초록 ▼

A plurality of wind turbine blades ( 3 ) are distributed equiangularly within a plane perpendicular to a horizontal rotating shaft ( 2 ) and around a hub ( 1 ) provided on the horizontal rotating shaft ( 2 ); the blade body of each turbine blade includes therewithin a tip auxiliary blade ( 6 ) house

A plurality of wind turbine blades ( 3 ) are distributed equiangularly within a plane perpendicular to a horizontal rotating shaft ( 2 ) and around a hub ( 1 ) provided on the horizontal rotating shaft ( 2 ); the blade body of each turbine blade includes therewithin a tip auxiliary blade ( 6 ) housed to be capable of extending toward and retracting away from a tip of the blade, and an auxiliary blade extension-and-retraction unit ( 8 ) for protruding the tip auxiliary blade ( 6 ) to increase the overall length of the blade; and when an airflow comes in at a low speed, the tip auxiliary blades ( 6 ) are protruded toward the tips to generate even greater rotating torque, thereby increasing a power generation output by the wind turbine.

대표청구항 ▼

1. A power-generating propeller-style wind turbine provided with a plurality of turbine blades distributed equiangularly within a plane perpendicular to a horizontal rotating shaft and around a hub provided on the rotating shaft, the turbine blades each having a blade tip, said turbine comprising:a

1. A power-generating propeller-style wind turbine provided with a plurality of turbine blades distributed equiangularly within a plane perpendicular to a horizontal rotating shaft and around a hub provided on the rotating shaft, the turbine blades each having a blade tip, said turbine comprising:a blade body of each of said plurality of turbine blades, wherein each body includes a tip auxiliary blade housed in said blade body and able to extend towards and extract away from a blade tip;an auxiliary blade extension-and-retraction unit for protruding the tip auxiliary blade toward the respective blade tips to increase an overall length of the blade; anda pitch changing guide member for changing a pitch of said tip auxiliary blade operatively connected to an extension-and-retraction guide unit for guiding said tip auxiliary blade to extend and retract. 2. A power-generating propeller-style wind turbine provided with a plurality of turbine blades distributed equiangularly within a plane perpendicular to a horizontal rotating shaft and around a hub provided on the rotating shaft, the turbine blades each having a blade tip, said turbine comprising:a blade body of each of said plurality of turbine blades, wherein said body includes a tip auxiliary blade housed in said blade body and able to extend towards and retract away from a blade tip, and an auxiliary blade extension-and-retraction unit for protruding the tip auxiliary blade toward the respective blade tips to increase an overall length of the blade;a leading edge auxiliary vane having an airfoil-shaped cross section capable of forming, between the vane and the blade body, a path for guiding an airflow to a rear face of the blade body, each path being disposed at a leading edge portion of the blade body of each of said turbine blades to be able to extend and retract frontwardly in a rotational direction; anda leading edge auxiliary vane extension-and-retraction unit for protruding said leading edge auxiliary vane frontwardly in said rotational direction and guiding the airflow from the path thus formed to the rear face of the blade body to generate lift on the leading edge auxiliary vane and to increase a rotating torque of the turbine blade. 3. The power-generating propeller-style wind turbine according to claim 2, and further comprising a pitch changing guide member for changing a pitch of the tip auxiliary blade, and an extension-and-retraction guide unit, said pitch changing guide member being operatively connected to said extension-and-retraction guide unit for guiding the tip auxiliary blade to extend and retract. 4. A power-generating propeller-style wind turbine provided with a plurality of turbine blades distributed equiangularly within a plane perpendicular to a horizontal rotating shaft and around a hub provided on the rotating shaft, the turbine blades each having a blade tip, said turbine comprising:a blade body of each of said plurality of turbine blades, wherein said body includes a tip auxiliary blade housed in said blade body and able to extend towards and retract away from a blade tip, and an auxiliary blade extension-and-retraction unit for protruding the tip auxiliary blade toward the respective blade tips to increase an overall length of the blade;a leading edge auxiliary vane having an airfoil-shaped cross section capable of forming, between the vane and the blade body, a path for guiding an airflow to a rear face of the blade body, each path being disposed at a leading edge portion of the blade body of each of said turbine blades to be able to extend frontwardly in a rotational direction; anda leading edge auxiliary vane extension-and-retraction unit for protruding said leading edge auxiliary vane frontwardly in said rotational direction and guiding the airflow from the path thus formed to the rear face of the blade body to generate lift on the leading edge auxiliary vane and to increase a rotating torque of the turbine blade;each of said blade bodies of each turbine blade including a rear auxiliary vane provided at a trailing edge portion able to extend and retract rearwardly in the rotational direction, and a rear auxiliary vane extension-and-retraction unit for protruding the rear auxiliary vane to extend rearwardly to increase a vane arc length. 5. The power-generating propeller-style wind turbine according to claim 4, and further comprising a pitch changing guide member for changing a pitch of the tip auxiliary blade, and an extension-and-retraction guide unit, said pitch member being operatively connected to said extension-and-retraction guide unit for guiding the tip auxiliary blade to extend and retract. 6. A power-generating propeller-style wind turbine provided with a plurality of turbine blades distributed equiangularly within a plane perpendicular to a horizontal rotating shaft and around a hub provided on the rotating shaft, said turbine blades each having a blade body, said turbine comprising:a leading edge auxiliary vane having an airfoil-shaped cross section capable of forming, between the vane and the blade body, a path for guiding an airflow to a rear face of the blade body, each path being disposed at a leading edge portion of the blade body of each of the turbine blades to be able to extend and retract frontwardly in a rotational direction; anda leading edge auxiliary vane extension-and-retraction unit for protruding said leading edge auxiliary vane frontwardly in said rotational direction and guiding the airflow from the path thus formed to the rear face of the blade body to generate lift on the leading edge auxiliary vane and increase a rotating torque of the turbine blade. 7. The power-generating propeller-style wind turbine according to claim 6, wherein the blade body of each turbine blade includes a rear auxiliary vane provided at a trailing edge portion able to extend and retract rearwardly in the rotational direction, and a rear auxiliary vane extension-and-retraction unit for protruding the rear auxiliary vane rearwardly to increase a vane arc length. 8. A power-generating propeller-style wind turbine provided with a plurality of turbine blades distributed equiangularly within a plane perpendicular to a horizontal rotating shaft and around a hub provided on the rotating shaft, comprisinga blade body of each turbine blade wherein each of said blade body of each turbine blade includes a rear auxiliary vane provided at a trailing edge portion able to extend and retract rearwardly in the rotational direction, and a rear auxiliary vane extension-and-retraction unit for protruding the rear auxiliary vane rearwardly to increase a vane arc length.