Patent ID: 6506015
Filing Date: 2003-01-14
Classification: F01D,F04D

Abstract:
A centrifugal compressor comprising a rotary shaft, a compressor wheel mounted on the rotary shaft, the compressor wheel having vanes extending therefrom, and a shroud covering the edges of the vanes with a predetermined clearance between the edges of the vanes and the shroud, a vertical section of the shroud including an upstream portion extending in an axial direction of the rotary shaft, and a downstream portion curved radially outwards of the rotary shaft and extending from a downstream end of the upstream portion, wherein the thickness of the downstream portion increases from the upstream side toward the downstream side, wherein the ratio of the thickness at the downstream end of the downstream portion of the shroud to the thickness at the upstream end of the upstream portion of the shroud is about 1.5.