초록 ▼

A fluid turbine designed for increased power output includes an annular housing provided with a semi-spherical dome for directing incoming fluid flow to impinge on a plurality of rotor blades within the housing fixed to a vertical output shaft. An angle on the order of between 5°-85°, in the directi

A fluid turbine designed for increased power output includes an annular housing provided with a semi-spherical dome for directing incoming fluid flow to impinge on a plurality of rotor blades within the housing fixed to a vertical output shaft. An angle on the order of between 5°-85°, in the direction of rotation of the shaft, exists between the upper (leading) and lower (trailing) edges of each blade. The blades are manufactured from a plurality of aerodynamically-shaped, radially spaced ribs covered with a skin. The leading edge of each rib is curved, while the trailing edge is straight. The straight edge of the ribs in each blade approach a vertical plane through the vertical axis of the housing output shaft as the ribs progress radially inwardly towards the output shaft. The housing has fluid exit passages in its base so that deenergized fluid can be quickly flushed from the housing by the downwardly directed flow in combination with the novel blade configuration, which acts as a screw or force multiplier, to expel deenergized fluid. The airfoil shaped ribs also provide the blades with a contour for increasing the fluid velocity on the underside of the blades adjacent the fluid exit passage to aid in expelling the deenergized air while providing the turbine with both impulse and axial-flow, fluid impingement on the blades, resulting in a force vector of increased magnitude. A downwardly directed, substantially semi-cylindrical deflector frame connected to the housing blocks the path of flow of ambient fluid to create a low pressure area beneath the base to aid in continuously drawing fluid into the housing at high velocity to impinge on the rotor blades. The increased flow velocity and force on the blades along with the enhanced removal of deenergized fluid results in increased power output of the turbine.

대표청구항 ▼

A fluid turbine, comprising: a plurality of rotor blades mounted on a shaft for rotation in a reference plane about the longitudinal axis of said shaft when exposed to a source of flowing fluid. a housing enclosing said plurality of rotor blades therein and having interior sidewalls spaced above sai

A fluid turbine, comprising: a plurality of rotor blades mounted on a shaft for rotation in a reference plane about the longitudinal axis of said shaft when exposed to a source of flowing fluid. a housing enclosing said plurality of rotor blades therein and having interior sidewalls spaced above said rotor blades and inclined with respect to said reference plane for creating a fluid swirl area in upper regions of said housing, said housing including a fluid entrance passage therein lying within said reference plane in alignment with said plurality of rotor blades, said housing further including a fluid exit passage therein spaced from said swirl area and beneath said plurality of rotor blades, said fluid exit passage extending essentially coextensive with the area swept by said rotor blades upon rotation of the latter, each of said rotor blades having an upper and lower edge extending from said shaft radially outward from said longitudinal axis, the upper edge of each of said blades leading the lower edge thereof in the direction of rotation of said blades.