CAST CASTING TREATMENT FOR COMPRESSOR BLADES

Japanese Patent JP3776957

B2

PROBLEM TO BE SOLVED: To dispense with a mechanical mounting body by providing the segment of an annular shroud with a first to a third circular arc members and a plurality of integral vane walls, separating the third circular arc member from the first and second circular arc members, and bridging between the inner face of the third circular arc member and inner faces of the first and second circular arc members by each vane wall.
SOLUTION: An annular shroud 32 extending in the peripheral direction centered on a reference axial line consists of a plurality of circular arc shroud segments 36. An outer shroud includes a first circular arc member 42 and a second circular arc member 44, and an inner shroud 38 consists of a third circular arc member 46. The third circular arc member 46 is separated from the first and second circular arc members 42, 44 for forming a first clearance 48 and a second clearance 50. A first end 66 of each vane 64 bridges over the first clearance 48 to mutually connect the inner faces in the radial direction 52, 56 of the first and third circular arc members 42, 46. Moreover, a second end 68 thereof spans over the second clearance 50 to mutually connect inner faces 54, 56 of the second and third circular arc members 44, 46. Consequently, many mounting sections become unnecessary.

John Dee Privette
William P. Beiln
Nick A. Norchev

JP24425595A

May 24, 2006

September 22, 1995

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United TechnologiesCorporation

F01D11/08; F04D27/02; (IPC1-7): F01D11/08

JP4314931A

US5282718

Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Tadahiko Kurita
Yasushi Kobayashi
Shigeo Takeuchi

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