Title:
VESSEL PROPULSION DEVICE, VESSEL
Document Type and Number:
Japanese Patent JP2022154737
Kind Code:
A
Abstract:
To suppress an occurrence of a swirl in a wing end of a blade and an increase in frictional loss occurring during propulsion of a vessel.SOLUTION: A vessel propulsion device for propelling a vessel comprises: a duct provided below a hull of the vessel; and a propeller arranged to be rotatable inside the duct. The propeller includes blades and a cylinder member which is a cylindrical surrounding the blades and fixed to the wing ends of the blades. In a cross-section view in an extending direction of the duct, when a virtual line passing a front edge end and a rear edge end of the duct is defined as a first line, and a line connecting a center of an inscription circle in contact with both of an inner periphery surface and an outer periphery surface of the duct from the front edge end to the rear dege end is defined as a second line, the second line is positioned on an outer periphery surface side of the duct compared to the first line.SELECTED DRAWING: Figure 3
Inventors:
HOSONO KAZUKI
KAWABUCHI MAKOTO
YAMADA TAKAYOSHI
KUBOTA MASAYA
KAWABUCHI MAKOTO
YAMADA TAKAYOSHI
KUBOTA MASAYA
Application Number:
JP2021057913A
Publication Date:
October 13, 2022
Filing Date:
March 30, 2021
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B63H5/16; B63H1/28
Attorney, Agent or Firm:
SSIP Patent Attorney Corporation
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