Volute casing type wind power machine

The utility model relates to a volute casing type wind power machine, which belongs to a device for generating electricity through efficiently utilizing wind power and is characterized in that the volute casing type wind power machine is provided with a volute casing capable of rotating on a concentric circle rail, and an air inlet of the volute casing maintains an air inlet state all the time through being controlled by a wind vane. When a door of the air inlet opens to a large degree, the weak wind can be enhanced by twice, and the door is closed or closed to a small open degree to regulate the wind quantity when the wind is strong. The inlet air is blown towards blades around a vertical wind wheel in six directions through the air inlet and six arc-shaped wind passages arranged in the volute casing. Compared with the existing one-way blowing vertical shaft type wind wheel, five sixth blades are prevented from bearing the dead wind resistance, the number of the wind receiving blades is increased by about 5