Lightweight aluminum alloy heat dissipation strip with honeycomb hollow structure

Abstract

The utility model discloses a lightweight aluminum alloy heat dissipation strip with honeycomb openwork structure, including aluminum alloy baseplate, first honeycomb openwork heat dissipation mould cavity subassembly is seted up in the airflow direction in aluminum alloy baseplate, a plurality of aluminum alloy heat dissipation fins are set up on aluminum alloy baseplate at equal intervals, and the aluminum alloy baseplate and a plurality of aluminum alloy heat dissipation fins form heat dissipation strip surface heat dissipation air duct, second honeycomb openwork heat dissipation mould cavity subassembly is seted up in the airflow direction in aluminum alloy heat dissipation fin, the utility model is equipped with first honeycomb openwork heat dissipation mould cavity subassembly and second honeycomb openwork heat dissipation mould cavity subassembly, and the heat of aluminum alloy baseplate and aluminum alloy heat dissipation fin inside respectively passes first honeycomb openwork heat dissipation mould cavity subassembly and second honeycomb openwork heat dissipation mould cavity subassembly along the airflow direction and carries out circulation heat dissipation, carries out heat dissipation treatment to the heat of aluminum alloy heat dissipation strip body inside, carries out effective heat dissipation utilization to the solid structure inside heat dissipation strip, can effectively improve the heat dissipation effect.

Description

Technical Field

[0001] This utility model belongs to the technical field of aluminum alloy heat sinks, specifically relating to a lightweight aluminum alloy heat sink with a honeycomb hollow structure. Background Technology

[0002] As electronic devices develop towards high performance, miniaturization, and high integration, the heat generated per unit volume increases dramatically. Efficient heat dissipation has become the key to ensuring the stability and lifespan of equipment. Heat sinks (or heat dissipation fins) are the core components of air-cooled heat sinks, and their function is to accelerate heat dissipation by increasing the contact area with the air.

[0003] Currently, most common heat sinks are made of solid or simply bent aluminum profiles, which presents the following technical problems: 1. Large size and heavy weight: In order to increase the heat dissipation area, existing heat dissipation strips often need to increase the number or height of the heat dissipation strips, which leads to a significant increase in the overall weight of the heat sink, putting a burden on the installation structure and portability; 2. Low heat dissipation efficiency: The existing heat dissipation strips are solid structures, and mainly rely on the surface of the heat dissipation strips for heat exchange. They cannot effectively utilize the solid structure inside the heat dissipation strips, resulting in low heat dissipation efficiency. 3. High airflow resistance: The airflow channels formed by the existing densely arranged heat dissipation fins are narrow and straight, resulting in high airflow resistance, which in turn affects the heat dissipation effect; Therefore, we propose a lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure. Utility Model Content

[0004] The purpose of this invention is to provide a lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure, comprising an aluminum alloy heat sink body, wherein the aluminum alloy heat sink body comprises: An aluminum alloy substrate, wherein a first honeycomb hollow heat dissipation cavity assembly is provided in the airflow direction of the aluminum alloy substrate; A plurality of aluminum alloy heat dissipation fins are provided, and the plurality of aluminum alloy heat dissipation fins are equally spaced on the aluminum alloy substrate, and a heat dissipation channel is formed between the aluminum alloy substrate and the plurality of aluminum alloy heat dissipation fins on the surface of the heat dissipation strip. The aluminum alloy heat sink fins are provided with a second honeycomb hollow heat sink cavity assembly along the airflow direction.

[0006] Preferably, the first honeycomb hollow heat dissipation cavity assembly includes multiple honeycomb hollow heat dissipation cavities, cross heat dissipation channels, and airflow ports; The multi-honeycomb hollow heat dissipation cavity is provided in a plurality of them, and the plurality of multi-honeycomb hollow heat dissipation cavities are equally spaced inside the aluminum alloy substrate, and adjacent multi-honeycomb hollow heat dissipation cavities are connected by the cross heat dissipation channel; The airflow ports are provided in a plurality of manner, and the plurality of airflow ports are respectively disposed at the positions of the multi-honeycomb hollow heat dissipation cavity at both ends of the aluminum alloy substrate, and the airflow ports are connected to the multi-honeycomb hollow heat dissipation cavity.

[0007] Preferably, the multi-honeycomb hollow heat dissipation cavity is a hollow cavity in which multiple hexagonal, square or rhomboid structures are sequentially spliced ​​and connected.

[0008] Preferably, the common inner wall between adjacent multi-honeycomb perforated heat dissipation cavities forms a substrate support skeleton for supporting the interior of the aluminum alloy substrate.

[0009] Preferably, each of the substrate support frames has at least two cross heat dissipation channels that connect adjacent multi-cell hollow heat dissipation cavities.

[0010] Preferably, the second honeycomb hollow heat dissipation cavity assembly includes a single honeycomb hollow heat dissipation cavity and a straight heat dissipation channel; Each of the aluminum alloy heat sink fins has several equally spaced single-honeycomb hollow heat sink cavities, and each of the aluminum alloy heat sink fins has several straight heat sink channels that penetrate the single-honeycomb hollow heat sink cavities on its outer side.

[0011] Preferably, one end of the single honeycomb hollow heat dissipation cavity penetrates through the upper surface of the aluminum alloy heat dissipation fins.

[0012] Preferably, the single honeycomb hollow heat dissipation cavity is a single hexagonal, square, or rhomboid hollow cavity.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model is provided with a first honeycomb hollow heat dissipation cavity assembly and a second honeycomb hollow heat dissipation cavity assembly. When the aluminum alloy heat dissipation strip is used for heat dissipation, the heat is conducted to the aluminum alloy heat dissipation fins through the aluminum alloy substrate. Through airflow, the heat on the surface of the aluminum alloy substrate and the aluminum alloy heat dissipation fins is exchanged and dissipated through the heat dissipation air channels on the surface of the heat dissipation strip. At this time, the heat inside the aluminum alloy substrate and the aluminum alloy heat dissipation fins is dissipated through the first honeycomb hollow heat dissipation cavity assembly and the second honeycomb hollow heat dissipation cavity assembly along the airflow direction, respectively, to dissipate the heat inside the aluminum alloy heat dissipation strip body. The solid structure inside the heat dissipation strip is effectively utilized for heat dissipation, which can effectively improve the heat dissipation effect. The heat dissipation process of the first honeycomb hollow heat dissipation cavity assembly is as follows: According to the airflow direction, external air enters the multi-honeycomb hollow heat dissipation cavity through the airflow port at one end of the aluminum alloy substrate, and then flows through the multi-honeycomb hollow heat dissipation cavity sequentially along the airflow direction through the cross heat dissipation channel. Finally, it is discharged from the airflow port at the other end of the aluminum alloy substrate, realizing heat exchange and heat dissipation of the heat inside the aluminum alloy substrate. At the connection between the cross heat dissipation channel and the multi-honeycomb hollow heat dissipation cavity, the airflow is disturbed based on the cross heat dissipation channel structure, which breaks the air boundary layer, enhances turbulence, and thus achieves sufficient heat exchange, greatly improving the heat dissipation effect. The heat dissipation process of the second honeycomb hollow heat dissipation cavity assembly: According to the airflow direction, the external air enters the interior of the aluminum alloy heat dissipation fins through the straight heat dissipation channel on the outside of the aluminum alloy heat dissipation fins, and flows sequentially between the single honeycomb hollow heat dissipation cavities along the airflow direction, and is discharged from the other end, realizing heat exchange and heat dissipation of the heat inside the aluminum alloy heat dissipation fins, and improving the heat dissipation effect. 2. This utility model uses an aluminum alloy substrate and aluminum alloy heat dissipation fins to form the body of the aluminum alloy heat dissipation strip, and adopts a honeycomb hollow design to hollow out the inside of the aluminum alloy substrate and aluminum alloy heat dissipation fins, so as to achieve a lightweight structure without affecting the main structural function. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 3 This is a side sectional view of the present invention. Figure 4 This is a top sectional view of the present invention. Figure 5 This is a top sectional view of the present invention. Figure 6 This is a side view of the structure of this utility model.

[0015] In the figure: 1. Aluminum alloy heat sink body; 101. Aluminum alloy substrate; 102. Aluminum alloy heat sink fins; 103. Heat dissipation air channel on the surface of the heat sink; 104. Substrate support frame; 2. First honeycomb hollow heat dissipation cavity assembly; 201. Multi-honeycomb hollow heat dissipation cavity; 202. Cross heat dissipation channel; 203. Airflow port; 3. First honeycomb hollow heat dissipation cavity assembly; 301. Single honeycomb hollow heat dissipation cavity; 302. Straight heat dissipation channel. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-6 The lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure provided by this utility model includes an aluminum alloy heat sink body 1, which includes: An aluminum alloy substrate 101 has a first honeycomb perforated heat dissipation cavity assembly 2 formed inside it in the direction of airflow. The first honeycomb perforated heat dissipation cavity assembly 2 includes multiple honeycomb perforated heat dissipation cavities 201, cross heat dissipation channels 202, and airflow ports 203. Several multiple honeycomb perforated heat dissipation cavities 201 are provided and are evenly distributed inside the aluminum alloy substrate 101. Adjacent multiple honeycomb perforated heat dissipation cavities 201 are connected by cross heat dissipation channels 202. Several airflow ports 203 are provided and are respectively set at the positions of the multiple honeycomb perforated heat dissipation cavities 201 at both ends of the aluminum alloy substrate 101. The airflow ports 203 are connected to the multiple honeycomb perforated heat dissipation cavities 201. At least two cross heat dissipation channels 202 connecting adjacent multiple honeycomb perforated heat dissipation cavities 201 are formed on each substrate support frame 104. Aluminum alloy heat dissipation fins 102 are provided, and the aluminum alloy heat dissipation fins 102 are equally spaced on the aluminum alloy substrate 101, and a heat dissipation air channel 103 is formed between the aluminum alloy substrate 101 and the aluminum alloy heat dissipation fins 102. A second honeycomb hollow heat dissipation cavity assembly 3 is provided inside the aluminum alloy heat dissipation fin 102 along the airflow direction. The second honeycomb hollow heat dissipation cavity assembly 3 includes a single honeycomb hollow heat dissipation cavity 301 and a straight heat dissipation channel 302. Each aluminum alloy heat dissipation fin 102 has several equally spaced single honeycomb hollow heat dissipation cavities 301. Each aluminum alloy heat dissipation fin 102 has several straight heat dissipation channels 302 that penetrate the single honeycomb hollow heat dissipation cavity 301 on its outer side. One end of the single honeycomb hollow heat dissipation cavity 301 penetrates the upper end face of the aluminum alloy heat dissipation fin 102.

[0018] This utility model is provided with a first honeycomb hollow heat dissipation cavity assembly 2 and a second honeycomb hollow heat dissipation cavity assembly 3. When the aluminum alloy heat dissipation strip is used for heat dissipation, the heat is conducted to the aluminum alloy heat dissipation fins 102 through the aluminum alloy substrate 101. Through airflow, the heat on the surface of the aluminum alloy substrate 101 and the aluminum alloy heat dissipation fins 102 is exchanged and dissipated through the heat dissipation air duct 103 on the surface of the heat dissipation strip. At this time, the heat inside the aluminum alloy substrate 101 and the aluminum alloy heat dissipation fins 102 is dissipated through the first honeycomb hollow heat dissipation cavity assembly 2 and the second honeycomb hollow heat dissipation cavity assembly 3 along the airflow direction, respectively, to dissipate the heat inside the aluminum alloy heat dissipation strip body 1 and to effectively utilize the heat dissipation of the solid structure inside the heat dissipation strip, thereby effectively improving the heat dissipation effect. The heat dissipation process of the first honeycomb hollow heat dissipation cavity assembly 2 is as follows: According to the airflow direction, external air enters the multi-honeycomb hollow heat dissipation cavity 201 through the airflow port 203 at one end of the aluminum alloy substrate 101, and then flows through the cross heat dissipation channel 202 along the airflow direction between the multi-honeycomb hollow heat dissipation cavities 201. Finally, it is discharged from the airflow port 203 at the other end of the aluminum alloy substrate 101, realizing heat exchange and heat dissipation of the heat inside the aluminum alloy substrate 101. At the connection between the cross heat dissipation channel 202 and the multi-honeycomb hollow heat dissipation cavity 201, the airflow is disturbed based on the cross heat dissipation channel structure, which destroys the air boundary layer, enhances turbulence, and thus achieves sufficient heat exchange, greatly improving the heat dissipation effect. The second honeycomb hollow heat dissipation cavity assembly 3 heat dissipation process: According to the airflow direction, external air enters the interior of the aluminum alloy heat dissipation fin 102 through the straight heat dissipation channel 302 on the outside of the aluminum alloy heat dissipation fin 102, and flows sequentially between the single honeycomb hollow heat dissipation cavities 301 along the airflow direction, and is discharged from the other end, realizing heat exchange and heat dissipation of the heat inside the aluminum alloy heat dissipation fin 102, and improving the heat dissipation effect.

[0019] This utility model uses an aluminum alloy substrate 101 and aluminum alloy heat dissipation fins 102 to form the aluminum alloy heat dissipation strip body 1, and adopts a honeycomb hollow design to hollow out the interior of the aluminum alloy substrate 101 and aluminum alloy heat dissipation fins 102, so as to achieve a lightweight structure without affecting the main structural functions.

[0020] In this embodiment, the multi-honeycomb hollow heat dissipation cavity 201 is a hollow cavity in which multiple hexagonal, square or rhomboid structures are sequentially spliced ​​and connected. It is preferably a regular hexagon, which has a longer perimeter and optimal structural stability under the same area.

[0021] In this embodiment, as Figure 1 As shown, the common inner wall between adjacent multi-honeycomb hollow heat dissipation cavities 201 forms a substrate support skeleton 104 for supporting the interior of the aluminum alloy substrate 101, thereby improving the structural strength of the aluminum alloy heat dissipation strip.

[0022] In this embodiment, the single-honeycomb hollow heat dissipation cavity 301 is a single hexagonal, square or rhomboid hollow cavity, preferably a regular hexagon, which has a longer perimeter and optimal structural stability for the same area.

[0023] In summary, the heat dissipation method of the lightweight aluminum alloy heat sink with honeycomb hollow structure provided in this embodiment is as follows: When the aluminum alloy heat sink is used for heat dissipation, heat is conducted to the aluminum alloy heat sink fins 102 through the aluminum alloy substrate 101. Through airflow, the heat on the surface of the aluminum alloy substrate 101 and the aluminum alloy heat sink fins 102 is exchanged and dissipated through the heat dissipation channel 103 on the surface of the heat sink. At this time, the heat inside the aluminum alloy substrate 101 and the aluminum alloy heat sink fins 102 is dissipated through the first honeycomb hollow heat dissipation cavity assembly 2 and the second honeycomb hollow heat dissipation cavity assembly 3 along the airflow direction, respectively, to dissipate the heat inside the aluminum alloy heat sink body 1. The solid structure inside the heat sink is effectively utilized for heat dissipation, which can effectively improve the heat dissipation effect. The heat dissipation process of the first honeycomb hollow heat dissipation cavity assembly 2 is as follows: According to the airflow direction, external air enters the multi-honeycomb hollow heat dissipation cavity 201 through the airflow port 203 at one end of the aluminum alloy substrate 101, and then flows through the cross heat dissipation channel 202 along the airflow direction between the multi-honeycomb hollow heat dissipation cavities 201. Finally, it is discharged from the airflow port 203 at the other end of the aluminum alloy substrate 101, realizing heat exchange and heat dissipation of the heat inside the aluminum alloy substrate 101. At the connection between the cross heat dissipation channel 202 and the multi-honeycomb hollow heat dissipation cavity 201, the airflow is disturbed based on the cross heat dissipation channel structure, which destroys the air boundary layer, enhances turbulence, and thus achieves sufficient heat exchange, greatly improving the heat dissipation effect. The second honeycomb hollow heat dissipation cavity assembly 3 heat dissipation process: According to the airflow direction, external air enters the interior of the aluminum alloy heat dissipation fin 102 through the straight heat dissipation channel 302 on the outside of the aluminum alloy heat dissipation fin 102, and flows sequentially between the single honeycomb hollow heat dissipation cavities 301 along the airflow direction, and is discharged from the other end, realizing heat exchange and heat dissipation of the heat inside the aluminum alloy heat dissipation fin 102, and improving the heat dissipation effect.

[0024] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lightweight aluminum alloy heat sink with a honeycomb-shaped perforated structure, characterized in that, Includes an aluminum alloy heat sink body (1), the aluminum alloy heat sink body (1) comprising: An aluminum alloy substrate (101) has a first honeycomb hollow heat dissipation cavity assembly (2) formed in the airflow direction within the aluminum alloy substrate (101). Aluminum alloy heat dissipation fins (102) are provided in a plurality of them. The plurality of aluminum alloy heat dissipation fins (102) are equally spaced on the aluminum alloy substrate (101). A heat dissipation channel (103) is formed between the aluminum alloy substrate (101) and the plurality of aluminum alloy heat dissipation fins (102). The aluminum alloy heat dissipation fins (102) have a second honeycomb hollow heat dissipation cavity assembly (3) formed inside along the airflow direction.

2. The lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure according to claim 1, characterized in that: The first honeycomb hollow heat dissipation cavity assembly (2) includes a multi-honeycomb hollow heat dissipation cavity (201), a cross heat dissipation channel (202), and an airflow port (203). The multi-honeycomb hollow heat dissipation cavity (201) is provided in a plurality of such cavities. The plurality of multi-honeycomb hollow heat dissipation cavities (201) are distributed at equal intervals inside the aluminum alloy substrate (101), and adjacent multi-honeycomb hollow heat dissipation cavities (201) are connected by the cross heat dissipation channel (202). The airflow ports (203) are provided in a plurality of positions, and the plurality of airflow ports (203) are respectively located at the positions of the multi-honeycomb hollow heat dissipation cavity (201) at both ends of the aluminum alloy substrate (101), and the airflow ports (203) and the multi-honeycomb hollow heat dissipation cavity (201) are connected.

3. A lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure according to claim 2, characterized in that: The multi-honeycomb hollow heat dissipation cavity (201) is a hollow cavity in which multiple hexagonal, square or rhomboid structures are sequentially spliced ​​and connected.

4. A lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure according to claim 2, characterized in that: The common inner wall between adjacent multi-honeycomb hollow heat dissipation cavities (201) forms a substrate support frame (104) for supporting the interior of the aluminum alloy substrate (101).

5. A lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure according to claim 4, characterized in that: Each of the substrate support frames (104) has at least two cross heat dissipation channels (202) that connect adjacent multi-cell hollow heat dissipation cavities (201).

6. A lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure according to claim 1, characterized in that: The second honeycomb hollow heat dissipation cavity assembly (3) includes a single honeycomb hollow heat dissipation cavity (301) and a straight heat dissipation channel (302). Each of the aluminum alloy heat dissipation fins (102) has a plurality of equally spaced single honeycomb hollow heat dissipation cavities (301), and each of the aluminum alloy heat dissipation fins (102) has a plurality of straight heat dissipation channels (302) that penetrate the single honeycomb hollow heat dissipation cavities (301) on its outer side.

7. A lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure according to claim 6, characterized in that: One end of the single-honeycomb hollow heat dissipation cavity (301) penetrates the upper surface of the aluminum alloy heat dissipation fin (102).

8. A lightweight aluminum alloy heat sink with a honeycomb-shaped hollow structure according to claim 7, characterized in that: The single-honeycomb hollow heat dissipation cavity (301) is a single hexagonal, square or rhomboid hollow cavity.

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