| 摘要 |
PROBLEM TO BE SOLVED: To provide a centrifugal compressor which widens a range that is cleaned by a cleaning liquid injection device and thereby allows a passage to be effectively cleaned.SOLUTION: A centrifugal compressor comprises: a casing; a shaft supported in the casing; an impeller which is provided at the shaft and rotates to compress a fluid; and a cleaning liquid injection device 30 which injects a cleaning liquid W into a passage formed by the impeller and the casing. The cleaning liquid injection device 30 includes: a nozzle 31 which is provided on a diffuser rear wall 12b forming a diffuser passage 12 in the passage and is disposed so as to inject the cleaning liquid W toward a diffuser front wall 12a in a span direction; and a nozzle 31 which is provided on the diffuser front wall 12a and is disposed so as to inject the cleaning liquid W toward the diffuser rear wall 12b in the span direction. |
