Patent ID: 7777360
Filing Date: 2010-08-17
Classification: F03D,F05B,Y02E

Abstract:
1. A windmill-type electric generation system that generates electricity by using the rotating movement of rotary blade units mounted on opposite ends of corresponding rotary shafts, which are mounted through a housing disposed at the upper end of a supporting post, such that the rotary blade units can be rotated in the blowing direction of wind, wherein the windmill-type electric generation system comprises: a first rotary blade unit mounted to the front end of the corresponding rotary shaft at one side of the housing, the first rotary blade unit having the smallest length; a second rotary blade unit mounted on the corresponding rotary shaft such that the second rotary blade unit can be rotated in the direction opposite to the rotating direction of the first rotary blade unit, the second rotary blade unit being disposed at the rear of the first rotary blade unit while being spaced a predetermined distance from the first rotary blade unit, the second rotary blade unit having a length greater than that of the first rotary blade unit; a third rotary blade unit mounted on the corresponding rotary shaft at the other side of the housing such that the third rotary blade unit can be rotated in the same rotating direction as that of the second rotary blade unit, the third rotary blade unit having a length greater than that of the second rotary blade unit; a fourth rotary blade unit mounted on the corresponding rotary shaft such that the fourth rotary blade unit can be rotated in the direction opposite to the rotating direction of the third rotary blade unit, the fourth rotary blade unit being disposed at the rear of the third rotary blade unit while being spaced a predetermined distance from the third rotary blade unit, the fourth rotary blade unit having a length greater than that of the third rotary blade unit; a first power transmission mechanism for transmitting the rotating movement of the second and third rotary blade units to an armature of an electric generator; a second power transmission mechanism for transmitting the rotating movement of the first and fourth rotary blade units to a magnetic pole of the electric generator; and the electric generator for generating electricity through the rotation of the armature and the magnetic pole in the opposite directions, which is accomplished by the rotating movement of the first to fourth rotary blade units transmitted to the armature and the magnetic pole by the first and second power transmission mechanisms.