CN206092114U - Muffler - Google Patents

Abstract

The utility model provides a muffler which includes casing, a plurality of baffle, intake pipe and first outlet duct and second outlet duct. A plurality of baffles include first baffle, second baffle, third baffle and fourth baffle that the interval set up. The casing is including being located first cavity between second baffle and the third baffle, being located second cavity between first baffle and the second baffle, being located third cavity between third baffle and the fourth baffle, being located the fourth cavity on one side of the first baffle and being located the 5th cavity of fourth baffle opposite side. The intake pipe is located first cavity and the intake pipe is equipped with a plurality of first trompils. Still including cup jointing the sleeve pipe in the intake pipe, wherein the sleeve pipe is equipped with a plurality of second trompils to muffler. Muffler still is equipped with the connecting pipe with intake -tube connection. The connecting pipe passes the third baffle with the fourth baffle is gone into in order to extend in the 5th cavity. So set up, improved muffler's acoustic effect.

Description

Acoustic filter

Technical field

This utility model is related to a kind of acoustic filter, belongs to engine exhaust post-processing technology field.

Background technology

In passenger car field, acoustic filter is the device of the reduction noise being widely used on car.Acoustic filter how is set to exist With good acoustic efficiency it is person of ordinary skill in the field's technical issues that need to address during work.

Utility model content

The purpose of this utility model is to provide a kind of acoustic efficiency preferable acoustic filter.

For achieving the above object, this utility model is adopted the following technical scheme that：A kind of acoustic filter, it includes housing, is located at Some baffle plates, air inlet pipe and the first escape pipe and the second escape pipe extended in the housing in the housing, wherein The housing includes upper shell and the lower house welded together with the upper shell；Some baffle plates include interval setting First baffle, second baffle, third baffle and fourth gear plate, the housing includes being located at the second baffle with described the The first cavity between three baffle plates, the second cavity between the first baffle and the second baffle, positioned at described The 3rd cavity, the 4th cavity positioned at the first baffle side between three baffle plates and the fourth gear plate and positioned at described 5th cavity of fourth gear plate opposite side；The air inlet pipe is located in first cavity and the air inlet pipe is provided with some first Perforate；The acoustic filter also includes the sleeve pipe being socketed in the air inlet pipe, and wherein described sleeve pipe is provided with some second perforates；Institute State acoustic filter and be additionally provided with the connecting tube being connected with the air inlet pipe, the connecting tube is through the third baffle and the fourth gear Plate is extending in the 5th cavity；First escape pipe passes through the first baffle with the second baffle to extend into In first cavity, first escape pipe is provided with the first rake being tilted in first cavity, and described second goes out Trachea passes through the third baffle with the fourth gear plate to extend in first cavity, and second escape pipe is provided with and inclines Oblique the second rake in first cavity.

As the further improved technical scheme of this utility model, the acoustic filter be provided be welded on the second baffle with Gripper shoe between the third baffle, the gripper shoe is provided with some perforation connected with first cavity；Described first Perforate is located at the side of the gripper shoe, and the air inlet pipe is additionally provided with some three of the opposite side positioned at the gripper shoe and opens Hole.

Used as the further improved technical scheme of this utility model, the length of described sleeve pipe is less than the length of the air inlet pipe Degree, and described sleeve pipe is located at the side of the gripper shoe.

As the further improved technical scheme of this utility model, what first perforate was distributed in the air inlet pipe Length is equal to the length that second perforate is distributed in described sleeve pipe.

Used as the further improved technical scheme of this utility model, the caliber of the connecting tube is less than the pipe of the air inlet pipe Footpath.

Used as the further improved technical scheme of this utility model, the connecting tube includes be connected with the air inlet pipe One body, extend vertically from first body and through the third baffle and the second body of the fourth gear plate, from institute State the second body and extend vertically and parallel to the 3rd body of first body and from the 3rd body towards described The 4th body that four baffle plates extend.

Used as the further improved technical scheme of this utility model, the 3rd body is with second body not same In horizontal plane.

Used as the further improved technical scheme of this utility model, the 3rd body and the 4th body are below Second body.

Used as the further improved technical scheme of this utility model, first rake is leaned on second rake Nearly first body.

As the further improved technical scheme of this utility model, the first baffle be communicated with second cavity with Some first circular holes of the 4th cavity；If the second baffle is communicated with first cavity with second cavity Dry second circular hole；The third baffle is communicated with some 3rd circular holes of the 3rd cavity and first cavity；It is described Fourth gear plate is not provided with connecting the hole of the 3rd cavity and the 5th cavity.

Compared to prior art, this utility model is by arranging the sleeve pipe being socketed in the air inlet pipe, and described sleeve pipe Some second perforates are provided with, so as to improve acoustic efficiency.

Description of the drawings

Fig. 1 is the schematic perspective view of this utility model acoustic filter.

Fig. 2 is the schematic perspective view of another angles of Fig. 1.

Fig. 3 is the part isometric exploded view of Fig. 1.

Fig. 4 is to remove in Fig. 3 further three-dimensional exploded view after housing.

Fig. 5 is the further three-dimensional exploded views of Fig. 3.

Fig. 6 is the profile of the line A-A along Fig. 1.

Specific embodiment

Please join shown in Fig. 1 to Fig. 6, this utility model discloses a kind of acoustic filter 100, it includes housing 1, positioned at the shell Some baffle plates 2, the escape pipe 41 of air inlet pipe 3 and first and the second escape pipe 42 extended in the housing 1 in body 1, its Described in housing 1 include upper shell 11 and the lower house 12 that welds together with the upper shell 11.

Some baffle plates 2 include spaced first baffle 21, second baffle 22, third baffle 23 and fourth gear Plate 24, the housing 1 is included positioned at the first cavity 10 between the second baffle 22 and the third baffle 23, positioned at described The second cavity 20 between first baffle 21 and the second baffle 22, positioned at the third baffle 23 and the fourth gear plate 24 Between the 3rd cavity 30, the 4th cavity 40 positioned at the side of the first baffle 21 and another positioned at the fourth gear plate 24 5th cavity 50 of side.In this utility model embodiment illustrated, the first baffle 21 is communicated with second chamber Some first circular holes 211 of body 20 and the 4th cavity 40；The second baffle 22 be communicated with first cavity 10 with Some second circular holes 221 of second cavity 20；The third baffle 23 is communicated with the 3rd cavity 30 with described Some 3rd circular holes 231 of one cavity 10；The fourth gear plate 24 is not provided with connection the 3rd cavity 30 and the 5th chamber The hole of body 50.

The acoustic filter 100 is provided with the gripper shoe 5 being welded between the second baffle 22 and the third baffle 23, institute State gripper shoe 5 and be provided with some perforation 51 connected with first cavity 10.The air inlet pipe 3 passes through the gripper shoe 5 and frame It is located in the gripper shoe 5.The air inlet pipe 3 is located in first cavity 10 and the air inlet pipe 3 is provided with some first and opens Hole 31, first perforate 31 is located at the side of the gripper shoe 5.

In order to realize good acoustic efficiency, the acoustic filter 100 also includes the sleeve pipe 6 being socketed in the air inlet pipe 3 And the connecting tube 7 being connected with the air inlet pipe 3, wherein described sleeve pipe 6 is provided with some second perforates 61.The length of described sleeve pipe 6 Degree is less than the length of the air inlet pipe 3, and described sleeve pipe 6 is located at the side of the gripper shoe 5.First perforate 31 is described Length L1 being distributed in air inlet pipe 3 is equal to length L2 that second perforate 61 is distributed in described sleeve pipe 6.The air inlet pipe 3 some 3rd perforates 32 for being additionally provided with the opposite side positioned at the gripper shoe 5.

Caliber of the caliber of the connecting tube 7 less than the air inlet pipe 3.The connecting tube 7 passes through the third baffle 23 With the fourth gear plate 24 extending in the 5th cavity 50.The connecting tube 7 includes be connected with the air inlet pipe 3 One body 71, extend vertically from first body 71 and through the second pipe of the third baffle 23 and the fourth gear plate 24 Body 72, the 3rd body 73 that first body 71 is extended vertically and parallel to from second body 72 and from the described 3rd The 4th body 74 that body 73 extends towards the fourth gear plate 24.3rd body 73 is with second body 72 not same In one horizontal plane.In this utility model embodiment illustrated, the 3rd body 73 and the 4th body 74 are low In second body 72.

First escape pipe 41 passes through the first baffle 21 with the second baffle 22 to extend into first chamber In body 10, first escape pipe 41 is provided with the first rake 411 being tilted in first cavity 10, and described first inclines Portion 411 is near first body 71.

Second escape pipe 42 passes through the third baffle 23 with the fourth gear plate 24 to extend into first chamber In body 10, second escape pipe 42 is provided with the second rake 421 being tilted in first cavity 10, and described second inclines Portion 421 is also close to first body 71.Please join shown in Fig. 6, first escape pipe 41 is with second escape pipe 42 substantially The both sides of the air inlet pipe 3 are symmetrically disposed in, are arranged such, so that good acoustic efficiency can be reached.

In addition, above example is merely to illustrate this utility model and not limits the technical side described by this utility model Case, understanding of this description should be based on person of ordinary skill in the field, although this specification is with reference to above-mentioned Embodiment has been carried out detailed description to this utility model, but, it will be understood by those within the art that, affiliated skill The technical staff in art field still can modify or equivalent to this utility model, and all are new without departing from this practicality The technical scheme of the spirit and scope of type and its improvement, all should cover in right of the present utility model.

Claims (10)

1. a kind of acoustic filter, it includes housing, some baffle plates in the housing, the air inlet extended in the housing Pipe and the first escape pipe and the second escape pipe, wherein the housing includes upper shell and is welded on one with the upper shell The lower house for rising；Some baffle plates include spaced first baffle, second baffle, third baffle and fourth gear plate, The housing is included positioned at the first cavity between the second baffle and the third baffle, positioned at the first baffle and institute State the second cavity between second baffle, the 3rd cavity between the third baffle and the fourth gear plate, positioned at institute State the 4th cavity and the 5th cavity positioned at the fourth gear plate opposite side of first baffle side；It is characterized in that：It is described Air inlet pipe is located in first cavity and the air inlet pipe is provided with some first perforates；The acoustic filter also includes being socketed in institute The sleeve pipe in air inlet pipe is stated, wherein described sleeve pipe is provided with some second perforates；The acoustic filter is additionally provided with and connects with the air inlet pipe The connecting tube for connecing, the connecting tube passes through the third baffle with the fourth gear plate to extend in the 5th cavity；Institute Stating the first escape pipe passes through the first baffle with the second baffle to extend in first cavity, first outlet Pipe is provided with the first rake being tilted in first cavity, and second escape pipe is through the third baffle and described the To extend in first cavity, second escape pipe is provided with the second inclination being tilted in first cavity to four baffle plates Portion.

2. acoustic filter as claimed in claim 1, it is characterised in that：The acoustic filter is provided with and is welded on the second baffle and institute The gripper shoe between third baffle is stated, the gripper shoe is provided with some perforation connected with first cavity；Described first opens In the side of the gripper shoe, the air inlet pipe is additionally provided with some 3rd perforates of the opposite side positioned at the gripper shoe to hole position.

3. acoustic filter as claimed in claim 2, it is characterised in that：The length of described sleeve pipe is less than the length of the air inlet pipe, And described sleeve pipe is located at the side of the gripper shoe.

4. acoustic filter as claimed in claim 3, it is characterised in that：The length that first perforate is distributed in the air inlet pipe Degree is equal to the length that second perforate is distributed in described sleeve pipe.

5. acoustic filter as claimed in claim 4, it is characterised in that：Pipe of the caliber of the connecting tube less than the air inlet pipe Footpath.

6. acoustic filter as claimed in claim 5, it is characterised in that：The connecting tube includes first be connected with the air inlet pipe Body, extend vertically from first body and through the third baffle and the second body of the fourth gear plate, from described Second body extends vertically and parallel to the 3rd body of first body and from the 3rd body towards the described 4th The 4th body that baffle plate extends.

7. acoustic filter as claimed in claim 6, it is characterised in that：3rd body is with second body not in same water In plane.

8. acoustic filter as claimed in claim 7, it is characterised in that：3rd body and the 4th body are below institute State the second body.

9. acoustic filter as claimed in claim 8, it is characterised in that：First rake is close to second rake First body.

10. acoustic filter as claimed in claim 1, it is characterised in that：The first baffle be communicated with second cavity with Some first circular holes of the 4th cavity；If the second baffle is communicated with first cavity with second cavity Dry second circular hole；The third baffle is communicated with some 3rd circular holes of the 3rd cavity and first cavity；It is described Fourth gear plate is not provided with connecting the hole of the 3rd cavity and the 5th cavity.