Patent ID: 6939101
Filing Date: 2005-09-06
Classification: F03D,Y02B,Y02E,Y10S

Abstract:
1. A windmill, comprising: wind intake means having wind guide plates which are radially located to guide wind in a predetermined direction, an upper plate which is installed on upper ends of the wind guide plates to prevent dispersion of the wind, a wind inlet which is defined between inner ends of two adjoining wind guide plates, and a wind inlet opening and closing device which is placed at the wind inlet so that the wind inlet opening and closing device is opened by the wind flowing through the wind inlet into the windmill and closed by the wind flowing through the wind inlet out of the windmill; power generating means disposed in a power generating tunnel which is defined at a lower end of the wind intake means, to rotate rotors by the wind introduced into the windmill through the wind intake means and thereby generate electricity; and wind exhaust means having a wind outlet which is defined below the wind inlet so that the wind used for generating electricity can be discharged to the outside through the wind outlet, and a wind outlet opening and closing device which is placed at the wind outlet so that the wind outlet opening and closing device is opened by the wind flowing through the wind outlet out of the windmill and closed by the wind flowing through the wind outlet into the windmill.