Double inlet centrifugal fans are ventilation equipment, and their structure, working principle, performance, installation and acceptance, as well as common faults are all key points that users need to understand. Today, I’ll talk about these knowledge points in detail for you, and you should take good notes.
This kind of fan is composed of multiple components such as an electric motor, a blower housing, a rotor, air inlets, an air outlet and an impeller.
The double inlet centrifugal fan utilizes the driving force provided by the electric motor to make the impeller rotate at a high speed. It sucks in air and then pushes the air to the outlet of the fan by virtue of the centrifugal force of the impeller, thus achieving the purpose of air circulation.
- It can effectively improve the efficiency of air circulation and increase the indoor air flow volume, keeping the indoor air fresh all the time.
- It helps to ensure the indoor air quality, reduce the content of harmful gases, and build a solid defense for people’s health and safety.
- It can reduce noise to a certain extent and improve the comfort during use, creating a quiet using environment.
- The installation position should be appropriate. It is most suitable to be 10 – 15 centimeters away from the ground, which can ensure its subsequent stable and efficient operation.
- The outlet of the fan must be properly connected to the exhaust port, and it is necessary to strictly ensure that there is no leakage at the connection part to prevent air leakage and other problems.
- The electric motor should be wired in strict accordance with the requirements indicated in the instruction manual to avoid malfunctions caused by incorrect wiring.
- Before the formal start-up and commissioning, a trial run must be carried out to carefully check whether all operating parameters are within the normal range.
- The motor doesn’t rotate: It is usually caused by reasons such as damaged wires or blown fuses. Therefore, it is necessary to regularly check the wire connections and fuses of the double inlet centrifugal fan, and replace the aged or damaged wires and the blown fuses in time to ensure that the motor can start normally.
- Excessive vibration: It is mainly because the rotating parts inside the fan are unbalanced, resulting in unstable operation. At this time, it is necessary to carry out dynamic balance adjustment on the whole fan so that those rotating parts can operate normally and stably.
- Difficulty in starting: It may be caused by motor failures, insufficient power supply voltage, or the rotor of the induction motor being blocked. At this time, it is necessary to carefully check whether the power supply voltage is normal, clean the blocked air ducts, and ensure that the motor and its control system can operate normally so that the fan can start smoothly.
- Gear fracture: It is mostly caused by damage to the main shaft or bearings of the fan gears. Therefore, it is necessary to strengthen the maintenance of the equipment and replace the old gears, main shafts and bearings and other parts in time to ensure the normal operation of the fan.
There are quite a lot of knowledge points about double inlet centrifugal fans. What has been introduced above is just some basic content. If you want to understand it more deeply, you need to keep learning and constantly accumulate relevant knowledge, and strive to become a professional operator in this industry, so as to better use this kind of fan and ensure that the fan can operate normally and stably all the time.
