BY-SWF series fans: widely used in hotels, restaurants, shopping malls, office buildings, stadiums and other high-end civil construction or industrial and mining enterprises, ventilation and pressurized air supply. Among them, the two-speed fan can adjust the required air volume and wind pressure by shifting according to the working conditions.

The SWF mixed flow fan is interposed between the axial flow fan and the centrifugal fan. The impeller of the mixed flow fan allows the air to perform both centrifugal movement and axial movement. The movement of the air inside the shell mixes both axial flow and centrifugal motion, so it is called "Mixed flow."

The structural characteristics of the fan are mainly composed of impeller, casing, deflector, motor and other components. The impeller is welded to the hub using a twisted plate with a meridional acceleration feature. After dynamic balance check, overspeed test, has good aerodynamic performance. The casing is round and integrated with the sound absorbing collector. The outlet is equipped with a baffle with good airflow distribution and stable pressure.

The performance selection of the fan is the performance within the highest efficiency range. It is divided into five characteristics according to the flow rate. When selected, the performance table shall prevail. The performance of the qualified product of the fan shall not exceed ±5% at the rated flow. The performance selection table is the performance under standard conditions. The standard state atmospheric pressure is 101325Pa, t=20 relative temperature φ=50% air state, and the fan installation mode can be divided into vertical or horizontal.

Performance parameter table