The present invention provides a power generating apparatus for driving a driven member 10 in the fluid flow: being connected to the driven member 10, the body 20 having the inflow pipe 31 and the discharge pipe (32); And having an inlet pipe 31 and the distal nozzle (43) and the centripetal diffuser (45) causing the centripetal flow to induce centrifugal flow of fluid onto the communication induction pipe (41) in the interior of the body 20 congestion (40); And high to the body centrifugal turbine (53) which surrounds the identity (40) and the interior receiving the tumbler 51 connected to the driven member 10, and coupled concentrically to the rotary drum 51 of 20 characterized in that the comprises a; the rotor 50 to generate a rotating force in association with the identity (40).
Accordingly, at the same time by combining the centripetal diffuser based on a centrifugal turbine for implementing a power source for the driven member, such as a generator in a small and light-weight and low-cost structure it is effective to enlarge the utilization range as a highly efficient high pressure pump.