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Classification of fans

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Classification of fans

2019-06-11 18:16
  1. Fans can be divided into several types according to the material used, such as iron shell fan (common fan), fiberglass fan, plastic fan, aluminum fan, stainless steel fan, etc.
     
    Fan classification can be divided 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. After the airflow enters the impeller of the fan axially, it mainly flows in the radial direction. These fans are made according to the principle of centrifugal action, and the products include centrifugal fans, centrifugal blowers and centrifugal compressors.
     
    (2) Axial fan. The airflow enters the impeller of the fan axially, flowing approximately in the axial direction on the cylindrical surface. Such fans include axial flow fans, axial flow blowers and axial compressors.
     
    (3) Rotary fan. The rotor chamber is rotated to change the volume of the chamber to operate. Common varieties are Roots blowers and rotary compressors.
     
    The fan is divided into an axial flow fan, a centrifugal fan and a diagonal flow (mixed flow) fan according to the flow direction after the airflow enters the impeller.
     
    The fan is divided into a push-in partial fan (hereinafter referred to as a press-in fan) and an explosion-proof motor placed outside the flow channel or in the flow channel according to the purpose, and the explosion-proof motor is placed in the explosion-proof sealed cavity of the extraction type local fan (hereinafter referred to as the extraction fan) ).
     
    The fan can also be divided into single-stage, two-stage or multi-stage pressure fans according to the form of pressure. For example, 4-72 is a single-stage pressurization, and a high-end fan is a multi-stage pressurized fan.
     
    Fans can be divided into: axial flow fans, mixed flow fans, roof fans, air conditioning fans, high temperature and high humidity fans, etc. according to the purpose.
     
    The fan can be divided into a negative pressure fan, a low pressure fan, a medium pressure fan and a high pressure fan according to the pressure.
     
    According to the outlet pressure (boost), it is divided into: fan (≤ 15,000 Pa), blower (1.5 to 350,000 Pa), compressor (≥ 350,000 Pa).
     
    Huada GKF (KY) series of high-temperature axial flow fans for tobacco baking. This high-temperature and high-humidity fan is designed for tobacco baking. The motor uses F-class and H-class insulation. The fan uses a new four-blade aluminum leaf, wind. The blade angle can adjust the air volume according to the user's 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.

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