| 摘要 |
PROBLEM TO BE SOLVED: To provide a propeller fan effectively suppressing Nz sound.SOLUTION: A propeller fan 1 includes a hub 2 having a shape that can be connected to a rotary drive shaft of a motor, and two blades 3, 4 disposed around the hub 2. A shape of a trailing edge 3a of first blade 3 is different from a shape of a trailing edge 4a of second blade 4. A cutout 6 is formed to the trailing edge 3a of the first blade 3. |
