CN214170646U

CN214170646U - Vehicle engine silencer

Info

Publication number: CN214170646U
Application number: CN202023210214.1U
Authority: CN
Inventors: 李会利; 苏继龙
Original assignee: Sanhe Keda Science & Technology Co ltd
Current assignee: Sanhe Keda Science & Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-09-10
Anticipated expiration: 2030-12-28

Abstract

The application provides a vehicle engine silencer, which comprises a shell, wherein the side walls of two ends of the shell are respectively connected with an air inlet pipe and an exhaust pipe; a first pipe body, a second pipe body and a third pipe body are arranged in the shell, one end of the first pipe body is communicated with the air inlet pipe, and the other end of the first pipe body is provided with a blocking plate; one end of the second pipe body is communicated with the exhaust pipe; the first pipe body is provided with a first vent hole section, a second vent hole section, a third vent hole section and a fourth vent hole section which are provided with through holes, and the first vent hole section is arranged at one side close to the air inlet pipe; the second pipe body is provided with a fifth vent hole section and a sixth vent hole section which are provided with through holes, and the sixth vent hole section is arranged on one side close to the exhaust pipe; and a seventh vent hole section with a through hole is arranged on the third pipe body. The beneficial effect of this application is: make in the casing form a plurality of noise elimination chambeies through setting up a plurality of bodys, the air current passes and converges at the noise elimination intracavity behind each vent section for the air current carries out combined type noise elimination in the casing, compact structure, and noise reduction effect is good and reduce the power loss that causes the vehicle.

Description

Vehicle engine silencer

Technical Field

The disclosure relates to the technical field of silencers, in particular to a silencer of a vehicle engine.

Background

With the increasing health requirements, the emission requirements and energy consumption requirements of mufflers of engine vehicles are higher and higher. The directions of vehicle muffler research were: good noise reduction, low back pressure, small power loss to the engine, energy conservation, low manufacturing cost and the like. The existing silencer structure has high back pressure on an engine, so that the power loss of the engine is large, and energy can do useless work; and the noise reduction effect is not good, so that the emission noise of the engine is high.

Disclosure of Invention

The object of the present application is to provide a vehicle engine muffler that addresses the above problems.

In a first aspect, the present application provides a vehicle engine muffler, comprising a housing, wherein side walls at two ends of the housing are respectively connected with an intake pipe and an exhaust pipe; a first pipe body, a second pipe body and a third pipe body are arranged in the shell in parallel, one end of the first pipe body is communicated with the air inlet pipe, and the other end of the first pipe body is provided with a blocking plate; one end of the second pipe body is communicated with the exhaust pipe;

the first pipe body is provided with a first vent hole section, a second vent hole section, a third vent hole section and a fourth vent hole section which are provided with through holes, and the first vent hole section is arranged on one side close to the air inlet pipe; a fifth vent hole section and a sixth vent hole section with through holes are arranged on the second pipe body, and the sixth vent hole section is arranged on one side close to the exhaust pipe; and a seventh vent hole section with a through hole is arranged on the third pipe body.

According to the technical scheme provided by the embodiment of the application, a first partition plate, a second partition plate and a third partition plate are sequentially arranged in parallel in the shell, and the first partition plate is arranged on one side close to the air inlet pipe; the first pipe body is vertically connected with the first partition plate, the second partition plate and the third partition plate, the second pipe body is vertically connected with the first partition plate, the second partition plate and the third partition plate, and the third pipe body is vertically connected with the first partition plate and the second partition plate; and the third partition plate is provided with uniform air passing holes.

According to the technical scheme that this application embodiment provided, correspond in the casing first body sets up first sleeve pipe, first sleeve pipe vertical fixation is in on the first baffle, first venthole section cover is established in the first sleeve pipe.

According to the technical scheme that this application embodiment provided, correspond in the casing the second body sets up the second sleeve pipe, second sleeve pipe vertical fixation is on second baffle and third baffle, the sixth ventilation hole section cover is established in the second sleeve pipe.

According to the technical scheme provided by the embodiment of the application, the diameter of the through hole on the first vent hole section is not more than 1 mm.

According to the technical scheme that this application embodiment provided, the casing includes the barrel, the both ends of barrel set up front end housing and rear end cap respectively, be equipped with the through-hole on front end housing and the rear end cap respectively, the intake pipe passes behind the through-hole of front end housing and is connected with first vent hole section, the blast pipe passes behind the through-hole of rear end cap and is connected with sixth vent hole section.

According to the technical scheme provided by the embodiment of the application, the air inlet pipe is far away from the end connecting flange of the first vent hole section.

According to the technical scheme provided by the embodiment of the application, the front end cover and the rear end cover are respectively provided with a plurality of hooks.

The invention has the beneficial effects that: the application provides a vehicle engine silencer, make to form a plurality of noise elimination chambeies in the casing through setting up a plurality of bodys, the air current passes and joins at the noise elimination intracavity behind each breather hole section, make the air current carry out combined type noise elimination in the casing, can be to high, in, the noise elimination of making an uproar falls in low full frequency channel, silencer compact structure, the backpressure that produces the engine is low, and the loss that causes the power of engine is little, the noise reduction effect to the engine emission is good, the reasonable relation of backpressure and noise of having handled, both controlled the noise and reduced the backpressure, and the popularization is facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present application;

FIG. 2 is a schematic axial view of the interior of a muffler according to a first embodiment of the present invention;

fig. 3 and 5 are schematic front view structures of the interior of a silencer in the first embodiment of the application;

FIG. 4 is a schematic view of the structure in the direction B-B in FIG. 3;

the text labels in the figures are represented as: 1, air inlet pipe; 2. a barrel; 3. a first sleeve; 4. a first pipe body; 5. a second tube body; 6. a third tube; 7. a second sleeve; 8. a blocking plate; 9. an exhaust pipe; 10. a rear end cap; 11. a third partition plate; 12. a second separator; 13. a first separator; 14. a front end cover; 15. a flange; 16. hooking; 17. and (4) air passing holes.

Detailed Description

In order that those skilled in the art will better understand the technical solutions of the present invention, the following detailed description of the present invention is provided in conjunction with the accompanying drawings, and the description of the present section is only exemplary and explanatory, and should not be construed as limiting the scope of the present invention in any way.

As shown in fig. 1 to 5, the muffler of the present application includes a housing, and an intake pipe 1 and an exhaust pipe 9 are respectively connected to side walls of two ends of the housing; a first pipe body 4, a second pipe body 5 and a third pipe body 6 are arranged in the shell in parallel, one end of the first pipe body 4 is communicated with the air inlet pipe 1, and the other end of the first pipe body is provided with a blocking plate 8; one end of the second pipe 5 is communicated with the exhaust pipe 9. In this embodiment, the casing is rolled up by double-deck material is continuous, and the leakproofness of casing is strong, and noise reduction is better.

The first pipe body 4 is provided with a first vent hole section, a second vent hole section, a third vent hole section and a fourth vent hole section which are provided with through holes, and the first vent hole section is arranged on one side close to the air inlet pipe 1; a fifth vent hole section and a sixth vent hole section with through holes are arranged on the second pipe body 5, and the sixth vent hole section is arranged on one side close to the exhaust pipe 9; the third pipe body 6 is provided with a seventh vent hole section with a through hole. In this embodiment, four vent hole sections are provided on the first tube 4, two vent hole sections are provided on the second tube 5, and one vent hole section is provided on the third tube 6.

In this embodiment, since the through holes on the first vent hole section connected to the air inlet pipe 1 are micro-perforated, the aperture of the through holes on the first vent hole section is smaller than the apertures of the through holes on the other vent hole sections. Preferably, the diameter of the through hole on the first vent hole section is not more than 1 mm. In the preferred embodiment, the diameters of the through holes of the second, third, and fourth vent hole sections are set to 4mm, and the diameters of the through holes of the fifth, sixth, and seventh vent hole sections are set to 3.5 mm.

In this embodiment, a first partition plate 13, a second partition plate 12 and a third partition plate 11 are sequentially arranged in parallel in the housing, and the first partition plate 13 is arranged on one side close to the air inlet pipe 1; the first pipe body 4 is vertically connected with a first partition plate 13, a second partition plate 12 and a third partition plate 11, the second pipe body 5 is vertically connected with the first partition plate 13, the second partition plate 12 and the third partition plate 11, and the third pipe body 6 is vertically connected with the first partition plate 13 and the second partition plate 12; and the third partition plate 11 is provided with uniform air passing holes 17.

In this embodiment, a first sleeve 3 is disposed in the casing corresponding to the first pipe body 4, the first sleeve 3 is vertically fixed on the first partition plate 13, and the first vent hole section is sleeved in the first sleeve 3. A second guide sleeve 7 is arranged in the shell corresponding to the second pipe body 5, the second sleeve 7 is vertically fixed on a second partition plate 12 and a third partition plate 11, and the sixth vent hole section is sleeved in the second sleeve 7. In this embodiment, the pipe diameter of the first sleeve 3 is greater than that of the first pipe 4, and the pipe diameter of the second sleeve 7 is greater than that of the second pipe 5.

In a preferred embodiment, the housing includes a cylinder 2, a front end cap 14 and a rear end cap 10 are respectively disposed at two ends of the cylinder 2, through holes are respectively disposed on the front end cap 14 and the rear end cap 10, the air inlet pipe 1 passes through the through hole of the front end cap 14 and then is connected to the first vent hole section, and the air outlet pipe 9 passes through the through hole of the rear end cap 10 and then is connected to the sixth vent hole section.

In a preferred embodiment, the air inlet tube 1 is connected to the flange 15 at the end remote from the first segment. The flange 15 is provided at the end of the inlet pipe 1 to facilitate mounting of the muffler to the engine.

In a preferred embodiment, the front cover 14 and the rear cover 10 are respectively provided with a plurality of hooks 16. The hooks 16 are provided to facilitate the fixed mounting of the muffler.

As shown in fig. 5, the working process of the muffler of the present embodiment is as follows: waste gas discharged by an engine enters a first pipe body 4 through an air inlet pipe 1, and airflow passing through the micro-perforation of the first vent hole section enters an impedance composite silencing cavity a with high sound resistance and low sound quality formed by a gap between the first vent hole section and the first sleeve 3 to perform one-time medium-high frequency silencing; the air flow passing through the through hole of the fourth vent hole section enters an expansion silencing cavity b for low-medium frequency narrow-band resistance silencing; the air flow passing through the through hole of the fourth vent hole section passes through the air passing hole 17 of the third partition plate 11 and then enters the expansion interference muffling cavity c, and then is converged with the air flow passing through the through hole of the third vent hole section to perform interference muffling in the expansion interference muffling cavity c; the converged airflow which penetrates out of the fourth vent hole section and the third vent hole section and the converged airflow which penetrates out of the seventh vent hole section and the second vent hole section perform interference noise elimination in the expansion cavity d, and the airflow after the interference noise elimination enters the fifth vent hole section; the air flow penetrating through the through hole of the seventh vent hole section is subjected to interference resistance noise elimination in the expansion noise elimination cavity f, the air flow enters the fifth vent hole section after noise elimination and is converged with the air flow in the fifth vent hole section, the converged air flow is subjected to resonance noise elimination in a resonance noise elimination cavity e formed by the gap between the sixth vent hole section and the second sleeve 7, and the air flow preferably enters the atmosphere through an exhaust pipe 9. The whole working process is subjected to primary micro-perforation noise elimination, secondary expansion resistance noise elimination, secondary expansion passive interference noise elimination and primary resonance noise elimination. The silencer has compact structure, full utilization of silencing resources, beautiful appearance and convenient installation.

The principles and embodiments of the present application are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present application. The foregoing is only a preferred embodiment of the present application, and it should be noted that there are objectively infinite specific structures due to the limited character expressions, and it will be apparent to those skilled in the art that a plurality of modifications, decorations or changes may be made without departing from the principle of the present application, and the technical features described above may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments, or may be learned by practice of the invention.

Claims

1. A vehicle engine silencer is characterized by comprising a shell, wherein the side walls at two ends of the shell are respectively connected with an air inlet pipe and an exhaust pipe; a first pipe body, a second pipe body and a third pipe body are arranged in the shell in parallel, one end of the first pipe body is communicated with the air inlet pipe, and the other end of the first pipe body is provided with a blocking plate; one end of the second pipe body is communicated with the exhaust pipe;

2. The vehicle engine muffler according to claim 1, wherein a first partition, a second partition, and a third partition are provided in parallel in this order in the housing, the first partition being provided on a side close to the intake pipe; the first pipe body is vertically connected with the first partition plate, the second partition plate and the third partition plate, the second pipe body is vertically connected with the first partition plate, the second partition plate and the third partition plate, and the third pipe body is vertically connected with the first partition plate and the second partition plate; and the third partition plate is provided with uniform air passing holes.

3. The muffler of claim 2, wherein a first sleeve is disposed in the housing corresponding to the first pipe, the first sleeve is vertically fixed to the first partition, and the first vent section is disposed in the first sleeve.

4. The muffler of claim 2, wherein a second sleeve is disposed in the housing corresponding to the second tube, the second sleeve is vertically fixed to the second partition and the third partition, and the sixth vent segment is disposed in the second sleeve.

5. The vehicle engine muffler of claim 1, wherein a diameter of the through-hole on the first vent segment is no greater than 1 mm.

6. The muffler of claim 1, wherein the housing comprises a cylinder, a front cover and a rear cover are respectively disposed at two ends of the cylinder, through holes are respectively disposed on the front cover and the rear cover, the intake pipe passes through the through hole of the front cover and is connected to the first vent hole section, and the exhaust pipe passes through the through hole of the rear cover and is connected to the sixth vent hole section.

7. The vehicle engine muffler of claim 6, wherein an end of the intake pipe distal from the first vent segment is connected to the flange.

8. The vehicle engine muffler of claim 6, wherein a plurality of hooks are provided on the front cover and the rear cover, respectively.