Patent ID: 8133008
Filing Date: 2012-03-13
Classification: F01D,F04D,F05D,Y02T,Y10S

Abstract:
1. An axial flow fluid apparatus comprising: a plurality of blade rows axially positioned, each row including a plurality of blades arranged around a shaft, each blade of the plurality of blades having a positive pressure surface positioned to face upstream in a direction of fluid flow, a negative pressure surface positioned to face downstream in the direction of fluid flow, a leading edge, and a trailing edge; at least one blade of the plurality of blades including a fluid passage configured to jet a fluid to a downstream velocity defect region resulting from the at least one blade, the fluid passage including a fluid introducing port positioned so as to be exposed to the upstream side of the at least one blade so as to lead from the positive pressure surface to the negative pressure surface or the trailing edge; the fluid passage including a fluid jet port positioned in the negative pressure surface or in a trailing edge of the blade, and a passage portion connecting the fluid introducing port and the fluid jet port, wherein a point of maximum camber of the blade exists between the fluid introducing port and the fluid jet port, and the fluid introducing port is positioned at less than or equal to 50% of the chord length of the blade measured from the leading edge of the blade.