| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a centrifugal compressor in which enlargement of size in the axial direction of a rotary shaft can be suppressed. <P>SOLUTION: In the centrifugal compressor 2, a vane blade 36 provided to a diffuser disk 37 can be protruded and retracted in an axis line Ax1 direction utilizing a cam mechanism 38 at a diffuser path 26 provided at the outer periphery of an impeller 15 rotating integrally with a rotary shaft 3. The cam mechanism 38 includes: a rotatable drive ring 40 having a drive cam part 41 in which height difference in the axis line Ax direction is given; and a driven part 42 which is protruded to the outside in a radial direction from the outer peripheral face of the diffuser disk 37, and moves the diffuser disk 37 in the axis line Ax1 direction following the drive cam 41 when the drive ring 40 is rotated. <P>COPYRIGHT: (C)2012,JPO&INPIT |
