Convection enhanced heat sink
CN224698136UActive Publication Date: 2026-08-28FOSHAN UNIVERSITY
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Patent Information
- Application Number
- CN202522014267.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-18
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-09-18
AI Technical Summary
Technical Problem
[0004]本实用新型旨在克服上述现有技术的至少一种缺陷(不足)，提供一种对流增强型散热器，用于解决现有的鳍片式被动散热器在性能提升上往往只是被动地增大散热面积，而忽视了对气流组织的主动引导与优化的问题
Benefits of technology
[0025]与现有技术相比，本实用新型的有益效果为：通过设置多个散热单元，每个散热单元包括多个U形散热鳍片，使散热鳍片的过渡部朝向基板中心，开口朝外，用以引导气流冲击中心区域，增强散热器中心区域的对流效果，从而有效降低散热器中心区域的温度。将同一散热单元内的多个U形散热鳍片的夹角设置为不同大小，使相邻两个散热鳍片之间形成宽度不一致的流道，从而改变空气在流道内的流动速度，对气流进行优化，达到加强散热的效果。散热鳍片的过渡部为圆弧形，使气流能够平滑地沿着散热鳍片表面流动，不仅能提升气流效率，还能减少噪音。由于基板中心是热量输入的源头，热量需能快速传导至散热鳍片的其他区域，因此，将散热鳍片在中心区域设置得较薄，而散热鳍片朝外的区域需有较大的热容量和散热面积来进行散热，因此，朝外的一侧设置得较厚。为增加散热鳍片与空间接触的周长和表面积，同时增强散热器内部的空气对流，在散热鳍片的平直部还设置有镂空区域，镂空区域还能减少材料的使用的散热器的整体重量。散热鳍片的高度由基板中心向外逐渐增加，使所有散热鳍片的顶部边缘共同形成一个从中心向外逐渐上升的宏观斜面，从而能更有效地引导气流从中心向外流动，也能更好地接纳从上方吹入的冷却气流，使其更顺畅、更深地穿透散热鳍片阵列。
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Abstract
The utility model relates to the field of radiator, more specifically, it relates to a convection enhanced radiator, including the substrate and a plurality of evenly distributed radiator unit on the substrate, each radiator unit includes a plurality of radiating fins, the radiating fin has the bottom connected to the substrate and the top away from the substrate, the radiating fin is roughly U-shaped, including two flat parts and the transition part of connecting two flat parts, the transition part is towards the center of the substrate and sets up, the opening of the U-shaped faces outward, different radiating fins in the same radiator unit have different angles, and the radiating fin of the smaller angle is nested in the U-shaped angle space formed by the radiating fin of the larger angle, the U-shaped radiating fin guides the airflow impact center area, enhances the convection effect of center area, reduces the temperature of center area, sets up the angle of radiating fin to be different size, makes the flow channel of inconsistent width between adjacent two radiating fins, thereby optimizing the airflow.
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