Patent ID: 8734093

Claim:
A mechanism for modulating a fluid flow in a diffuser flow path of a compressor diffuser, the mechanism comprising: a shroud disposed on the diffuser flow path and having a cam and a driving wheel fixed base; a plurality of diffuser vanes each having a diffuser guide vane disposed in the diffuser flow path and a diffuser vane shaft fixedly disposed on the diffuser guide vane at a position penetrating from the diffuser flow path through the shroud; a driving ring sleeved on the cam and having a moving bar; a plurality of sliding blocks each having one end connected with one end of the diffuser vane shafts that penetrates through the shroud, and another end having a sliding groove, the moving bar being sleeved on the sliding grooves; a driving wheel disposed in the driving wheel fixed base and having a driving shaft connected to an actuator outside of the compressor diffuser, the driving shaft transmitting power along a shaft of the compressor diffuser; and a driving cable, connected to the driving wheel and the driving ring, for driving the driving wheel to rotate by the driving shaft that transmits said power, the rotating driving wheel driving the driving ring such that the moving bar of the driving ring moves in the sliding grooves and the sliding blocks are rendered to move and drive the diffuser guide vanes to rotate, thereby modulating disposition angles of the diffuser guide vanes in the diffuser flow path.