CN2299155Y - Division impedance decompression silencer - Google Patents
Division impedance decompression silencer Download PDFInfo
- Publication number
- CN2299155Y CN2299155Y CN 96224869 CN96224869U CN2299155Y CN 2299155 Y CN2299155 Y CN 2299155Y CN 96224869 CN96224869 CN 96224869 CN 96224869 U CN96224869 U CN 96224869U CN 2299155 Y CN2299155 Y CN 2299155Y
- Authority
- CN
- China
- Prior art keywords
- cylindrical shell
- aperture
- damping
- pipe
- dividing plate
- 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
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- Exhaust Silencers (AREA)
Abstract
The utility model provides a division impedance decompression silencer, comprising a cylinder body with a tail pipe. The inner of one port of the cylinder body is provided with a small hole pipe, the inner of the cylinder body is provided with a piece of partition board, and the small hole pipe passes through a central hole on the partition board. One end in the cylinder body near the tail pipe is provided with four damping plates, a decompression expansion chamber is formed between two damping plates, and the four damping plates form three decompression expansion chambers. The damping plates are composed of a damping tube partition board having the same diameter with the inner diameter of the cylinder body and a damping tube arranged on the damping tube partition board.
Description
The utility model relates to a kind of automotive muffler.
The blast wave pressure of automobile engine to exhaust noise and its production is big public hazards of urban environment, the serious harm health.The blast wave pressure that reduces automobile engine to exhaust noise and its generation is that people want the problem that solves always.Existing silencing apparatus generally adopts expansion chamber and resonant chamber to form, and generally about 40-60mm, the inner connecting tube bore is too big in the inner connecting tube aperture of its formation expansion chamber, is difficult to reach reduce the blast wave pressure, reduces anti noise.
The purpose of this utility model provides a kind of reduction blast wave pressure, reduces the flow deviding type impedance step-down silencing apparatus of noise.
Technical solution of the present utility model is such: flow deviding type impedance step-down silencing apparatus comprises a cylindrical shell that has tail pipe, be provided with an aperture pipe in the port of body, be provided with a dividing plate in the cylindrical shell, the aperture pipe passes the center hole on the dividing plate, has been covered with aperture on the port of cylindrical shell and the aperture pipe between the dividing plate.That end by tail pipe in cylindrical shell is provided with four damping plates, and four damping plate intervals each other are not less than 100mm, forms a decompressional expansion chamber between two damping plates, and four damping plates form three decompressional expansion chambers.
The flow deviding type impedance step-down silencing apparatus that uses the utility model to provide on automobile, after noise, the blast of engine exhaust generation entered silencing apparatus, through shunting in a large number, repeatedly damping was interfered mutually, has reached good step-down and noise elimination effect.And it is little to have exhaust resistance damage, economic fuel-economizing, effects such as cleaning of off-gas.
Description of drawings:
Accompanying drawing 1 is a flow deviding type impedance step-down acoustic wave filter structure schematic representation;
Accompanying drawing 2 is the A-A sectional view in the accompanying drawing 1;
Accompanying drawing 3 is the B-B sectional view in the accompanying drawing 1.
Now in conjunction with the accompanying drawings the utility model is made detailed description:
The flow deviding type impedance step-down silencing apparatus that the utility model provides comprises a cylindrical shell 2 that has tail pipe 5, and the length ratio of the diameter of cylindrical shell 2 and cylindrical shell 2 is 1: 3-4, the internal diameter of tail pipe 5 is 1 with the ratio of the internal diameter of cylindrical shell 2: 3-4.Be provided with an aperture pipe 1 in the port of cylindrical shell 2, be provided with a dividing plate 3 in cylindrical shell 2, aperture pipe 1 passes the center hole on the dividing plate 3, has been covered with aperture on the port of cylindrical shell 2 and the aperture pipe 1 between the dividing plate 3.The length ratio of the length of aperture pipe 1 and cylindrical shell 2 is 1: 2-3, the internal diameter of aperture pipe is 1 with the ratio of the internal diameter of cylindrical shell 2: 2-3.The interval that is provided with between 4, four damping plates 4 of four damping plates by that end of tail pipe 5 in cylindrical shell 2 is not less than 100mm, forms 8, four damping plates 4 in a decompressional expansion chamber between two damping plates 4 and has formed three decompressional expansion chambers 8.Damping plate 4 is made up of the same big damp tube dividing plate 6 with cylindrical shell 2 internal diameters of a diameter and the damp tube 7 that is installed on the damp tube dividing plate 6, and damp tube 7 is distributed on damping every pulling on 6, is inserted in the mounting hole on the damp tube dividing plate 6.The length of damp tube 7 is not less than 60mm, and the aperture of damp tube 7 is 4-6mm, and the aperture sum of the damp tube 7 on every damping tube sheet 4 should equal the aperture of exhaust valve seat for automobile engine.
Claims (3)
1, a kind of flow deviding type impedance step-down silencing apparatus, it is characterized in that the cylindrical shell (2) that has one to have tail pipe (5), be provided with an aperture pipe (1) in the port of cylindrical shell (2), be provided with dividing plate (3) in the cylindrical shell (2), aperture pipe (1) passes the center hole on the dividing plate (3), on the port of cylindrical shell (2) and the aperture pipe (1) between the dividing plate (3), be covered with aperture, that end by tail pipe (5) in cylindrical shell (2) is provided with four damping plates (4), four damping plates (4) interval each other is not less than 100mm, form a decompressional expansion chamber (8) between two damping plates (4), four damping plates (4) have formed three decompressional expansion chambers (8).
2, flow deviding type impedance step-down silencing apparatus as claimed in claim 1, it is characterized in that damping plate (4) is made up of the same big damp tube dividing plate (6) with cylindrical shell (2) internal diameter of a diameter and the damp tube (7) that is installed on the damp tube dividing plate (6), the length of damp tube (7) is not less than 60mm, and the aperture of damp tube (7) is 4-6mm.The aperture sum of the damp tube (7) on the every damping plate (4) should equal the aperture of exhaust valve seat for automobile engine.
3, flow deviding type impedance step-down silencing apparatus as claimed in claim 1 or 2 is characterized in that the diameter of cylindrical shell (2) and the length ratio of cylindrical shell (2) are 1: 3-4; The length of aperture pipe (1) and cylindrical shell (2) length ratio are 1: 2-3, and the ratio of the internal diameter of the internal diameter of aperture pipe (1) and cylindrical shell (2) is 1: 2-3; The ratio of the internal diameter of the internal diameter of tail pipe (5) and cylindrical shell (2) is 1: 3-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96224869 CN2299155Y (en) | 1996-10-30 | 1996-10-30 | Division impedance decompression silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96224869 CN2299155Y (en) | 1996-10-30 | 1996-10-30 | Division impedance decompression silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2299155Y true CN2299155Y (en) | 1998-12-02 |
Family
ID=33903703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96224869 Expired - Fee Related CN2299155Y (en) | 1996-10-30 | 1996-10-30 | Division impedance decompression silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2299155Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016853B (en) * | 2006-02-07 | 2010-05-19 | Lg电子株式会社 | Silencer |
| CN102278183A (en) * | 2011-07-19 | 2011-12-14 | 南京航空航天大学 | Diesel engine exhaust silencer of composite structure |
| TWI392838B (en) * | 2010-06-10 | 2013-04-11 | Univ Nat Taiwan Normal | Whistle box structure |
| EP1507071B1 (en) | 2003-08-11 | 2016-07-13 | EMCON Technologies Germany (Augsburg) GmbH | Exhaust silencer |
-
1996
- 1996-10-30 CN CN 96224869 patent/CN2299155Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1507071B1 (en) | 2003-08-11 | 2016-07-13 | EMCON Technologies Germany (Augsburg) GmbH | Exhaust silencer |
| CN101016853B (en) * | 2006-02-07 | 2010-05-19 | Lg电子株式会社 | Silencer |
| TWI392838B (en) * | 2010-06-10 | 2013-04-11 | Univ Nat Taiwan Normal | Whistle box structure |
| CN102278183A (en) * | 2011-07-19 | 2011-12-14 | 南京航空航天大学 | Diesel engine exhaust silencer of composite structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |