The prospect of energy-saving transformation of centrifugal fan is broad

In recent years, some enterprises in China will be the centrifugal fan conversion energy-saving transformation, that is, in the system installed inverter, remove the original old control system, replace the baffle, valve and other backward adjustment mode. After the use of the inverter, the fan out of the air valve completely closed (gongs fan operating condition) or the inlet valve to the maximum (centrifugal fan operation), the size of the air and wind pressure, completely through the centrifugal fan frequency conversion energy saving to adjust the operating frequency of the motor, thereby regulating the speed of the fan to control, motor operating frequency can be freely adjusted The motor speed also increases or decreases, realizes the stepless speed regulation, the soft start.

Centrifugal fan

As the motor operating frequency of 0 to 50 khz operation, always under the rated power, the motor under the rated frequency, reduce the use of motor current, correspondingly reduced the power of the motor, thereby achieving the purpose of energy-saving. The slip is small in size, low in transfer loss, high in efficiency, hard in character, high in speed control, large in speed range, and less energy-saving in starting and braking.

Anti-corrosion outdoor centrifugal fan
Centrifugal fan frequency conversion energy-saving transformation before, the general regulation of air volume size is to regulate the throttle, baffle, valve opening, blade angle and other ways to carry out, these kinds of adjustment methods increase the throttle loss of the air supply system, the motor is always at the rated speed of operation, its operating efficiency is only 30%-60%, Fan operating point away from its highest efficiency point, at the start of the large impact current, mechanical wear and maintenance costs are also high, and the system slow speed, precision and stability is poor, so not only the power loss, and the system working condition is poor.

The frequency conversion energy-saving transformation of centrifugal fan has the function of soft start, which reduces the impact on the motor and the power grid. The inverter itself has the protection functions of over-voltage, under current, overcurrent, overload and overheating, which can effectively avoid various faults caused by this and can provide fault information in time. Because the centrifugal fan frequency conversion energy-saving transformation can reduce the motor speed, thus reducing the equipment wear, prolong the maintenance cycle and service life of the fan.

The prospect of energy-saving transformation of centrifugal fan is broad