| 摘要 |
<p>Provided is a centrifugal fan that can accelerate an airflow also in a trailing edge part on a main plate side. A centrifugal fan 110 includes a main plate 2 that is driven to rotate around a rotational axis 17, a shroud 3 that is disposed so as to be opposed to the main plate 2, including an intake port for taking in air, and plural blades that are disposed upright between the main plate 2 and the shroud 3. An adjacent distance between trailing edges of two adjacent blades 40 is gradually decreased in the direction from the shroud 3 to the main plate 2, at least from a certain point in the direction from the shroud 3 to the main plate 2, and further, in each blade 40, an inclination 53a of a negative pressure surface of the blade 40 that extends from the main plate 2 toward the shroud is smaller at least in the vicinity of the trailing edge than an inclination 53b of a pressure surface of the blade 40 that extends from the main plate 2 toward the shroud 3.</p> |
