Different cooling fan options.mini fans bulk portable

　　1. When choosing a cooling fan, people often compare the wind pressure and air volume. For normal ventilation, the wind pressure and air volume need to overcome the resistance in the ventilation stroke of the cooling fan, and the cooling fan must generate pressure to overcome the air supply resistance. It's wind pressure. The wind pressure mainly depends on the shape, area, height and rotation speed of the fan blade. The faster the rotation speed, the larger the fan blade. The higher the wind pressure is, the better the air duct design of the heat sink can maintain the wind pressure of the fan.

　　2. When choosing a cooling fan, what we need to know is that the more vertical the fan blades of the cooling fan are, the larger the wind section, the greater the air volume generated, and the greater the wind shear noise; Less wind, not to mention heat dissipation. And the number of fan blades and the design of the fan blades will also have a great impact on the air volume and wind pressure. The design of the cooling fan blades has an obvious impact on the performance of a fan. At the same speed, products with excellent blade design can provide greater air pressure and air volume, resulting in better heat dissipation.

　　3. The total volume of air sent or sucked by the cooling fan per minute. When the material of the heat sink is the same, the air volume is the most important indicator to measure the heat dissipation capacity of the air-cooled radiator. That is to say, the larger the fan, the larger the air volume. Therefore, a larger air volume can take away more heat per unit time. If air volume is likened to the power of a weapon's swing, then wind pressure is the sharpness of the weapon. When other conditions remain unchanged, the actual air volume plays a decisive role in the effect of the cooling fan.

　　4. In terms of design, in addition to the general design mentioned above, some cooling fans also adopt some very special designs, which can better meet the needs of users by applying newer technologies and processes. In terms of dust prevention, the cooling fan will be covered with a thick layer of dust on all parts of the air flow after long-term use.

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