A heat sink fin structure
By introducing high thermal conductivity aluminum plates and shape memory alloy plates into the fin structure of outdoor monitoring equipment, the problem of insufficient heat dissipation area is solved, enabling automatic increase of heat dissipation area at high temperatures and extending the service life of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU TENGYU IND & TRADE CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-07-07
AI Technical Summary
When outdoor monitoring equipment faces increased heat dissipation demands during hot summer months, the existing finned structure has a fixed heat dissipation area, which prevents the equipment from dissipating heat quickly and shortens its service life.
The main body is made of aluminum plate fins with high thermal conductivity. The two sides are provided with arc-shaped flow channels and shape memory alloy plates. The shape memory alloy plates unfold after being heated to form flow channels, increasing the heat dissipation area. They are also coated with nano-silica and silicone resin thermal radiation coating to assist in heat dissipation.
When the heat dissipation demand of the equipment increases, the heat dissipation area is automatically increased through the thermal response of the shape memory alloy sheet, thereby improving the heat dissipation efficiency and extending the service life of the equipment.
Smart Images
Figure CN224473607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radiator technology, specifically a radiator fin structure. Background Technology
[0002] To prevent unnecessary interference such as noise, most common outdoor monitoring equipment uses non-powered radiators for heat dissipation. These radiators typically consist of a heat-conducting plate fixed to the equipment, multiple fins fixed parallel to the plate with gaps between adjacent fins, and the heat is dissipated through the heat-conducting plate. The multiple fins increase the heat dissipation area of the plate, thus lowering the operating temperature of the equipment. However, in the hot summer, the temperature of outdoor monitoring equipment rises sharply, increasing the demand for heat dissipation. Since the heat dissipation area of the fins is fixed, the temperature of the outdoor monitoring equipment cannot be dissipated more quickly, shortening its service life. Utility Model Content
[0003] The purpose of this invention is to address the aforementioned shortcomings by providing a radiator fin structure that can increase the heat dissipation area of the fins when the heat dissipation demand of the equipment increases, allowing the equipment to dissipate heat more quickly and extending the service life of outdoor monitoring equipment.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A heat sink fin structure includes a heat-conducting plate, multiple fin bodies fixed parallel to the heat-conducting plate, and gaps between adjacent fin bodies. The fin body comprises a high thermal conductivity aluminum plate, with multiple arc-shaped flow channels on both sides of the high thermal conductivity aluminum plate, and a shape memory alloy sheet fixed at one end at the opening of each arc-shaped flow channel. The shape memory alloy sheet bends upon heating, forming a flow channel with the adjacent arc-shaped flow channels.
[0006] Furthermore, the bottoms of the arc-shaped flow channels on the left and right sides of the fin body are connected by multiple heat dissipation holes.
[0007] Furthermore, when the shape memory alloy sheet is in a retracted state, the shape memory alloy sheet seals both ends of the heat dissipation hole.
[0008] Furthermore, the shape memory alloy sheet is made of SMA material.
[0009] Furthermore, the phase transition temperature range of the shape memory alloy sheet is 50–90°C.
[0010] Furthermore, the outer side of the shape memory alloy sheet is coated with a thermal radiation coating layer composed of nano-silica and silicone resin.
[0011] The beneficial effects of this utility model are:
[0012] In practical applications, at room temperature, the shape memory alloy fins retract into the arc-shaped guide grooves, reducing wind resistance. As the temperature discharged from the heat-conducting plate increases, the fin body heats up to the deformation temperature of the shape memory alloy fins. The shape memory alloy fins then expand and return to their original shape, forming a guide channel with the adjacent arc-shaped guide grooves, increasing the heat dissipation area of the fin body. This invention can increase the heat dissipation area of the fins when the heat dissipation demand of the equipment increases, allowing the temperature of the equipment to dissipate more quickly and extending the service life of outdoor monitoring equipment. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the unfolded state of the shape memory alloy sheet 3 in this utility model;
[0014] Figure 2 This is a schematic diagram of the shape memory alloy sheet 3 in the retracted state in this utility model;
[0015] Figure 3 This is a cross-sectional view of the fin body in this utility model;
[0016] Figure reference numerals: 1. Heat-conducting plate; 2. Fin body; 21. Arc-shaped flow channel; 22. Heat dissipation hole; 3. Shape memory alloy sheet. Detailed Implementation
[0017] like Figure 1 , Figure 2 and Figure 3 As shown, a heat sink fin structure includes a heat-conducting plate 1, multiple fin bodies 2 fixed parallel to the heat-conducting plate 1, and gaps between adjacent fin bodies 2. The fin body 2 is characterized in that: the fin body 2 includes a high thermal conductivity aluminum plate, and multiple arc-shaped flow channels 21 are respectively provided on both sides of the high thermal conductivity aluminum plate. A shape memory alloy sheet 3 is fixed at one end at the opening of the arc-shaped flow channel 21. The shape memory alloy sheet 3 bends after being heated and forms a flow channel by closing with the adjacent arc-shaped flow channel 21.
[0018] At room temperature, the shape memory alloy sheet 3 retracts into the arc-shaped guide groove 21, reducing wind resistance. As the temperature discharged from the heat conduction plate 1 increases, the fin body 2 heats up to the deformation temperature of the shape memory alloy sheet 3. The shape memory alloy sheet 3 then expands and returns to its original shape, forming a guide channel with the adjacent arc-shaped guide groove 21, increasing the heat dissipation area of the fin body 2. This invention can increase the heat dissipation area of the fins when the heat dissipation demand of the equipment increases, so that the temperature of the equipment can be dissipated more quickly, extending the service life of outdoor monitoring equipment.
[0019] like Figure 1 , Figure 2 and Figure 3As shown, the bottoms of the arc-shaped guide grooves 21 facing each other on the left and right sides of the fin body 2 are connected by multiple heat dissipation holes 22. In this embodiment, after the temperature of the heat conduction plate 1 rises, the heat dissipation area of the fin body 2 can be further increased through the heat dissipation holes 22, thereby improving the heat dissipation effect of the fin body 2.
[0020] like Figure 1 , Figure 2 and Figure 3 As shown, when the shape memory alloy sheet 3 is in the retracted state, the shape memory alloy sheet 3 seals both ends of the heat dissipation hole 22; in this embodiment, when the temperature discharged from the heat conduction plate 1 is low, the shape memory alloy sheet 3 seals both ends of the heat dissipation hole 22, which can effectively reduce wind resistance.
[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the shape memory alloy sheet 3 is made of SMA material; in this embodiment, the shape memory alloy sheet 3 made of SMA material has good deformation ability, and its ends can be firmly welded to the fin body 2.
[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the phase transition temperature range of the shape memory alloy sheet 3 is 50-90°C. In this embodiment, when the temperature conducted from the fin body 2 is 50-90°C, the shape memory alloy sheet 3 is heated and unfolds to restore its original shape, forming a flow channel with the adjacent arc-shaped flow channel 21, thereby increasing the heat dissipation area of the fin body 2.
[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the outer side of the shape memory alloy sheet 3 is coated with a thermal radiation coating layer composed of nano-silica and silicone resin. In this embodiment, relying on the thermal radiation capability of the thermal radiation coating composed of nano-silica and silicone resin, the heat conducted from the fin body 2 can be radiated outward through infrared rays.
[0024] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the scope defined by this utility model.
Claims
1. A heat sink fin structure, comprising a heat-conducting plate (1), multiple fin bodies (2) fixed parallel to the heat-conducting plate (1), with gaps between adjacent fin bodies (2), characterized in that: The fin body (2) includes a high thermal conductivity aluminum plate, and multiple arc-shaped flow channels (21) are respectively provided on both sides of the high thermal conductivity aluminum plate. A shape memory alloy sheet (3) is fixed at one end of the arc-shaped flow channel (21) opening. The shape memory alloy sheet (3) bends after being heated and forms a flow channel with the adjacent arc-shaped flow channel (21).
2. The radiator fin structure according to claim 1, characterized in that, The arc-shaped guide grooves (21) on the left and right sides of the fin body (2) are connected by multiple heat dissipation holes (22).
3. A radiator fin structure according to claim 1, characterized in that, When the shape memory alloy sheet (3) is in a retracted state, the shape memory alloy sheet (3) seals the two ends of the heat dissipation hole (22).
4. A radiator fin structure according to claim 1, characterized in that, The shape memory alloy panel (3) is made of SMA material.
5. A radiator fin structure according to claim 4, characterized in that, The phase transition temperature range of the shape memory alloy sheet (3) is 50 to 90°C.
6. A radiator fin structure according to claim 1, characterized in that, The outer side of the shape memory alloy sheet (3) is coated with a thermal radiation coating layer composed of nano-silica and silicone resin.