Propeller fans are widely used in a variety of equipments such as electric appliances (refrigerators, microwaves, etc.), air conditioners, automobile radiators, and cooling devices for PCs/servers. Due to the strong need for environment-friendly (low energy consumption, low noise) and lower manufacturing costs of such equipments, a new design technology enabling higher efficiency, smaller size, and lower noise are demanded.
Three-Dimensional Inverse Design Method, where the 3-D blade profile is designed for a specified blade loading distribution, has been applied for designing a propeller fan rotor with high efficiency and low noise.