| 摘要 |
The invention refers to a rotor blade or guide vane airfoil for a gas turbine engine having a longitudinal axis and a source of cooling fluid. The airfoil has a pressure wall, a suction wall, a leading edge, a trailing edge and at least one cooling fluid flow passage. The cooling fluid flow passage is in fluid communication with the source of cooling fluid. Means for directing cooling fluid at least to the trailing edge are provided, whereas the cooling fluid flow passage including: a plurality of axially extending walls, each of the walls extending laterally between the pressure wall and suction wall. The plurality of walls are radially spaced within the cooling fluid flow passage such that adjacent pairs of walls define a channel. The axial spacing between the adjacent walls include in radial direction of the airfoil a pins and a ribs structure, wherein the pins holistic or approximately cover the axial height of the channel. The ribs have a deeper level with respect to the pins and the ribs establish a bridge-like connection between each of adjacent ribs. |
| 主权项 |
1. A rotor blade or guide vane airfoil for a gas turbine engine having a longitudinal axis and a source of cooling fluid; the airfoil comprising a pressure wall, a suction wall, a leading edge, a trailing edge and at least one cooling fluid flow passage, wherein the cooling fluid flow passage is in fluid communication with the source of cooling fluid and providing means for directing cooling fluid at least to the trailing edge, wherein the cooling fluid flow passage including: one or more axially extending walls, each of the walls extending laterally between the pressure wall and suction wall, one or more of walls being spaced within the cooling fluid flow path such that adjacent pairs of walls define a channel between the pressure wall and suction wall, the spacing between the adjacent walls comprising in flow direction of the cooling fluid a structure of regularly or irregularly disposed pins and ribs, wherein the pins holistic or approximately cover the axial height of the fluid flow passage, the ribs have a deeper level with respect to being actively connected pins, and the ribs establish a bridge-like connection between each of adjacent pins. |
