COOLED AIRFOIL, GUIDE VANE, AND METHOD OF MANUFACTURING AIRFOIL AND GUIDE VANE
PROBLEM TO BE SOLVED: To provide an airfoil having a first airfoil height section extending toward a tip, in which, in a meridional view, a leading edge and a trailing edge are straight along the first airfoil height section, the airfoil has a second airfoil height section adjacent to the tip and ex...
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| Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an airfoil having a first airfoil height section extending toward a tip, in which, in a meridional view, a leading edge and a trailing edge are straight along the first airfoil height section, the airfoil has a second airfoil height section adjacent to the tip and extending toward a hub end, the airfoil is concavely shaped at the leading edge, and convexly shaped at the trailing edge along the second airfoil height section.SOLUTION: At least one cooling channel (65, 66, 67) is provided within an airfoil (61), and the cooling channel is extended straight in a first cooling channel length section, and is bent in a second cooling channel length section. A cooling channel wall provided on a leading edge (LE) side is convexly shaped and a cooling channel wall provided on a trailing edge (TE) side is concavely shaped. Moreover, a method for casting the airfoil is disclosed.SELECTED DRAWING: Figure 2
【課題】翼は、先端部に向かって延びる第１の翼高さセクションを有し、メリジオナル図において、前縁と後縁とは、第１の翼高さセクションに沿って直線的であり、翼は、先端部に隣接した、ハブ端部に向かって延びる第２の翼高さセクションを有し、翼は、前縁において凹面状の形状を有しており、かつ第２の翼高さセクションに沿って後縁において凸面状の形状を有する。【解決手段】少なくとも１つの冷却通路（６５，６６，６７）が、翼（６１）内に設けられており、冷却通路は第１の冷却通路長さセクションにおいて直線的に延びており、かつ第２の冷却通路長さセクションにおいて曲がっており、前縁（ＬＥ）側に設けられた冷却通路壁は、凸面の形状を有し、後縁（ＴＥ）側に設けられた冷却通路壁は、凹面の形状を有する。さらに、翼を鋳造する方法が開示されている。【選択図】図２ |
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