Centrifugal fan design to achieve high efficiency and other requirements, we must first consider more important to choose the following programs. ① vane type reasonable choice a. Obtained before the pressure from the gas to see the blade maximum radial blade a little time after the blade is minimized. b. From an efficiency standpoint, Heilongjiang mine centrifugal fan, backward blade highest radial vanes center Hubei small centrifugal fan, forward blades minimum. C. From the structure size, the flow rate and speed constant, to reach the same pressure premise, the minimum diameter of the impeller forward low pressure centrifugal fan northeast, and lesser radial impeller diameter quotient, after the maximum diameter of the impeller. d. From the process point of view, the simplest straight blade manufacturing. The main flow, pressure, power, efficiency and speed. In addition, the size of the vibration and noise centrifugal fan is the main technical indicators. Also known as the air volume flow in the unit of time the volume of gas flowing through the centrifugal fan representation; pressure, also known as pressure refers to the value of the gas pressure increases in the centrifugal fan, there is static pressure, dynamic pressure and total pressure points; power means the centrifugal fan input power, namely shaft power, effective power and fan shaft power ratio called efficiency centrifugal fan total pressure efficiency up to 90%. Heilongjiang mine centrifugal fans | centrifugal fans | nagorye blower provided by the Shanxi nagorye blower limited liability company. Shanxi nagorye Blower Co., Ltd. (www.sxgfj.cn) strong, credible, Shanxi Xinzhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead nagorye blower and you hand into the brilliant, for a better future!