| 摘要 |
PROBLEM TO BE SOLVED: To provide a blower device that can improve silent property and ventilation efficiency.SOLUTION: A blower device 1 generates an air flow on the basis of rotation of multiple blades 11. The blades 11 each have multiple serrated tooth parts 115 in a front edge part 114 facing the air flow. The tooth parts 115 project on a side of a negative pressure surface 113 relative to a tangent line n1 of the negative pressure surface 113 of the blades 11 in the front edge part 114.SELECTED DRAWING: Figure 3 |
