Currently, there are various structural forms of finned heat sinks, but basically, the entire fin structure is an integrated structure, with each fin being independent and having different heat levels. The integrated design is indivisible and has a unified structure, but the finned heat sinks are independent of each other, lacking interconnection, and the air does not circulate, which is not conducive to heat dissipation. Therefore, it is necessary to improve the structure of the heat sink fins. Below is an understanding of the technical implementation of finned heat sinks. The finned heat sink adopts a 3360 fin structure that includes a rectangular heat dissipation substrate. A U-shaped integrated rectangular fin is welded onto the rectangular heat dissipation substrate, and multiple through holes that penetrate all fins are longitudinally arranged on this fin, with heat pipes inserted through each through hole. As a preferred method, there are two through holes and embedded heat pipes in the finned heat sink. As a further improvement measure, multiple longitudinal cooling grooves are arranged on the heat dissipation base plate. At the bottom of the fins, several accommodating grooves suitable for the cooling grooves are arranged longitudinally, with both the cooling grooves and accommodating grooves being four in number. The beneficial effect is that there is sufficient interconnection between each fin, allowing air to circulate fully within the fins, which is advantageous for heat dissipation. The structure of the finned heat sink features a rectangular heat base, on which a U-shaped integrated rectangular fin is welded. Multiple through holes that penetrate all fins are arranged longitudinally on this fin, with heat pipes inserted through each through hole. There are two through holes and embedded heat pipes in the finned heat sink. The number of heat pipes inserted through these through holes can be appropriately adjusted based on the size of the heat sink fins and the diameter of the installed heat pipes. By using two heat pipes, there is sufficient connection between each fin, allowing air within the fins to circulate fully through the internal passage of the heat pipes, facilitating better heat dissipation and achieving improved cooling performance. As a further improvement measure for the finned heat sink, multiple accommodating grooves suitable for the cooling grooves are arranged longitudinally at the bottom of the fins. By aligning the fins with the accommodating grooves to form longitudinal through grooves at the bottom of the fins and providing a completely open opening in the U-shaped middle space of the fins, air at the bottom of the fins can smoothly circulate with air on the cooling floor through these longitudinal through grooves.

The following is a brief introduction to finned heat sinks led by me. Finned heat sinks are commonly used in our LED lighting fixtures. Why? Firstly, they are cost-effective, and secondly, they are easy to process. There are also variants of finned heat sinks, which strictly speaking also belong to the category of finned heat sinks. I will discuss the materials I have encountered with finned heat sinks (I will not mention other composite materials as they are too extensive). The materials include aluminum, followed by iron, and then copper. Copper is rarely used due to its high cost, which manufacturers do not allow. There are two types of processes: forging and extrusion. Examples will be provided below. Forging process: The forging process involves heating aluminum blocks and filling molds under high pressure. Its advantages include a fin height of over 50 mm and a thickness of less than 1 mm, allowing for a large heat dissipation area within the same volume. Forging can easily achieve good dimensional accuracy and surface finish. However, due to the low plasticity of metals during forging, cracking can easily occur during deformation, requiring high resistance to deformation and large tonnage (over 500 tons) forging machines, which leads to high equipment and mold costs, resulting in very high product costs. Extrusion process: Aluminum has been used in the heat sink market for a long time due to its softness and ease of processing. Simply put, aluminum extrusion technology involves heating aluminum ingots at high temperatures, allowing molten aluminum to flow through a grooved extrusion die under high pressure to create rough heat sink blanks. These blanks are then cut and slotted to form the heat sinks we often see. Aluminum extruded fins are low in cost and have a low technical threshold. However, due to material limitations, the ratio of thickness to length of the fins cannot exceed 1:18. It is difficult to increase the heat dissipation area within limited space, resulting in poorer heat dissipation performance for aluminum extruded fins. From the above, we can see the differences between the two types of heat sink structures. Extrusion is relatively simple, while die casting can create complex shapes. Of course, we should not only judge the quality of heat sinks based on their type. We should choose those with a high cost-performance ratio rather than just opting for the best ones. In the end, the effect remains the same. Isn't that a waste? Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in Wanjiang Industrial City, Dongguan City, with very convenient transportation. The company was established in 1997 and has rapidly developed over several years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters with fragrant flowers and an elegant environment where work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and audio equipment, and anodizing processing. Our company integrates mold design, development, and manufacturing with strong technical capabilities and advanced machining and production equipment; we have rich experience in hardware product manufacturing; we possess sufficient capacity for hardware product processing and are one of the fastest-growing hardware product factories in Dongguan. The operators of the company focus on the future by actively learning advanced management practices and introducing advanced technologies while emphasizing talent skill development. The company has fully established an ISO9001:2015 quality management system and an ISO14000:2015 environmental management system. In 2018, our company was the first in the industry to pass safety production standardization certification. We adhere to the principle of "customer-centricity, continuous improvement, excellence, total quality management by all employees, and timely delivery" to meet customers' growing demands for quality and technology while providing high-quality services at low costs to win customer satisfaction and praise. We firmly believe that our quality can ensure your 100% satisfaction and that our products can give you 100% peace of mind. We look forward to long-term cooperation with you to create a better future together.

Needle fin heat exchangers are a good idea, but they are not万能的, and their usage conditions are also limited. Heat exchangers for thermal simulation are essential components, and their performance should be well understood, especially for plate-type heat exchangers. We all know that the heat dissipation performance of plate heat exchangers is related to the height, thickness, spacing of the fins, and the thickness of the base plate. However, as the thickness of the fins increases, the spacing decreases, and the thickness of the base plate increases, the performance of the heat exchanger initially improves rapidly, then increases slowly, and eventually decreases. Therefore, reasonably controlling the thickness of the fins, spacing, and base plate thickness is key to designing heat exchangers; it is not a one-size-fits-all optimization but should be adjusted based on actual products. Based on the above understanding of plate-type heat exchangers, some believe that needle fin heat exchangers have inherent advantages. Because in the heat exchange equation Q=hA(T1-T2), the larger the area of the heat exchanger, the stronger its heat dissipation capacity. The design idea of needle fin heat exchangers is to create as much heat exchange area as possible within a given volume and to adapt to different airflow directions. The question is, is having as much heat exchange area really effective? For needle fin heat exchangers, only the surface area aligned with the airflow can contact moving air, while the surface area perpendicular to the airflow can only contact stagnant air or rotating airflow; this part of the surface area cannot carry away much heat. Therefore, under the same spacing of finned heat exchangers, simply breaking up plate fins will not increase heat dissipation; in fact, it may worsen thermal performance. If this approach does not work, then can we find a way to increase fin density to increase the effective surface area of the heat exchanger? Indeed, due to manufacturing limitations, plate fin heat exchangers cannot have too dense a pitch. While needle fin heat exchangers can increase fin density, one should not overlook parameter h. After increasing density, air flowing between two fins will interfere with each other and collide, squeezing into a narrow flow between two fins and creating turbulence. In this case, the heat transfer coefficient h will be discounted, and thermal performance may not necessarily improve.

Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in the Wanjiang Industrial City of Dongguan, with very convenient transportation. The company was established in 1997 and has rapidly developed over the years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters, with fragrant flowers and an elegant environment, and work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and speakers, and anodizing processing. The company integrates mold design, development, and manufacturing, with strong technical capabilities and advanced machining equipment.

Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in the Wanjiang Industrial City of Dongguan, with very convenient transportation. The company was established in 1997 and has rapidly developed over the years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters, with fragrant flowers and an elegant environment, and work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and speakers, and anodizing processing. The company integrates mold design, development, and manufacturing, with strong technical capabilities and advanced machining equipment.

Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in the Wanjiang Industrial City of Dongguan, with very convenient transportation. The company was established in 1997 and has rapidly developed over the years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters, with fragrant flowers and an elegant environment, and work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and speakers, and anodizing processing. The company integrates mold design, development, and manufacturing, with strong technical capabilities and advanced machining equipment.