The Influence of DC conversion power supply Fan Vortex on Heat Dissipation(1)
The influence of power supply heating is important in terms of conversion compliance, circuit board layout and cooling mode. In DC conversion power supply or electronic system, air cooling is usually used as the cooling mode. Therefore, heat sinks and axial fans are widely used.
A modular power supply is a power supply that can be directly mounted on a printed circuit board and can be used for application-specific integrated circuits (ASICs), digital signal processors (DSPs), microprocessors, memories, field programmable gate arrays (FPGAs) and other Digital or analog loads provide power. Typically, such modules are referred to as load (POL) power supply systems or point-of-use power supply systems (PUPS). Due to the obvious advantages of the modular structure, modular power supplies are widely used in switching equipment, access equipment, mobile communications, microwave communications, optical transmission, routers and other communications fields, as well as automotive electronics, aerospace, etc.
Because the working principle of the axial flow fan is to drive the blades connected with it to rotate Weifang at the given speed of the motor through the operation of the motor, so as to generate a positive pressure difference between the front and back of the blades, and drive the air around the blades to move along the fixed direction of the motor shaft. Therefore, the axial fan has the characteristics of low head and large flow.
Usually, when people choose axial fans, they only consider the above characteristics, ignoring a series of effects caused by the rotation of axial fan blades on the forced flow of air. In fact, the fluid passing through the axial fan does not move in the single direction of the motor axis, and there is also a velocity component on the fan blade section perpendicular to the motor axis. Therefore, Baidu Keyword, the fluid driven by the axial flow fan is actually a moving fluid that rotates forward with the motor shaft as the axis.