KR20140135498A - Vessel Having Duct Unit - Google Patents

Abstract

The present invention relates to a ship having a duct unit, a hull having a plurality of coupling protrusions protruding leftward and rightward from the rear of the propeller at a rear end thereof, and at least a part of the hull having a predetermined length, Disclosed is a ship having a duct unit including a duct unit coupled to the coupling protrusion to form a communication space through which seawater passes in front and rear together with the projections.

Description

[0001] VESSEL Having Duct Unit [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a ship having a duct unit, and more particularly, to a ship having a duct unit coupled to a duct unit at the rear of the ship to increase the thrust of the ship.

A number of studies have been conducted on the construction of a thrust generator using a propeller to increase the thrust with the same propeller. Especially, a ship having a separate duct in front of the propeller has been developed variously.

Generally, a ring-shaped duct is installed in front of the propeller to improve the efficiency of the hull and the propulsion efficiency. In the case of such a duct, it is widely used as an energy saving device to recover the energy lost when the hull is advanced and to obtain energy saving effect.

By providing a duct disposed in front of the propeller at the rear of the hull, the thrust can be increased by adjusting the speed and direction of the seawater delivered to the propeller.

Previously developed ducts installed a tubular duct between the stern of the hull and the propeller-type propeller, suppressing the separation around the hull in front of the propeller and increasing thrust. In addition, since the propeller type propeller is rotating, the angle of attack depends on the vertical and horizontal positions of the hull, and asymmetric ducts have been developed around the hull in order to solve the problem of shifting the center of thrust.

However, in such a case, it is difficult to attach to the hull, and it was difficult to install the duct considering the capacity of the propeller itself. In addition, there is a problem that the duct installed has a weak durability by providing the duct directly to the hull itself having a curved outer surface.

In addition, since the duct is formed by a single member, it is necessary to individually form a duct according to the capacity of the propeller or the size of the hull and to attach the duct to the hull.

Korean Patent Publication No. 10-2012-0063244

The present invention has been made to solve the problems of the conventional vessel, and has a coupling protrusion protruded to the left and right at the rear, and a duct unit connected to the coupling protrusion, and selectively controlling the size and shape of the communication space according to the propeller. Thereby increasing the thrust of the propeller.

In order to solve the above-mentioned problems, a ship having a duct unit according to the present invention comprises a hull having a plurality of coupling protrusions protruding left and right in front of a propeller at a rear end thereof, and a hull having a predetermined length, And a duct unit coupled to the coupling protrusion so as to form a communication space through which the seawater passes back and forth together with the coupling protrusions.

Further, the duct unit may be integrally formed, and both ends may be respectively coupled to the coupling protrusions on the left and right sides of the hull.

In addition, the duct unit may be formed so that cross sections or shapes of the left and right sides of the communication space are different from each other with respect to the center line of the hull.

In addition, the duct unit may be coupled to the coupling protrusion such that the center line crosses the center line of the hull.

Further, the duct unit may be composed of a plurality of members and connected to each other.

The duct unit may include a first structure in which one end of the duct unit is coupled to the coupling protrusion at the left side of the hull, a first structure along the length direction is coupled to the coupling protrusion at the right side of the hull, And a second structure coupled to the other end of the structure.

The duct unit may include a first structure in which one end of the duct unit is coupled to one of the plurality of coupling protrusions on the left side of the hull and the other end is coupled to the other of the plurality of coupling protrusions on the left side of the hull, And a second structure in which one end along the longitudinal direction is coupled to one of the plurality of coupling protrusions on the right side of the hull and the other end is coupled to the other one of the plurality of coupling protrusions on the right side of the hull .

In addition, the first structure and the second structure may have different sizes or shapes.

The coupling protrusions may be formed to be asymmetric about the hull.

The ship having the duct unit according to the present invention has the following effects.

First, a duct unit disposed at the front of the propeller at the rear of the hull and integrally formed with the hull and coupled to the coupling protrusions and coupling protrusions protruded to the left and right of the hull forms a communication space, There is an advantage that the thrust of the propeller can be increased by adjusting the size and shape of the communication space.

Second, since the duct unit is composed of a plurality of members and connected to each other, there is an advantage that the size of the formed communication space can be selectively controlled.

Third, the duct unit includes a first structure coupled to the left side of the hull and a second structure coupled to the right side of the ship, and the first structure and the second structure have different shapes or sizes, The right asymmetric communication space can be formed.

Fourthly, when the duct unit is coupled to the coupling protrusion, the center line of the duct unit is arranged so as to be deflected with respect to the center line of the hull, and the flow rates of the seawater supplied to the propeller from the right and left sides, This has the advantage of increasing.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

1 is a view showing a state where a duct unit is coupled to a hull in a ship having a duct unit according to a first embodiment of the present invention;
FIG. 2 is a view showing a state in which a duct unit is coupled to the ship of FIG. 1;
Fig. 3 is a view showing a state in which the hull of the ship of Fig. 1 is manufactured to have a coupling protrusion;
FIG. 4 is a view showing a state in which the center line of the duct unit in the ship of FIG. 1 is deflected and arranged;
5 is a view showing a state in which the duct unit is coupled to the hull so that the center line of the duct unit and the center line of the hull intersect with each other in the ship of Fig. 1;
FIG. 6 is a view showing a state in which the duct unit of the ship of FIG. 1 is composed of a plurality of members;
FIG. 7 is a view showing a state where the duct unit is coupled to the coupling protrusion in the ship of FIG. 6;
8 is a view showing a configuration of a duct unit according to a second embodiment of the present invention; And
9 is a view showing a state in which the duct unit of FIG. 7 is coupled to the hull;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

In general, various devices are provided to increase the propulsion efficiency of the propeller 110 in a ship. In particular, when the propeller-type propeller 110 is provided, a duct unit 200 for adjusting the direction of the seawater introduced into the propeller 110 .

As the duct unit 200 is provided, the thrust can be increased by controlling the flow velocity of the seawater flowing into the propeller.

First Embodiment

First, a ship having a duct unit 200 according to a first embodiment of the present invention will be schematically described with reference to FIGS. 1 to 3. FIG.

1 is a view showing a state in which a duct unit 200 is coupled to a hull 100 in a ship provided with a duct unit 200 according to a first embodiment of the present invention. FIG. 3 is a view showing a state in which the ship 100 of the ship of FIG. 1 is manufactured so as to have the coupling protrusion 120. FIG.

A structure of a ship having a duct unit 200 according to a first embodiment of the present invention will now be described with reference to the drawings. First, a ship 100 having a coupling protrusion 120 protruding left and right, And a duct unit (200) coupled to form a communication space (T).

Specifically, a plurality of coupling protrusions 120 are provided at the rear of the hull 100 so as to protrude leftward and rightward from the front of the propeller 110. Here, each of the engaging projections 120 is provided together with the frame 102 of the hull during manufacture of the hull 100, and is formed integrally with the hull 100.

In the first embodiment of the present invention, the coupling protrusions 120 are formed on the left and right sides, respectively, and may have a streamlined shape in cross section. Also, in this embodiment, the coupling protrusions 120 may be arranged to be symmetrical about the hull 100 and have the same length.

However, the coupling protrusions 120 may be formed to have different shapes or lengths on the left and right sides.

The duct unit 200 has a predetermined length and is at least partly bent along the longitudinal direction and is coupled to the coupling protrusion 120 to form a communication space T through which the seawater is passed back and forth together with the coupling protrusion 120 .

Specifically, the duct unit 200 is configured to surround a part of the rear end of the hull 100 and is disposed on the left and right sides with respect to the center line L1 of the hull, and is coupled to the coupling protrusion 120.

That is, the duct unit 200 is coupled to the coupling protrusion 120 to form a communication space T having a cylinder, a trunk, or a multi-tubular cross-sectional area so that the passing sea water is transmitted to the propeller 110 .

In the present embodiment, the duct unit 200 is integrally formed, and both ends are bent so as to face each other, and both ends are fixedly coupled to the coupling protrusions 120 provided on the right and left sides of the hull 100, respectively. Here, the cross section of the duct unit 200 may be formed in a streamline shape like the coupling protrusion 120, or may be formed in a plate shape.

As the duct unit 200 is formed, the coupling protrusions 120 and the duct unit 200 are formed so that seawater can pass through the front of the propeller 110. The width of the coupling protrusions 120 and the duct unit 200, As shown in FIG.

Since the communication space T formed by the duct unit 200 and the coupling protrusion 120 is located in front of the propeller at the stern, the angle of attack of the seawater flowing into the propeller 110 is increased to increase the propulsion force of the ship. In addition, the efficiency of the propellant 110 can be increased by accelerating seawater passing through the communication space T and transferring it to the propeller 110.

2, the duct unit 200 is coupled to the coupling protrusion 120 according to the first embodiment of the present invention. First, the duct unit 200 has a predetermined width And both ends are bent so that both ends face each other.

Each of the opposite ends of the duct unit 200 is coupled to each of the coupling protrusions 120 formed at the rear left and right sides of the hull 100. At this time, the duct unit 200 and the coupling protrusions 120 may be coupled to each other through welding.

Since the duct unit 200 is coupled to the coupling protrusions 120 provided on the right and left sides of the hull 100, the communication space T formed by the duct unit 200 and the coupling protrusions 120 is formed at the center line L1) and has an elliptical cross section.

Accordingly, the seawater transmitted to the propeller 110 during the propulsion of the ship is accelerated through the communication space T and is transmitted to the propeller 110.

3, the coupling protrusion 120 is integrally formed with the hull 100 at the rear end of the hull 100. First, as shown in FIG. 3 (a) 100, the frames 102, which become the skeleton, are constructed first.

Here, a plurality of frames 102 are fixedly coupled to each other and a part of the frame 102 protrudes outside the hull 100 when the hull 100 is pulled out. A portion of the frame 102 designed to protrude out of the hull 100 is the engaging projection 120.

Thus, the frame 102 is assembled such that the coupling protrusion 120 protrudes out of the hull 100 in design.

3 (b), the frame 104 of the hull 100 is fixed to the outside of the hull 100 so as to enclose each frame 102 after completing the skeleton of the hull 100 with a plurality of frames 102 .

At this time, when the plate 104 is engaged with the frame 102, the coupling protrusions 120 are coupled so as to project leftward and rightward with respect to the center line L1 of the hull.

Through the above process, the hull 100 is assembled and the coupling protrusion 120 projecting laterally from the rear of the assembled hull 100 is formed integrally with the hull 100. Since the coupling protrusion 120 is integrally formed with the hull 100, the durability of the coupling protrusion 120 is increased and coupling between the duct unit 200 and the coupling protrusion 120 can be more convenient.

Next, referring to FIG. 4, a state in which the duct unit 200 is deflected from the rear of the hull 100 will be described.

Fig. 4 is a view showing a state in which the center line L2 of the duct unit in the ship of Fig. 1 is deflected.

The communication space T formed by coupling the duct unit 200 to the coupling protrusion 120 may be formed so that the left and right side end surfaces or shapes of the communication space T are different from each other with respect to the center line L1 of the hull.

The engaging protrusions 120 protruding from the left and right sides of the hull 100 may be formed to have different shapes or lengths.

More specifically, the duct unit 200 is formed in a different shape to the left and right, and is coupled to the coupling protrusion 120. The communication space T formed by the coupling protrusion 120 and the duct unit 200 or the center line L2 of the duct unit is arranged to be deflected to one side with respect to the center line L1 of the hull.

In the present embodiment, the shape of the left and right sides of the duct unit 200 is formed differently so that the cross-sectional areas of the communication space T formed with the coupling protrusions 120 are different from each other.

As the duct unit 200 is coupled to the coupling protrusion 120 asymmetrically with respect to the center line L1 of the hull, the velocity and direction of the seawater passing through the communication space T is greater than the center line L1 of the hull, To the propeller 110 asymmetrically.

Generally, propeller-type propeller 110 is most commonly used in consideration of efficiency and cost. However, in the case of a propeller, an angle of attack varies depending on positions of the propeller about the rotational axis of a propeller, The center moves.

However, since the communication space T formed as the duct unit 200 is coupled to the coupling protrusion 120 asymmetrically to the left and right is disposed to be eccentric with respect to the center line L1 of the hull, The speed of the seawater passing through the left and right sides will be different from each other.

That is, the seawater passing through the communication space T gives a right-left asymmetric velocity distribution to the propeller-type propeller 110 rotating left and right through the communication space T, thereby increasing the efficiency of the propeller 110 And the movement of the thrust center is reduced to increase the straightness.

When the center line L2 of the duct unit is disposed eccentrically to the right from the center line L1 of the hull as shown in the drawing, the communication space T on the right side of the center line L1 of the hull is positioned on the left side of the communication space T ). ≪ / RTI > Accordingly, the speed of the seawater passing through the left communicating space T is faster than the speed of the seawater passing through the right communicating space T, thereby increasing the efficiency of the propeller 110.

Next, referring to FIG. 5, a state in which the duct unit 200 is twisted at the rear of the ship 100 will be described as follows

5 is a view showing a state in which the duct unit 200 is coupled to the hull 100 so that the center line L2 of the duct unit and the center line L1 of the hull intersect each other in the ship of Fig.

When the duct unit 200 is coupled to the coupling protrusion 120 as shown in the drawing, the duct unit 200 is coupled in a twisted state with respect to the center axis of the ship 100. Specifically, the center line L2 of the duct unit is coupled so as to cross the center line L1 of the hull, and the shape or cross section of the communication space T is formed differently on the basis of the center line L1 of the hull.

In this embodiment, as shown in the drawing, the center line L2 of the duct unit is rotated counterclockwise by a predetermined angle with respect to the centerline L1 of the hull.

The cross sectional area of the communication space T formed as the duct unit 200 is coupled to the coupling protrusion 120 in a state where the duct unit 200 is twisted with the center line L1 of the hull can be formed differently, T is transmitted to the propeller 110 at a different velocity with respect to the centerline L1 of the hull.

In the present embodiment, the duct unit 200 is coupled with the center line rotated in the clockwise direction with respect to the center line L1 of the hull, but this can be selectively adjusted in accordance with the rotational direction of the propeller and the rotational speed have.

Next, a modified form of the duct unit 200 will be described with reference to FIGS. 6 and 7. FIG.

FIG. 6 is a view showing a state in which the duct unit 200 is composed of a plurality of members in the ship of FIG. 1, and FIG. 7 is a view showing a state where the duct unit 200 is coupled to the coupling protrusions 120 Fig.

The duct unit 200 according to the embodiment of the present invention may be constituted by one member as described above, or alternatively may be constituted by a plurality of members.

Specifically, the duct unit 200 has a plurality of members connected to each other, and at least a part of the duct unit 200 is coupled to the coupling protrusions 120 to form a communication space T. The duct unit 200 is formed by connecting the plurality of members to each other. Thus, the shape and size of the duct unit 200 can be selectively adjusted. In particular, the shape and size of the duct unit 200 can be adjusted So that the duct unit 200 can be formed.

Specifically, in this embodiment, as shown in the drawing, the duct unit 200 includes a pair of the first structure 210 and the second structure 220, which are coupled to the coupling protrusions 120, Thereby forming a communicating space T in the form of a ring together with the protrusion 120.

Referring to the drawings, the first structure 210 and the second structure 220 will be described with reference to the drawings. First, the first structure 210 is elongated, (Not shown).

The second structure 220 is elongated in the same manner as the first structure 210 and has one end in the longitudinal direction coupled to the coupling protrusion 120 on the right side of the hull 100, And is at the other end.

Here, the first structure 210 and the second structure 220 may have the same shape or different shapes or sizes.

The first structure 210 and the second structure 220 are connected to each other and are coupled to the coupling protrusions 120 at the left and right sides of the hull 100 to form a communication space T, To the propeller (110).

The first structure 210 and the second structure 220 may be separately provided to form the duct unit 200 so that the size and shape of the communication space T can be selectively controlled when coupled with the coupling protrusion 120 .

The first structure 210 and the second structure 220 may have different shapes and sizes so that the communication space T may be formed asymmetrically with respect to the center line L1 of the ship. Accordingly, it is possible to prevent the propulsion efficiency of the hull 100 from decreasing even if an asymmetric rebound occurs as the propeller of the propeller 110 rotates.

Since the duct unit 200 is constituted by a plurality of members as described above, the shape and size of the duct unit 200 can be adjusted to fit the hull 100, and the duct unit 200 200).

Second Embodiment

Next, a second embodiment of a ship according to the present invention will be described with reference to FIGS. 8 and 9. FIG.

FIG. 8 is a view showing the construction of a duct unit 200 according to a second embodiment of the present invention, and FIG. 9 is a view showing a state where the duct unit 200 of FIG. 7 is coupled to the ship 100.

8, a plurality of coupling protrusions 120 are provided. However, unlike the first embodiment, at least one of the coupling protrusions 120 is provided on the left and right sides of the hull 100, respectively. That is, a plurality of coupling protrusions 120 protruding to the left side of the hull 100 and a plurality of coupling protrusions 120 protruding to the right side of the hull 100 are disposed and spaced apart from each other in the vertical direction.

Specifically, in the second embodiment, as shown in FIG. 7, a pair of coupling protrusions 120 are provided on the left and right sides of the hull 100, respectively. Here, each of the engaging projections 120 is configured to have the same size and shape, but may be configured to have different sizes and shapes.

In describing the present embodiment, the coupling protrusions 120 are divided into first coupling protrusions 122 to a fourth coupling protrusion 128, which will be described below.

The duct unit 200 is composed of a plurality of members rather than a single member. In the second embodiment, the duct unit 200 is provided as a pair of the first structure 210 and the second structure 220, And is coupled to the engaging projection 120 on the left and right sides.

Specifically, the first structure 210 has one end along the longitudinal direction coupled to one of the plurality of coupling protrusions 120 on the left side of the hull 100, and the other end coupled with the plurality of coupling protrusions 120 on the left side of the hull 100, Lt; RTI ID = 0.0 > 120 < / RTI > Here, the first structure 210 is partly bent along the longitudinal direction, and both ends thereof are coupled to the coupling protrusions 120.

In the second embodiment of the present invention, the coupling protrusions 120 are provided on the right and left sides of the hull 100, respectively. The first coupling protrusions 122 and the second coupling protrusions 124 are formed on the left side of the hull 100, . The first structure 210 is connected to the first coupling protrusion 122 at one end and the second coupling protrusion 124 at the other end at the left side of the hull 100 to form a left communication space T1 .

One end of the second structure 220 along the longitudinal direction is coupled to one of the plurality of coupling protrusions 120 on the right side of the hull 100 and the other end is coupled to the plurality of coupling protrusions 120 ). ≪ / RTI >

Specifically, in the second embodiment, the coupling protrusion 120 has a pair of third coupling protrusions 126 and a fourth coupling protrusion 128 on the right side of the hull 100, One end is coupled to the third engaging projection 126 and the other end is coupled to the fourth engaging projection 128 to form a right communicating space T2

The communicating spaces T formed by the coupling protrusions 120 and the duct unit 200 are formed on the left and right sides of the center line L1 of the hull, unlike the first embodiment.

The left communicating space T1 and the right communicating space T2 thus formed pass seawater and transfer the seawater to the propeller 110 disposed at the rear.

The first structure 210 and the second structure 220 are coupled to the respective coupling protrusions 120 provided on the right and left sides of the hull 100 so that the communication space formed in the left and right sides of the hull 100 T1, and T2, respectively.

When the seawater passing through the right communicating space T2 has a slower flow rate than the left communicating space T1 of the hull 100 by increasing the size of the second structure 220, The cross sectional area of the tube T2 can be made larger.

That is, by controlling the shape and size of the first structure 210 and the second structure 220, the flow velocity of the seawater supplied from the left and right sides of the ship 100 to the propeller 110 is adjusted differently, .

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

100: Hull 110: Propeller
120: coupling protrusion 200: duct unit
210: first structure 220: second structure
T: Communication space

Claims (9)

A hull having a plurality of coupling protrusions protruding leftward and rightward from the rear of the propeller; And
A duct unit having a predetermined length and at least a part of which is bent along the longitudinal direction and is coupled to the coupling protrusion so as to form a communication space through which the seawater passes forward and backward together with the coupling protrusions; And a duct unit including the duct unit. The method according to claim 1,
The duct unit includes:
Wherein the duct unit is integrally formed with both ends of which are coupled to the coupling protrusions on the right and left sides of the hull. The method according to claim 1,
The duct unit includes:
Wherein the duct unit is formed such that cross-sections or shapes of left and right sides of the communication space are different from each other with respect to a center line of the hull. The method according to claim 1,
The duct unit includes:
And a duct unit coupled to the coupling protrusion so that the center line crosses the center line of the hull. The method according to claim 1,
The duct unit includes:
A ship comprising a plurality of members and connected to each other. The method according to claim 1,
The duct unit includes:
A first structure in which one end along the longitudinal direction is coupled to the coupling protrusion at the left side of the hull; And
A second structure having one end along the longitudinal direction coupled to the coupling protrusion at the right side of the hull and the other end coupled to the other end of the first structure; And a duct unit including the duct unit. The method according to claim 1,
The duct unit includes:
A first structure in which one end along the longitudinal direction is coupled to one of the plurality of coupling protrusions on the left side of the hull and the other end is coupled to the other one of the plurality of coupling protrusions on the left side of the hull; And
A second structure in which one end along the longitudinal direction is coupled to one of the plurality of coupling protrusions on the right side of the hull and the other end is coupled to the other one of the plurality of coupling protrusions on the right side of the hull; And a duct unit including the duct unit. 8. The method according to claim 6 or 7,
The first structure and the second structure may be formed of a material,
The duct having a different size or shape. The method according to claim 1,
The engaging projection
And a duct unit formed to be asymmetric in the lateral direction around the hull.

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