Metal tube fin radiator

Abstract

The present invention relates to a metal tube fin heat sink applied in the field of heat dissipation technology, comprising a heat exchange tube, a first heat exchange layer, a second heat exchange layer, a heat conductive block, a thermoelectric block, a heat conductive pipe, a strain fin and a coil. An evaporation chamber is arranged in the heat exchange layer, the evaporation chamber is filled with mediums with different boiling points, the heat conductive pipe is filled with heat conductive magnetic fluid, the outer wall of the heat conductive pipe is connected with a strain fin, the strain fin is composed of metal sheets with different thermal expansion coefficients, the system also includes a temperature sensor and a controller to realize intelligent temperature monitoring and adaptive adjustment, the heat sink realizes efficient and adaptive heat dissipation effect through a multi-stage heat transfer structure, phase change heat dissipation, magnetic fluid assisted heat dissipation and intelligent deformable fins, the thermoelectric conversion mechanism uses temperature difference energy to enhance heat dissipation, further improving system efficiency, and accurate temperature monitoring and intelligent control system ensure the best performance of the radiator under various working conditions.

Description

Technical Field

[0001] The invention relates to a metal tube fin radiator, in particular to a metal tube fin radiator applied in the technical field of heat dissipation. Background Art

[0002] The metal tube fin heat sink is a thermal management solution widely used in electronic equipment, industrial equipment and other scenarios that require efficient heat dissipation. It consists of a high thermal conductivity metal tube and fins that are closely connected to it, and achieves efficient heat dissipation by quickly conducting heat and increasing the heat dissipation area. This heat sink has a compact structure, high efficiency, good reliability, and good customizability, and can meet various heat dissipation needs from small electronic devices to large industrial applications. With the advancement of technology, metal tube fin heat sinks are moving towards material innovation, structural optimization, intelligence, and miniaturization to meet the growing heat dissipation challenges, especially in the field of high power density electronic equipment and new energy. Its high efficiency and versatility make it an indispensable component of modern heat dissipation technology.

[0003] Chinese invention patent CN109341401B discloses a cascaded slotted heat sink, which increases the contact area between the fin and the base and reduces thermal resistance through a special bent fin design. Although this design improves heat dissipation performance and assembly reliability, it is still limited to passive heat dissipation and cannot adaptively adjust the heat dissipation efficiency according to temperature changes.

[0004] Chinese invention patent CN108323099B proposes a finned heat pipe coupled radiator, which combines fin cooling and heat pipe technology to improve the heat transfer speed. However, the design still lacks active heat dissipation and intelligent control mechanism, making it difficult to cope with complex and changing heat dissipation requirements.

[0005] The above designs improve heat dissipation efficiency through structural optimization and heat pipe technology, but there are still certain limitations, such as lack of adaptive adjustment capability, inability to achieve intelligent control, and insufficient heat dissipation efficiency in high temperature environments. In addition, these designs have limited applicability in special application scenarios such as high-power density electronic equipment and aerospace.

[0006] Therefore, developing a new type of radiator that can achieve efficient, intelligent and adaptive heat dissipation in a limited space has important economic value and market prospects. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to achieve more efficient heat transfer and heat dissipation in a limited space, so that the radiator can adaptively adjust the heat dissipation efficiency according to temperature changes.

[0008] To solve the above problems, the present invention provides a metal tube fin radiator, including a heat exchange tube, a first heat exchange layer is fixedly connected to the outer wall of the heat exchange tube, a second heat exchange layer is fixedly connected to the outer wall of the first heat exchange layer, a heat conductive block is fixedly connected to the outer wall of the second heat exchange layer, both ends of the heat conductive block along the axial direction of the heat exchange tube are fixedly connected to thermoelectric blocks, a heat conductive tube is fixedly connected inside the heat conductive block, a plurality of strain fins distributed in sequence are fixedly connected to the outer wall of the heat conductive tube, a coil is wound around the outer wall of the heat conductive tube away from one end of the heat exchange tube, two thermoelectric blocks are arranged in series, a controller is electrically connected between the coil and the series-connected thermoelectric blocks, the strain fin is a bimetallic strip, the hot end of the thermoelectric block is fixedly connected to the heat conductive tube, and the cold end is fixedly connected to the outer wall of the second heat exchange layer, and the thermoelectric block is a temperature difference thermocouple.

[0009] As a further improvement of the present application, the first heat exchange layer and the second heat exchange layer are both annular structures, and the first heat exchange layer and the second heat exchange layer are respectively provided with a first evaporation chamber and a second evaporation chamber, and the first evaporation chamber and the second evaporation chamber are also annular structures.

[0010] As a further improvement of the present application, the first evaporation chamber and the second evaporation chamber are respectively filled with media with different boiling points, and the volume of the media filling does not exceed two-thirds of the volume of the first evaporation chamber and the second evaporation chamber.

[0011] As a further improvement of the present application, the heat exchange tube, the first heat exchange layer, the second heat exchange layer and the heat conduction block are coated with thermal grease, and the inner walls of the first evaporation chamber and the second evaporation chamber are both attached with a porous metal layer. The inner wall of the heat conduction tube is attached with a porous metal layer.

[0012] As another improvement of the present application, the heat pipe is filled with a heat-conducting magnetic fluid, the heat pipe is made of non-magnetic material, the heat pipe is a rectangular structure, and the part located inside the rectangular structure is fixedly connected with multiple heat dissipation fins corresponding to the strain fins one by one.

[0013] As another improved supplement of the present application, the strain fin includes a first metal sheet and a second metal sheet which are fixedly connected in parallel, and the first metal sheet and the second metal sheet both include a first expansion block and a second expansion block.

[0014] As another improved supplement of the present application, the first expansion block and the second expansion block on the same first metal sheet and the second metal sheet are arranged alternately in sequence, and the first expansion block and the second expansion block on the first metal sheet and the second metal sheet are arranged alternately. The thermal expansion coefficient of the first expansion block is greater than the thermal expansion coefficient of the second expansion block.

[0015] As another improvement of the present application, the heat exchange tube is made of copper or aluminum alloy with high thermal conductivity; the first heat exchange layer and the second heat exchange layer are made of graphene composite materials with high thermal conductivity; the heat conductive block is made of high-purity copper; the heat conductive pipe is made of stainless steel or titanium alloy with good thermal conductivity; the first expansion block in the strain fin is made of Invar alloy, and the second expansion block is made of aluminum.

[0016] It also includes multiple temperature sensors, which are respectively arranged on the heat exchange tube, the first heat exchange layer, the second heat exchange layer, the heat conductive block and the heat conductive tube, and the temperature sensors are electrically connected to the controller; the controller comprehensively analyzes the temperature distribution of the system based on the temperature data detected by each temperature sensor and the voltage data of the thermoelectric block, and accurately adjusts the current size of the coil and the flow direction of the magnetic fluid accordingly, so as to achieve more sophisticated adaptive heat dissipation control.

[0017] The heat dissipation method of the metal tube fin heat sink comprises the following steps:

[0018] S1. Pass the medium to be cooled into the heat exchange tube;

[0019] S2, the heat of the heat exchange tube is transferred to the first heat exchange layer and the second heat exchange layer in turn, causing the evaporation of the medium in the first evaporation chamber and the second evaporation chamber, thereby realizing multi-stage heat transfer;

[0020] S3, heat is transferred to the heat pipe through the heat conduction block, and then transferred from the heat conduction pipe to the strain fin and the heat dissipation fin;

[0021] S4. Under the action of temperature difference, the thermoelectric block generates a potential difference, driving the coil to generate current and magnetic field, which drives the magnetic fluid in the heat pipe to accelerate the circulation flow;

[0022] S5. After the strain fin is heated, due to the difference in thermal expansion coefficients between the first expansion block and the second expansion block, the strain fin is deformed into a wave shape, and the degree of deformation increases with increasing temperature;

[0023] S6. The controller determines the temperature difference by monitoring the voltage of the thermoelectric block and adjusts the current of the coil accordingly, thereby controlling the flow speed and direction of the magnetic fluid and achieving adaptive heat dissipation regulation.

[0024] In summary, this application has the following beneficial effects:

[0025] 1. Efficient multi-stage heat transfer. The combined structure of heat exchange tubes, multi-layer heat exchange layers and evaporation chambers is adopted to achieve efficient multi-stage heat transfer. The evaporation chamber in the heat exchange layer utilizes the latent heat of medium phase change to greatly improve the heat transfer efficiency. At the same time, this structure effectively prevents heat from conducting in reverse, ensuring that heat is quickly transferred from the heat source to the heat dissipation components. The optimized selection of materials, such as the use of copper, aluminum alloy and graphene composite materials with high thermal conductivity, further enhances the heat conduction efficiency.

[0026] 2. Intelligent adaptive heat dissipation structure, the strain fin adopts an innovative bimetallic structure design, which includes expansion blocks with different thermal expansion coefficients, so that the fin can automatically adjust its shape according to the temperature, forming a wavy shape at high temperature, increasing the contact area with the air, and the heat-conducting magnetic fluid filled in the heat pipe combined with the magnetic field generated by the external coil forms a magnetic field-driven fluid circulation system, which enhances the convection heat dissipation effect and realizes the adaptive adjustment of the radiator to different temperature conditions.

[0027] 3. Thermoelectric conversion and precise control. The system integrates thermoelectric blocks (temperature difference thermocouples) to convert temperature differences into electrical energy to drive coils to generate magnetic fields, forming a self-driven heat dissipation enhancement mechanism. Multiple temperature sensors are distributed in key parts of the system. Combined with the intelligent analysis of the controller, real-time and precise monitoring of the system temperature is achieved. The controller comprehensively analyzes temperature data and thermoelectric block voltage, accurately adjusts coil current and magnetic fluid flow, and achieves highly intelligent adaptive heat dissipation control.

[0028] 4. Integration of multiple heat dissipation mechanisms. This patent integrates multiple heat dissipation methods such as conduction, phase change, convection, and thermoelectric conversion. The rectangular structure of the heat pipe and the internal heat dissipation fins increase the heat exchange area. The application of thermal grease and porous metal layers between components optimizes the heat conduction effect. The combination of multiple heat dissipation mechanisms improves the overall heat dissipation efficiency, enabling the system to cope with various heat dissipation needs.

[0029] 5. High adaptability and reliability. The system can automatically adjust the heat dissipation strategy according to different temperature conditions. It is suitable for various working environments and load conditions. From low temperature to high temperature, from stable operation to instantaneous high load, it can maintain efficient heat dissipation. Precise temperature control and multiple heat dissipation mechanisms reduce the risk of system overheating, improve the reliability and service life of the equipment, and make the radiator widely applicable in various high-end electronic equipment and industrial applications.

[0030] 6. Energy saving, environmental protection and application prospects. Through efficient heat dissipation and precise control, the system reduces energy consumption and improves overall energy efficiency, which meets modern energy-saving and environmental protection requirements. The efficient, intelligent and adaptive heat dissipation system is particularly suitable for scenarios that require precise temperature control and high heat dissipation efficiency, such as high-performance computing equipment, power electronic equipment, aerospace equipment, etc. Its excellent performance and broad application prospects make it of great value in various high-tech fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is the overall structure diagram of this application;

[0032] Figure 2 This is the front view of the application;

[0033] Figure 3 For this application Figure 2 Middle AA section view;

[0034] Figure 4 For this application Figure 3 Enlarged view of point C in the middle;

[0035] Figure 5 For this application Figure 3 Middle BB section view;

[0036] Figure 6 This is an overall exploded view of this application;

[0037] Figure 7 Partial explosion for this application Figure 1 ;

[0038] Figure 8 Partial explosion for this application Figure 2 ;

[0039] Fig. 9 Partial explosion for this application Figure 3 ;

[0040] Fig.10 Partial explosion for this application Figure 4 ;

[0041] Fig.11 This is the appearance structure diagram of this application.

[0042] Description of the numbers in the figure:

[0043] 1. heat exchange tube; 2. first heat exchange layer; 3. second heat exchange layer; 4. heat conduction block; 5. thermoelectric block; 6. heat conduction tube; 7. strain fin; 8. coil; 9. first evaporation chamber; 10. second evaporation chamber; 11. heat dissipation fin; 12. first metal sheet; 13. second metal sheet; 14. first expansion block; 15. second expansion block. DETAILED DESCRIPTION

[0044] Four implementation modes of the present application are described in detail below with reference to the accompanying drawings. Example

[0045] The metal tube fin heat sink of this embodiment includes a heat exchange tube 1, the outer wall of the heat exchange tube 1 is fixedly connected with a first heat exchange layer 2, and the outer wall of the first heat exchange layer 2 is fixedly connected with a second heat exchange layer 3. The outer wall of the second heat exchange layer 3 is fixedly connected with a heat conduction block 4. Both ends of the heat conduction block 4 along the axial direction of the heat exchange tube 1 are fixedly connected with thermoelectric blocks 5. A heat conduction pipe 6 is fixedly connected inside the heat conduction block 4, and a plurality of strain fins 7 distributed in sequence are fixedly connected to the outer wall of the heat conduction pipe 6. A coil 8 is wound around the outer wall of the heat conduction pipe 6 away from the end of the heat exchange tube 1.

[0046] Two thermoelectric blocks 5 are arranged in series, and a controller is electrically connected between the coil 8 and the series thermoelectric blocks 5. The strain fin 7 is a bimetallic strip. The hot end of the thermoelectric block 5 is fixedly connected to the heat pipe 6, and the cold end is fixedly connected to the outer wall of the second heat exchange layer 3. The thermoelectric block 5 is a temperature difference thermocouple.

[0047] The first heat exchange layer 2 and the second heat exchange layer 3 are both annular structures, and are respectively provided with a first evaporation chamber 9 and a second evaporation chamber 10, which are also annular structures. The first evaporation chamber 9 and the second evaporation chamber 10 are respectively filled with media with different boiling points, and the volume of the media filling does not exceed two-thirds of the volume of each evaporation chamber.

[0048] Thermal grease is applied between the heat exchange tube 1, the first heat exchange layer 2, the second heat exchange layer 3 and the heat conduction block 4. The inner walls of the first evaporation chamber 9 and the second evaporation chamber 10, as well as the inner wall of the heat conduction tube 6, are all attached with a porous metal layer.

[0049] The medium that needs to be cooled is passed into the heat exchange tube 1. The heat of the heat exchange tube 1 is first conducted to the first heat exchange layer 2, causing the evaporation of the medium in the first evaporation chamber 9. The evaporation heat continues to be transferred to the second heat exchange layer 3, causing the evaporation of the medium in the second evaporation chamber 10. The heat is transferred to the heat pipe 6 through the heat conductive block 4, and then transferred from the heat conductive pipe 6 to the strain fin 7. Under the action of the temperature difference, the thermoelectric block 5 generates an electric potential difference, driving the coil 8 to generate current and magnetic field. After the strain fin 7 is heated, it is deformed due to the difference in thermal expansion coefficient of the bimetallic structure. The controller determines the temperature difference by monitoring the voltage of the thermoelectric block 5, and adjusts the current of the coil 8 accordingly to achieve adaptive heat dissipation regulation.

[0050] Through the multi-level structure of the heat exchange tube 1, the first heat exchange layer 2 and the second heat exchange layer 3, efficient heat transfer is achieved while reducing the possibility of reverse heat transfer.

[0051] The evaporation process of the medium in the first evaporation chamber 9 and the second evaporation chamber 10 absorbs a large amount of heat, thereby improving the heat dissipation efficiency. The cooperation between the thermoelectric block 5 and the controller realizes real-time monitoring and adaptive adjustment of the temperature difference, making the heat dissipation process more intelligent and efficient. It combines multiple heat dissipation methods such as conduction, phase change, and convection to significantly improve the heat dissipation effect. The use of thermal conductive silicone grease improves the thermal contact between the components. The porous metal layer increases the heat exchange area, further improving the heat dissipation efficiency. The bimetallic structure of the strain fin 7 enables it to automatically adjust its shape according to the temperature, increase the contact area with the air, and improve the heat dissipation effect. The magnetic field generated by the coil 8 can be used to assist in heat dissipation, providing additional heat dissipation power for the system.

[0052] This embodiment achieves efficient, intelligent, and adaptive heat dissipation effects, and is suitable for various application scenarios requiring high-performance heat dissipation. Example

[0053] On the basis of Example 1, the metal tube fin heat sink of this embodiment focuses on the structural features of the heat pipe 6 and the strain fin 7. The heat pipe 6 is filled with a heat-conducting magnetic fluid, and the heat pipe 6 itself is made of non-magnetic material. The heat pipe 6 adopts a rectangular structure design, and a plurality of heat dissipation fins 11 are fixedly connected inside it, and these heat dissipation fins 11 correspond one by one to the external strain fins 7.

[0054] The structural design of the strain fin 7 is very sophisticated, including a first metal sheet 12 and a second metal sheet 13 that are fixedly connected in parallel. Each metal sheet includes a first expansion block 14 and a second expansion block 15. On the same metal sheet, the first expansion blocks 14 and the second expansion blocks 15 are arranged alternately. Moreover, the expansion blocks on the first metal sheet 12 and the second metal sheet 13 are staggered to form a well-arranged structure. It is worth noting that the thermal expansion coefficient of the first expansion block 14 is greater than the thermal expansion coefficient of the second expansion block 15.

[0055] Heat is transferred from the heat exchange tube 1 to the heat pipe 6, and the heat-conducting magnetic fluid in the heat pipe 6 begins to flow, distributing the heat evenly to the entire heat pipe 6. The heat is transferred to the internal heat dissipation fins 11 and the external strain fins 7 through the heat pipe 6. As the temperature rises, the strain fins 7 begin to deform. The first expansion block 14 expands more due to its larger thermal expansion coefficient, and the second expansion block 15 expands less. The alternating arrangement of the two expansion blocks causes the strain fins 7 to deform in a wave-like manner. The deformation of the strain fins 7 increases its contact area with the surrounding air. At the same time, the internal heat dissipation fins 11 continue to transfer heat to the heat pipe 6 and the strain fins 7. The magnetic field generated by the coil 8 acts on the heat-conducting magnetic fluid to promote its flow, further enhancing heat transfer.

[0056] The heat-conducting magnetic fluid in the heat pipe 6 can transfer heat quickly and evenly, thereby improving the overall heat dissipation efficiency. The heat pipe 6 made of non-magnetic material cooperates with the heat-conducting magnetic fluid inside to generate flow under the action of an external magnetic field, thereby enhancing the convective heat dissipation effect. The cooperation between the internal heat dissipation fins 11 and the external strain fins 7 increases the heat dissipation area and improves the heat dissipation efficiency. The special structural design of the strain fins 7 enables them to automatically adjust their shape according to the temperature, forming a wavy shape at high temperatures, thereby increasing the contact area with the air and changing the flow state of the airflow boundary layer to accelerate heat dissipation. Through the difference in thermal expansion coefficients between the first expansion block 14 and the second expansion block 15, an accurate response to temperature changes is achieved. The staggered arrangement design of the expansion blocks makes the deformation of the strain fins 7 more uniform and stable, thereby improving the reliability of the radiator, enabling the radiator to automatically adapt to different temperature environments, and maintaining efficient heat dissipation under various working conditions. The deformation of the strain fins 7 does not require external energy input, and is an energy-saving heat dissipation optimization solution.

[0057] This embodiment achieves efficient and adaptive heat dissipation through the heat pipe design and the intelligently deformed strain fins 7, and is particularly suitable for application scenarios that require precise temperature control and high heat dissipation efficiency. Example

[0058] Based on Examples 1 and 2, the metal tube fin heat sink of this embodiment focuses on the material selection of each component and the temperature monitoring system. The heat exchange tube 1 is made of copper or aluminum alloy with high thermal conductivity. The first heat exchange layer 2 and the second heat exchange layer 3 are made of graphene composite materials with high thermal conductivity. The heat conduction block 4 is made of high-purity copper. The heat conduction pipe 6 is made of stainless steel or titanium alloy with good thermal conductivity. In the strain fin 7, the first expansion block 14 is made of Invar alloy, and the second expansion block 15 is made of aluminum.

[0059] In addition, the radiator is also equipped with a plurality of temperature sensors, which are respectively installed on the heat exchange tube 1, the first heat exchange layer 2, the second heat exchange layer 3, the heat conduction block 4 and the heat conduction tube 6. These temperature sensors are electrically connected to the controller to form a complete temperature monitoring network.

[0060] Each component begins to conduct heat according to its material properties. The heat exchange tube 1 quickly absorbs and transfers heat. The first heat exchange layer 2 and the second heat exchange layer 3 conduct heat efficiently. The heat conductive block 4 quickly transfers heat to the heat conductive tube 6. The heat conductive tube 6 evenly disperses the heat. The first expansion block 14 and the second expansion block 15 of the strain fin 7 expand to different degrees due to material differences. The temperature sensor continuously monitors the temperature of each key part and transmits the data to the controller. The controller also receives the voltage data of the thermoelectric block 5. The controller comprehensively analyzes all temperature data and voltage data to generate a system temperature distribution diagram. Based on the analysis results, the controller accurately adjusts the current of the coil 8. The magnetic field generated by the coil 8 affects the flow direction and speed of the magnetic fluid in the heat conductive tube 6. The whole process continues to achieve real-time and precise adaptive heat dissipation control.

[0061] By selecting materials with high thermal conductivity, such as copper, aluminum alloy and graphene composite materials, the overall thermal conductivity efficiency of the radiator is improved. The combination of Invar alloy and aluminum enables the strain fin 7 to respond more accurately to temperature changes. The setting of multiple temperature sensors realizes real-time monitoring of the temperature of key parts of the radiator and provides comprehensive temperature data. The controller can comprehensively analyze the data of the temperature sensor and the thermoelectric block 5 to generate an accurate system temperature distribution map. Based on the comprehensive temperature data, the controller can accurately adjust the current of the coil 8, thereby achieving more sophisticated heat dissipation control. By adjusting the magnetic field, the flow of magnetic fluid in the heat pipe 6 can be accurately controlled to further optimize the heat dissipation effect. The combination of material selection and intelligent control enables the radiator to maintain efficient heat dissipation performance under various working conditions. The adaptive control system enables the radiator to automatically adjust its heat dissipation strategy according to different working environments and heat loads. Real-time monitoring and control reduce the risk of system overheating and improve the reliability and service life of the radiator. Accurate temperature control and efficient heat dissipation performance help reduce energy consumption and improve the overall energy efficiency of the system.

[0062] This embodiment achieves efficient, accurate and adaptive heat dissipation control through the application of materials and the integration of an intelligent temperature monitoring system, and is particularly suitable for high-end electronic equipment and industrial applications that have strict requirements on temperature control. Example

[0063] Based on embodiments 1, 2 and 3, this embodiment describes a heat dissipation method using a metal tube fin heat sink. The heat sink includes a heat exchange tube 1, a first heat exchange layer 2, a second heat exchange layer 3, a heat conduction block 4, a thermoelectric block 5, a heat conduction pipe 6, a strain fin 7, a coil 8, a first evaporation chamber 9, a second evaporation chamber 10 and a heat dissipation fin 11. The strain fin 7 is composed of a first metal sheet 12 and a second metal sheet 13, each of which includes a first expansion block 14 and a second expansion block 15. The entire system is intelligently controlled by a controller.

[0064] S1: The medium to be cooled is introduced into the heat exchange tube 1.

[0065] S2: Heat is transferred from the heat exchange tube 1 to the first heat exchange layer 2 and the second heat exchange layer 3 in sequence. This process causes the evaporation of the medium in the first evaporation chamber 9 and the second evaporation chamber 10, thus realizing multi-stage heat transfer. At the same time, this structural design makes it difficult for heat to be transferred back from the heat exchange layer to the heat exchange tube 1.

[0066] S3: The heat is transferred to the heat pipe 6 through the heat conducting block 4, and then transferred from the heat pipe 6 to the strain fins 7 and the heat dissipation fins 11, and finally dissipated to the surrounding air. The magnetic fluid in the heat pipe 6 automatically circulates under the action of the temperature difference.

[0067] S4: The temperature difference between the second heat exchange layer 3 and the strain fin 7 generates a potential difference in the thermoelectric block 5. This potential difference drives the coil 8 to generate current and magnetic field, which in turn promotes the magnetic fluid in the heat pipe 6 to accelerate the circulation flow and increase the heat dissipation speed.

[0068] S5: After the strain fin 7 is heated, the strain fin 7 is deformed into a wave shape due to the difference in thermal expansion coefficients between the first expansion block 14 and the second expansion block 15. The degree of deformation increases with increasing temperature. This design enables the expansion blocks on the first metal sheet 12 and the second metal sheet 13 to be staggered, further enhancing the deformation effect.

[0069] S6: The controller determines the temperature difference by monitoring the voltage of the thermoelectric block 5, and adjusts the current of the coil 8 accordingly, thereby accurately controlling the flow speed and direction of the magnetic fluid and realizing adaptive heat dissipation regulation.

[0070] Through the multi-level structure of the heat exchange tube 1, the first heat exchange layer 2 and the second heat exchange layer 3, efficient heat transfer is achieved, and reverse heat transfer is prevented. The evaporation process of the medium in the first evaporation chamber 9 and the second evaporation chamber 10 absorbs a large amount of heat, which significantly improves the heat dissipation efficiency. The magnetic fluid in the heat pipe 6 automatically circulates under the action of temperature difference and magnetic field, enhancing the convection heat dissipation effect. The thermoelectric block 5 converts the temperature difference into electrical energy, drives the coil 8 to generate a magnetic field, and forms a self-driven heat dissipation enhancement system. The special design of the strain fin 7 enables it to automatically adjust its shape according to the temperature, increase the contact area with the air, and improve the heat dissipation effect. The voltage of the thermoelectric block 5 is monitored by the controller to achieve accurate judgment and control of the system temperature difference. The controller can automatically adjust the current of the coil 8 according to the temperature difference, thereby accurately controlling the flow of the magnetic fluid and realizing adaptive heat dissipation. It combines multiple heat dissipation methods such as conduction, phase change, convection, and thermoelectric conversion to improve the heat dissipation efficiency. The wavy deformation of the strain fin 7 changes the flow state of the surface gas, further enhancing the heat dissipation effect. The system can automatically adjust the heat dissipation strategy according to different temperature conditions and is suitable for various working environments.

[0071] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. Metal tube fin radiator, characterized in that: The invention comprises a heat exchange tube (1), wherein the outer wall of the heat exchange tube (1) is fixedly connected to a first heat exchange layer (2), the outer wall of the first heat exchange layer (2) is fixedly connected to a second heat exchange layer (3), the outer wall of the second heat exchange layer (3) is fixedly connected to a heat conduction block (4), both ends of the heat conduction block (4) along the axial direction of the heat exchange tube (1) are fixedly connected to thermoelectric blocks (5), a heat conduction tube (6) is fixedly connected inside the heat conduction block (4), a plurality of strain fins (7) distributed in sequence are fixedly connected to the outer wall of the heat conduction tube (6), a coil (8) is wound around the outer wall of the heat conduction tube (6) away from the heat exchange tube (1), two thermoelectric blocks (5) are arranged in series, a controller is electrically connected between the coil (8) and the series-connected thermoelectric blocks (5), the strain fin (7) is a bimetallic sheet, the hot end of the thermoelectric block (5) is fixedly connected to the heat conduction tube (6), and the cold end is fixedly connected to the outer wall of the second heat exchange layer (3), and the thermoelectric block (5) is a temperature difference thermocouple; The strain fin (7) comprises a first metal sheet (12) and a second metal sheet (13) which are parallel and fixedly connected, and the first metal sheet (12) and the second metal sheet (13) both comprise a first expansion block (14) and a second expansion block (15); The first expansion blocks (14) and the second expansion blocks (15) on the same first metal sheet (12) and the second metal sheet (13) are arranged alternately in sequence, the first expansion blocks (14) and the second expansion blocks (15) on the first metal sheet (12) and the second metal sheet (13) are arranged in a staggered manner, and the thermal expansion coefficient of the first expansion block (14) is greater than the thermal expansion coefficient of the second expansion block (15); The heat exchange tube (1) is made of copper or aluminum alloy with high thermal conductivity; the first heat exchange layer (2) and the second heat exchange layer (3) are made of graphene composite materials with high thermal conductivity; the heat conduction block (4) is made of high-purity copper; the heat conduction tube (6) is made of stainless steel or titanium alloy with good thermal conductivity; the first expansion block (14) in the strain fin (7) is made of Invar alloy, and the second expansion block (15) is made of aluminum.

2. The metal tube fin heat sink according to claim 1, characterized in that: The first heat exchange layer (2) and the second heat exchange layer (3) are both annular structures, and a first evaporation chamber (9) and a second evaporation chamber (10) are respectively provided in the first heat exchange layer (2) and the second heat exchange layer (3), and the first evaporation chamber (9) and the second evaporation chamber (10) are also annular structures.

3. The metal tube fin heat sink according to claim 2, characterized in that: The first evaporation chamber (9) and the second evaporation chamber (10) are respectively filled with media with different boiling points, and the volume of the media filled does not exceed two thirds of the volume of the first evaporation chamber (9) and the second evaporation chamber (10).

4. The metal tube fin heat sink according to claim 2, characterized in that: The heat exchange tube (1), the first heat exchange layer (2), the second heat exchange layer (3) and the heat conductive block (4) are all coated with thermal grease, the inner walls of the first evaporation chamber (9) and the second evaporation chamber (10) are both attached with a porous metal layer, and the inner wall of the heat conductive tube (6) is attached with a porous metal layer.

5. The metal tube fin heat sink according to claim 1, characterized in that: The heat conducting pipe (6) is filled with a heat conducting magnetic fluid. The heat conducting pipe (6) is made of a non-magnetic material. The heat conducting pipe (6) is a rectangular structure, and a portion located inside the rectangular structure is fixedly connected to a plurality of heat dissipation fins (11) corresponding one to one with the strain fins (7).

6. The metal tube fin heat sink according to claim 5, characterized in that: The system further comprises a plurality of temperature sensors, the temperature sensors being respectively arranged on the heat exchange tube (1), the first heat exchange layer (2), the second heat exchange layer (3), the heat conduction block (4) and the heat conduction tube (6), and the temperature sensors being electrically connected to a controller; the controller comprehensively analyzes the temperature distribution of the system based on the temperature data detected by each temperature sensor and the voltage data of the thermoelectric block (5), and accordingly accurately adjusts the current size of the coil (8) and the flow direction of the magnetic fluid, thereby achieving more sophisticated adaptive heat dissipation control.

7. The heat dissipation method of the metal tube fin heat sink according to claim 6, characterized in that: The following steps are involved: S1, passing the medium to be cooled into the heat exchange tube (1); S2, the heat of the heat exchange tube (1) is transferred to the first heat exchange layer (2) and the second heat exchange layer (3) in sequence, causing the medium in the first evaporation chamber (9) and the second evaporation chamber (10) to evaporate, thereby realizing multi-stage heat transfer; S3, heat is transferred to the heat pipe (6) through the heat conduction block (4), and then transferred from the heat conduction pipe (6) to the strain fin (7) and the heat dissipation fin (11); S4. Under the action of the temperature difference, the thermoelectric block (5) generates a potential difference, and the driving coil (8) generates an electric current and a magnetic field, which drives the magnetic fluid in the heat pipe (6) to accelerate the circulation flow; S5, after the strain fin (7) is heated, due to the difference in thermal expansion coefficients between the first expansion block (14) and the second expansion block (15), the strain fin (7) is deformed into a wave shape, and the degree of deformation increases as the temperature rises; S6. The controller determines the temperature difference by monitoring the voltage of the thermoelectric block (5), and adjusts the current of the coil (8) accordingly, thereby controlling the flow speed and direction of the magnetic fluid, and realizing adaptive heat dissipation regulation.

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