What is a laptop centrifugal fan and what is a centrifugal fan?

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With the continuous upgrading of industrial products and the rapid development of high-tech industries, centrifugal fans and axial fans are more and more widely used in heat dissipation in industrial products.

First, the principle is different.

1.Centrifugal fan principle: the air flow flows axially into the rotating blade, which is thrown to the outer edge of the impeller under the action of centrifugal force and discharged from the air outlet.

2.Axial fan principle: the gas enters the rotating blade axially and is pressurized and then discharged axially from the other side.

Second, the structure is different.

1. The centrifugal fan is generally composed of an impeller, a casing, a capacitor starter, a motor and transmission parts (such as a spindle, a pulley, a bearing, a V-belt, etc.). The impeller is composed of a wheel disc, a blade (the number of blades is generally 8 16), a wheel cover, and a shaft disk. The chassis consists of worms, side panels, and outriggers.

The centrifugal fan can use forward or backward blades, which is more suitable for the requirements of air volume and pressure. Moreover, the cabinet can be muffled, which has obvious advantages in noise indicators. The motor and the fan are generally connected by shafts.

2. The axial fan is generally composed of fan blades, shells and motors, and the fan blades are divided into metal fan blades or plastic fan blades, and the shells are metal shells and plastic shells. The blade diameter of the axial fan is limited to the diameter of the housing, and the motor is generally in the fan. The axial fan of the metal fan blade is generally an external rotor structure, with high speed, large inertia, high and low temperature, moisture-proof and long-term work in the harsh environment with large dust.

On the other hand, the plastic leaf has an internal rotor structure and generally works in an indoor environment.

Third, the difference between air volume and wind pressure.

1. The centrifugal fan has a high pressure coefficient and a relatively low flow coefficient, which is divided into high pressure (15000 3000pa), medium pressure (3000 1000pa) and low pressure (1000pa) according to the pressure.

2. The axial fan has the characteristics of low pressure and large flow, and is divided into high pressure (500 5000pa) and low pressure (500pa) according to the high and low pressure. Low pressure is mainly used for ventilation and heat dissipation in general places.

Fourth, the difficulty of installation is different.

Centrifugal fans are often installed at the inlet and outlet of air-conditioning units, boiler drums, induced draft fans, etc., and the installation is more complicated. Axial fans are often installed in cabinets, ventilation and heat dissipation, air ventilation and circulation, air ducts or front and end exhaust air ducts at the inlet and outlet of air ducts.

A centrifugal fan system comprises a casing, a plurality of fan blades, a ring wall and a body. The liquid housing has at least one chassis ring located around the perimeter of the housing, and the fan blades are enclosed on the chassis disturbance.