CENTRIFUGAL MACHINE IMPELLER Russian patent published in 2007 - IPC F04D29/28 

FIELD: mechanical engineering; compressors.

SUBSTANCE: invention relates to impellers of centrifugal machines. Proposed impeller has disk with blades fitted on disk. Layer of material is attached to surface of disk opposite to blades in which ratio of modulus of elasticity to density is less than that of disk material, for instance, glass plastic can be used for this purpose. Layer of similar material is arranged near outer diameter of plate of cover and main disk in zone of interblade channels. At elastic vibrations of disks of impeller in places of contact of material, internal friction, dissipation of energy of vibrations and reduction of their amplitude in places of contact of material appear, which has favorable effect on resistance of impeller to cyclic loads and provides required dynamic strength characteristics of impeller at relatively high peripheral velocities.

EFFECT: increased strength of impeller and high peripheral velocities.

2 cl, 1 dwg