The basic principle of choosing an axial fan

　　

　　We have also talked plenty about the common knowledge connected with axial fans. Then let us discuss the principle of selecting axial supporters. Please see the detailed summary below:

　　1 Before selecting any fan, you should know that production and product quality status of domestic ventilators, such as the ventilator, the standard and the special use of various products, and understand the present domestic fan market.

　　2 Reported by the physical and chemical properties with the gas transported by the ventilator, pick out the ventilator for different uses. Such as the selection Pipe Fan Manufacturers involving explosion-proof ventilator with explosive and flammable gas, determine the required explosion-proof level requirements to the fan; dust or pulverized coal ventilator needs to be selected for dust discharge or maybe transport of pulverized coal; anti-corrosion ventilation really should be selected for transport of corrosive gas Machine, determine whether the anti-corrosion material consists of FRP or PP; in huge temperature applications, high temperature gas ought to be selected for high temperature gas, and the ambient temperature and also the temperature of the transport gas should be known.

　　3 When there become more than two types of ventilators intended for selection on the ventilator choice function chart, priority should have access to to selecting one with higher power, smaller machine number and also larger conditioning scale. Of course, it can be compared regarding cost performance. Weigh the pros and cons and decide.

　　4 If the diameter in the selected fan impeller is much larger versus the diameter of the original enthusiast, in order to utilize the motor shaft, bearings and bearings, it is crucial to start the motor, the strength from the original components of the fan and also the criticality of the shaft. The velocity is calculated.

　　5 When picking out a centrifugal fan, when the motor power used is below or equal to 75 kW, the valve for starting only is probably not installed. When selecting a centrifugal central heating boiler induced draft fan for high-temperature flue gasoline or air, a start-up valve should be provided to prevent overload while in cold operation.

　　6 For venting systems with noise requirements, the ventilator with high strength and low impeller circumferential speed need to be selected first, and it ought to be operated at *** power place; it should also be based on the noise and vibration transmission method generated by the ventilation system. Sound and vibration diminishment measures. For the vibration reduction measures with the ventilator and the motor, the vibration damping base can be generally selected, and different damping devices are selected reported by the fan device method.

　　7 When selecting a fan, make an effort to prevent the fan from staying connected in parallel or with series. When it is unpreventable, the axial fan should select similar type of fan with a similar function. When series connection is selected, there must be a certain pipe joint between the class ventilator as well as the second stage ventilator.

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