Home Theater System DC Fans

The types of DC cooling fans are:

1. Mixed flow: It has the above two airflow modes.

2. Axial flow: the direction of the airflow outlet is the same as the direction of the axis.

3. Centrifugal type: the airflow is thrown out along the blades by centrifugal force.

Second, the composition of the DC cooling fan: fan frame, Fan Blade, bearing, PCB control circuit, drive motor.

4. Selection of plastic material and color of DC cooling fan frame and fan blade:

1. Fan frame + fan blade: black PBT material (plastic thermal deformation temperature 230℃)

2. Fan frame + fan blade: transparent for PC raw material (plastic thermal deformation temperature 120 ℃)

3. Fan frame + fan blade: PBT raw material white (plastic thermal deformation temperature 230 ℃)

4. Speed: Speed refers to the speed at which the fan rotates, usually measured by the number of turns in 1 minute, namely: rpm. The rotational speed is related to the number of turns of the electromechanical winding, the wire diameter, the outer diameter and bottom diameter of the fan blade impeller, the shape of the blade and the bearings used.