What is the working theory of FBCDZ(FCDZ) Series Contra-rotating Axial Flow Main Fan?

The FBCDZ(FCDZ) Series Contra-rotating Axial Flow Main Fan operates on a unique two-stage impeller contra-rotating structure. This design is distinguished by its direct connection between the impeller and motor, both of which are of the same capacity and type.

The primary feature of this fan lies in its contra-rotating mechanism. Within the fan, there are two stages of impellers that rotate in opposite directions. Specifically, when the 1st stage impeller rotates clockwise, the 2nd stage impeller rotates counterclockwise. This contra-rotation is crucial for the fan’s operation.

As air flows into the 1st stage impeller, it receives energy and then exits through the 2nd stage impeller. Here, the 2nd stage impeller serves a dual purpose: not only does it function as a regular axial flow fan, but it also acts as a guide vane, directing the air with a radial velocity component across the entire peripheral direction. This process effectively increases the energy of the airflow, resulting in higher efficiency and greater wind volume compared to conventional axial flow fans.

In summary, the FBCDZ(FCDZ) Series Contra-rotating Axial Flow Main Fan achieves superior performance through its innovative contra-rotating design, allowing it to generate high-efficiency airflow with significant volume, surpassing the capabilities of standard axial flow fans.