Heat dissipation strip

Abstract

The utility model discloses a heat radiation strip, comprising a substrate, two sides of the substrate are fixedly connected with a first heat conduction pleat and a second heat conduction pleat, one side of the first heat conduction pleat and one side of the second heat conduction pleat, which are far away from the substrate, are fixedly connected with a packaging plate, end portions of two ends of the two packaging plates are both provided with packaging wrapping edges, the middle of one end of the substrate is fixedly connected with a power connection plate, and the first heat conduction pleat and the second heat conduction pleat are both provided with a plurality of pleat plates. According to the utility model, the first heat conduction pleat and the second heat conduction pleat are symmetrically designed through the turbulent flow windows of the adjacent blades, and the window opening directions of the turbulent flow windows of the first heat conduction pleat and the second heat conduction pleat are opposite, so that a turbulent flow channel formed by the first heat conduction pleat and the second heat conduction pleat generates more disturbance directions; and more micro cyclones are generated by the internal air flow, so that more air can be in contact with the heat dissipation strips, and the heat dissipation efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation strip technology, and in particular to a heat dissipation strip. Background Technology

[0002] For PTC air heaters, heat dissipation aluminum strips are typically added to the outside of the PTC heating element. The heat generated by the PTC ceramic can be dissipated through the heat dissipation aluminum strips, but the heat dissipation effect of existing heat dissipation aluminum strips is still not ideal. To address the above problem, the prior art utility model patent with application number 202321377445.2 discloses a window-type heat dissipation strip, including heat dissipation fins. The heat dissipation fins are wavy and have several windows. The windows are elongated and have blades on their outer sides. The ends of the blades are fan-shaped. One side of the blade is connected to one side of the window, and the other side of the blade forms an opening with the other side of the window. The length of the blade is shorter than the length of the window. Both ends of the blade are provided with a sealing cover, and the other side of the sealing cover extends to the corresponding end of the window. This invention provides a closed cover on both sides of the blade, connecting the blade tip to the blade window. In addition, the blade is designed with a fan-shaped end face. During use, this can effectively reduce the amount of air escaping and increase the time that air stays in the blade, thereby effectively improving the heat transfer efficiency.

[0003] However, in actual use and production, the blade opening direction of the existing structure is basically set on the same side, which results in the same direction of airflow disturbance. Under stable air intake conditions, some gas will pass directly through the heat exchange space and cannot directly contact the heat sink, affecting the heat conduction efficiency and leaving room for further improvement. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art by providing a heat dissipation strip that solves the above-mentioned problem.

[0005] To achieve the above objectives, a heat dissipation strip is provided, comprising a substrate, wherein a first heat-conducting pleat and a second heat-conducting pleat are fixedly connected to both sides of the substrate, and an encapsulation plate is fixedly connected to the side of the first and second heat-conducting pleats away from the substrate. Encapsulation edging is provided at both ends of the two encapsulation plates. A grounding plate is fixedly connected to the middle of one end of the substrate. Each of the first and second heat-conducting pleats is provided with multiple pleat plates. Both sides of the multiple pleat plates are provided with turbulence windows, and the opening directions of the turbulence windows of two adjacent pleat plates are symmetrically arranged. The opening directions of the turbulence windows of the corresponding positions of the first and second heat-conducting pleats are opposite.

[0006] The turbulence window includes multiple air inlet turbulence windows, multiple air outlet turbulence windows, and turbulence plates. The multiple air inlet turbulence windows and air outlet turbulence windows are symmetrically arranged on both sides of the pleated plate. A turbulence plate is provided on one side of the opening direction of the multiple air inlet turbulence windows and air outlet turbulence windows, and the turbulence plates of the air inlet turbulence windows and air outlet turbulence windows are in opposite directions.

[0007] According to the aforementioned heat dissipation strip, the cross-sections of both encapsulation plates are equilateral trapezoids symmetrical with respect to the substrate, and the hypotenuse of the equilateral trapezoid is the side closer to the substrate.

[0008] According to the aforementioned heat dissipation strip, the peak and trough positions of the first and second heat-conducting pleats are respectively fixedly welded to the substrate and the corresponding encapsulation plate.

[0009] According to the aforementioned heat dissipation strip, a solder flux layer is provided on both sides of the substrate and on the side of the two encapsulation plates closest to the substrate.

[0010] According to the aforementioned heat dissipation strip, the flux layer is an aluminum-silicon film with a silicon content of 12%.

[0011] According to the heat dissipation strip, the peaks and troughs of the first and second heat-conducting pleats on the side near the substrate are arranged alternately.

[0012] The above solution has at least one of the following beneficial effects:

[0013] 1. The first and second heat-conducting pleats of this utility model are designed symmetrically with turbulence windows of adjacent blades, while the opening directions of the turbulence windows of the first and second heat-conducting pleats are opposite. This makes the turbulence channel formed by the first and second heat-conducting pleats generate more turbulence directions, and makes the internal airflow generate more micro-cyclones, which facilitates more gas to come into contact with the heat sink, thereby improving heat dissipation efficiency and enhancing the practicality of the device.

[0014] 2. By staggering the ends of the first and second heat-conducting pleats, this utility model doubles the number of connection points between the substrate and the heat-conducting pleats compared to the original symmetrical design, thus improving the heat conduction efficiency between the substrate and the heat-conducting pleats. At the same time, the staggered design of the flow channels formed by the first and second heat-conducting pleats allows the airflow to be further mixed and counteracted at the outlet, enhancing the practicality of the device.

[0015] 3. This utility model is equipped with two encapsulation plates, which not only facilitates the installation and gluing of the heating element, but also allows the inlet and outlet ducts formed by the first and second heat-conducting pleats to be different sizes through the trapezoidal cross-section design. When the inlet is larger than the outlet, the wind speed can be increased, which facilitates the airflow to collide and mix.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a three-dimensional structural diagram of a heat dissipation strip according to the present invention;

[0019] Figure 2 for Figure 1 Enlarged view of point A;

[0020] Figure 3 This is a schematic diagram of the internal structure of a heat dissipation strip according to the present invention.

[0021] Legend:

[0022] 1. Substrate; 2. Encapsulation board; 3. First thermally conductive pleat; 4. Second thermally conductive pleat; 5. Encapsulation edge; 6. Pleat plate; 7. Baffle window; 71. Inlet baffle window; 72. Outlet baffle window; 73. Baffle plate; 8. Connector board. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. Preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model. The drawings are all in a very simplified form and use non-precise proportions. They are only used to help to explain the embodiments of the present utility model in a convenient and clear way, and should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-3 This utility model provides a heat dissipation strip, including a substrate 1. A first heat-conducting pleat 3 and a second heat-conducting pleat 4 are fixedly connected to both sides of the substrate 1. An encapsulation plate 2 is fixedly connected to the side of the first heat-conducting pleat 3 away from the substrate 1. The cross-section of the two encapsulation plates 2 is an equilateral trapezoid that is symmetrical with respect to the substrate 1, and the hypotenuse of the equilateral trapezoid is the side closer to the substrate 1. This not only facilitates the installation and application of adhesive to the heating element, but also allows the inlet and outlet air ducts formed by the first heat-conducting pleat 3 and the second heat-conducting pleat 4 to be different sizes through the trapezoidal cross-section design. When the air inlet is larger than the air outlet, the wind speed can be increased, which facilitates the airflow mixing. Encapsulation edging 5 is provided at both ends of the two encapsulation plates 2. A grounding plate 8 is fixedly connected to the middle of one end of the substrate 1.

[0025] A flux layer is provided on both sides of the substrate 1 and on the side of the two encapsulation plates 2 near the substrate 1. The flux layer is an aluminum-silicon film with a silicon content of 12%. The peaks and troughs of the first thermally conductive pleats 3 and the second thermally conductive pleats 4 on the side near the substrate 1 are arranged alternately. The peaks and troughs of the first thermally conductive pleats 3 and the second thermally conductive pleats 4 are ultrasonically welded to the substrate 1 and the corresponding encapsulation plate 2, respectively, which effectively improves the stability of the welding and prevents the occurrence of poor welding. Compared with the original symmetrical design, the number of connection points between the substrate 1 and the thermally conductive pleats is doubled, which improves the conduction efficiency between the substrate 1 and the thermally conductive pleats. At the same time, the flow channels formed by the first thermally conductive pleats 3 and the second thermally conductive pleats 4 are designed to be staggered, so that the airflow can be further flushed and mixed at the air outlet.

[0026] Both the first heat-conducting pleated blade 3 and the second heat-conducting pleated blade 4 are provided with multiple pleated plates 6. Each pleated plate 6 has a turbulence window 7 on both sides, and the opening directions of the turbulence windows 7 on adjacent pleated plates 6 are symmetrical. The opening directions of the turbulence windows 7 on corresponding positions of the first heat-conducting pleated blade 3 and the second heat-conducting pleated blade 4 are opposite. The turbulence windows 7 include multiple inlet turbulence windows 71, multiple outlet turbulence windows 72, and turbulence plates 73. The multiple inlet turbulence windows 71 and the outlet turbulence windows 72 are... The multiple air inlet baffles 71 and air outlet baffles 72 are symmetrically arranged on both sides of the pleated plate 6. Each side of the opening direction of the multiple air inlet baffles 71 and air outlet baffles 72 is provided with a baffle 73. The baffles 73 of the air inlet baffles 71 and air outlet baffles 72 are in opposite directions. This can generate more turbulence directions in the multiple baffle channels formed by the first heat-conducting pleated plate 3 and the second heat-conducting pleated plate 4 substrate 1 and the encapsulation plate 2, so that the internal airflow generates more micro cyclones, which facilitates more gas to contact the heat sink, thereby improving the heat dissipation efficiency.

[0027] Working Principle: Compared with existing designs, this invention features a first thermally conductive pleated blade 3 and a second thermally conductive pleated blade 4. By symmetrically designing the turbulence windows 7 of adjacent blades and having opposite opening directions for the turbulence windows 7, the turbulence channel formed by the first thermally conductive pleated blade 3 and the second thermally conductive pleated blade 4 generates more turbulence directions, causing more micro-cyclones in the internal airflow. This facilitates more gas contact with the heat sink, thereby improving heat dissipation efficiency. Simultaneously, by staggering the ends of the pleats of the first thermally conductive pleated blade 3 and the second thermally conductive pleated blade 4, compared to the original symmetrical design, the number of connection points between the substrate 1 and the two thermally conductive pleated blades on both sides is doubled, improving the conduction efficiency between the substrate 1 and the two thermally conductive pleated blades on both sides. Furthermore, the staggered design of the flow channel formed by the first thermally conductive pleated blade 3 and the second thermally conductive pleated blade 4 allows for further mixing and counter-mixing of the airflow at the outlet.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A heat sink, comprising a substrate (1), characterized in that: The substrate (1) is fixedly connected to both sides with a first heat-conducting fold (3) and a second heat-conducting fold (4). The first heat-conducting fold (3) and the second heat-conducting fold (4) are fixedly connected to a packaging plate (2) on the side away from the substrate (1). The two packaging plates (2) are provided with packaging edges (5) at both ends. The middle of one end of the substrate (1) is fixedly connected to a power connection plate (8). The first heat-conducting fold (3) and the second heat-conducting fold (4) are provided with multiple fold plates (6). The multiple fold plates (6) are provided with turbulence windows (7) on both sides. The turbulence windows (7) of two adjacent fold plates (6) are symmetrically arranged. The turbulence windows (7) of the corresponding fold plates (6) of the first heat-conducting fold (3) and the second heat-conducting fold (4) are opposite in direction. The turbulence window (7) includes multiple inlet turbulence windows (71), multiple outlet turbulence windows (72), and turbulence plates (73). The multiple inlet turbulence windows (71) and outlet turbulence windows (72) are symmetrically arranged on both sides of the pleated plate (6). A turbulence plate (73) is provided on one side of the opening direction of the multiple inlet turbulence windows (71) and outlet turbulence windows (72), and the turbulence plates (73) of the inlet turbulence windows (71) and outlet turbulence windows (72) are in opposite directions.

2. A heat dissipation strip according to claim 1, characterized in that, Both of the encapsulation plates (2) have cross sections that are equilateral trapezoids that are symmetrical with respect to the substrate (1), and the hypotenuse of the equilateral trapezoid is the side closer to the substrate (1).

3. A heat dissipation strip according to claim 1, characterized in that, The peak and trough positions of the first thermally conductive pleat (3) and the second thermally conductive pleat (4) are fixedly welded to the substrate (1) and the corresponding encapsulation plate (2), respectively.

4. A heat dissipation strip according to claim 1, characterized in that, The substrate (1) has solder flux layers on both sides and on the side of the two encapsulation plates (2) closest to the substrate (1).

5. A heat dissipation strip according to claim 4, characterized in that, The flux layer is an aluminum-silicon film with a silicon content of 12%.

6. A heat dissipation strip according to claim 1, characterized in that, The peaks and troughs of the first thermally conductive pleats (3) and the second thermally conductive pleats (4) on the side near the substrate (1) are arranged alternately.

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