Novel radiator with needle-column-shaped fins in high-density arrangement structure

Abstract

The utility model relates to the technical field of radiators, in particular to a novel radiator with a needle-column-shaped fin high-density arrangement structure, which comprises a substrate, the substrate is provided with at least one heat source contact surface, mounting holes are arranged at corners of the heat source contact surface so as to facilitate fixation, and a plurality of needle-column-shaped fins are arranged on the non-contact surface side of the substrate in a high-density vertical array mode. The cross section of the substrate is polygonal or circular, turbulent flow grooves (preferably V-shaped grooves or trapezoidal grooves) are formed in the top of the substrate so as to increase air turbulence and improve the heat dissipation effect, the projection area of the needle-column-shaped fins accounts for 70%-95% of the total area of the non-contact face of the substrate, the space is utilized to the maximum extent, the needle-column-shaped fins are made of copper alloy, aluminum alloy or metal matrix composite materials, and therefore the heat dissipation efficiency is improved. And the surface of the needle-column-shaped fin is covered with the nano oxide layer, so that the heat-conducting property and the corrosion resistance are enhanced, the needle-column-shaped fin can be arranged in a staggered array or hexagonal close packing manner, and the airflow path is optimized.

Description

Technical Field

[0001] This utility model relates to the field of radiator technology, specifically to a novel radiator with a high-density arrangement of needle-shaped columnar fins. Background Technology

[0002] With the continuous increase in power density of electronic devices and the miniaturization of chip manufacturing processes, heat sinks need to achieve higher heat dissipation efficiency within a limited space. Traditional heat sink designs face the following technical bottlenecks:

[0003] Limitations of fin structure:

[0004] Traditional sheet-like fins: increase heat dissipation capacity by increasing surface area, but their parallel arrangement easily leads to laminar flow of air along a fixed direction, thickening of the boundary layer, and limitation of convective heat transfer coefficient (experiments show that the heat transfer coefficient of laminar flow is only 1 / 3 to 1 / 5 of that of turbulent flow).

[0005] Cylindrical fins: Although they can break some laminar flow by vertical arrangement, the effective heat dissipation surface area per unit projected area is insufficient (usually only accounting for 40%-60% of the substrate area), and it is difficult to fully disturb the uniform airflow.

[0006] Thermal conduction and material limitations:

[0007] Traditional aluminum fins have low thermal conductivity (approximately 237 W / (m·K)), making it difficult to meet the heat flux density requirements (>100 W / cm²) of high-power chips (such as CPUs and GPUs). 2 ).

[0008] Insufficient surface treatment process results in uneven thickness of traditional anodized layers (10-50μm) and low radiative heat dissipation efficiency (emissivity ≤0.6).

[0009] Airflow management and dust control deficiencies:

[0010] Existing heat sinks lack directional airflow design, and airflow easily forms vortices between the fins, leading to increased pressure drop (measured pressure drop can reach 30%-50%). In addition, dust accumulation can clog the gaps between high-density fins, and thermal resistance increases significantly after long-term use.

[0011] Structural strength and installation issues:

[0012] High-density fins are prone to root cracking due to thermal stress during welding or casting (especially slender fins with uniform diameter), and the mounting holes of traditional substrates are located near the heat source area, which can easily lead to fastening failure due to thermal deformation. Utility Model Content

[0013] (a) Technical problems to be solved

[0014] To address the shortcomings of existing technologies, this invention provides a novel heat sink with a high-density arrangement of needle-shaped columnar fins.

[0015] (II) Technical Solution

[0016] To achieve the above objectives, this utility model provides the following technical solution: A novel heat sink with a high-density arrangement of needle-like columnar fins, comprising:

[0017] A substrate having at least one heat source contact surface, and mounting holes are provided at the corners of the substrate;

[0018] Multiple needle-like fins are arranged in a high-density vertical array on the non-contact side of the substrate;

[0019] The cross-section of the needle-like fins is polygonal or circular;

[0020] The top of the needle-shaped fin is provided with a flow-disrupting groove.

[0021] Preferably, the projected area of ​​the needle-like fins accounts for 70%-95% of the total area of ​​the non-contact surface of the substrate.

[0022] More preferably, the needle-like fins are made of copper alloy, aluminum alloy or metal-based composite material, and their surface is covered with a nano-oxide layer.

[0023] Preferably, the needle-like fins are arranged in an alternating array or a hexagonal close-packed array.

[0024] Preferably, the turbulence channel is a V-shaped channel or a trapezoidal channel structure.

[0025] More preferably, the needle-shaped fin has a gradually increasing diameter in the height direction, with the root diameter gradually increasing along the top diameter.

[0026] Preferably, the system also includes a flow guide cover, which covers the periphery of the needle-shaped fins and is mounted on a substrate by bolts. The substrate has a fixing hole located inside the mounting hole, and the bolts pass through the flow guide cover and connect to the fixing hole.

[0027] Preferably, the flow guide is provided with a number of reinforcing ribs, and a flow guide and dustproof net is provided between adjacent reinforcing ribs.

[0028] (III) Beneficial Effects

[0029] Compared with the prior art, this utility model provides a novel heat sink with a high-density arrangement of needle-like columnar fins, which has the following beneficial effects:

[0030] By arranging multiple needle-like fins in a high-density vertical array on the non-contact side of the substrate, the heat dissipation area is significantly increased. The needle-like fins have a polygonal or circular cross-section and a turbulence groove (preferably V-shaped or trapezoidal) at their top, effectively breaking the air boundary layer, enhancing air turbulence, and improving heat dissipation efficiency. The fin projection area accounts for 70%-95% of the total area of ​​the non-contact surface of the substrate, maximizing space utilization.

[0031] The fins are manufactured using copper alloys, aluminum alloys, or metal-based composite materials, and their surface is coated with a nano-oxide layer, which not only improves thermal conductivity but also enhances corrosion resistance. The staggered array or hexagonal close-packed arrangement further optimizes the airflow path, ensuring efficient heat dissipation. The needle-like fins are designed with a gradually increasing diameter along their height, widening from the root to the top, reducing wind resistance and allowing for smoother airflow.

[0032] Furthermore, the design of the air deflector not only protects the internal structure from external environmental influences but also enhances mechanical strength and protection through reinforcing ribs and dust-proof mesh, preventing dust from entering and affecting heat dissipation. The overall structure is robust and easy to install and maintain, suitable for various applications requiring efficient heat dissipation. This design significantly improves heat dissipation efficiency, extends equipment lifespan, and reduces operating costs. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the hexagonal close-packed arrangement of needle-like columnar fins of this utility model;

[0034] Figure 2 This is a schematic diagram of the staggered array of needle-like columnar fins of this utility model;

[0035] Figure 3 This is a schematic diagram of the substrate mounting guide shield of this utility model;

[0036] In the figure: 1. Substrate; 2. Needle-shaped fins; 3. Mounting holes; 4. Fixing holes; 5. Baffle grooves; 6. Flow guide; 7. Reinforcing ribs; 8. Flow guide and dustproof net. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Please see Figure 1-3 This utility model discloses a novel heat sink with a high-density arrangement of needle-shaped columnar fins, comprising:

[0039] The substrate 1 has at least one heat source contact surface, and mounting holes 3 are provided at the corners of the substrate 1;

[0040] Multiple needle-shaped fins 2 are arranged in a high-density vertical array on the non-contact side of the substrate 1;

[0041] The cross-section of the needle-shaped fin 2 is polygonal or circular;

[0042] The top of the needle-shaped fin 2 is provided with a turbulence groove 5.

[0043] This novel heat sink with a high-density arrangement of needle-like columnar fins 2 mainly consists of a substrate 1 and multiple needle-like columnar fins 2 arranged vertically in an array on the non-contact side of the substrate 1. The substrate 1 has at least one heat source contact surface for direct contact with the heat-generating element and is fixed through mounting holes 3 at its corners. The needle-like columnar fins 2 are arranged vertically in a high-density manner on the non-contact surface of the substrate 1, increasing the heat dissipation area and improving heat dissipation efficiency.

[0044] Base plate 1: As the core part of the heat sink, it not only performs the function of transferring heat from the heat source to the fins, but also ensures that the heat sink can be stably installed on the target equipment through the mounting holes 3 and the bolt device.

[0045] Needle-shaped fins 2: These fins are arranged vertically at high density, and their cross-section can be polygonal or circular. They are provided with turbulence grooves 5 at the top, which helps to increase air turbulence and improve heat dissipation efficiency. In a preferred embodiment, the projected area of ​​the needle-shaped fins 2 accounts for 70%-95% of the total non-contact surface area of ​​the substrate 1, maximizing the use of space to enhance the heat dissipation effect.

[0046] Material selection: The needle-shaped fins 2 are made of copper alloy, aluminum alloy or metal-based composite materials, and are covered with a nano-oxide layer to enhance corrosion resistance and thermal conductivity.

[0047] Arrangement: The needle-like fins 2 can be arranged in an alternating array or a hexagonal close-packed array, which helps to further improve heat dissipation efficiency.

[0048] 5. The turbulence channel is designed as a V-shaped or trapezoidal channel structure, which can effectively break the boundary layer, promote airflow, and improve heat dissipation efficiency.

[0049] Gradual diameter: The needle-shaped fin 2 has a diameter that gradually increases from the root to the top in the height direction. This design helps to optimize airflow distribution and reduce wind resistance.

[0050] Shield 6: The additional shield 6 covers the periphery of the needle-shaped fins 2 and is fixed to the base plate 1 by bolts, which enhances the overall structure. The design of the reinforcing ribs 7 and the airflow dustproof mesh 8 not only improves the mechanical strength, but also prevents dust from entering and affecting the heat dissipation effect.

[0051] Working principles of various preferred technical solutions

[0052] High-density arrangement: By optimizing the arrangement density of the needle-shaped fins 2, their projected area accounts for 70%-95% of the total non-contact surface area of ​​the substrate 1, which greatly increases the heat dissipation area and thus improves the overall heat dissipation efficiency.

[0053] Materials and surface treatment: Copper alloy, aluminum alloy or metal-based composite materials are selected and covered with a nano-oxide layer, which not only improves the thermal conductivity of the material, but also enhances its corrosion resistance.

[0054] Arrangement: The arrangement can be either staggered array or hexagonal close-packed array. These two arrangements can achieve the maximum heat dissipation surface area in a limited space while ensuring good air circulation.

[0055] 5. The ...

[0056] Gradual diameter design: The diameter gradually increases from the root to the top, which optimizes airflow distribution, reduces wind resistance, and allows air to pass more smoothly through the gaps between the fins, thus improving heat dissipation efficiency.

[0057] The shroud 6 and its components: The use of the shroud 6 not only protects the internal structure from the influence of the external environment, but also further enhances the stability and durability of the radiator through the design of the reinforcing ribs 7 and the airflow dustproof mesh 8.

[0058] Information Workflow Summary

[0059] Heat conduction: Heat is first conducted from the heat source to the needle-shaped fins 2 through the substrate 1.

[0060] Air turbulence generation: Due to the design of the turbulence groove 5 at the top of the needle-shaped fin 2, turbulence is generated when air flows through it, breaking the air boundary layer and accelerating heat exchange.

[0061] High-efficiency heat dissipation: Thanks to the high-density arrangement of the needle-shaped fins 2, the special material and the gradient diameter design, the heat sink can provide high-efficiency heat dissipation performance in a small space.

[0062] Protective measures: The air guide 6 and its supporting reinforcing ribs 7 and air guide dustproof net 8 not only enhance the mechanical strength of the radiator, but also effectively prevent dust and other impurities from entering, ensuring long-term stable operation. The air guide 6 can be disassembled periodically to clean the dust on the air guide dustproof net 8.

[0063] Installation and maintenance: The heat sink can be easily and quickly installed on the target device through the mounting holes 3 and fixing holes 4 on the substrate 1, and is easy to disassemble for cleaning or maintenance.

[0064] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel heat sink with a high-density arrangement of needle-like columnar fins, characterized in that, include: A substrate (1) having at least one heat source contact surface, wherein mounting holes (3) are provided at the corners of the substrate (1); Multiple needle-like fins (2) are arranged in a high-density vertical array on the non-contact side of the substrate (1); The cross-section of the needle-like fin (2) is polygonal or circular; The top of the needle-shaped fin (2) is provided with a turbulence groove.

2. The radiator with a novel needle-like columnar fin high-density arrangement structure according to claim 1, characterized in that, The projected area of ​​the needle-like fins (2) accounts for 70%-95% of the total area of ​​the non-contact surface of the substrate (1).

3. The radiator with a novel needle-like columnar fin high-density arrangement structure according to claim 1, characterized in that, The needle-shaped fins (2) are made of copper alloy, aluminum alloy or metal-based composite material, and their surface is covered with a nano-oxide layer.

4. The radiator with a novel needle-like columnar fin high-density arrangement structure according to claim 1, characterized in that, The needle-like fins (2) are arranged in an alternating array or a hexagonal close-packed array.

5. A heat sink with a novel needle-like columnar fin high-density arrangement structure according to claim 1, characterized in that, The turbulence channel (5) is a V-shaped channel or a trapezoidal channel structure.

6. The heat sink with a novel needle-like columnar fin high-density arrangement structure according to claim 1, characterized in that, The needle-shaped fin (2) has a gradually increasing diameter in the height direction, with the root diameter gradually increasing along the top diameter.

7. A radiator with a novel needle-like columnar fin high-density arrangement structure according to claim 1, characterized in that, It also includes a flow guide (6), which covers the periphery of the needle-shaped fin (2) and is mounted on the base plate (1) by bolts. The base plate (1) is provided with a fixing hole (4), and the fixing hole (4) is located inside the mounting hole (3). The bolts pass through the flow guide (6) and connect to the fixing hole (4).

8. A heat sink with a novel needle-like columnar fin high-density arrangement structure according to claim 7, characterized in that, The flow guide shroud (6) is provided with several reinforcing ribs (7), and a flow guide dustproof net (8) is provided between adjacent reinforcing ribs (7).

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