As a core working component, the impeller's application has expanded beyond its original impulsive steam turbine domain, permeating numerous modern industrial sectors. In aviation, the impeller is a core working component of aviation fuel pumps, used in fuel delivery pumps, fuel supply pumps, and refueling pumps, and has evolved into various functional forms such as inducer impellers, exhaust impellers, and integrated impellers. Impeller design has evolved from experience-based design to digital simulation; modern aviation impellers employ three-dimensional flow surface design to improve efficiency.
In the energy and power sector, the three-dimensional flow theory of turbomachinery has been applied in the design and research of the turbines for the Three Gorges Dam project in my country. Simultaneously, the impeller (moving impeller disk and stationary impeller disk) is a key component of the rotatable inner endwall casing of the compressor rotor, belonging to the core components of power machinery such as gas turbines.
In the civil and industrial equipment sector, automatically rotating axial flow impeller disks are used for oil-gas separation in household and catering industry range hoods. In addition, impellers (auxiliary impellers) have also been innovatively applied in special pump sealing systems, such as the auxiliary impeller seal design for pumps operating under various conditions.