Flexible connection gravity loop heat pipe adapting to angle adjustment and radiator

Abstract

The invention discloses a flexible connection gravity loop heat pipe adaptive to angle adjustment and a radiator. The flexible connection gravity loop heat pipe adaptive to angle adjustment comprises an evaporation assembly, a condensation assembly, a connecting support, a medium injection opening, an input hose and a backflow hose. The angle adjusting assembly is used for adjusting the relative included angle between the condensation assembly and the evaporation assembly. The angle of the condensation assembly can be flexibly adjusted through the angle adjusting assembly, it is ensured that the condensation assembly is perpendicular to the ground all the time, the heat dissipation efficiency at different inclination angles is remarkably improved, and the problem that condensate backflow is not smooth is solved. The flexible connection structure enhances the adjustment flexibility of the loop heat pipe, ensures smooth flow of the working medium, and improves the reliability. The foamed aluminum block serves as a liquid absorption core, the phase change heat transfer efficiency is improved, and the working medium is prevented from drying up and losing efficacy. The heat pipe is excellent in performance in application scenes such as high-power chips, the heat dissipation requirement of complex working conditions is met, and high-performance operation of electronic equipment is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of chip heat dissipation technology, and in particular to a flexible gravity loop heat pipe and heat sink with adjustable angle. Background Technology

[0002] With the increasing integration of electronic devices, the number of electronic components integrated on a single chip per unit area has increased dramatically, and the operating power has risen significantly, leading to a sharp increase in the heat flux density per unit area. In this situation, traditional heat pipe technology is no longer sufficient to meet the heat dissipation requirements of high-power chips, and heat dissipation has become a key bottleneck restricting the high reliability and efficiency of electronic devices.

[0003] In existing technologies, traditional gravity heat pipes exhibit many significant advantages due to their unique structural design. For example, they require no external power and rely solely on the natural circulation of the working fluid under gravity to transfer heat. However, in current gravity heat pipes, both the vapor and liquid pipes are welded to the condenser and evaporator ends. This fixed connection method can only serve one operating condition, resulting in insufficient heat dissipation efficiency. Especially when the equipment is tilted or the angle changes, the condensate return flow is impeded, leading to a significant decrease in heat dissipation efficiency. Summary of the Invention

[0004] This invention provides a flexible gravity loop heat pipe and radiator that adapts to angle adjustment, in order to solve the technical problem that gravity loop heat pipes in the prior art cannot maintain high heat exchange efficiency under different tilt angles.

[0005] In view of the above technical problems, embodiments of the present invention provide a flexible gravity loop heat pipe with adjustable angle, including an evaporation assembly, a condensation assembly, a connecting bracket, a medium injection port communicating with the evaporation assembly, an inlet hose, and a return hose; the evaporation assembly is fixedly connected to the bottom end of the connecting bracket, and the condensation assembly is rotatably connected to the top end of the connecting bracket through an angle adjustment assembly; the angle adjustment assembly is used to adjust the relative angle between the condensation assembly and the evaporation assembly;

[0006] The medium is introduced into the evaporation assembly through the medium injection port. After absorbing heat, the medium forms steam, which flows into the condensation assembly through the input hose. After heat exchange is completed in the condensation assembly, the steam flows back to the evaporation assembly through the return hose.

[0007] Optionally, the connecting bracket includes a plurality of first vertical rods, a first horizontal rod connecting the first vertical rods, and a mounting plate;

[0008] The angle adjustment assembly includes a worm gear, a worm meshing with the worm gear, a drive shaft passing through the mounting plate and connected to the worm, a handwheel sleeved on the drive shaft, and a rotating shaft passing through the first crossbar and fixed to the side wall of the condenser assembly.

[0009] Optionally, the evaporation assembly includes a base plate, a support column disposed on the base plate, a foamed aluminum block sleeved on the support column, and an evaporation chamber covering the foamed aluminum block; the base plate is connected to the first vertical rod.

[0010] Optionally, the condensation assembly includes a condensation unit and a condensation shell covering the outside of the condensation unit; the condensation unit includes a first gas-liquid pipe, a second gas-liquid pipe, and a plurality of uniformly arranged return flat pipes connecting the first gas-liquid pipe and the second gas-liquid pipe; fins are provided between adjacent return flat pipes.

[0011] Optionally, it also includes a heat dissipation assembly, which includes a fan mounted on the outer wall of the condenser housing.

[0012] Optionally, one end of the input hose is connected to the first gas-liquid pipe, and the other end is connected to the evaporation assembly via a first rotary joint;

[0013] One end of the reflux hose is connected to the second gas-liquid pipe, and the other end is connected to the evaporation assembly via the second rotary joint.

[0014] Optionally, the lower end of the return hose is tangent to the lower end of the internal pipe of the second rotary joint.

[0015] The present invention also provides a heat sink, including the above-described adaptive angle-adjustable flexible gravity loop heat pipe.

[0016] In this invention, firstly, through the innovative design of the angle adjustment component, the condensing component can flexibly adjust its relative angle with the evaporating component according to the tilt angle of the equipment, ensuring that the condensing component always remains perpendicular to the ground. This significantly improves the heat dissipation efficiency of the heat pipe at different tilt angles and avoids the phenomenon of poor condensate return and reduced heat dissipation efficiency caused by equipment tilt. Secondly, flexible connection structures are used between the inlet hose and the condensing component, and between the return hose and the evaporating component. This not only enhances the flexibility and adaptability of the loop heat pipe's angle adjustment but also ensures smooth flow of the working fluid between the condensing and evaporating components, further improving the system's reliability and stability. Furthermore, the foamed aluminum block used in the evaporating component as a liquid absorber has high porosity and good thermal conductivity, enabling it to quickly absorb and disperse heat, significantly improving phase change heat transfer efficiency and preventing the evaporating component from failing due to working fluid drying. These innovations work together to make the loop heat pipe of this invention perform excellently in high-heat-flux-density applications such as high-power chips, meeting the heat dissipation requirements under various complex operating conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of a flexible gravity loop heat pipe with adjustable angle in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the installation of the angle adjustment component in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of an evaporation component in one embodiment of the present invention;

[0021] Figure 4 This is a partial structural schematic diagram of a condensation component in one embodiment of the present invention.

[0022] The reference numerals in the accompanying drawings are as follows:

[0023] 1-Evaporation assembly, 11-Base plate, 12-Support column, 13-Foamed aluminum block, 14-Evaporation chamber, 2-Condensation assembly, 21-First gas-liquid pipe, 22-Second gas-liquid pipe, 23-Return flat pipe, 24-Fins, 25-Condensation shell, 3-Connecting bracket, 31-First vertical rod, 32-First horizontal rod, 33-Mounting plate, 4-Angle adjustment assembly, 41-Worm gear, 42-Worm, 43-Drive shaft, 44-Handwheel, 45-Rotating shaft, 5-Media injection port, 6-Input hose, 7-Return hose, 8-Heat dissipation assembly, 9-First rotary joint, 10-Second rotary joint. Detailed Implementation

[0024] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0025] In the description of this invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention 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 the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] like Figures 1 to 4As shown, one embodiment of the present invention provides a flexible gravity loop heat pipe with adjustable angle, including an evaporation assembly 1, a condensation assembly 2, a connecting bracket 3, a medium inlet 5 communicating with the evaporation assembly 1, an input hose 6, and a return hose 7. The evaporation assembly 1 is fixedly connected to the bottom end of the connecting bracket 3, and the condensation assembly 2 is rotatably connected to the top end of the connecting bracket 3 via an angle adjustment component 4. The angle adjustment component 4 is used to adjust the relative angle between the condensation assembly 2 and the evaporation assembly 1. The medium is input into the evaporation assembly 1 through the medium inlet 5, absorbs heat to form vapor, flows into the condensation assembly 2 through the input hose 6, completes heat exchange in the condensation assembly 2, and then flows back to the evaporation assembly 1 through the return hose 7. The condensation assembly 2 is rotatably connected to the top end of the connecting bracket 3 via the angle adjustment component 4, allowing for flexible adjustment of the relative angle with the evaporation assembly 1 according to the device's tilt angle, ensuring that the condensation assembly 2 is always perpendicular to the ground, thereby maintaining optimal condensation performance. Furthermore, the inlet hose 6 and the return hose 7 are made of flexible materials, which have good flexibility and fatigue resistance, and can withstand repeated bending and twisting of the condenser assembly 2 during the angle adjustment process, ensuring that the condenser assembly 2 can maintain a reliable connection and stable medium flow with the evaporator assembly 1 at any angle.

[0028] In one embodiment, such as Figures 1 to 2 As shown, the connecting bracket 3 includes multiple first vertical rods 31, a first horizontal rod 32 connecting the first vertical rods 31, and a mounting plate 33; the angle adjustment assembly 4 includes a worm gear 41, a worm 42 meshing with the worm gear 41, a drive shaft 43 passing through the mounting plate 33 and connected to the worm 42, a handwheel 44 sleeved on the drive shaft 43, and a rotating shaft 45 passing through the first horizontal rod 32 and fixed to the side wall of the condenser assembly 2. Understandably, the meshing transmission structure of the worm gear 41 and the worm 42 enables precise angle adjustment. By manually rotating the handwheel 44, the worm 42 can be driven to rotate, which in turn drives the worm gear 41 to rotate. The rotation of the worm gear 41 drives the rotating shaft 45 to rotate, thereby achieving angle adjustment of the condenser assembly 2 fixedly connected to the rotating shaft 45. The component is easy to operate and can precisely control the relative angle between the condenser component 2 and the evaporator component 1, ensuring that the condenser component 2 is always perpendicular to the ground. This angle adjustment mechanism significantly improves the adaptability and flexibility of the heat pipe, enabling it to maintain efficient heat dissipation performance at different tilt angles.

[0029] In one embodiment, such as Figure 1 and Figure 3As shown, the evaporation assembly 1 includes a base plate 11, a support column 12 disposed on the base plate 11, a foamed aluminum block 13 sleeved on the support column 12, and an evaporation chamber 14 covering the foamed aluminum block 13; the base plate 11 is connected to the first vertical rod 31. Understandably,

[0030] In one embodiment, such as Figure 1 and Figure 4 As shown, the condensation assembly 2 includes a condensation unit and a condensation shell 25 covering the condensation unit; the condensation unit includes a first gas-liquid pipe 21, a second gas-liquid pipe 22, and a plurality of uniformly arranged return flat pipes 23 connecting the first gas-liquid pipe 21 and the second gas-liquid pipe 22; fins 24 are arranged between adjacent return flat pipes 23. Understandably,

[0031] In one embodiment, such as Figure 1 and Figure 4 As shown, it also includes a heat dissipation assembly 8, which includes a fan mounted on the outer wall of the condenser housing 25. Understandably,

[0032] In one embodiment, such as Figure 1 and Figure 4 As shown, one end of the input hose 6 is connected to the first gas-liquid pipe 21, and the other end is connected to the evaporation assembly 1 via the first rotary joint 9; one end of the return hose 7 is connected to the second gas-liquid pipe 22, and the other end is connected to the evaporation assembly 1 via the second rotary joint 10. Understandably, the base plate 11, as the heat conduction substrate, is in direct contact with the heat source, ensuring that heat can be quickly transferred to the entire evaporation assembly 1. The support column 12 not only provides structural support but also increases the heat conduction path, allowing for a more uniform heat distribution. The foamed aluminum block 13 has high porosity and good thermal conductivity, enabling it to quickly absorb and disperse heat, while its porous structure facilitates the vaporization process of the working fluid. The evaporation chamber 14 provides a closed space for the vaporization of the working fluid, ensuring that the working fluid can smoothly transform into steam after being heated and enter the condensation assembly 2.

[0033] In one embodiment, the lower end of the return hose 7 is tangential to the lower end of the internal pipe of the second rotary joint 10. Understandably, this structure prevents excessive accumulation of the liquid working fluid in the second gas-liquid pipe 22 when it flows into the return hose 7, thereby reducing the residence time of the liquid working fluid in the condenser assembly 2 and improving the circulation efficiency of the working fluid. It also enhances the adaptability of the system, ensuring smooth return of the liquid working fluid even when the angle of the condenser assembly 2 is adjusted, guaranteeing that the heat pipe maintains efficient heat dissipation performance at different tilt angles.

[0034] In the above embodiments of the present invention, when the adaptive angle-adjustable soft-connection gravity loop heat pipe is in operation, the heat generated by the processor is first transferred through the bottom plate 11 of the evaporation assembly 1 to the R1233ZD working fluid (the working fluid can be selected as needed) inside the evaporation chamber 14. After absorbing heat, the working fluid's temperature rises to its boiling point and it boils, turning into steam. Subsequently, the steam is guided through the input hose 6 to the first gas-liquid pipe 21 in the condensation assembly 2. Inside the condensation assembly 2, due to the forced convection generated by the fan, the steam exchanges heat and releases heat as it flows through the fins 24 and the return flat tube 23. When the steam temperature drops to the liquefaction point, the steam condenses into a liquid working fluid.

[0035] Next, the condensed liquid working fluid flows into the second gas-liquid pipe 22 under gravity and returns to the evaporator 14 through the return hose 7. At this time, since the lower end of the return hose 7 is tangent to the lower end of the internal pipe of the second rotary joint 10, the liquid working fluid can smoothly overflow from the second gas-liquid pipe 22 and return to the evaporator 14 through the return hose 7, thus completing the entire gas-liquid circulation process.

[0036] Throughout the process, the angle adjustment component 4 allows the user to adjust the relative angle between the condenser component 2 and the evaporator component 1 according to the device's tilt angle, ensuring that the condenser component 2 remains perpendicular to the ground to maintain optimal condensation and evaporation efficiency. This design enables the heat pipe to adaptively adjust at different tilt angles, maintaining efficient heat exchange performance and thus meeting the heat dissipation requirements of high-power chips under various operating conditions.

[0037] The present invention also provides a radiator including the aforementioned adaptive angle-adjustable flexible gravity loop heat pipe. In the radiator of the above embodiments of the present invention, the adaptive angle-adjustable flexible gravity loop heat pipe includes an evaporation assembly 1, a condensation assembly 2, a connecting bracket 3, a medium inlet 5 communicating with the evaporation assembly 1, an input hose 6, and a return hose 7; the evaporation assembly 1 is fixedly connected to the bottom end of the connecting bracket 3, and the condensation assembly 2 is rotatably connected to the top end of the connecting bracket 3 via an angle adjustment component 4; the angle adjustment component 4 is used to adjust the relative angle between the condensation assembly 2 and the evaporation assembly 1; the medium is input into the evaporation assembly 1 through the medium inlet 5, absorbs heat to form steam, flows into the condensation assembly 2 through the input hose 6, completes heat exchange in the condensation assembly 2, and then returns to the evaporation assembly 1 through the return hose 7.

[0038] The radiator in the above embodiments of the present invention has significant beneficial effects. First, through the innovative design of the angle adjustment component 4, the condenser component 2 can flexibly adjust the relative angle between itself and the evaporator component 1 according to the tilt angle of the equipment, ensuring that the condenser component 2 always remains perpendicular to the ground. This significantly improves the heat dissipation efficiency of the heat pipe at different tilt angles and avoids the phenomenon of poor condensate return and reduced heat dissipation efficiency caused by equipment tilt. Second, the soft connection structure between the inlet hose 6 and the condenser component 2, and between the return hose 7 and the evaporator component 1, not only enhances the flexibility and adaptability of the loop heat pipe angle adjustment, but also ensures the smooth flow of the working fluid between the condenser component 2 and the evaporator component 1, further improving the reliability and stability of the system. In addition, the foamed aluminum block 13 used in the evaporator component 1 as a liquid absorber has high porosity and good thermal conductivity, which can quickly absorb and disperse heat, significantly improving the phase change heat transfer efficiency and avoiding the problem of working fluid drying and failure in the evaporator component 1. These innovations work together to enable the loop heat pipe of this invention to perform excellently in high-heat-flux-density applications such as high-power chips, and to meet the heat dissipation requirements under various complex operating conditions.

[0039] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A soft connection gravity loop heat pipe with angle adjustment, characterized in that, The utility model provides a kind of angle-adjustable soft connection gravity loop heat pipe, including evaporation component (1), condensation component (2), connecting support (3), and the medium injection inlet (5) being communicated with the evaporation component (1), input hose (6) and backflow hose (7);The evaporation component (1) is fixedly connected in the bottom end of the connecting support (3), and the condensation component (2) is rotatably connected in the top end of the connecting support (3) by angle adjusting component (4);The angle adjusting component (4) is used to adjust the relative angle between the condensation component (2) and the evaporation component (1); Medium is input into the evaporation component (1) by the medium injection inlet (5), and steam is formed after medium absorbs heat, flows into the condensation component (2) by the input hose (6), and after completing heat exchange in the condensation component (2), backflows to the evaporation component (1) by the backflow hose (7).

2. The angle-adaptable flexible connection gravity loop heat pipe of claim 1, wherein, The connecting support (3) includes a plurality of first vertical rods (31), a first horizontal rod (32) connected to the first vertical rods (31), and a mounting plate (33). The angle adjusting component (4) includes a worm gear (41), a worm shaft (42) engaged with the worm gear (41), a drive shaft (43) passing through the mounting plate (33) and connected to the worm shaft (42), a hand wheel (44) sleeved on the drive shaft (43), and a rotating shaft (45) passing through the first horizontal rod (32) and fixed to the side wall of the condensation component (2).

3. The angle-adaptable flexible connection gravity loop heat pipe of claim 2, wherein, The evaporation component (1) includes a bottom plate (11), a support column (12) disposed on the bottom plate (11), a foam aluminum block (13) sleeved on the support column (12), and an evaporation box (14) covering the outside of the foam aluminum block (13). The bottom plate (11) is connected to the first vertical rods (31).

4. The angle-adaptable flexible connection gravity loop heat pipe of claim 3, wherein, The condensation component (2) includes a condensation unit and a condensation housing (25) covering the outside of the condensation unit. The condensation unit includes a first gas-liquid pipe (21), a second gas-liquid pipe (22), and a plurality of evenly arranged backflow flat tubes (23) communicating between the first gas-liquid pipe (21) and the second gas-liquid pipe (22). Fins (24) are arranged between adjacent backflow flat tubes (23).

5. The angle-adaptable flexible connection gravity loop heat pipe of claim 4, wherein, It also includes a heat dissipation component (8) comprising a fan mounted on the outer wall of the condensation housing (25).

6. The angle-adaptable flexible connection gravity loop heat pipe of claim 4, wherein, One end of the input hose (6) communicates with the first gas-liquid pipe (21), and the other end communicates with the evaporation component (1) through a first rotary joint (9). One end of the backflow hose (7) communicates with the second gas-liquid pipe (22), and the other end communicates with the evaporation component (1) through a second rotary joint (10).

7. The angle-adaptable flexible connection gravity loop heat pipe of claim 6, wherein, The lower end of the backflow hose (7) is tangent to the lower end of the internal pipe of the second rotary joint (10).

8. A heat sink, characterized by The utility model provides a kind of angle-adjustable soft connection gravity loop heat pipe, including evaporation component (1), condensation component (2), connecting support (3), and the medium injection inlet (5) being communicated with the evaporation component (1), input hose (6) and backflow hose (7).

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