole and the abutment platform.

[0014] Furthermore, the bottom wall of the cooling tank is provided with a plurality of cooling baffles parallel to each other, and the cooling baffles are parallel to the axis of the liquid inlet hole and the liquid discharge hole, and a cooling channel is formed between two adjacent cooling baffles, and the two ends of the cooling channel are respectively connected to the liquid inlet hole and the liquid discharge hole;

[0015] The bottom wall of the cooling trough is also provided with a diverter frame, and a plurality of cooling baffles are arranged on opposite sides of the diverter frame. A guide portion inclined along both sides of the liquid inlet hole is provided on one side of the diverter frame close to the liquid inlet hole, and the guide portion is arranged toward the cooling baffle.

[0016] Furthermore, the diverter frame is provided with a liquid inlet at one end close to the liquid inlet hole, and a liquid outlet is opened at one end of the diverter frame away from the liquid inlet, the liquid inlet is arranged corresponding to the liquid inlet hole, and the liquid outlet is arranged corresponding to the liquid discharge hole, wherein the width of the liquid inlet is smaller than the diameter of the liquid inlet hole, and the width of the liquid outlet is larger than the width of the liquid inlet.

[0017] Furthermore, a plurality of mutually parallel diverter baffles are arranged on the side of the diverter frame away from the cooling baffle, and the diverter baffles are arranged parallel to the cooling baffles, and a plurality of the diverter baffles are fixedly connected to the cooling groove, and a diverter channel is formed between two adjacent diverter baffles, and the opposite ends of the diverter channel are respectively connected to the liquid inlet and the liquid outlet.

[0018] Furthermore, a spiral guide groove is provided on the inner wall of the drain hose, the pitch of the spiral guide groove gradually increases from one end close to the drain hole to an end away from the drain hole, and a plurality of flow rate separation plates are fixedly provided on the inner edge of the spiral guide groove, and the inclination angles of the plurality of flow rate separation plates gradually increase in the direction away from the drain hole to accelerate the coolant flowing through the drain hose.

[0019] Furthermore, the inner wall of the cooling groove is fixedly provided with a plurality of staggered accelerating guide ribs along the direction of the cooling flow channel, the height of the accelerating guide ribs gradually decreases from one end close to the liquid inlet hole toward one end of the liquid discharge hole, and a plurality of disruptive flow grooves are provided on one side of the accelerating guide ribs, and the disruptive flow grooves are staggered with the streamline direction of the cooling flow channel.

[0020] The present invention also provides a server, comprising a PCBA and the flexible liquid cooling structure as described above;

[0021] The PCBA comprises a PCB and a chip, the PCB is fixedly connected to the chip, and the flexible liquid cooling structure is fixedly arranged on an end surface of the PCB away from the chip.

[0022] Beneficial effects:

[0023] In the present invention, a jet assembly is provided at the liquid inlet hole of the flexible liquid cooling structure, and the tapered structure of the liquid inlet pipe portion, the contraction pipe portion and the diffusion pipe portion of the jet assembly is utilized to effectively improve the flow rate of the coolant. When the coolant passes through the contraction pipe portion, the flow rate is significantly accelerated due to the gradual reduction of the channel cross section. At the same time, the air intake hole further guides the air to mix into the coolant through the negative pressure effect, thereby forming a stronger jet effect, so that the coolant can flow quickly through the entire cooling cavity, effectively reducing the liquid retention problem caused by insufficient flow rate, thereby achieving uniform distribution of the coolant. In addition, a flexible connecting belt is fixedly connected between two adjacent flexible substrates to realize the change of the shape of the liquid cooling plate. By fixedly connecting the drain hose between the adjacent flexible substrates and the liquid inlet pipe portion, it is ensured that the coolant always maintains a high flow rate during the entire circulation process while forming a continuous modular cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of a flexible liquid cooling structure of the present invention;

[0025] Figure 2 is a schematic diagram of a top view of the structure of a flexible substrate of the present invention;

[0026] Figure 3 is a schematic structural diagram of a flexible substrate of the present invention;

[0027] Figure 4 is a schematic structural diagram of the jet assembly of the present invention;

[0028] Figure 5 is a schematic cross-sectional structure diagram of the jet assembly of the present invention;

[0029] Figure 6 is a schematic diagram of a transmission component in a fluidic assembly of the present invention;

[0030] Figure 7 It is a schematic cross-sectional structure diagram of the backflow prevention component of the present invention.

[0031] Among them: 1. flexible substrate; 101. cooling groove; 102. liquid inlet hole; 103. liquid discharge hole; 2. flexible connecting belt; 3. cover plate; 4. jet assembly; 401. liquid inlet pipe; 402. contraction pipe; 403. diffusion pipe; 404. air intake hole; 405. adjustment box; 406. motor; 407. support frame; 408. rotating shaft; 409. blade; 410. driven gear; 411. driving gear; 412 , first transition gear; 413, second transition gear; 5, drain hose; 6, backflow prevention assembly; 601, sleeve; 602, first air duct; 603, second air duct; 604, air inlet cylinder; 605, air inlet hole; 606, abutment platform; 607, elastic member; 7, cooling baffle; 8, cooling channel; 9, diverter frame; 91, guide part; 92, liquid inlet; 93, liquid outlet; 10, diverter baffle; 11, diverter channel.

[0032] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments. DETAILED DESCRIPTION

[0033] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] Embodiment 1

[0038] Reference Figures 1 to 5 The present invention proposes a flexible liquid cooling structure, comprising a plurality of flexible substrates 1, a flexible connecting belt 2 is fixedly connected between two adjacent flexible substrates 1, a cooling groove 101 is opened on the upper end surface of the flexible substrate 1, and a cover plate 3 is fixedly arranged on the upper end surface of the flexible substrate 1, and the cooling groove 101 and the cover plate 3 form a cooling cavity;

[0039] The cooling tank 101 is provided with a liquid inlet hole 102 and a liquid discharge hole 103 on two opposite sides thereof. The liquid inlet hole 102 is fixedly connected to a jet assembly 4, and the liquid discharge hole 103 is fixedly connected to a liquid discharge hose 5.

[0040] The jet assembly 4 includes a liquid inlet pipe portion 401, a contraction pipe portion 402 and a diffusion pipe portion 403 which are connected in sequence, the diffusion pipe portion 403 is fixedly connected to the liquid inlet hole 102, the liquid inlet pipe portion 401 and the diffusion pipe portion 403 both contract toward the contraction pipe portion 402, and one side of the contraction pipe portion 402 is connected to an air suction hole 404 to accelerate the coolant flowing through the jet assembly 4, wherein the discharge hose 5 between two adjacent flexible substrates 1 is fixedly connected to the liquid inlet pipe portion 401.

[0041] In the above embodiment, two adjacent flexible substrates 1 are fixedly connected by a flexible connecting belt 2 to form a modular overall structure. The number of flexible substrates 1 can be changed according to actual application requirements, and the length of the flexible liquid cooling structure can be flexibly set through the connection of the flexible connecting belt 2. The material of the flexible substrate 1 can be a polymer-based composite material or a thermoplastic polyurethane (TPU) composite material, for example, with silicone as the matrix and embedded metal powder or carbon nanotubes, which can improve the thermal conductivity of the material while maintaining softness and bending properties.

[0042] The upper end surface of each flexible substrate 1 is provided with a cooling groove 101, which is used to accommodate and guide the flow of the cooling liquid. The upper end of the cooling groove 101 is covered and fixed with a cover plate 3, and the bottom end of the cover plate 3 is provided with a sealing ring tightly engaged with the cooling groove 101. The cover plate 3 and the cooling groove 101 together form a closed cooling cavity. The cooling cavity fully utilizes the space of the cooling groove 101 in structure, ensuring that the cooling liquid can flow quickly in the cooling cavity, thereby effectively covering the heat source area and achieving uniform heat dissipation.

[0043] On both sides of the cooling tank 101, a liquid inlet hole 102 and a liquid discharge hole 103 are respectively provided for the input and output of the coolant. The liquid inlet hole 102 is fixedly connected with a jet assembly 4, and the jet assembly 4 includes a liquid inlet pipe part 401, a contraction pipe part 402 and a diffusion pipe part 403 connected in sequence. The liquid inlet pipe part 401 and the diffusion pipe part 403 of the jet assembly 4 gradually contract toward the contraction pipe part 402, forming a gradually narrowing structural design. In the process of the coolant entering the jet assembly 4, the coolant is first guided into the contraction pipe part 402 through the liquid inlet pipe part 401. In this process, the flow rate of the coolant is significantly increased due to the gradual reduction of the channel cross section. In addition, an air intake hole 404 is provided on one side of the contraction pipe part 402. When the coolant passes through the contraction pipe part 402 at a high speed, the air intake hole 404 guides a certain amount of air into the contraction pipe part 402 to mix with the coolant, thereby further increasing the flow rate of the coolant. The flow rate of the coolant has been greatly increased before entering the cooling chamber, forming a powerful jet effect, which can quickly cover the heat source area in the cooling chamber and effectively avoid local retention of coolant due to insufficient flow rate.

[0044] The setting of the diffuser tube portion 403 further optimizes the flow path of the coolant. In the process of the coolant entering the cooling cavity from the contraction tube portion 402, the gradual expansion of the diffuser tube portion 403 can effectively reduce the flow resistance of the coolant while maintaining a high flow rate state of the coolant.

[0045] After passing through the cooling cavity, the coolant flows out through the drain hole 103 provided on the other side of the cooling groove 101. The drain hole 103 is fixedly connected with a drain hose 5 for guiding the coolant to the liquid inlet pipe 401 in the next flexible substrate 1 module. The fixed connection between the drain hose 5 and the liquid inlet pipe 401 ensures the continuous circulation of the coolant between the modules. The flexible structure of the drain hose 5 can not only adapt to the overall bending and deformation of the flexible substrate 1, but also ensure that the flow rate of the coolant remains stable under the condition of multiple modules in series, avoiding the uneven heat dissipation caused by uneven liquid flow rate.

[0046] In summary, by arranging the jet component 4 at the liquid inlet hole 102 of the flexible liquid cooling structure, and utilizing the tapered structure of the liquid inlet pipe portion 401, the contraction pipe portion 402 and the diffusion pipe portion 403 of the jet component 4, the flow rate of the coolant is effectively improved. When the coolant passes through the contraction pipe portion 402, the flow rate is significantly accelerated due to the gradual reduction of the channel cross section. At the same time, the air intake hole 404 further guides the air to mix into the coolant through the negative pressure effect, forming a stronger jet effect, so that the coolant can flow quickly through the entire cooling cavity, effectively reducing the liquid retention problem caused by insufficient flow rate, thereby achieving uniform distribution of the coolant; in addition, the flexible connecting belt 2 is fixedly connected between the two adjacent flexible substrates 1 to realize the change of the shape of the liquid cooling plate, and the drainage hose 5 between the adjacent flexible substrates 1 is fixedly connected to the liquid inlet pipe portion 401 to ensure that the coolant always maintains a high flow rate during the entire circulation process while forming a continuous modular cooling system.

[0047] refer to Figure 4 and Figure 5 In one embodiment, a hollow regulating box 405 is connected to one side of the shrinkable tube portion 402, and an air suction hole 404 is opened on one side of the regulating box 405, and the air suction hole 404 is connected to the inside of the shrinkable tube;

[0048] A motor 406 is fixedly connected to the side of the regulating box 405 away from the air intake hole 404, and the jet assembly 4 also includes a support frame 407, which is fixedly arranged on the inner wall of the shrinkable tube part 402, and the support frame 407 is rotatably connected to a rotating shaft 408 coaxially arranged with the shrinkable tube part 402, and a paddle 409 is connected to one end of the rotating shaft 408 facing the liquid inlet hole 102, and the end of the rotating shaft 408 away from the paddle 409 is connected to the driving end of the motor 406.

[0049] In the above embodiment, the need to further increase the flow rate of the coolant is solved by connecting a hollow regulating box 405 to one side of the shrinkable tube portion 402. An air intake hole 404 is provided on one side of the regulating box 405, and the air intake hole 404 is connected to the inside of the shrinkable tube. When the coolant passes through the shrinkable tube portion 402 at a high speed, a low-pressure area is generated, so that external air is introduced into the regulating box 405 through the air intake hole 404 and mixed into the coolant, thereby forming a mixed fluid that strengthens the jet.

[0050] The other side of the regulating box 405 is fixedly connected to a motor 406, which further improves the fluid dynamic performance of the jet assembly 4 by driving the internal rotating shaft 408. The rotating shaft 408 is coaxially arranged with the contraction tube portion 402, and its end facing the liquid inlet hole 102 is connected to a paddle 409, which is driven by the motor 406 to generate a rotational motion. In the process of the coolant flowing into the contraction tube portion 402, the rotation of the paddle 409 will apply additional power to the coolant, so that the coolant obtains a higher flow rate. The design of the paddle 409 not only enhances the acceleration effect of the coolant in the contraction tube, but also further reduces the risk of stagnation of the coolant in the flow channel by disturbing the fluid.

[0051] The support frame 407 is fixedly arranged on the inner wall of the shrinkable tube portion 402 to stabilize the position of the rotating shaft 408 and ensure the rotation stability of the rotating shaft 408. The precise design of the support frame 407 ensures the coaxial alignment of the rotating shaft 408 and the shrinkable tube portion 402, thereby effectively avoiding the fluid power loss caused by the deviation of the rotating shaft 408.

[0052] refer to Figure 5 and Figure 6 In one example, the end of the rotating shaft 408 away from the paddle 409 is connected to a driven gear 410, the driving shaft of the motor 406 is inserted into the adjusting box 405, and the driving shaft of the motor 406 is connected to a driving gear 411, the driving gear 411 is meshed with a first transition gear 412, the first transition gear 412 is coaxially connected to a second transition gear 413, and the second transition gear 413 is meshed with the driven gear 410, wherein the number of teeth of the driving gear 411 is less than the number of teeth of the first transition gear 412, the number of teeth of the second transition gear 413 is less than the number of teeth of the first transition gear 412, and the number of teeth of the driven gear 410 is more than the number of teeth of the second transition gear 413.

[0053] In the above embodiment, the power transmission between the motor 406 and the rotating shaft 408 is further optimized through a complex gear transmission mechanism, ensuring that the blades 409 in the jet assembly 4 can obtain a stable and efficient driving force.

[0054] The end of the rotating shaft 408 away from the blade 409 is connected to the driven gear 410, and the driving shaft of the motor 406 is inserted into the adjustment box 405 and connected to the driving gear 411. The driving gear 411 is connected to the first transition gear 412 by meshing, and the first transition gear 412 is coaxially connected to the second transition gear 413, and the second transition gear 413 is finally meshed with the driven gear 410. Through the multi-stage gear transmission mechanism, the rotation force of the driving shaft of the motor 406 is transmitted to the rotating shaft 408 step by step, and finally drives the rotation of the blade 409.

[0055] The number of teeth of the driving gear 411 is less than that of the first transition gear 412, so that the rapid rotation of the driving gear 411 can be converted into a slower and more stable rotation force of the first transition gear 412 through the difference in the number of teeth. Similarly, the number of teeth of the second transition gear 413 is less than that of the first transition gear 412, and the torque output capacity of the transmission is further improved through this difference in the number of teeth. The number of teeth of the driven gear 410 is greater than that of the second transition gear 413, which further amplifies the torque of the rotating shaft 408, allowing the blades 409 to rotate under high torque conditions, thereby enhancing the driving effect on the coolant.

[0056] refer to Figure 4 , Figure 5 and Figure 7 In one embodiment, the side of the air intake hole 404 away from the motor 406 is fixedly connected with an anti-backflow component 6, and the anti-backflow component 6 includes a sleeve 601, and the sleeve 601 is axially penetrated with a first air duct 602 and a second air duct 603 which are coaxially arranged, and the diameter of the first air duct 602 is larger than the diameter of the second air duct 603, and the second air duct 603 is slidably connected with an air inlet cylinder 604, and a plurality of air inlet holes 605 are provided on the circumferential side of the air inlet cylinder 604, and a side of the air inlet cylinder 604 facing the air intake hole 404 is fixedly connected with an abutment platform 606, and an elastic member 607 is fixedly connected between the end of the first air duct 602 close to the air intake hole 404 and the abutment platform 606.

[0057] In the above embodiment, by setting an anti-backflow component 6 on the side of the air intake hole 404 away from the motor 406, the problem of gas backflow that may occur in the air intake hole 404 during operation is effectively solved, ensuring that the inhaled gas can continuously and stably enter the jet component 4 and avoiding the influence of coolant backflow on system performance.

[0058] The anti-backflow assembly 6 includes a sleeve 601, and two coaxial airways are arranged in the axial direction of the sleeve 601, namely the first airway 602 and the second airway 603. The diameter of the first airway 602 is larger than the diameter of the second airway 603, forming a gradually shrinking channel structure, which can effectively limit the backflow phenomenon during the gas flow. The second airway 603 is slidably connected with an air inlet cylinder 604, and the structure of the air inlet cylinder 604 further optimizes the flow path of the gas. A number of air inlet holes 605 are evenly distributed on the circumference thereof, so that the gas can enter the air inlet cylinder 604 from multiple directions, while avoiding the decrease in the suction efficiency caused by the turbulent air flow.

[0059] The side of the air inlet cylinder 604 facing the air intake hole 404 is fixedly connected with an abutment platform 606, and an elastic member 607 is abutted against the abutment platform 606 and one end of the first air passage 602 close to the air intake hole 404. The elastic member 607 is a compression spring. When the air inlet cylinder 604 is subjected to the suction force of the shrinkable tube part 402, it overcomes the pressure of the elastic member 607, so that the air inlet hole 605 moves to the first air passage 602, so that air enters the shrinkable tube part 402. When the coolant does not need to flow, the abutment platform 606 is subjected to the pressure of the elastic member 607 again, and abuts against the second air passage 603, so that air cannot enter, and the coolant in the cooling cavity cannot leak from the air passage.

[0060] refer to Figures 1 to 3 In one embodiment, the bottom wall of the cooling groove 101 is provided with a plurality of cooling baffles 7 parallel to each other, and the cooling baffles 7 are parallel to the axes of the liquid inlet hole 102 and the liquid discharge hole 103, and a cooling channel 8 is formed between two adjacent cooling baffles 7, and the two ends of the cooling channel 8 are respectively connected to the liquid inlet hole 102 and the liquid discharge hole 103.

[0061] In the above embodiment, by arranging a plurality of mutually parallel cooling baffles 7 on the bottom wall of the cooling groove 101, the flow path of the coolant in the cooling chamber is optimized, and the flow rate of the coolant and the heat transfer efficiency are further improved. The design of the cooling baffle 7 not only realizes the effective flow diversion of the fluid in structure, but also fundamentally reduces the turbulence and retention of the fluid that may occur in the cooling chamber.

[0062] The cooling baffle 7 is parallel to the axis of the liquid inlet hole 102 and the liquid discharge hole 103, and a plurality of cooling channels 8 are formed between two adjacent cooling baffles 7. The two ends of the cooling channel 8 are respectively connected to the liquid inlet hole 102 and the liquid discharge hole 103, so that the coolant can be diverted to multiple channels for independent flow after entering the cooling cavity, ensuring that the coolant can evenly cover the entire cooling cavity, avoiding the problem of local heat accumulation caused by insufficient liquid flow rate or uneven distribution. In addition, the parallel cooling baffles 7 standardize the flow path of the coolant, making the flow of the coolant in the cooling cavity smoother, thereby significantly reducing the resistance of the fluid flow. It complements the high-flow rate coolant input of the jet component 4. When the coolant enters the cooling cavity through the jet component 4, it is first diverted to each cooling channel 8. The parallel distribution of each channel ensures the uniformity of the distribution of the coolant, while avoiding the cross-flow and interference of the fluid between the channels, further improving the fluid circulation efficiency.

[0063] In one embodiment, a diverter frame 9 is further provided on the bottom wall of the cooling groove 101, and a plurality of cooling baffles 7 are arranged on opposite sides of the diverter frame 9. A guide portion 91 inclined along both sides of the liquid inlet hole 102 is provided on one side of the diverter frame 9 close to the liquid inlet hole 102, and the guide portion 91 is arranged toward the cooling baffle 7.

[0064] refer to Figures 1 to 3 In the above embodiment, the diverter frame 9 is located in the central area of ​​the bottom wall of the cooling groove 101, and its main function is to preliminarily divert and guide the flow of the coolant. After the coolant enters the cooling chamber, the diverter frame 9 diverts the coolant through its structure, so that the liquid can be evenly distributed in each cooling channel 8, avoiding the coolant from concentrating on a certain side or a certain area at the beginning of the flow, thereby improving the uniformity of the fluid distribution. A guide portion 91 inclined along both sides of the liquid inlet hole 102 is designed on one side of the diverter frame 9 close to the liquid inlet hole 102. The inclined structure of the guide portion 91 is arranged toward the cooling baffle 7, and its function is to guide the coolant to flow along the inclined direction to the area where the cooling baffle 7 is located after the coolant is sprayed into the cooling chamber from the jet assembly 4 at high speed.

[0065] In one embodiment, a liquid inlet 92 is provided at one end of the diverter frame 9 close to the liquid inlet hole 102, and a liquid outlet 93 is provided at one end of the diverter frame 9 away from the liquid inlet 92. The liquid inlet 92 is arranged corresponding to the liquid inlet hole 102, and the liquid outlet 93 is arranged corresponding to the liquid discharge hole 103, wherein the width of the liquid inlet 92 is smaller than the diameter of the liquid inlet hole 102, and the width of the liquid outlet 93 is larger than the width of the liquid inlet 92.

[0066] In the above embodiment, a liquid inlet 92 is provided at one end of the diverter frame 9 close to the liquid inlet hole 102, and the liquid inlet 92 is connected to the liquid inlet hole 102 correspondingly, ensuring that the coolant can directly enter the interior of the diverter frame 9 from the jet assembly 4 at high speed. The width of the liquid inlet 92 is smaller than the diameter of the liquid inlet hole 102, forming a contracted flow channel entrance, which further accelerates the flow of the liquid when the coolant enters the diverter frame 9, and provides stronger kinetic energy for subsequent liquid diversion. Through this contraction effect, the coolant can enter the diverter frame 9 at a higher speed, thereby reducing the probability of stagnation. Secondly, the width of the liquid inlet 92 is smaller than the diameter of the liquid inlet hole 102, which can enable part of the coolant to flow to various positions of the cooling chamber along the inclined guides 91 on both sides of the diverter frame 9, ensuring uniform cooling.

[0067] The end of the diverter frame 9 away from the liquid inlet 92 is provided with a liquid outlet 93, which is connected to the drain hole 103 to guide the coolant to flow out of the diverter frame 9. The width of the liquid outlet 93 is greater than the width of the liquid inlet 92. The size difference between the liquid inlet 92 and the liquid outlet 93 can reduce the flow resistance of the coolant inside the diverter frame 9, and ensure that the liquid flows more smoothly when leaving the diverter frame 9, so as to achieve efficient flow and uniform distribution of the coolant.

[0068] In one embodiment, a plurality of mutually parallel diverter baffles 10 are arranged on the side of the diverter frame 9 facing away from the cooling baffle 7, and the diverter baffles 10 are arranged parallel to the cooling baffle 7, and a plurality of the diverter baffles 10 are fixedly connected to the cooling groove 101, and a diverter channel 11 is formed between two adjacent diverter baffles 10, and the opposite ends of the diverter channel 11 are respectively connected to the liquid inlet 92 and the liquid outlet 93.

[0069] In the above embodiment, the side of the diverter frame 9 away from the cooling baffle 7 is the interior surrounded by the diverter frame 9, and a plurality of mutually parallel diverter baffles 10 are provided to form a plurality of diverter channels 11, and the two ends of the diverter channels 11 are respectively connected to the liquid inlet 92 and the liquid outlet 93, so as to ensure that after the coolant enters from the liquid inlet 92, it is guided to each diverter channel 11 in the diverter frame 9 for uniform distribution.

[0070] By dividing the coolant into multiple parallel flow paths, the flow divider 10 effectively reduces turbulence and interference during the flow of the liquid, ensuring efficient flow of the liquid. In addition, the coolant in the flow divider 11 can be evenly and quickly transferred to the entire cooling cavity, avoiding the occurrence of local overheating.

[0071] In one embodiment, a spiral guide groove is provided on the inner wall of the drain hose 5, and the pitch of the spiral guide groove gradually increases from the end close to the drain hole 103 to the end away from the drain hole 103, and a plurality of flow rate separation plates are fixedly provided on the inner edge of the spiral guide groove, and the inclination angles of the plurality of flow rate separation plates gradually increase in the direction away from the drain hole 103 to accelerate the coolant flowing through the drain hose 5.

[0072] In the above embodiment, the drain hose 5 can significantly improve the flow efficiency of the coolant by providing a spiral guide groove and a flow rate separation plate. The spiral guide groove is arranged along the inner wall of the drain hose 5. Starting from the end close to the drain hole 103, the pitch gradually increases, which promotes the uniform flow of the coolant and allows the liquid to be discharged more stably during the drainage process.

[0073] Several flow rate separation sheets are fixedly arranged on the inner edge of the spiral guide groove, and the inclination angle of the flow rate separation sheet gradually increases in the direction away from the drain hole 103. Such a structure provides additional driving force, which can further accelerate the flow rate of the coolant flowing through the drain hose 5. The flow rate separation sheet changes the flow path of the liquid and increases the contact area of ​​the fluid, so that the liquid is slightly disturbed when flowing through, reducing the possibility of stagnation and pressure drop. The synergistic effect of the spiral guide groove and the flow rate separation sheet not only effectively promotes the flow rate of the coolant when it is discharged, but also helps the coolant to enter the next circulation unit more quickly, reducing the flow resistance of the liquid in the hose.

[0074] In one embodiment, the inner wall of the cooling groove 101 is fixedly provided with a plurality of staggered accelerating guide ribs along the direction of the cooling channel 8, and the height of the accelerating guide ribs gradually decreases from one end close to the liquid inlet hole 102 toward one end of the liquid discharge hole 103, and a plurality of disruptive flow grooves are provided on one side of the accelerating guide ribs, and the disruptive flow grooves are staggered with the streamline direction of the cooling channel 8.

[0075] In the above embodiment, the accelerating guide ribs can optimize the flow path of the coolant and increase the flow rate. The accelerating guide ribs are fixedly arranged along the cooling channel 8 in a staggered arrangement, and the coolant flow path is fine-tuned to ensure that the fluid flow is more orderly and efficient.

[0076] The height of the accelerating guide ribs gradually decreases from the end close to the liquid inlet hole 102 to the end of the liquid discharge hole 103, and the gradual height helps to maintain the stability of the liquid flow rate. Specifically, the higher guide ribs produce an initial guiding effect near the liquid inlet hole 102, accelerating the liquid to flow into the cooling channel 8. As the height of the guide ribs decreases, the liquid flow is smoothly guided and the flow resistance is reduced, so that the cooling fluid maintains efficient kinetic energy conversion throughout the process of passing through the cooling groove 101, thereby improving the overall flow rate.

[0077] In addition, a number of flow-disturbing grooves are provided on one side of the acceleration guide rib, which are arranged in a staggered manner with the streamline direction of the cooling channel 8. The flow-disturbing grooves break the laminar state of the liquid by forming local turbulence, promote the mixing of the fluid, and improve the heat exchange efficiency of the fluid.

[0078] Embodiment 2

[0079] The present invention also provides a server, comprising a PCBA and the flexible liquid cooling structure as described above;

[0080] The PCBA comprises a PCB and a chip, the PCB is fixedly connected to the chip, and the flexible liquid cooling structure is fixedly arranged on an end surface of the PCB away from the chip.

[0081] In the above embodiment, a flexible liquid cooling structure is applied to a server, and efficient thermal management is performed by combining the flexible liquid cooling structure. The core components of the server include PCBA, which integrates components of PCB (printed circuit board) and multiple chips. PCB, as a carrier platform for electronic components, is fixedly connected to multiple chips, and the chips generate a large amount of heat energy when they are in operation. The flexible liquid cooling structure is fixedly arranged on one end face of the PCB away from the chip, so that the flexible liquid cooling structure can directly contact and conduct the heat energy generated on the PCB. The flexible liquid cooling structure meets the internal configuration requirements of the server, that is, its flexible substrate 1 and the integrated guide system can adapt to the complex shape of the PCB surface and can be flexibly arranged in a relatively limited space, ensuring the operating stability of the server when working under high load.

[0082] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A flexible liquid cooling structure, characterized in that: Comprising a plurality of flexible substrates (1), a flexible connecting belt (2) being fixedly connected between two adjacent flexible substrates (1), a cooling groove (101) being provided on the upper end surface of the flexible substrate (1), and a cover plate (3) being fixedly provided on the upper end surface of the flexible substrate (1), the cooling groove (101) and the cover plate (3) forming a cooling cavity; Two opposite side surfaces of the cooling groove (101) are respectively provided with a liquid inlet hole (102) and a liquid discharge hole (103); the liquid inlet hole (102) is fixedly connected to a jet assembly (4), and the liquid discharge hole (103) is fixedly connected to a liquid discharge hose (5); The jet assembly (4) comprises a liquid inlet pipe portion (401), a contraction pipe portion (402) and a diffusion pipe portion (403) which are connected in sequence, the diffusion pipe portion (403) being fixedly connected to the liquid inlet hole (102), the liquid inlet pipe portion (401) and the diffusion pipe portion (403) both contract toward the contraction pipe portion (402), and one side of the contraction pipe portion (402) is connected to an air intake hole (404) to accelerate the coolant flowing through the jet assembly (4), wherein a liquid discharge hose (5) between two adjacent flexible substrates (1) is fixedly connected to the liquid inlet pipe portion (401); One side of the shrinkable tube portion (402) is connected to a hollow regulating box (405), one side of the regulating box (405) is provided with the air suction hole (404), and the air suction hole (404) is communicated with the interior of the shrinkable tube; A motor (406) is fixedly connected to a side of the regulating box (405) away from the air intake hole (404); the jet assembly (4) further comprises a support frame (407); the support frame (407) is fixedly arranged on the inner wall of the shrinkable tube portion (402); the support frame (407) is rotatably connected to a rotating shaft (408) coaxially arranged with the shrinkable tube portion (402); an end of the rotating shaft (408) facing the liquid inlet hole (102) is connected to a paddle (409); and an end of the rotating shaft (408) away from the paddle (409) is connected to a driving end of the motor (406); One end of the rotating shaft (408) away from the blade (409) is connected to a driven gear (410), the driving shaft of the motor (406) is inserted into the regulating box (405), and the driving shaft of the motor (406) is connected to a driving gear (411), the driving gear (411) is meshed with a first transition gear (412), the first transition gear (412) is coaxially connected to a second transition gear (413), and the second transition gear (413) is meshed with the driven gear (410), wherein the number of teeth of the driving gear (411) is less than the number of teeth of the first transition gear (412), the number of teeth of the second transition gear (413) is less than the number of teeth of the first transition gear (412), and the number of teeth of the driven gear (410) is more than the number of teeth of the second transition gear (413).

2. A flexible liquid cooling structure according to claim 1, characterized in that: A backflow prevention component (6) is fixedly connected to a side of the air intake hole (404) away from the motor (406), and the backflow prevention component (6) comprises a sleeve (601), and a first air duct (602) and a second air duct (603) are coaxially arranged on the axial direction of the sleeve (601), the diameter of the first air duct (602) is larger than the diameter of the second air duct (603), and the second air duct (603) is slidably connected to an air intake cylinder (604), and a plurality of air intake holes (605) are provided on the circumferential side of the air intake cylinder (604), and a contact platform (606) is fixedly connected to a side of the air intake cylinder (604) facing the air intake hole (404), and an elastic member (607) is fixedly connected between an end of the first air duct (602) close to the air intake hole (404) and the contact platform (606).

3. A flexible liquid cooling structure according to claim 1, characterized in that: The bottom wall of the cooling groove (101) is provided with a plurality of cooling baffles (7) parallel to each other, and the cooling baffles (7) are parallel to the axes of the liquid inlet hole (102) and the liquid discharge hole (103), and a cooling channel (8) is formed between two adjacent cooling baffles (7), and the two ends of the cooling channel (8) are respectively connected to the liquid inlet hole (102) and the liquid discharge hole (103); The bottom wall of the cooling groove (101) is further provided with a diverter frame (9), and a plurality of cooling baffles (7) are arranged on opposite sides of the diverter frame (9). A guide portion (91) inclined along both sides of the liquid inlet hole (102) is arranged on one side of the diverter frame (9) close to the liquid inlet hole (102), and the guide portion (91) is arranged toward the cooling baffle (7).

4. A flexible liquid cooling structure according to claim 3, characterized in that: The diverter frame (9) is provided with a liquid inlet (92) at one end close to the liquid inlet hole (102), and a liquid outlet (93) is provided at one end of the diverter frame (9) away from the liquid inlet (92). The liquid inlet (92) is arranged corresponding to the liquid inlet hole (102), and the liquid outlet (93) is arranged corresponding to the liquid discharge hole (103), wherein the width of the liquid inlet (92) is smaller than the diameter of the liquid inlet hole (102), and the width of the liquid outlet (93) is larger than the width of the liquid inlet (92).

5. A flexible liquid cooling structure according to claim 4, characterized in that: A plurality of mutually parallel diverter baffles (10) are arranged on the side of the diverter frame (9) facing away from the cooling baffle (7), and the diverter baffles (10) are arranged in parallel with the cooling baffle (7). A plurality of the diverter baffles (10) are fixedly connected to the cooling groove (101), and a diverter channel (11) is formed between two adjacent diverter baffles (10). The opposite ends of the diverter channel (11) are respectively connected to the liquid inlet (92) and the liquid outlet (93).

6. A flexible liquid cooling structure according to claim 1, characterized in that: The inner wall of the drainage hose (5) is provided with a spiral guide groove, the pitch of which gradually increases from an end close to the drainage hole (103) to an end away from the drainage hole (103), and a plurality of flow rate separation plates are fixedly provided on the inner edge of the spiral guide groove, the inclination angles of the plurality of flow rate separation plates gradually increase in a direction away from the drainage hole (103), so as to accelerate the coolant flowing through the drainage hose (5).

7. A flexible liquid cooling structure according to claim 3, characterized in that: The inner wall of the cooling groove (101) is fixedly provided with a plurality of staggered accelerating guide ribs along the direction of the cooling flow channel (8), the height of the accelerating guide ribs gradually decreasing from an end close to the liquid inlet hole (102) toward an end of the liquid discharge hole (103), and a plurality of disrupting flow grooves are provided on one side of the accelerating guide ribs, the disrupting flow grooves being staggered with the streamline direction of the cooling flow channel (8).

8. A server, characterized in that: Comprising a PCBA and a flexible liquid cooling structure as claimed in any one of claims 1 to 7; The PCBA comprises a PCB and a chip, the PCB is fixedly connected to the chip, and the flexible liquid cooling structure is fixedly arranged on an end surface of the PCB away from the chip.

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