CN2302338Y - Trapezoidal narrow seam microporous plate type internal combustion engine noise muffler - Google Patents
Trapezoidal narrow seam microporous plate type internal combustion engine noise muffler Download PDFInfo
- Publication number
- CN2302338Y CN2302338Y CN 97219828 CN97219828U CN2302338Y CN 2302338 Y CN2302338 Y CN 2302338Y CN 97219828 CN97219828 CN 97219828 CN 97219828 U CN97219828 U CN 97219828U CN 2302338 Y CN2302338 Y CN 2302338Y
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- CN
- China
- Prior art keywords
- micropore
- trapezoidal narrow
- narrow slit
- chamber
- combustion engine
- 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 relates to an internal combustion engine exhaust noise muffler device, particularly a trapezoidal narrow seam microporous plate type internal combustion engine noise muffler which can eliminate the gasoline engine or diesel engine exhaust noise. It is composed of a sound deadening pipe drilled through with a trapezoidal narrow seam or a micropore, a closing cap and its cylindrical shell. The main technique characteristic is that a micropore ring clapboard is arranged at the middle part of the sound deadening pipe cavity. The left side and the right side of the micropore ring clapboard are respectively provided with a circular partition board, whose external ring is a trapezoidal narrow seam and whose internal ring is evenly distributed with micropores, and the two ends of the circular partition board are provided with a closing cap, thus constituting sound deadening I cavity, II cavity, III cavity and IV cavity. The utility model can obtain good aerodynamic quality and good sound deadening effect with low manufacturing composite cost. The fuel consumption is equal to or more than 1g/hs, and the sound deadening amount reaches 2-4dB (A).
Description
The utility model relates to a kind of silencer of I. C. engine exhaust noise, especially a kind of trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer of eliminating petrol engine or diesel exhaust gas noise.
In the silencer technology of known I. C. engine exhaust noise, with the utility model more approaching be Chinese patent " trapezoidal narrow slit type high efficiency internal combustion engine silencing apparatus ", the patent No.: 91201366.4.This silencing apparatus by elliptical horn housing and micro silencer sleeve pipe, have in trapezoidal narrow slit and tiny hole noise silencer, oval-shaped trapezoidal narrow slit micropore ante-chamber dividing plate and the micropore back cavity dividing plate and shrouding is constituted, to engine noise, particularly the noise of lower band is eliminated and has been produced certain effect.But there are following 2 deficiencys in it: the one, because the tube wall gap of the elliptical horn housing of this silencing apparatus and micro silencer sleeve pipe is little, and sectional area successively decreases gradually from exhaust gas intake port to the outlet of eliminating the noise, the baffle design imperfection, make the exhaust crushing of afterbody noise elimination outlet increase, when I. C. engine exhaust amount＞1 liter, its aerodynamic quality is relatively poor, so that the effect of eliminating the noise is undesirable; The 2nd, elliptical horn pipe consumptive material is many, and manufacture difficulty is bigger.
The purpose of this utility model provides a kind of improved trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer, can reduce the exhaust crushing effectively, reduce fabricating cost, thereby strengthen the noise elimination effect of big air displacement internal-combustion engine.
Realize the purpose of this utility model, undertaken by following mode:
By the trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer that comprises that the hush tube that drills through trapezoidal narrow slit or micropore and noise elimination cavity dividing plate, capping and suppressor case thereof constitute, its design feature is to be provided with a micropore toroidal membrane in the noise elimination cavity stage casing, it is trapezoidal narrow slit that the right and left of micropore toroidal membrane respectively is provided with an outer shroud, interior ring is that the circular dividing plate of uniform micropore, two ends respectively are provided with a capping and constitute I chamber, II chamber, III chamber and IV chamber.
Noise elimination tube wall in the I chamber drills through the micropore of at least three circles and the trapezoidal narrow slit of a circle, the noise elimination tube wall that does not block in II chamber and the III chamber has respectively drilled through the trapezoidal narrow slit of a circle respectively in corresponding chamber, the noise elimination tube wall in the IV chamber drills through a trapezoidal narrow slit of circle and the uniform micropore of at least three circles.
The case design of silencing apparatus is a cylindrical shape.
Because the trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer that the utility model proposed is got rid of the micropore sleeve pipe in the noise elimination cavity, be designed to cylindrical noise elimination I, II, III, the IV chamber, and II, the noise elimination tube wall is set up a trapezoidal narrow slit that encloses in the circular dividing plate of the trapezoidal narrow slit of the whole circle of hollow micropore toroidal membrane that is provided with between the noise elimination cavity of III chamber and outer shroud and the IV chamber thereof has all increased punching rate, further reduce the crushing that afterbody is eliminated the noise and exported, can obtain aerodynamic quality preferably, thereby strengthen the noise elimination effect, especially big air displacement internal combustion engine noise elimination effect, and make also decline significantly of overall cost.The utility model shows through actual measurement: fuel oil consumption 〉=1g/hs, sound deadening capacity reach 2～4dB (A).
The concrete structure of the trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer that the utility model proposed is provided by following examples and accompanying drawing thereof:
Fig. 1 is the whole generalized section according to the trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer that the utility model proposes.
Fig. 2 is the front elevational schematic according to the micropore toroidal membrane of the trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer that the utility model proposes.
Fig. 3 is the front elevational schematic according to the circular dividing plate of the trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer that the utility model proposes.
As shown in Figure 1, drill through the hush tube (1) of trapezoidal narrow slit (6) or micropore (7) and the trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer that the interior circular dividing plate (4) of noise elimination cavity, toroidal membrane (5), capping (2) and suppressor case (3) thereof constitute.Be separated into I, II, III, IV chamber in its noise elimination cavity.Hush tube in the I chamber (1) tube wall drills through the micropore (7) of at least three circles and the trapezoidal narrow slit (6) of a circle, hush tube (1) tube wall that internal diameter does not block in II chamber and the III chamber has respectively drilled through a circle trapezoidal narrow slit (6) respectively, and the hush tube in the IV chamber (1) tube wall drills through a circle trapezoidal narrow slit (6) and the uniform micropore (7) of at least three circles.Micropore toroidal membrane (5) as shown in Figure 2, it is evenly equipped with the toroidal membrane that drills through micropore for the hollow outer shroud.Circular dividing plate (4) as shown in Figure 3, its outer shroud are a circle trapezoidal narrow slit (6) that drills through, and interior ring is the uniform micropore that drills through.Suppressor case (3) is designed to cylindrical shape.During work, silencing apparatus inlet end " → " is connected internal-combustion engine vent-pipe, the noise air-flow that outlet pipe is discharged at first enters the I chamber, micropore (7) and the micropore (7) of trapezoidal narrow slit (6) and circular dividing plate (4) and the effect of trapezoidal narrow slit (6) through hush tube (1) tube wall, carry out the absorption that penetrates friction and twice micropore (7) of twice trapezoidal narrow slit (6), enter the II chamber then successively, the III chamber, penetrating after the friction and the absorption of three micropores (7) from afterbody air outlet " → " discharge of four trapezoidal narrow slits (6) carried out in the IV chamber, and overall structure has reactive muffling, micro silencer is interfered combination properties such as noise elimination.
Claims (3)
1, a kind of trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer, it comprises hush tube and noise elimination cavity dividing plate, capping and the suppressor case thereof that drills through trapezoidal narrow slit or micropore, it is characterized in that the noise elimination cavity stage casing is provided with a micropore toroidal membrane (5), it is that trapezoidal narrow slit (6), interior ring are the circular dividing plate (4) of uniform micropore (7) that the right and left of micropore toroidal membrane (5) respectively is provided with an outer shroud respectively, and two ends respectively are provided with a capping (2) and constitute I chamber, II chamber, III chamber and IV chamber.
2, trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer according to claim 1, it is characterized in that hush tube (1) wall in the I chamber drills through the micropore (7) of at least three circles and the trapezoidal narrow slit (6) of a circle, hush tube (1) wall that internal diameter blocks in II chamber and the III chamber has respectively drilled through a circle trapezoidal narrow slit (6) respectively, and the hush tube in the IV chamber (1) wall drills through a circle trapezoidal narrow slit (6) and the uniform micropore (7) of at least three circles.
3, trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer according to claim 1 and 2 is characterized in that suppressor case (3) is made as cylindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97219828 CN2302338Y (en) | 1997-07-08 | 1997-07-08 | Trapezoidal narrow seam microporous plate type internal combustion engine noise muffler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97219828 CN2302338Y (en) | 1997-07-08 | 1997-07-08 | Trapezoidal narrow seam microporous plate type internal combustion engine noise muffler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2302338Y true CN2302338Y (en) | 1998-12-30 |
Family
ID=33935698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97219828 Expired - Fee Related CN2302338Y (en) | 1997-07-08 | 1997-07-08 | Trapezoidal narrow seam microporous plate type internal combustion engine noise muffler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2302338Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101743098A (en) * | 2007-07-13 | 2010-06-16 | 长年Tm公司 | Noise abatement device for a pneumatic tool |
-
1997
- 1997-07-08 CN CN 97219828 patent/CN2302338Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101743098A (en) * | 2007-07-13 | 2010-06-16 | 长年Tm公司 | Noise abatement device for a pneumatic tool |
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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 |