A TPMS class circle through disturbance wind cooling fin and radiator
Patent Information
- Application Number
- CN202522387975.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-11-11
AI Technical Summary
[0003]针对现有技术方案中直齿状散热肋存在热边界层堆积、针状散热肋表面积较小导致热对流和热辐射能力弱、波纹板厚度较薄导致热传导能力不足等问题，本实用新型提供了一种TPMS类圆贯通扰流的风冷散热肋及散热器
[0009]本实用新型的有益效果是：第一、第二风道与第一、第二、第三扰流孔道纵横交错形成网状通道结构，且相交处内壁均为三周期极小曲面，气流与散热肋内部通道的接触面积明显增大，散热肋热辐射和热对流能力得到提高；第一、第二、第三扰流孔道可引导气流形成全区域扰流效果，能够有效的破坏热边界层，使气流与散热肋内部通道表面的接触更加充分；三周期极小曲面通过复杂但规则的周期重复结构，实现以更小的体积获取更大的散热表面积，增加热量与空气的接触面积，并且曲面的连续拓扑结构使得散热肋具有更加优异的抗振动、抗冲击性能，还具有气流阻力小的特点；在垂直于热流方向上的横截面积增大，提高了热传导能力；上述各种因素综合作用提高了散热效率。
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Figure CN224887750U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of heat sink technology, and in particular to a TPMS-type circular through-flow air-cooled heat sink rib and heat sink. 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. Utility Model Content
[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 TPMS-type circular through-flow air-cooled heat dissipation rib and heat sink.
[0004] This utility model provides the following technical solution: a TPMS-like circular through-flow air-cooled heat dissipation 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 a first air duct disposed in the middle of the heat dissipation cell and four C-shaped slots disposed at the four corners of the heat dissipation cell. On the plane formed by the Y-axis and Z-axis, any four adjacent C-shaped slots of the heat dissipation cell form a second air duct. Both the first air duct and the second air duct extend along the X-axis. The heat dissipation cell also includes a first turbulence channel extending along the Z-axis and two U-shaped grooves, and the U-shaped grooves of any two adjacent heat dissipation cells in the X-axis direction form a second turbulence channel. The heat dissipation cell also includes a third turbulence channel extending along the Y-axis; The first, second, and third turbulence channels all intersect with the first and second air ducts, and the inner walls of the intersections are all three-period minimal curved surfaces.
[0005] Preferably, the cross-sections of the first air duct, the second air duct, the first turbulence channel, the second turbulence channel, and the third turbulence channel are all circular or elliptical.
[0006] Preferably, the two U-shaped grooves are symmetrical about the central axis of the heat dissipation cell.
[0007] Preferably, the two third turbulence channels are symmetrical about the central axis of the heat dissipation cell, one of the third turbulence channels intersects with two C-shaped grooves at one end of the heat dissipation cell on the Z-axis, and the other third turbulence channel intersects with two C-shaped grooves at the other end of the heat dissipation cell on the Z-axis.
[0008] A heat sink includes a heat sink substrate and heat sink ribs disposed on the heat sink substrate, wherein the heat sink ribs are TPMS-type circular through-flow air-cooled heat sink ribs.
[0009] The beneficial effects of this utility model are as follows: The first and second air ducts, together with the first, second, and third turbulence channels, form a mesh channel structure, and the inner walls at the intersections are all three-period minimal curved surfaces. This significantly increases the contact area between the airflow and the internal channels of the heat dissipation ribs, thereby improving the heat radiation and convection capabilities of the heat dissipation ribs. The first, second, and third turbulence channels can guide the airflow to form a full-area turbulence effect, effectively disrupting the thermal boundary layer and allowing for more thorough contact between the airflow and the surface of the internal channels of the heat dissipation ribs. The three-period minimal curved surfaces, through a complex but regular periodic repeating structure, achieve a larger heat dissipation surface area with a smaller volume, increasing the contact area between heat and air. Furthermore, the continuous topology of the curved surfaces gives the heat dissipation ribs superior vibration and impact resistance, as well as low airflow resistance. The increased cross-sectional area perpendicular to the heat flow direction improves heat conduction. The combined effect of these factors improves heat dissipation efficiency. Attached Figure Description
[0010] Figure 1 A three-dimensional diagram of one embodiment of a heat dissipation rib.
[0011] Figure 2 A partial enlarged top view of one embodiment of the heat dissipation rib.
[0012] Figure 3 A front view of one embodiment of the heat dissipation rib.
[0013] Figure 4 A side view of one embodiment of the heat dissipation rib.
[0014] Figure 5 A three-dimensional diagram of one embodiment of a heat dissipation cell.
[0015] Figure 6 This is a front view of one embodiment of a heat dissipation cell.
[0016] Figure 7 This is a side view of one embodiment of a heat dissipation cell.
[0017] Figure 8 This is a top view of one embodiment of a heat dissipation cell.
[0018] Figure 9 This is a temperature distribution diagram for heat dissipation simulation of this utility model.
[0019] Figure 10 The temperature distribution diagram is a simulation diagram of the heat dissipation of the existing straight toothed heat dissipation fins.
[0020] Figure 11 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-first air duct, 12-C-shaped groove, 13-second air duct, 21-first turbulence channel, 22-U-shaped groove, 23-second turbulence channel, 24-third turbulence channel, 25-three-period minimal curved surface, 30-heat dissipation substrate. Detailed Implementation
[0022] The embodiments of this utility model 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 this utility model and are not intended to limit this utility model.
[0023] This invention provides a TPMS-type circular through-flow air-cooled heat dissipation 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 additive manufacturing technology (3D printing) is used to merge multiple heat dissipation cells into an integral structure, so as to achieve precise printing of complex curved surface structures and integral molding.
[0024] Please refer to Figure 5 , 7 The heat dissipation cell 10 includes a first air duct 11 disposed in the middle of the heat dissipation cell and four C-shaped slots 12 respectively disposed at the four corners of the heat dissipation cell. Please refer to... Figure 4 Multiple heat dissipation cells 10 are stacked sequentially along the Y-axis and Z-axis. On the plane formed by the Y-axis and Z-axis, the C-shaped slots 12 of any four adjacent heat dissipation cells form a second air duct 13. Both the first air duct 11 and the second air duct 13 extend along the X-axis. Multiple first air ducts 11 and second air ducts 13 form a... Figure 4 The air duct array shown.
[0025] Please refer to Figure 5 , 8 The heat dissipation cell 10 further includes a first turbulence channel 21 extending along the Z-axis and two U-shaped grooves 22. The first turbulence channel 21 is located between the two U-shaped grooves 22, and intersects with two C-shaped grooves 12 and a first air duct 11 at one end of the heat dissipation cell 10 along the Y-axis. The two U-shaped grooves are symmetrical about the central axis Y1 of the heat dissipation cell, and both U-shaped grooves intersect with two C-shaped grooves 12 at the other end of the heat dissipation cell 10 along the Y-axis. Please refer to... Figure 2 After multiple heat dissipation cells 10 are stacked sequentially along the Y-axis and X-axis, the U-shaped grooves 22 of any two adjacent heat dissipation cells 10 in the X-axis direction form a second turbulence channel 23, and the second air duct 13 intersects with the first turbulence channel 21 and the second turbulence channel 23.
[0026] The heat dissipation cell 10 also includes a third turbulence channel 24 extending along the Y-axis. The number of the third turbulence channel 24 is at least one, as shown in... Figure 5 , 6 In the illustrated embodiment, the two third turbulence channels 24 are symmetrical about the central axis of the heat dissipation cell 10, which is parallel to the Y-axis. One of the third turbulence channels 24 intersects with two C-shaped grooves 12 at one end of the heat dissipation cell along the Z-axis, and the other third turbulence channel 24 intersects with two C-shaped grooves 12 at the other end of the heat dissipation cell along the Z-axis. Please refer to... Figure 3 After multiple heat dissipation cells 10 are stacked sequentially along the Z-axis and X-axis, the second air duct 13 intersects with the third turbulence channel 24, and the two third turbulence channels 24 also intersect with the first air duct 11.
[0027] In summary, the first and second air ducts, along with the first, second, and third turbulence channels, form a crisscrossing mesh-like channel structure. When the airflow enters the heat dissipation rib parallel to the X-axis, the multiple first and second air ducts evenly divide the airflow into multiple streams. As the airflow passes through, it carries away the heat dissipated from each air duct and the inner walls of the turbulence channels that intersect with the air ducts. Compared with the straight-tooth or needle-shaped heat dissipation ribs used in the prior art, the contact area between the airflow and the internal channels of the heat dissipation rib is significantly increased, thereby improving the heat radiation and heat convection capabilities of the heat dissipation rib.
[0028] In existing technologies, when straight-tooth, needle-shaped, or corrugated heat dissipation fins are used, airflow over the fin 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 fins. When airflow passes through the first and second air ducts, the first, second, and third turbulence channels, which intersect with them, disrupt the airflow direction, guiding it to form a full-area turbulence effect. This effectively breaks down the thermal boundary layer, allowing for more thorough contact between the airflow and the surface of the internal channels of the heat dissipation fins, thus improving heat dissipation efficiency.
[0029] Furthermore, the inner walls of the intersections of the first, second, and third turbulence channels with the first and second air ducts are all Triply Periodic Minimal Surfaces (TPMS), eliminating sharp edges and dead corners on the inner walls of the heat dissipation ribs. Through a complex yet regular periodic repeating structure, a larger heat dissipation surface area is achieved in a smaller volume, increasing the contact area between heat and air. The continuous topology of the curved surfaces also gives the heat dissipation ribs superior vibration and shock resistance. The mesh-like channel structure formed by the crisscrossing of the first and second air ducts and the first, second, and third turbulence channels, combined with the Triply Periodic Minimal Surfaces, also features low airflow resistance, enabling rapid heat removal.
[0030] Preferably, the cross-sections of the first air duct 11, the second air duct 13, the first turbulence channel 21, the second turbulence channel 23, and the third turbulence channel 24 are all circular or elliptical, which are adapted to the three-period minimal curved surface.
[0031] 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. Except for multiple air ducts and multiple turbulence channels, the rest of the heat dissipation cell in this invention is a solid structure. The cross-sectional area 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.
[0032] This utility model also provides a heat sink, including a heat sink substrate 30 and heat sink ribs disposed on the heat sink substrate 30, wherein the heat sink ribs are the above-mentioned TPMS-type circular through-flow air-cooled 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 cross-sectional area of each air duct in the heat dissipation cell, 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 9 , 10 As shown in Figure 11.
[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 60.25℃, the lowest to 30.69℃, and the maximum temperature difference is reduced to 29.56℃. Compared with the heat sink using straight-tooth heat dissipation fins, this invention improves heat dissipation efficiency by 29.47% and temperature uniformity by 46.77%; compared with the heat sink using corrugated plate heat dissipation fins, this invention improves heat dissipation efficiency by 21.7% and temperature uniformity by 34.06%. Therefore, this invention significantly improves heat dissipation efficiency.
[0035] The above describes one or more embodiments of this utility model in a relatively specific and detailed manner, but it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A type of TPMS-like circular through-flow air-cooled heat dissipation rib, 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 a first air duct disposed in the middle of the heat dissipation cell and four C-shaped slots disposed at the four corners of the heat dissipation cell. On the plane formed by the Y-axis and Z-axis, any four adjacent C-shaped slots of the heat dissipation cell form a second air duct. Both the first air duct and the second air duct extend along the X-axis. The heat dissipation cell also includes a first turbulence channel extending along the Z-axis and two U-shaped grooves, and the U-shaped grooves of any two adjacent heat dissipation cells in the X-axis direction form a second turbulence channel. The heat dissipation cell also includes a third turbulence channel extending along the Y-axis; The first, second, and third turbulence channels all intersect with the first and second air ducts, and the inner walls at the intersections are all three-period minimal curved surfaces.
2. The TPMS-type circular through-flow air-cooled heat dissipation rib according to claim 1, characterized in that, The cross-sections of the first air duct, the second air duct, the first turbulence channel, the second turbulence channel, and the third turbulence channel are all circular or elliptical.
3. The air-cooled heat dissipation rib with TPMS-like circular through-flow turbulence as described in claim 1, characterized in that, The two U-shaped grooves are symmetrical about the central axis of the heat dissipation cell.
4. The TPMS-type circular through-flow air-cooled heat dissipation rib according to claim 1, characterized in that, The two third turbulence channels are symmetrical about the central axis of the heat dissipation cell. One of the third turbulence channels intersects with two C-shaped grooves at one end of the heat dissipation cell on the Z-axis, and the other third turbulence channel intersects with two C-shaped grooves at the other end of the heat dissipation cell on the Z-axis.
5. 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 TPMS-type circular through-flow air-cooled heat dissipation rib as described in any one of claims 1 to 4.