文章来源： 作者：罗茨机电 发布时间：2022-05-04 浏览次数：97
Centrifugal fan mainly consists of impeller, casing, coupling and shaft. Impeller is the main working part of generating wind pressure and transmitting energy; The casing is mainly used to introduce and discharge gas, and change part of the kinetic energy of the gas into pressure energy at the same time; The coupling is used to connect the motor and fan to transmit torque; Install and fix the impeller on the shaft and connect with the motor through the coupling. Centrifugal fan is mainly composed of impeller and casing. The impeller of small fan is directly installed on the motor. Medium and large fans are connected with the motor through coupling or pulley. Centrifugal fan is generally single-sided air inlet, with single-stage impeller; Large flow can be intake on both sides, with two back-to-back impellers, also known as double suction centrifugal fan.
Gas discharge: when the impeller rotates, the gas between the blades of the centrifugal fan is subjected to the action of centrifugal force to obtain kinetic energy (dynamic pressure head), which is discharged from the periphery of the impeller and flows to the outlet of the fan through the guidance of the volute like casing, so as to form a negative pressure in the middle of the impeller, so that the external air flow can continuously flow into and supplement, so as to discharge the gas from the fan.
Wind pressure reduction: the motor transmits the power to the fan impeller through the shaft, and the rotation of the impeller transmits the energy to the air. Under the action of rotation, the air generates centrifugal force, and the air diffuses around the blades of the fan impeller. At this time, the larger the fan impeller, the greater the energy received by the air, that is, the greater the pressure head (wind pressure) of the fan. If the large impeller is cut small, it will not affect the air volume, but only reduce the air pressure.
Impeller is the main component of fan. Its geometry, size, number of blades and manufacturing accuracy have a great impact on its performance. The impeller can rotate smoothly only after being corrected by static balance or dynamic balance. According to the different direction of blade outlet, the impeller is divided into three types: forward, radial and backward. The top of the blade of the forward impeller is inclined to the rotation direction of the impeller; The blade top of radial impeller is radial, which is divided into straight blade type and curved blade type; The top of the blade of the backward impeller is inclined reversely to the rotation of the impeller.
The above is a detailed introduction about Shaanxi centrifugal fan manufacturers. I hope it will be helpful to you If you have any questions, please contact us We will provide service for you with our attitude http://www.sdyqtc.com