Patent ID: 9051840
Filing Date: 2015-06-09
Classification: F01D,F05D,Y02T

Abstract:
1. A wall of a turbo machine having a cascade of blades comprising: a first platform facing a first passage between blades in the cascade of blades; and a second platform facing a second passage between another adjacent cascade of blades on an upstream side and said cascade of blades on a downstream side, and having a circumferential outline having a distribution of radial positions, wherein the circumferential outline of said second platform has a minimum radius position near the circumferential center between said blades, said minimum radius position is on a front surface side or a rear surface side of said blades with respect to the circumferential center between said blades, and the circumferential outline has a curvature that is defined using one of a sine curve in the circumferential direction and a cosine curve in the circumferential direction.