Title:
DUCT DEVICE
Document Type and Number:
Japanese Patent JP2015127179
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a duct device for a marine vessel capable of achieving an energy-saving effect.SOLUTION: A duct device 1 comprises: a duct 2 disposed at least a part around a rotation shaft AX of a propeller in a front portion of the propeller installed onto a stern of a hull 100; and a stay 3 for connecting the duct and at least a part of the hull. A cross section of the duct is an airfoil profile type. An angle between a blade chord line of the airfoil and a line parallel to the rotation shaft, and a distance between a middle point of the blade chord line and the rotation shaft are different between a first part of the duct and a second part of the duct which is different from the first part with respect to a circumferential direction of the rotation shaft.
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Inventors:
YAMADA TAKAYOSHI
OSHIMA AKIRA
KAWAKITA CHIHARU
OSHIMA AKIRA
KAWAKITA CHIHARU
Application Number:
JP2013273249A
Publication Date:
July 09, 2015
Filing Date:
December 27, 2013
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B63H5/16
Domestic Patent References:
| JP2013132924A | 2013-07-08 | |||
| JP2011178222A | 2011-09-15 | |||
| JP2008239060A | 2008-10-09 | |||
| JP2008308023A | 2008-12-25 | |||
| JP2004130908A | 2004-04-30 | |||
| JP2002220089A | 2002-08-06 |
Foreign References:
| KR20130125628A | 2013-11-19 | |||
| KR20110083998A | 2011-07-21 |
Attorney, Agent or Firm:
Hiroaki Sakai
Jun Takamura
Jun Takamura
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