Construction of Centrifugal Fans: A centrifugal fan primarily consists of components such as the impeller, housing, drive mechanism, and control system. The impeller is the core component, available in various forms including single-stage single-suction, single-stage double-suction, double-stage single-suction, and double-stage double-suction. The material is typically cast iron, steel plate, or aluminum alloy, often coated with rubber or polymer protective layers. The housing guides the airflow, with its inner surface usually treated with a smooth coating to reduce frictional resistance. The drive mechanism typically employs an electric motor or internal combustion engine, which drives the impeller rotation via a coupling and transmission device. The control system is used to regulate the fan’s speed, airflow volume, and pressure, primarily utilizing technologies such as variable frequency speed regulation, soft start, and constant pressure control.
The working principle of a centrifugal fan: The centrifugal fan utilizes the centrifugal force generated by the rotation of the impeller to accelerate the airflow and creates pressure through the curved guide of the casing, thereby achieving the purpose of gas transportation and ventilation. By controlling the rotation speed of the impeller and the shape design of the casing, the flow rate and pressure of the airflow can be adjusted.
Selection of centrifugal fan: When choosing a centrifugal fan, it is necessary to consider its usage scenario and specific requirements. For example, according to the installation location away from vibration sources and high-temperature objects, ensure the smoothness and sealing of ventilation and air outlets, and perform precise horizontal correction and fixation. At the same time, the selection and installation of the driving device must comply with relevant technical standards and safety regulations, and regular maintenance and upkeep must be carried out. The choice of control system is also crucial, and appropriate technologies such as variable frequency speed regulation, soft start, and constant voltage control should be selected according to actual needs.
Post time: Jan-05-2026