Patent ID: 9546561
Date: 2017-01-17
CPC Classifications: F01D,F02C,F05D

Claim:
1. A labyrinth disk for a turbomachine comprising: a hub; a web; and a frustoconical peripheral portion, the frustoconical peripheral portion including labyrinth seal teeth on an outer face and radial ribs distributed circumferentially on an inner face, wherein flanks of the ribs delimit, between one another, channels which open out at a downstream periphery of the disk at a downstream end of the frustoconical portion, a width of said channels decreasing from a base at an upstream end of the frustoconical portion to an opening at the downstream periphery of the disk, wherein a recess is created between two flanks of one of the ribs at the downstream periphery of the disk, the recess opening out at the downstream periphery of the disk.