CN108266255B

CN108266255B - Automobile silencer

Info

Publication number: CN108266255B
Application number: CN201810240698.2A
Authority: CN
Inventors: 李健; 孙兰娟; 吴金火; 周萌芳
Original assignee: Nanjing Gvg Automotive Power Co ltd
Current assignee: Nanjing Gvg Automotive Power Co ltd
Priority date: 2018-03-22
Filing date: 2018-03-22
Publication date: 2020-05-05
Anticipated expiration: 2038-03-22
Also published as: CN108266255A

Abstract

The invention discloses an automobile muffler, which comprises a first inner shell, wherein a first baffle is arranged on the left side inside the first inner shell, a second baffle is arranged inside the first inner shell and on the right side of the first baffle, a third baffle is arranged inside the first inner shell and on the right side of the second baffle, the right end of the first inner shell is in threaded connection with a second inner shell, a first cavity is formed between the first inner shell and the first baffle, a second cavity is formed between the first inner shell, the first baffle and the second baffle, a third cavity is formed between the first inner shell, the second baffle and the third baffle, a fourth cavity is formed between the third baffle and the second inner shell, and an isolating sleeve is arranged on the right surface of the inner cavity of the second inner shell. Saving resources and cost.

Description

Automobile silencer

Technical Field

The invention relates to the technical field of automobile accessories, in particular to an automobile silencer.

Background

At present, the automobile manufacturing industry has gradually developed into the important post industry of China, wherein, the automobile driving power is mainly generated by burning oil-gas mixed fuel in an engine cylinder to do work, the combustion exhaust gas generated in the process is discharged to the outside of the vehicle through an exhaust system of the vehicle, and in the exhaust system of the vehicle, because the engine can generate huge sound when exhausting high-temperature and high-pressure gas after combustion, certain noise pollution is caused, mufflers are therefore often provided in automotive exhaust systems to reduce the exhaust noise of automotive engines, in order to improve user experience, the noise of the single type that partial car silencer can only handle, the material of making an uproar that falls of filling can take place the loss in the use in the car silencer, can't reach effectual noise reduction effect after using for a period, needs the car silencer of renewal, resource-wasting and cost.

Disclosure of Invention

The present invention is directed to a muffler for a vehicle, which solves the above problems of the prior art.

In order to achieve the purpose, the invention provides the following technical scheme: an automobile silencer comprises a first inner shell, wherein a first baffle is arranged on the left side inside the first inner shell, a second baffle is arranged inside the first inner shell and on the right side of the first baffle, a third baffle is arranged inside the first inner shell and on the right side of the second baffle, the right end of the first inner shell is in threaded connection with a second inner shell, a first cavity is formed between the first inner shell and the first baffle, a second cavity is formed between the first inner shell, the first baffle and the second baffle, a third cavity is formed between the first inner shell, the second baffle and the third baffle, a fourth cavity is formed between the third baffle and the second inner shell, an isolation sleeve is arranged on the right surface of an inner cavity of the second inner shell, a first sound absorption layer is arranged between the second inner shell and the third baffle and on the outer side of the isolation sleeve, and an adsorption layer is arranged between the second inner shell and the third baffle and on the inner side of the isolation sleeve, the left end of the outer side wall of the first inner shell is provided with an outer edge, the right end of the outer edge is connected with the outer shell in a threaded manner, a second sound absorption layer is arranged between the outer shell and the first inner shell as well as between the outer shell and the second inner shell, an air inlet pipe is arranged at the upper part of the left side wall of the first inner shell in a penetrating way, the air inlet pipe penetrates through the first baffle, the second baffle and the third baffle, the air outlet pipe penetrates through the middle parts of the right side walls of the second inner shell and the outer shell, the air outlet pipe penetrates through the first baffle plate, the second baffle plate and the third baffle plate, the communicating pipe penetrates through the left and right of the lower end of the first baffle plate, baffle holes are uniformly arranged on the left and right of the second baffle in a penetrating way, side wall through holes are uniformly arranged on the outer side wall of the first inner shell in a penetrating way, the lateral wall of intake pipe just runs through in the inside of third cavity and fourth cavity and is equipped with air inlet through hole, the lateral wall of outlet duct just runs through in the inside of fourth cavity and is equipped with air outlet through hole.

Preferably, the first sound absorbing layer and the second sound absorbing layer are both made of glass fiber cotton materials.

Preferably, the adsorption layer is made of an activated carbon material.

Preferably, the air inlet pipe is wound with a cooling pipeline.

Compared with the prior art, the invention has the beneficial effects that: a car muffler, cool the treatment through the cooling pipe in the entrance, make the gas temperature entering the apparatus reduce, avoid the gaseous high temperature to influence the life of the apparatus, in the course that gas and noise spread and move, the noise in the gas contacts with first baffle, second baffle, third baffle and first inner shell, the sound wave reflects and interferes while spreading, reduce the acoustic energy and achieve the goal of silencing, can remove the low, middle frequency band noise effectively, get rid of the middle, high frequency noise in the gas through the second sound absorbing layer and first sound absorbing layer mutual cooperation, thus fall the noise of the multiple frequency, make the gas in the outlet duct contact with adsorption layer through the vent hole, make the adsorption layer carry on the adsorption treatment to the gas, adsorb the harmful substance among them, avoid the harmful gas is discharged into the air and influences the activity of people, after the device used a period, the filling material in adsorbed layer, first sound absorbing layer and the second sound absorbing layer can have damaged, need change it, takes off shell body and second interior casing, changes filling material, and then reinstallate second interior casing and shell body continue to use the device, compare in the cost and the resource of having practiced thrift of changing new silencer.

Drawings

FIG. 1 is a schematic cross-sectional front view of the present invention;

FIG. 2 is a sectional view taken along line A-A of FIG. 1;

fig. 3 is a cross-sectional view taken along line B-B of fig. 1.

In the figure: 1-a first inner shell, 2-a first baffle, 3-a second baffle, 4-a third baffle, 5-a second inner shell, 6-a first cavity, 7-a second cavity, 8-a third cavity, 9-a spacer sleeve, 10-a first sound absorbing layer, 11-an absorbing layer, 12-an outer edge, 13-an outer shell, 14-a second sound absorbing layer, 15-an air inlet pipe, 16-an air outlet pipe, 17-a communicating pipe, 18-a baffle hole, 19-a side wall through hole, 20-an air inlet through hole, 21-an air outlet through hole and 22-a cooling pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides an automobile muffler, includes first interior casing 1, and the left end of first interior casing is sealed, right-hand member opening, right-hand member and the threaded connection of second interior casing, the inside left side of first interior casing is equipped with first baffle 2, the inside of first interior casing just is equipped with second baffle 3 on the right side of first baffle, the inside of first interior casing just is equipped with third baffle 4 on the right side of second baffle, and first baffle, second baffle and third baffle divide into a plurality of spaces the inside of first casing, the right-hand member threaded connection of first interior casing has second interior casing 5, and the right-hand member of second interior casing is sealed, and the left end is open, and left end and first interior casing threaded connection, be formed with first cavity 6 between first interior casing and the first baffle, be formed with second cavity 7 between first interior casing, first baffle and the second baffle, first interior casing, A third cavity 8 is formed between the second baffle and the third baffle, a fourth cavity is formed between the third baffle and the second inner shell, a larger cavity is formed between the first inner shell and the second inner shell, the first baffle, the second baffle and the third year baffle divide the space into a plurality of smaller spaces to form a first cavity, a second cavity, a third cavity and a fourth cavity, exhaust gas of a vehicle can pass through different cavities and be treated in different cavities, a spacer sleeve 9 is arranged on the right surface of an inner cavity of the second inner shell, the fourth cavity is divided into an inner space and an outer space by the spacer sleeve, different materials are respectively filled in the two spaces, a first sound absorbing layer 10 is arranged between the second inner shell and the third baffle and on the outer side of the spacer sleeve, and sound absorbing materials are filled in the first sound absorbing layer and used for absorbing sound energy to achieve sound attenuation, the centering and high-frequency noise elimination effect is good, an adsorption layer 11 is arranged between the second inner shell and the third baffle and on the inner side of the isolation sleeve, materials for adsorbing harmful substances are filled in the adsorption layer, the adsorption layer is used for removing the harmful substances in the gas discharged by an automobile and cleaning the gas, the harmful gas is prevented from being discharged into the air to influence the activities of people, an outer edge 12 is arranged at the left end of the outer side wall of the first inner shell and is arranged on the outer side wall of the first inner shell conveniently for installing and fixing the outer shell, an outer shell 13 is connected at the right end of the outer edge in a threaded manner and is fixed on the outer edge and sleeved outside the first inner shell and the second inner shell, a second sound absorption layer 14 is arranged between the outer shell and the first inner shell and the second inner shell, and a cavity is formed between the outer shell and the first inner shell and the second inner shell, the cavity is filled with sound absorbing materials, the upper part of the left side wall of the first inner shell is provided with an air inlet pipe 15 in a penetrating way, the air inlet pipe is connected with an exhaust pipeline of a vehicle, gas exhausted by the vehicle enters the device from the air inlet pipe and is subjected to noise reduction treatment by the device, the air inlet pipe penetrates through the first baffle, the second baffle and the third baffle, the middle parts of the right side walls of the second inner shell and the outer shell are provided with an air outlet pipe 16 in a penetrating way, the air outlet pipe is used for exhausting the gas of the device, the air outlet pipe penetrates through the first baffle, the second baffle and the third baffle, the lower end of the first baffle is provided with a communicating pipe 17 in a penetrating way in the left and right directions, the communicating pipe penetrates through the first baffle to communicate the first cavity with the second cavity, so that the gas can pass through the first baffle to circulate, baffle holes 18 uniformly penetrate through the left and right directions, make gaseous second baffle circulation of can passing, the lateral wall of first interior casing evenly runs through and is equipped with lateral wall through-hole 19, and the lateral wall through-hole can supply the gas in the first interior casing to pass, makes the gas in the first interior casing and second sound-absorbing layer contact, carries out noise reduction to gas, the lateral wall of intake pipe just runs through in the inside of third cavity and fourth cavity and is equipped with air inlet through-hole 20, and air inlet through-hole makes the gas in the intake pipe can pass the intake pipe, makes intake pipe and third cavity and fourth cavity intercommunication get up, the lateral wall of outlet duct just runs through in the inside of fourth cavity and is equipped with air outlet through-hole 21, and air outlet through-hole makes the gas in the outlet duct can contact with the adsorption layer, makes the adsorption layer carry out adsorption treatment to gas, adsorbs harmful substance wherein.

Specifically, the first sound absorbing layer and the second sound absorbing layer are both made of glass fiber cotton materials, fibers in the glass fiber cotton materials are in three-dimensional intersection and are mutually wound to form a plurality of fine gaps, noise is reduced, and the glass fiber cotton materials have good heat resistance and can prolong the service life of the device because large heat can be carried in gas exhausted by an automobile.

Specifically, the adsorption layer is made of an activated carbon material, and the activated carbon has strong adsorption force and can effectively adsorb and remove harmful substances in the gas.

Specifically, the air inlet pipe is wound with a cooling pipeline 22, cooling water is connected into the cooling pipeline, and the temperature of the gas in the air inlet pipe is reduced, so that the temperature of the gas entering the device is reduced, and the service life of the device is prolonged.

The working principle is as follows: the noise-carrying gas exhausted by the vehicle enters the device from the air inlet pipe, is subjected to cooling treatment at an inlet through the cooling pipeline, so that the temperature of the gas entering the device is reduced, the phenomenon that the service life of the device is influenced due to overhigh temperature of the gas is avoided, the gas moves rightwards along the air inlet pipe, part of the gas can directly enter the third cavity from the air inlet through hole at the third cavity, part of the gas can enter the fourth cavity and is contacted with the first sound absorption layer through the air inlet through hole at the fourth cavity, the first sound absorption layer absorbs sound energy to achieve sound absorption, middle and high frequency noise can be eliminated, then the gas is reflected to move leftwards and directly enters the third cavity from the air inlet through hole at the third cavity, the gas in the third cavity can enter the second cavity through the baffle hole, the gas in the second cavity can enter the first cavity through the communicating pipe, and in the process of transmission and movement, noise in gas contacts with the first baffle, the second baffle, the third baffle and the first inner shell, sound wave is reflected and interfered when being transmitted, sound energy is reduced, low-frequency and medium-frequency band noise can be effectively removed, meanwhile, the side wall through hole can enable the gas in the first inner shell to pass through, the gas in the first inner shell is enabled to be contacted with the second sound-absorbing layer, the gas is matched with the first sound-absorbing layer to remove medium-frequency and high-frequency noise in the gas, the gas enters the air outlet pipe from the left port of the air outlet pipe after being denoised, the gas in the air outlet pipe is enabled to be contacted with the adsorption layer through the air outlet through hole, the adsorption layer is enabled to adsorb the gas, harmful substances in the gas are adsorbed, the harmful gases are prevented from being exhausted into the air to influence the activities of people, and after the device is used for a period of time, the filling materials in the adsorption layer, the first sound-absorbing layer and the second sound-, need change it, take off shell body and second inner casing, then adsorbed layer, first sound absorbing layer and second sound absorbing layer all can expose, change the processing to it, then install second inner casing and shell body again, continue to use the device, compare in the silencer of changing new and practiced thrift cost and resource.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An automotive muffler comprising a first inner shell (1), characterized in that: the inner part of the first inner shell (1) is provided with a first baffle (2) on the left side, the inner part of the first inner shell (1) is provided with a second baffle (3) on the right side of the first baffle (2), the inner part of the first inner shell (1) is provided with a third baffle (4) on the right side of the second baffle (3), the right end of the first inner shell (1) is connected with a second inner shell (5) in a threaded manner, a first cavity (6) is formed between the first inner shell (1) and the first baffle (2), a second cavity (7) is formed between the first inner shell (1), the first baffle (2) and the second baffle (3), a third cavity (8) is formed between the first inner shell (1), the second baffle (3) and the third baffle (4), and a fourth cavity is formed between the third baffle (4) and the second inner shell (5), the inner cavity right surface of the second inner shell (5) is provided with a separation sleeve (9), a first sound absorption layer (10) is arranged between the second inner shell (5) and the third baffle (4) and outside the separation sleeve (9), an adsorption layer (11) is arranged between the second inner shell (5) and the third baffle (4) and inside the separation sleeve (9), the outer side wall left end of the first inner shell (1) is provided with an outer edge (12), the right end of the outer edge (12) is in threaded connection with an outer shell (13), a second sound absorption layer (14) is arranged between the outer shell (13) and the first inner shell (1) and the second inner shell (5), the upper part of the left side wall of the first inner shell (1) is provided with an air inlet pipe (15) in a penetrating manner, the air inlet pipe (15) penetrates through the first baffle (2), the second baffle (3) and the third baffle (4), and an air outlet pipe (16) penetrates the middle parts of the right side walls of the second inner shell (5) and the outer shell (13), and the air outlet pipe (16) penetrates through the first baffle (2), the second baffle (3) and the third baffle (4), the lower end of the first baffle (2) is provided with a communicating pipe (17) in a left-right penetrating manner, the second baffle (3) is provided with baffle holes (18) in a left-right penetrating manner, the outer side wall of the first inner shell (1) is provided with a side wall through hole (19) in a uniform penetrating manner, the side wall of the air inlet pipe (15) is provided with an air inlet through hole (20) in the third cavity (8) and the fourth cavity (9) in a penetrating manner, the side wall of the air outlet pipe (16) is provided with an air outlet through hole (21) in the fourth cavity (9) in a penetrating manner, the air inlet through hole at the fourth cavity is in contact with the first sound absorbing layer, the first sound absorbing layer absorbs sound energy to achieve sound absorption, middle and high frequency noise can be eliminated, and then the air is reflected to move leftwards and, gas in the third cavity can enter into the second cavity through the baffle hole, gas in the second cavity can enter into first cavity through communicating pipe, at the in-process that the propagation removed, noise and first baffle in the gas, the second baffle, third baffle and the contact of first interior casing, the sound wave takes place to reflect and interfere when propagating, it reaches the noise elimination purpose to reduce the acoustic energy, can effectively get rid of low, the middle frequency band noise, simultaneously the lateral wall through-hole can make the gas in the first interior casing pass, make the gas in the first interior casing contact with the second sound-absorbing layer, with the cooperation of first sound-absorbing layer get rid of the middle and high frequency noise in the gas, the gas falls the back and enters into the outlet duct from the left port of outlet duct after making an uproar, in the outlet duct, the through-hole of giving vent to anger makes the gas in the outlet duct contact with the absorbent layer.

2. The muffler for an automobile according to claim 1, wherein: the first sound absorption layer (10) and the second sound absorption layer (14) are both made of glass fiber cotton materials.

3. The muffler for an automobile according to claim 1, wherein: the adsorption layer (11) is made of an activated carbon material.

4. The muffler for an automobile according to claim 1, wherein: and a cooling pipeline (22) is wound on the air inlet pipe (15).