JPS5685516A - Noise reducing device for suction and exhaust pipe - Google Patents
Noise reducing device for suction and exhaust pipeInfo
- Publication number
- JPS5685516A JPS5685516A JP16243679A JP16243679A JPS5685516A JP S5685516 A JPS5685516 A JP S5685516A JP 16243679 A JP16243679 A JP 16243679A JP 16243679 A JP16243679 A JP 16243679A JP S5685516 A JPS5685516 A JP S5685516A
- Authority
- JP
- Japan
- Prior art keywords
- flow
- gas
- passage
- exhaust
- exhaust pipe
- 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.)
- Pending
Links
Landscapes
- Exhaust Silencers (AREA)
Abstract
PURPOSE: To lower the level of the suction and exhaust noise by forming the end of suction and exhaust pipes by using a concentrically double tube so that the interaction between the straight gas flow from the inner tube and the spiral gas flow from the outer tube prevents the generation of a turbulent flow.
CONSTITUTION: An end 1a of an exhaust pipe 1 is formed by using a double tube 5 which is a concerntrically fitted combination of a cylindrical inner tube 3 and outer tube 4. The gas passage in the inner tube 3 is formed into a straight passage 6 parallel to the axis, while the gas passage in the outer tube 4 is formed into a spiral passage 8. The exhuast gas having passed through a silencer 2 is divided into two at the end 1a to flow through the inner tube 3 and the outer tube 4 respectively, and then discharged from the exhaust pipe 1. On doing this, the exhaust gas flowing out of the straight passage 6 forms a straight flow which is liable to generate a turbulent flow. However, the exhaust gas flowing out of the spiral passage 8 forms a spiral flow which has a strong rectilinearity and never generates a turbulent flow. Therefore, the interaction between both gas flows prevents the exhaust gas flowing out of the exhaust pipe 1 from generating a turbulent flow.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16243679A JPS5685516A (en) | 1979-12-13 | 1979-12-13 | Noise reducing device for suction and exhaust pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16243679A JPS5685516A (en) | 1979-12-13 | 1979-12-13 | Noise reducing device for suction and exhaust pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5685516A true JPS5685516A (en) | 1981-07-11 |
Family
ID=15754569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16243679A Pending JPS5685516A (en) | 1979-12-13 | 1979-12-13 | Noise reducing device for suction and exhaust pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5685516A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007071202A (en) * | 2005-09-02 | 2007-03-22 | Emitec Ges Fuer Emissionstechnologie Mbh | Method and apparatus for adding reactant to exhaust gas from internal combustion engine |
| JP2012117518A (en) * | 2010-11-11 | 2012-06-21 | Nitto Electric Works Ltd | Silencing apparatus for cabinet |
-
1979
- 1979-12-13 JP JP16243679A patent/JPS5685516A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007071202A (en) * | 2005-09-02 | 2007-03-22 | Emitec Ges Fuer Emissionstechnologie Mbh | Method and apparatus for adding reactant to exhaust gas from internal combustion engine |
| EP1760284A3 (en) * | 2005-09-02 | 2008-07-30 | Emitec Gesellschaft für Emissionstechnologie mbH | Method and device for adding reactants to an exhaust gas of an internal combustion engine |
| US7533522B2 (en) | 2005-09-02 | 2009-05-19 | Emitec Gesellschaft Fuer Emissionstechnologie Mbh | Method and apparatus for adding a reactant to an exhaust gas from an internal combustion engine |
| JP2012117518A (en) * | 2010-11-11 | 2012-06-21 | Nitto Electric Works Ltd | Silencing apparatus for cabinet |
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