TURBINE IMPELLER, TURBINE, TURBINE GENERATOR AND FREEZING DEVICE

摘要

A turbine impeller (5) is equipped with multiple blades (52) provided along the circumferential direction around a shaft (X). Each blade (52) has only one impact surface (53), which is impacted by a fluid, in the thickness direction of the turbine impeller (5). The impact surface (53) is formed into a curved surface notched rearwardly in the direction of rotation of the shaft (X). The impact surface (53) is constructed so that the fluid enters from the front edge, which is one end of the turbine impeller (5) in the thickness direction, and is discharged from the back edge, which is the other end in the thickness direction.