Efficient air cooling radiator

Abstract

The utility model discloses a high-efficiency air-cooled radiator, which is provided with a radiating plate and a plurality of fins arranged at the bottom of the radiating plate, the plurality of fins are distributed in parallel along the length direction of the radiating plate to form a radiating fin group, and a fan is arranged at the bottom of the radiating plate along the direction of the fins; air guide windows are formed in the heat dissipation plate in a penetrating mode and distributed between the draught fan and the fins, and beveled corners are arranged on the sides, facing the heating devices, of the tops of the air guide windows. Air flow generated by the fan passes through the air guide window and then forms turbulent flow to be blown to the heating device. According to the utility model, the air guide window is arranged on the heat dissipation plate, air flow can be directly blown to a heating device from the air guide window, secondary heat conduction of the heat dissipation plate is reduced, the air flow is in a turbulent flow shape, air molecules move irregularly, and heat exchange is sufficient, so that heat exchange is greatly enhanced, rapid heat transfer can be better realized, and the service life of the heat dissipation plate is prolonged. Therefore, the heat dissipation effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiators, in particular to a high-efficiency air-cooling radiator. Background Art

[0002] Typically, when a circuit board is operating, power devices generate heat as they work. The greater the power, the greater the heat generated. Due to material limitations, power devices cannot dissipate heat on their own and must be closely fitted with excellent thermal conductors to transfer heat away, dissipating it through conduction. To improve heat dissipation efficiency by nearly half, aluminum alloy heat sinks are equipped with toothed fins to increase the heat dissipation area. Fans then forcefully remove heat, effectively cooling the heating device.

[0003] The current radiator fins dissipate heat in the direction of the wind field, that is, the fins are parallel to the wind field. The heat conducted from the power devices above the radiator is dispersed through multiple fins and taken out by the fan. Ideally, the wind passing through the fins is unobstructed and acts directly on the surface of the radiator fins, forming a laminar effect. The laminar airflow is evenly distributed, with only two pairs of sliding between adjacent layers of fluid. There is no lateral mixing between the flow layers, the flow is more orderly, and the particles are not mixed with each other. Under microscopic conditions, there is not much contact between the molecules in the air and the heat sink. The more intermolecular movement, the more contact and collisions there are, the more sufficient the heat exchange is. Therefore, under laminar conditions, the flow is stable and orderly, resulting in slower heat transfer. In view of the above situation, the present application proposes an efficient air-cooled radiator. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned prior art, the utility model provides a high-efficiency air-cooled radiator.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an efficient air-cooled radiator, comprising a heat sink and a plurality of fins arranged at the bottom of the heat sink, wherein the plurality of fins are arranged parallel to each other along the length of the heat sink to form a heat sink fin group, and a fan is installed at the bottom of the heat sink along the direction of the fins;

[0006] An air guide window is provided through the heat dissipation plate, the air guide window is distributed between the fan and the fins, and the top of the air guide window has a beveled angle on the side facing the heating element;

[0007] The airflow generated by the fan forms turbulent flow after passing through the air guide window and blows toward the heating device.

[0008] Preferably, a flow-guiding structure is arranged between every two adjacent fins, and the wind generated by the fan forms turbulent flow through the flow-guiding structure.

[0009] Preferably, the guide structure includes a plurality of first guide blocks and second guide blocks of the same specifications, wherein:

[0010] Two first guide blocks and one second guide block are distributed in a triangle to form a unit fixed on the fin;

[0011] Multiple units are evenly arranged along the length of the fin.

[0012] Preferably, the first guide block and the second guide block both have a triangular structure.

[0013] Preferably, an air collecting hood is provided on the side of the fin facing away from the fan, the open end of the air collecting hood faces the fin, and the closed end is fixedly connected to a connecting pipe, which extends upward in the vertical direction to the top of the heat sink and is connected to an air outlet hood, which faces the heating device.

[0014] Preferably, the connecting pipe is fixedly connected to the end of the heat dissipation plate through a fixing block.

[0015] Preferably, the open end of the air collecting cover is arranged at the middle and lower part of the fin.

[0016] Preferably, partitions are fixed at both ends of the heating element, the top of the partition extends to contact the circuit board, and the bottom is fixedly connected to the heat dissipation plate.

[0017] Compared with the prior art, the present invention provides a highly efficient air-cooled radiator with the following beneficial effects:

[0018] (1) The utility model divides the wind field of the heat sink into two parts by opening an air guide window on the heat sink. One part of the wind blows directly onto the heating device from the air guide window, thereby reducing the secondary heat conduction of the heat sink. In addition, the airflow above the air guide window is turbulent, and the fluid particles in each layer are mixed violently. After being blocked by the heating device and the circuit board, the air molecules enter a chaotic state. The air molecules frequently contact the heat sink, the heating device, and the circuit board, and are mixed violently. The molecules exhibit irregular motion, and the heat exchange is sufficient, which greatly enhances the heat exchange and can better achieve rapid heat transfer, thereby improving the heat dissipation effect.

[0019] (2) The present application also arranges a guide structure between each two adjacent fins, which disturbs the incoming airflow so that the airflow can also form an irregular flow when passing through the fins, and the airflow and the fins are fully in contact to complete the heat exchange.

[0020] (3) The air collecting hood at the end of the fin can reuse the airflow, avoiding energy waste and realizing energy saving of the radiator. The airflow passing through the bottom of the fin directly enters the air collecting hood, and then blows out from the air outlet hood to the heating device, thereby directly exchanging heat with the heating device for the second time. The heating device is affected by two airflows, further improving the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 Schematic diagram of the structure of the entire radiator in Example 1;

[0023] Figure 2 This is a bottom view of the structure of the radiator proposed in Example 1;

[0024] Figure 3 This is a schematic structural diagram of the entire fin group provided at the bottom of the heat sink in Example 1;

[0025] Figure 4 Schematic diagram of the distribution of guide blocks on a single fin in Example 1;

[0026] Figure 5 A schematic structural diagram of the heat sink proposed in the second embodiment at a first angle;

[0027] Figure 6 This is a structural diagram of the heat sink proposed in the second embodiment from another angle.

[0028] In the figure: 1. heat sink; 2. fins; 3. fan; 4. air guide window; 5. heating element; 6. circuit board; 7. air guide structure; 71. first air guide block; 72. second air guide block; 8. partition; 9. air collecting cover; 10. connecting pipe; 11. fixing block; 12. air outlet cover. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] This embodiment proposes an efficient air-cooled radiator, such as Figures 1 to 4The fins 2 are arranged at the bottom of the heat sink 1, and the fins 2 are arranged in parallel along the length direction of the heat sink 1 to form a heat fin group. A circuit board 6 is fixed on the top of the heat sink 1 by a bracket. The bottom of the heating device 5 on the circuit board 6 is tightly fitted with the upper end of the heat sink 1. When the circuit board 6 is working, the heating device 5 generates heat when working. The heat sink 1 can conduct the heat from the heating device 5 to its interior. The heat sink 1 as a whole acts as a heat storage device, storing all the heat inside itself. Through contact with the air, the heat is slowly dissipated to complete natural heat dissipation. The fins 2 arranged at the bottom of the heat sink 1 can increase the heat dissipation area of ​​the heat sink 1, thereby ensuring the heat dissipation efficiency of the heat sink 1. When forced heat dissipation is required, a fan 3 is installed at the bottom of the heat sink 1 along the direction of the fins 2. In this embodiment, two fans 3 are installed in parallel. The wind flow generated by the fan 3 passes through the entire heat dissipation fin group, thereby taking away the heat inside the heat sink 1.

[0032] The airflow generated by fan 3 acts directly on the surfaces of the multiple fins 2. Because the fins 2 are arranged in parallel, the airflow encounters no obstacles, resulting in laminar flow. Laminar airflow is evenly distributed, with only two pairs of sliding motions between adjacent layers. There is no lateral mixing between the flow layers, resulting in a more orderly flow and no mixing of particles. Therefore, under laminar flow conditions, the flow rate is stable and orderly, resulting in slower heat transfer. To address this phenomenon, this embodiment chooses to open two air guide windows 4 through the heat sink 1. The two air guide windows 4 are distributed between the fan 3 and the fins 2, and the top of the air guide window 4 has a bevel angle facing the heating device 5. Part of the airflow generated by the fan 3 enters the heat dissipation fin group, and the other part enters the area between the heat sink 1 and the circuit board 6 through the air guide window 4. In this way, the wind field of the heat sink 1 is divided into two parts, consisting of laminar flow at the bottom and turbulent flow at the top. The airflow generated by the fan 3 no longer flows along the original parallel trajectory. Part of the wind blows directly from the air guide window 4 to the heating device 5, reducing the secondary heat conduction of the heat sink 1. The heating device 5 directly benefits during forced convection heat exchange. Moreover, during turbulent flow, the fluid particles in each layer are mixed violently. After being blocked by the heating device 5 and the circuit board 6, the air molecules enter a chaotic state. The air molecules frequently contact the heat sink 1, the heating device 5, and the circuit board 6, and are mixed violently. The molecules show irregular motion, and heat exchange is sufficient, which greatly enhances the heat exchange and can better realize the rapid transfer of heat, thereby improving the heat dissipation effect.

[0033] Furthermore, in this embodiment, laminar flow is formed below the heat sink 1, and the airflow has a poor heat dissipation effect on the fins 2 when passing through them. In order to improve the heat dissipation effect of the fins 2, this embodiment also provides a guide structure 7 between each two adjacent fins 2. The guide structure 7 disturbs the incoming airflow, so that the airflow can also form an irregular flow when passing through the fins 2, thereby achieving sufficient heat exchange. The guide structure 7 includes a plurality of first guide blocks 71 and second guide blocks 72 of the same specifications, wherein the two first guide blocks 71 and the second guide block 72 are distributed in a triangular shape to form a unit fixed on the fins 2. The multiple units are evenly arranged along the length direction of the fins 2, and the first guide blocks 71 and the second guide blocks 72 are triangular in structure. After the airflow enters the interior of the fins 2, its motion trajectory is continuously changed under the action of the first guide blocks 71 and the second guide blocks 72, so that the airflow and the fins 2 are fully in contact and complete heat exchange.

[0034] Example 2

[0035] This embodiment adopts the same inventive concept as the first embodiment, the difference being that there is no guide structure 7 inside the fin 2 in this embodiment. After the airflow enters the inside of the fin 2, a laminar flow effect is formed, and the airflow passes through the fin 2 at a relatively fast speed, which will result in the airflow being unable to fully exchange heat with the fin 2, resulting in energy waste. In addition, after the heat inside the heat sink 1 is conducted to the inside of the fin 2, the heat will also be conducted from top to bottom inside the fin 2, but the airflow continuously passes through the fin 2 for heat exchange, and the heat inside the fin 2 is carried away by the airflow before it has time to be conducted to its bottom. This will cause a heat difference in the vertical direction of the fin 2, that is, the heat is higher at the position of the fin 2 close to the heat sink 1, and the heat is lower near its bottom. The airflow passing through the bottom of the fin 2 is not fully utilized, which will also result in energy waste.

[0036] In view of the above situation, this embodiment is provided with an air collecting hood 9 at the end of the fin 2. The open end of the air collecting hood 9 faces the fin 2 and is located in the middle and lower part of the fin 2. The closed end is fixedly connected to a connecting pipe 10. The connecting pipe 10 extends upward in the vertical direction to the top of the heat sink 1 and is connected to the air outlet hood 12. The connecting pipe 10 is fixed to the heat sink 1 through a fixing block 11. The airflow passing through the bottom of the fin 2 directly enters the air collecting hood 9, and then blows out from the air outlet hood 12 to the heating element 5, so that the airflow is reused to directly exchange heat with the heating element 5. Since the airflow passing through the air guide window 4 directly acts on one side of the heating element 5, it cannot completely contact the heating element 5. In this embodiment, the air outlet hood 12 is rotated to distribute it on the other side of the heating element 5. The airflow passing through the air guide window 4 and the secondary utilized airflow can cooperate to perform direct air cooling and heat exchange on both sides of the heating element 5, thereby further improving the heat dissipation efficiency of the heating element 5.

[0037] In addition, since both sides of the heating device 5 receive two airflows at the same time, in order to avoid the two airflows affecting each other, the present application also fixes a partition 8 at both ends of the heating device 5 to isolate the two airflows through the partition 8 and the heating device 5 itself.

[0038] In the description of this utility model, the terms "first," "second," "another," and "yet another" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of this utility model, "plurality" means two or more, unless otherwise specifically specified.

[0039] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances. In addition, in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0040] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-efficiency air-cooled radiator, comprising a heat dissipation plate (1) and a plurality of fins (2) arranged at the bottom of the heat dissipation plate (1), wherein the plurality of fins (2) are arranged parallel to each other along the length direction of the heat dissipation plate (1) to form a heat dissipation fin group, characterized in that: A fan (3) is installed at the bottom of the heat dissipation plate (1) along the direction of the fins (2); An air guide window (4) is provided through the heat dissipation plate (1), the air guide window (4) is distributed between the fan (3) and the fin (2), and the top of the air guide window (4) has a beveled angle on the side facing the heating element (5); The airflow generated by the fan (3) passes through the air guide window (4) to form a turbulent flow and blows toward the heating device (5).

2. The high-efficiency air-cooled radiator according to claim 1, characterized in that: A flow guide structure (7) is arranged between each two adjacent fins (2), and the wind flow generated by the fan (3) forms a turbulent flow through the flow guide structure (7).

3. The high-efficiency air-cooled radiator according to claim 2, characterized in that: The flow guide structure (7) comprises a plurality of first flow guide blocks (71) and second flow guide blocks (72) of the same specifications, wherein: Two first guide blocks (71) and one second guide block (72) are distributed in a triangular shape to form a unit fixed on the fin (2); The multiple units are evenly arranged along the length direction of the fin (2).

4. The high-efficiency air-cooled radiator according to claim 3, characterized in that: The first guide block (71) and the second guide block (72) both have a triangular structure.

5. The high-efficiency air-cooled radiator according to claim 1, characterized in that: An air collecting cover (9) is provided on the side of the fin (2) facing away from the fan (3); the open end of the air collecting cover (9) faces the fin (2); the closed end is fixedly connected to a connecting pipe (10); the connecting pipe (10) extends upward in a vertical direction to the top of the heat dissipation plate (1) and is then connected to an air outlet cover (12); the air outlet cover (12) faces the heating device (5).

6. The high-efficiency air-cooled radiator according to claim 5, characterized in that: The connecting pipe (10) is fixedly connected to the end of the heat dissipation plate (1) through a fixing block (11).

7. The high-efficiency air-cooled radiator according to claim 5, characterized in that: The open end of the wind collecting cover (9) is arranged at the middle and lower part of the fin (2).

8. The high-efficiency air-cooled radiator according to claim 5, characterized in that: Partitions (8) are fixed at both ends of the heating element (5); the top of the partition (8) extends to contact the circuit board (6), and the bottom is fixedly connected to the heat dissipation plate (1).

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