| 摘要 |
Provided is a centrifugal fan having a support section, a plurality of blades, and a mounting section, in which a rotation shaft is attached to the mounting shaft and made to rotate in a prescribed direction so that air taken in from the front of the support section is blown out radially. Each of the blades comprises: a primary wing section that has a trailing edge which is parallel to the central axis of rotation and a leading edge end section which is parallel to the central axis of rotation, and the thickness of the primary wing section gradually grows thinner toward the trailing edge and the leading edge end section; and an auxiliary wing section that extends from the leading edge end section of the primary wing section toward the interior of the centrifugal fan. When viewed along the central axis of rotation direction, the auxiliary wing section has a length from the leading edge end section of the primary wing section to the leading edge of the auxiliary wing section that is a greater on the support-section side than on an intake side, and the thickness of the auxiliary wing section is constant across the entire area of the auxiliary wing section. |
