Zhejiang Hangfeng Electromechanical Technology Co., Ltd. specializes in the research, development and manufacture of a variety of rotor fans, centrifugal fans, industrial fans and other integrated products of the professional production plant. Fans contain classifications such as ventilators, blowers and compressors, but not including volumetric blowers and compressors. There are many types of fans, and the common basis for division is the material of the fan, the gas flow direction of the fan, the use of the fan and so on.

Classification of fan materials

The more commonly used material for fans is cast iron, and ordinary fans belong to this type of iron casing fan. Fans also use other materials, such as glass fiber reinforced plastic fans, PVC fans, aluminum alloy fans and stainless steel fans, etc., these materials made of fans have better anti-corrosion, anti-abrasive or high temperature performance.

Classification of fans by gas flow direction

The gas flow direction of the fan refers to the direction of gas flow when the fan is running, if the gas flow direction is the same with the impeller's axis, then it is an axial flow fan, if the gas is centrifugal movement with the impeller's axis as the center, then it is a centrifugal fan. In addition to these two types of fans, the gas flow direction of the division of the fan there are inclined flow fan and cross-flow fan.

Classification of fans by use

Fans can also be categorized into several types according to their uses, such as smoke exhaust fans, air conditioning fans, roof fans, etc. These fans are designed for specialized uses. These fans are designed for specialized purposes, and therefore differ from ordinary fans in appearance, material, function, etc. For example, roof fans can be designed for two-way reversible air supply and exhaust.

Other classifications of fans

Fans can be divided into single-stage pressurized fans, double-stage pressurized fans and multi-stage pressurized fans according to the number of pressurization of airflow, such as Roots fans are typical multi-stage pressurized fans. Fans according to the design of the structure, motor installation position is different, can also be divided into pressure into the fan and extractor fan and other types.