KR101173491B1 - Noiseproof structure for air exhaust duct of railway vehicle - Google Patents

Abstract

The present invention relates to a noise preventing body for an air discharge duct of a railway vehicle, which is provided in a tubular shape having an inlet and an outlet, and the inlet is installed to correspond to the outlet of the air discharge duct of the railway vehicle, and the outlet is provided on the side thereof. A main body having first and second side outlets facing each other such that air discharged to the air is dispersed and discharged; The central portion is provided in a plate shape having a bent portion bent to protrude to one side, has a pair of inclined surfaces, and a portion of the air passing through the main body is installed in the main body and intersects the first along the pair of inclined surfaces. A guide member made of a porous material for guiding each of the second side outlets to be discharged and allowing the rest to be discharged to the outlets; And a plurality of grills provided at the first and second side outlets to uniformly flow the air discharged to the first and second side outlets and to prevent inflow of zeolites.
According to the present invention, there is provided a guide member for guiding and passing the air discharged to the outlet of the air discharge duct in three directions to be discharged to the outlet of the main body and the first and second side outlets, respectively, through which air is discharged. By increasing the cross-sectional area, it is possible to greatly reduce the discharge noise of air, and by reducing the flow of air discharged perpendicularly to the ground through the air discharge duct of the condenser provided above and below of the railway vehicle, The amount can be greatly reduced.

Description

Noise prevention structure for air exhaust duct of railway vehicle {Noiseproof structure for air exhaust duct of railway vehicle}

The present invention relates to a noise preventing body for an air discharge duct of a railroad car, and more particularly, is installed in the air exhaust duct of a railroad car to block the generation of discharge noise by air discharged to the outlet of the air exhaust duct, The present invention relates to a noise suppressor for an air exhaust duct of a railroad car, which can greatly reduce the amount of dust scattered from the ground by the air discharged from the air exhaust duct provided in the ground direction.

In general, a railway vehicle is provided with various air discharge ducts, such as a duct for discharging the contaminated air in the cabin to the outside, a duct for discharging the high-temperature air used for cooling the condenser of the air conditioning system.

The air discharge duct discharges air to the discharge port provided at the end thereof, and the discharge noise is generated while the air passes at a high speed to the discharge port of a limited narrow area. Such exhaust noise has a problem of causing discomfort to the passengers of the cabin or platform.

And, as shown in Figure 1, in order to discharge the high-temperature air used for cooling the condenser installed in the upper and lower (rail) of the railroad car is connected to the condenser fan 10 to be provided toward the lower ground (GD) The duct 20 discharges air to the outlet 21 facing the ground GD. The air discharged to the outlet 21 of the air discharge duct 20 provided toward the ground GD is thus ground GD. Strong impact on the phase will cause dust on the ground GD to scatter.

Such scattered dust greatly pollutes the air in the platform or the area passing through the railway vehicle, causing a great inconvenience for passengers in the platform or residents of the corresponding area.

On the other hand, in recent years, in order to reduce the weight of the railroad car and compactly design the railroad car, it is a trend to reduce the number of equipped with a large capacity to provide a fan for providing power of the air discharge through the air discharge duct. As such, when the fan is provided in a large capacity, the amount of air discharged per unit time through the air discharge duct connected to the fan increases greatly. Accordingly, if the outlet size of the air discharge duct is not increased, the air flow rate through the outlet is Increasingly, the above-mentioned problems of air emission noise and dust scattering become more prominent.

However, large changes in the size of the outlet of the air exhaust duct are contrary to the objectives of the compact design and are not very easy due to interference problems with other devices provided in the railway vehicle. Therefore, there is a need for a method that can solve the above-described problems of air discharge noise or dust scattering without greatly changing the size of the outlet of the air discharge duct.

In order to solve the problems as described above, the present invention can increase the area of the area where the air is discharged without changing the size of the discharge port of the air discharge duct, the air discharged to the discharge port of the air discharge duct in multiple directions An object of the present invention is to provide a noise preventing body for an air discharge duct of a railway vehicle that can be dispersed.

In order to solve the above problems, the noise preventing body for the air discharge duct of the railway vehicle according to the present invention is provided in a tubular shape having an inlet and an outlet, the inlet corresponds to the outlet of the air discharge duct of the railway vehicle A main body having first and second side outlets facing each other such that air discharged to the discharge port is dispersed and discharged; The central portion is provided in a plate shape having a bent portion bent to protrude to one side, has a pair of inclined surfaces, and a portion of the air passing through the main body is installed in the main body and intersects the first along the pair of inclined surfaces. A guide member made of a porous material for guiding each of the second side outlets to be discharged and allowing the rest to be discharged to the outlets; And a plurality of grills provided at the first and second side outlets to uniformly flow the air discharged to the first and second side outlets and to prevent inflow of zeolites.

The porous material constituting the guide member may be provided with a mesh of steel or an alloy thereof.

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The noise preventing body for the air discharge duct of the railway vehicle, a plurality of through-holes are formed to equalize the flow of air discharged to the outlet and prevent the inflow of the headstone, the porous plate is installed in the outlet; can do.

The bent portion of the guide member may be formed in the guide member so that the position inside the main body is biased to one side of the outlet when the air discharged to the outlet is discharged to one side of the outlet.

According to the noise preventing body for the air discharge duct of the railway vehicle of the present invention, the air discharged to the discharge port of the air discharge duct is distributed in three directions to guide and pass through the outlet of the main body and the first and second side outlet, respectively. The guide member is provided so that the air is discharged evenly through the outlet and the first and second side outlets, thereby increasing the passage cross-sectional area where the air is discharged, thereby greatly reducing the noise of the air discharge.

In addition, as the air discharge direction is dispersed by the guide member, through the air discharge duct provided on the upper and lower sides of the railway vehicle to greatly reduce the flow of air discharged perpendicular to the ground by the discharge of the dust scattered from the ground due to the discharge air The amount can be minimized.

And when the air discharged to the discharge port is discharged to one side of the discharge port unbiased, the position of the bent portion, which is a reference for distributing the discharge air to the first and second side outlet port is formed on the guide member to be discharged to the one side, discharge, Air can be uniformly distributed and guided to the first and second side outlets.

In addition, the foreign matter contained in the discharged air is filtered out by these guide members and naturally discharged to the first and second side outlet outlets, thereby improving the durability and maintainability of the apparatus.

In addition, since the outlet and the first and second side outlets are provided with a perforated plate and a grill, respectively, the flow of air discharged through this can be made more uniform, thereby further reducing air discharge noise and dust scattering amount. By blocking the inflow, it is possible to prevent the device from being damaged by the zeolite.

1 is a view schematically showing a state in which air is discharged through an air discharge duct of a condenser provided above and below a railway vehicle;
Figure 2 is a perspective view of the noise suppressor for the air discharge duct of the railway vehicle according to a preferred embodiment of the present invention,
3 is a cross-sectional view of AA shown in FIG.
Figure 4 is a bottom perspective view of the noise suppressor for the air discharge duct of the railway vehicle according to an embodiment of the present invention,
FIG. 5 is a view for explaining a state of use of the noise suppressor for an air discharge duct of a railway vehicle according to a preferred embodiment of the present invention mounted on an air discharge duct of a condenser provided above and below the railway vehicle.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

The noise preventing body for the air discharge duct of the railway vehicle according to the present invention is mounted on the outlet of various air discharge ducts provided in the railway vehicle, so that the noise or dust scattered by the air discharged to the corresponding outlet can be greatly reduced. It is a device that distributes the flow in multiple directions.

Hereinafter, with reference to the accompanying Figures 2 to 4, it will be described in detail the configuration and effect of the noise suppressor for the air discharge duct of the railway vehicle according to a preferred embodiment of the present invention.

Noise suppression body for the air discharge duct of the railway vehicle according to a preferred embodiment of the present invention comprises a main body 100, a guide member 200, a plurality of grills (300a, 300b) and the porous plate 400.

2 and 3, the main body 100 is provided in a tubular shape having a rectangular cross section having an inlet 110 on one side and an outlet 120 on the other side, the outlet of the air discharge duct and the inlet The 110 is installed in the air exhaust duct in a corresponding contact state, and forms the body of the noise suppressor for the air exhaust duct of the railway vehicle.

The first and second side outlets 130 and 140, which are passages through which air discharged to the discharge port may be additionally discharged in addition to the outlet 120, are formed on the side of the main body 100 to face each other.

That is, the air discharged to the outlet and introduced into the main body 100 through the inlet 110 is discharged to the outlet 120 through the guide member 200 to be described later, or guided by the guide member 200 It is discharged to the second side outlet outlets 130 and 140. In other words, the discharged air is finally discharged through a large area equal to the sum of the areas of the outlet 120 and the first and second side outlet outlets 130 and 140.

And at the inlet 110 side end of the main body 100, the flange 150 is formed so that the inlet 110 is installed in the air exhaust duct in a state in contact with the outlet of the air exhaust duct, this plan Branch 150 is formed with a plurality of fastening holes 151 to use a fastening means such as bolts.

In a preferred embodiment of the present invention, the cross-sectional shape of the main body 100 is implemented as a rectangle, the cross-sectional shape is not limited to this, for example, may be implemented in a circular shape.

The above-described guide member 200 partially passes the air introduced into the inlet 110 of the main body 100, and partially guides the air to the first and second side outlet outlets 130 and 140 to direct the flow of the discharged air in three directions. Disperse

To this end, the guide member 200 is made of a mesh of steel or its alloy material (mesh) is provided in a plate shape having a linear bent portion 210 is bent so that its center portion protrudes to one side 2 and 3 As shown in the figure, a pair of inclined surfaces 220a and 220b are provided.

The pair of inclined surfaces 220a and 220b guide a part of the discharged air introduced into the inlet 110 and guide the discharged to the first and second side outlets 130 and 140.

Here, the bent portion 210 may be formed at its center with respect to the width direction of the main body 100 when viewed from the side, but is discharged to the discharge port is uniformly introduced into the discharge air flowing into the inlet 110 If the inlet 110 is unevenly introduced to one side, it is preferable that the position is formed in the guide member 200 so as to be biased toward one side with respect to the width direction of the main body 100.

The reason is that the air flowing into the first side outlet 130 based on the bent portion 210 is guided by the first inclined surface 220a and discharged to the first side outlet 130, and the second side outlet 130 The air flowing into the 140 side is guided by the second inclined surface 220b and discharged to the second side outlet 140, for example, the second side part if more discharge air is introduced to the first side outlet 130. This is because the amount of air discharged toward the first side outlet 130 is much greater than that of the outlet 140.

That is, at this time, if the bent portion 210 is formed to be biased toward the first side outlet 130, the amount of air guided to the first side outlet 130 is reduced, resulting in the first and second side outlets 130 and 140. ), The amount of air exhausted can be approximately equal.

In particular, in the case of the air discharge duct of the condenser fan located above and below the railway vehicle, which is ideally applied to the air exhaust duct noise preventing body of the present invention, the air is discharged to the outer circumferential side rather than the center side of the condenser fan according to the rotation of the condenser fan. Since the deflector 210 is biased toward the outer circumferential side of the condenser fan as described above, the amount of air discharged to the first and second side outlet outlets 130 and 140 is equally adjusted. It is desirable to minimize dust scattering as much as possible.

On the other hand, when the guide member 200 includes foreign matter in the air introduced into the inlet 110, the guide member 200 filters the foreign matter and guides the first and second inclined surfaces 220a and 220b, thereby providing the first and second side outlet outlets. It also serves to discharge to (130, 140). Therefore, the durability of the device is reduced by the foreign matter introduced into the inlet 110, it is convenient because it does not have to perform frequent maintenance work.

In a preferred embodiment of the present invention, the guide member 200 is made of a mesh of steel or alloy material, but it is sufficient that a porous material of various materials to pass a portion of the exhaust air and guide some, Note that the material and the provided shape are not limited thereto. For example, the guide member 200 may be formed of a plate member having a plurality of communication holes.

In addition, the bent portion 210 is formed to protrude in a linear manner, the two inclined surfaces (220a, 220b) are formed in the guide member 200 is provided to distribute the discharge air in two additional directions in addition to the outlet 120, the guide member The shape of the 200 and the bent portion 210 is not limited thereto.

For example, the bent portion 210 is formed to protrude in a point shape, the guide member 200 is provided in a pyramid shape while four inclined surfaces are formed, the discharge air may be provided in addition to the outlet 120 in four additional directions. have. Of course, in this case, two side outlets in addition to the first and second side outlets 130 and 140 will be further formed on the side of the main body 100.

The plurality of grills 300a and 300b are installed at the first and second side outlet outlets 130 and 140 to uniformly flow the air discharged to the first and second side outlet outlets 130 and 140, and the railway vehicle. The tombstone, which often occurs in accordance with the operation, serves to block the inflow of the first and second side outlets 130 and 140.

Similarly, the porous plate 400 is installed at the outlet 120 to uniformly flow the air discharged to the outlet 120, and serves to block the inflow of the zeolite into the outlet 120.

The plurality of grills 300a and 300b and the perforated plate 400 may be replaced with other mechanical elements performing similar functions, and are not an essential component of the noise suppressor for the air exhaust duct of the railway vehicle according to the present invention. To reveal.

Hereinafter, referring to FIG. 5, the air exhaust duct 10 of the condenser fan 10 provided above and below the railroad vehicle may be used to indicate a state of use of the noise suppressor for the air exhaust duct of the railroad vehicle according to the preferred embodiment of the present invention. It will be described in detail through the discharge flow of the air discharged to the outlet 21 of the air discharge duct 10 on the basis of the mounted state.

First, the air flow inside the air discharge duct 10 of the condenser fan 10 is formed to be biased toward the outer circumferential side rather than the center side of the condenser fan 10 where the linear velocity naturally increases due to the rotation of the condenser fan 10.

In order to match the amount of air discharged to the first and second side outlets 130 and 140 to be almost equal in spite of the flow of the air biased as described above, as shown in FIG. 5, the bending of the guide member 200 is performed. The unit 210 is installed in the air discharge duct 10 using a fastening means BT such as a bolt to the air discharge duct of the railroad car in a state in which the unit 210 is located to be biased toward the outer circumferential side of the condenser fan 10.

When the air discharged into the air discharge duct 10 passes through the outlet 21 and enters the inlet 110 of the main body 100, the guide member 200 first meets the guide member 200, wherein the guide member 200 protrudes. A part of the air introduced into the first side outlet 130 based on the bent part 210 is guided to the first side outlet 130 through the first inclined surface 220a. The guide member 200 passes through the remaining part of the air and is discharged to the outlet 120.

Next, the air guided toward the first side outlet 130 is uniformly discharged by a plurality of grills 300a installed at the first side outlet 130, that is, the first side outlet 130, that is, the main body 100. Final discharge to one side of the), the air passed to the outlet 120 side is discharged to the bottom of the main body 100 while the discharge flow is uniform by the porous plate 400 installed in the outlet (120).

In addition, some of the air introduced into the second side outlet 140 based on the protruding bent portion 210 of the guide member 200 is connected to the second side outlet through the second inclined surface 220b of the guide member 200. 140). The guide member 200 is passed through the remaining portion of the air as it is to be discharged to the outlet 120.

Thereafter, the air guided to the second side outlet 140 is uniformly discharged by the plurality of grills 300b installed at the second side outlet 140, that is, the second side outlet 140, that is, the main body 100. The final discharge to the other side of the), the air passed to the outlet 120 side is discharged to the lower portion of the main body 100 while the discharge flow becomes uniform by the porous plate 400 installed in the outlet (120).

At this time, the area of the inlet 110 of the first side outlet 130 and the side of the second side outlet 140 is based on the bent portion 210 that is biased toward the second side outlet 140 of the guide member 200. It is provided much wider than the inlet area, but as described above, since the flow distribution of air flowing into the inlet 110 is biased toward the second side outlet 140, as a result, the first and second inclined surfaces 220a and 220b respectively. The amount of air guided is implemented almost equally.

Herein, when the amount of air flowing into the inlet 110 of the main body 100 is 100%, the amount of air discharged to the first and second side outlets 130 and 140 is 25% and the outlet 120 is respectively. The amount of air discharged through is preferably implemented to about 50%. However, the flow distribution of the air divided into three branches can be flexibly changed according to the characteristics of the air exhaust duct in which the noise suppressor for the air exhaust duct of the railway vehicle is installed.

On the other hand, foreign matters of a large size that can reduce or damage the durability of the device from the foreign material that is sometimes introduced with the air flowing into the inlet 110 of the main body 100 can not pass through the guide member 200 of the network It is naturally guided to the first and second slopes 220a and 220b and discharged through the first and second side outlet outlets 130 and 140.

Accordingly, the noise suppressor for the air discharge duct of the railway vehicle according to the present invention has a function of distributing the flow of the exhaust air through the network guide member 200 in three branches, while being included in the exhaust air Durability is not degraded or the guide member 200, etc. are not damaged by the foreign matter, so that the maintenance is also excellent.

As described above, according to the noise preventing body for the air discharge duct of the railway vehicle according to the present invention, by dispersing the air discharged to the outlet 21 of the air discharge duct 20 in three directions, respectively, the outlets of the main body 100 And a guide member 200 for guiding and passing through the outlet 120 and the first and second side outlet outlets 130 and 140 so as to increase the passage cross-sectional area through which air is discharged, thereby greatly reducing the noise of air discharge. By reducing the flow of air discharged perpendicularly to the ground through the air discharge duct 20 of the condenser fan 10 provided above and below the railway vehicle, the amount of dust scattered from the ground due to the discharged air can be greatly reduced. .

Although the present invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that various modifications and variations are possible within the technical spirit of the present invention, and such modifications and variations belong to the appended claims. will be.

Description of the Related Art [0002]
100: main body 110: inlet
120: outlet 130: first side outlet
140: second side outlet 150: flange
151: fastening hole 200: guide member
210: bend portion 220a: first slope
220b: second slope 300a, 300b: grill
400: perforated plate 410: through hole
10 condenser fan 20 air discharge duct
21: outlet BT: fastening means
GD: Ground

Claims (5)

It is provided in a tubular shape having an inlet and an outlet, and the inlet is installed so as to correspond to the outlet of the air exhaust duct of the railway vehicle, the first side and the second side facing each other so that the air discharged to the outlet is dispersed and discharged A body formed with an outlet;
The central portion is provided in a plate shape having a bent portion bent to protrude to one side, has a pair of inclined surfaces, and a portion of the air passing through the main body is installed in the main body and intersects the first along the pair of inclined surfaces. A guide member made of a porous material for guiding each of the second side outlets to be discharged and allowing the rest to be discharged to the outlets; And
A plurality of grills provided at the first and second side outlets to uniformly flow the air discharged to the first and second side outlets and to prevent inflow of zeolites;
Noise preventive body for the air discharge duct of the railway vehicle comprising a. The method of claim 1,
Porous material forming the guide member,
A noise preventing body for an air exhaust duct of a railway vehicle, characterized by being provided with a mesh made of steel or an alloy thereof. delete The method of claim 1,
A plurality of through holes formed in the outlet to uniformly flow the air discharged to the outlet and to prevent inflow of the zeolite;
Noise suppressor for the air discharge duct of the railway vehicle further comprises a. The method according to any one of claims 1, 2 and 4,
The bent portion of the guide member,
When the air discharged to the discharge port is discharged unbiased to one side of the discharge port, the noise for the air discharge duct of the railway vehicle, characterized in that formed in the guide member so that the position inside the main body is biased to one side of the discharge port Preventive body.

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