Fans can be classified into several types according to the material used, such as iron shell fans (ordinary fans), glass fiber reinforced plastic fans, plastic fans, aluminum fans, stainless steel fans, etc

Fans can be classified into centrifugal type, axial flow type, diagonal flow type (mixed flow type) and cross flow type according to the direction of gas flow.

(1) Centrifugal fan. The air flow enters the impeller of the fan axially and flows mainly along the radial direction. This type of fan is made according to the principle of centrifugal action, and its products include centrifugal fan, centrifugal blower and centrifugal compressor.

(2) Axial flow fan. The airflow enters the impeller of the fan axially and flows approximately along the axis on the cylindrical surface. Such fans include axial fans, axial blowers and axial compressors.

(3) Rotary fan. Use the rotor rotation to change the air chamber volume to work. Common varieties include Roots blower and rotary compressor.

Fans can be divided into axial flow fans, centrifugal fans and diagonal (mixed flow) fans according to the flow direction after the airflow enters the impeller.

Fans are divided into press in local fans (hereinafter referred to as press in fans) and flame-proof local fans (hereinafter referred to as draw out fans) where the flame-proof motor is placed outside or in the flow channel and the flame-proof motor is placed in the explosion-proof sealing chamber.

Fans can also be divided into single-stage, two-stage or multi-stage pressurizing fans according to the form of pressurization. For example, 4-72 is single-stage pressurization, and high-end fan is multi-stage pressurization fan.

Fans can be divided into axial flow fans, mixed flow fans, roof fans, air conditioning fans, high-temperature and humidity resistant fans, etc.

Fan can be divided into negative pressure fan, low pressure fan, medium pressure fan and high pressure fan according to pressure.

According to the outlet pressure (pressure rise), it can be divided into: ventilator (≤ 15000 Pa), blower (15-350000 Pa) and compressor (≥ 350000 Pa).

Huada GKF (KY) series high temperature axial flow fan dedicated to tobacco baking This high temperature and high humidity fan is designed for tobacco baking. The motor adopts class F and class H insulation. The fan uses a new four arc aluminum blade. The angle of the blade can adjust the air volume according to user needs. Compared with the right angle blade, it has significant advantages such as large air volume, high efficiency and energy saving. It is widely used in high temperature and high humidity places such as tobacco baking.