| 摘要 |
A centrifugal compressor provided with: an impeller (3) wherein a fluid that flows in toward one side in the shaft direction is discharged by rotation from an outlet that faces outward in the radial direction; and a casing (5) provided around the impeller (3), and having formed therein an outlet flow channel (6) for circulating the fluid discharged from the outlet of the impeller (3) and increasing the pressure of the fluid as the fluid flows further downstream; the centrifugal compressor having formed therein a circulation flow channel (26) having a first opening section (28) connected to the outlet flow channel (6) and a second opening section (27) connected to the outlet flow channel (6) further upstream from the first opening section (28). |
