CN210509332U

CN210509332U - Automobile silencer

Info

Publication number: CN210509332U
Application number: CN201921324578.7U
Authority: CN
Inventors: 刘圣坤; 李啸尘; 王希杰; 朱起友
Original assignee: Chongqing Hiter Automotive Exhaust Systems Co ltd
Current assignee: Hebei Haite Auto Parts Co ltd
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-05-12
Anticipated expiration: 2029-08-15

Abstract

The utility model discloses an automobile silencer, which comprises a shell, wherein the shell is provided with a near air inlet and an air outlet, two partition plates which are arranged in parallel are arranged in the shell, the partition plates divide the shell into a first chamber, a second chamber and a third chamber, the first chamber is close to the air inlet, the third chamber is close to the air outlet, the partition board is provided with a through hole, an air inlet pipe is arranged at the air inlet, the other end of the air inlet pipe penetrates through the partition plate to enter the third chamber, an air outlet pipe is arranged at the air outlet, the other end of the air outlet pipe penetrates through the clapboard to enter the first chamber, the shell is also internally provided with an air duct, two ends of the air duct are respectively positioned in the first chamber and the third chamber, first air guide holes are uniformly distributed on the surface of the air guide tube, and silencing cotton is arranged on the inner side wall of the second cavity. The utility model has the advantages of smooth exhaust, obvious noise reduction, simple structure and convenient use.

Description

Automobile silencer

Technical Field

The utility model relates to a silencer technical field especially relates to an automobile silencer.

Background

The automobile silencer is mainly used for reducing the noise generated when an engine of a motor vehicle works, and the principle is that an automobile air outlet pipe is composed of two pipelines with different lengths, the two pipelines are separated and then intersected, and the length difference value of the two pipelines is equal to half of the wavelength of sound waves emitted by an automobile, so that two rows of sound waves are interfered to be offset mutually when being superposed to weaken the sound intensity, the transmitted sound is reduced, and the silencing effect is achieved.

The automobile muffler at the present stage mostly adopts a double-pipe form, and an air inlet pipe and an air outlet pipe are arranged, so that in the actual use process, the air flowing between the air inlet pipe and the air outlet pipe is influenced, the exhaust is not smooth, the silencing effect of the muffler is influenced, the phenomena of vibration and the like can be caused, and the reduction of sound is not facilitated.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the technical problem to be solved by the present patent application is: how to provide a smooth exhaust, make an uproar obviously fall, simple structure, convenient to use's car silencer.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an automobile muffler comprises a shell, wherein the shell is provided with a near air inlet and an air outlet, two clapboards which are arranged in parallel are arranged in the shell, the baffle plate divides the housing into a first chamber, a second chamber and a third chamber, the first chamber is adjacent to the air inlet, the third chamber is close to the air outlet, a through hole is arranged on the partition plate, an air inlet pipe is arranged at the air inlet, the other end of the air inlet pipe penetrates through the partition plate to enter the third chamber, an air outlet pipe is arranged at the air outlet, the other end of the air outlet pipe penetrates through the clapboard to enter the first chamber, an air guide pipe is arranged in the shell, the two ends of the air guide tube are respectively located in the first cavity and the third cavity, first air guide holes are uniformly distributed on the surface of the air guide tube, and silencing cotton is arranged on the inner side wall of the second cavity.

When in use, the gas enters the gas inlet pipe through the gas inlet, the gas outlet end of the gas inlet pipe leads the gas into the third chamber, under the action of gas pressure, the gas enters the second chamber and the first chamber through the through holes on the partition plate in sequence and is discharged out of the shell from the gas outlet pipe in the first chamber, during the period, when the gas enters the first chamber from the third chamber, the air can enter through the air duct besides the cylinder hole of the clapboard, the air duct with larger aperture is provided, the noise caused by that the air pressure is too large and the through hole can not meet the requirement of air passing is avoided, in addition, the first air guide hole in the air guide pipe can unload air pressure in the air guide pipe, so that the pressure difference among the first chamber, the second chamber and the third chamber is not too large, the phenomenon of airflow disorder caused by backflow of gas in the first chamber is avoided, and the noise reduction cotton can absorb noise inside the shell, thereby playing a certain noise reduction role. The utility model discloses, simple structure, gas flow is smooth and easy, and noise reduction effect is obvious.

Preferably, a section of the air inlet pipe located in the second chamber is provided with a second air guide hole.

Like this, gaseous can directly get into the second cavity through the second air guide hole in the intake pipe, avoids the intake pipe internal gas pressure too big, reduces the gas flow speed too fast and the noise that produces, simultaneously can be directly with first air guide hole and through-hole cooperation, promote the gas flow.

Preferably, the number of the air outlet pipes is two, and the parts of the air outlet pipes, which are positioned in the first chamber and the third chamber, are arranged in a bending way.

Like this, two outlet ducts can independently accomplish each other when exhausting, have also reduced the gas flow disorder phenomenon when gaseous entering outlet duct, and the crooked setting can increase the area of contact of gas flow and outlet duct, the gaseous temperature of reduction of certain degree.

Preferably, one end of the air outlet pipe, which is positioned in the first cavity, is connected with a gas collecting hood.

Therefore, the air can conveniently enter the air outlet pipe, and the noise generated by the friction between the air flow and the end part of the air outlet pipe is reduced.

Preferably, the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are welded.

Thus, the installation is convenient, and the disassembly and maintenance can be carried out when faults occur.

Preferably, the upper shell and the lower shell are uniformly provided with bulges.

Therefore, the area of the shell can be enlarged, and the cooling effect is achieved.

Drawings

Fig. 1 is the utility model discloses a structural schematic of car silencer.

FIG. 2 is a schematic view of the structure of FIG. 1 with the air inlet tube, air outlet tube and air guide tube removed.

Fig. 3 is an external structural view of fig. 1.

Fig. 4 is a cross-sectional view of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, an automobile muffler includes a housing 1, the housing 1 is provided with a near air inlet and an air outlet, the housing 1 is provided with two partition plates 2 arranged in parallel, the partition plates 2 divide the housing 1 into a first chamber 21, a second chamber 22 and a third chamber 23, the first chamber 21 is close to the air inlet, the third chamber 23 is close to the air outlet, the partition plates 2 are provided with through holes 24, the air inlet is provided with an air inlet pipe 25, the other end of the air inlet pipe 25 penetrates through the partition plates 2 and enters the third chamber 23, the air outlet is provided with an air outlet pipe 26, the other end of the air outlet pipe 26 penetrates through the partition plates 2 and enters the first chamber 21, the housing 1 is further provided with an air duct 27, two ends of the air duct 27 are respectively located in the first chamber 21 and the third chamber 23, first air guide holes 28 are uniformly distributed on the surface of the air guide tube 27, and silencing cotton is arranged on the inner side wall of the second chamber 22.

In the present embodiment, a section of the air inlet pipe 25 located in the second chamber 22 is provided with a second air guide hole 29.

In this embodiment, the number of the outlet pipes 26 is two, and the outlet pipes 26 are disposed in a curved manner at portions of the first chamber 21 and the third chamber 23.

In this embodiment, one end of the air outlet pipe 26 located in the first chamber 21 is connected to the air collecting hood 3.

In this embodiment, the housing 1 includes an upper housing 11 and a lower housing 12, and the upper housing 11 and the lower housing 12 are welded.

In this embodiment, the upper housing 11 and the lower housing 12 are uniformly provided with protrusions 13.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An automobile muffler is characterized by comprising a shell, wherein the shell is provided with a near air inlet and an air outlet, two partition plates which are arranged in parallel are arranged in the shell, the partition plates divide the shell into a first chamber, a second chamber and a third chamber, the first chamber is close to the air inlet, the third chamber is close to the air outlet, the partition board is provided with a through hole, an air inlet pipe is arranged at the air inlet, the other end of the air inlet pipe penetrates through the partition plate to enter the third chamber, an air outlet pipe is arranged at the air outlet, the other end of the air outlet pipe penetrates through the clapboard to enter the first chamber, the shell is also internally provided with an air duct, two ends of the air duct are respectively positioned in the first chamber and the third chamber, first air guide holes are uniformly distributed on the surface of the air guide tube, and silencing cotton is arranged on the inner side wall of the second cavity.

2. The muffler of claim 1, wherein a section of the intake pipe located in the second chamber is provided with a second air guide hole.

3. The muffler of claim 2, wherein the number of the outlet pipes is two, and the outlet pipes are bent at portions of the first chamber and the third chamber.

4. The muffler of claim 3, wherein a gas collecting hood is connected to the outlet pipe at one end of the first chamber.

5. The automotive muffler of claim 4, wherein the housing includes an upper housing and a lower housing, the upper housing and the lower housing being welded.

6. The muffler of claim 5, wherein the upper housing and the lower housing are both provided with protrusions.