Double-opening type radiating fin strip

Abstract

The utility model discloses a double-opening type radiating fin strip, which relates to the technical field of heaters and comprises radiating fins, a heat conduction end part and an air guide channel, each double-opening type heat dissipation fin strip is formed by arranging a plurality of heat dissipation fins at intervals, the two ends of the opposite side, in the length b direction, of each heat dissipation fin are connected with the side edge ends, in the length b direction, of the adjacent heat dissipation fins on the different side respectively, and heat conduction ends are formed in the connecting parts; the heat conduction end part is attached and fixed to the heating base surface of the heating element, and the heat conduction end part, the heat dissipation fins and the heating base surface jointly define an air guide duct structure; a plurality of convection grooves communicated with the air guide channels on the two sides of the heat dissipation fins are formed in the heat dissipation fins; according to the utility model, the plurality of convection grooves are formed in each radiating fin, the blades extending outwards towards the different sides are arranged on the two sides of each convection groove in an extending manner, and a straight air guide channel originally formed by the separation of the radiating fins is transformed into an air channel form which is mutually staggered and communicated, so that the boundary layer effect is weakened, and the heat conduction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of heater technology, specifically a double-opening heat dissipation fin. Background Technology

[0002] In scenarios such as electronic equipment operation and heating devices generating heat, the heat generated by the equipment during operation, whether passively generated or required by the equipment's purpose, needs to be transferred and carried away by specific heat dissipation components to prevent heat accumulation and exceeding the maximum temperature that the equipment can withstand.

[0003] In the prior art, most radiators use finned radiators with straight and continuous heat dissipation fins. When the heat dissipation fluid flows over the surface of the heat dissipation fins, it can be heated by the heat dissipation fins and the heat is transferred to the interior of the heat dissipation fluid. By continuously removing the heat dissipation fluid that has been heated on the surface of the heat dissipation fins and replenishing it with new unheated heat dissipation fluid, heat can be continuously removed from the surface of the heat dissipation fins.

[0004] However, the heat dissipation channels formed by the straight heat sink fins are also regular straight shapes. When the cooling fluid flows through them, a significant stratification occurs between the central region of the fluid and the boundary region near the surface of the heat sink fins, known as the fluid boundary layer effect. The boundary fluid near the heat sink fin surface experiences increased viscosity due to the high temperature of the fins. When heated fluid is removed and replaced by new unheated fluid, the boundary fluid exhibits a certain degree of resistance compared to the central fluid, resulting in flow lag. This means that the relatively hottest part of the fluid closest to the heat sink fins cannot be removed in time, failing to quickly remove heat from the fin surface and weakening the heat dissipation effect. Furthermore, the small contact area between ordinary heat sink fins and the heating element's surface significantly hinders the efficiency of heat transfer from the heating element to the heat sink fins. Therefore, a new heat dissipation structure needs to be designed to improve heat dissipation efficiency. Utility Model Content

[0005] This utility model discloses a double-opening heat dissipation fin, comprising heat dissipation fins, heat-conducting ends, and air ducts. Each double-opening heat dissipation fin is composed of several heat dissipation fins arranged at intervals. The two opposite ends of each heat dissipation fin along the length b direction are respectively connected to the side ends of the adjacent heat dissipation fins along the length b direction, and the connected parts form heat-conducting ends. The heat-conducting ends are attached and fixed to the heating base surface of the heating element. The heat-conducting ends, heat dissipation fins, and heating base surface together form an air duct structure. Several convection grooves are opened on the heat dissipation fins to connect the air ducts on both sides of the heat dissipation fins.

[0006] As a further improvement of this utility model, the length extension direction of the convection groove is parallel to the width a direction of the heat dissipation fins.

[0007] As a further improvement of this utility model, the two sides of the convection groove along the length direction are respectively provided with outward-flaring blades facing the opposite side of the heat dissipation fins, and the blades extend towards the opposite side edge of the convection groove where they are located.

[0008] As a further improvement of this utility model, the cross-sectional shape of the blade is arc-shaped, and the blade and the surface of the heat dissipation fins form an arc-shaped semi-enclosed structure.

[0009] As a further improvement of this utility model, the heat-conducting ends formed by the connection of two adjacent heat dissipation fins at their respective ends tend to extend outward, forming a continuous trapezoidal structure.

[0010] As a further improvement of this utility model, the outward angle of the blade is 25±5 degrees, and the end face of the blade is arc-shaped. The surface of the blade and the heat dissipation fins form an arc-shaped semi-enclosed structure, and the inner side of the blade envelops to form a curved air duct.

[0011] As a further improvement of this utility model, the heat dissipation fins are provided with two sets of convection grooves symmetrically arranged along the middle of the heat dissipation fins, and the outward-expanding blades on the same side of the two sets of convection grooves are also symmetrical relative to the middle of the heat dissipation fins.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The end of the heat dissipation fins connected to the adjacent side of this utility model is provided with a heat-conducting end, which increases the contact area between the heat dissipation fins and the heating base surface, greatly improving the speed and efficiency of heat transfer from the heating base surface to the heat dissipation fins. The existence of the curved air duct increases the contact time between the airflow and the heat dissipation fins, reduces the amount of unheated air that escapes, thereby improving the heat transfer efficiency.

[0014] Second, each heat dissipation fin of this utility model is provided with several convection grooves and blades extending outward to the opposite side on both sides of the convection grooves. This transforms the original straight air duct formed by the heat dissipation fins into an interlaced and interconnected air duct. Under the heat dissipation fin structure of this utility model, the fluid between the originally adjacent straight heat dissipation fins will be subjected to the cutting and disturbance effect of the heat conduction grooves and blades during flow, which will reduce the thickness of the high-temperature fluid that causes stagnation, thereby weakening the boundary layer effect.

[0015] Third, the blades on both sides of the convection channel of this utility model have an arc-shaped cross section, which forms an arc-shaped semi-enclosed structure with the surface of the heat dissipation fins. When air flows through, it can reduce the resistance to passage, allowing the airflow to pass through in a smoother manner and preventing wind noise caused by obstructing the airflow. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the heat dissipation fins and heat dissipation strips of this utility model;

[0017] Figure 2 A schematic diagram showing the heat-conducting end of the heat dissipation fins being attached to the heat-generating base surface to form an airflow channel;

[0018] Figure 3 These are three views of the heat dissipation fins of this utility model;

[0019] Figure 4 This is a schematic diagram showing the airflow direction as it passes through the heat sink fins.

[0020] 1. Heat dissipation fins; 101. Convection grooves; 1011. Blades; 1012. Curved air duct; 2. Heat-conducting end; 3. Air duct. Detailed Implementation

[0021] To better understand the purpose, structure, and function of this utility model, a more detailed description of the utility model is provided below in conjunction with the accompanying drawings. In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper," "lower," "left," "right," "inner," "outer," "horizontal," and "vertical" is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the invention, and is not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] For specific implementation examples, please refer to the appendix. Figure 1 -Appendix Figure 3

[0023] A double-opening heat dissipation fin includes heat dissipation fins 1, heat-conducting ends 2, and air ducts 3.

[0024] like Figure 1 As shown, a double-opening heat dissipation fin is formed by extruding and bending aluminum strips through a die. The extruded heat dissipation fin has a regular wavy structure, wherein two symmetrical heat dissipation fins 1 are formed on both sides of each peak or trough of the wavy structure. Figure 1 Enlarged structure in the lower right corner and Figure 3 (Structure in three-view drawing) Two sides of length b on each heat dissipation fin 1 are connected to the sides of adjacent heat dissipation fins 1 of length b on the opposite side. The connected parts of the two sides form a rectangular plane as a heat conduction end 2. Figure 1 The vertical wall structure indicated by the dashed box area); any two adjacent heat dissipation fins 1 are tilted and opened to opposite sides, and are arranged in a trapezoidal structure in conjunction with the heat-conducting end 2 plane.

[0025] The surface of the heat-conducting end 2 can be brazed and fixed to the heat-generating surface of the component requiring heat dissipation for heat conduction. For example... Figure 2As shown, in this embodiment, a double-opening heat dissipation fin has a trapezoidal airflow channel 3 formed on the side of the heat-conducting end 2 that is in contact with the heat-generating base surface when the heat-conducting end 2 is attached to the heat-generating base surface. Figure 2 (The trapezoidal area indicated by the dashed box) During heat dissipation, the airflow passes through the air guide 3 to carry away the heat from the surface of the heat dissipation fins 1.

[0026] Furthermore, the surface of the heat dissipation fin 1 is provided with a convection groove 101 along the width a direction, which penetrates and connects the air guide ducts 3 on both sides of the heat dissipation fin 1. Figure 1 (The through structure indicated by the dashed box in the middle), such as Figure 3 As shown in the lower half-sectional view, each heat dissipation fin 1 has two sets of convection slots 101 symmetrically arranged along the middle, and each set of convection slots 101 includes 6 evenly spaced convection slots 101.

[0027] Furthermore, on both sides of the convection channel 101 parallel to the length a of the heat dissipation fin 1, outward-flaring blades 1011 are respectively formed on opposite sides of the heat dissipation fin 1. The outward-flaring angle of the blades 1011 is 25±5 degrees, and the cross-section of the blades 1011 is as shown in the figure. Figure 3 As shown in the half-section top view below, it is arc-shaped and extends towards the middle of the convection channel 101. The two ends of the blade 1011 are connected to the surface of the heat dissipation fin 1 in an arc-shaped semi-encircling manner, forming a curved air duct 1012 that connects the two sides of the heat dissipation fin 1.

[0028] Heat dissipation principle:

[0029] like Figure 3 Lower half section view and Figure 4 As shown, when the airflow passes through the flat heat dissipation fins 1 for heat dissipation ( Figure 4 (Regarding the airflow movement above), the airflow streamlines are relatively straight, making it easy to generate temperature stratification, resulting in a significant fluid boundary layer effect, and a noticeable hindrance effect between the fluid in the boundary region and the fluid in the middle region; when the airflow passes through the heat dissipation fins 1 equipped with convection grooves 101 and blades 1011 ( Figure 4 (Regarding the airflow movement below), the originally straight airflow is cut and disturbed into multiple single-branch airflows that pass through the curved air duct 1012 and merge on the other side. This reduces the likelihood of temperature stratification, weakens the boundary layer effect of the fluid, and improves heat dissipation efficiency. Furthermore, the airflow from... Figure 4 The two different heat dissipation fin structures 1 pass from the right side to the left side. When the airflow passes through the lower structure, it has a longer contact time with the heat dissipation fin 1 than the upper structure, which enables the airflow to fully transfer heat to the heat dissipation fin 1, remove more heat, and improve heat dissipation efficiency.

[0030] The above description is only a preferred embodiment of the present utility model and is intended to illustrate the principle and effect of the present utility model, and is not intended to limit the present utility model. All variations, modifications and substitutions within the spirit and principle of the present design are within the protection scope of the present utility model.

Claims

1. A double-opening heat dissipation fin, characterized in that: Includes heat dissipation fins (1), heat-conducting end (2), and air duct (3); Each double-opening heat dissipation fin consists of several heat dissipation fins (1) arranged at intervals. Each heat dissipation fin (1) is connected to the opposite side end of the adjacent heat dissipation fin (1) along the length b direction at both ends, and the connected part forms a heat-conducting end (2). The heat-conducting end (2) is attached and fixed to the heating base surface of the heating element. The heat-conducting end (2), the heat dissipation fins (1) and the heating base surface together form the air duct (3) structure. The heat dissipation fins (1) are provided with a number of convection grooves (101) that connect the air guide channels (3) on both sides of the heat dissipation fins (1).

2. The double-opening heat dissipation fin as described in claim 1, characterized in that: The length of the convection groove (101) extends parallel to the width a direction of the heat dissipation fins (1).

3. The double-opening heat dissipation fin as described in claim 2, characterized in that: Along the length direction of the convection groove (101), there are outwardly flared blades (1011) on both sides facing the opposite side of the heat dissipation fins (1), and the blades (1011) extend toward the opposite side edge of the convection groove (101) where they are located.

4. A double-opening heat dissipation fin as described in claim 3, characterized in that: The cross-sectional shape of the blade (1011) is arc-shaped, and the blade (1011) and the surface of the heat dissipation fin (1) form an arc-shaped semi-enclosed structure.

5. A double-opening heat dissipation fin as described in claim 1, characterized in that: The heat-conducting ends (2) formed by the connection of two adjacent heat dissipation fins (1) extend outwards, forming a continuous trapezoidal structure.

6. A double-opening heat dissipation fin as described in claim 3, characterized in that: The outward angle of the blade (1011) is 25±5 degrees, and the end face of the blade (1011) is arc-shaped. The surface of the blade (1011) and the heat dissipation fin (1) are arc-shaped semi-enclosed. The inner side of the blade (1011) envelops to form a curved air duct (1012).

7. A double-opening heat dissipation fin as described in claim 3, characterized in that: The heat dissipation fins (1) are provided with two sets of convection grooves (101) symmetrically arranged along the middle of the heat dissipation fins, and the outward-expanding blades (1011) on the same side of the two sets of convection grooves (101) are also symmetrical relative to the middle of the heat dissipation fins (1).

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