| 摘要 |
PROBLEM TO BE SOLVED: To prevent a cooling fluid led through a cooling passage from having the influence on aerodynamics action of a blade, eliminate necessity for carrying out injection at the rear end of the blade, and realize a small rear rim radius by injecting the cooling fluid in a blade head region. SOLUTION: In a cooling type blade which consists of a blade base 11 and a blade main body 1, the blade main body 1 is formed of walls of a discharging side and a suction side which are connected to each other so as to form at least one hollow chamber 2 used in a cooling fluid passage through a rear rim region 4 and a front rim region 3. A cooling passage 7 dispersed extending in the nearly radial direction is arranged in the rear rim region 4.
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