CENTRIFUGAL FAN

摘要

A centrifugal fan includes a hub, a plurality of blades, and a shroud. The blades each have a curved part that is curved to incline toward a side on which air impinges when a connected end connected to an inwardly protruding portion of the shroud moves in a rotating direction of the centrifugal fan. The hub includes a hub-side diffuser ring that protrudes radially outward of the blades. The shroud includes a shroud-side diffuser ring that protrudes radially outward of the blades.

主权项

1. A centrifugal fan comprising:
a hub; a plurality of blades arranged along a circumferential direction of the hub; and a shroud arranged on an opposite side of the blades from the hub, each of the blades having a curved part that is curved to incline toward a side on which air impinges when a connected end connected to an inwardly protruding portion of the shroud moves in a rotating direction of the centrifugal fan, the hub having a hub-side diffuser ring that protrudes radially outward of the blades, and the shroud having a shroud-side diffuser ring that protrudes radially outward of the blades.