Boiler Backward Curved Blower Color Custom Silent Centrifugal Fan

Backward curved boiler centrifugal fan silent centrifugal fan

Debug method:
Centrifugal ventilation fans is a complex structure of equipment, mainly consists of air inlet, air valve, impeller, motor, air outlet. In different states, the effect of centrifugal fan is not the same. Therefore, the effect of the centrifugal fan will be affected when the operation of different parts is different. To adjust the centrifugal fan to the best condition, we can start from many aspects.

1. Centrifugal fans and blowers allow full voltage starting or step-down electric, but it should be noted that the current when full voltage starting is about 5-7 times the rated current, step-down starting torque is proportional to the voltage square, when the power grid capacity is insufficient, step-down starting should be used.

2, centrifugal fan in the test run, should carefully read the product instructions, check whether the wiring method is consistent with the wiring diagram; It should be carefully checked whether the working voltage of the fan power supply meets the requirements, whether the power supply is missing phase or in phase, and whether the capacity of the electrical components meets the requirements.

3, The number of people during the test is not less than two, one person to control the power supply, one person to observe the operation of the fan, found abnormal phenomenon immediately stop inspection; First check whether the rotation direction is correct; After the centrifugal fan starts to run, it should be checked immediately whether the operation current of each phase is balanced and whether the current exceeds the rated current. If there is abnormal phenomenon, it should be stopped for inspection. After running for five minutes, stop the fan and check whether there is any abnormal phenomenon. After confirming that there is no abnormal phenomenon, start the fan.

4, double speed centrifugal fans and blowers test, should first start low speed, check whether the rotation direction is correct; When starting high speed, the fan must be stationary before starting, in order to prevent high speed reverse rotation, which may cause switch trip and motor damage.

5. When the ventilation exhaust fan reaches the normal speed, the input current of the fan should be measured whether it is normal. The operating current of the centrifugal fan cannot exceed its rated current. If the operating current exceeds its rated current, check whether the supplied voltage is normal.

6. The motor power required by the ventilation exhaust fan refers to the large power required when the inlet is fully open for the centrifugal fans and blowers and the wind chassis under certain working conditions. If the air inlet is fully open for operation, the motor is in danger of damage. It is better to close the valve on the inlet or outlet pipe of the fan during the test run, and gradually open the valve after operation until the required working condition is reached, and pay attention to whether the operation current of the fan exceeds the rated current.

In strict accordance with the above debugging methods of centrifugal fan debugging, the efficiency of centrifugal fan can reach more than 98%.

  Key Features 

• Impeller diameter: 30~3500 mm 
• Speed of mainshaft: 960~2900 rpm
• Pressure range: 705~25425 Pa
• Flow range: 3297~723305 m3/h
• Air Temperature: 20~1000 Celsius degree

• Material: Cast Iron, Carbon Steel, Stainless Steel.

• Efficiency: 70%-90%