KR100842409B1 - Assistant muffler for tank installed on car body - Google Patents

Abstract

An auxiliary muffler for a tank, mounted on the exterior of a tank body, is provided to render exhaust gas to pass through a partition wall, a chamber, and a sound-absorbing material in the auxiliary muffler and thereby minimize flow energy, thus minimizing exhaust noise. An auxiliary muffler(1) for a tank, mounted on the exterior of a tank body, includes a casing(10), an inlet pipe(30), an outlet pipe(40), and a sound-absorbing material. A plurality of chambers(81,82,83) is defined in the casing by partition walls(71,72). The inlet pipe is coupled to the casing so as to communicate with a main muffler provided in the tank body and the chambers, and exhaust gas discharged from the main muffler flows through the inlet pipe to the chambers. The outlet pipe is coupled to the casing so as to communicate with the chambers, and is used to discharge exhaust gas, pressure and temperature of which are reduced while the exhaust gas passes through the chambers. The sound-absorbing material is provided in the casing to reduce noise generated by the exhaust gas introduced into the inlet pipe.

Description

ASSISTANT MUFFLER FOR TANK INSTALLED ON CAR BODY}

1 is a plan view of a tank showing a state equipped with an auxiliary silencer according to the present invention,

FIG. 2 is a rear view of FIG. 1;

Figure 3 is a cross-sectional view showing the interior of the auxiliary silencer for tram according to the present invention.

<Description of Symbols for Main Parts of Drawings>

1: auxiliary silencer 3: body

10: casing 11: outer casing

12: inner casing 20: sound absorbing material

30: inlet pipe 40: discharge pipe

50: inner pipe 60: heat dissipation cover

71; 1st partition 72: 2nd partition

81: first chamber 82: second chamber

83: third chamber 90: guide plate

95: separator

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary silencer for a vehicle, and more particularly, to an auxiliary silencer for a vehicle that can be installed outside the vehicle body and reduce exhaust noise when the exhaust gas is finally discharged.

In general, a tank is a combat vehicle equipped with a powerful gun or a machine gun, and has a powerful propulsion engine and a driving device capable of maneuvering even in a field without a road in a body armored with thick armor. A silencer is provided to reduce exhaust noise by lowering the temperature and pressure of the exhaust gas.

That is, as the engine speed of the tank increases, the amount of exhaust gas is increased, and when such a large amount of exhaust gas is discharged, a loud noise is generated to cause discomfort to the occupant. However, there is a problem in that the silencer provided inside the body of the tank is limited in solving such a noisy and still causes noise pollution to the occupants and the surrounding environment.

Accordingly, it is an object of the present invention to provide an auxiliary silencer for a vehicle that can minimize exhaust noise by providing a separate auxiliary silencer outside the vehicle body.

According to the present invention, there is provided an auxiliary silencer for a tram installed outside a vehicle body, comprising: a casing in which a plurality of chambers are formed by partition walls provided therein; An inlet pipe coupled to the casing in communication with the main silencer and the chamber inside the vehicle body, for introducing exhaust gas discharged from the main silencer into the chamber; A discharge pipe coupled to the casing in communication with the chamber, for discharging the reduced and reduced exhaust gas to the outside of the vehicle body via the chamber; It is achieved by a sound absorbing material provided inside the casing to reduce noise generated by the exhaust gas introduced into the inflow pipe.

Here, the casing is composed of an inner casing in which the plurality of chambers are formed, and an outer casing that forms the exterior of the inner casing, and the sound absorbing material is preferably provided between the inner casing and the outer casing.

The sound absorbing material is preferably made of a ceramic wool material.

The partition wall includes a first partition wall and a second partition wall arranged side by side, and the chamber is configured by the first and second partition walls into first, second, and third chambers, and the inflow pipe is coupled toward the second chamber. And the discharge pipe is coupled toward the first chamber so that the pipes are shifted.

The second chamber is provided with a guide plate for dividing the second chamber into a second upper chamber and a second lower chamber to guide the discharge gas introduced from the inflow pipe to the third chamber, and flow into the second upper chamber. After the exhaust gas is guided by the guide plate and passes through the second partition wall, the exhaust gas is discharged to the discharge pipe through the first chamber via the third chamber and the second lower chamber.

A plurality of through holes may be formed in the second lower chamber, and an inner pipe coupled to the first and second partition walls may be provided to communicate with the first chamber and the third chamber.

Preferably, the third chamber is provided with a separating plate for partitioning the third chamber into a third upper chamber and a third lower chamber.

It is preferable that a heat dissipation cover is provided on the outer surface of the casing.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a plan view of a tank showing a state in which the auxiliary silencer is mounted according to the present invention, Figure 2 is a rear view of Figure 1, Figure 3 is a cross-sectional view showing the interior of the auxiliary silencer for a tank according to the present invention. As shown in FIGS. 1 to 3, the auxiliary silencer 1 for a vehicle according to the present invention has a casing 10 in which a plurality of chambers 81, 82, and 83 are formed by partition walls 71 and 72 installed therein. And, one side of the casing 10 is communicatively coupled to the chamber (81, 82, 83) for introducing the exhaust gas discharged from the main silencer (not shown) (see the arrow in Figure 3) into the casing 10 An inlet pipe 30 and a discharge pipe 40 coupled to the other side of the casing 10 so as to communicate with the chambers 81, 82, and 83 to discharge the exhaust gas via the chambers 81, 82, and 83 to the outside. And a sound absorbing material 20 provided inside the casing 10 to reduce noise generated by the exhaust gas introduced into the inflow pipe 30.

The casing 10 is composed of an inner casing 12 in which a plurality of chambers 81, 82, and 83 are formed, and an outer casing 11 forming an exterior of the inner casing 12, wherein the inner casing 12 is formed. The sound absorbing material 20 is provided between the outer casing 11 and the outer casing 11.

The partition wall is composed of the first partition wall 71 and the second partition wall 72 arranged next to each other, whereby the chamber is composed of the first, second, third chambers (81, 82, 83). In this case, each of the chambers 81, 82, and 83 has a predetermined size, so that the exhaust gas introduced into the inlet pipe 30 may be decompressed and reduced in temperature through each of the chambers 81, 82, and 83. That is, when the exhaust gas passes through the chambers 81, 82, 83 and the partition walls 71, 72, interference of sound waves, a decrease in pressure, a decrease in exhaust temperature, etc. occur, and the noise gradually decreases. ), The final exhaust noise can be minimized. At this time, the sound absorbing material 20 functions to reduce exhaust noise as much as possible by absorbing exhaust noise along with the chambers 81, 82, 83 and the partition walls 71, 72. As such, the feature of the present invention is to minimize the noise of the exhaust gas introduced from the main silencer by the chambers 81, 82, 83, the partitions 71, 72, and the sound absorbing material 20 inside the casing 10. It is in that it can prevent the noise pollution of occupant and the surrounding environment.

One end of the inflow pipe 30 is bolted to the outside of the vehicle body 3, and the other end is coupled to communicate with the second upper chamber 82a to be described later inside the casing 10. At this time, a plurality of passage holes 30a through which the exhaust gas discharged from the main silencer passes are formed on the other end surface of the inflow pipe 30 inserted into the second upper chamber 82a to be described later. Thus, the high-pressure high-temperature exhaust gas introduced into the inlet pipe 30 exits the second upper chamber 82a, which will be described later, through the through hole 30a, so that the pressure and the temperature decrease.

One end of the discharge pipe 40 is inserted into the first chamber 81, which will be described later, and the other end is exposed to the outside. At this time, a pass hole 40a through which the exhaust gas introduced into the discharge pipe 40 passes is formed at one surface of the discharge pipe 40 inserted into the first chamber 81.

The discharge pipe 40 is coupled to the first chamber 81, and the inlet pipe 30 is coupled to the second chamber 82. As the exhaust pipe 40 and the inlet pipe 30 are arranged in such a manner that the flow path of the exhaust gas is long, the exhaust pipe 40 and the inlet pipe 30 are arranged in a straight line, compared with the exhaust pipe 40 and the inlet pipe 30. Since the flow energy dissipates, it is possible to obtain an effect that the exhaust noise can be further reduced.

The second chamber 82 is partitioned into the second upper chamber 82a and the second lower chamber 82b by the guide plate 90 disposed in the horizontal direction between the first partition wall 71 and the second partition wall 72. The third chamber 83 is divided into a third upper chamber 83a and a third lower chamber 83b by the separating plate 95 provided in the same direction as the guide plate 90.

A plurality of passage holes 95a are formed in the plate surface of the separating plate 95, and the exhaust gas flowing into the third upper chamber 83a flows into the third lower chamber 83b through the passage hole 95a.

The guide plate 90 functions to block the second upper chamber 82a and the second lower chamber 82b, so that the exhaust gas introduced into the inflow pipe 30 passes from the second upper chamber 82a to the second lower side. It is not directly introduced into the chamber 82b and is guided to the third chamber 83. At this time, a passage hole 72a is formed in the upper surface of the second partition wall 72 so that the exhaust gas of the second upper chamber 82a flows into the third chamber 83. Therefore, the exhaust gas discharged from the inflow pipe 30 to the second upper chamber 82a impinges on the guide plate 90, passes through the through hole of the second partition wall 72, and enters the third chamber 83 to reduce pressure. Can be temperature reduced.

At this time, the second lower chamber 82b is provided with an inner pipe 50 coupled across the first partition wall 71 and the second partition wall 72. On the surface of the inner pipe 50, a plurality of passage holes 50a for exhausting the exhaust gas are formed. Thus, the exhaust gas introduced into the third lower chamber 83b may be introduced into the second lower chamber 82b through the through hole 50a while passing through the inner pipe 50 to be decompressed and reduced in temperature. Thereafter, the exhaust gas discharged through the inner pipe 50 is finally discharged to the outside through the discharge pipe 40, at which time the exhaust energy is dissipated as much as possible within the casing 10, and according to the flow energy. Exhaust noise can be reduced as much as approximately 80 dB or less.

The sound absorbing material 20 may be made of glass fiber, PU foam, or the like, but in the present embodiment, it is more preferable that the sound absorbing material 20 is made of ceramic wool material such as eco-friendly ceracol.

Here, the auxiliary silencer 1 is preferably provided with a heat dissipation cover 60 surrounding the outer surface of the outer casing 11. At this time, the heat dissipation cover 60 is made of a good heat transfer material such as stainless, and easily radiated, it is good to prevent the outer casing 11 from touching the body.

As such, the auxiliary silencer 1 according to the present invention is further provided outside the vehicle body 3 separately from the main silencer provided in the vehicle body 3 to finally reduce exhaust noise generated by the exhaust gas, thereby reducing noise pollution. This can solve the noise pollution problem for the occupant and the surrounding environment.

With this configuration, the principle that the exhaust noise is reduced by the vehicle auxiliary silencer 1 according to the present invention will be briefly described with reference to FIG.

When the exhaust gas (arrow of FIG. 3) discharged from the main silencer inside the vehicle body 3 flows into the inflow pipe 30, the exhaust gas flows into the second upper chamber through the inflow pipe 30 and the through hole 30a. It exits to 82a, where the exhaust gas is primarily reduced in pressure, reduced in temperature and reduced in noise.

Thereafter, the exhaust gas in the second upper chamber 82a impinges on the guide plate 90 and then flows through the through hole 72a of the second partition wall 72 into the third upper chamber 83a. The exhaust gas, which is also primarily dissipated in energy, is decompressed and temperature-reduced by the second partition wall 72 and the third upper chamber 83a in a second manner, and the third lower side is passed through the through hole 95a of the separator 95. Flows into the chamber 83b.

Next, the exhaust gas in the third lower chamber 83b exits the second lower chamber 82b through the through-hole 50a while passing through the inner pipe 50 to decompress and reduce the temperature in the third chamber. Finally, the pressure is reduced and reduced.

The exhaust gas finally introduced into the first chamber 81 through the above process is discharged to the outside through the discharge pipe 40.

As described above, according to the present invention, as the exhaust gas passes through each component inside the auxiliary silencer (bulk, chamber and sound absorbing material, etc.), the flow energy is dissipated as much as possible, and thus, the tank installed outside the vehicle body in which exhaust noise can be minimized. To provide an auxiliary silencer.

Claims (8)

delete delete delete delete A casing having an inner casing in which the first, second and third chambers are formed by the first and second partition walls arranged side by side and an outer casing provided outside the inner casing with a sound absorbing material therebetween; An inlet pipe coupled to the casing toward the second chamber and introducing exhaust gas discharged from a main silencer into the second chamber; A discharge pipe coupled to the casing toward the first chamber so as to be displaced from the inlet pipe, for discharging the exhaust gas reduced in temperature and reduced in the first, second, and third chambers to the outside of the vehicle body; Including a guide plate disposed in the transverse direction of the first partition and the second partition wall partitioning the second chamber into a second upper chamber and a second lower chamber, The exhaust gas introduced into the second upper chamber through the inlet pipe from the main silencer is guided by the guide plate and passes through the second partition wall, and then passes through the third chamber and the second lower chamber. An auxiliary silencer for a tram installed outside the vehicle body, characterized in that discharged through the chamber to the discharge pipe. The method of claim 5, A plurality of through holes are formed in the second lower chamber, and inner pipes coupled to the first and second partition walls are provided to communicate with the first chamber and the third chamber. Auxiliary silencer for tram. The method of claim 6, The third chamber is provided with a separation plate for partitioning the third chamber in communication with the third upper chamber and the third lower chamber, the auxiliary silencer for a tram installed in the vehicle body. delete

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