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The Influence of 110V input power supply Fan Vortex on Heat Dissipation(4)


AC-DC power module

●The design is simple. Power is available with just one power module, with a few discrete components. ● Shorten the development cycle. The module power supply generally has a variety of input and output options. Users can also repeatedly stack or cross stack to form a building block combined power supply to achieve multiple input and output, which greatly reduces the prototype development time.
●Change is flexible. If the product design needs to be changed, simply convert or parallel another suitable power module.

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 110V input 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 control in the on-board DCDC supply section.