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Title:
TURBINE WHEEL
Document Type and Number:
WIPO Patent Application WO/2011/055575
Kind Code:
A1
Abstract:
Provided is a turbine wheel which is provided with a plurality of vanes and which is shaped into a scallop shape obtained by notching a backboard-side portion between the suction surface of each vane and the pressure surface of the adjacent vane, wherein a backside leakage flow is suppressed to improve the efficiency of a supercharger. In each tip of the scallop shape in the radial direction, a suction-side protrusion (25) shaped like a band, the width of which is larger than the thickness of each vane (5), is formed on the suction surface (21) side of each vane, or a pressure-side protrusion (32) shaped like a band is formed on the pressure surface (19) side, or protrusions are formed on both sides so that the scallop width of each tip of the vane (5) is increased.

Inventors:
YOKOYAMA TAKAO (JP)
OSAKO KATSUYUKI (JP)
YOSHIDA TOYOTAKA (JP)
EBISU MOTOKI (JP)
Application Number:
PCT/JP2010/062656
Publication Date:
May 12, 2011
Filing Date:
July 28, 2010
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
YOKOYAMA TAKAO (JP)
OSAKO KATSUYUKI (JP)
YOSHIDA TOYOTAKA (JP)
EBISU MOTOKI (JP)
International Classes:
F01D1/28; F01D5/04; F02B39/00; F02C3/05
Domestic Patent References:
WO2003010433A12003-02-06
Foreign References:
JP2003201802A2003-07-18
JPS6028201U1985-02-26
US2941780A1960-06-21
JPS63154702U1988-10-11
JP4240512B12009-03-18
JP2000170541A2000-06-20
JPH10131704A1998-05-19
JP2003201802A2003-07-18
Other References:
See also references of EP 2410126A4
Attorney, Agent or Firm:
TAKAHASHI, MATSUMOTO & PARTNERS INTELLECTUAL PROPERTY CORP. (JP)
Patent business corporation Takahashi 松本 & partners (JP)
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