CN202611803U - Muffler for exhausting of vehicles - Google Patents

Muffler for exhausting of vehicles Download PDF

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Publication number
CN202611803U
CN202611803U CN 201220207733 CN201220207733U CN202611803U CN 202611803 U CN202611803 U CN 202611803U CN 201220207733 CN201220207733 CN 201220207733 CN 201220207733 U CN201220207733 U CN 201220207733U CN 202611803 U CN202611803 U CN 202611803U
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CN
China
Prior art keywords
hole
insertion tube
expansion cavity
pipe
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220207733
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Chinese (zh)
Inventor
张建润
王园
孙蓓蓓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southeast University
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Southeast University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Southeast University filed Critical Southeast University
Priority to CN 201220207733 priority Critical patent/CN202611803U/en
Application granted granted Critical
Publication of CN202611803U publication Critical patent/CN202611803U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a muffler for exhausting of vehicles. The muffler comprises a gas inlet pipe, a perforated pipe, first quarter insert pipes, second quarter insert pipes, a half insert pipe, an exhaust pipe, a partition plate and a shell; an inner cavity of the shell is divided into a first expansion cavity and a second expansion cavity by the partition plate; the perforated pipe is positioned in the first expansion cavity and communicated with the gas inlet pipe; first through holes and second through holes are distributed on the wall surface of the perforated pipe, the diameter of each second through hole is 1.2 to 1.5 times of that of each first through hole, and the quantity of the first through holes is 3 to 5 times of that of the second through holes; the first quarter insert pipes and the second quarter insert pipes are fixed onto the partition plate, and the first quarter insert pipes are communicated with the second quarter insert pipes; and both the half insert pipe and the exhaust pipe are fixed onto an end surface of the shell and are communicated with each other. The muffler with the structure has a muffling effect, a flow field in the muffler can be improved, and turbulence noise and exhaust back pressure can be reduced.

Description

A kind of silencing apparatus that is used for vehicle exhaust
Technical field
The utility model relates to a kind of silencing apparatus, specifically, relates to a kind of silencing apparatus that is used for vehicle exhaust.
Background technique
The vehicle motor exhaust sound is the major component in its total noise of centrifuge, reduces exhaust sound and can obtain good complete machine noise reduction.Along with the noise standard to vehicle improves constantly, there is the silencing apparatus of good noise elimination effect very important to the vehicle noise reduction.For a long time, the silencing apparatus of installing on the vehicle adopts the perforated pipe structure to engine exhaust noise medium and low frequency noise, the widely-used perforated pipe of the silencing apparatus of installing on the vehicle at present, and the perforated pipe wall is provided with the perforation that pore size equates.The diameter of these perforation is more little, and the noise frequency that falls of can disappearing is low more.Can reduce noise though these through holes are set, it is still very big to produce turbulence noise and exhaust back pressure.
Summary of the invention
Technical problem:The utility model technical problem to be solved is: a kind of silencing apparatus that is used for vehicle exhaust is provided, and the silencing apparatus of this structure not only has the noise elimination effect, can also improve the flow field in the silencing apparatus, reduces turbulence noise and exhaust back pressure effect.
Technological scheme:For solving the problems of the technologies described above, the technological scheme that the utility model adopts is:
A kind of silencing apparatus that is used for vehicle exhaust comprises suction tude, perforated pipe, the one 1/4 insertion tube, the 2 1/4 insertion tube, 1/2 insertion tube, outlet pipe, dividing plate and housing; Dividing plate is fixed on the inwall of housing, and dividing plate is divided into first expansion cavity and second expansion cavity with the inner chamber of housing; Suction tude is positioned at the outside of first expansion cavity, and the end face of suction tude and housing is fixedly connected; Perforated pipe is positioned at first expansion cavity, and an end of perforated pipe and the end face of housing are fixedly connected, and the other end of perforated pipe is fixedly connected with dividing plate; Perforated pipe and suction tude communicate; Be distributed with first through hole and second through hole on the wall of perforated pipe, second through-hole diameter is 1.2 times to 1.5 times of first through-hole diameter, and first number of openings is 3 times to 5 times of second number of openings; Second through hole is positioned at a side of first through hole, perhaps is positioned at the both sides of first through hole simultaneously; The one 1/4 insertion tube is positioned at first expansion cavity, and the 2 1/4 insertion tube is positioned at second expansion cavity, and the one 1/4 insertion tube and the 2 1/4 insertion tube all are fixed on the dividing plate, and the one 1/4 insertion tube and the 2 1/4 insertion tube communicate; 1/2 insertion tube is positioned at second expansion cavity, and outlet pipe is positioned at the outside of housing, and 1/2 insertion tube and outlet pipe all are fixed on the end face of housing, and outlet pipe and 1/2 insertion tube communicate.
Beneficial effect:Compared with prior art, the silencing apparatus of the utility model has good noise elimination effect, and can improve the flow field in the silencing apparatus, reduces turbulence noise and exhaust back pressure.Perforated pipe in the silencing apparatus of the utility model is provided with first through hole and second through hole.Gas gets into first expansion cavity from perforated pipe through first through hole and second through hole.The aperture of first through hole is less than the aperture of second through hole, and first number of openings is 3 times to 5 times of second number of openings.Compare second through hole, the aperture of first through hole is little, quantity is many.First through hole can play has good noise elimination effect.Compare first through hole, the aperture of second through hole is big, quantity is few.Second through hole can play and improve the flow field effect, to reduce the effect of turbulence noise and exhaust back pressure.
Description of drawings
Fig. 1 is the axial sectional view of the utility model.
Fig. 2 is that A-A among Fig. 1 is to sectional view.
Have among the figure: suction tude 1, perforated pipe 2, first through hole 201, second through hole the 202, the 1 insertion tube the 3, the 2 1/4 insertion tube, 4,1/2 insertion tube 5, outlet pipe 6, dividing plate 7, housing 8, first expansion cavity 9, second expansion cavity 10.
Embodiment
Below in conjunction with accompanying drawing, the technological scheme of the utility model is carried out detailed explanation.
As depicted in figs. 1 and 2, the utility model is a kind of silencing apparatus that is used for vehicle exhaust, comprises suction tude 1, perforated pipe the 2, the 1 insertion tube the 3, the 2 1/4 insertion tube 4,1/2 insertion tube 5, outlet pipe 6, dividing plate 7 and housing 8.Dividing plate 7 is fixed on the inwall of housing 8, and dividing plate 7 is divided into first expansion cavity 9 and second expansion cavity 10 with the inner chamber of housing 8.Suction tude 1 is positioned at the outside of first expansion cavity 9, and the end face of suction tude 1 and housing 8 is fixedly connected.Perforated pipe 2 is positioned at first expansion cavity 9, and an end of perforated pipe 2 is fixedly connected with the end face of housing 8, and the other end of perforated pipe 2 is fixedly connected with dividing plate 7, and perforated pipe 2 communicates with suction tude 1.Be distributed with first through hole 201 and second through hole 202 on the wall of perforated pipe 2; Second through hole, 202 diameters are 1.2 times to 1.5 times of first through hole, 201 diameters; And first through hole, 201 quantity are 3 to 5 times of second through hole, 202 quantity; Second through hole 202 is positioned at a side of first through hole 201, perhaps is positioned at the both sides of first through hole 201 simultaneously.That is to say that second through hole 202 and first through hole 201 can not hybrid cross be arranged.The second all through holes 202 are arranged together, and the first all through holes 201 are arranged together, and second through hole 202 is positioned at a side of first through hole 201, perhaps are positioned at the both sides of first through hole 201 simultaneously.The one 1/4 insertion tube 3 is positioned at that first expansion cavity, 9, the 2 1/4 insertion tubes 4 are positioned at second expansion cavity, 10, the one 1/4 insertion tubes 3 and the 2 1/4 insertion tube 4 all is fixed on the dividing plate 7, and the one 1/4 insertion tube 3 and the 2 1/4 insertion tube 4 communicate.The length of the one 1/4 insertion tube 3 is 1/4 of first expansion cavity, 9 length.The length of the 2 1/4 insertion tube 4 is 1/4 of second expansion cavity, 10 length.1/2 insertion tube 5 is positioned at second expansion cavity 10, and outlet pipe 6 is positioned at the outside of second expansion cavity 10, and 1/2 insertion tube 5 all is fixed on the end face of housing 8 with outlet pipe 6, and outlet pipe 6 and 1/2 insertion tube 5 communicate.The length of 1/2 insertion tube 5 is 1/2 of second expansion cavity, 10 length.
Further, be to improve the noise elimination effect, described the one 1/4 insertion tube 3 and the 2 1/4 insertion tube 4 are respectively four, and are symmetry axis with the axis of housing 8, evenly distribution.
Adopt the silencing apparatus of this structure; The high velocity air of being discharged by vehicle motor passes through suction tude 1; Air communication is crossed first through hole 201 and second through hole 202 on the perforated pipe 2, gets into first expansion cavity 9, and gas is through the one 1/4 insertion tube 3 and the 2 1/4 insertion tube 4 then; Get into second expansion cavity 10, discharge high velocity air by outlet pipe 6 through 1/2 insertion tube 5 at last.Air-flow is through first through hole 201 on the perforated pipe 2 time, and the quantity of first through hole 201 is more, and the aperture is less, and first through hole 201 mainly plays the noise elimination effect.Air-flow through second through hole 202 on the perforated pipe 2 time, the negligible amounts of second through hole 202, the aperture is bigger, second through hole 202 mainly works to improve air-flow, reduces because the turbulence noise of high velocity air generation during through first through hole 201.The structure constant with respect to traditional through-hole aperture, the silencing apparatus of the utility model also has the air-flow of improvement, reduces turbulence noise and exhaust back pressure effect.

Claims (2)

1. silencing apparatus that is used for vehicle exhaust; It is characterized in that, comprise suction tude (1), perforated pipe (2), the one 1/4 insertion tube (3), the 2 1/4 insertion tube (4), 1/2 insertion tube (5), outlet pipe (6), dividing plate (7) and housing (8); Dividing plate (7) is fixed on the inwall of housing (8), and dividing plate (7) is divided into first expansion cavity (9) and second expansion cavity (10) with the inner chamber of housing (8); Suction tude (1) is positioned at the outside of first expansion cavity (9), and the end face of suction tude (1) and housing (8) is fixedly connected; Perforated pipe (2) is positioned at first expansion cavity (9); One end of perforated pipe (2) is fixedly connected with the end face of housing (8); The other end of perforated pipe (2) is fixedly connected with dividing plate (7), and perforated pipe (2) and suction tude (1) communicate, and is distributed with first through hole (201) and second through hole (202) on the wall of perforated pipe (2); Second through hole (202) diameter is 1.2 times to 1.5 times of first through hole (201) diameter; And first through hole (201) quantity is 3 times to 5 times of second through hole (202) quantity, and second through hole (202) is positioned at a side of first through hole (201), perhaps is positioned at the both sides of first through hole (201) simultaneously; The one 1/4 insertion tube (3) is positioned at first expansion cavity (9); The 2 1/4 insertion tube (4) is positioned at second expansion cavity (10); The one 1/4 insertion tube (3) and the 2 1/4 insertion tube (4) all are fixed on the dividing plate (7), and the one 1/4 insertion tube (3) and the 2 1/4 insertion tube (4) communicate; 1/2 insertion tube (5) is positioned at second expansion cavity (10), and outlet pipe (6) is positioned at the outside of housing (8), and 1/2 insertion tube (5) and outlet pipe (6) all are fixed on the end face of housing (8), and outlet pipe (6) and 1/2 insertion tube (5) communicate.
2. according to the described silencing apparatus that is used for vehicle exhaust of claim 1, it is characterized in that described the one 1/4 insertion tube (3) and the 2 1/4 insertion tube (4) are respectively four, and be symmetry axis, evenly distribute with the axis of housing (8).
CN 201220207733 2012-05-10 2012-05-10 Muffler for exhausting of vehicles Expired - Fee Related CN202611803U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220207733 CN202611803U (en) 2012-05-10 2012-05-10 Muffler for exhausting of vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220207733 CN202611803U (en) 2012-05-10 2012-05-10 Muffler for exhausting of vehicles

Publications (1)

Publication Number Publication Date
CN202611803U true CN202611803U (en) 2012-12-19

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Application Number Title Priority Date Filing Date
CN 201220207733 Expired - Fee Related CN202611803U (en) 2012-05-10 2012-05-10 Muffler for exhausting of vehicles

Country Status (1)

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CN (1) CN202611803U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108005756A (en) * 2017-12-31 2018-05-08 重庆固发机械制造有限责任公司 A kind of muffler ASSY
CN113417714A (en) * 2021-06-21 2021-09-21 中国舰船研究设计中心 Exhaust silencing and cooling integrated device for ship-shell common diesel engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108005756A (en) * 2017-12-31 2018-05-08 重庆固发机械制造有限责任公司 A kind of muffler ASSY
CN113417714A (en) * 2021-06-21 2021-09-21 中国舰船研究设计中心 Exhaust silencing and cooling integrated device for ship-shell common diesel engine

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121219

Termination date: 20140510