The working principle of the fan, the fan is mainly composed of two parts of the stator and the rotor, the stator mainly includes control circuit, bearing, coil. Rotor includes fan, magnet and shaft composed of three parts.

Bearings can be divided into, the most common for the oil, hydraulic bearings, longevity is the ball bearing, there are other blessing and fluid dynamic bearings, nano ceramic bearings, magnetic bearings, spherical ball bearings.
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There are many types of fan bearings, each with its own characteristics. We are talking about common oil shafts and ball bearings.

Oil-bearing is the use of sliding friction sleeve bearings, the use of lubricants as a lubricant and drag reduction agent. Although the low noise, manufacturing costs are low, but serious wear and tear, life than the ball bearing a great gap. And the use of a long time, due to the reasons for the oil seal, the oil will gradually evaporate, and dust will enter the bearing, causing the fan speed slows down, noise increases and so on.

Ball bearings change the friction of the bearing, the use of rolling friction, this way more effectively reduce the friction between the bearing surface phenomenon, effectively enhance the life of the fan bearings, and therefore the radiator life extension. The drawback is that the process is more complex, resulting in cost increases, but also bring higher work noise.


Front and CPU fan pressure to large

The front panel fan in the mainstream chassis is responsible for providing cool air to the chassis, and the rear of the fan is the hard disk cage position where the hard disk is placed. For better cooling inside the chassis. The same reason radiator-intensive fin design in order to blow it, it is recommended that users choose a large wind pressure wind, many players will ask why choose a large wind pressure fan.

In simple terms, the wind pressure is the pressure of the wind, the greater the wind pressure, the greater the strength of the wind, easier to punch the chassis, dust and other parts blowing. And the air volume can be understood as the same time through the fan's air flow size, at the same time, you can exchange more air to enhance the cooling effect.

Fan blade tilt angle and blade curvature of the two factors to a large extent will affect a fan's wind pressure value. The greater the inclination angle and the curvature value of the blade, the greater the wind pressure provided at the same speed. This fan is particularly suitable for use in front of the chassis, as an intake fan to use. Can be the chassis of the air more quickly through heavy obstacles into the interior of the chassis.


Outside the fan air volume

Chassis air duct is to make the air inside the chassis for better circulation, efficient circulation in order to better ensure that the chassis to maintain a stable working environment, the front of the chassis with a large wind pressure fan, better penetrate the hard drive to the chassis internal. For the subsequent punishments, the fan is the air volume is large, so as to allow the inside of the chassis to exclude hot air.

At the same speed, the greater the wind pressure of the fan, then its air volume is smaller, and vice versa. If you want to increase the fan flow and wind pressure, then in addition to fan design, by increasing the speed of the method is relatively simple.

The fan blades ease the angle and curvature of the blades, as well as a greater number of blade designs, so that each blade is exposed to a larger air area, making the air flow through more at the same time. From the appearance alone, most of the large air volume fans have more blade number and more moderate blade tilt angle characteristics.