Mixed-flow fan, pipeline fan is a new type of ventilation products, can be connected to different caliber pipes for air extraction or air supply, replacing the traditional ventilation equipment. There is a lot of specialized knowledge about performance, so we must be very patient to introduce, so that customers fully understand the advantages of mixed-flow fans, pipe fans. The fan has no vibration and the dynamic balance value is less than 0.17g. Only such a standard value can ensure the superior quality of the fan. For example, the pipeline fan uses GDF200-GDF315 for the imported metal impeller, and the GDF100-GDF160 impeller is poured with PP plastic according to the airfoil. It is characterized by strong rigidity, high temperature resistance, environmental protection, large air volume, and can reduce noise to a certain extent.

Characteristics of mixed flow fan and pipeline fan

1. The control parameters of the pipeline fan are air volume, total pressure, efficiency, noise, motor power, etc.
2. According to the physical and chemical properties of the gas to be transported, choose different uses of the fan. Such as conveying clean air, industrial ventilation, restaurant ventilation, large hospital waiting room ventilation, should choose to use energy-saving permanent magnet brushless fan and integrated motor controller mixed-flow fan EC motor fan or mixed-flow fan; To transport flammable and explosive gases, explosion-proof fans should be selected; Corrosion-resistant fans should be selected for conveying corrosive gases.
3. When selecting the fan, the air leakage loss of the pipeline system, calculation error, and the negative deviation of the actual air volume and air pressure of the fan should be considered. Generally, the safety factor of the air volume is 1.05 ~ 1.1 and the air pressure is 1.10 ~ 1.15. However, it is not too large to prevent the fan from running in the low efficiency area for a long time.
4. Pay attention to the matching relationship between pipe network resistance characteristics and fan characteristics. In order to make the ventilator run stably, the ventilator should be made to work near its highest efficiency point, and the working point of the ventilator is located on the right side of the peak pressure point in the performance curve (that is, the high air volume side, and generally located at 80% of the peak pressure).
5. For the ventilation system with noise reduction requirements, the ventilator with high efficiency and low impeller circular speed should be selected first, and the ventilator should work near the highest efficiency point. According to the propagation mode of noise and vibration generated by the ventilation system, corresponding measures should be taken to reduce sound and vibration.
6. The duct ventilator changes the shape of the blade, so that after the air enters the fan, it has both partial axial flow and partial centrifugal effect, so its performance is between the axial flow fan and the centrifugal fan.
7. Duct fan can provide medium air pressure and medium air volume, which is more suitable for ventilation systems in high-rise civil buildings.