The Influence of DC conversion power supply Fan Vortex on Heat Dissipation(3)

The fluid passing through the outlet of the axial flow fan is actually the fluid flowing forward along the axis, so what effect does the actual rotation direction of the fan have on the cooled area inside the power supply?

Under the switching power supply module model, we recalculate the two models by adjusting the rotation direction of the axial fan without changing the mesh division of the model. After the calculation converges, the influence of different fan rotation directions on the heat dissipation of the whole power supply is analyzed by comparing the transition of the flow field and the sectional distribution of the temperature field in the power supply under these two conditions.

●High quality and reliable. Module power supply generally adopts fully automatic production, and is equipped with high-tech production technology, so the quality is stable and reliable.
Wide range of uses: The modular power supply can be widely used in various fields of social production and life such as aerospace, locomotives and ships, military weapons, power generation and distribution, post and telecommunications, metallurgy and mining, automatic control, household appliances, instrumentation and scientific research experiments. In particular, it plays an irreplaceable and important role in the field of high reliability and high technology.

By comparing the two analysis results, we found that during the analysis of this model, the direction of fan rotation has a particularly large impact on the distribution of the flow field and temperature field inside the DC conversion power supply. In terms of flow field, because the rectifier bridge part of the model is relatively low in size and the PFC radiator part is relatively high, in this case, the rotating direction of the fan has a very significant impact on the flow field. When the fan rotates clockwise, the vortex around the rectifier bridge radiator is small, and the flow field is relatively open, which is conducive to the heat dissipation of the rectifier bridge radiator. However, when the fan rotates counterclockwise, there are many vortices around the rectifier bridge radiator, which is not conducive to the heat dissipation of the rectifier bridge radiator. These differences can also be further proved by the temperature field distribution of the switching power supply module supply section.