Energy-saving axial fan when you start editing, the motor current will be 5-6 times higher than nominal, not only will affect the life of the motor and consume more power. System was designed on the motor selection will leave some margin, the speed of the motor is fixed saving axial fan, but in actual use, sometimes you want to run at a lower or higher speed, frequency transformation is therefore very necessary. Drive motor soft start can achieve by changing the input voltage frequency purpose waterproof device axial fan speed to save energy, and give equipment to provide overcurrent, overvoltage, overload protection. And centrifugal fan air flow and the difference between the axis is parallel to the axial fan called, (such as firefighting exhaust fan) and vice versa is a centrifugal fan (such as fan coil fan). Axial fans and centrifugal fan cabinet The fundamental difference in the mechanical structure of the fan: axial fan blade diameter is limited to the diameter of the shell, and the centrifugal fan, there is no limitation in this regard axial fan box, you can use the blade forward or backward blades for wind wind Pressure to adapt to a wider requirements. And do silencer cabinet handle on noise indicators have obvious advantages waterproof axial fans, rich ventilation equipment (certified), Chengde axial fan provided by Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (0) is the leader in Dezhou, fans, ventilation equipment, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Rich ventilation equipment in leadership with the staff warmly welcome all inquiries negotiations to create rich, ventilation a better future.