Aluminum-copper composite phase change heat dissipation device

Abstract

The utility model relates to the technical field of heat dissipation devices, in particular to an aluminum-copper composite phase change heat dissipation device, which comprises a heat dissipation main body structure, a first heat dissipation mode component and a second heat dissipation mode component, the heat dissipation main body structure comprises a heat dissipation substrate, one side of the heat dissipation substrate is provided with a heat dissipation unit used for increasing the heat dissipation area, and the heat dissipation unit is provided with a first heat dissipation mode component and a second heat dissipation mode component. The heat dissipation substrate is internally provided with a microgroove, a capillary tube is fixed in the microgroove, the first heat dissipation mode part comprises an air blowing part matched with a heat dissipation main body structure, and the second heat dissipation mode part comprises an external liquid circulation system and an auxiliary heat dissipation assembly. Flexible switching can be carried out according to equipment operation conditions and heat dissipation requirements, a standard air cooling mode is adopted in low load, the structure is simple, and energy consumption is low; and when the load is high, a liquid cooling and evaporative cooling combined strengthening mode is started, stable operation of equipment is ensured, and the applicability and the energy utilization efficiency of the heat dissipation device are improved.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation device technology, and in particular to an aluminum-copper composite phase change heat dissipation device. Background Technology

[0002] In many fields such as electronic devices and industrial production, with the rapid development of technology, the integration and performance of equipment are constantly improving. This has led to increasingly serious heat dissipation problems. Effective heat dissipation is crucial for ensuring stable operation of equipment, extending its service life, and improving its performance.

[0003] In some scenarios, a compressed air cooling system with an air compressor as its core is used. The air compressor generates high-pressure gas, which is then transported to the cooling terminal through pipelines. The forced convection of the compressed air removes the heat from the equipment. However, the air compressor cooling system needs to integrate the air compressor main unit, air tank, dryer, precision filter and complex pipeline network. It is large in size and weight, and has high energy consumption, making it inconvenient to use.

[0004] Based on the above situation, it is necessary to design an aluminum-copper composite phase change heat dissipation device to solve the above problems. Utility Model Content

[0005] This invention provides an aluminum-copper composite phase change heat dissipation device to solve the problems existing in the prior art.

[0006] The technical problem solved by this utility model is achieved by the following technical solution:

[0007] An aluminum-copper composite phase change heat dissipation device includes a main heat dissipation structure, a first heat dissipation mode component, and a second heat dissipation mode component. The main heat dissipation structure includes a heat dissipation substrate, with a heat dissipation unit on one side to increase the heat dissipation area. Microgrooves are provided within the heat dissipation substrate, and capillary tubes are fixed within the microgrooves to form a heat-conducting network. The first heat dissipation mode component includes a blower component that cooperates with the main heat dissipation structure. The second heat dissipation mode component includes an external liquid circulation system and an auxiliary heat dissipation assembly. The external liquid circulation system includes a circulation pump, a liquid reservoir, and an evaporator connected sequentially via pipes. The auxiliary heat dissipation assembly includes a centrifugal fan for generating airflow, a spiral duct, and an atomizing component for generating an atomization effect. The atomizing component is located inside the spiral duct. The centrifugal fan is connected to the spiral duct, and the outlet of the spiral duct corresponds to the evaporator. The atomized material generated by the atomizing component is passed through the centrifugal fan to form a two-phase flow of gas and mist, thereby enhancing the heat dissipation effect of the evaporator and the main heat dissipation structure.

[0008] Preferably, the heat dissipation substrate and the capillary are connected by seamless thermal conductivity technology.

[0009] Preferably, the heat dissipation unit is an array of heat dissipation fins.

[0010] Preferably, the quick-connect structure is a quick-connect connector.

[0011] Preferably, the spiral duct is provided with a turbulence structure inside to enhance gas-liquid mixing.

[0012] Preferably, the atomizing component is a piezoelectric ultrasonic atomizer.

[0013] The beneficial effects of this utility model are as follows: Through the combination of the heat dissipation substrate and the capillary tube, rapid heat conduction is achieved; the combination of the heat dissipation unit and the blower component accelerates air convection for standard heat dissipation; in the enhanced heat dissipation mode, a large amount of heat is removed through liquid cooling circulation, which works in conjunction with evaporative cooling to achieve enhanced heat dissipation and improve overall heat dissipation efficiency. Two heat dissipation modes are achieved through different component combinations, which can be flexibly switched according to the equipment's operating conditions and heat dissipation requirements. Under low load, the standard air-cooling mode is used, which is simple in structure and has low energy consumption; under high load, the enhanced mode combining liquid cooling and evaporative cooling is activated to ensure stable equipment operation and improve the applicability and energy utilization efficiency of the heat dissipation device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram showing the positional relationship between the blower component and the main heat dissipation structure in this utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure between the capillary tube and the heat dissipation substrate in this utility model;

[0017] Figure 3 This is a schematic diagram of the installation structure of the heat dissipation unit in this utility model;

[0018] Figure 4 This is a schematic diagram showing the installation position of the quick-connect structure in this utility model;

[0019] Figure 5 This is a schematic diagram of the auxiliary heat dissipation component in this utility model;

[0020] Figure 6 This is a cross-sectional schematic diagram of the spiral duct in this utility model;

[0021] Figure 7 A schematic diagram of the quick-connect structure provided by this utility model;

[0022] Figure 8 This is a flowchart of the external liquid circulation system provided in this utility model.

[0023] In the figure, 1. Main heat dissipation structure; 11. Heat dissipation base plate; 12. Heat dissipation unit; 13. Microgroove; 14. Capillary tube; 15. Heat conduction pipe network; 2. Quick connection structure; 3. Circulation pump; 31. Liquid reservoir; 32. Evaporator; 4. Centrifugal fan; 41. Spiral air duct; 42. Atomizing component; 5. Blower component. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0025] Reference Figures 1-8 As shown, the aluminum-copper composite phase change heat dissipation device includes a heat dissipation main structure 1, a first heat dissipation mode component, and a second heat dissipation mode component. The heat dissipation main structure 1 includes a heat dissipation substrate 11. A heat dissipation unit 12 for increasing the heat dissipation area is provided on one side of the heat dissipation substrate 11. Microgrooves 13 are provided inside the heat dissipation substrate 11, and capillary tubes 14 are fixed in the microgrooves 13. The heat dissipation substrate 11 can be made of aluminum-copper composite material. The aluminum-copper composite design combines the advantages of aluminum's light weight and low cost with copper's high thermal conductivity, which reduces the weight of the device while ensuring efficient heat conduction. The substrate has microgrooves 13 precisely machined inside, and capillary tubes 14 are embedded in the grooves and interconnected. The capillary tubes 14 are made of copper and use their capillary action to achieve self-circulation of the working fluid. The heat dissipation substrate 11 and the capillary tubes 14 are connected by seamless thermal conduction technology, such as brazing, to ensure sealing, achieve efficient and stable heat transfer, reduce thermal resistance, improve heat dissipation efficiency, and provide a stable channel for phase change heat dissipation.

[0026] The first heat dissipation mode component includes a blower component 5 that works in conjunction with the heat dissipation main structure 1. The blower component 5 can be a blower, axial flow fan or other device, and forms a corresponding positional relationship with the heat dissipation unit 12. When working, the blower component 5 forces air to flow across the surface of the heat dissipation unit 12, accelerating the heat exchange between the air and the heat dissipation unit 12. It is suitable for conventional heat dissipation needs and can quickly remove heat from the substrate surface and reduce the operating temperature of the equipment.

[0027] The second heat dissipation mode component includes an external liquid circulation system and an auxiliary heat dissipation assembly, which are quickly connected via a quick-connect structure 2. The external liquid circulation system includes a circulation pump 3, a liquid reservoir 31, and an evaporator 32 connected in sequence via pipes. The auxiliary heat dissipation assembly includes a centrifugal fan 4 for generating airflow, a spiral duct 41, and an atomizing component 42 for generating an atomization effect. The atomizing component 42 is located inside the spiral duct 41. The centrifugal fan 4 is connected to the spiral duct 41, and the air outlet of the spiral duct 41 corresponds to the evaporator 32. This atomization component 42 is used to form a two-phase flow of air and mist through the centrifugal fan 4, thereby enhancing the heat dissipation effect of the evaporator 32 and the main heat dissipation structure 1. The circulation pump 3 provides power to drive the coolant to circulate between the pipes, the liquid reservoir 31, and the evaporator 32. The liquid reservoir 31 is used to store coolant and maintain the system. The liquid level is stable. The evaporator 32 adopts an aluminum fin structure with microchannels on its surface to increase the contact area between the coolant and the air, accelerating heat dissipation. The auxiliary heat dissipation components consist of a centrifugal fan 4, a spiral duct 41, and an atomizing component 42. The centrifugal fan 4 generates a high-speed airflow, which is introduced into the spiral duct 41 through a pipe. The spiral duct 41 adopts a spiral inner wall design to guide the airflow to form a rotating motion. The atomizing component 42 is located in the middle of the spiral duct 41, which disperses the liquid into micron-sized droplets. Under the action of the centrifugal fan 4, the droplets and the airflow mix to form a two-phase flow of gas and mist, which is sprayed onto the surface of the evaporator 32 through the air outlet of the spiral duct 41. The atomized material evaporates and absorbs heat on the surface of the evaporator 32. At the same time, the airflow accelerates the evaporation of droplets and heat transfer, significantly enhancing the heat dissipation efficiency of the evaporator 32. Some of the two-phase flow of gas and mist continues to flow to the main heat dissipation structure 1, further improving the overall heat dissipation effect.

[0028] When the load is low or the ambient temperature is low, only the blower component 5 is activated, and the fan forces the air to flow. Heat is transferred to the air through convection heat transfer on the surface of the heat dissipation unit 12 to achieve basic heat dissipation and perform the standard heat dissipation mode. When the equipment load increases or the ambient temperature is high, the capillary tube 14 is connected to the auxiliary heat dissipation component for auxiliary heat dissipation, and the heat is released through the evaporator 32. At the same time, the two-phase flow of air mist generated by the auxiliary heat dissipation component accelerates the heat dissipation of the evaporator 32 and performs the enhanced heat dissipation mode.

[0029] Furthermore, the quick-connect structure 2 is a quick-connect coupling, which can be a bidirectional self-sealing quick-connect coupling, allowing for quick connection or disconnection with an external liquid circulation system, such as... Figure 7 As shown, the quick-connect coupling can achieve a quick-sealing connection by using the threaded cap 21 and the threaded engagement of the connector 22 to compress the sealing ring 23, ensuring no leakage between liquid circulation systems.

[0030] Reference Figures 1-5As shown, the heat dissipation unit 12 is an array of heat dissipation fins. The array of heat dissipation fins are distributed on the heat dissipation substrate 11 in a regular arrangement. By increasing the heat dissipation area, the heat exchange efficiency with the surrounding air is enhanced. The array layout makes the fins form uniform channels, which is conducive to air flow. When the air flows through these channels, it will fully contact the fin surface, thereby taking away more heat.

[0031] Reference Figure 6 As shown, the spiral duct 41 is further provided with a turbulence structure inside to enhance gas-liquid mixing. The turbulence structure can be turbulence blades arranged along the spiral direction of the spiral duct 41. After the airflow generated by the centrifugal fan 4 carries the mist droplets generated by the atomizing component 42 into the spiral duct 41, the turbulence blades will forcibly change the airflow direction, causing the gas-liquid mixture to rotate. Under the dual action of centrifugal force and airflow, the mist droplets collide and merge with the surface of the turbulence blades and other mist droplets, accelerating the gas-liquid mixing process.

[0032] Furthermore, the atomizing component 42 is a piezoelectric ultrasonic atomizer. The droplets generated by the piezoelectric ultrasonic atomizer have extremely small particle sizes, with an average particle size controllable within the range of 5-15μm. When evaporating on the surface of the evaporator 32, they can quickly absorb a large amount of heat, significantly improving the heat dissipation efficiency of the evaporator 32. At the same time, under the action of the centrifugal fan 4, the extremely small droplets can be fully mixed with the airflow to form a uniform gas-mist two-phase flow, ensuring the uniform distribution of droplets on the spiral duct 41 and the surface of the evaporator 32, and avoiding local liquid accumulation or droplet deposition.

Claims

1. An aluminum-copper composite phase change heat dissipation device, characterized in that, include; The heat dissipation main structure (1) includes a heat dissipation substrate (11), a heat dissipation unit (12) for increasing the heat dissipation area is provided on one side of the heat dissipation substrate (11), a micro groove (13) is provided in the heat dissipation substrate (11), and a capillary tube (14) is fixed in the micro groove (13). The first heat dissipation mode component includes a blower component (5) that cooperates with the heat dissipation main structure (1). The second heat dissipation mode component includes an external liquid circulation system and an auxiliary heat dissipation component. The external liquid circulation system includes a circulation pump (3), a liquid reservoir (31), and an evaporator (32) connected in sequence through pipes. The auxiliary heat dissipation component includes a centrifugal fan (4) for generating airflow, a spiral duct (41), and an atomizing component (42) for generating atomization effect. The atomizing component (42) is located inside the spiral duct (41). The centrifugal fan (4) is connected to the spiral duct (41). The air outlet of the spiral duct (41) corresponds to the evaporator (32). The atomized material generated by the atomizing component (42) is formed into a two-phase flow of gas and mist by the centrifugal fan (4), which is used to enhance the heat dissipation effect of the evaporator (32) and the heat dissipation main structure (1).

2. The aluminum-copper composite phase change heat dissipation device according to claim 1, characterized in that, The heat dissipation substrate (11) and the capillary tube (14) are connected by seamless heat conduction technology.

3. The aluminum-copper composite phase change heat dissipation device according to claim 1, characterized in that, The heat dissipation unit (12) is an array of heat dissipation fins.

4. The aluminum-copper composite phase change heat dissipation device according to claim 1, characterized in that, The spiral duct (41) is equipped with a turbulence structure inside to enhance gas-liquid mixing.

5. The aluminum-copper composite phase change heat dissipation device according to claim 1, characterized in that, The atomizing component (42) is a piezoelectric ultrasonic atomizer.

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