CN2503208Y - Air inlet silencing apapratus - Google Patents
Air inlet silencing apapratus Download PDFInfo
- Publication number
- CN2503208Y CN2503208Y CN 01252000 CN01252000U CN2503208Y CN 2503208 Y CN2503208 Y CN 2503208Y CN 01252000 CN01252000 CN 01252000 CN 01252000 U CN01252000 U CN 01252000U CN 2503208 Y CN2503208 Y CN 2503208Y
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- CN
- China
- Prior art keywords
- air
- chamber
- inner core
- cylindrical shell
- inlet
- 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 belongs to the field of combustion engines and relates in particular to an incoming air muffler for a diesel engine. A body is a sealed cylinder, the lower side of which has an air inlet and an air outlet; an air filter element is arranged at the air inlet. The utility model is characterized in that the cylinder is divided into an inlet air chamber and an outlet air chamber; a labyrinth air passage is arrange din the inlet air chamber; a septal plate between the two chambers is provided with an air orifice to communicate the air chambers; an inner core pipe is arranged at the air outlet; an outer pipe cap is positioned inversely at the entrance of the inner core pipe. The incoming air muffler with the structure forms an effective noise absorbing chamber and an air-pressure stabilizing chamber between the filter element and the labyrinth air passage, and the clearance formed between the inner core pipe and the outer pipe cap acts for preventing air recirculation and reduces air counter-flow noise caused by intermittent air intakes. The utility model has rational design and can effectively improve air noise produced by intermittent air intakes.
Description
Technical field:
The utility model belongs to field of internal combustion engine, particularly a kind of diesel engine intake silencing apparatus.
Background technique:
The invention of internal-combustion engine brings great convenience for production and life, and power source is provided, and is widely used in fields such as communications and transportation, generating, water conservancy irrigation.Internal-combustion engine can be divided into two big classes, also is gasoline engine and diesel engine, and gasoline engine development is fast, excellent performance, but its manufacture process requirement height, operating cost height, so be difficult to the market of replacement diesel engine.And diesel engine promptly has the characteristics that structure is simple relatively, operating cost is low, but noise is big during operation, has restricted its application, how to overcome the noise of internal-combustion engine, and particularly the noise of diesel engine has become the problem of many mechanisms research.The noise source of internal-combustion engine comprises following several respects at least: the noise that the sound that suction and discharge are sent, combustion explosion sound and mechanical transmission produce.Solving noise, need take all factors into consideration the problem of above several respects, is exhaust noise and study maximum at present, unilaterally solved exhaust noise, but another noise source highlights again.The suction port place of existing diesel is equipped with an air filter, and its structure comprises that water proof cover and that a cylindrical shell, is arranged at cylindrical shell top is located at the filter core of crossing in the cylindrical shell, and noise of air that air inlet produces is not all made noise reduction process.Because the air-breathing of diesel engine be intermittent type, the minibreak after high speed is air-breathing, air produces bigger inertia and refluxes in the suction tude ingress, cause big noise, Here it is air suction and noise source, how noise reduction just becomes the object that everybody studies.
Summary of the invention:
The purpose of this utility model is to reduce the intake silencer that intermittent air circulation produces noise in suction port place design one.
Technical solutions of the utility model are achieved in that a kind of intake silencer, main body is the cylindrical shell of a sealing, the cylindrical shell downside offers a suction port and an air outlet, the suction port place is provided with air filtering core, it is characterized in that cylindrical shell is divided into suction chamber and discharge chamber, is provided with the labyrinth air flue in the suction chamber, two Room dividing plates are provided with a gas port, structure leads to 2 air chambers, and the place, air outlet is provided with inner core tube, inner core tube inlet back-off one outer pipe cap.The intake silencer of this structure forms an effective sound absorption cavity and an air pressure stabilizing cavity between filter core and labyrinth air flue, and the effect of air backflow resistent is played in the gap that forms between inner core tube and outer pipe cap, reduces because of the air-breathing cross-ventilation noise that produces at intermittence.
The utility model is reasonable in design, and is simple in structure, easy to manufacture, changes the noise of air that intermittently air inlet produces effectively.
Description of drawings:
Accompanying drawing is the utility model section of structure
Embodiment:
With reference to accompanying drawing, a kind of intake silencer, main body is the cylindrical shell of a sealing, the cylindrical shell downside offers a suction port 1 and an air outlet 2, suction port 1 place is provided with air filtering core 3, and its structure is that cylindrical shell is divided into suction chamber 4 and discharge chamber 5, establishes in the suction chamber 4 and educates labyrinth air flue 6, two Room dividing plates 7 are provided with a gas port 8, structure leads to 2 air chambers, and 2 places, air outlet are provided with inner core tube 21, inner core tube 21 inlet's back-offs one outer pipe cap 22,22 of inner core tube 21 and outer pipe caps form a gap, for air circulation.Legend China and foreign countries pipe cap 22 is positioned on the upper cylinder, also can be fixed on inner core tube 21 tops.Cylindrical shell at least on top and four sides be double panel structure, doubling plate is formed by individual layer spot welding, has sound deadening, reduces sympathetic response sound.Gas port 8 edges on the dividing plate, reduce air flows and cause the cylindrical shell vibration greater than 10mm far from cylindrical shell top laminate.
Claims (3)
1, a kind of intake silencer, main body is the cylindrical shell of a sealing, the cylindrical shell downside offers a suction port and an air outlet, the suction port place is provided with air filtering core, it is characterized in that cylindrical shell is divided into suction chamber and discharge chamber, is provided with the labyrinth air flue in the suction chamber, two Room dividing plates are provided with a gas port, structure leads to 2 air chambers, and the place, air outlet is provided with inner core tube, inner core tube inlet back-off one outer pipe cap.
2, intake silencer according to claim 1, it is characterized in that cylindrical shell at least on top and four sides be double panel structure.
3, intake silencer according to claim 1, it is characterized in that gas port edge on the dividing plate far from cylindrical shell top laminate greater than 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01252000 CN2503208Y (en) | 2001-09-24 | 2001-09-24 | Air inlet silencing apapratus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01252000 CN2503208Y (en) | 2001-09-24 | 2001-09-24 | Air inlet silencing apapratus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2503208Y true CN2503208Y (en) | 2002-07-31 |
Family
ID=33661806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01252000 Expired - Fee Related CN2503208Y (en) | 2001-09-24 | 2001-09-24 | Air inlet silencing apapratus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2503208Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388574A (en) * | 2013-06-29 | 2013-11-13 | 芜湖通来萨普压缩机有限公司 | Axial sound insulation air filter for air compressor |
| CN116557270A (en) * | 2023-07-10 | 2023-08-08 | 山东宏润空压机科技有限公司 | Clean air source generator |
-
2001
- 2001-09-24 CN CN 01252000 patent/CN2503208Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388574A (en) * | 2013-06-29 | 2013-11-13 | 芜湖通来萨普压缩机有限公司 | Axial sound insulation air filter for air compressor |
| CN116557270A (en) * | 2023-07-10 | 2023-08-08 | 山东宏润空压机科技有限公司 | Clean air source generator |
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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 |