Technical implementation methods of finned heat sinks
Release time:
2022-03-25 17:16
Source:
www.winasia.cn
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.
Currently, there arefin heat sinkThe structural forms are diverse, but basically the entire fin structure is an integrated structure, with each fin being independent and having different heat levels. It is molded as a whole, indivisible, with a unified structure. The fin 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. Let's understand the technical implementation of the fin heat sink below.
The fin heat sink adopts a 3360 fin structure that includes a rectangular heat dissipation substrate. It is welded on the rectangular heat dissipation substrate with a U-shaped integrated rectangular fin. There are multiple through holes that penetrate all the fins longitudinally on this fin, and heat pipes are inserted through each of these through holes.
As a preferred method, both the through holes and the embedded heat pipes in the through holes are two. As a means of further improvement, multiple longitudinal heat dissipation grooves are set on the heat dissipation base plate. At the bottom of the fins, there are multiple accommodating grooves suitable for the said heat dissipation grooves along the longitudinal direction, with both the heat dissipation grooves and accommodating grooves being four in number. The beneficial effect is that there is sufficient interconnection between each fin, and air inside the fins circulates fully, which is conducive to heat dissipation.
The structure of the fin heat sink has a rectangular heat base, on which U-shaped integrated rectangular fins are welded. There are multiple through holes that penetrate all fins longitudinally on this fin, and heat pipes are inserted through each of these through holes.
Both the through holes of the fin heat sink and the embedded heat pipes in these through holes are two. The number of heat pipes inserted through these through holes can be appropriately adjusted according to the size of the heat sink fins and the diameter of the installed heat pipes. By using two heat pipes, each fin is fully connected, and air inside the fins circulates fully through the internal passage of the heat pipes, facilitating better heat dissipation.
As a means of further improvement for the fin heat sink, multiple accommodating grooves suitable for said heat dissipation grooves are set along the longitudinal direction at the bottom of the fins. By aligning the fins with 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 this longitudinal through groove.
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How much do you know about finned heat sinks?
The characteristics of finned heat sinks are that the fins break through the original proportional limitations, resulting in good heat dissipation effects, and different materials can be used to make the fins. The drawbacks are also quite obvious, as the heat sink and the base are bonded with thermal paste and solder, which can cause interface resistance issues that affect heat dissipation. To improve these shortcomings, two new technologies have been applied in the field of heat sinks.
Introduction to the characteristics of finned heat sinks.
The finned heat sink is a device used for electronic components that are prone to heating in electrical appliances. It is made of aluminum alloy, yellow or bronze, and comes in plate, sheet, or multi-sheet shapes. For example, the CPU in a computer requires a considerable size, and the power tubes, line tubes, and amplifier tubes in televisions all need to dissipate heat. Typically, a layer of thermal grease should be applied to the contact surface of the electronic components to more effectively conduct the heat generated by the components, which is then dissipated into the surrounding air.
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.
Introduction to finned heat sinks
The finned heat sink primarily achieves heat dissipation through conduction, involving a medium heat sink that is in direct contact with the processor. After absorbing heat, the heat sink dissipates it through convection. In the convection heat dissipation process, the heat dissipation area is mainly determined by the surface area of the heat dissipation fins. The larger the surface area, the better the heat dissipation effect. The smaller the surface area, the worse the heat dissipation effect.
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