A Heat pipe Assembly heat sink is a heat dissipation device that applies the principle of heat pipes, generally composed of a heat dissipation substrate, heat pipes, and heat sinks welded together. It can solve the heat dissipation problem caused by limited space or excessive heat concentration, and overcome the contradiction between heating power and effective heat dissipation capacity that traditional heat dissipation modes cannot overcome..

Heat pipe is a type of heat transfer element, with a heat transfer efficiency that can reach several tens of times that of metal. It is composed of three main components: a sealed shell, working fluid, and capillary structure. The working fluid absorbs heat and vaporizes from the higher temperature side, while the saturated gas releases heat and condenses towards the lower temperature side. The working fluid changes phase within the application temperature range, and the casing keeps the working fluid of the heat pipe vacuum sealed to achieve continuous heat transfer for decades.

ü Good thermal conductivity

Strong thermal conductivity, relatively small thermal resistance, 100-1000 times that of copper pipes of the same size, reversible heat transfer direction, and can become the evaporation and condensation ends regardless of any end.

ü Wide application range

Suitable for a wide temperature range, from low temperature -243C to high temperature>1000C. And with a small temperature difference, it transports a large amount of heat.

ü High compatibility:

Simple and compact structure, light weight, small size, and easy maintenance. By using heat pipe technology, satisfactory heat dissipation can be achieved even without the need for fans or with low speed and low air volume motors, making it suitable for scenarios with high-power heat dissipation and low noise requirements. With the continuous improvement of heat pipe processing technology, its reliability, safety, and durability will be further improved, while the cost and price will also be further reduced.

The heat transfer performance of heat pipes is indeed very powerful, but to better play its role, it still needs to rely on the precise matching of the basic modules, fins, and other components.

ü Heat pipe selection: Heat pipes with different capillary structures have certain differences in heat transfer performance. In practical applications, forming processes such as bending and flattening need to be carried out to meet the heat dissipation needs of different heat sources. In addition, the diameter, length, and assembly direction of heat pipes can also affect their heat transfer performance.

ü Heat sink production and assembly: usually paired with heat pipes, stamped and toothed heat sinks are used. The thickness, length, spacing, arrangement of heat sinks, connection process between Fin and heat pipes, penetration of Fin, reflow soldering, etc. all affect the overall heat dissipation performance.

ü Module welding: The substrate, heat pipe, and heat sink are finally combined by welding. The flatness of the substrate, the connection between Fin sheets and the substrate and heat pipe, and the welding between heat pipes and substrate will all generate additional thermal resistance.

ü High power heat dissipation requirements, ideal choice for limited space, low noise, and environmentally friendly scenarios.

ü The engineering decision for the best solution for heat sinks generally depends on cost and performance. Heat pipe module heat sinks can be assembled and welded from heat pipes of different structures, Fin sheets of different processes, and substrates of different materials. Therefore, under the constraints of different application scenarios and working conditions, the cost range of a single heat dissipation module is very wide.

 ü Walmate ready to provide professional and more economical opinions based on your specific application scenario and demand scale.