Zhongshan Broad-Ocean Motor Co., Ltd.

Fengqi Wang

Wei Lei

Yanhu Lin

Hongbin Wang

A wind wheel including a plurality of blades and a hub. The plurality of blades each includes an inner edge, an outer edge, a leading edge, and a trailing edge. In a top view of the orthographic projection of the wind wheel, the maximum distance between the center O of the hub and the outer edge of the plurality of blades refers to the outer diameter R; the distance between the center O and the cross point Aof the inner edge and the leading edge is named R; the outer edge is connected to the leading edge via an arc; the distance between the center O and a joint Aof the arc and the leading edge is named R; and the distances R, R, and the outer diameter R satisfy the following conditions: 0.35R&#x2264;R&#x2264;0.45R; 0.8R&#x2264;R&#x2264;0.9R.

Wind wheel and fan comprising the same

An induced draft fan, including a volute including a chamber and an air discharge pipe; and a wind wheel disposed in the chamber of the volute. The wind wheel is connected to and operationally driven by a rotation shaft of a motor. The air discharge pipe is disposed on one side of the volute, and includes an inner pipe and an outer pipe surrounding the inner pipe. The inner pipe of the air discharge pipe communicates with the chamber, to form an air discharge passage. An annular groove is disposed between the inner pipe and the outer pipe; and the outer end of the outer pipe is provided with a curved groove, the curved groove extends axially and circumferentially to divide the outer pipe into a fixed part and a flexible part.

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Zhongshan, China

Fengqi Wang