KR20110083423A

KR20110083423A - Propeller for ship and ship including the same

Info

Publication number: KR20110083423A
Application number: KR1020100003641A
Authority: KR
Inventors: 이승재; 한재문
Original assignee: 삼성중공업 주식회사
Priority date: 2010-01-14
Filing date: 2010-01-14
Publication date: 2011-07-20

Abstract

PURPOSE: A propeller and ship including the same are provided to save energy by improving the efficiency of a propeller. CONSTITUTION: A propeller comprises a hub(32), a wing(34), and a protruding member(36). The hub is combined with a hull to rotate. The wing is separately placed on the outer circumference of hub. The protruding member is arranged on the back side of each wing. The protruding member is arranged contiguous to trailing edge of each wing. The protruding member locates within 60% of propeller radius.

Description

Propellers and ships including the same

The present invention relates to a propeller and a ship comprising the same.

In general, propellers are used as propellers for ships. The propeller includes a plurality of wings. Each wing is arranged to have a constant angle of attack with respect to the fluid entering the propeller when the propeller rotates.

Accordingly, when the propeller rotates in the fluid, lift force is generated on each wing. The generated lift acts as a driving force on the ship.

In terms of energy savings, it is very important to increase the propeller propulsion efficiency. At present, various researches and attempts are being made to increase propeller propulsion efficiency.

Embodiments of the present invention provide a propeller and a ship including the same configured to improve the efficiency of the propeller.

According to an aspect of the present invention, a propeller installed in the hull, the hub rotatably coupled to the hull; And a plurality of wings spaced apart from the outer circumferential surface of the hub. And a protruding member disposed on a rear surface of each wing, wherein the protruding member is disposed adjacent to a trailing edge of each of the vanes, and the protruding member is positioned within 60% of the propeller radius. Propellers may be provided.

The protruding member may be a plurality, and the plurality of protruding members may be spaced apart in the propeller radial direction.

The protruding member may have a wedge shape.

According to another aspect of the invention, the hull; And a propeller rotatably coupled to the hull.

The protruding member may have a wedge shape.

1 is a view schematically showing a ship according to an embodiment of the present invention,
2 is a schematic view of the propeller included in the ship according to an embodiment of the present invention viewed from the rear.
3 is a cross-sectional view taken along AA of FIG. 2.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, and in the following description with reference to the accompanying drawings, the same or corresponding components are given the same or corresponding reference numerals and duplicate description thereof. Will be omitted.

1 is a view schematically showing a ship according to an embodiment of the present invention. Referring to FIG. 1, the ship 1 according to the present embodiment may include a hull 10 and a propeller 30.

The propeller 30 may be rotatably coupled to the hull 10. In this case, the propeller 30 may be coupled to one end of a shaft (not shown) provided in the hull 10. Rotation force generated from the main engine (not shown) provided in the hull 10 is transmitted to the propeller 30 through the shaft, the propeller 30 may rotate with respect to the hull 10.

2 is a schematic view of the propeller included in the ship according to an embodiment of the present invention viewed from the rear. Referring to FIG. 2, the propeller 30 may include a hub 32, a wing 34, a protruding member 36, and the like.

Hub 32 is rotatably coupled to hull 10. In more detail, the hub 32 may be coupled to one end of the shaft provided in the hull 10.

A plurality of wings 34 may be spaced apart from each other on the outer circumferential surface of the hub 32. Protruding members 36 may be disposed at the rear of each wing 34. The protruding member 36 may delay the flow peeling phenomenon by promoting the transition of the flow in each blade 34.

According to the present embodiment as described above, since the protruding members 36 are disposed on the rear of each blade 34, the flow separation at the rear of each blade 34 is delayed, and thus the propulsion efficiency of the propeller can be improved. .

According to this embodiment, the protruding member 36 may be disposed adjacent to the trailing edge 34b side of each blade 34. For example, assuming that the protruding members are located at the front blade side of each blade 34 or at the center of each blade 34, the flow from the front blade 34a of each blade 34 toward the rear blade 34b is a projection member ( It is disturbed by 36) and the propulsion efficiency of the propeller can be drastically reduced.

According to the present embodiment as described above, the protruding member 36 is disposed adjacent to the rear blade 34b side of each blade 34, so that the flow separation in the state that the flow passing through the rear surface of each blade 34 is not disturbed. May be delayed.

According to this embodiment, the protruding member 36 may be located within 60% of the propeller radius (R). In this connection, cavitation occurs in the region between 60% and 100% of the propeller radius R. If the protruding member 36 is located in an area exceeding 60% of the propeller radius R, strong cavitation may occur by the protruding member 36.

According to this embodiment, since the protruding member 36 is located within 60% of the propeller radius R, propulsion efficiency of the propeller can be effectively improved by delaying the flow separation without causing cavitation.

Such protruding members may be plural. In this case, the plurality of protruding members may be spaced apart from each other in the propeller radial direction.

In addition, the protruding member may have a wedge shape as shown in FIG. 3, but is not limited thereto and may have various shapes.

Although the embodiments of the present invention have been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention are within the scope of the same idea, and the addition of components. Other embodiments may be easily proposed by changing, deleting, adding, and the like, but this will also fall within the spirit of the present invention.

10: hull
30: propeller
32: Hub
34: wings
36: protruding member

Claims

In the propeller installed in the hull,
A hub rotatably coupled to the hull;
A plurality of wings spaced apart from the outer circumferential surface of the hub; And
It includes a protrusion member disposed on the rear of each wing,
The protruding members are disposed adjacent to the trailing edge of each wing,
The projecting member is characterized in that the propeller is located within 60% of the propeller radius.

The method of claim 1,
The protruding member is a plurality,
The plurality of protruding members are propellers, characterized in that spaced apart in the radial direction of the propeller.

The method of claim 1,
The protruding member has a wedge shape.

hull; And
A ship comprising the propeller according to any one of claims 1 to 3 rotatably coupled to the hull.