Curved surface diagonal normal disturbance air cooling fin and radiator

Abstract

The application discloses a curved surface diagonal normal-direction turbulence wind cooling heat dissipation rib and a heat radiator, relates to the technical field of heat radiators, and discloses the technical scheme that the heat dissipation rib adopts includes a plurality of heat dissipation cells, the heat dissipation cell includes two corrugated plates, two human-shaped plates and an X-shaped plate, a human-shaped plate and the X-shaped plate enclose a first air duct, another human-shaped plate and the X-shaped plate enclose a second air duct, the X-shaped plate and the two corrugated plates enclose two third air ducts respectively, the corrugated plate of any two adjacent heat dissipation cells on the Y axis encloses two fourth air ducts, the human-shaped plate and the two corrugated plates enclose two C-shaped openings respectively, and the C-shaped opening of any two heat dissipation cells on the Z axis encloses a fifth air duct; the X-shaped plate and the corrugated plate are all provided with diagonal turbulence holes.The number of air ducts is increased, the contact area of airflow with multiple air ducts is obviously increased, and the corrugated plate with large surface area is combined; when airflow passes through the diagonal turbulence holes, a turbulence zone is generated to destroy a temperature boundary layer; and the heat conduction cross-sectional area is increased.

Description

Technical Field

[0001] This invention relates to the field of radiator technology, and more particularly to a curved surface with diagonal normal turbulence air-cooled heat dissipation ribs and a radiator. Background Technology

[0002] In existing air-cooled heat sink designs, designers typically employ straight-tooth, needle-shaped, or corrugated fins to improve heat dissipation efficiency. These fins conduct heat from the base, which is then dissipated through thermal radiation and convection. According to basic heat transfer theory, the heat flow rate transferred by conduction is proportional to the cross-sectional area perpendicular to the heat flow direction, while the heat flow rate transferred by convection and radiation is proportional to the corresponding surface area. However, straight-tooth structures create a limited airflow pattern, leading to stable laminar flow across the fin surface and the accumulation of a thermal boundary layer. This causes heated air to stagnate, hindering the contact between fresh, cool air and the fins. Needle-shaped structures cannot provide a larger surface area, thus limiting heat dissipation efficiency. Corrugated plates can provide a larger surface area within the same dimensions, but their wall thickness is typically thin (approximately 0.15-0.3 mm) due to manufacturing limitations, resulting in a small cross-sectional area and insufficient thermal conductivity. This makes it difficult to efficiently conduct heat from the base to the ends of the fins, affecting overall heat dissipation performance and making them unsuitable for high-power, high-density applications. Summary of the Invention

[0003] To address the problems in existing technologies, such as thermal boundary layer accumulation in straight toothed heat dissipation ribs, weak heat convection and radiation due to small surface area of ​​needle-shaped heat dissipation ribs, and insufficient heat conduction due to thin corrugated plates, this invention provides a curved surface diagonal normal turbulence air-cooled heat dissipation rib and heat sink.

[0004] The present invention provides the following technical solution: a curved surface diagonal normal turbulence air cooling rib, comprising multiple heat dissipation cells stacked sequentially along the X-axis, Y-axis and Z-axis to form a three-dimensional array, wherein the X-axis, Y-axis and Z-axis are perpendicular to each other, and the multiple heat dissipation cells are integrally formed; The heat dissipation cell includes two corrugated plates extending along the Z-axis, two humanoid plates disposed between the two corrugated plates, and an X-shaped plate disposed between the two humanoid plates. One humanoid plate and the X-shaped plate form a first air duct, the other humanoid plate and the X-shaped plate form a second air duct, the X-shaped plate and the two corrugated plates respectively form two third air ducts, and the humanoid plate and the two corrugated plates respectively form two C-shaped openings. On the Y-axis, the corrugated plates of any two adjacent heat dissipation cells form two fourth air ducts, and on the Z-axis, the C-shaped openings of any two heat dissipation cells form a fifth air duct. The X-shaped plate is provided with diagonal turbulence holes connecting the first air duct to a third air duct, and diagonal turbulence holes connecting the second air duct to another third air duct. The corrugated plate is provided with diagonal turbulence holes connecting the third air duct to two adjacent fourth air ducts.

[0005] Preferably, the heat dissipation cell has a first through-flow channel at both ends on the Z-axis, and the first through-flow channel extends along the Y-axis and penetrates the corrugated plate and the human-shaped plate.

[0006] Preferably, the first through-flow turbulence channel extends to the edge of the corrugated plate and the human-shaped plate to form an opening, and the first through-flow turbulence channels of any two adjacent heat dissipation cells on the Z-axis form a through-flow turbulence channel.

[0007] Preferably, the heat dissipation cell is provided with a second straight-through turbulence channel at both ends on the X-axis, and the second straight-through turbulence channel extends along the Y-axis and penetrates the corrugated plate and the X-shaped plate.

[0008] Preferably, the second straight-through turbulence channel extends to the edge of the corrugated plate and the X-shaped plate to form an opening, and the second straight-through turbulence channels of any two adjacent heat dissipation cells on the X-axis form a straight-through turbulence channel.

[0009] Preferably, the two corrugated plates are symmetrical about the first central axis of the heat dissipation cell, and the two human-shaped plates are symmetrical about the second central axis of the heat dissipation cell.

[0010] A heat sink includes a heat sink substrate and heat sink ribs disposed on the heat sink substrate, wherein the heat sink ribs are curved face diagonal normal turbulence air cooling heat sink ribs.

[0011] The beneficial effects of this invention are as follows: multiple heat dissipation cells are stacked into a three-dimensional array to form multiple air ducts, increasing the number of air ducts and significantly increasing the contact area between the airflow and multiple air ducts, thereby improving the thermal convection and thermal radiation capabilities; the first and second turbulence ports connect two adjacent air ducts that share a single wingplate, generating a turbulence zone when the airflow passes through the turbulence ports, disrupting the temperature boundary layer, and the turbulence ports are arranged in a straight line, reducing airflow resistance and improving thermal convection capabilities; the cross-sectional area perpendicular to the heat flow direction is increased, improving thermal conductivity; and all of the above factors combined effectively improve heat dissipation efficiency. Attached Figure Description

[0012] Figure 1 A three-dimensional diagram of one embodiment of a heat dissipation rib.

[0013] Figure 2 A partial enlarged top view of one embodiment of the heat dissipation rib.

[0014] Figure 3 A front view of one embodiment of the heat dissipation rib.

[0015] Figure 4 A side view of one embodiment of the heat dissipation rib.

[0016] Figure 5 A three-dimensional diagram of one embodiment of a heat dissipation cell.

[0017] Figure 6 This is a side view of one embodiment of a heat dissipation cell.

[0018] Figure 7 This is a temperature distribution diagram for heat dissipation simulation of this utility model.

[0019] Figure 8 The temperature distribution diagram is a simulation diagram of the heat dissipation of the existing straight toothed heat dissipation fins.

[0020] Figure 9 The temperature distribution diagram is a simulation diagram of the heat dissipation of the existing corrugated plate heat dissipation ribs.

[0021] Reference numerals: 10-heat dissipation cell, 11-corrugated plate, 12-human-shaped plate, 13-X-shaped plate, 14-C-shaped opening, 21-first air duct, 22-second air duct, 23-third air duct, 24-fourth air duct, 25-fifth air duct, 31-diagonal turbulence hole, 32-first straight-through turbulence channel, 33-second straight-through turbulence channel, 40-heat dissipation substrate. Detailed Implementation

[0022] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement them after reading this specification. It should be understood that the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.

[0023] This utility model provides a curved surface diagonal normal turbulence air-cooling rib, comprising multiple heat dissipation cells 10 stacked in a three-dimensional array. Please refer to... Figure 1-4 In a three-dimensional coordinate system composed of mutually perpendicular X-axis, Y-axis and Z-axis, multiple heat dissipation cells 10 are stacked sequentially along the X-axis, Y-axis and Z-axis, and are integrally formed into a whole.

[0024] Please refer to Figure 5 , 6 The heat dissipation cell 10 includes two corrugated plates 11 extending along the Z-axis, two humanoid plates 12 disposed between the two corrugated plates 11, and an X-shaped plate 13 disposed between the two humanoid plates 12. Preferably, the two corrugated plates 11 are symmetrical about the first central axis Z1 of the heat dissipation cell, and the two humanoid plates 12 are symmetrical about the second central axis Y1 of the heat dissipation cell. Both the humanoid plates 12 and the X-shaped plate 13 adopt a curved structure as shown in Figure 6, and their inner and outer walls are curved surfaces.

[0025] Air ducts are formed inside the heat dissipation cell 10 and between any two heat dissipation cells 10. One of the human-shaped plates 12 and the X-shaped plate 13 forms a first air duct 21, another human-shaped plate 12 and the X-shaped plate 13 form a second air duct 22, and the X-shaped plate 13 forms two third air ducts 23 with the two corrugated plates 11 respectively; the human-shaped plate 12 forms two C-shaped openings 14 with the two corrugated plates 11 respectively. Please refer to... Figure 4 After multiple heat dissipation cells 10 are stacked sequentially along the X-axis, Y-axis and Z-axis to form a three-dimensional array, the corrugated plates 11 of any two adjacent heat dissipation cells 10 on the Y-axis form two fourth air ducts 24, and the C-shaped openings 14 of any two heat dissipation cells 10 on the Z-axis form a fifth air duct 25.

[0026] All of the above-mentioned air ducts extend along the X-axis in a straight line and form a structure as shown in the figure. Figure 4 The air duct array shown has multiple air ducts that evenly divide the airflow into multiple streams when the airflow enters the heat dissipation ribs parallel to the X-axis. As the airflow passes through, it carries away the heat dissipated from the inner wall of each air duct. Compared with the straight tooth or needle-shaped heat dissipation ribs used in the prior art, the number of air ducts is greatly increased within the same airflow cross-sectional area. The contact area between the airflow and the above multiple air ducts is significantly increased. Combined with the corrugated plate with a large surface area, the heat radiation and heat convection capabilities of the heat dissipation ribs are improved.

[0027] Meanwhile, this invention is compared with existing straight-toothed and needle-shaped heat dissipation ribs of the same specifications. A section of equal area is taken from each of the three ribs on a cross-section perpendicular to the heat flow direction, and the cross-sectional area of ​​each rib within this section is calculated. Please refer to... Figure 3 The heat source is located below the heat dissipation ribs, and the heat flow direction is consistent with the positive Z-axis. Due to the influence of processing technology and convective heat transfer, the straight-toothed and needle-shaped heat dissipation ribs have lower densities, thinner thicknesses, and smaller diameters. Because of the presence of the human-shaped and X-shaped plates, the cross-sectional area of ​​this invention in this region is much larger than that of the other two types of heat dissipation ribs in this region. This advantage makes the heat conduction capacity and heat dissipation efficiency of this invention far superior to existing heat dissipation ribs.

[0028] The X-shaped plate 13 is also provided with a diagonal turbulence hole 31 that connects the first air duct 21 to a third air duct 23, and a diagonal turbulence hole 31 that connects the second air duct 22 to another third air duct 23. The corrugated plate 11 is provided with a diagonal turbulence hole 31 that connects the third air duct 23 to two adjacent fourth air ducts 24.

[0029] In existing technologies, when using straight-tooth, needle-shaped, or corrugated heat dissipation ribs, airflow over the rib surface tends to form a stable laminar flow, accumulating a thermal boundary layer. This causes heated air to stagnate, hindering the contact between fresh, cool air and the ribs. In this invention, the diagonal turbulence holes 31 extend along the normal direction of the inner wall of the duct. When airflow passes through the duct, the diagonal turbulence holes 31 guide the airflow along the normal direction of the inner wall, disrupting the airflow direction and creating localized turbulence. This multi-regional turbulence effectively disrupts the thermal boundary layer, allowing for more thorough contact between the airflow and the heat dissipation rib surface, thus improving heat dissipation efficiency.

[0030] Furthermore, the heat dissipation cell 10 has a first through-flow turbulence channel 32 at both ends on the Z-axis. The first through-flow turbulence channel 32 extends along the Y-axis and penetrates the corrugated plate 11 and the human-shaped plate 12, connecting a fifth air duct 25 with an adjacent fifth air duct 25, a fourth air duct 24, a first air duct 21, and a second air duct 22. When the airflow passes through, it also generates local turbulence, which disrupts the laminar thermal boundary layer and improves heat dissipation efficiency. One embodiment is as follows: Figure 3 , 5 As shown, the first through-flow turbulence channel 32 extends to the edge of the corrugated plate 11 and the human-shaped plate 12 to form an opening. The first through-flow turbulence channels 32 of any two adjacent heat dissipation cells 10 on the Z-axis form a larger through-flow turbulence channel. In other embodiments, the first through-flow turbulence channel 32 can also adopt a complete circular structure.

[0031] The heat dissipation cell 10 has second straight-through turbulence channels 33 at both ends on the X-axis. These second straight-through turbulence channels 33 extend along the Y-axis and penetrate the corrugated plate 11 and the X-shaped plate 13, connecting one third air duct 23 with an adjacent third air duct 23 and a fourth air duct 24. When airflow passes through these channels, local turbulence is generated, disrupting the laminar thermal boundary layer and improving heat dissipation efficiency. One embodiment is as follows: Figure 3 , 5 As shown, the second straight-through turbulence channel 33 extends to the edge of the corrugated plate 11 and the X-shaped plate 13 to form an opening. Any two adjacent heat dissipation cells 10 on the X-axis form a larger straight-through turbulence channel with the second straight-through turbulence channel 33. In other embodiments, the second straight-through turbulence channel 33 may also adopt a complete circular structure.

[0032] The present invention also provides a heat sink, including a heat sink substrate 40 and heat sink ribs disposed on the heat sink substrate 40, wherein the heat sink ribs are the aforementioned curved surface diagonal normal turbulence air cooling heat sink ribs.

[0033] Temperature simulations were conducted using the heat sink provided by this invention, as well as heat sinks employing straight-tooth heat dissipation ribs and corrugated plate heat dissipation ribs, to compare and verify the heat dissipation effect of this invention. The overall dimensions of the heat dissipation ribs in all three are the same, 80*50*25mm. The wall thickness and length of the heat dissipation cells, as well as the wall thickness and spacing of each heat dissipation fin in the straight-tooth and corrugated plate heat dissipation ribs, were adjusted multiple times. After multiple simulations, the example with the best heat dissipation effect was selected for comparison. The optimal simulation results are as follows: Figure 7 , 8 As shown in Figures 9 and 9.

[0034] Different colors represent different temperatures. The highest simulated temperature for the straight-tooth heat dissipation fins is 85.89℃, the lowest is 30.36℃, and the maximum temperature difference is 55.53℃. The highest simulated temperature for the corrugated plate heat dissipation fins is 76.95℃, the lowest is 32.12℃, and the maximum temperature difference is 44.83℃. The highest simulated temperature for the turbulence-driven heat dissipation fins used in this invention is reduced to 68.1℃, the lowest to 32.59℃, and the maximum temperature difference is reduced to 35.51℃. Compared with the heat sink using straight-tooth heat dissipation fins, this invention improves heat dissipation efficiency by 20.71% and temperature uniformity by 36.05%; compared with the heat sink using corrugated plate heat dissipation fins, this invention improves heat dissipation efficiency by 11.5% and temperature uniformity by 20.79%. Therefore, this invention significantly improves heat dissipation efficiency.

[0035] The above describes one or more embodiments of the present invention in a relatively specific and detailed manner, but it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A curved surface with diagonal normal turbulence air-cooling fin, characterized in that, It includes multiple heat dissipation cells stacked sequentially along the X-axis, Y-axis and Z-axis to form a three-dimensional array, wherein the X-axis, Y-axis and Z-axis are perpendicular to each other, and the multiple heat dissipation cells are integrally formed. The heat dissipation cell includes two corrugated plates extending along the Z-axis, two humanoid plates disposed between the two corrugated plates, and an X-shaped plate disposed between the two humanoid plates. One humanoid plate and the X-shaped plate form a first air duct, the other humanoid plate and the X-shaped plate form a second air duct, the X-shaped plate and the two corrugated plates respectively form two third air ducts, and the humanoid plate and the two corrugated plates respectively form two C-shaped openings. On the Y-axis, the corrugated plates of any two adjacent heat dissipation cells form two fourth air ducts, and on the Z-axis, the C-shaped openings of any two heat dissipation cells form a fifth air duct. The X-shaped plate is provided with diagonal turbulence holes connecting the first air duct to a third air duct, and diagonal turbulence holes connecting the second air duct to another third air duct. The corrugated plate is provided with diagonal turbulence holes connecting the third air duct to two adjacent fourth air ducts.

2. The curved surface diagonal normal turbulence air-cooling heat dissipation rib according to claim 1, characterized in that, The heat dissipation cell has a first through-flow channel at both ends on the Z-axis. The first through-flow channel extends along the Y-axis and penetrates the corrugated plate and the human-shaped plate.

3. The curved surface diagonal normal turbulence air-cooling heat dissipation rib according to claim 2, characterized in that, The first straight-through turbulence channel extends to the edge of the corrugated plate and the human-shaped plate to form an opening, and the first straight-through turbulence channel of any two adjacent heat dissipation cells on the Z-axis forms a straight-through turbulence channel.

4. The curved surface diagonal normal turbulence air-cooling heat dissipation rib according to claim 1, characterized in that, The heat dissipation cell has a second straight-through turbulence channel at both ends on the X-axis. The second straight-through turbulence channel extends along the Y-axis and penetrates the corrugated plate and the X-shaped plate.

5. The curved surface diagonal normal turbulence air-cooling heat dissipation rib according to claim 4, characterized in that, The second straight-through turbulence channel extends to the edge of the corrugated plate and the X-shaped plate to form an opening, and the second straight-through turbulence channels of any two adjacent heat dissipation cells on the X-axis form a straight-through turbulence channel.

6. The curved surface diagonal normal turbulence air-cooling heat dissipation rib according to claim 1, characterized in that, The two corrugated plates are symmetrical about the first central axis of the heat dissipation cell, and the two human-shaped plates are symmetrical about the second central axis of the heat dissipation cell.

7. A heat sink, comprising a heat dissipation substrate and heat dissipation ribs disposed on the heat dissipation substrate, characterized in that, The heat dissipation rib is the curved surface diagonal normal turbulence air cooling heat dissipation rib as described in any one of claims 1 to 6.

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