CN110939497B - Full water cooling composite exhaust muffler for diesel engine - Google Patents
Full water cooling composite exhaust muffler for diesel engine Download PDFInfo
- Publication number
- CN110939497B CN110939497B CN201911409368.2A CN201911409368A CN110939497B CN 110939497 B CN110939497 B CN 110939497B CN 201911409368 A CN201911409368 A CN 201911409368A CN 110939497 B CN110939497 B CN 110939497B
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- China
- Prior art keywords
- muffler
- cavity
- silencer
- chamber
- silence
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/082—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases passing through porous members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/083—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using transversal baffles defining a tortuous path for the gases or successively throttling gas flow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
- F01N1/10—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling in combination with sound-absorbing materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
- F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a full water-cooling composite exhaust muffler for a diesel engine, wherein a cooling liquid channel is formed between an inner muffler shell and an outer muffler shell, a vertical baffle is arranged in an inner muffler cavity, the inner muffler cavity is divided into a front muffler cavity and a rear muffler cavity, a horizontal baffle is arranged at the middle upper part of the front muffler cavity, the front muffler cavity is divided into a first sound-absorbing cavity and a second sound-absorbing cavity, a first sound-absorbing blocking pipe and a second sound-absorbing blocking pipe are arranged in the second sound-absorbing cavity, a third sound-absorbing blocking pipe and a fourth sound-absorbing blocking pipe are arranged in the rear muffler cavity, the upper end of the first sound-absorbing blocking pipe stretches into the first sound-absorbing cavity, a first baffle is arranged in the second sound-absorbing cavity, a second baffle is arranged in the rear muffler cavity, gas flows in an S-shaped route in the corresponding cavity, the second sound-absorbing blocking pipe is communicated with the third sound-absorbing blocking pipe through a horizontal connecting pipe, and sound-absorbing cotton is arranged on the inner wall of the rear muffler cavity. Can carry out the noise reduction and heat insulation to the greatest extent, and compact and reasonable in structure and small in occupied space.
Description
Technical Field
The invention relates to the technical field of diesel generators, in particular to a full water-cooling composite exhaust muffler for a diesel generator, which is used for carrying out water-cooling on the exhaust muffler of an engine.
Background
The existing water-cooling composite muffler is divided into a front cavity and a rear cavity, cooling liquid is filled between the inner cavity and the outer cavity of the front cavity, and the rear cavity is filled with silencing cotton for silencing and heat insulation. When the generator set works under the high temperature condition, the exhaust high temperature gas of the engine can radiate into the mute box through the rear cavity, so that the temperature in the mute box of the generator set is overhigh, and the aging of rubber parts and the power reduction of the generator set can be caused when the generator set works for a long time.
Disclosure of Invention
The invention aims to provide a full water-cooling combined exhaust muffler of a diesel engine, which is used for carrying out better water-cooling on the exhaust muffler of the engine, and has lower heat radiated to a mute box by the muffler and lower noise.
The technical scheme adopted by the invention is as follows: a full water cooling composite exhaust muffler for diesel engine is composed of inner and outer muffler shells, cooling liquid channel between said inner and outer muffler shells, vertical partition plate in said inner muffler cavity, front and rear muffler cavities, horizontal partition plate in the middle-upper part of front muffler cavity, air inlet pipe on left side wall of said first and second muffler cavities, exhaust pipe on right side wall of said rear muffler cavity, first and second muffler blocks tubes on left end of said second muffler cavity, third and fourth muffler blocks tubes on right end of rear muffler cavity, and cotton-shaped muffler cavity.
As the optimization of the scheme, the adjacent first partition plates are alternately arranged front to back to form an S-shaped air flow path, the second partition plates are alternately arranged front to back to form an S-shaped air flow path, each pair of second partition plates consists of an n-shaped or u-shaped bending plate, the top of the n-shaped or u-shaped bending plate is fixed at the top of the rear cavity of the muffler, or the bottom of the u-shaped bending plate is fixed at the bottom of the rear cavity of the muffler, and air holes are formed in the n-shaped or u-shaped bending plate; the distance L1 between the suspended end of the second partition plate and the rear cavity of the muffler is smaller than the distance L2 between the first partition plate and the second sound-absorbing cavity. The first partition board is not provided with holes, gas flows forwards through narrow slits formed by the partition board and the cavity, and the gas flow path is prolonged; most air current flows forward through the narrow slit that baffle and cavity formed on the second baffle, the extension air current route adopts less narrow slit structure, can ensure that gas can fully contact with the amortization cotton on the cavity inner wall, improve the noise cancellation effect, and the less gas that flows then flows forward through the trompil on the second baffle, the aperture flows then can improve the noise reduction effect, therefore first baffle, the dual effect of amortization and noise reduction has been taken into consideration to the second baffle, gas after first, the second sound attenuation chamber, the temperature reduces to some extent, combine the amortization cotton and the structure of foraminiferous second baffle, noise reduction effect is more restricted.
Still preferably, a support plate is disposed between the inner muffler shell and the outer muffler shell, the main body of the support plate is welded on the inner muffler shell, and after the left and right ends of the support plate are bent vertically towards the direction of the outer muffler shell, the support plate is welded on the outer muffler shell through outward flanging, so that the whole support plate is in a pi shape, and the installation structure between the inner muffler shell and the outer muffler shell is simplified.
Further preferably, the support plate is further provided with a weight reducing hole for reducing weight.
Further preferably, the left and right outer sides of the muffler housing are provided with "L-shaped mounting seats", respectively.
Further preferably, the vertical partition plate is arranged in the middle in the front and the rear, the inner cavity of the silencer is equally divided into a front cavity of the silencer and a rear cavity of the silencer, the sizes of the front cavity and the rear cavity are balanced, and through test verification, the silencing effect is better than that of a large structure and a small structure.
The invention has the beneficial effects that: a cooling liquid channel is formed between the inner shell and the outer shell of the silencer, the inner cavity of the whole silencer is wrapped by cooling liquid to form a full water-cooling structure, and three silencing cavities, four silencing and blocking pipes, a horizontal connecting pipe, a plurality of first partition boards, a plurality of second partition boards and silencing cotton in the silencer are combined to perform silencing and heat insulation to the front cavity and the rear cavity of the silencer to the greatest extent, so that the heat radiated to the silencing box by the silencer is the lowest, and the noise is the smallest; meanwhile, the internal structure of the muffler is optimized, so that the circulation route of gas in the muffler is longest, the structure is compact and reasonable, and the occupied space is small.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a sectional view of B-B of fig. 1.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
referring to fig. 1-3, a full water-cooling composite exhaust muffler for a diesel engine has a double-layer structure, and is divided into a muffler inner shell and a muffler outer shell. A cooling liquid channel 1 is formed between the inner shell and the outer shell of the muffler, so that the cooling liquid can wrap the inner cavity of the whole muffler inside to form the full water-cooling muffler.
A vertical partition plate is arranged in the inner cavity of the muffler to divide the inner cavity of the muffler into a front muffler cavity and a rear muffler cavity, a horizontal partition plate is arranged at the middle upper part of the front muffler cavity to divide the front muffler cavity into a first silencing cavity and a second silencing cavity. Therefore, the inner cavity of the muffler is divided into a first sound-eliminating cavity and a second sound-eliminating cavity, and the rear cavity of the muffler is a third sound-eliminating cavity, and the three cavities are all formed. Preferably, the vertical partition plates are arranged in the middle in the front-rear direction, and the inner cavity of the muffler is equally divided into a front muffler cavity and a rear muffler cavity.
An air inlet pipe 2 is arranged on the left side wall of the first silencing cavity, and an exhaust pipe 3 is arranged on the right side wall of the rear cavity of the silencer near the bottom.
The right end of the second silencing cavity is provided with a first silencing blocking pipe 4, and the left end of the second silencing cavity is provided with a second silencing blocking pipe 5. A third silencing blocking pipe 6 is arranged at the left end of the rear cavity of the silencer, and a fourth silencing blocking pipe 7 is arranged at the right end of the rear cavity of the silencer. The second muffling baffle 5 is communicated with the third muffling baffle 6 through a horizontal connecting pipe 10. The side walls of the first silencing blocking pipe 4, the second silencing blocking pipe 5, the third silencing blocking pipe 6 and the fourth silencing blocking pipe 7 are respectively provided with air holes for air inlet or air outlet.
The upper ends of the other silencing and blocking pipes are connected and sealed with the inner cavities of the corresponding silencing cavities except that the upper ends of the first silencing and blocking pipes 4 extend into the inner cavities of the first silencing cavities.
The first baffle plate 8 is arranged in the second silencing cavity, the second baffle plate 9 is arranged in the rear cavity of the silencer, so that gas flows in an S-shaped route in the corresponding cavity, and silencing cotton 11 is arranged on the inner wall of the rear cavity of the silencer.
Preferably, the adjacent first partition plates 8 are arranged alternately in front of and behind each other to form an S-shaped airflow path, and the second partition plates 9 are arranged alternately in pairs in front of and behind each other to form an S-shaped airflow path. Each pair of second partition boards 9 is formed by n-shaped or u-shaped bending boards; if an n-shaped bending plate is adopted, the top of the n-shaped bending plate is fixed at the top of the rear cavity of the muffler; or a U-shaped bending plate is adopted, and the bottom of the U-shaped bending plate is fixed at the bottom of the rear cavity of the muffler. The n-shaped or u-shaped bending plate is also provided with air holes.
In addition, the distance L1 between the suspended end of the second baffle 9 and the rear muffler chamber is smaller than the distance L2 between the first baffle 8 and the second muffler chamber, so that the width of the narrow slit position in the rear muffler chamber is smaller than the width of the narrow slit position in the second muffler chamber.
In order to simplify the installation, reduce the overall weight and ensure the reliable supporting strength, a supporting plate 12 is arranged between the inner silencer shell and the outer silencer shell, the main body part of the supporting plate 12 is welded on the inner silencer shell, and after the left and right ends of the supporting plate 12 are vertically bent towards the outer silencer shell, the supporting plate 12 is welded on the outer silencer shell through outward flanging, so that the whole supporting plate 12 is in a pi shape. The support plate 12 is also provided with a lightening hole 12a.
The left and right outer sides of the muffler shell are respectively provided with an L-shaped mounting seat 13 for mounting the muffler in a diesel engine silencing box.
The direction of the air flow in the muffler is shown by an arrow in the figure, the air enters the first muffler cavity through the air inlet pipe 2, then enters the second muffler cavity through the first muffler blocking pipe 4, enters the second muffler blocking pipe 5 under the flow guiding action of a plurality of first partition boards 8, then enters the rear muffler cavity through the horizontal connecting pipe 10 and the third muffler blocking pipe 6, and is discharged through the fourth muffler blocking pipe 7 and the exhaust pipe 3 under the flow guiding action of a plurality of second partition boards 9.
Claims (6)
1. The utility model provides a full water-cooling combined type exhaust muffler of diesel engine which characterized in that: divide into silencer inner shell and silencer shell, form coolant liquid passageway (1) between silencer inner shell and silencer shell, be provided with vertical baffle in the silencer inner chamber, divide into silencer front chamber and silencer back chamber with the silencer inner chamber, well upper portion in silencer front chamber is provided with horizontal baffle, divide into first silence chamber and second silence chamber with the silencer front chamber, be provided with intake pipe (2) on the left side wall of first silence chamber, right side wall in silencer back chamber leans on bottom position department to be provided with blast pipe (3), the right-hand member in second silence chamber is provided with first silence and blocks pipe (4), is provided with second silence and blocks pipe (5) in the left end in second silence chamber, is provided with third silence and blocks pipe (6) in the left end in silencer back chamber, and the right-hand member in silencer back chamber is provided with fourth silence and blocks pipe (7), and the upper end of first silence pipe stretches into first silence chamber, and the lower end of the other silence pipe blocks down and corresponds and blocks the pipe and be provided with the pipe line (9) and flow in the second silence chamber (9) through the second baffle, the second silence chamber is provided with the connection pipe (9) in the back chamber.
2. The fully water cooled composite exhaust muffler of a diesel engine as defined in claim 1, wherein: the adjacent first partition plates (8) are alternately arranged front to back to form an S-shaped airflow path, the second partition plates (9) are alternately arranged front to back in pairs to form an S-shaped airflow path, each pair of second partition plates (9) is formed by an n-shaped or u-shaped bending plate, the top of the n-shaped is fixed on the rear side of the rear cavity of the muffler, or the bottom of the u-shaped is fixed on the front side of the rear cavity of the muffler, and air holes are formed in the n-shaped or u-shaped bending plates; the distance L1 between the suspended end of the second partition plate (9) and the rear cavity of the muffler is smaller than the distance L2 between the suspended end of the first partition plate (8) and the second silencing cavity.
3. The full water-cooled composite exhaust muffler for a diesel engine according to claim 1 or 2, wherein: a supporting plate (12) is arranged between the inner silencer shell and the outer silencer shell, the main body part of the supporting plate (12) is welded on the inner silencer shell, and after the left end and the right end of the supporting plate (12) are vertically bent towards the direction of the outer silencer shell, the supporting plate is welded on the outer silencer shell through an outward flanging, so that the supporting plate (12) is in a pi shape as a whole.
4. A full water cooled composite exhaust muffler for a diesel engine as defined in claim 3, wherein: the bearing plate (12) is also provided with a lightening hole.
5. The full water-cooled composite exhaust muffler for a diesel engine according to claim 1 or 2, wherein: the left and right outer sides of the silencer shell are respectively provided with an L-shaped mounting seat (13).
6. A full water cooled composite exhaust muffler for a diesel engine as defined in claim 3, wherein: the vertical partition plates are arranged in the middle in the front-back direction and divide the inner cavity of the muffler into a muffler front cavity and a muffler rear cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911409368.2A CN110939497B (en) | 2019-12-31 | 2019-12-31 | Full water cooling composite exhaust muffler for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911409368.2A CN110939497B (en) | 2019-12-31 | 2019-12-31 | Full water cooling composite exhaust muffler for diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110939497A CN110939497A (en) | 2020-03-31 |
| CN110939497B true CN110939497B (en) | 2023-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911409368.2A Active CN110939497B (en) | 2019-12-31 | 2019-12-31 | Full water cooling composite exhaust muffler for diesel engine |
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| Country | Link |
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| CN (1) | CN110939497B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201747435U (en) * | 2010-07-19 | 2011-02-16 | 中国人民解放军重庆通信学院 | Muffler of resistance compound type water cooling type diesel engine generator set |
| CN204476537U (en) * | 2014-12-18 | 2015-07-15 | 重庆博沃发动机配件制造有限公司 | Water-cooled silencing apparatus |
| CN105422217A (en) * | 2015-12-11 | 2016-03-23 | 重庆秋航机械有限责任公司 | Muffler structure for motorcycle |
| CN208831072U (en) * | 2018-09-21 | 2019-05-07 | 湖北迪耐斯通达排放处理系统有限公司 | A kind of commercial vehicle tail-gas after treatment apparatus |
| US10308339B1 (en) * | 2015-12-17 | 2019-06-04 | Woodrow Woods | Marine muffler with integral bypass water management |
| CN211202083U (en) * | 2019-12-31 | 2020-08-07 | 重庆鼎工机电有限公司 | Full water-cooling combined exhaust silencer of diesel engine |
-
2019
- 2019-12-31 CN CN201911409368.2A patent/CN110939497B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201747435U (en) * | 2010-07-19 | 2011-02-16 | 中国人民解放军重庆通信学院 | Muffler of resistance compound type water cooling type diesel engine generator set |
| CN204476537U (en) * | 2014-12-18 | 2015-07-15 | 重庆博沃发动机配件制造有限公司 | Water-cooled silencing apparatus |
| CN105422217A (en) * | 2015-12-11 | 2016-03-23 | 重庆秋航机械有限责任公司 | Muffler structure for motorcycle |
| US10308339B1 (en) * | 2015-12-17 | 2019-06-04 | Woodrow Woods | Marine muffler with integral bypass water management |
| CN208831072U (en) * | 2018-09-21 | 2019-05-07 | 湖北迪耐斯通达排放处理系统有限公司 | A kind of commercial vehicle tail-gas after treatment apparatus |
| CN211202083U (en) * | 2019-12-31 | 2020-08-07 | 重庆鼎工机电有限公司 | Full water-cooling combined exhaust silencer of diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110939497A (en) | 2020-03-31 |
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