Patent ID: 8092152
Filing Date: 2012-01-10
Classification: F01D,Y02T

Abstract:
1. A device for cooling the slots in a turbomachine rotor disk, the device comprising: a rotor disk comprising: a retaining annulus mounted against the upstream radial face of the disk and including an annular flange that extends upstream and that is placed around the flange of the disk, co-operating therewith to leave an annular space forming a cooling air diffusion cavity, this diffusion cavity opening out at its downstream end into the bottom of each of the disk slots, at the upstream ends thereof; and a plurality of air admission orifices regularly distributed around the axis of the rotation of the disk and opening out into the diffusion cavity at the upstream end thereof; wherein the downstream end of the air diffusion cavity includes means for reducing the flow rate of air penetrating into the slots of the disk that are situated radially in register with the air admission orifices and for increasing the flow rate of air penetrating into the slots that are further away from the air admission orifices.