CN219570183U - Exhaust muffler for automobile engine - Google Patents

Abstract

The utility model relates to the technical field of exhaust mufflers and discloses an automobile engine exhaust muffler, which comprises an automobile connecting plate, wherein connecting small holes are axially symmetrically formed in one side, close to the top, of the front surface of the automobile connecting plate, an exhaust pipe inlet is formed in the front surface of the automobile connecting plate, a sealing connector is fixedly arranged in the back surface of the automobile connecting plate, an exhaust pipe is fixedly arranged in the back surface of the sealing connector, a sealing fixing column is fixedly arranged in the bottom of the exhaust pipe, a stable noise elimination ferrule is fixedly arranged in the bottom of the sealing fixing column, a heat dissipation and scalding prevention shell is fixedly arranged in the bottom of the stable noise elimination ferrule, and a sound absorption asbestos shell is fixedly arranged in one side, close to the inside of the heat dissipation and scalding prevention shell, so that the sound characteristic impedance of surrounding sound transmission media is matched through the sound absorption asbestos shell, the sealing muffler is beneficial to reducing noise pollution, and the use ratio of equipment is improved.

Description

Exhaust muffler for automobile engine

Technical Field

The utility model relates to the technical field of exhaust mufflers, in particular to an automobile engine exhaust muffler.

Background

With the progress of science and technology, automobiles are increasingly widely applied in life of people, and riding comfort and good experience of driving are the most important choices when people select automobiles. The automobile muffler is characterized in that the length difference value of two pipelines is equal to half of the wavelength of sound waves emitted by an automobile, so that two rows of sound waves interfere and offset each other when being overlapped to weaken sound intensity, sound is reduced, noise caused by an automobile engine and vibration feeling generated by an automobile body can be effectively reduced, and therefore, the good muffler is an important automobile part for giving people full feeling to have good driving experience.

In the prior art, the positions of the circulating gas of the air inlet pipe and the air outlet pipe of the part of automobile exhaust silencer are very close, the exhaust flowing distance is short, the exhaust flow speed can not be reduced, the noise reduction effect is poor, the noise pollution can not be effectively reduced, the part of automobile exhaust silencer is used for treating improper exhaust, the generated noise can harm the physical and mental health of people passing by, the long-time work of automobile exhaust is not facilitated, and the use ratio of the exhaust silencer is reduced.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, the present utility model provides an exhaust muffler for an automobile engine, which solves the above-mentioned problems of the prior art.

The utility model provides the following technical scheme: the utility model provides an automobile engine exhaust silencer, includes the automobile connection board, the front of automobile connection board is close to top one side axisymmetric has seted up the connecting hole, the front of automobile connection board is close to the center and has seted up the blast pipe entry, the back of automobile connection board is close to center fixed mounting has sealed connector, the back of sealed connector is close to center fixed mounting has the blast pipe, the bottom of blast pipe is close to center fixed mounting has sealed fixed column, the bottom of sealed fixed column is close to center fixed mounting has stable noise elimination lasso, the bottom of stable noise elimination lasso is close to center fixed mounting has the heat dissipation to prevent scalding the shell, the inside of heat dissipation to prevent scalding the shell is close to one side fixed mounting has the sound absorption asbestos shell, the top of sound absorption asbestos shell is close to one side fixed mounting has first asbestos ball;

further, the first asbestos bulb is provided with a plurality of equidistant equal-sized distribution on the sound absorption asbestos shell, the exhaust pipe is provided with a plurality of equidistant equal-sized distribution on the top of the sealing fixed column, and the exhaust pipe is in a bent L shape.

Further, the inner part of the heat dissipation anti-scalding outer shell is close to the center and fixedly provided with a first isolation net, and the inner part of the first isolation net is close to the center and fixedly provided with a silencer inner shell.

Further, the inside of silencer inner shell is close to the center fixed mounting and has the sound absorption asbestos inner shell, the top of sound absorption asbestos inner shell is close to one side fixed mounting and has the second asbestos bulb, the front of silencer inner shell is close to the center and has seted up the silencer air groove.

Further, the muffler empty slot is provided with a plurality of equidistant equal-sized distribution on the muffler inner shell, the second asbestos bulb is provided with a plurality of equidistant equal-sized distribution on the sound absorption asbestos inner shell, and the muffler empty slot is in a rectangular shape.

Further, a second isolation net is fixedly arranged on one side of the second asbestos ball, and a contractible expansion chamber is formed in the second isolation net and close to the center.

Further, the inside of heat dissipation scald-proof shell is close to bottom fixed mounting and has fixed exhaust disk, the top of fixed exhaust disk is close to one side fixed mounting and has the pipeline fixer, the top of pipeline fixer is close to central fixed mounting and has the exhaust duct, the exhaust duct has a plurality of equidistance equilarge distribution on fixed exhaust disk.

The utility model has the technical effects and advantages that:

1. the utility model can be used for matching the acoustic characteristic impedance of surrounding sound transmission media through the placement of the sound absorption asbestos shell, so that sound energy enters the sound absorption material in a non-reflection way, has an absorption effect on the incident sound energy through the porous property, the film effect or the resonance effect of the sound absorption asbestos shell, is beneficial to reducing noise pollution, improves the utilization rate of equipment, can be used for reinforcing the tightness of the equipment through the placement of the sealing connector, keeps the exhaust stability of the equipment and enhances the working efficiency of the equipment.

2. The utility model can be used for isolating the inside of equipment by placing the first isolation net, increasing the filling of the inside of the equipment to reduce the exhaust noise, accelerating the heat dissipation speed, ensuring that the exhaust normally runs, and can be used for interfering and canceling each other to weaken sound intensity and reduce sound by placing the inner shell of the silencer so as to play a silencing effect.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the present utility model.

Fig. 2 is a schematic view of the sound-absorbing asbestos outer casing structure of the present utility model.

Fig. 3 is a schematic view of the structure of the inner shell of the muffler according to the present utility model.

Fig. 4 is a schematic view of a structure of a fixed exhaust disc of the present utility model.

The reference numerals are: 1. an automobile connecting plate; 2. a connecting small hole; 3. an exhaust pipe inlet; 4. an exhaust pipe; 5. sealing the connector; 6. sealing and fixing the column; 7. stabilizing the noise elimination ferrule; 8. a heat-dissipating burn-proof housing; 101. a sound absorbing asbestos outer shell; 102. a first asbestos bulb; 201. a first isolation net; 202. a muffler inner shell; 301. a muffler empty slot; 302. an asbestos inner casing; 401. a second asbestos bulb; 402. a second isolation net; 501. a collapsible expansion chamber; 502. fixing an exhaust disc; 601. a pipe holder; 602. an exhaust duct.

Detailed Description

The embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the present utility model, and the configurations of the structures described in the following embodiments are merely examples, and the exhaust muffler for an automobile engine according to the present utility model is not limited to the structures described in the following embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making any inventive effort are within the scope of the present utility model.

Embodiment case one:

referring to fig. 1-4, the utility model provides an exhaust muffler of an automobile engine, which comprises an automobile connecting plate 1, wherein a connecting small hole 2 is symmetrically formed on a side, close to the top, of the front surface of the automobile connecting plate 1, an exhaust pipe inlet 3 is formed on the front surface of the automobile connecting plate 1, a sealing connector 5 is fixedly arranged on the back surface of the automobile connecting plate 1, an exhaust pipe 4 is fixedly arranged on the back surface of the sealing connector 5, a sealing fixed column 6 is fixedly arranged on the bottom of the exhaust pipe 4, a stable silencing ferrule 7 is fixedly arranged on the bottom of the sealing fixed column 6, a heat dissipation heat-proof shell 8 is fixedly arranged on the bottom of the stable silencing ferrule 7, a sound absorption shell 101 is fixedly arranged on one side, close to the inside of the heat dissipation heat-proof shell 8, a first asbestos ball 102 is fixedly arranged on one side, and the sound characteristic impedance of surrounding sound transmission mediums can be matched through the placement of the sound absorption asbestos shell 101, so that sound energy can enter an asbestos material in a non-reflection mode, the sound energy can have an absorption effect on incidence through the functions of porosity, a film effect or a resonance effect of the sealing connector, the use rate of the sealing device is improved, the use rate of the device is improved, the heat absorption efficiency of the asbestos ball can be enhanced, the first asbestos ball can be stably placed on the surface of the device through the sealing device, and the first asbestos ball 102 is placed on the surface, and the service life of the device is greatly prolonged.

In a preferred embodiment, the first asbestos bulb 102 has a plurality of equidistant equal-size distributions on the sound-absorbing asbestos shell 101, the exhaust pipe 4 has a plurality of equidistant equal-size distributions on the top of the sealing fixing column 6, and the exhaust pipe 4 is in a curved L-shape, so that the muffler device can be sealed and fixed by placing the sealing fixing column 6, so that the exhaust gas circulates more stably, the circulating speed is accelerated, and the working efficiency of the device is improved.

In a preferred embodiment, the first isolation net 201 is fixedly installed near the center in the heat dissipation and scalding prevention outer shell 8, and the muffler inner shell 202 is fixedly installed near the center in the first isolation net 201, so that the first isolation net 201 is placed to isolate the inside of the device, the filling of the inside of the device is increased to reduce exhaust noise, the heat dissipation speed is increased, the internal structure is simple, the exhaust is normally operated, and the muffler inner shell 202 is placed to interfere and offset each other to weaken sound intensity, so that sound is reduced, and the effect of silencing is achieved.

In a preferred embodiment, the inner part of the muffler inner shell 202 is fixedly provided with the sound-absorbing asbestos inner shell 302 near the center, the top part of the sound-absorbing asbestos inner shell 302 is fixedly provided with the second asbestos bulb 401 near one side, and the front surface of the muffler inner shell 202 is provided with the muffler empty groove 301 near the center, so that the sound passes through.

The working principle of the utility model is as follows: when the device is used, the sound characteristic impedance of surrounding sound transmission media can be matched through the placement of the sound absorption asbestos shell 101, sound energy can enter the sound absorption material in a reflection-free manner, the sound energy can be absorbed through the self-porosity, the film effect or the resonance effect, noise pollution can be reduced, the use rate of the device is improved, the tightness of the device can be enhanced through the placement of the sealing connector 5, the exhaust stability of the device is kept, the working efficiency of the device is enhanced, the first asbestos ball 102 is placed on the surface of the sound absorption asbestos shell 101, the absorption effect is greatly enhanced, the service life of the device is prolonged, the device can be sealed and fixed through the placement of the sealing fixing column 6, the exhaust gas can be enabled to flow more stably, the flow speed is accelerated, the working efficiency of the device is improved, the placement of the first isolation net 201 is adopted, the device can be used for isolating the inside of the device, increasing the filling in the device to reduce the exhaust noise, accelerating the heat dissipation speed, having simple internal structure, enabling the exhaust to normally run, reducing the sound intensity by mutual offset of interference through the placement of the muffler inner shell 202, reducing the sound, thereby playing the silencing effect, finely treating the exhaust noise by the placement of the sound-absorbing asbestos inner shell 302, reducing the noise hazard, effectively improving the working speed, accelerating the exhaust circulation, and through the placement of the contractible expansion chamber 501, the compressed air can be used for exhausting after the noise is reduced by diffusion, deceleration and collision wall reflection, the energy is consumed by mutual interference, the device has the advantages of simple structure, small exhaust resistance, difficult blockage, being beneficial to the long-term use of the device, being capable of keeping the exhaust smooth by the placement of the exhaust pipeline 602, accelerating the exhaust speed, the noise reduction effect is improved.

Implementation case two:

in a preferred embodiment, the muffler hollow 301 has a plurality of equidistant and equal-sized grooves distributed on the muffler inner shell 202, and the second asbestos bulb 401 has a plurality of equidistant and equal-sized grooves distributed on the sound-absorbing asbestos inner shell 302, and the muffler hollow 301 has a rectangular shape, so that the muffler hollow 301 can be used for finely treating exhaust noise, reducing noise hazard, effectively improving working speed and accelerating exhaust circulation through the placement of the sound-absorbing asbestos inner shell 302.

In a preferred embodiment, a second isolation net 402 is fixedly installed at one side of the second asbestos ball 401, and a collapsible expansion chamber 501 is formed in the second isolation net 402 near the center, so that the collapsible expansion chamber 501 can be placed, compressed air can be used for consuming energy in the expansion chamber through diffusion, speed reduction, wall collision reflection and mutual interference, noise is reduced, and then the air is discharged.

In a preferred embodiment, the fixed exhaust disc 502 is fixedly installed near the bottom in the heat dissipation and anti-scalding shell 8, the pipe fixer 601 is fixedly installed near one side of the top of the fixed exhaust disc 502, the exhaust pipe 602 is fixedly installed near the center of the top of the pipe fixer 601, and a plurality of equidistant exhaust pipes 602 are distributed on the fixed exhaust disc 502, so that the exhaust is smooth through the placement of the exhaust pipes 602, the exhaust speed is accelerated, and the noise reduction effect is improved.

Claims (7)

1. An automobile engine exhaust muffler, comprising an automobile connection plate (1), characterized in that: the front of automobile connection board (1) is close to top one side axisymmetric and has seted up connecting aperture (2), the front of automobile connection board (1) is close to center and has seted up blast pipe entry (3), the back of automobile connection board (1) is close to center fixed mounting and has sealed connector (5), the back of sealed connector (5) is close to center fixed mounting and has blast pipe (4), the bottom of blast pipe (4) is close to center fixed mounting and has sealed fixed column (6), the bottom of sealed fixed column (6) is close to center fixed mounting and has stable noise elimination lasso (7), the bottom of stable noise elimination lasso (7) is close to center fixed mounting and has heat dissipation scald-proof shell (8), the inside of heat dissipation scald-proof shell (8) is close to one side fixed mounting and has sound absorption asbestos shell (101), the top of sound absorption asbestos shell (101) is close to one side fixed mounting and has first asbestos ball (102).

2. An automotive engine exhaust muffler as defined in claim 1, wherein: the first asbestos bulb (102) is provided with a plurality of equidistant equal-size distribution on the sound absorption asbestos shell (101), the exhaust pipe (4) is provided with a plurality of equidistant equal-size distribution on the top of the sealing fixed column (6), and the exhaust pipe (4) is in a bent L shape.

3. An automotive engine exhaust muffler as defined in claim 1, wherein: the heat dissipation anti-scalding outer shell (8) is characterized in that a first isolation net (201) is fixedly installed inside the heat dissipation anti-scalding outer shell near the center, and a muffler inner shell (202) is fixedly installed inside the first isolation net (201) near the center.

4. An automotive engine exhaust muffler according to claim 3, characterized in that: the sound absorption asbestos inner shell (302) is fixedly installed inside the silencer inner shell (202) near the center, a second asbestos ball (401) is fixedly installed on one side, near the top of the sound absorption asbestos inner shell (302), near the center, of the front face of the silencer inner shell (202) is provided with a silencer empty groove (301).

5. An automotive engine exhaust muffler as defined in claim 4, wherein: the muffler empty groove (301) is provided with a plurality of equidistant equal-sized distribution on the muffler inner shell (202), the second asbestos ball (401) is provided with a plurality of equidistant equal-sized distribution on the sound absorption asbestos inner shell (302), and the muffler empty groove (301) is in a rectangular shape.

6. An automotive engine exhaust muffler as defined in claim 5, wherein: a second isolation net (402) is fixedly arranged on one side of the second asbestos ball (401), and a contractible expansion chamber (501) is arranged in the second isolation net (402) close to the center.

7. An automotive engine exhaust muffler as defined in claim 1, wherein: the inside of heat dissipation scald-proof shell (8) is close to bottom fixed mounting and has fixed exhaust disk (502), the top of fixed exhaust disk (502) is close to one side fixed mounting and has pipeline fixer (601), the top of pipeline fixer (601) is close to central fixed mounting and has exhaust duct (602), exhaust duct (602) have a plurality of equidistance equilarge distribution on fixed exhaust disk (502).