Patent ID: 8764385

Claim:
An axial centrifugal compressor comprising: a rotor including an axial portion and a spread-out portion, the spread-out portion including an impeller of the rotor; and a stator, separated from the rotor by a flow vein, and including an axial portion and a spread-out portion, the axial portions of the rotor and stator being concentric with an axis line and spaced apart by an amount of radial play, and the spread-out portions of the rotor and stator being aligned along the axis line and spaced apart by an amount of axial play, and a ventilation circuit that adjusts the amount of axial play between the spread-out portions of the rotor and stator, the ventilation circuit extending from the stator into a cavity inside the rotor and including: a first arm having a first valve that adjusts an opening amount of the first arm, and a second arm having a heat exchanger and a second valve that adjusts an opening amount of the second arm.