Title:
PUMP
Document Type and Number:
Japanese Patent JP2003083284
Kind Code:
A
Abstract:
To prevent occurrence of cavitation at vanes of a pump.
This pump 10 comprises a main shaft 14 longitudinally rotatably supported inside a casing 12 and plural vanes 16 fixed on the main shaft 14 via hubs 14a arranged with a constant interval circumferentially around a rotation shaft line O of the main shaft 14 as the center. Regions I, II, III where local relative angles β of flow along negative pressure surfaces 16 of the vanes 16 are constant in the flow directions are formed therein.
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Inventors:
KOBAYASHI ICHITA
Application Number:
JP2001276968A
Publication Date:
March 19, 2003
Filing Date:
September 12, 2001
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F04D23/00; F04D29/18; (IPC1-7): F04D23/00; F04D29/18
Attorney, Agent or Firm:
Takashi Ishida (4 others)