Wind power generation apparatus

Abstract

A wind power generation apparatus includes a wind collecting hood, a rotary shaft, a rotary structure and a wind guiding structure. The wind collecting hood is a hollow circular barrel to form an airflow passage. The rotary shaft is located in the airflow passage of the wind collecting hood. The rotary structure is mounted onto the rotary shaft. The wind guiding structure is fastened to the wind collecting hood and located at the front end of the rotary structure. The wind guiding structure directs direction of airflow and accelerates the airflow to become swirling airflow to directly blow the rotary structure at optimal angles, thus capability of driving the rotary structure to rotate by wind is increased and starting wind power of the rotary structure is reduced. The rotary structure is still rotated at where the wind is smaller to provide electric power.

1 . A wind power generation apparatus, comprising:
 a wind collecting hood which is a hollow circular barrel to form an airflow passage;   a rotary shaft located in the airflow passage of the wind collecting hood;   a rotary structure including a plurality of airflow receiving blades mounted on the rotary shaft in a spread fashion; and   a wind guiding structure including a plurality of airflow guiding vanes arranged in a spread manner and abutting a front end of the rotary structure, the airflow guiding vanes being fastened to the wind collecting hood.   
     
     
         2 . The wind power generation apparatus of  claim 1 , wherein the rotary shaft includes one end coupled to the wind guiding structure. 
     
     
         3 . The wind power generation apparatus of  claim 1 , wherein each airflow guiding vane includes a first inward curved surface and a first outward curved surface opposite to the first inward curved surface to form a rotating curvature; each airflow receiving blade including a second inward curved surface and a second outward curved surface opposite to the second inward curved surface to form an inverse rotating curvature. 
     
     
         4 . The wind power generation apparatus of  claim 3 , wherein each airflow guiding vane is formed at a greater thickness in a windward direction than a leeward direction. 
     
     
         5 . The wind power generation apparatus of  claim 3 , wherein each airflow receiving blade is formed at a greater thickness in a windward direction than a leeward direction. 
     
     
         6 . The wind power generation apparatus of  claim 1 , wherein the wind collecting hood includes a plurality of latch grooves wedged by the airflow guiding vanes to form fastening therewith. 
     
     
         7 . The wind power generation apparatus of  claim 1 , wherein the wind collecting hood includes two ends respectively formed at a diameter gradually shrunk towards a center of the wind collecting hood to form a neck portion. 
     
     
         8 . The wind power generation apparatus of  claim 1 , wherein the wind collecting hood is mounted onto an upright post. 
     
     
         9 . The wind power generation apparatus of  claim 8 , wherein the upright post includes a rotary portion and a holding portion bridged by a rotary bearing to form rotary coupling therewith. 
     
     
         10 . The wind power generation apparatus of  claim 1 , wherein the rotary structure further includes a driven ring connected to the airflow receiving blades at positions remote from the center thereof.