What are the different types of impeller designs for high-pressure blowers?

The front face of a high-pressure blower impeller typically comes in several types, such as straight front faces, tapered front faces, and curved front faces. Regarding the air path, flat impellers with a front face do not align with the air path. The blade passages on the outer diameter of the high-pressure blower impeller are significantly larger than those on the inner diameter.

Consequently, not only does the airflow through the blades differ, but the airflow within the impeller itself cannot fully fill the outer diameter. This leads to vortex formation and power loss, thereby reducing the efficiency of the high-pressure blower.

Although the air path of a conical front plate is superior to that of a flat front plate, the flow channel between the blades cannot achieve uniform expansion across all sections.

Consequently, leakage still occurs in the blade flow path, adversely affecting the blower's efficiency. For manufacturers, incorporating curved front discs into production is more convenient than flat ones. The curvature of the arc-shaped front disc is determined by ensuring equal cross-sectional areas or uniform diffusion across the flow path between blades.