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Marine engine assembly including a cabin mountable under a ship's hull

A technology for propulsion components and underwater parts, applied in ship propulsion, ship components, propulsion components, etc., can solve problems such as bulky

Inactive Publication Date: 2007-05-09
ALSTHOM SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So these common POD type propulsion assemblies are generally bulky at least due to the large space required between the hull and the propeller
In addition, such propulsion assemblies are generally responsible for vibrations and cavitation, particularly when the propulsion assembly is in rotation

Method used

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  • Marine engine assembly including a cabin mountable under a ship's hull
  • Marine engine assembly including a cabin mountable under a ship's hull
  • Marine engine assembly including a cabin mountable under a ship's hull

Examples

Experimental program
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Effect test

Embodiment Construction

[0027][27] In FIG. 1 , the propulsion assembly 1 according to the invention is a side view in longitudinal section along the plane formed by the longitudinal axis X of the cabin 2 and the axis of rotation Y of the assembly 1 . The assembly 1 is mounted under the submerged part 10 of a vessel, the cabin 2 is mounted in conventional manner on a support column 3 which is rotatably mounted on a sealed bearing 9 passing through the hull. In the embodiment referred to in this figure, the boat 2 is dimensioned to house an electric motor 8 , the rotor of which (not shown) is connected in rotation to the drive shaft 11 of the propeller 4 . The drive shaft 11 is kept along the X-axis direction by the bearing 12 . The cabin as well as the supporting columns 3 are profiled in a known manner in order to optimize the hydrodynamic flow of the water flow indicated by the arrow F.

[0028] [28] As is known from the prior art, it is also possible to consider another embodiment in which the mot...

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Abstract

An engine assembly (1, 1', 1 ) including at least one pod (2) connected to a supporting leg (3, 3', 3 ), a propeller (4) with at least two blades (14) located at the back of the pod, and an arrangement of at least three flow-directing fins (50-55, 3'A) attached to the pod (2). The fin arrangement forms a ring (5) substantially perpendicular to the longitudinal axis (X) of the pod (2), which ring is within an area (Zx) located between the central portion of the supporting leg (3, 3', 3 ) and the propeller. The assembly further includes a nozzle (6) around all or part of the propeller and said ring (5). The blades (14) each have one end of which one edge (7) is flush with the inner wall of the nozzle (6) so that the propeller (4) acts as the impeller of an axial-flow pump.

Description

technical field [0001] [01] The present invention relates to a propulsion assembly for a ship comprising: [0002] [02] - a cabin (nacelle) mechanically connected to a support column frame for installation under the underwater part (caréne) of the ship; [0003] [03] - a propeller located at the rear of the cabin, the propeller comprises at least two blades and is rotatably connected to a transmission shaft connected to a motor; [0004] [04] -Arrangement of at least three flow-guiding wings (ilerons orienteurs) fixed to the cabin, said arrangements forming a crown substantially perpendicular to the longitudinal axis of the cabin. [0005] [05] More particularly, the present invention relates to a compact propulsion oriented drive (POD) type propulsion assembly in which a support mast is provided so as to be rotatably mounted under the cabin of a ship. The parts of the cabin, called forward and aft respectively, are defined relative to the bow and stern of the ship, ie the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H5/14B63H5/125
CPCB63H5/125B63H5/14B63H2005/1258B63H5/07
Inventor C·戈丹
Owner ALSTHOM SA
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