CN219431921U - Exhaust silencer for vehicle - Google Patents

Abstract

The utility model relates to a vehicle exhaust silencing device, which includes a cooling device; the cooling device includes a ventilation pipe and a cooling interlayer wrapped on the outside of the ventilation pipe, and the cooling interlayer includes a jacket arranged at intervals from the inside and outside of the ventilation pipe and arranged between the jacket and the ventilation pipe. A continuous cooling channel between the two; the resistance muffler is connected to the cooling device in the direction of gas discharge, and the resistance muffler includes several partitions, main muffler pipes and auxiliary muffler pipes, the main muffler pipe and the resistance muffler are arranged coaxially, and the auxiliary muffler There are several muffler pipes and they are evenly distributed in the circumferential direction of the main muffler pipe; the resistive muffler is arranged in communication with the resistive muffler in the direction of gas discharge, and the resistive muffler includes a sound-absorbing pipe connected with the exhaust port of the resistive muffler and arranged in the The sound-absorbing material in the circumferential direction of the sound-absorbing pipe is provided with sound-absorbing holes in the circumferential direction of the sound-absorbing pipe; the tailpipe is connected to the resistive muffler to reduce the damage to the muffler structure caused by the high-temperature gas and increase the muffler effect of the vehicle exhaust muffler. .

Description

A vehicle exhaust muffler

technical field

The utility model belongs to the technical field of vehicles, in particular to a vehicle exhaust muffler.

Background technique

Vehicle noise mainly comes from vehicle exhaust noise. If no muffler is added, the noise can reach more than 100 decibels at a certain speed. The second is engine noise and tire noise. Engine noise can reach more than 90 decibels when the car is running normally, and tire noise can reach about 95 decibels when the vehicle speed is above 90 km/h. The muffler can reduce the exhaust noise of the vehicle by 20-30 decibels.

The vehicle muffler is a special device that prevents sound transmission and allows airflow to prevent airflow dynamic noise. At present, in order to suppress the environmental noise caused by the discharge of high-pressure airflow, there are many types of mufflers in the world, most of which adopt the principle of impedance compound noise reduction. Due to the high temperature of the flue gas discharged from the vehicle system, the high temperature resistance and shock absorption performance of the conventional vehicle exhaust muffler are average. On the one hand, the high temperature gas discharged by the vehicle for a long time will damage the structure of the muffler and even affect the service life of the muffler; On the one hand, for the gas with relatively large power discharged by the vehicle, the general vehicle exhaust silencing device will still generate relatively large vibrations, resulting in poor exhaust silencing effect of the vehicle.

Utility model content

In view of this, the purpose of the utility model is to provide a vehicle exhaust muffler to solve the technical problems in the prior art that the exhaust muffler has a short service life and poor muffler effect.

In order to achieve the above object, the technical solution adopted by a vehicle exhaust muffler of the utility model is:

A vehicle exhaust silencer, comprising:

Cooling device: used to connect with the exhaust port of the vehicle engine system;

The cooling device includes a ventilation pipe and a cooling interlayer wrapped on the outside of the ventilation pipe. The cooling interlayer includes a jacket spaced from the inside and outside of the ventilation pipe and a continuous cooling channel arranged between the jacket and the ventilation pipe. The cooling interlayer includes a cooling liquid arranged at one end of the jacket The inlet and the coolant outlet arranged at the other end of the jacket;

Resistant muffler: set in communication with the cooling device in the direction of gas discharge. The resistant muffler includes several partitions and the main muffler pipe and auxiliary muffler pipe arranged between the partitions. The main muffler pipe and the resistant muffler are arranged coaxially , there are several auxiliary muffler pipes and they are evenly distributed in the circumferential direction of the main muffler pipe;

Resistive muffler: set in communication with the resistive muffler in the direction of gas discharge. The resistive muffler includes a sound-absorbing pipe connected to the exhaust port of the resistive muffler and sound-absorbing materials arranged in the circumferential direction of the sound-absorbing pipe. There are sound-absorbing holes in the circumferential direction of the sound-absorbing pipe ;

Tail pipe: set in communication with the resistive muffler.

Beneficial effects: the arrangement of the cooling device in a vehicle exhaust muffler device of the present utility model can cool the gas discharged from the engine system, thereby reducing the temperature of the gas discharged from the engine system, and ensuring the temperature of the gas discharged from the engine system before entering the muffler reduce the damage caused by the high temperature gas to the muffler structure, and prolong the service life of the muffler; in addition, a vehicle exhaust muffler of the utility model includes a resistive muffler and a resistive muffler, and the resistant muffler The middle gas collides with different positions of the main muffler pipe and the auxiliary muffler pipe to make the gas decelerate, increase the perforation rate, and improve the vibration reduction effect, so as to ensure that the gas has a better muffler effect in the resistant muffler. Not only that, The setting of the resistive muffler can absorb the shock-absorbed gas in the resistive muffler, and further dampen the noise through the sound-absorbing material, so as to further increase the muffler effect of the vehicle exhaust muffler.

Further, the continuous cooling passage is a spiral passage formed by a spiral plate fixed between the jacket and the air duct.

Beneficial effects: the continuous cooling channel is arranged as a spiral channel, and when the cooling liquid enters the cooling channel from the cooling liquid inlet, the cooling liquid can directly contact the ventilation pipe, thereby increasing the heat exchange effect between the cooling liquid and the ventilation pipe.

The resistant muffler is provided with two partitions, the two partitions are the first partition and the second partition from left to right, and the first partition and the second partition separate the resistant muffler into first An anechoic space, a second anechoic space, and a third anechoic space, the left end of the main muffler is connected to the left inlet of the resistant muffler, and the main muffler is supported between the first partition and the second partition , the right end of the main muffler pipe extends into the third muffler space.

Beneficial effects: on the one hand, the setting of the baffle can increase the impact frequency of the gas molecules in the gas entering the resistant muffler, thereby reducing the vibration frequency in the gas molecules; on the other hand, the setting of the baffle can facilitate the realization of the main noise reduction The fixing of the pipe and the auxiliary muffler pipe.

Further, the main silencing pipe is provided with silencing holes on the pipe diameters corresponding to the first silencing space and the second silencing space.

Beneficial effects: the gas in the main silencing pipe can enter the first silencing space through the silencing hole corresponding to the first silencing space, and can enter the second silencing space through the silencing hole corresponding to the second silencing space, Therefore, the gas in the main muffler pipe can directly enter the first muffler space, the second muffler space, and the third muffler space.

The auxiliary silencing pipes are provided with four, and the auxiliary silencing pipes include the first auxiliary silencing pipes and the second auxiliary silencing pipes arranged at intervals up and down, and also include the third auxiliary silencing pipes and the fourth auxiliary silencing pipes arranged at intervals before and after. The muffling pipe, the first pair of muffling pipes and the second pair of muffling pipes are bent pipes, the first pair of muffling pipes includes the first straight pipe section, the second straight pipe section, and the first straight pipe section and the second straight pipe section. The first curved pipe section, the first straight pipe section is arranged below the second straight pipe section, and the right end of the first straight pipe section is arranged in the third muffler space; the second auxiliary muffler pipe includes the third straight pipe section and the fourth straight pipe section , the second elbow end connected with the third straight pipe section and the fourth straight pipe section, the fourth straight pipe section is arranged below the third straight pipe section, and the right end of the third straight pipe section is arranged in the second anechoic space; the third pair The muffler pipe is a straight pipe supported between the first and second baffles, the fourth pair of silencing pipes is a straight pipe supported between the first and second baffles, and the third pair of silencing pipes The left end of the pipe is located on the right side of the left end of the fourth secondary silencing tube, and the right end of the third secondary silencing tube is located on the left side of the right end of the fourth secondary silencing tube.

Beneficial effects: the length and shape of the sub-muffler pipes are different, thereby changing the vibration frequency of the gas entering each sub-muffler pipe, reducing the probability of resonance of the gas in each sub-muffler pipe, thereby The gas in the muffler pipe is muffled to ensure that the resistant muffler has a better muffler effect.

Silencer cotton is fixedly arranged on the inner wall of the shell of the resistant muffler.

Beneficial effect: the arrangement of the sound-absorbing cotton can further weaken the vibration frequency of the gas entering the resistant muffler, thereby further increasing the sound-absorbing effect of the resistant muffler.

The sound-absorbing material of the resistive muffler is porous sound-absorbing cotton.

Beneficial effect: the porous sound-absorbing cotton can increase the sound-absorbing effect of the resistive muffler.

The first baffle and the second baffle are provided with installation holes adapted to the main silencing pipe and each auxiliary silencing pipe, and the first baffle is provided with a wall connecting the first silencing space and the second silencing space The second partition is provided with a through hole communicating with the second anechoic space and the third anechoic space.

Beneficial effects: the opening of the through holes on the first baffle and the second baffle can increase the flow of gas between the first anechoic space and the second anechoic space, and between the second anechoic space and the third anechoic space. flow.

A first bellows is connected between the cooling device and the exhaust port of the engine system, a second bellows is connected between the cooling device and the resistive muffler, and a second bellows is connected between the resistive muffler and the resistive muffler. Third bellows.

Beneficial effects: the arrangement of the first bellows, the second bellows, and the third bellows can reduce the damage caused by the vibrating gas to the cooling device, the resistive muffler, and the resistive muffler, and prolong the length of the cooling device, the resistive muffler, and the resistive muffler. The service life of the muffler.

Description of drawings

Fig. 1 is the structural representation of a kind of vehicle exhaust muffler device of the present utility model;

Fig. 2 is the plan view of resistant muffler among Fig. 1;

Fig. 3 is a structural representation of the resistive muffler in Fig. 1;

Fig. 4 is the structural representation of the first partition of the resistant muffler in Fig. 1;

Fig. 5 is a schematic structural view of the second partition of the resistant muffler in Fig. 1 .

Reference signs: 1-first bellows; 2-second bellows; 3-third bellows; 4-cooling device; 5-cooling channel; 6-resistance muffler; 7-first partition; 8- The second partition; 9-muffling cotton; 10-main muffler pipe; 11-first auxiliary muffler pipe; 12-second auxiliary muffler pipe; 13-resistive muffler; 14-tail pipe; 15-third Secondary muffler pipe; 16-the fourth vice muffler pipe; 17-installation hole; 18-through hole.

Detailed ways

A vehicle exhaust muffler device of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments:

As shown in Figure 1 below, a vehicle exhaust muffler device of the present invention includes a cooling device 4 connected to the exhaust port of the vehicle engine system, in the direction of gas discharge (that is, the left and right direction in Figure 1) and the cooling device 4 The resistive muffler 6 communicated with the resistive muffler 6 and the resistive muffler 13 communicated with the resistive muffler 6 are provided. The cooling device 4 can cool down the gas discharged from the exhaust port of the vehicle engine, so that the temperature of the gas entering the resistive muffler 6 and the resistive muffler 13 is lower, and the high-temperature gas discharged from the exhaust port is prevented from continuing to resist the resistive muffler 6 and the resistive muffler 13 for a long time. The structure of the resistive muffler 13 causes damage, which affects the service life of the resistive muffler 6 and the resistive muffler 13 . The exhaust muffler device of the present utility model includes a resistive muffler 6 and a resistive muffler 13, and the vibrating gas passes through the resistive muffler 6 and the resistive muffler 13 successively, so that the vibration of the gas can be reduced as much as possible to reduce the vibration of the gas. Muffling.

Specifically, the cooling device 4 includes a ventilation duct and a cooling interlayer wrapped on the outside of the ventilation duct. The cooling interlayer includes an outer jacket spaced from the inside and outside of the ventilation duct and a continuous cooling channel 5 arranged between the outer jacket and the ventilation duct. The cooling interlayer includes a The coolant inlet at one end of the jacket and the coolant outlet at the other end of the jacket. In this embodiment, the continuous cooling passage 5 is a spiral passage formed by a spiral plate fixed between the jacket and the air duct. The continuous cooling channel 5 is arranged as a spiral channel, and when the cooling liquid enters the cooling channel 5 from the cooling liquid inlet, the cooling liquid can directly contact the ventilation pipe, which increases the heat exchange effect between the cooling liquid and the ventilation pipe. In order to facilitate the installation of the cooling device 4, in this embodiment, two supporting legs are fixedly arranged on the lower part of the cooling interlayer of the cooling device 4, and fixing holes are opened at the bottom of the two supporting legs. In this embodiment, the cooling liquid is cooling water.

Resistant muffler 6 comprises several clapboards and main muffler pipe 10 and secondary muffler pipe that are arranged between the clapboards, in the present embodiment, the shell of main muffler is cylindrical, main muffler pipe 10 and resistance muffler 6 Arranged coaxially, the auxiliary muffler pipe is provided with a number of cuts evenly distributed in the 10 circumferential directions of the main muffler pipe.

Specifically, in the resistant muffler 6, two partitions are arranged at intervals on the left and right, and the two partitions are the first partition 7 and the second partition 8 from left to right, and the first partition 7 and the second partition 8 The resistant muffler 6 is divided into the first muffler space, the second muffler space, and the third muffler space. The left end of the main muffler pipe 10 is connected to the left inlet of the resistant muffler 6, and the main muffler pipe 10 is supported on the second Between a dividing plate 7 and the second dividing plate 8, the right end of the main muffler pipe 10 extends into the third muffler space, and the diameter of the main muffler pipe 10 corresponding to the first muffler space and the second muffler space Both are provided with muffler holes, and the gas in the main muffler pipe 10 can enter the first muffler space through the muffler holes corresponding to the first muffler space, and can enter through the muffler holes corresponding to the second muffler space. The second silencing space, so that the gas in the main silencing pipe 10 can directly enter the first silencing space, the second silencing space, and the third silencing space.

There are four auxiliary silencing pipes, and the auxiliary silencing pipes include the first auxiliary silencing pipe 11 and the second auxiliary silencing pipe 12 arranged at intervals up and down, and the third auxiliary silencing pipe 15 and the fourth auxiliary silencing pipe arranged at intervals before and after. Secondary silencing pipe 16, the first secondary silencing pipe 11 and the second secondary silencing pipe 12 are bent pipes, and the first secondary silencing pipe 11 includes a first straight pipe section, a second straight pipe section, and the first straight pipe section and the second straight pipe section. The first curved pipe section connected by two straight pipe sections, the first straight pipe section is arranged below the second straight pipe section, the left end of the first straight pipe section is located in the first anechoic space, and the right end of the first straight pipe section is arranged in the third anechoic space , the left end of the second straight pipe section is located in the first anechoic space, the right end of the second straight pipe section is located in the third anechoic space, and the second straight pipe section is flush with the left end of the first straight pipe section, and the right end of the second straight pipe section Located on the right side of the right end of the first straight pipe section, the first bent pipe section is arranged in the first anechoic space.

The second auxiliary muffler pipe 12 includes a third straight pipe section, a fourth straight pipe section, a second bent pipe section communicated with the third straight pipe section and the fourth straight pipe section, the fourth straight pipe section is arranged below the third straight pipe section, and the fourth straight pipe section is arranged below the third straight pipe section. The left end of the three straight pipe sections is set in the first anechoic space, the right end of the third straight pipe section is set in the second anechoic space; the left end of the fourth straight pipe section is set in the first anechoic space, and the right end of the fourth straight pipe section Set in the third anechoic space, and the left end of the third straight pipe section is flush with the left end of the fourth straight pipe section, the right end of the third straight pipe section is located on the right side of the right end of the fourth straight pipe section, and the second bent pipe section is located at the right end of the fourth straight pipe section In an anechoic space.

The third sub-muffler pipe 15 is a straight pipe supported between the first partition 7 and the second partition 8, and the fourth sub-muffler pipe 16 is supported between the first partition 7 and the second partition 8. Straight pipe, the left end of the third secondary silencing pipe 15 is positioned at the right side of the fourth secondary silencing pipe 16 left end, and the right end of the third secondary silencing pipe 15 is positioned at the left side of the fourth secondary silencing pipe 16 right end. In this embodiment, the lengths of the secondary silencing pipes are different, so that the vibration frequency of the gas entering the secondary silencing pipes can be changed according to the time that the gas passes through the secondary silencing pipes, reducing the The probability of resonance generated by the gas in each of the auxiliary silencing pipes, so as to eliminate the sound of the gas entering each of the auxiliary silencing pipes, and ensure that the resistant muffler 6 has a better silencing effect.

In order to further increase the sound-absorbing effect of the resistant muffler 6 , in this embodiment, a sound-absorbing cotton 9 is fixedly arranged on the inner wall of the shell of the resistant muffler 6 . In order to facilitate the installation of the main muffler pipe 10 and the auxiliary muffler pipes, the first partition 7 and the second partition 8 are respectively provided with mounting holes 17 adapted to the main muffler pipe 10 and each auxiliary muffler pipe, Not only that, in order to increase the circulation of gas in the first anechoic space and the second anechoic space, a through hole 18 communicating the first anechoic space and the second anechoic space is opened on the first partition 7; For communication between the second anechoic space and the third anechoic space, a through hole 18 communicating the second anechoic space and the third anechoic space is opened on the second partition 8 .

The resistive muffler 13 is arranged in communication with the resistive muffler 6 in the gas discharge direction (that is, the left and right direction), and the resistive muffler 13 includes a sound-absorbing pipe communicated with the exhaust port of the resistive muffler 6 and a sound-absorbing material arranged in the circumferential direction of the sound-absorbing pipe , the circumference of the sound-absorbing pipe is provided with sound-absorbing holes, so that the gas holes and sound-absorbing holes in the sound-absorbing pipe can enter the sound-absorbing material. In this embodiment, the sound-absorbing material of the resistive muffler 13 is porous sound-absorbing cotton.

In order to reduce the damage caused by the vibrating gas to the cooling device 4, the resistive muffler 6, and the resistive muffler 13, in this embodiment, a first bellows 1 is connected between the cooling device and the exhaust port of the engine system, so that The second bellows 2 is connected between the cooling device 4 and the resistive muffler 6 , and the third bellows 3 is connected between the resistive muffler 6 and the resistive muffler 13 .

The resistive muffler 13 is communicated with a tailpipe 14 , and the cooled and silenced gas is finally discharged from the tailpipe 14 .

In the vehicle exhaust silencer device of the present utility model, the gas discharged from the exhaust port of the vehicle engine system first passes through the cooling device 4, and when the gas passes through the ventilation pipe of the cooling device 4, the gas is exchanged with the cooling liquid in the continuous cooling channel 5. Heat, the cooling liquid takes away the heat in the gas in the vent pipe, thereby cooling the gas, preventing the overheated gas from causing damage to the resistive muffler 6 and the resistive muffler 13. The cooled gas first enters the resistant muffler 6. In the resistant muffler 6, the gas is divided into multiple channels, and the gas molecules collide continuously in the resistant muffler 6, reducing the probability of separate resonance of the gases in each channel, thereby decelerating the gas. , reduce the overall vibration frequency of the gas, so as to silence the gas; the gas silenced by the resistive muffler 6 continues to enter the resistive muffler 13, and in the resistive muffler 13, the gas enters the porous sound-absorbing material around the sound-absorbing pipe, and the sound-absorbing The material increases the sound-absorbing effect of the resistive muffler 13 , and finally, the gas passing through the resistive muffler 13 is discharged from the tailpipe 14 .

In the above embodiments, the continuous cooling channel is a spiral channel formed by a spiral plate fixed between the jacket and the air duct; in other embodiments, the continuous cooling channel may also be a continuous cooling channel.

In the above embodiments, two partitions are arranged in the resistant muffler; in other embodiments, three partitions are arranged in the resistant muffler.

In the above embodiments, there are four auxiliary muffling pipes; in other embodiments, there are six auxiliary muffling pipes.

In the above embodiments, the sound-absorbing cotton is fixedly arranged on the inner wall of the housing of the resistant muffler; in other embodiments, the sound-absorbing cotton may not be provided.

In the above embodiment, the first partition is provided with a through hole connecting the first anechoic space and the second anechoic space, and the second partition is provided with a through hole connecting the second anechoic space and the third anechoic space ; In other embodiments, the through holes of the first partition and the second partition may not be provided.

In the above embodiment, a first bellows is connected between the cooling device and the exhaust port of the engine system, a second bellows is connected between the cooling device and the resistive muffler, and the resistive muffler is connected to the resistive muffler. A third bellows is connected between the mufflers; in other embodiments, the first bellows, the second bellows, and the third bellows may not be provided.

Claims (9)

1. A vehicle exhaust muffler device, characterized by comprising:

and a cooling device: for connection to an exhaust port of a vehicle engine system;

the cooling device comprises a ventilation pipeline and a cooling interlayer wrapping the outer side of the ventilation pipeline, the cooling interlayer comprises a jacket and a continuous cooling channel, the jacket is arranged inside and outside the ventilation pipeline at intervals, the continuous cooling channel is arranged between the jacket and the ventilation pipeline, and the cooling interlayer comprises a cooling liquid inlet and a cooling liquid outlet, the cooling liquid inlet is arranged at one end of the jacket, and the cooling liquid outlet is arranged at the other end of the jacket;

resistance muffler: the reactive muffler comprises a plurality of clapboards, a main muffler pipe and a secondary muffler pipe which are arranged among the clapboards, wherein the main muffler pipe and the reactive muffler are coaxially arranged, and the secondary muffler pipes are provided with a plurality of and uniformly distributed in the circumferential direction of the main muffler pipe;

resistive muffler: the gas exhaust direction is communicated with the resistance muffler, the resistance muffler comprises a sound absorption pipeline communicated with an exhaust port of the resistance muffler and a sound absorption material arranged on the circumference of the sound absorption pipeline, and sound absorption holes are formed in the circumference of the sound absorption pipeline;

tail pipe: is communicated with the resistive muffler.

2. A vehicle exhaust silencer according to claim 1, wherein the continuous cooling passage is a spiral passage formed by a spiral plate fixed between the jacket and the vent pipe.

3. The exhaust silencer of claim 1 or 2, wherein two partition boards are arranged in the resistive silencer, the two partition boards are a first partition board and a second partition board in sequence from left to right, the first partition board and the second partition board divide the resistive silencer into a first silencing space, a second silencing space and a third silencing space, the left end of the main silencing pipe is connected with the left inlet of the resistive silencer, the main silencing pipe is supported between the first partition board and the second partition board, and the right end of the main silencing pipe extends into the third silencing space.

4. A vehicle exhaust muffler according to claim 3, wherein the main muffler pipe has muffler holes formed in pipe diameters corresponding to the first muffler space and the second muffler space.

5. The vehicle exhaust silencer according to claim 3, wherein the four auxiliary silencing pipes are provided, each auxiliary silencing pipe comprises a first auxiliary silencing pipe and a second auxiliary silencing pipe which are arranged at intervals up and down, a third auxiliary silencing pipe and a fourth auxiliary silencing pipe which are arranged at intervals front and back, the first auxiliary silencing pipe and the second auxiliary silencing pipe are bent pipes, the first auxiliary silencing pipe comprises a first straight pipe section, a second straight pipe section and a first bent pipe section communicated with the first straight pipe section and the second straight pipe section, the first straight pipe section is arranged below the second straight pipe section, and the right end of the first straight pipe section is arranged in the third silencing space; the second auxiliary silencing pipe comprises a third straight pipe section, a fourth straight pipe section and a second bent pipe section communicated with the third straight pipe section and the fourth straight pipe section, the fourth straight pipe section is arranged below the third straight pipe section, and the right end of the third straight pipe section is arranged in the second silencing space; the third pair of silencing tubes are straight tubes supported between the first partition plate and the second partition plate, the fourth pair of silencing tubes are straight tubes supported between the first partition plate and the second partition plate, the left end of each third pair of silencing tubes is located on the right side of the left end of each fourth pair of silencing tubes, and the right end of each third pair of silencing tubes is located on the left side of the right end of each fourth pair of silencing tubes.

6. A vehicle exhaust silencer according to claim 1 or 2, wherein the reactive silencer housing inner wall is fixedly provided with silencing cotton.

7. A vehicle exhaust muffler according to claim 1 or 2, wherein the sound absorbing material of the resistive muffler is porous sound absorbing cotton.

8. A vehicle exhaust silencer according to claim 3, wherein the first and second partition plates are provided with mounting holes adapted to the main silencing pipes and the auxiliary silencing pipes, the first partition plate is provided with a through hole for communicating the first silencing space with the second silencing space, and the second partition plate is provided with a through hole for communicating the second silencing space with the third silencing space.

9. A vehicle exhaust silencer according to claim 1 or 2, characterized in that a first bellows is connected between the cooling device and the exhaust port of the engine system, a second bellows is connected between the cooling device and the resistive muffler, and a third bellows is connected between the resistive muffler and the resistive muffler.