Tell the secret behind the centrifugal fan

The centrifugal fan is mainly composed of a stator and a rotor. The stator mainly includes a control circuit, a bearing, and a coil. The rotor consists of fan blades, magnets and shafts.

Bearings can be divided into oil-containing and hydraulic bearings, the most common ones are ball bearings, and the longevity ones are ball bearings. Others include Laifu and fluid dynamic bearings, nano-ceramic bearings, magnetic suspension bearings, and pneumatic spherical bearings.

There are many types of centrifugal fan bearings, each with its own characteristics. Let's talk about common oil shafts and ball bearings.

Oil-impregnated bearings are sleeve bearings that use sliding friction and use lubricating oil as a lubricant and drag reducer. Although the noise is low, the manufacturing cost is also low, but the wear is serious, and the service life is far behind the ball bearing. Moreover, after a long time of use, the lubricating oil will gradually volatilize due to the oil seal, and dust will also enter the bearing, which will cause the fan to slow down and increase noise.

The ball bearing changes the friction method of the bearing and adopts rolling friction. This method more effectively reduces the friction between the bearing surfaces, effectively improves the service life of the centrifugal fan bearing, and therefore extends the service life of the radiator. The disadvantage is that the process is more complicated, which leads to higher costs and higher operating noise.

The wind pressure of the centrifugal fan should be large

Simply put, the wind pressure is the pressure of the wind. The greater the wind pressure, the greater the force of the wind, which makes it easier to blow through the chassis punching, dust screen and other components. The air volume can be understood as the amount of air flow through the fan at the same time. At the same time, more airflow can be exchanged to improve the heat dissipation effect.

The inclination angle of the fan blades and the blade curvature will affect the wind pressure value of a fan to a large extent. The larger the blade inclination angle and curvature value, the greater the wind pressure provided at the same speed. This centrifugal fan is particularly suitable for use in the front of the case as an intake fan. The air outside the chassis can be blown into the chassis through numerous obstacles more quickly.

The gentle inclination angle and curvature of the blades of the centrifugal fan blades, as well as the design of a larger number of blades, allow each blade to contact a larger area of ??air, so that more airflow can pass at the same time. In terms of appearance alone, most centrifugal fans with large air volume are characterized by a larger number of blades and a gentler blade tilt angle.

Shenzhen Ruianpu Electronics Co., Ltd. is a professional fan manufacturer with 20 years of R&D, production and sales experience. Main business: cooling fan, DC fan, AC fan, silent fan, centrifugal fan, blower and other full range of heat dissipation and ventilation products as an integrity enterprise, the series of cooling fan products have obtained UL, CUL, CE, CCC, ROHS, etc. International Certification.

Shenzhen Ruianpu Electronics Co., Ltd. was established in 2000. For 20 years, it has focused on R&D, manufacturing, and sales of DC AXIAL FAN, AC AXIAL FAN, CENTRIFUGAL FAN, and blower ( BLOWER), AC to DC fan (EC FAN), DC motor (DC MOTOR), AC to DC (EC MOTOR) motor and other full series of cooling and ventilation products as a whole series of integrity enterprises.