CN201865729U - Sectionalized multiple-cavity labyrinth dissipation type silencer - Google Patents
Sectionalized multiple-cavity labyrinth dissipation type silencer Download PDFInfo
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- CN201865729U CN201865729U CN2010206393073U CN201020639307U CN201865729U CN 201865729 U CN201865729 U CN 201865729U CN 2010206393073 U CN2010206393073 U CN 2010206393073U CN 201020639307 U CN201020639307 U CN 201020639307U CN 201865729 U CN201865729 U CN 201865729U
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- core pipe
- air inlet
- pipe
- end cover
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Abstract
The utility model relates to a sectionalized multiple-cavity labyrinth dissipation type silencer. A front end cover and a rear end cover are respectively installed at two side ends of a casing; ports are respectively formed at the lower part of the front end cover and the upper part of the rear end cover; the cavity of the casing is divided into a first cavity, a second cavity, a third cavity and a fourth cavity through a front baffle, a middle baffle and a rear baffle; an air inlet casing pipe is sheathed on one side of an air inlet core pipe; one port at one end of the air inlet casing pipe is butted with the port of the front end cover, is fixed on the front, middle and rear baffles, penetrates the first, the second and the third cavities and is stopped at the fourth cavity; an air inlet casing pipe is sheathed on one side of an air outlet core pipe, is fixed on the front, middle and rear baffles, penetrates the first, second, third and fourth cavities and is stopped on the rear end cover; the port of the air inlet casing pipe is meshed with the port of the rear end cover; a first core pipe is formed between the air outlet core pipe and the air inlet core pipe and fixed on the front baffle and the middle baffle; and a second core pipe is fixed on the rear baffle close to the air inlet core pipe. The silencer has the advantages of compact structure and reasonable design, and can effectively reduce exhaust noise of an engine within a whole rotation speed scope.
Description
Technical field
The utility model relates to a kind of automotive muffler, especially relates to the lost dissipation type silencing apparatus of a kind of segmentation multi-cavity.
Background technique
At present, along with the continuous expansion of urban size, city vehicle also increases thereupon, and when following transport development, automobile noise pollutes also extensively to be familiar with by people.At the main source motor of automobile noise, exhaust silencer rational in infrastructure is to reduce the efficient ways of car load pass-by noise.Present existing acoustic wave filter structure generally comprises suction tude, housing, outlet pipe etc.The kind of silencing apparatus is a lot, but studies carefully its noise elimination mechanism, can be divided into six kinds of main types to them again, i.e. dissipative muffler, reactive muffler, impedance complex formula silencing apparatus, micropunch plate muffler, micropole diffusor and active silencer.Use now maximum impedance complex formula silencing apparatuss and be exactly by allowing waste gas cut through the baffle plate of porous step by step and press and the absorption of sound-absorbing material, the mode that is discharged at last in the atmosphere realizes acoustically effective.And the volume of single silencing pot and quality are subjected to the restriction of car body, and effect can not reach re-set target.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that exists in the above-mentioned technology, and a kind of compact structure, reasonable in design is provided, and can subdue the lost dissipation type silencing apparatus of segmentation multi-cavity of the exhaust sound in the whole speed range of motor effectively.
In order to achieve the above object, the technical solution adopted in the utility model is: be separately installed with front cover in the housing two side ends, rear end cover, the front cover bottom, rear end cover top is ported respectively, by preceding dividing plate, central diaphragm, rear bulkhead is divided into first chamber with the housing cavity, second chamber, the 3rd chamber, the 4th chamber, air inlet core pipe one side is set with the air inlet housing pipe, one end port and front cover have port and connect, be fixed on preceding dividing plate, central diaphragm, on the rear bulkhead, and run through first chamber, second chamber, the 3rd chamber is by the 4th chamber, exhaust core pipe one side is with the air inlet housing pipe and is fixed on preceding dividing plate, central diaphragm, rear bulkhead, and originate in first chamber and pass second chamber, the 3rd chamber, the 4th chamber ends in rear end cover, its port and rear end cover port match, before having the first core pipe to be fixed between exhaust core pipe and the air inlet core pipe on dividing plate and the central diaphragm, be close on the rear bulkhead of air inlet core pipe and be fixed with the second core pipe.
The utility model has the advantages that:
1, compact structure, reasonable in design can be subdued the exhaust sound in the whole speed range of motor effectively;
2, the utility model has reduced the impact of high-temperature high-pressure air flow to main muffler because segmentation connects silencing apparatus, has prolonged the working life of main muffler.Because lost regulating action makes that the back pressure of motor under high rotating speed is lower, thereby has guaranteed the power character and the Economy of motor.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the utility model air inlet core pipe, air inlet housing pipe, absorbent treatment linkage structure schematic representation;
Fig. 4 is the utility model absorbent treatment, exhaust display pipe, exhaust core pipe linkage structure schematic representation;
Fig. 5 is the utility model air inlet core pipe partial sectional view;
Fig. 6 is the utility model sub-muffler core tubular construction schematic representation.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
By Fig. 1-Fig. 6 as can be known, the utility model is separately installed with front cover 2 in housing 3 two side ends, rear end cover 7, front cover 2 bottoms, rear end cover 7 tops are ported respectively, by preceding dividing plate 4, central diaphragm 5, rear bulkhead 6 is divided into first chamber 22 with housing 3 cavitys, second chamber 23, the 3rd chamber 24, the 4th chamber 25, air inlet core pipe 11 1 sides are set with air inlet housing pipe 12, one end port and front cover 2 have port and connect, dividing plate 4 before being fixed on, central diaphragm 5, on the rear bulkhead 6, and run through first chamber 22, second chamber 23, the 3rd chamber 24 is by the 4th chamber 25, exhaust core pipe 15 1 sides are with air inlet housing pipe 12 and are fixed on preceding dividing plate 4, central diaphragm 5, rear bulkhead 6, and originate in first chamber 22 and pass second chamber 23, the 3rd chamber 24, the 4th chamber 25 ends in rear end cover 7, its port and rear end cover 7 ports match, before having the first core pipe 9 to be fixed between exhaust core pipe 15 and the air inlet core pipe 11 on dividing plate 4 and the central diaphragm 5, be close on the rear bulkhead 6 of air inlet core pipe 11 and be fixed with the second core pipe 10.
Two sections positions, described air inlet core pipe 11 front and back are respectively equipped with a plurality of circular holes 20 that differ in the aperture.
On the tube wall of described air inlet housing pipe 12 and air inlet core pipe 11 absorbent treatment 13 is housed.
On the tube wall of described exhaust core pipe 15 and exhaust display pipe 14 connecting parts absorbent treatment 13 is housed, has a plurality of circular holes 20 on the exhaust core pipe 15 back segment position tube walls.
The utility model main muffler front cover 2, air inlet core-pipe subassembly 1, exhaust core pipe assembly 8, the first core pipe 9, the second core pipe 10, preceding dividing plate 4, central diaphragm 5, rear bulkhead 6, rear end cover 7, housing 3.Described housing 3 one ends are suction port, compress with front cover 2 flange to be connected, and guarantee its tightness.Wherein front cover 2 is connected with described air inlet core-pipe subassembly 1, forms its suction port.Described housing 3 the other ends are relief opening, compress with rear end cover 7 flange to be connected, and guarantee its tightness.Wherein rear end cover 7 is connected with described exhaust core pipe assembly 8, forms its relief opening.Intermediate portion is an expansion chamber, is divided into four chambeies by preceding dividing plate 4, central diaphragm 5, rear bulkhead 6, and it is mainly used in subdues the automobile engine to exhaust noise.
Described main muffler air inlet core-pipe subassembly 1 is made up of air inlet core pipe 11, air inlet housing pipe 12, absorbent treatment 13.Air inlet core-pipe subassembly 1 originates in front cover 2, and its stomidium is a suction port, runs through first chamber 22, second chamber 23, the 3rd chamber 24, ends in the 4th chamber 25.Be distributed with the different punched tape in aperture, three places on the described air inlet core pipe 11, wherein punched tape outside, first place is welded with air inlet housing pipe 12, between air inlet housing pipe 12 and the air inlet core pipe 11 absorbent treatment 13 is installed, as glass silk floss.Be in first chamber 22, second chamber 23, the 3rd chamber 24 punched tapes herein and be in the 3rd chamber 24.
Described main muffler exhaust core pipe assembly 8 is made up of exhaust core pipe 15, exhaust display pipe 14, absorbent treatment 13.Exhaust core pipe assembly 8 originates in first chamber 22, second chamber 23, the 3rd chamber 24, the 4th chamber 25, ends in rear end cover 7, and its stomidium is a relief opening.Be distributed with the different punched tape in aperture, two places on the described exhaust core pipe 15, wherein first place's punched tape is in second chamber 23, punched tape outside, second place is welded with exhaust display pipe 14, between exhaust display pipe 14 and the exhaust core pipe 15 absorbent treatment 13 is installed, as glass silk floss.
Described main muffler air inlet core-pipe subassembly 1 extends to the 4th chamber 25 always, the high-frequency noise of the exhaust sound that comes from motor is absorbed at first chamber 22, remaining part continues propagates down stream, and in the 3rd chamber 24, produce lost, be that a part of noise enters the 3rd chamber 24 by the perforation on the tube wall, another part enters the 4th chamber 24 and produces resonance.The described second core pipe 10 is fixed on the rear bulkhead 6, originates in the 3rd chamber 24, ends in the 4th chamber 25.Thereby the gas of the 4th chamber 25 is returned into the 3rd chamber 24 by the second core pipe 10.The two-way sound wave carries out destructive interference in the 3rd chamber 24, thereby has offset most of medium and low frequency noise.The described first core pipe 9 has punched tape on the tube wall, be in second chamber 23 herein.On dividing plate 4 and the central diaphragm 5, originate in first chamber 22 before being fixed in, end in the 3rd chamber 23.Thereby make the gas of the 3rd chamber 23 enter first chamber 22, second chamber 23 by the first core pipe 9.Air-flow and sound wave produce lost through the punched tape of the first core pipe 9 at second chamber 23.The part of the gas in second chamber 23, the 3rd chamber enters first chamber, return afterwards and enter exhaust core pipe 15, gas at second chamber 23 meets by perforation on the exhaust core pipe 15 and the gas that enters from first chamber 22 simultaneously, the two-way sound wave produces interferes, the result who interferes further reduces the medium and low frequency noise, at last will come from the air-flow regenerated noise that produces in the high-frequency noise of motor and the silencing apparatus and absorb, thereby realize that low frequency is to the good noise elimination effect of high frequency by the absorbent treatment 13 of exhaust core pipe assembly 8.
The utility model sub-muffler front cover 16, sub-muffler core pipe 17, sub-muffler housing 18, sub-muffler rear end cover 19.Described sub-muffler housing 18 1 ends are suction port, compress with sub-muffler front cover 16 flange to be connected, and guarantee its tightness.Wherein sub-muffler front cover 16 is connected with described sub-muffler core pipe 17, forms its suction port.Described sub-muffler housing 18 the other ends are relief opening, compress with sub-muffler rear end cover 19 flange to be connected, and guarantee its tightness.Wherein sub-muffler rear end cover 19 is connected with described sub-muffler core pipe 17, forms its relief opening.It is mainly used in subdues the automobile engine to exhaust low-frequency noise.Simultaneously, because lost regulating action, make motor exhaust, guaranteed that back pressure is lower under high rotating speed, thereby guaranteed the power character and the Economy of motor through sub-muffler and the main muffler classification pressure that disappears.
Claims (5)
1. the lost dissipation type silencing apparatus of a segmentation multi-cavity, comprise housing, it is characterized in that: be separately installed with front cover (2) in housing (3) two side ends, rear end cover (7), front cover (2) bottom, rear end cover (7) top is ported respectively, by preceding dividing plate (4), central diaphragm (5), rear bulkhead (6) is divided into first chamber (22) with housing (3) cavity, second chamber (23), the 3rd chamber (24), the 4th chamber (25), air inlet core pipe (11) one sides are set with air inlet housing pipe (12), one end port and front cover (2) have port and connect, be fixed on preceding dividing plate (4), central diaphragm (5), on the rear bulkhead (6), and run through first chamber (22), second chamber (23), the 3rd chamber (24) is by the 4th chamber (25), exhaust core pipe (15) one sides are with air inlet housing pipe (12) and are fixed on preceding dividing plate (4), central diaphragm (5), rear bulkhead (6), and originate in first chamber (22) and pass second chamber (23), the 3rd chamber (24), the 4th chamber (25) ends in rear end cover (7), its port and rear end cover (7) port matches, there is the first core pipe (9) to be fixed on preceding dividing plate (4) and the central diaphragm (5) between exhaust core pipe (15) and the air inlet core pipe (11), is close on the rear bulkhead (6) of air inlet core pipe (11) and is fixed with the second core pipe (10).
2. the segmentation multi-cavity according to claim 1 dissipation type silencing apparatus of getting lost is characterized in that: two sections positions are respectively equipped with a plurality of circular holes (20) that differ in the aperture before and after the described air inlet core pipe (11).
3. the multi-cavity according to claim 1 dissipation type silencing apparatus of getting lost is characterized in that: on the tube wall of described air inlet housing pipe (12) and air inlet core pipe (11) absorbent treatment (13) is housed.
4. the multi-cavity according to claim 1 dissipation type silencing apparatus of getting lost, it is characterized in that: on the tube wall of described exhaust core pipe (15) and exhaust display pipe (14) connecting part absorbent treatment (13) is housed, has a plurality of circular holes (20) on the tube wall of exhaust core pipe (15) back segment position.
5. the segmentation according to claim 1 dissipation type silencing apparatus of getting lost, it is characterized in that: sub-muffler core pipe (17) intermediate portion has a plurality of circular holes (21) of same apertures in the described sub-muffler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206393073U CN201865729U (en) | 2010-12-02 | 2010-12-02 | Sectionalized multiple-cavity labyrinth dissipation type silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206393073U CN201865729U (en) | 2010-12-02 | 2010-12-02 | Sectionalized multiple-cavity labyrinth dissipation type silencer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201865729U true CN201865729U (en) | 2011-06-15 |
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ID=44136886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206393073U Expired - Lifetime CN201865729U (en) | 2010-12-02 | 2010-12-02 | Sectionalized multiple-cavity labyrinth dissipation type silencer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201865729U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306780A (en) * | 2013-05-30 | 2013-09-18 | 安徽江淮汽车股份有限公司 | Automobile muffler |
| CN104975909A (en) * | 2015-07-08 | 2015-10-14 | 中国船舶重工集团公司第七一九研究所 | Automobile exhaust silencer with air purifying function |
-
2010
- 2010-12-02 CN CN2010206393073U patent/CN201865729U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306780A (en) * | 2013-05-30 | 2013-09-18 | 安徽江淮汽车股份有限公司 | Automobile muffler |
| CN103306780B (en) * | 2013-05-30 | 2015-12-09 | 安徽江淮汽车股份有限公司 | A kind of silencer for automobile |
| CN104975909A (en) * | 2015-07-08 | 2015-10-14 | 中国船舶重工集团公司第七一九研究所 | Automobile exhaust silencer with air purifying function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 150060 Heilongjiang city of Harbin Province Cultural Square Road Development Zone No. 18 Harbin Airui Automotive Exhaust System Co. Ltd. Patentee after: Harbin Ai Rui emission control technology Limited by Share Ltd Address before: 150060 Heilongjiang city of Harbin Province Cultural Square Road Development Zone No. 18 Harbin Airui Automotive Exhaust System Co. Ltd. Patentee before: Harbin Airui Automotive Exhaust System Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
|
| CX01 | Expiry of patent term |