IMPINGEMENT COOLING STRUCTURE

Title:

IMPINGEMENT COOLING STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2007/099895

Kind Code:

A1

Abstract:

An impingement cooling structure comprises a plurality of shroud members (10) connected to each other in the circumferential direction so as to form a ring-shaped shroud surrounding a hot gas flow and a shroud cover (20) installed on the radial outer surfaces of the shroud members to form a hollow cavity (2) therebetween. The shroud cover has first impingement-cooling holes (22) which communicate with the cavity and perform impingement-cooling of the inner surface of the cavity by jetting cooling air to the inside of the cavity. The shroud member (10) has holed fins (12) dividing the cavity into sub-cavities. The holed fin has second impingement-cooling holes (12a) for jetting the cooling air (3), which flows from the first impingement-cooling holes into the holes (12a), diagonally toward the bottom face of the adjacent sub cavity.

Inventors:

FUJIMOTO SHU (JP)
OHKITA YOUJI (JP)
FUKUYAMA YOSHITAKA (JP)
YAMANE TAKASHI (JP)
MATSUSHITA MASAHIRO (JP)
YOSHIDA TOYOAKI (JP)

Application Number:

PCT/JP2007/053486

Publication Date:

September 07, 2007

Filing Date:

February 26, 2007

Export Citation:

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Assignee:

IHI CORP (JP)
JAPAN AEROSPACE EXPLORATION (JP)
UNIV TOKYO AGRICULTURE (JP)
FUJIMOTO SHU (JP)
OHKITA YOUJI (JP)
FUKUYAMA YOSHITAKA (JP)
YAMANE TAKASHI (JP)
MATSUSHITA MASAHIRO (JP)
YOSHIDA TOYOAKI (JP)

International Classes:

F01D25/24; F02C7/18

Foreign References:

JPH11247621A	1999-09-14
JPH11200805A	1999-07-27
JP2004100682A	2004-04-02
JPS51147805U	1976-11-27
JPS5865901A	1983-04-19
JPH11257003A	1999-09-21
JPH10508077A	1998-08-04

Other References: