Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
WATERJET PROPELLER AND WATERJET PROPULSION SHIP
Document Type and Number:
Japanese Patent JP2014184798
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a waterjet propeller and a waterjet propulsion ship capable of improving operation performance, by further uniformizing a water flow.SOLUTION: The waterjet propulsion ship comprises a suction pipeline 2 having a bending part of changing the extension direction in the middle and introducing water W from a hull external part into an impeller and a first guide vane 5 provided in the suction pipeline 2 on the upstream side of the bending part, and the first guide vane 5 is provided in a rear side area in the rotational direction R of the impeller more than a boundary line L of extending toward the bending center direction side of the bending part of the suction pipeline 2 more than the axis and also toward the bending center direction side from the axis, in a cross section orthogonal to the axis of the suction pipeline 2, and is also provided so as to increase the cross-sectional area orthogonal to the axis in a first flow passage C1 between the first guide vane 5 and a wall surface of the suction pipeline 2 toward the downstream side on the bending center direction side of the bending part.

Inventors:
FUKAO SHINJI
Application Number:
JP2013060144
Publication Date:
October 02, 2014
Filing Date:
March 22, 2013
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B63H11/103; B63H11/08
Domestic Patent References:
JPH0724698U1995-05-09
JPH04159194A1992-06-02
Attorney, Agent or Firm:
Woods Ryuichiro
Masatake Shiga
Norio Takahashi
Tetsuo Yamazaki
Yasushi Matsunuma