Section design of natural convection heat dissipation profile:
1. The thickness of the thermal conductive layer (substrate) is designed. A good thermal conductive layer thickness can make the heat sink absorb enough heat from the heat source part to quickly transfer it to the surrounding part.
2. Design of radiating teeth (fins). Considering that the temperature boundary is thicker during natural cooling, if the tooth spacing is too small or the tooth thickness is too thick, the thermal boundary layers of the two teeth are likely to cross and affect the convection on the tooth surface. Therefore, in general design, the tooth thickness is approximately equal to 0.2 times the tooth High, the tooth height is approximately equal to 0.5 times the tooth height.
3. The angle of the fins is about 2~3 degrees, which makes the heat transfer ability of the fins to the top faster.
4. Conclusion: The design of suitable heat conduction layer thickness, tooth thickness, tooth height, and tooth pitch can achieve the best heat dissipation efficiency and heat dissipation effect.