Introduction to the advantages of finned heat sinks

The finned heat sink primarily achieves heat dissipation through conduction, involving dielectric heat sinks that are in direct contact with the processor. After absorbing heat, it dissipates through convection. During the convection process, the area is mainly determined by the surface area of the fins. Common methods used in the industry include: increasing the number of fins and increasing the length of the fins. One of the reflected data points is the 'thickness ratio', which is the ratio of fin thickness to its height.

　　Fin radiatorIt mainly achieves heat dissipation through conduction, involving dielectric heat sinks that are in direct contact with the processor. After absorbing heat, it dissipates through convection. During the convection process, the area is mainly determined by the surface area of the fins. Common methods in the industry include: increasing the number of fins and increasing the length of the fins. One of the reflected data is the 'thickness ratio', which is the ratio of fin thickness to its height.

The fin radiator plays an important role in dissipating heat. Therefore, it mainly depends on the fins and area, meaning that more fins result in better performance. Additionally, since pipes are inserted between the fins, the fitting process between them also affects thermal conductivity efficiency. Generally speaking, during the cutting process, products with thin and dense fins have better efficiency. Because the fins are dense and have a large area, the so-called 'thermal capacity' is also large. Under the action of fan airflow, effective results are achieved.

When selecting a fin radiator, attention should be paid to the distance between the fins, as a reasonable distance allows for sufficient contact between the metal of the fins and air, ensuring internal and external heat exchange. When two fins are pressed together, they cannot effectively dissipate heat. At the same time, if the spacing between adjacent layers of fins is too small, dust can easily accumulate here, leading to poor ventilation and directly affecting performance. At this time, pressure in this part increases, especially its vapor flow towards the condensation end. After reaching the condensation end, it condenses into liquid while releasing heat and returns to the air through capillary action. The heating end completes a cycle.

The welding method and welding process of fin radiators also have a significant impact on efficiency because thermal conduction needs to be transmitted to the fins through heat pipes, and welding joints play an important role in conduction. Generally speaking, foreign brands have advanced welding processes and high efficiency, which is also a reason for lower efficiency in domestic products. The bottom's role is to timely absorb CPU heat; if its thickness is insufficient or it does not fit tightly with the CPU, it cannot conduct heat away in time, leading to increased temperature. To avoid this situation, a simple method is to thicken the bottom or use a mirror finish. Some products have heat pipes that are directly in close contact with the CPU. This way, heat can be promptly absorbed by the base; even if a small amount accumulates, it can dissipate on its own without causing temperature rise. The thermal conductivity coefficient of heat pipes is over 100 times that of ordinary metals, overall providing good heat dissipation effects, low thermal resistance, long service life, and fast heat transfer.