| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a centrifugal compressor capable of easily suppressing degradation of compression efficiency and further providing correction for suppressing the degradation of compression efficiency after designing a diffuser.SOLUTION: The centrifugal compressor includes: a diffuser 7 formed on an outer periphery side of an impeller 2 while being defined by a pair of opposed wall faces; and a scroll flow path 5c provided outside of the diffuser 7 in a radial direction. The diffuser 7 has a plurality of vanes 8. The plurality of vanes 8 are arranged around a position P eccentric to a rotation center O of the impeller 2 equally in a peripheral direction of the diffuser 7. The eccentric position P is set so that blade angles of the plurality of vanes 8 to the rotation center O of the impeller 2 are non-uniform in the peripheral direction of the diffuser 7 to produce less-variable static pressure in the diffuser 7.</p> |
