| 摘要 |
PROBLEM TO BE SOLVED: To provide a Sirocco fan capable of sufficiently preventing leak flow to a suction side from an outer peripheral side of a fan rotor.SOLUTION: A Sirocco fan 1 includes a first projection 21 disposed at an outer periphery of a fan rotor 3 and extended in the radial direction of the fan rotor 3, a second projection 22 disposed at an outer periphery of the fan rotor 3 and extended in the rotating shaft direction of the fan rotor 3, a shielding plate 26 disposed on a housing 2 and opposed to the first projection 21 from the radial direction of the fan rotor 3, and a surrounding part 27 disposed on the housing 2 and surrounding a tip of the second projection 22. A first labyrinth part 31 is formed by the first projection 21 and the shielding plate 26, and further a second labyrinth part 32 is formed by the second projection 22 and the surrounding part 27. |
