Liquid storage structure and heat pipe heat exchange device

Abstract

The application relates to a liquid storage structure and a heat pipe heat exchange device. The liquid storage structure comprises a liquid storage tank, a liquid blocking cover and a plurality of layer plates. The liquid blocking cover is arranged at an opening of the liquid storage tank. The liquid blocking cover is provided with a backflow hole for connecting the liquid storage tank and an external space. At least part of the layer plates are arranged in the backflow hole. The plurality of layer plates are arranged in a spacing mode along a through direction of the backflow hole to form containing cavities. Each layer plate is respectively provided with a through hole. The through hole can connect adjacent containing cavities. The liquid storage structure and the heat pipe heat exchange device provided by the application solve the problem that, in the existing heat pipe phase change heat exchange mode, liquid working medium can quickly leave an evaporation section under working conditions such as acceleration, deceleration and side leaning, so that a power element lacks heat absorption of the liquid working medium and dry burning occurs.

Description

Technical Field

[0001] This application relates to the field of thermal management device technology, and in particular to a liquid storage structure and a heat pipe heat exchange device. Background Technology

[0002] The three-electric systems (battery, motor, and electronic control) on humanoid robots and low-altitude aircraft are the primary targets of thermal management. The core components of the motor are IGBTs or SiC MOSFETs, and the core components of the electronic control system are chips. Therefore, the main heat-generating components of the three-electric systems can be categorized into two main power components: batteries and chips. Among the thermal management technologies for the three-electric systems, the heat pipe phase change heat transfer method (the heat pipe mainly includes an evaporation section and a condensation section; the liquid working fluid in the evaporation section absorbs heat and vaporizes, then enters the condensation section, and releases heat and liquefies, becoming a liquid working fluid that flows back to the evaporation section) has high heat transfer efficiency, small size, and light weight. Furthermore, the thermal resistance of the entire heat transfer chain is relatively low, making it one of the most promising thermal management technologies for the three-electric systems.

[0003] However, humanoid robots and low-altitude aircraft are dynamic machines that often undergo acceleration, deceleration, tilting, flipping, or even inversion. The use of immersion heat pipe phase change heat transfer methods (where the power element is immersed in the liquid working fluid of the heat pipe heat exchanger) can easily lead to a large amount of liquid working fluid leaving the evaporation section quickly, causing the power element to dry-burn due to leaving the liquid surface. Summary of the Invention

[0004] Therefore, it is necessary to provide a liquid storage structure and a heat pipe heat exchange device to solve the problem that existing heat pipe phase change heat exchange methods are prone to the liquid working fluid leaving the evaporation section under conditions such as acceleration, deceleration and tilting, which leads to the power element lacking heat absorption by the liquid working fluid and causing dry burning.

[0005] The liquid storage structure provided in this application includes a liquid storage tank, a liquid baffle cover, and multiple layers. The liquid baffle cover is disposed at the opening of the liquid storage tank and has a reflux hole for connecting the liquid storage tank and the external space. At least some of the layers are disposed in the reflux hole. Multiple layers are spaced apart along the through direction of the reflux hole to form a receiving cavity. Furthermore, each layer is provided with a through hole that can connect to adjacent receiving cavities.

[0006] In one embodiment, the center lines of the through holes in adjacent layers do not coincide.

[0007] In one embodiment, the inner diameter A of the reflux hole and the inner diameter B of the through hole satisfy that A ≥ 3B and 2mm ≤ B ≤ 5mm.

[0008] In one embodiment, the flow area of ​​each through hole decreases from one end communicating with the external space to one end communicating with the liquid storage tank.

[0009] In one embodiment, the plate is in the shape of a tapered tube and forms a tapered tube section around the through hole. The tapered tube section has a tapered tube cavity and a first opening and a second opening located at both ends of the tapered tube cavity along its axial direction. The through hole is located at one end of the tapered tube section near the liquid storage tank and forms the first opening. The flow area of ​​the first opening is smaller than the flow area of ​​the second opening. Along the path from one end communicating with the external space to one end communicating with the liquid storage tank, the flow area of ​​the tapered tube cavity tends to decrease.

[0010] In one embodiment, one end of the tapered tube with a through hole passes through the second opening of the adjacent tapered tube and partially extends into the tapered tube cavity of the adjacent tapered tube.

[0011] In one embodiment, the tapered tube section has a through hole at one end and a second opening of the adjacent tapered tube section spaced apart.

[0012] In one embodiment, a plane perpendicular to the center line of the return hole is defined as a reference plane, and the orthographic projections of each through hole onto the reference plane do not coincide.

[0013] In one embodiment, the centerline of the through hole and the centerline of the return hole do not coincide.

[0014] In one embodiment, there are multiple reflux holes, which are distributed at intervals along the circumference of the liquid baffle, and each reflux hole is provided with multiple layers.

[0015] In one embodiment, the liquid storage structure further includes an installation tube, which is provided in a one-to-one correspondence with the shelf. The installation tube is provided on one side of the shelf and is fixedly connected to the shelf to form a sleeve. The outer diameter of the inner sleeve is smaller than the inner diameter of the outer sleeve, and adjacent sleeves are sleeved together. The inner sleeve and the outer sleeve are fitted together and fixedly connected, or each sleeve is fixedly connected to the liquid baffle cover.

[0016] In one embodiment, the liquid storage structure further includes an extension tube, one end of which is connected to the liquid baffle and communicates with the corresponding reflux hole, and the other end extends toward the bottom of the liquid storage tank. Another part of the shelf is disposed in the extension tube, and adjacent shelves in the extension tube are spaced apart.

[0017] This application also provides a heat pipe heat exchange device, including an evaporation section, a condensation section, a liquid suction spray assembly, and a liquid storage structure as described in any of the above embodiments. The power element is disposed in the evaporation section, and the liquid storage structure is connected to the condensation section through the evaporation section. The liquid suction end of the liquid suction spray assembly is located in the liquid storage tank, and the spray end of the liquid suction spray assembly is located in the evaporation section. The liquid suction spray assembly can absorb liquid working fluid through its liquid suction end and spray it onto the heating surface of the power element through its spray end. The liquid working fluid sprayed onto the heating surface of the power element can absorb heat and vaporize into the condensation section, and after releasing heat and liquefying in the condensation section, it flows back to the evaporation section and flows back to the liquid storage tank again through the return hole.

[0018] Compared with the prior art, the liquid storage structure and heat pipe heat exchange device provided in this application, through the collaborative construction of the liquid baffle and the multi-layer spacer plate in the return hole, reconstructs the single large flow section at the opening of the liquid storage tank into a tortuous, throttling channel composed of multiple accommodating cavities connected in series. This ensures smooth forward return flow (the flow rate of forward return is small and it is not easy to form a liquid film, so the return flow is smoother) while generating multiple obstruction effects on reverse flow.

[0019] Specifically, when the liquid working fluid flows out of the storage tank, it must sequentially pass through the through holes on the shelf to enter the next stage of the receiving cavity. The fluid undergoes jet contraction as it passes through the narrow through holes, and then undergoes significant diffusion upon entering the larger receiving cavity of the next stage; this process repeats itself. Each diffusion generates strong eddies and turbulent kinetic energy dissipation, converting the liquid's kinetic energy into internal energy, thereby gradually weakening the impact of the liquid flow.

[0020] Furthermore, due to the presence of the containment chambers, the instantaneous pressure gradient caused by sudden changes in external inertial forces (such as a robot's abrupt stop) cannot directly act on the liquid surface deep within the storage tank. The pressure wave needs to be transmitted and fill each containment chamber step by step, and this hysteresis effect effectively suppresses the rapid overflow of the liquid.

[0021] In summary, the liquid storage structure of this application, by incorporating multiple staggered layers and through holes within the reflux orifice, effectively reduces the outflow velocity of the liquid working fluid in the storage tank during acceleration, deceleration, tilting, or flipping movements of dynamic machinery such as humanoid robots and low-altitude aircraft. Therefore, even under severe motion conditions, the power components can continuously receive cooling from the liquid working fluid, preventing dry burning caused by the rapid departure of the liquid working fluid from the evaporation section, thus ensuring the stable operation and reliability of the three-electric system. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of a heat pipe heat exchange device according to an embodiment of this application;

[0024] Figure 2 A partial structural cross-sectional view of a heat pipe heat exchange device according to an embodiment of this application;

[0025] Figure 3 A schematic diagram of the assembly structure of the liquid-blocking cover, the diversion protrusion, and the return protrusion according to an embodiment provided in this application;

[0026] Figure 4 for Figure 3 A cross-sectional view of the structure shown;

[0027] Figure 5 A partial cross-sectional view of the liquid-blocking cover according to an embodiment provided in this application;

[0028] Figure 6 A partial cross-sectional view of the liquid-retaining cover according to another embodiment provided in this application;

[0029] Figure 7 A partial cross-sectional view of the liquid-retaining cover according to another embodiment provided in this application;

[0030] Figure 8 A partial structural diagram of a heat pipe heat exchange device according to another embodiment of this application.

[0031] Reference numerals: 100, liquid storage tank; 200, liquid baffle cover; 210, reflux hole; 220, reflux protrusion; 230, diversion protrusion; 240, sealing hole; 300, shelf; 310, receiving cavity; 320, through hole; 330, tapered tube section; 331, tapered tube cavity; 332, first opening; 333, second opening; 400, mounting tube; 500, sleeve; 600, connecting tube; 700, evaporation section; 800, condensation section; 810, condensation channel; 820, outer fin; 900, liquid suction spray assembly; 910, liquid suction end; 920, spray end; 1000, power element; 2000, extension tube; 3000, branching tube. Detailed Implementation

[0032] Current heat pipe phase change heat transfer methods, when applied to dynamic machines such as humanoid robots and low-altitude aircraft, often experience significant challenges due to the frequent acceleration, deceleration, tilting, flipping, and even inversion of these machines. This causes large quantities of liquid working fluid to leave the evaporation section rapidly. Consequently, power components may dry-burn due to insufficient heat absorption from the liquid working fluid, affecting the system's stable operation and reliability.

[0033] For this, please refer to Figures 1-8 This application proposes a liquid storage structure, including a liquid storage tank 100, a liquid-retaining cover 200, and multiple shelves 300. The liquid storage tank 100 is a container with an opening, such as a cylindrical, square, or irregularly shaped cavity. The liquid-retaining cover 200 is disposed at the opening of the liquid storage tank 100, and can be a flat plate or a cover with a specific shape, fixed to the opening of the liquid storage tank 100 by welding, bolting, or snap-fitting. The shelves 300 can be made of metal, ceramic, or polymer materials to ensure sufficient strength and corrosion resistance.

[0034] A liquid-retaining cover 200 is disposed at the opening of the liquid storage tank 100 and has a reflux hole 210 for connecting the liquid storage tank 100 and the external space (which may be the evaporation section 700 or the condensation section 800 of a heat pipe heat exchanger). The reflux hole 210 can be a simple through hole, for example, formed by drilling, stamping, or casting. The shape of the reflux hole 210 can be designed as a circular, square, elliptical, or other geometrically shaped through hole, and the reflux hole 210 can be a straight hole or a curved hole.

[0035] At least some of the shelves 300 are disposed within the reflux hole 210, and multiple shelves 300 are spaced apart along the through direction of the reflux hole 210 to form receiving cavities 310. The shelves 300 can be stacked within the reflux hole 210 and fixed by means of brackets, slots, or welding. For example, multiple annular or disc-shaped shelves 300 can be fabricated and arranged at equal or unequal intervals along the axial direction of the reflux hole 210. Thus, multiple independent receiving cavities 310 are formed between adjacent shelves 300.

[0036] Furthermore, each layer 300 is provided with a through hole 320 (the through hole 320 includes, but is not limited to, cylindrical holes, prismatic holes, or other shapes of through holes, and the through hole 320 can be a straight hole or a curved hole), the through hole 320 being able to connect to the adjacent receiving cavity 310. The through hole 320 can be a hole pre-reserved on the layer 300, for example, formed by laser cutting, stamping, or machining. These through holes 320 can be designed as circular, square, or other shapes of through holes.

[0037] Preferably, the centerlines of the through holes 320 of adjacent layers 300 do not coincide, that is, adjacent through holes 320 are staggered. This staggered arrangement of the through holes 320 can be achieved by setting holes at different positions on different layers 300. For example, the through holes 320 of the first layer 300 can be located at the center, the through holes 320 of the second layer 300 can be located off-center, and the through holes 320 of the third layer 300 can return to the center, or be arranged in a spiral, Z-shape, or other manner. This staggered arrangement requires the liquid working fluid to undergo multiple detours and obstructions during the reflux process.

[0038] However, this is not the only one. In other embodiments, the center lines of the through holes 320 of adjacent layers 300 may also be coincident.

[0039] When the opening of the storage tank 100 faces upward and the inclination angle of the storage tank 100 is less than or equal to a preset angle (the preset angle can be selected from a value between 0 and 90°, excluding the critical value; preferably, the preset angle ranges from 10° to 30°, including the critical value), the liquid working medium in the external space can flow back into the storage tank 100 sequentially through each through hole 320. Under this condition, the liquid working medium mainly relies on gravity to enter the storage tank 100 from the external space through the return hole 210. Due to the connectivity of the through holes 320, the liquid working medium can pass through each receiving cavity 310 and the through holes 320 step by step, and finally collect at the bottom of the storage tank 100.

[0040] When the opening of the storage tank 100 faces upward and the tilt angle of the storage tank 100 is greater than a preset angle, or when the storage tank 100 is flipped so that the opening faces downward (the dividing point between opening upward and opening downward is when the opening faces horizontally, and opening facing horizontally can be classified as a condition where the tilt angle is greater than the preset angle), the liquid working medium in the storage tank 100 can submerge the return hole 210, and the liquid baffle 200 can reduce the outflow velocity of the liquid working medium in the storage tank 100 (flowing from the storage tank 100 to the external space). Under conditions of large tilt angle or flipping, the liquid working medium in the storage tank 100 will be subjected to inertial force or gravity, attempting to flow out from the return hole 210. At this time, the shelf 300 in the return hole 210 and the staggered through hole 320 form a tortuous channel, increasing the resistance to the outflow of the liquid working medium. The liquid working fluid needs to overcome the obstruction and deflection of multiple layers 300 in order to flow from the storage tank 100 to the external space, thereby effectively reducing its outflow velocity.

[0041] It is important to note that the liquid working fluid is the fluid that circulates heat absorption and release in the heat pipe heat exchange device. Examples include water, ammonia, acetone, and environmentally friendly refrigerants (GWP and ODP values ​​meet PFAS requirements). It switches between different phases to achieve heat transfer.

[0042] Compared with the prior art, the liquid storage structure and heat pipe heat exchange device provided in this application, through the collaborative construction of the liquid baffle 200 and the multi-layer spacer plate 300 in the return hole 210, reconstructs the single large flow section at the opening of the liquid storage tank 100 into a tortuous, throttling channel composed of multiple receiving cavities 310 connected in series. Thus, while ensuring smooth forward return flow (the flow rate of forward return is small and it is not easy to form a liquid film, so the return flow is smoother), it generates multiple obstruction effects on reverse flow.

[0043] Specifically, when the liquid working fluid flows out of the storage tank 100, it must sequentially pass through the through holes 320 on the shelf 300 to enter the next stage receiving cavity 310. The fluid undergoes jet contraction as it passes through the narrow through holes 320, and then undergoes significant diffusion after entering the larger receiving cavity 310. This process repeats itself. Each diffusion generates strong vortices and turbulent kinetic energy dissipation, converting the liquid's kinetic energy into internal energy, thereby gradually weakening the impact of the liquid flow.

[0044] Furthermore, due to the presence of the containment cavity 310, the instantaneous pressure gradient caused by sudden changes in external inertial forces (such as a robot's sudden stop) cannot directly act on the liquid surface deep within the storage tank 100. The pressure wave needs to be transmitted step by step and fill each containment cavity 310, and this hysteresis effect effectively suppresses the rapid overflow of liquid.

[0045] In summary, the liquid storage structure of this application, by setting multiple staggered layers 300 and through holes 320 within the reflux hole 210, can effectively reduce the outflow velocity of the liquid working medium in the storage tank 100 when dynamic machines such as humanoid robots and low-altitude aircraft perform actions such as acceleration, deceleration, tilting, or flipping. Therefore, even under severe motion conditions, the power element 1000 can continuously receive cooling from the liquid working medium, avoiding dry burning caused by the rapid departure of the liquid working medium from the evaporation section 700, thus ensuring the stable operation and reliability of the three-electric system.

[0046] In one embodiment, this application further proposes that the inner diameter A of the reflux hole 210 and the inner diameter B of the through hole 320 satisfy that A≥3B, and 2mm≤B≤5mm, preferably A≥5B.

[0047] Specifically, the inner diameter A of the reflux hole 210 refers to the internal dimension of the reflux hole 210 on the liquid baffle 200, which connects the liquid storage tank 100 and the external space. It determines the overall diameter of the liquid working medium passing through the reflux hole 210. The inner diameter B of the through hole 320 refers to the internal dimension of the through holes 320 provided on the shelf 300. These through holes 320 are channels for the liquid working medium to flow downwards layer by layer within the reflux hole 210. Their diameter B directly affects the flow resistance of the liquid between the shelves 300 and the ability to suppress liquid outflow under tilting or overturning conditions. This application sets the inner diameter A of the reflux hole 210 and the inner diameter B of the through hole 320 to a relationship of A≥3B, ensuring that the overall diameter of the reflux hole 210 is significantly larger than the diameter of the through hole 320. This provides sufficient flow space for the liquid working medium inside the reflux hole 210, allowing the liquid to pass smoothly through the through hole 320. Meanwhile, the inner diameter B of the through hole 320 is limited to the range of 2mm to 5mm to balance the liquid backflow velocity and the outflow suppression effect. If B is too small, the liquid flow may be hindered due to excessive surface tension; if B is too large, the liquid may easily overflow in large quantities when the storage tank 100 is tilted or overturned. Preferably, when A≥5B, the free space inside the backflow hole 210 is further increased. This not only optimizes the backflow path of the liquid working medium and reduces flow resistance, but also provides a larger buffer area for the liquid working medium when the storage tank 100 is in an abnormal position, thereby more effectively utilizing the structure of the plate 300 and the through hole 320 to reduce the liquid outflow velocity.

[0048] In one embodiment, this application further proposes that the flow area of ​​each through hole 320 tends to remain constant along the path from one end communicating with the external space to one end communicating with the liquid storage tank 100. Specifically, this means that the effective flow cross-sectional area provided by the through holes 320 on each shelf 300 remains substantially constant throughout the entire return path of the liquid working medium from the external space to the liquid storage tank 100. For example, all through holes 320 can be designed to have the same inner diameter (if circular) or the same cross-sectional dimensions (if other shapes) to ensure consistency of flow area. This design can be applied to cylindrical holes, prismatic holes, or other shaped through holes, whether straight or curved, the key being that the flow area remains constant in the axial direction. By precisely controlling the size and shape of the through holes 320, it can be ensured that the liquid working medium does not encounter sudden cross-sectional contraction or expansion when passing through a series of staggered through holes 320, thereby maintaining a stable flow rate and pressure.

[0049] In another embodiment, this application further proposes that the flow area of ​​each through hole 320 decreases along the path from one end communicating with the external space to one end communicating with the liquid storage tank 100. Specifically, "the flow area of ​​the through holes 320 decreases" means that as the liquid working medium flows from the external space to the liquid storage tank 100, the cross-sectional area of ​​each through hole 320 it passes through gradually decreases. This decreasing trend can be achieved by, but is not limited to: designing the through holes 320 closer to the external space to be larger, and the through holes 320 closer to the liquid storage tank 100 to be smaller, forming a stepped decrease in flow area; or, by providing through holes 320 of different sizes on each shelf 300, for example, the through holes 320 on the uppermost shelf 300 have the largest flow area, while the through holes 320 on the lowermost shelf 300 have the smallest flow area.

[0050] In conjunction with the overall structure of the liquid storage tank 100, the liquid baffle 200, and the shelf 300, when the opening of the liquid storage tank 100 faces upwards and the tilt angle is less than or equal to a preset angle, this design of reduced flow area can further optimize the return path of the liquid working medium. This ensures that the liquid working medium can efficiently and stably return from the external space to the liquid storage tank 100, avoiding the accumulation of working medium or poor return flow caused by improper flow channel design, thereby improving the adaptability and reliability of the entire liquid storage structure under different operating conditions. Conversely, when the opening of the liquid storage tank 100 faces downwards or the tilt angle is greater than the preset angle, this design of increased flow area can significantly reduce the flow rate of the liquid working medium, thereby reducing the outflow rate of the liquid working medium.

[0051] In one embodiment, this application further proposes, as follows: Figure 6 and Figure 7 As shown, the shelf 300 is a tapered tube and forms a tapered tube portion 330 around the through hole 320. The tapered tube portion 330 has a tapered tube cavity 331 and a first opening 332 and a second opening 333 located at both ends of the tapered tube cavity 331 along its axial direction. The through hole 320 is located at one end of the tapered tube portion 330 near the liquid storage tank 100 and forms the first opening 332. The flow area of ​​the first opening 332 is smaller than the flow area of ​​the second opening 333. Furthermore, along the path from one end communicating with the external space to one end communicating with the liquid storage tank 100... The flow area of ​​the conical cavity 331 tends to decrease; when the opening of the liquid storage tank 100 faces upward and the tilt angle of the liquid storage tank 100 is less than or equal to the preset angle, the liquid working medium passes through the second opening 333, the conical cavity 331 and the first opening 332 in sequence; when the opening of the liquid storage tank 100 faces upward and the tilt angle of the liquid storage tank 100 is greater than the preset angle, or when the liquid storage tank 100 is flipped to face downward, the liquid working medium passes through the first opening 332, the conical cavity 331 and the second opening 333 in sequence.

[0052] Specifically, the shelf 300 is designed as a tapered tube, with the core being the formation of a tapered tube section 330. The tapered tube section 330 is not a simple flat plate structure, but a tubular body with a certain thickness and shape, forming a tapered cavity 331 inside. The tapered cavity 331 has openings at both axial ends, namely a first opening 332 and a second opening 333. This tapered tube structure of the shelf 300 ensures that the through hole 320 is not a simple straight hole, but is tightly integrated with the shape of the tapered tube section 330. The through hole 320 is located at the end of the tapered tube section 330 closest to the liquid storage tank 100, directly forming the first opening 332. This means that the first opening 332 is the end of the tapered tube section 330 with the smaller diameter or flow area. Correspondingly, the second opening 333 is located at the end of the tapered tube section 330 furthest from the liquid storage tank 100, and its flow area is larger than that of the first opening 332, thus forming a tapered channel that gradually narrows from the second opening 333 to the first opening 332. This design causes the flow area of ​​the tapered cavity 331 to decrease from one end connected to the external space to the other end connected to the liquid storage tank 100, which coincides with the decreasing flow area of ​​the through hole 320.

[0053] Under normal operating conditions, when the opening of the storage tank 100 faces upwards and the inclination angle of the storage tank 100 is less than or equal to a preset angle, the liquid working medium flows back from the external space to the storage tank 100. At this time, the liquid working medium first enters the second opening 333 of the conical tube section 330. The second opening 333 has a large flow area, which facilitates the smooth entry of the liquid working medium. Subsequently, the liquid working medium flows through the gradually narrowing conical tube cavity 331, and gradually accelerates as it flows towards the first opening 332, finally entering the storage tank 100 through the smaller first opening 332. This smooth narrowing channel design helps improve the reflux efficiency of the liquid working medium.

[0054] In abnormal operating conditions, such as when the opening of the storage tank 100 is facing upwards but the tilt angle is greater than a preset angle, or when the storage tank 100 is flipped so that the opening faces downwards, the liquid working medium inside the storage tank 100 may attempt to flow out. In this case, the liquid working medium will enter the conical cavity 331 from the smaller first opening 332 on one side of the storage tank 100 and attempt to flow towards the larger second opening 333 on the external space side. This flow path from narrow to wide generates significant flow resistance, effectively suppressing the outflow velocity of the liquid working medium.

[0055] By employing the aforementioned technical solution, the shelf 300 is designed as a conical tube, and the through hole 320 forms a smaller opening in the conical tube section 330 near the liquid storage tank 100. This application effectively utilizes the unidirectional flow guidance and obstruction characteristics of the conical structure for fluid flow. When the opening of the liquid storage tank 100 faces upward and the inclination angle is small, the liquid working medium enters from the second opening 333 (wider end) of the conical tube section 330, flows smoothly through the conical tube cavity 331, and enters the liquid storage tank 100 from the first opening 332 (narrower end), achieving efficient liquid working medium recirculation. This design utilizes the principle of fluid acceleration in a constricted channel, which helps the liquid working medium to quickly enter the liquid storage tank 100. Conversely, when the liquid storage tank 100 is tilted at a large angle or flipped, the liquid working medium attempts to flow out of the liquid storage tank 100. In this case, the liquid working medium needs to enter the conical tube cavity 331 from the narrower first opening 332 and then flow to the wider second opening 333. This narrow-to-wide flow path generates greater flow resistance, effectively reducing the outflow velocity of the liquid working fluid and thus significantly enhancing the anti-outflow capability of the storage structure under abnormal operating conditions. The design of the conical tubular plate 300, while maintaining reflux efficiency, greatly improves the working fluid retention capability of the storage structure under various orientations, optimizing the overall fluid management performance.

[0056] In one embodiment, this application further proposes that the inner diameter C of the second opening 333 and the inner diameter B of the through hole 320 satisfy 2B≤C≤4B, and 2mm≤B≤5mm.

[0057] Specifically, the inner diameter C of the second opening 333 and the inner diameter B of the through hole 320 are set to 2B≤C≤4B. This ensures that the size of the second opening 333 provides sufficient inlet area to reduce resistance when the liquid working medium enters the tapered tube cavity 331, while also forming a reasonable size gradient with the through hole 320 to effectively guide and control the flow of the liquid working medium. If the second opening 333 is too small, it may limit the inflow velocity of the liquid working medium; if the second opening 333 is too large, it may weaken the guiding and restricting effect of the tapered tube 330 on the flow of the liquid working medium. Meanwhile, limiting the inner diameter B of the through hole 320 to the range of 2mm≤B≤5mm is based on considerations of the flow characteristics of the liquid working medium. When the inner diameter B of the through hole 320 is less than 2 mm, capillary action may hinder the smooth flow of the liquid working medium, or it may be easily blocked by tiny impurities. When the inner diameter B of the through hole 320 is greater than 5 mm, the liquid working medium may flow out too quickly when the storage tank 100 is at a large angle or in a tumbling state, making it difficult to effectively limit the outflow. Therefore, the size range ensures that the liquid working medium has a suitable flow rate during the reflux process and effectively avoids capillary resistance or excessive outflow.

[0058] In one embodiment, such as Figure 7As shown, this application further proposes that one end of the tapered tube portion 330 with a through hole 320 passes through the second opening 333 of the adjacent tapered tube portion 330 and partially extends into the tapered tube cavity 331 of the adjacent tapered tube portion 330.

[0059] Specifically, the end of the tapered tube section 330 with the through hole 320 passes through the second opening 333 of the adjacent tapered tube section 330. This means that the end of a tapered tube section 330 containing the through hole 320 (i.e., the first opening 332) can extend and pass through the second opening 333 of another tapered tube section 330 below or adjacent to it. This design allows adjacent tapered tube sections 330 to form a nested or interlocking structure, rather than a simple spacing separation. For example, it can be designed such that the outer diameter of the first opening 332 of the previous tapered tube section 330 is slightly smaller than the inner diameter of the second opening 333 of the next tapered tube section 330, thereby achieving smooth passage. This passage method ensures that the liquid working medium can be effectively guided to flow from one tapered tube section 330 to the next, avoiding the formation of open gaps between adjacent components.

[0060] Simultaneously, one end of the through hole 320 extends into the conical cavity 331 of the adjacent conical section 330. This means it passes through the end of the conical section 330 of the second opening 333 and extends further into the internal space of the adjacent conical section 330, i.e., into the conical cavity 331. The depth of this partial extension can be adjusted according to actual needs to optimize the fluid guiding effect. For example, the extension depth can be designed to be 10% to 50% of the axial length of the conical cavity 331 to ensure sufficient flow guidance without excessively hindering fluid flow. Through this extension design, the liquid working fluid, after leaving the previous conical section 330, can directly enter the conical cavity 331 of the next conical section 330, forming a more continuous and closed fluid channel.

[0061] Through the above technical solution, a tight sleeve structure is formed between adjacent conical tube sections 330, which allows the liquid working medium to be effectively guided when flowing along the through direction of the return hole 210, significantly reducing turbulence and splashing that may occur between adjacent plates 300. When the opening of the liquid storage tank 100 faces upward and the tilt angle is less than or equal to the preset angle, the liquid working medium in the external space can pass through the second opening 333, the conical tube cavity 331 and the first opening 332 more smoothly and efficiently, and be smoothly introduced from one conical tube section 330 into the next conical tube section 330, and finally flow back into the liquid storage tank 100, thereby improving the return efficiency of the liquid working medium.

[0062] When the opening of the storage tank 100 faces upward and the tilt angle is greater than a preset angle, or when the storage tank 100 is flipped so that the opening faces downward, this socket structure can more effectively restrict the outflow of liquid working medium in the storage tank 100. Specifically, for the liquid working medium to enter the next through hole 320, the gap between adjacent conical tube sections 330 must be filled until the liquid level exceeds the lower through hole 320. During this process, the liquid level of the liquid working medium rises, and the liquid working medium enters the gap between adjacent conical tube sections 330. When the liquid working fluid flows downwards along the side wall of the upper conical cavity 331, the gap between adjacent conical cavities 330 is relatively small when the lower conical section 330 is inserted into the upper conical cavity 331. At this time, the liquid flow entering the gap and the rising liquid flow within the gap will impact each other, greatly increasing the flow resistance of the liquid working fluid within the gap. This, in turn, reduces the velocity of the liquid working fluid flowing from the storage tank 100 to the external space, enhancing the liquid working fluid retention capacity of the storage structure. This design not only optimizes the flow path of the liquid working fluid but also improves the working fluid management performance and stability of the storage structure under different operating conditions.

[0063] In another embodiment, such as Figure 6 As shown, this application further proposes that the end of the tapered tube 330 with the through hole 320 and the second opening 333 of the adjacent tapered tube 330 are spaced apart. In this embodiment, there is a certain spatial distance between these two adjacent openings, that is, they do not directly contact, nest, or overlap, but maintain a certain gap. This spacing can ensure that the liquid working fluid has sufficient flow space when passing through the adjacent plates 300, avoiding local flow resistance or stagnation due to an overly compact structure. Specifically, the gap can be a preset fixed distance, or it can be a gap optimized according to fluid dynamics to balance the reflux efficiency and the effect of blocking outflow.

[0064] In another embodiment, this application further proposes that the shelf 300 be flat. Specifically, each shelf 300 constituting the receiving cavity 310 has a flat geometry, with its thickness direction being much smaller than its planar dimension. The flat shelf 300 can be a circular, square, or other polygonal sheet with uniform thickness, its surface being flat and not containing significant curved or conical structures. Such a flat shelf 300 is easy to mass-produce using conventional manufacturing processes such as stamping, laser cutting, or CNC machining, thereby simplifying the manufacturing process.

[0065] In one embodiment, such as Figure 5 As shown, this application further proposes to define a plane perpendicular to the center line of the return hole 210 as a reference plane, and the orthographic projections of each through hole 320 on the reference plane do not coincide; and / or, the center line of the through hole 320 and the center line of the return hole 210 do not coincide.

[0066] Here, the plane perpendicular to the centerline of the return hole 210 is defined as the reference plane, and the orthographic projections of each through hole 320 on the reference plane do not coincide. This means that during the design and manufacturing process, the centerline of the return hole 210 is used as a reference axis, and an imaginary plane perpendicular to the axis is used as the reference plane. On this reference plane, the projection areas of the through holes 320 on each shelf 300 do not overlap. For example, if the return hole 210 is a straight hole with its centerline as the axis, then the orthographic projection is the projection along the axial direction of the return hole 210. This arrangement aims to ensure that the flow path of the liquid working fluid must change in the radial direction when passing through the through holes 320 on different shelves 300, thus forming a more tortuous and complex flow channel. This can be achieved by offsetting the projections of the center points of the through holes 320 on adjacent shelves 300 on the reference plane, for example, by using a spiral, staggered, or randomly offset arrangement, as long as the projections do not coincide. This meticulous staggered arrangement helps increase the flow resistance of the liquid working medium during the reflux process, thereby effectively reducing the outflow velocity of the liquid working medium when the storage tank 100 is tilted at a large angle or overturned.

[0067] However, this is not the only possibility. In other embodiments, the orthographic projections of each through hole 320 onto the reference plane may be partially overlapping, or of course, completely overlapping.

[0068] Meanwhile, the centerline of the through hole 320 and the centerline of the return hole 210 do not coincide. This means that the geometric center axis of all through holes 320 set in the return hole 210 does not coincide with the geometric center axis of the return hole 210. This implies that the through holes 320 are arranged off-center from the center axis of the return hole 210. For example, all through holes 320 on the shelf 300 can be eccentrically arranged on one side of the return hole 210, or the through holes 320 can be evenly or unevenly distributed away from the center line using the center line of the return hole 210 as the axis. This arrangement can effectively extend the return path of the liquid working medium and increase its energy dissipation during the return process, thereby better suppressing the outflow of the liquid working medium when the storage tank 100 tilts or flips.

[0069] In one embodiment, the present application further proposes that each layer 300 has one or more through holes 320, and the through holes 320 are densely distributed in an array.

[0070] The through-holes 320 on each shelf 300 are the key to enabling the return of liquid working fluid from the external space to the storage tank 100. When each shelf 300 has only one through-hole 320, its main function is to provide a single liquid working fluid channel. However, when each shelf 300 has multiple through-holes 320, it means that there are multiple independent or interconnected liquid working fluid channels on the same shelf 300, which significantly increases the flow area and number of channels for the liquid working fluid through the shelf 300. This design can effectively improve the overall return capacity of the liquid working fluid to adapt to different working fluid flow requirements. When multiple through-holes 320 are provided on the shelf 300, the arrangement of these through-holes 320 is crucial to the flow characteristics of the liquid working fluid. "Array-like dense distribution" means that these through-holes 320 are arranged in a regular, repeating pattern, and the spacing between the holes is relatively small, so that as many through-holes 320 as possible can be accommodated within the limited area of ​​the shelf 300. For example, these through holes 320 can be arranged in rectangular, circular, or honeycomb arrays. This dense distribution not only further increases the effective flow area of ​​the liquid working fluid, but also helps to achieve uniform distribution of the liquid working fluid across the entire cross-section of the shelf 300, avoiding excessively high or low local flow velocities, thereby optimizing the flow path and reflux efficiency of the liquid working fluid. At the same time, this distribution also provides greater design flexibility for the staggered arrangement of the through holes 320 in adjacent shelves 300.

[0071] In one embodiment, such as Figure 3 As shown, this application further proposes that there be multiple reflux holes 210, which are distributed at intervals along the circumference of the liquid baffle 200, and each reflux hole 210 is provided with multiple shelves 300. For example, when the liquid baffle 200 is rectangular, a reflux hole 210 is provided on each of the four sides of the liquid baffle 200; when the liquid baffle 200 is circular, the four reflux holes 210 can be evenly spaced along the circumference of the liquid baffle 200.

[0072] By employing the aforementioned technical solution, multiple reflux holes 210 are arranged at intervals along the circumference of the liquid baffle 200, significantly increasing the total area of ​​the reflux channel for the liquid working medium. This enhances the reflux efficiency and processing capacity of the liquid working medium. This porous, circumferentially distributed design allows the liquid working medium to flow uniformly from different areas of the liquid baffle 200 back to the storage tank 100, effectively preventing localized accumulation of the liquid working medium on the surface of the liquid baffle 200. This is particularly beneficial when the storage structure is at different tilt angles or when processing large quantities of liquid working medium, ensuring rapid and stable reflux. Furthermore, since each reflux hole 210 retains the layered plate 300 structure, it effectively suppresses the outflow of liquid working medium from the storage tank 100 even when the storage tank 100 is tilted or at a large angle. This improves reflux efficiency while maintaining good control over the flow of the liquid working medium, enhancing the adaptability and reliability of the storage structure under various operating conditions.

[0073] In one embodiment, such as Figure 4 As shown, this application further proposes that a reflux protrusion 220 is fixedly provided on the surface of the liquid-retaining cover 200 facing the liquid storage tank 100. The reflux protrusion 220 is conical, and its cross-sectional area decreases from the end near the external space to the end near the liquid storage tank 100. Specifically, the reflux protrusion 220 is provided on the surface of the liquid-retaining cover 200 facing the liquid storage tank 100. Its main function is to guide and concentrate the liquid working medium when it enters the liquid storage tank 100 from the reflux hole 210. The reflux protrusion 220 is conical, and its cross-sectional area decreases from the end near the external space to the end near the liquid storage tank 100. This conical structure can effectively gather the liquid working medium flowing out of the reflux hole 210 and guide it smoothly into the liquid storage tank 100, reducing the diffusion or retention of the liquid working medium on the surface of the liquid-retaining cover 200, thereby improving the reflux efficiency. For example, the reflux protrusion 220 can be a solid or hollow cone with its bottom connected to the surface of the liquid baffle 200 and its top pointing into the liquid storage tank 100.

[0074] A diversion protrusion 230 is fixedly provided on the surface of the liquid-retaining cover 200 opposite to the liquid storage tank 100. The diversion protrusion 230 is conical, and its cross-sectional area increases from the end near the external space to the end near the liquid storage tank 100. The return hole 210 is located in the peripheral area of ​​the diversion protrusion 230. The diversion protrusion 230 is located on the surface of the liquid-retaining cover 200 opposite to the liquid storage tank 100, that is, on the side facing the external space. Its main function is to guide and divert the liquid working medium when it enters the return hole 210 from the external space. The diversion protrusion 230 is also conical, but its geometric characteristics are opposite to those of the return protrusion 220, that is, its cross-sectional area increases from the end near the external space to the end near the liquid storage tank 100. The return hole 210 is located in the peripheral area of ​​the diversion protrusion 230. This structure allows the liquid working fluid to be guided by the diversion protrusion 230 before entering the return orifice 210, and evenly distributed to the inlet area of ​​the return orifice 210. This avoids excessive concentration of the liquid working fluid in a certain area or the formation of eddies, thereby optimizing the path of the liquid working fluid into the return orifice 210 and improving the return efficiency. For example, the diversion protrusion 230 can be an inverted cone, with its top connected to the surface of the liquid baffle 200 and its bottom opening outwards. The return orifice 210 surrounds the sidewall of the cone.

[0075] It should be noted that the reflux protrusion 220, the diversion protrusion 230, and the liquid baffle 200 can be integrally molded, or they can be welded, snap-fitted, or bonded.

[0076] In one embodiment, such as Figure 5 As shown, this application further proposes that the liquid storage structure also includes an installation tube 400, which is provided in a one-to-one correspondence with the shelf 300. The installation tube 400 is provided on one side of the shelf 300 and is fixedly connected to the shelf 300 to form a sleeve 500. The outer diameter of the inner sleeve 500 is smaller than the inner diameter of the outer sleeve 500, and adjacent sleeves 500 are sleeved together. The inner sleeve 500 and the outer sleeve 500 are fitted together and fixedly connected, or each sleeve 500 is fixedly connected to the liquid baffle 200.

[0077] Specifically, the mounting tube 400 is a tubular component whose main function is to provide structural support and connection for the shelf 300, enabling precise installation and fixation of the shelf 300 within the return hole 210. The one-to-one correspondence between the mounting tube 400 and the shelf 300 means that each shelf 300 is equipped with an independent mounting tube 400, thus giving each shelf 300 unit independent installation and positioning capabilities. The mounting tube 400 is located on one side of the shelf 300 and is firmly connected to the shelf 300 by welding, bonding, riveting, or threaded connections, forming a sleeve 500 unit. This sleeve 500 unit design makes the shelf 300 and the mounting tube 400 a single unit, facilitating subsequent assembly.

[0078] To achieve the orderly arrangement and fixation of multiple shelves 300, this application designs a sleeve connection structure between sleeves 500. Specifically, the outer diameter of the inner sleeve 500 is designed to be smaller than the inner diameter of the outer sleeve 500. This dimensional fit allows one sleeve 500 to be smoothly inserted into the interior of an adjacent sleeve 500. Through this sleeve connection method, multiple sleeves 500 can be connected sequentially along the through direction of the return hole 210 to form a continuous and stable structural chain. After the adjacent sleeves 500 are sleeved, they can be further connected and fixed by fitting, such as spot welding, gluing, snap-fitting, or press-fitting, to ensure the structural rigidity and stability of the entire sleeve 500 assembly and prevent the shelves 300 from shifting or loosening during operation. As another implementation method, or as a supplementary fixing method, each sleeve 500 can also be directly fixed to the liquid baffle 200. This means that each sleeve 500 unit consisting of each shelf 300 and mounting tube 400 can be independently installed and fixed to the liquid baffle 200. This method can provide greater assembly flexibility and may simplify the replacement or maintenance of individual shelves 300.

[0079] Through the above technical solution, the layer plate 300 and the mounting pipe 400 are integrated to form a sleeve 500 unit. The sleeves 500 are connected and fixedly joined, providing a stable and reliable mechanical structure for the precise spacing of multiple layers 300 within the return hole 210. This design effectively solves the problems of inaccurate positioning and structural instability of the layer plate 300, ensuring the long-term maintenance of the formation of the receiving cavity 310 and the staggered arrangement of adjacent through holes 320. When the liquid storage structure operates at different tilt angles or under flipping conditions, the overall rigidity of the sleeve 500 assembly effectively resists the impact and vibration of the liquid working medium, thereby ensuring efficient return of the liquid working medium along a preset path and effectively suppressing the outflow velocity of the liquid working medium, improving the reliability and performance stability of the liquid storage structure under complex operating conditions.

[0080] In one embodiment, such as Figure 8As shown, this application further proposes that the liquid storage structure also includes a connecting pipe 600, which is a pipe used to connect two or more spaces to allow fluid (gas or liquid) to pass through. Its structure can be a straight pipe, a bend, or a pipe fitting with a specific shape. The material is usually selected to be compatible with the working fluid and corrosion-resistant, such as metals (e.g., copper, stainless steel) or certain plastics. The inner diameter and length of the connecting pipe 600 can be designed according to the required flow rate and pressure drop in the actual application. The connection between the liquid baffle 200 and the connecting pipe 600 is usually sealed to prevent working fluid leakage. This configuration allows the interior of the liquid storage tank 100 to directly exchange gases with the external space, thereby balancing the internal and external pressures. When the opening of the liquid storage tank 100 is set downwards and the liquid working fluid in the liquid storage tank 100 submerges the return hole 210, the liquid storage tank 100 can be connected to the external space through the connecting pipe 600 to achieve pressure balance between the liquid storage tank 100 and the external space. When the liquid storage tank 100 is inverted and the return port 210 is completely submerged by the liquid working medium, gas exchange is impossible through the return port 210. In this case, the connecting pipe 600 acts as an independent channel, ensuring that the gas inside the liquid storage tank 100 can circulate with the external space, thereby eliminating the pressure difference between the inside and outside. It should be noted that the connecting pipe 600 can be inserted into the liquid-blocking cover 200, or it can pass through the liquid-blocking cover 200 and extend into the external space.

[0081] In one embodiment, such as Figure 8 As shown, this application further proposes that the liquid storage structure also includes an extension tube 2000, which is a tubular structure whose function is to further guide the liquid working medium in the return hole 210 into the interior of the liquid storage tank 100. Specifically, one end of the extension tube 2000 is connected to the liquid baffle 200 and communicates with the corresponding return hole 210, ensuring that the liquid working medium can smoothly enter the extension tube 2000 from the return hole 210. The other end of the extension tube 2000 extends towards the bottom of the liquid storage tank 100, which means that the extension tube 2000 can penetrate deep into the interior of the liquid storage tank 100, transporting the returned liquid working medium to a deeper location, rather than simply remaining in the top area of ​​the liquid storage tank 100. The shape of the extension tube 2000 can be circular, square, or other cross-sectional shapes suitable for fluid transport.

[0082] In addition, another set of shelves 300 is disposed within the extension tube 2000. These shelves 300 have a similar function to the shelves 300 within the reflux orifice 210, namely, controlling the flow behavior of the liquid working fluid through their structural design. These shelves 300 can use the same material and basic structure as the shelves 300 within the reflux orifice 210, such as flat plates or tapered tubes. Their placement within the extension tube 2000 allows the liquid working fluid to be subjected to similar flow control as it flows downward through the extension tube 2000, for example, by slowing the flow rate, preventing liquid sloshing, or achieving gas-liquid separation through the staggered arrangement of the through holes 320.

[0083] Meanwhile, adjacent shelves 300 within the extension tube 2000 are spaced apart. This spacing creates multiple receiving cavities 310, similar to the shelf 300 structure within the reflux orifice 210. This spacing facilitates the formation of a liquid film or droplets as the liquid working fluid passes through the shelves 300 and allows gas to escape upwards during the reflux of the liquid working fluid, thus avoiding gas resistance. Simultaneously, the spacing also provides a buffer space for the liquid working fluid, further reducing the impact force and stabilizing the reflux process.

[0084] Through the above technical solution, when the liquid storage tank 100 is tilted at a large angle or flipped to face downwards, the extension pipe 2000 and the internal plate 300 can also work together to reduce the outflow velocity of the liquid working medium and ensure that the returned liquid working medium can be effectively collected and stored. This improves the utilization efficiency and management capability of the liquid storage tank 100 for the liquid working medium, thereby optimizing the working medium circulation and heat exchange performance of the entire heat pipe heat exchange device.

[0085] In one embodiment, such as Figure 8 As shown, this application further proposes that the above-mentioned liquid storage structure also includes branch pipes 3000. Specifically, each extension pipe 2000 is connected to a plurality of branch pipes 3000, and each branch pipe 3000 extends toward different peripheral areas of the bottom of the liquid storage tank 100.

[0086] The branch pipe 3000 is a piping structure used to split a single flow path of a liquid working medium into multiple flow paths. These branch pipes 3000 typically consist of a main inlet and multiple outlets, designed to effectively distribute the liquid working medium to different directions or areas. The geometry and dimensions of the branch pipe 3000 can be designed according to actual application requirements and the internal structure of the liquid storage tank 100, for example, using Y-shaped, T-shaped, or manifold structures to achieve optimal fluid distribution. The connection between the extension pipe 2000 and the branch pipe 3000 can be achieved through welding, brazing, or mechanical fastening to ensure a tight connection and leak-free fluid transmission.

[0087] Each extension pipe 2000 is connected to multiple branch pipes 3000. This means that the liquid working fluid flowing out of the extension pipe 2000 will not be discharged from a single point, but will be guided into multiple branch pipes 3000, thereby achieving initial dispersion of the liquid working fluid. This design ensures that the liquid working fluid begins to divert before entering the bottom of the storage tank 100, laying the foundation for subsequent uniform distribution.

[0088] Each branch pipe 3000 is designed to point to different peripheral areas at the bottom of the storage tank 100, so that the liquid working medium can evenly cover a wider area at the bottom of the storage tank 100 after being diverted. This extension of "different peripheral areas" usually means that the branch pipes 3000 are distributed radially or circumferentially to maximize the coverage area of ​​the liquid working medium at the bottom of the storage tank 100.

[0089] Please see Figure 1 and Figure 2 This application also proposes a heat pipe heat exchange device, which includes an evaporation section 700, a condensation section 800, a liquid absorption spray assembly 900, and a liquid storage structure as described in any of the above embodiments. A power element 1000 is disposed in the evaporation section 700. The liquid storage structure is connected to the condensation section 800 through the evaporation section 700. The condensation section 800 includes a plurality of parallel condensation channels 810. Each condensation channel 810 is connected to the evaporation section 700. An outer fin 820 is provided between adjacent condensation channels 810. An inner fin (not shown) is provided inside the condensation channel 810. The liquid suction spray assembly 900 is sealed through the sealing hole 240 on the liquid baffle cover 200. The liquid suction end 910 of the liquid suction spray assembly 900 is located in the liquid storage tank 100, and the spray end 920 of the liquid suction spray assembly 900 is located in the evaporation section 700. The liquid suction spray assembly 900 can absorb liquid working fluid through its liquid suction end 910 and spray it onto the heating surface of the power element 1000 through its spray end 920. The liquid working fluid sprayed onto the heating surface of the power element 1000 can absorb heat and vaporize into the condensation section 800. After releasing heat and liquefying in the condensation section 800, it flows back to the evaporation section 700 and flows back to the liquid storage tank 100 again through the return hole 210.

[0090] It should be noted that the liquid pump of the liquid suction spray assembly 900 is located inside the liquid storage tank 100, and the power supply of the liquid suction spray assembly 900 is located outside the heat pipe heat exchange device. The power cord passes through the inner wall of the liquid storage tank 100 in a sealed manner. Alternatively, the liquid pump and the power supply can be electrically connected by setting a connector on the side wall of the liquid storage tank 100.

[0091] The core innovation of this embodiment lies in the integration of the above-mentioned liquid storage structure with the liquid suction spray assembly 900. When the liquid storage tank 100 is tilted or flipped, the through hole 320 of the shelf plate 300 is designed to slow down the outflow speed of the liquid working fluid. The liquid suction spray assembly 900 actively draws out the liquid working fluid and sprays it onto the power element 1000, thus solving the problem of dry burning of the power element 1000 under dynamic operating conditions and achieving a continuous and reliable cooling effect during violent movement.

[0092] Specifically, during operation, the heat generated by the power element 1000 causes the liquid working fluid sprayed onto its heating surface to absorb heat and vaporize. The gaseous working fluid then enters the condensation section 800, releases heat, liquefies, and flows back to the evaporation section 700. Under normal operating conditions, the liquefied liquid working fluid flows back to the storage tank 100 through the through holes 320 in the return hole 210. However, when the dynamic machinery tilts or flips, the plates 300 in the storage structure form tortuous channels, significantly increasing the resistance to the outflow of the liquid working fluid, thereby slowing down the rate of liquid fluid loss from the storage tank 100. Simultaneously, the liquid suction spray assembly 900 continuously draws liquid working fluid from the storage tank 100 and sprays it onto the power element 1000, ensuring that the power element 1000 receives a stable cooling supply even under severe motion conditions.

[0093] Through the above technical solutions, the heat pipe heat exchange device effectively overcomes the risk of dry burning caused by the rapid loss of liquid working fluid in dynamic machinery, realizes efficient thermal management of the three-electric system in complex motion scenarios, and significantly improves the reliability and adaptability of the system.

[0094] In one embodiment, such as Figure 1 As shown, this application further proposes that when the opening of the liquid storage tank 100 faces upward and the tilt angle of the liquid storage tank 100 is less than or equal to a preset angle, the height of the condensation section 800, the evaporation section 700 and the liquid storage tank 100 decreases in the vertical direction.

[0095] Specifically, "when the opening of the liquid storage tank 100 faces upward and the tilt angle of the liquid storage tank 100 is less than or equal to a preset angle" refers to the heat pipe heat exchange device being in a specific working posture. "The opening of the liquid storage tank 100 faces upward" means that the opening of the liquid storage tank 100 is generally upward, not downward or completely horizontal. "The tilt angle is less than or equal to a preset angle" limits the degree of tilt of the device, indicating that the device is tilted within a certain range, but still maintains a relatively upright or near-upright state. For example, the preset angle can be set to a value between 0 and 90°, preferably within the range of 10° to 30°. Under this working posture, the gravity return mechanism of the device can function effectively.

[0096] Specifically, the condensing section 800 is located at the highest vertical position, the evaporating section 700 is located in the middle vertical position, and the storage tank 100 is located at the lowest vertical position. This decreasing height trend can be achieved through structural design and installation methods. For example, the condensing section 800 can be installed above the evaporating section 700, and the evaporating section 700 can be installed above the storage tank 100, thus forming a stepped vertical layout. This layout ensures that the liquid working fluid can flow smoothly from high to low under the influence of gravity.

[0097] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

[0099] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0100] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0101] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0102] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0103] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0104] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

Claims

1. A liquid storage structure, characterized in that, The device includes a liquid storage tank (100), a liquid baffle (200), and multiple shelves (300). The liquid baffle (200) is disposed at the opening of the liquid storage tank (100) and has a reflux hole (210) for connecting the liquid storage tank (100) and the external space. At least a portion of the shelves (300) are disposed within the reflux hole (210). Multiple shelves (300) are spaced apart along the through direction of the reflux hole (210) to form a receiving cavity (310). Each shelf (300) is provided with a through hole (320) that can connect to an adjacent receiving cavity (310). The layer plate (300) is in the shape of a tapered tube and forms a tapered tube section (330) around the through hole (320). The tapered tube section (330) is provided with a tapered tube cavity (331) and a first opening (332) and a second opening (333) located at both ends of the tapered tube cavity (331) along the axial direction. The through hole (320) is located at one end of the tapered tube section (330) near the liquid storage tank (100) and forms the first opening (332). The flow area of ​​the first opening (332) is smaller than the flow area of ​​the second opening (333). Along the line from one end connected to the external space to one end connected to the liquid storage tank (100), the flow area of ​​the tapered tube cavity (331) tends to decrease.

2. The liquid storage structure according to claim 1, characterized in that, The center lines of the through holes (320) of adjacent layers (300) do not coincide.

3. The liquid storage structure according to claim 1, characterized in that, The inner diameter A of the reflux hole (210) and the inner diameter B of the through hole (320) satisfy that A≥3B and 2mm≤B≤5mm.

4. The liquid storage structure according to claim 1, characterized in that, Along the path from one end connected to the external space to the other end connected to the liquid storage tank (100), the flow area of ​​each of the through holes (320) tends to decrease.

5. The liquid storage structure according to claim 1, characterized in that, One end of the tapered tube section (330) having the through hole (320) passes through the second opening (333) of the adjacent tapered tube section (330) and partially extends into the tapered tube cavity (331) of the adjacent tapered tube section (330).

6. The liquid storage structure according to claim 1, characterized in that, The tapered tube section (330) is provided with one end of the through hole (320) and a second opening (333) adjacent to the tapered tube section (330) at intervals.

7. The liquid storage structure according to claim 1, characterized in that, A plane perpendicular to the center line of the return hole (210) is defined as the reference plane, and the orthographic projections of each of the through holes (320) on the reference plane do not coincide; And / or, the center line of the through hole (320) and the center line of the return hole (210) do not coincide.

8. The liquid storage structure according to claim 1, characterized in that, The number of reflux holes (210) is multiple, and the multiple reflux holes (210) are distributed at intervals along the circumference of the liquid baffle (200). Each reflux hole (210) is provided with a plurality of the layers (300).

9. The liquid storage structure according to claim 1, characterized in that, It also includes an installation tube (400), which is provided in a one-to-one correspondence with the shelf (300). The installation tube (400) is provided on one side of the shelf (300) and is fixedly connected to the shelf (300) to form a sleeve (500). The outer diameter of the inner sleeve (500) is smaller than the inner diameter of the outer sleeve (500), and adjacent sleeves (500) are sleeved together. The inner sleeve (500) and the outer sleeve (500) are fitted together and fixedly connected, or each sleeve (500) is fixedly connected to the liquid-blocking cover (200).

10. The liquid storage structure according to claim 1, characterized in that, It also includes an extension tube (2000), one end of which is connected to the liquid baffle (200) and communicates with the corresponding return hole (210), and the other end extends toward the bottom of the liquid storage tank (100). Another part of the shelf (300) is disposed in the extension tube (2000), and adjacent shelves (300) in the extension tube (2000) are spaced apart.

11. A heat pipe heat exchange device, characterized in that, The system includes an evaporation section (700), a condensation section (800), a liquid-absorbing spray assembly (900), and a liquid storage structure as described in any one of claims 1-10. A power element (1000) is disposed in the evaporation section (700), and the liquid storage structure is connected to the condensation section (800) through the evaporation section (700). The liquid-absorbing end (910) of the liquid-absorbing spray assembly (900) is located in the liquid storage tank (100), and the spray end (920) of the liquid-absorbing spray assembly (900) is located in the evaporation section (700). In section (700), the liquid suction spray assembly (900) can absorb liquid working fluid through its own suction end (910) and spray it onto the heating surface of the power element (1000) through its own spray end (920); the liquid working fluid sprayed onto the heating surface of the power element (1000) can absorb heat and vaporize into the condensation section (800), and after releasing heat and liquefying in the condensation section (800), it flows back to the evaporation section (700) and flows back to the liquid storage tank (100) again through the return hole (210).

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