MIXED FLOW TURBINE, OR RADIAL TURBINE - MITSUBISHI HEAVY IND LTD

Title:

MIXED FLOW TURBINE, OR RADIAL TURBINE

Document Type and Number:

WIPO Patent Application WO/2008/062566

Kind Code:

A1

Abstract:

Intended is to provide a mixed flow turbine or a radial turbine, which can suppress an abrupt increase in a load to be applied to the front edge portion of a blade, thereby to reduce an incidence loss. The mixed flow turbine or the radial turbine comprises a hub (3), and a plurality of blades (7) arranged at substantially equal interval on the outer circumference (5) of the hub (3) and having a warpage (23) curved convexly in the rotating direction, as entirely viewed from the front edge side to the back edge side. Each blade (7) is provided, at its front edge portion, with an inflection point (K), at which the warpage (23) in the section along the outer circumference is curved concavely in the rotating direction.

Inventors:

YOKOYAMA TAKAO (JP)
HIGASHIMORI HIROTAKA (JP)
EBISU MOTOKI (JP)
SHIRAISHI TAKASHI (JP)

Application Number:

PCT/JP2007/052355

Publication Date:

May 29, 2008

Filing Date:

February 09, 2007

Export Citation:

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Assignee:

MITSUBISHI HEAVY IND LTD (JP)
YOKOYAMA TAKAO (JP)
HIGASHIMORI HIROTAKA (JP)
EBISU MOTOKI (JP)
SHIRAISHI TAKASHI (JP)

International Classes:

F01D1/08; F01D5/04; F01D5/14; F02B39/00; F02C3/05

Domestic Patent References:

WO1980000468A1

1980-03-20

Foreign References:

JP2004092498A	2004-03-25
JPS55134797A	1980-10-20
US2484554A	1949-10-11
US2856758A	1958-10-21
US5730582A	1998-03-24
US4791784A	1988-12-20

Other References: