CENTRIFUGAL COMPRESSOR

摘要

A compressor 11 has a hub-side wall 51b of a hub-side wall plate 51, a shroud-side wall 17 that faces the hub-side wall 51 b and forms a diffuser path between the shroud-side wall 17 and the hub-side wall 51b, vanes 53 that protrude from the hub-side wall plate 51 into the diffuser path, and an actuator 19 capable of changing the distance between the vanes 53 and the shroud-side wall 17 in accordance with a flow rate of air in the diffuser path. Adjacent ones of the adjacent vanes 53 do not overlap with each other when viewed from a center axis of the compressor 11. When the actuator 19 maximizes the distance between the vanes 53 and the shroud-side wall 17, the distance between the vanes 53 and the shroud-side wall 17 is smaller than the distance between the hub-side wall 51b and areas of the shroud-side wall 17 that face the vanes 53.