At present, there are many types of fans that are seen on the market. Many customers do not know what characteristics of various types of fans are available at the time of purchase. Below we will explain the related contents of centrifugal fans and axial fans.
The main difference between centrifugal fan and axial fan:
According to the pressure level, it is divided into high pressure (15000 ~ 3000Pa), medium pressure (3000 ~ 1000Pa), low pressure (<1000Pa).
According to the installation angle of the blade outlet, the centrifugal fan is divided into forward, radial and backward centrifugal fans. The forward fan is divided into two types: general forward and forward multi-wing fan.
Centrifugal fans are generally composed of an impeller, a casing, a current collector, a motor and a transmission member (such as a main shaft, a pulley, a bearing, a V-belt, etc.). The impeller consists of a wheel, a blade (the number of blades is generally 8 to 16), a wheel cover, and a shaft plate. The casing consists of a volute, side plates and legs.
The forward multi-blade fan is one of the forward fan. It has high pressure coefficient, large flow coefficient and low noise. It has many blades (generally 40-80), the blade is narrow, and the forward multi-wing fan is special. Suitable for use in air conditioning systems.
The general centrifugal fans in the market are mostly "three-in-one" fans designed by the joint design team, such as 4-72, 4-73, 5-47, 5-48, 9-19, 9-26 and other products.
2. Axial fan
The axial flow fan is divided into high pressure (500 ~ 5000Pa) and low pressure (<500Pa) according to the pressure. The low pressure is mainly used for ventilation and ventilation in general places.
The axial flow fan is generally composed of an impeller, a casing, a current collector and a motor. The impeller is composed of a blade and a hub, and the casing is composed of a wind cylinder, a frame plate and a bracket.
The market varieties mainly include T30, T35, T40 (work row), CDZ, SF, DZ and so on.