Microchannel heat sink

Abstract

The application relates to a tube-fin heat-siphon radiator, which comprises an evaporation main body with a cavity, a tube-fin condenser, and a phase-change working medium filled in the cavity; the tube-fin condenser comprises multiple groups of condensing units, each group of condensing units comprises a first radiating shell with a first chamber, a group of metal fins symmetrically arranged on both sides of the first radiating shell, a second radiating shell symmetrically arranged and with a second chamber, and a radiating pipeline; the first chamber comprises a first upper chamber and a first lower chamber; the radiating pipeline penetrates through the group of metal fins and connects the first upper chamber and the second chamber and connects the second chamber and the first lower chamber; the evaporation main body is provided with an air outlet pipeline and a liquid return pipeline; the air outlet pipeline connects the cavity and the first upper chamber; and the liquid return pipeline connects the first lower chamber and the cavity. The application reduces the heat diffusion resistance from a heat source to a radiating surface by using the high heat exchange coefficient of phase-change heat exchange, improves the radiating efficiency, and has a simple overall structure and reduced production process difficulty.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology, and in particular to a tube-finned thermosiphon radiator. Background Technology

[0002] With the rapid development of communication equipment, smart devices, big data, new energy, and other fields, the total heat dissipation demand of products and systems has increased dramatically. However, due to other constraints, the heat sources in many systems are concentrated, which further increases the power density of the heat sources. Faced with the ever-increasing heat dissipation demands, traditional radiators are gradually becoming insufficient, and more efficient cooling solutions are needed.

[0003] Most heat sinks on the market are serrated heat sinks, with the main body made of aluminum alloy using a serrated process, and heat pipes embedded in grooves cut into the side of the base plate. In existing heat dissipation technology, this traditional heat sink has the following problems: To achieve more efficient heat dissipation from the base plate, multiple heat pipes are required, but the mounting holes on the base plate limit the arrangement of the heat pipes, and each individual heat pipe has a heat transfer limit; embedding the heat pipes into the base plate only enhances heat conduction on the base plate surface, but cannot enhance heat conduction from the base plate to the surface of the heat dissipation fins; and the serrated fins, to ensure density and heat dissipation area, have a large height-to-thickness ratio, resulting in high thermal resistance in the height direction, which limits the heat dissipation efficiency of the heat sink fins. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a tube-finned thermosiphon radiator.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a tube-finned thermosiphon radiator, comprising an evaporator body having a cavity and a tube-finned condenser connected to the evaporator body, wherein the cavity is filled with a phase change working fluid;

[0006] The tube-fin condenser includes multiple condensing units. Each condensing unit includes a first heat dissipation shell with a first chamber, a metal fin group symmetrically arranged on both sides of the first heat dissipation shell, a second heat dissipation shell symmetrically arranged on both sides of the first heat dissipation shell and having a second chamber, and a heat dissipation pipe.

[0007] The first chamber includes a first upper chamber arranged from top to bottom and a first lower chamber isolated from the first upper chamber; the heat dissipation pipe passes through the metal fin assembly and connects the first upper chamber and the second chamber, and connects the second chamber and the first lower chamber;

[0008] The evaporator is provided with an exhaust pipe and a return pipe. The exhaust pipe connects the cavity of the evaporator to the first upper chamber, and the return pipe connects the first lower chamber to the cavity of the evaporator.

[0009] Furthermore, preferably, the second chamber in the second heat dissipation shell includes a second upper chamber arranged from top to bottom and a second lower chamber communicating with the second upper chamber;

[0010] The first upper chamber is connected to the second upper chamber through the heat dissipation pipe, and the first lower chamber is connected to the second lower chamber through the heat dissipation pipe.

[0011] Furthermore, it is preferable that the inner diameter of the second upper chamber is larger than the inner diameter of the second lower chamber.

[0012] Furthermore, it is preferable that the diameter of the gas outlet pipe is larger than the diameter of the liquid return pipe.

[0013] Furthermore, preferably, the evaporation body includes a bottom shell with a tank and a cover plate that matches the bottom shell, and the bottom shell and the cover plate together form the cavity.

[0014] Furthermore, preferably, a support column is provided in the cavity, and at least a portion of the end of the support column is provided with a step. The cover plate is provided with a mounting hole that matches the step, and the step is connected to the cover plate through the mounting hole.

[0015] Furthermore, it is preferable that the cavity of the evaporator body is provided with a turbulence fin assembly.

[0016] Furthermore, it is preferable that the evaporator body and the tube-fin condenser are separate structures, and the two can be detachably connected.

[0017] Furthermore, the second heat dissipation shell preferably includes an L-shaped side plate and a sealing plate. A groove is provided on one side of the side plate. After the side plate and the sealing plate are closed, the second chamber is defined at the groove. The other side of the side plate is connected to the evaporation body.

[0018] Furthermore, preferably, the sealing plate has a through hole corresponding to the heat dissipation pipe, and the heat dissipation pipe is sealed to the sealing plate through the through hole.

[0019] The present invention has the following beneficial effects: In the tube-fin thermosiphon radiator provided by the present invention, the phase change working fluid, after being heated and boiled by the heat source in the evaporator body, flows through the gas outlet pipe to the tube-fin condenser, where it condenses and releases heat, diffusing the heat to the metal fin assembly. The high heat transfer coefficient of the phase change heat transfer reduces the diffusion thermal resistance from the heat source to the heat dissipation surface, effectively improving the fin efficiency problem caused by the high conduction thermal resistance in the height direction of the metal fins. Furthermore, the gaseous phase change working fluid enters the first upper chamber through the gas outlet pipe, dividing into two heat dissipation channels. The heat exchanger passes through heat dissipation pipes on both sides and metal fins, condensing to form a liquid phase change working fluid. This fluid flows to the second chamber, then to the first lower chamber, and finally back to the evaporator via a return pipe, forming a heat dissipation cycle for the phase change working fluid, thus achieving efficient heat dissipation. The phase change heat exchanger reduces the internal diffusion thermal resistance of the radiator, and the tube-fin condenser has a higher fin density, making it more suitable for heat dissipation. The phase change working fluid exits through a single outlet pipe and returns through a single return pipe, resulting in a simple overall structure that reduces the technological difficulty of producing large-scale thermosiphon radiators. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0021] Figure 1 This is a partially exploded structural diagram of some embodiments of the tube-finned thermosiphon radiator of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of one direction of an embodiment of the tube-finned thermosiphon radiator of the present invention;

[0023] Figure 3 yes Figure 2 A structural diagram from another direction;

[0024] Figure 4 This is a partially exploded structural diagram of some embodiments of the condensation unit of the present invention;

[0025] Figure 5 These are exploded structural diagrams of some embodiments of the condensation unit of the present invention;

[0026] Figure 6 This is an exploded view of the structure of some embodiments of the evaporation body of the present invention. Detailed Implementation

[0027] To provide a clearer understanding of the technical features, objectives, and effects of this invention, specific embodiments are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or element referred to must have a specific orientation; therefore, they should not be construed as limitations on this invention.

[0028] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," "fixing," and "setting" 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. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0029] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the invention. However, those skilled in the art will understand that the invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the invention with unnecessary detail.

[0030] like Figures 1-3As shown, in some embodiments of the tube-finned thermosiphon radiator of the present invention, it includes an evaporator body 1 with a cavity and a tube-finned condenser 2 connected to the evaporator body 1. The cavity is filled with a phase change working fluid. The outer surface of the evaporator body 1 is in close contact with a heat source 3. When heated, the phase change working fluid evaporates into a gaseous state, transporting heat to the tube-finned condenser 2 for diffusion and heat dissipation. After heat exchange in the tube-finned condenser 2, the gaseous phase change working fluid condenses into a liquid state, utilizing phase change heat exchange to reduce the diffusion thermal resistance inside the radiator. The evaporator body 1 is made of a high thermal conductivity metal such as aluminum alloy or copper alloy, and contains a cavity, which can be formed by processes such as brazing and friction welding. The tube-finned condenser 2 is made of the same material as the evaporator body 1.

[0031] Furthermore, such as Figures 4-5 As shown, the tube-fin condenser 2 includes multiple condensing units 20. The number of condensing units 20 is set according to the size of the evaporator body 1, so that the condensing units 20 can cover the evaporator body 1. Each condensing unit 20 includes a first heat dissipation shell 21 with a first chamber, metal fin groups 22 symmetrically arranged on both sides of the first heat dissipation shell 21, a second heat dissipation shell 23 symmetrically arranged on both sides of the first heat dissipation shell 21 and having a second chamber, and a heat dissipation pipe 24. The first chamber and the second chamber are filled with a phase change working fluid. A filling port 234 is reserved in one of the second heat dissipation shells 23 for injecting the phase change working fluid into the tube-fin thermosiphon radiator. The first chamber includes a first upper chamber 2111 arranged from top to bottom and a first lower chamber 2112 isolated from the first upper chamber 2111; the heat dissipation pipe 24 passes through the metal fin assembly 22 and connects the first upper chamber 2111 and the second chamber, as well as connects the second chamber and the first lower chamber 2112; the evaporation body 1 is provided with an exhaust pipe 11 and a return pipe 12, the exhaust pipe 11 connects the cavity of the evaporation body 1 to the first upper chamber 2111, and the return pipe 12 connects the first lower chamber 2112 to the cavity of the evaporation body 1. The metal fin assembly 22 includes several heat dissipation fins that are spaced apart from each other and extend vertically. The metal fin assembly 22 is in contact with the heat dissipation pipe 24. The phase change working fluid in the heat dissipation pipe 24 has a low temperature and a high density, while the phase change working fluid in the first upper chamber 2111 connected to the metal fin assembly 22 has a relatively high temperature and a relatively low density. This results in a density difference between the working fluid in the metal fin assembly 22 and the first upper chamber 2111, allowing the working fluid in the first upper chamber 2111 to flow from the metal fin assembly 22 into the second chamber. In the second chamber, the phase change working fluid flows from top to bottom under the influence of gravity and wind direction, and flows through the heat dissipation pipe 24 in the lower metal fin assembly 22 to the first lower chamber 2112. It then returns to the evaporator body 1 through the return pipe 12, forming a cycle.

[0032] Furthermore, the heat dissipation pipe 24 and the metal fin assembly 22 can be composed of round pipes interlocked with fins, or they can be flat pipes with folded fins. The heat dissipation pipe 24 and the folded fins are welded together.

[0033] Furthermore, the first heat dissipation shell 21 is a shell structure with a first chamber inside. A partition can be installed in the first chamber to divide the first chamber into a first upper chamber 2111 and a second lower chamber 2112 that are isolated from each other. Alternatively, two mutually isolated first heat dissipation shells 21 can be directly provided, with the chamber in the upper first heat dissipation shell 21 being the first upper chamber 2111 and the chamber in the lower first heat dissipation shell 21 being the first lower chamber 2112.

[0034] The tube-finned thermosiphon radiator provided by this invention, after the phase change working fluid is heated and boiled by the heat source 3 in the evaporator body 1, flows through the gas outlet pipe 11 to the tube-finned condenser 2, where it condenses and releases heat, diffusing the heat to the metal fin assembly 22. The high heat transfer coefficient of the phase change heat transfer reduces the diffusion thermal resistance from the heat source 3 to the heat dissipation surface, effectively improving the fin efficiency problem caused by the high conduction thermal resistance in the height direction of the metal fins. Furthermore, the gaseous phase change working fluid enters the first upper chamber 2111 through the gas outlet pipe 11, dividing into two heat dissipation channels that flow to the heat dissipation surfaces on both sides. The heat pipe 24 exchanges heat with the metal fin assembly 22, condensing to form a liquid phase change working fluid, which flows to the second chamber, then to the first lower chamber 2112, and returns to the evaporator body 1 via the return liquid pipe 12, forming a heat dissipation cycle of the phase change working fluid, thereby achieving efficient heat dissipation; the phase change heat transfer reduces the diffusion thermal resistance inside the radiator, and the tube-fin condenser 2 has a higher fin density, making it more suitable for heat dissipation; the phase change working fluid is discharged through a single gas outlet pipe 11 and returned through a single liquid return pipe 12, resulting in a simple overall structure that reduces the difficulty of manufacturing large-scale thermosiphon radiators.

[0035] In one specific embodiment, the tube-finned thermosiphon radiator also includes a fan, which is disposed above the tube-finned condenser 2 and the airflow direction is directed toward the metal fin assembly 22, in order to accelerate the heat exchange between the phase change working fluid and the metal fin assembly 22, accelerate the condensation of the gaseous phase change working fluid into a liquid, and improve the heat dissipation rate.

[0036] In one specific embodiment, such as Figure 5As shown, the second chamber in the second heat dissipation shell 23 includes a second upper chamber 2311 arranged from top to bottom and a second lower chamber 2312 connected to the second upper chamber 2311. The first upper chamber 2111 is connected to the second upper chamber 2311 through a heat dissipation pipe 24, and the first lower chamber 2112 is connected to the second lower chamber 2312 through a heat dissipation pipe 24. It can be understood that when the gaseous phase change working fluid flows from the outlet pipe 11 to the first upper chamber 2111, the gaseous phase change working fluid is divided into two parts, which flow through the metal fin assembly 22 through the heat dissipation pipes 24 on both sides. After heat exchange, it condenses into a liquid state and flows to the second upper chamber 2311. Under the influence of gravity and wind, it flows to the second lower chamber 2312 and finally flows to the middle first lower chamber 2112. It returns to the evaporator body 1 through the return liquid pipe 12 of the first lower chamber 2112, forming a heat exchange cycle of the phase change working fluid.

[0037] In one specific embodiment, such as Figure 5 As shown, the volume of the second upper chamber 2311 is greater than the volume of the second lower chamber 2312. It can be understood that the cross-sectional area of ​​the second upper chamber 2311 is equal in size from top to bottom, and the cross-sectional area of ​​the second lower chamber 2312 is equal in size from top to bottom. Furthermore, the cross-sectional area of ​​the second upper chamber 2311 is larger than that of the second lower chamber 2312, so that the volume of the second upper chamber 2311 is greater than that of the second lower chamber 2312. This creates a pressure difference between the two chambers, ensuring that the pressure difference promotes the flow of the phase change working fluid from top to bottom and towards the first lower chamber 2112, thereby accelerating the circulation rate of the phase change working fluid and increasing the heat dissipation rate. Alternatively, the cross-section of the second upper chamber 2311 gradually decreases from top to bottom, and the cross-section of the second upper chamber 2311 is greater than or equal to the cross-section of the second lower chamber 2312, thereby creating a pressure difference between the second upper chamber 2311 and the second lower chamber 2312. This pressure difference ensures that the phase change working fluid flows from top to bottom and into the first lower chamber 2112, thereby accelerating the circulation rate of the phase change working fluid and accelerating the heat dissipation rate.

[0038] In one specific embodiment, such as Figure 6 As shown, the diameter of the outlet pipe 11 is larger than that of the return pipe 12, so that a pressure difference is formed between the outlet pipe 11 and the return pipe 12. This pressure difference ensures that the phase change working medium flows from the outlet pipe 11 to the return pipe 12, thereby accelerating the circulation rate of the phase change working medium and accelerating the heat dissipation rate.

[0039] In one specific embodiment, such as Figure 6As shown, the evaporation body 1 includes a bottom shell 13 with a tank 131 and a cover plate 14 that matches the bottom shell 13. The bottom shell 13 and the cover plate 14 form a cavity after being enclosed. The bottom shell 13 and the cover plate 14 are fixedly connected or detachably connected so that the cavity is sealed and does not leak. An air outlet and a liquid return outlet are reserved on the cover plate 14. An air outlet pipe 11 is installed on the air outlet and a liquid return pipe 12 is installed on the liquid return outlet.

[0040] In one specific embodiment, such as Figure 6 As shown, a support column 15 is provided inside the cavity, which can enhance the structural strength of the entire evaporation body 1. At least part of the support column 15 has a step 151 at its end, and the cover plate 14 has a mounting hole that matches the step 151. The step 151 is welded to the cover plate 14 through the mounting hole. Providing a step 151 at the end of the support column 15 and welding it can reduce the risk of leakage of the phase change working fluid.

[0041] In one specific embodiment, such as Figure 6 As shown, the evaporator body 1 is provided with a turbulence fin assembly 16 inside the cavity. The turbulence fin assembly 16 consists of parallel metal fins. The turbulence fin assembly 16 is set in the concentrated area of ​​the heat source 3. On the one hand, the turbulence fin assembly 16 can enhance the structural strength of the evaporator body 1. On the other hand, the turbulence fin assembly 16 can enhance boiling heat transfer and prevent the bubbles generated by the phase change working fluid from being too large when heated.

[0042] In one specific embodiment, the evaporator body 1 and the tube-fin condenser 2 are separate structures, detachably connected. It is understood that the evaporator body 1 and the tube-fin condenser 2 are modularized. The evaporator body 1 and the tube-fin condenser 2 are independently welded and assembled, and then fixedly connected by fasteners. An outlet pipe 11 and a return liquid pipe 12 are pre-installed for welding connection with the tube-fin condenser 2. Modular manufacturing reduces the manufacturing difficulty of large-scale thermosiphon radiators, making it easier to control the flatness of the evaporator body 1 and improve product yield through tooling or straightening measures during processing.

[0043] In one specific embodiment, such as Figure 5As shown, the second heat dissipation shell 23 includes an L-shaped side plate 232 and a sealing plate 233. It can be understood that the second heat dissipation shell 23 is formed by two plates enclosing each other, one of which is an L-shaped side plate 232 and the other is a flat sealing plate 233. A groove 2321 is provided on one side of the side plate 232. After the side plate 232 and the flat sealing plate 233 are closed, the groove 2321 defines the second chamber. The other side of the side plate 232 is connected to the evaporation body 1. This arrangement can reduce the weight of the second heat dissipation shell 23 and facilitate the fixing of the second heat dissipation shell 23 to the evaporation body 1, reduce the process difficulty and reduce the production cost. Furthermore, a reinforcing column is formed by the side plate 232 extending into the sealing plate 233. The setting of the reinforcing column can enhance the structural strength of the second heat dissipation shell 23.

[0044] Furthermore, such as Figure 5 As shown, the sealing plate 233 has a through hole 2331 corresponding to the heat dissipation pipe 24. The heat dissipation pipe 24 extends to the second chamber through the through hole 2331, sealing the heat dissipation pipe 24 and the sealing plate 233, so that the heat dissipation pipe 24 is connected to the second chamber, while preventing the leakage of the phase change working fluid.

[0045] In some specific embodiments, the evaporator body 1 is formed by combining a bottom shell 13 and a cover plate 14, and the material is aluminum alloy. The bottom shell 13 and the cover plate 14 are machined from aluminum alloy raw materials. The turbulence fin group 16 is formed by machining interlocking fins. The gas outlet pipe 11 and the liquid return pipe 12 are both aluminum tubes. After the parts are assembled and pressed together, they are brazed. After welding, the deformation is corrected and the heat source surface of the evaporator body 1 is shaped. The tube-fin condenser 2 is made of aluminum alloy. The first heat dissipation shell 21 is formed by machining profiles. The second heat dissipation shell 23 is formed by stamping. The metal fin group 22 is interlocking fins. The heat dissipation pipe 24 is an aluminum tube. After the parts are assembled and pressed together, they are brazed. The tube-fin condenser 2 and the evaporator body 1 are fastened with screws. The reserved connecting pipes (gas outlet pipe 11 and liquid return pipe 12) of the two are welded together. The phase change working fluid is filled through the filling port 234 of the second heat dissipation shell 23 and then sealed.

[0046] In some specific embodiments, the evaporator body 1 is formed by combining a bottom shell 13 and a cover plate 14, and the material is copper alloy. The bottom shell 13 and the cover plate 14 are machined from copper alloy raw materials. The turbulence fin group 16 is formed by machining interlocking fins. The gas outlet pipe 11 and the liquid return pipe 12 are both copper pipes. After the parts are assembled and pressed together, they are brazed. After welding, the deformation is corrected and the heat source surface of the evaporator body 1 is shaped. The tube-fin condenser 2 is made of copper alloy. The first heat dissipation shell 21 is formed by machining profiles. The second heat dissipation shell 23 is formed by stamping. The metal fin group 22 is interlocking fins. The heat dissipation pipe 24 is a copper pipe. After the parts are assembled and pressed together, they are brazed. The tube-fin condenser 2 and the evaporator body 1 are fastened with screws. The reserved connecting pipes (gas outlet pipe 11 and liquid return pipe 12) of the two are welded together. The phase change working fluid is filled through the filling port 234 of the second heat dissipation shell 23 and then sealed.

[0047] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can freely combine the above technical features without departing from the concept of the present invention, and can also make several modifications and improvements, all of which fall within the protection scope of the present invention. Therefore, all equivalent transformations and modifications made with respect to the scope of the claims of the present invention should fall within the scope of the claims of the present invention.

Claims

1. A tube-finned thermosiphon radiator, characterized in that, It includes an evaporator body (1) with a cavity and a tube-fin condenser (2) connected to the evaporator body (1), wherein the cavity is filled with a phase change working fluid; The tube-fin condenser (2) includes multiple condensing units (20), which are disposed on one side surface of the evaporator body (1). Each condensing unit (20) includes a first heat dissipation shell (21) with a first chamber, a metal fin group (22) symmetrically disposed on both sides of the first heat dissipation shell (21), a second heat dissipation shell (23) symmetrically disposed on both sides of the first heat dissipation shell (21) and having a second chamber, and a heat dissipation pipe (234). The first chamber includes a first upper chamber (2111) arranged from top to bottom and a first lower chamber (2112) isolated from the first upper chamber (2111); the heat dissipation pipe (234) passes through the metal fin assembly (22) and connects the first upper chamber (2111) and the second chamber, and connects the second chamber and the first lower chamber (2112); The evaporation body (1) is provided with an exhaust pipe (11) and a return pipe (12). The exhaust pipe (11) connects the cavity of the evaporation body (1) to the first upper chamber (2111), and the return pipe (12) connects the first lower chamber (2112) to the cavity of the evaporation body (1). The second chamber in the second heat dissipation shell (23) includes a second upper chamber (2311) arranged from top to bottom and a second lower chamber (2312) communicating with the second upper chamber (2311); The first upper chamber (2111) is connected to the second upper chamber (2311) through the heat dissipation pipe (234), and the first lower chamber (2112) is connected to the second lower chamber (2312) through the heat dissipation pipe (234); The volume of the second upper chamber (2311) is greater than the volume of the second lower chamber (2312).

2. The tube-finned thermosiphon radiator according to claim 1, characterized in that, The diameter of the outlet pipe (11) is larger than the diameter of the return pipe (12).

3. The tube-finned thermosiphon radiator according to claim 1, characterized in that, The evaporation body (1) includes a bottom shell (13) with a tank (131) and a cover plate (14) that matches the bottom shell (13). The bottom shell (13) and the cover plate (14) together form the cavity.

4. The tube-finned thermosiphon radiator according to claim 3, characterized in that, The cavity is provided with a support column (15), and at least part of the end of the support column (15) is provided with a step (151). The cover plate (14) is provided with a mounting hole (141) that is adapted to the step (151) and the step (151) is connected to the cover plate (14) through the mounting hole (141).

5. The tube-finned thermosiphon radiator according to claim 1, characterized in that, The evaporator body (1) is provided with a turbulence fin assembly (16) inside its cavity.

6. The tube-finned thermosiphon radiator according to claim 1, characterized in that, The evaporator (1) and the tube-fin condenser (2) are separate structures, and the two can be detachably connected.

7. The tube-finned thermosiphon radiator according to claim 1, characterized in that, The second heat dissipation shell (23) includes an L-shaped side plate (232) and a sealing plate (233). A groove (2321) is provided on one side of the side plate (232). After the side plate (232) and the sealing plate (233) are closed, the second chamber is defined at the groove (2321). The other side of the side plate (232) is connected to the evaporation body (1).

8. The tube-finned thermosiphon radiator according to claim 7, characterized in that, The sealing plate (233) has a through hole (2331) corresponding to the heat dissipation pipe (234), and the heat dissipation pipe (234) is sealed to the sealing plate (233) through the through hole (2331).

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