Patent ID: 6238179
Filing Date: 2001-05-29
Classification: F04D

Abstract:
A centrifugal compressor having a compressor impeller with a rear wall which is arranged on a shaft and extends mainly radially, having a compressor casing enclosing the compressor impeller, having a flow duct for a working medium of the centrifugal compressor, which flow duct is formed between the compressor impeller and the compressor casing and having a separating gap from the compressor impeller and the compressor casing, which separating gap is connected to the flow duct, and having a feed device for a gaseous cooling medium, arranged in the compressor casing, and a corresponding removal device, the feed device opening into the separating gap and the separating gap having a mainly radially extending gap region in the region of the rear wall of the compressor impeller, wherein the feed device opens into the separating gap upstream of the mainly radially extending gap region of the separating gap.