CN206830296U - Through type muffler - Google Patents

Abstract

The utility model provides a straight-through muffler, which belongs to the technical field of the engine muffler; it solves the technical problems of inconvenient processing and installation of the existing muffler, and poor noise reduction effect; the technical scheme of the utility model is: a straight-through muffler, It includes a muffler pipe, a muffler shell and a mounting plate. A through hole is provided on the mounting plate. The muffler tube is a straight-through tubular structure. The interior is hollow and one end is connected to the mounting plate. One end of the sound-absorbing pipe is located in the sound-absorbing shell and both ends of the sound-absorbing shell are in contact with the sound-absorbing pipe respectively. The sound-absorbing shell is separated from the sound-absorbing pipe and forms a resonance chamber. There is a silencer hole that connects the resonance chamber with the silencer tube; the silencer tube and the silencer shell are connected to the mounting plate, the silencer tube and the silencer shell are easy to disassemble, and the silencer tube is only in contact with the silencer shell, so there is no need to consider the connection between the silencer tube and the silencer shell. The connection strength between sound-absorbing shells.

Description

Straight-through muffler

technical field

The utility model belongs to the technical field of engine mufflers, and relates to a straight-through muffler.

Background technique

Turbocharging technology has been widely used. As we all know, the engine generates power by burning fuel in the cylinder. Since the amount of fuel input is limited by the amount of air in the cylinder, the power generated by the engine will also be limited. , if the running performance of the engine is already in the best state, increasing the output power can only increase the amount of fuel by compressing more air into the cylinder, thereby improving the combustion performance. Therefore, under the current technical conditions, the turbocharger is the only mechanical device that can increase the output power of the engine while the working efficiency remains unchanged.

Existing turbochargers are usually equipped with a muffler to reduce the noise from the engine and prevent the noise from entering the cabin, so that the noise in the cabin is smaller and quieter. For example, the invention patent application with application number 201610452342.6 Disclosed is a muffler for a turbocharger, which includes an outer pipe body and an inner pipe body. The outer pipe body is in the shape of a pipe with two ends open, which is sleeved outside the inner pipe body and connected to the inner pipe body through two annular end plates. There is an annular muffler chamber between the inner pipe body, the outer pipe body and the two end plates, and the inner pipe body is provided with a plurality of muffler holes connected to the annular muffler chamber. This kind of muffler has a simple and compact structure and takes up little space. It is connected to the outlet of the small supercharger compressor, which can effectively suppress the first-order noise, but at the same time, there are the following technical problems. 1. The structure of this muffler is too simple, and the outer pipe body and the inner pipe body are closely related to noise reduction. If the two are directly connected to the small supercharger compressor, the noise reduction effect and service life of the muffler will be affected; 2. The outer pipe body is directly connected to the inner pipe body. 3. A plurality of circular sound-absorbing holes are evenly distributed on the inner pipe body in a ring shape, and there are many sound-absorbing holes, which is inconvenient to process, and this The structure of the hole also leads to poor sound attenuation effect.

To sum up, in order to solve the technical problems of the above-mentioned mufflers, it is necessary to design a straight-through muffler that is easy to install, easy to process, and has a good noise reduction effect.

Utility model content

The purpose of the utility model is to solve the above-mentioned problems in the prior art, and propose a straight-through muffler that is easy to install, easy to process, and has good noise reduction effect.

The purpose of this utility model can be achieved through the following technical solutions: a straight-through muffler, including a muffler pipe, a muffler shell and a mounting plate, the mounting plate is provided with a through hole, and the muffler pipe is a straight-through tubular structure , the silencer tube is connected to the mounting plate and communicates with the through hole, the interior of the silencer shell is hollow and one end is connected to the mounting plate, one end of the silencer tube is located in the silencer shell and both ends of the silencer shell are respectively connected to the silencer tube, the The sound-absorbing shell is separated from the sound-absorbing pipe to form a resonance chamber, and the sound-absorbing pipe is provided with a sound-absorbing hole that communicates the resonance chamber with the sound-absorbing pipe.

In the above-mentioned straight-through muffler, there are two silencing holes arranged transversely on the silencing pipe, and the two silencing holes are arranged symmetrically.

In the above straight-through muffler, one end of the muffler pipe is provided with a raised ring around its outer surface.

In the above-mentioned straight-through muffler, the two ends of the sound-absorbing shell are respectively closed by an end plate, and a coaxial end hole is arranged in the middle of the two end plates, and the peripheral edge of the end hole extends outward to connect with the end plate. A sleeve, the diameter of the connecting sleeve is smaller than the diameter of the sound-absorbing shell, and the connecting sleeve is attached to the sound-absorbing pipe.

In the above straight-through muffler, the mounting plate is provided with a boss coaxial with the through hole and a platform wall is formed on the periphery of the boss. superior.

Compared with the prior art, the utility model has the following beneficial effects:

1. Both the muffler pipe and the muffler shell are connected to the mounting plate, and the mounting plate is used to connect with the turbocharger, which avoids the direct connection of the muffler pipe and the muffler shell with the turbocharger, and extends the length of the muffler pipe and the muffler shell The service life of the whole muffler is enhanced.

2. Both the silencer pipe and the silencer shell are connected to the mounting plate, and the silencer pipe and the silencer shell are easy to disassemble, while the silencer pipe is only in contact with the silencer shell, so there is no need to consider the connection strength between the silencer pipe and the silencer shell.

3. The two silencing holes are arranged horizontally on the silencing pipe. The number of silencing holes is small and the area is large, which is easy to process. Compared with the small circular silencing holes, the structure of this hole makes it easier for sound and gas to pass through, and the silencing effect is better. .

Description of drawings

Fig. 1 is the front perspective view of the utility model.

Fig. 2 is a rear perspective view of the utility model.

Fig. 3 is a side sectional view of the utility model.

Fig. 4 is a front exploded perspective view of the utility model.

In the figure, 10, silencing pipe; 11, silencing hole; 12, collar; 20, silencing shell; 21, end plate; 22, end hole; 23, connecting sleeve; 30, mounting plate; 31, through hole; 32 , mounting hole; 33, boss; 34, table wall 40, resonance chamber.

detailed description

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in FIGS. 1-4 , the straight-through muffler of the present invention is used in a turbocharger of a motor vehicle engine. The muffler includes a muffler pipe 10 , a muffler housing 20 and a mounting plate 30 .

The mounting plate 30 is a rhombus-shaped plate structure, and a through hole 31 is provided in the middle thereof, and mounting holes 32 are respectively provided on both sides of the mounting plate 30. The silencer pipe 10 is a straight-through circular tubular structure. One end of 10 is connected to the mounting plate 30 and communicates with the through hole 31. The interior of the sound-absorbing shell 20 is hollow, and the two ends are respectively closed by an end plate 21. A coaxial end hole 22 is provided on the two-end plate 21 to silence the sound. One end of the shell 20 is connected to the mounting plate 30, one end of the sound-absorbing pipe 10 passes through the end hole 22 and is located in the sound-absorbing shell 20 and the holes 22 at both ends, and the two end plates 21 are respectively in contact with the sound-absorbing pipe 10, and the sound-absorbing shell 20 is separated from the muffler pipe 10 and forms a resonant chamber 40 , and a muffler hole 11 for communicating the resonant chamber 40 with the muffler pipe 10 is provided on the muffler pipe 10 .

When working, the sound wave enters the silencer pipe 10 through the through hole 31 or one end of the silencer pipe 10 along with the gas, and enters the resonance chamber 40 through the silencer hole 11, so that the sound wave is reduced in the resonance chamber 40 to achieve the purpose of silencer , to avoid direct transmission of sound waves to the turbocharger, the entire muffler is composed of three parts, its structure is relatively simple, easy to disassemble, long service life, good noise reduction effect.

On the basis of the above structure, the utility model further improves and refines it.

As shown in Fig. 3 and Fig. 4, there are two silencing holes 11 and they are arranged laterally on the silencing pipe 10, each silencing hole 11 is a square hole, and the two silencing holes 11 are arranged symmetrically, that is to say, two silencing holes The holes 11 all extend laterally on the muffler pipe 10 .

Two silencing holes 11 are arranged horizontally on the silencing pipe 10. The silencing holes 11 are small in number and large in area and easy to process. Compared with the small circular silencing holes 11, the structure of this hole makes it easier for sound and gas to pass through, and has a better silencing effect. better.

As shown in FIGS. 2 to 4 , one end of the muffler pipe 10 is provided with a protruding ring 12 around its outer surface. Preferably, the protruding ring 12 is formed by the inner wall of the muffler pipe 10 being recessed outward.

By setting the protruding ring 12, it is convenient to connect the muffler pipe 10 with the hose, and the plasticity of the hose solves the accumulated errors generated during the processing of each component, which is convenient for assembly.

As shown in Figure 3 and Figure 4, the peripheral edge of the end hole 22 extends outwards a connecting sleeve 23 connected to the end plate 21, the diameter of the connecting sleeve 23 is smaller than the diameter of the sound-absorbing shell 20, and the connecting sleeve 23 is attached to On the silencer pipe 10.

By setting the connecting sleeve 23, the contact area between the sound-absorbing shell 20 and the sound-absorbing pipe 10 is increased, the stability between the sound-absorbing shell 20 and the sound-absorbing pipe 10 is improved, and the sealing performance of the resonant cavity is better, thereby improving sound-absorbing The noise reduction effect of the device.

As shown in FIG. 4 , the mounting plate 30 is provided with a boss 33 coaxial with the through hole 31 and a platform wall 34 is formed on the periphery of the boss 33 , and one end of the silencer housing 20 is attached to the silencer pipe 10 And against the table wall 34 .

Through this structure, the quick disassembly and assembly of the silencer pipe 10, the silencer housing 20 and the mounting plate 30 can be realized, and the disassembly and assembly efficiency among the three can be improved. The fixing effect of the plate 30 is better.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (5)

1. Straight-through muffler, characterized in that: it includes a muffler pipe, a muffler housing and a mounting plate, the mounting plate is provided with a through hole, the muffler pipe is a straight-through tubular structure, and the muffler pipe is connected to the mounting plate And communicate with the through hole, the interior of the sound-absorbing shell is hollow and one end is connected to the mounting plate, one end of the sound-absorbing pipe is located in the sound-absorbing shell and the two ends of the sound-absorbing shell are respectively connected with the sound-absorbing pipe, and the sound-absorbing shell is separated from the sound-absorbing pipe A resonance chamber is opened and formed, and a muffler hole is provided on the muffler pipe to communicate the resonant chamber with the muffler pipe. 2. The straight-through muffler according to claim 1, characterized in that there are two muffler holes arranged transversely on the muffler pipe, and the two muffler holes are arranged symmetrically. 3. The straight-through muffler according to claim 1, characterized in that: one end of the muffler pipe is provided with a protruding ring around its outer surface. 4. The straight-through muffler according to claim 1, characterized in that: the two ends of the sound-absorbing shell are respectively closed by an end plate, the middle of the two end plates is provided with a coaxial end hole, and the periphery of the end hole A connecting sleeve connected to the end plate is extended outward, the diameter of the connecting sleeve is smaller than that of the sound-absorbing shell, and the connecting sleeve is attached to the sound-absorbing pipe. 5. The straight-through muffler according to claim 1, characterized in that: the mounting plate is provided with a boss coaxial with the through hole and a platform wall is formed on the periphery of the boss, and one end of the sound-absorbing shell Paste on the muffler pipe and against the table wall.