US 4,545,726 A · Turbine

Abstract

A turbine which rotates in the same directional sense for both directions of throughflow of a working medium contains rotor blades possessing an aerofoil-shaped profile which at least over a portion of the length of the rotor blades is subdivided into profile parts or portions in order to improve the flow of the working medium about the rotor blades. The profile parts of the rotor blades are non-symmetrically constructed or arranged at least in part with respect to each plane which is perpendicular to the momentary throughflow direction of the rotor. It is therefore possible to reduce the dimensions of the turbine with essentially the same power output. Such type of turbine is particularly suitable for extracting energy from the movement of waves of bodies of water, such as the sea water of the ocean, and air moved by the waves alternately in opposite directions serves as the working or flow medium.

Claims16

Dependent claims

A turbine comprising:

a rotatable rotor provided with a rotor hub and rotor blades each having a profiled structure defining a substantially aerofoil-shaped profile;
a working medium alternately flowing through the rotor in opposite throughflow directions;
said rotor rotating in the same direction of rotation during both throughflow directions of the working medium;
the profiled structure of each of the rotor blades being subdivided at least over a portion of the length of the rotor blades into profile parts in order to improve the flow of the working medium around the rotor blades;
each of said profile parts defining a blade member;
said blade members being at least in part spaced from one another in the throughflow directions of the working medium;
and
at least one of the profile parts being non-symmetrical to a plane which is perpendicular to the momentary throughflow direction of the working medium and which plane extends through said at least one profile part.

5 more elements

Dependencies are inferred from the claim text.

Turbine

Life of this patent

Turbine

Life of this patent

Abstract

Claims16