| 摘要 |
PROBLEM TO BE SOLVED: To provide a centrifugal compressor in which the performance is maintained, a pressure recovery factor in a diffuser is improved, and deterioration of processing accuracy and assembling accuracy of a guide blade is prevented.SOLUTION: A centrifugal compressor includes a diffuser 7, and a radial impeller 2. The diffuser 7 includes: an inlet flow channel 7a in which a flow channel height is determined to be lower than a blade height of the radial impeller 2; a guide blade installation flow channel 7b having a flow channel height larger than that of the inlet flow channel 7a, and formed between a pair of planar flow channel wall surfaces 7b1 and 7b2 facing in parallel each other; and a guide blade 7c disposed in the guide blade installation flow channel 7b. |
