KR102487018B1 - Silencer - Google Patents

Abstract

A silencer is provided for absorbing noise while effectively discharging gas generated after combustion in a combustion engine or the like. The silencer includes a housing in which an accommodation space is formed and inlets and outlets through which fluid flows are formed at both ends, respectively, a sound absorbing plate closely disposed on the inner circumferential surface of the housing, and one side closely disposed with the suction plate and the other side is an accommodating space. A sound absorbing member including a perforated plate exposed to the outer circumference, formed in a hollow shape with a plurality of perforations formed on the outer circumferential surface, filled with a sound absorbing material inside, disposed along the longitudinal direction of the housing in the accommodation space, and spiral formed along the outer circumferential surface along the longitudinal direction. It includes a wing part of the shape and includes a rotating member rotatably installed by a fluid flowing in the accommodation space.

Description

Silencer {Silencer}

The present invention relates to a silencer, and more particularly, to a silencer for absorbing noise while effectively discharging gas generated after combustion in a combustion engine or the like.

In general, gases burned in various machinery and industrial sites or engines of ships flow through an exhaust pipe of the engine and are discharged through a discharge port at an end of the exhaust pipe. At this time, the exhaust gas generated after combustion contains sulfur oxides (Sox) and nitrogen oxides (NOx), which are not only harmful to the human body, but also contain a large amount of soot in the exhaust gas due to incomplete combustion. is polluted, and noise is generated due to exhaust gas, which is a problem.

Accordingly, a scrubber and an exhaust gas reduction device (SCR) are installed in the exhaust pipe to remove sulfur oxides and nitrogen oxides, and soot is removed using a spark arrestor of the silencer, and a silencer is installed in the exhaust pipe. Installing it solves the problem.

However, although the pollutants in the exhaust gas can be reduced in the above manner, they cannot be completely removed, and the exhaust gas in which the pollutants are not completely removed is directed to the hull according to atmospheric conditions. In addition, although there are a plurality of air inlets for air conditioning of the cabin in the hull, there is a problem in that exhaust gas containing pollutants is sucked through such air inlets. In addition, there is a problem that the exhaust gas is not discharged quickly and far due to flow resistance due to the installation of the silencer.

Therefore, there is a need for a device capable of discharging the exhaust gas discharged from the exhaust pipe farther from the discharge port at the end of the exhaust pipe while reducing noise caused by the exhaust gas.

Republic of Korea Patent No. 10-1204035, (2012.11.16.)

A technical problem to be achieved by the present invention is to solve this problem, and to provide a silencer for absorbing noise while effectively discharging gas generated after combustion in a combustion engine.

The technical problem of the present invention is not limited to the problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

The silencer according to the technical problem of the present invention, a housing having an accommodation space formed therein and having inlets and outlets through which fluid flows are formed at both ends, a sound absorbing plate closely disposed on the inner circumferential surface of the housing, and one side of the suction plate A sound absorbing member including a perforated plate disposed in close contact with the other side of which is exposed to the accommodation space, and formed in a hollow shape with a plurality of perforations formed on the outer circumferential surface and filled with a sound absorbing material to fill the accommodation space along the longitudinal direction of the housing. It is disposed, includes a spiral-shaped wing formed along an outer circumferential surface in the longitudinal direction, and includes a rotating member rotatably installed by a fluid flowing in the accommodation space.

A space is formed inside the wing portion, and a plurality of perforated holes penetrating the space may be formed on the surface.

The wing portion may be filled with a sound absorbing material in the space, and the perforated holes may be uniformly formed on the entire surface exposed to the accommodation space.

The silencer according to the present invention can absorb and effectively reduce the noise flowing inside the exhaust pipe, and can move the exhaust gas flowing inside through the spiral sound absorbing structure and discharge it further away through the discharge port. In particular, the silencer can not only absorb and reduce noise with a spiral sound-absorbing structure disposed at the center, but also rotate by the pressure of the exhaust gas to discharge the exhaust gas farther away so that the exhausted gas flows back into the intake port installed on the hull or the like. phenomenon can be prevented.

1 is a partially cut away perspective view of a silencer according to an embodiment of the present invention.
Figure 2 is a cross-sectional view of the silencer of Figure 1;
FIG. 3 is a partially enlarged perspective view showing part A of the silencer of FIG. 2 enlarged.
4 is an operation diagram of the silencer of FIG. 1;

Advantages and features of the present invention and methods for achieving them will become clear with reference to the detailed description of the following embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only the present embodiments make the disclosure of the present invention complete and those skilled in the art in the art to which the present invention belongs It is provided to fully inform the person of the scope of the invention, and the invention is defined only by the claims. Like reference numerals designate like elements throughout the specification.

In this specification, 'inlet' and 'outlet' may be classified based on the flow direction of gas. The 'inlet' refers to a side through which gas is introduced or a portion connected thereto, and the 'outlet' refers to a side through which gas is discharged or a portion connected thereto. The 'inlet' and the 'outlet' are respectively connected to the exhaust pipe, and the gas flowing inside the exhaust pipe may flow in through the 'inlet' and be discharged through the 'outlet'. In addition, the 'front end' and 'rear end' of the waste pipe may be divided based on the flow direction of the gas. Gas flows from the 'front end' to the 'rear end', the 'front end' being connected to the 'inlet', and the 'rear end' being connected to the 'outlet'. In addition, the silencer of the present invention will be described as being connected to an exhaust pipe through which fluid generated after combustion in a combustion engine or the like flows or is discharged as an example, and may be installed in a passage or structure through which the fluid flows.

Hereinafter, a silencer 1 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 4 .

The silencer 1 of the present invention is installed in a passage or structure such as an exhaust pipe through which fluid flows, and a sound absorbing member 20 is closely disposed therein to reduce noise. In particular, in the silencer 1 of the present invention, not only the sound absorbing member 20 is closely disposed on the inner circumferential surface of the housing 10 forming the exhaust pipe, but also the rotating member 30 disposed in the center of the housing 10 also reduces noise. It can absorb and effectively reduce noise.

In addition, in the silencer 1 of the present invention, the rotating member 30 disposed inside the housing 10 rotates by the pressure of the exhaust gas flowing in the accommodation space 13, and the exhaust gas flows through the spiral wing portion. It flows while rotating along (32) so that it can be discharged farther through outlet (12).

Hereinafter, a silencer according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3 .

1 is a partially cut away perspective view of a silencer according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the silencer of FIG. 1, and FIG. 3 is a partially enlarged perspective view of a portion A of the silencer of FIG.

First, referring to FIGS. 1 and 2, the silencer 1 according to an embodiment of the present invention is disposed in close contact with a housing 10 having both ends open and connected to an exhaust pipe, and an inner circumferential surface of the housing 10 to reduce noise. It includes a sound absorbing member 20 for absorbing and a rotating member 30 disposed in the accommodating space 13 of the housing 10 and rotatably installed by the exhaust gas flowing therein to discharge the exhaust gas far away.

Specifically, the silencer 1 according to an embodiment of the present invention includes a housing 10 having an accommodation space 13 formed therein and inlets 11 and outlets 12 through which fluid flows at both ends, respectively. And, a sound absorbing member 20 including a sound absorbing plate 21 closely disposed on the inner circumferential surface of the housing 10 and a perforated plate 22 having one side in close contact with the sound absorbing plate and the other side exposed to the receiving space 13, , It is formed in a hollow shape with a plurality of perforations 30a formed on the outer circumferential surface, the sound absorbing material 31 is filled therein, and disposed along the longitudinal direction of the housing 10 in the accommodation space 13, formed along the outer circumferential surface in the longitudinal direction. It includes a spiral-shaped wing portion 32 and includes a rotating member 30 rotatably installed by the fluid flowing in the accommodation space 13.

The housing 10 forms the body of the silencer 1 and is connected to communicate with an exhaust pipe through which a fluid such as exhaust gas generated after combustion in a combustion engine flows. The housing 10 is formed in the shape of a hollow pipe with an accommodation space 13 formed therein, and an inlet 11 and an outlet 12 are formed open at both ends, respectively, and connected to an exhaust pipe, so that the exhaust flows inside the exhaust pipe. Gas can flow along the longitudinal direction through the inner accommodating space (13). At this time, the housing 10 has a sound absorbing member 20 and a rotating member 30 disposed therein, and a portion of the exhaust gas and noise introduced through the inlet 11 flows through the receiving space 13 while the sound absorbing member 20 ) and the rotating member 30, and the rest may be discharged through the outlet 12.

The sound absorbing member 20 is for reducing noise flowing inside the exhaust pipe, and is formed to extend in the longitudinal direction of the housing 10 and is placed in close contact with the inner circumferential surface of the housing 10 . The sound absorbing member 20 is composed of a sound absorbing plate 21 and a perforated plate 22 that can effectively absorb noise introduced into the housing 10 . The sound absorbing plate 21 extends in the longitudinal direction of the housing 10 and is disposed in close contact with the inner circumferential surface of the housing 10 . In addition, the perforated plate 22 is formed in the form of a thin plate in which a plurality of perforated holes 22a are spaced apart, so that one side is exposed to the accommodation space 13 and the other side may be disposed so as to be in close contact with the sound absorbing plate 21. The sound absorbing member 20 including the sound absorbing plate 21 and the perforated plate 22 is bent and refracted according to the shape of the inner circumferential surface of the housing 10, and may be placed in close contact with the inner circumferential surface of the housing 10, and the accommodation space 13 ) can effectively absorb and reduce the noise of the exhaust gas flowing along.

Meanwhile, inside the housing 10, the rotating member 30 may be spaced apart from the sound absorbing member 20 and disposed in the center of the accommodation space 13.

The rotating member 30 is for absorbing the noise of the exhaust gas flowing inside the housing 10 and moving it away from the outlet 12, and is rotatably installed inside the housing 10 and includes a sound absorbing material 31 and wings. It includes part 32. Although not shown in the drawings, the central axis of the rotating member 30 formed in the longitudinal direction is rotatably fixed to the housing 10 . The rotating member 30 is formed in a hollow shape with a plurality of perforated holes 30a formed on the outer circumferential surface, and both ends facing the inlet 11 and the outlet 12 are formed in a cone or hemispherical shape, respectively. In other words, the rotating member 30 is formed to extend along the longitudinal direction of the housing 10 in the shape of a hollow pipe with an empty space formed therein, and both ends adjacent to the inlet 11 and the outlet 12 are sealed. It is formed in a cone shape or semicircular shape and is disposed in the receiving space 13 . The semicircular shape is a shape in which a portion of a sphere is cut, and the shape of both ends of the rotating member 30 is not necessarily limited to this shape, and the oval shape is formed by halving in half or formed in a curved streamlined shape. It can include various shapes that can reduce flow resistance. The rotating member 30 has a plurality of perforated holes 30a passing through the empty space and the receiving space 13 spaced apart on the outer circumferential surface, and the sound absorbing material 31 is filled therein. Such a rotating member 30 is disposed along the longitudinal direction of the housing 10 in the accommodating space 13 and is spaced apart from the sound absorbing member 20 in the center of the accommodating space 13 to be spaced apart from the sound absorbing member 20 A flow space in which fluid flows may be formed in the space, that is, the accommodating space 13 . While the exhaust gas flowing inside the housing 10 flows between the rotating member 30 and the sound absorbing member 20, noise is absorbed by the rotating member 30 and the sound absorbing member 20, thereby maximizing the noise reduction effect. . In particular, the rotation member 30 includes a wing portion 32 formed along the longitudinal direction on the outer circumferential surface, so that the fluid flowing in the accommodation space 13 can be moved far away.

The wings 32 are for sending the exhaust gas flowing in the accommodation space 13 while rotating, and sending it away, and may be formed in a spiral shape along the outer circumferential surface in the longitudinal direction of the rotating member 30 . The wings 32 are disposed so as to surround the outer circumferential surface of the rotating member 30 diagonally or obliquely, and are formed such that the spiral shape is formed at regular intervals. That is, the wing portion 32 is formed to protrude from the outer circumferential surface of the rotating member 30 and is formed in a shape as shown in the drawing, a space is formed inside, and a plurality of wings penetrating the space and the receiving space 13 are formed on the surface. A perforated hole 32a is formed.

In more detail with reference to FIG. 3 , the wing portion 32 may be formed by folding a perforated plate facing each other with a space formed therein, and the folded portion may be formed in a streamlined shape. In addition, the sound absorbing material 320 is filled in the space of the wings 32, and a plurality of perforated holes 32a exposed to the accommodation space 13 are uniformly formed on the entire surface to form dimples. The perforated hole 32a formed in the wing portion 32 may form dimples regularly formed by the sound absorbing material 320 filled therein, and the end portion adjacent to the sound absorbing member 20 is formed in a streamlined shape to form the wing portion 32 Turbulence can occur in the exhaust gases traveling on board. The exhaust gas flowing in the accommodation space 13 rides the outer circumferential surface of the wing portion 32 and flows toward the outlet 12, while turbulent flow is generated by the sound absorbing material 320 and the perforated hole 32a filled therein, so resistance can be reduced. . In particular, the exhaust gas not only travels while rotating along the wings 32 by the rotation of the rotating member 30, but also can be discharged farther when discharged to the outlet 12 due to the generation of turbulence. This will be described in more detail with reference to FIG. 4 .

Meanwhile, the perforations 32a formed in the wing portion 32 may be formed regularly or irregularly over the entire surface, and the depth of the perforation 32a forming the dimples may be adjusted by adjusting the thickness of the wing portion 32. . In addition, the diameter of the perforated hole 32a formed in the wing portion 32 may be appropriately adjusted.

Hereinafter, with reference to FIG. 4, the operation process of the silencer of the present invention will be described in detail.

4 is an operation diagram of the silencer of FIG. 1;

Referring to FIG. 4 , the silencer 1 of the present invention is connected to an exhaust pipe, and exhaust gas flowing inside the exhaust pipe is introduced through the inlet 11 . Exhaust gas introduced into the housing 10 may move along the longitudinal direction of the housing 10 through the accommodation space 13 . At this time, the wing 32 and the rotating member 30 may rotate while the exhaust gas introduced through the inlet 11 pushes the wing 32 arranged in an oblique line. The exhaust gas can effectively reduce noise by increasing the area in contact with the sound absorbing member 20, the rotating member 30, and the wing portion 32 capable of absorbing noise, and the wing portion adjacent to the sound absorbing member 20 ( 32) The flow resistance can be reduced by the streamlined structure of the tip. In particular, while the exhaust gas moves toward the outlet 12 along the outer circumferential surface of the rotating wing 32, turbulent flow is generated like a dimple by the perforated hole 32a formed on the outer circumferential surface of the wing 32, thereby reducing flow resistance. can The exhaust gas can be discharged farther when discharged to the outlet 12 by rotating along the outer circumferential surface of the wing portion 32 in which the end portion is formed in a streamlined shape and the perforated hole 32a is formed inside the housing 10. There are features.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art to which the present invention pertains know that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. You will understand. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting.

1: silencer 10: housing
11: inlet 12: outlet
13: accommodation space 20: sound absorbing member
21: sound absorption plate 22: perforated plate
30: rotating member 30a: perforation
31: sound absorbing material 32: wing
32a: perforation 320: sound absorbing material

Claims (3)

A housing having an accommodation space formed therein and having inlets and outlets through which fluid flows at both ends, respectively;
a sound absorbing member including a sound absorbing plate closely disposed on an inner circumferential surface of the housing and a perforated plate having one side closely disposed on the sound absorbing plate and the other side exposed to the accommodation space;
It is formed in a hollow shape with a plurality of perforations formed on an outer circumferential surface, a sound absorbing material is filled therein, disposed in the accommodation space along the longitudinal direction of the housing, and includes a spiral-shaped wing formed along the outer circumferential surface in the longitudinal direction, the accommodation space Including a rotating member rotatably installed by the fluid flowing through,
The wing portion is formed by folding a perforated plate having a plurality of perforations on the surface with a space therebetween, and a sound absorbing material is filled in the space formed therein,
The plurality of perforations pass through the space but are uniformly formed on the entire surface of the wing exposed to the accommodation space to form dimples. delete delete

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