CN201661341U - Automobile exhaust muffle sprayed with high temperature resistant sound-absorbing layer - Google Patents
Automobile exhaust muffle sprayed with high temperature resistant sound-absorbing layer Download PDFInfo
- Publication number
- CN201661341U CN201661341U CN2010201604716U CN201020160471U CN201661341U CN 201661341 U CN201661341 U CN 201661341U CN 2010201604716 U CN2010201604716 U CN 2010201604716U CN 201020160471 U CN201020160471 U CN 201020160471U CN 201661341 U CN201661341 U CN 201661341U
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- Prior art keywords
- temperature resistant
- sound absorption
- shell
- resistant sound
- automobile exhaust
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Abstract
An automobile exhaust muffle sprayed with a high temperature resistant sound-absorbing layer comprises an exhaust pipe and a casing; at least two through holes are machined on the pipe wall of the exhaust pipe in the casing, a high temperature resistant binder layer is coated on the inner wall of the casing, and a high temperature resistant sound-absorbing layer is sprayed on the high temperature resistant binder layer. The automobile exhaust muffle sprayed with the high temperature resistant sound-absorbing layer has good sound-absorbing performance, also ensures lower power loss of the engine and has low manufacturing cost.
Description
Technical field
The utility model relates to a kind of automobile exhaust muffler.
Background technique
Motor car engine work the time has a large amount of high-temp waste gas discharge, and the huge noise that produces with pressure surge, and wherein people also more and more pay close attention to the noise pollution problem of automobile exhaust.Automobile exhaust muffler must possess high temperature resistant and two fundamental functions of noise reduction.The silencing apparatus of prior art all runs into a pair of contradiction, and the sound absorbing capabilities that promptly improves silencing apparatus is a cost to increase exhaust back pressure (promptly increasing engine power loss) often.
Summary of the invention
Can not take into account sound absorbing capabilities and engine power loss, deficiency that cost is high for what overcome existing automobile exhaust muffler, the utility model provides a kind of automobile exhaust muffler that guarantees the spray adhesive high-temperature resistant sound absorption layer that lower engine power loss, cost are low when having good sound-absorbing performance.
The technological scheme that its technical problem that solves the utility model adopts is:
A kind of automobile exhaust muffler of spray adhesive high-temperature resistant sound absorption layer, comprising that outlet pipe and shell are positioned on the tube wall of outlet pipe of shell has two through holes at least, the inwall of described shell applies the high temperature resistant binder layer, spraying high-temperature resistant sound absorption material layer on described high temperature resistant binder layer.
Any that need illustrate: as required, can be chosen in all inwalls of shell, be that barrel shell, left cover and right cover plate all apply the high-temperature resistant sound absorption material layer, or the inwall of upper casing, lower casing all applies the high-temperature resistant sound absorption material layer, and the part inwall that also can be chosen in shell applies the high-temperature resistant sound absorption material layer.
Further, described shell comprises barrel shell, left cover and right cover plate, the left end opening of described left cover and described barrel shell is tightly connected, and the right-end openings of described right cover plate and described barrel shell is tightly connected, and described outlet pipe passes the hole of described left cover and right cover plate successively and is tightly connected.
Or: described shell comprises upper casing and lower casing, and described upper casing and lower casing are tightly connected and connect, and the left end and the right-hand member of described upper casing and lower casing joint are respectively equipped with mounting hole, and described outlet pipe passes described mounting hole and is tightly connected.
Further again, the surface of described high-temperature resistant sound absorption material layer is hole, concavo-convex or pieces.Also can adopt other forms, perhaps the admixture of various structures so that consume the sound transmission energy significantly, plays good acoustically effective.
The average thickness of described high-temperature resistant sound absorption material layer is 1～80mm.
Described high-temperature resistant sound absorption material layer is a high-temperature-resistant inorganic fibre, the SiO in the described high-temperature-resistant inorganic fibre
2Content is positioned at 50%～100%.Described high-temperature-resistant inorganic fibre is preferably resurrection glass fibre.
The single fiber diameter of described high-temperature-resistant inorganic fibre is positioned at 1～50 μ m, and length is positioned at 1～200mm.
Have left through hole on half section tube wall in a left side of outlet pipe in the shell, have right through hole on half section tube wall in the right side of the outlet pipe in the shell.
Described high-temperature-resistant inorganic fibre was processed into the spherolite that average diameter is in 1～10mm before the spraying machine of packing into, spherolite density is in 50～100kg/m
3
Technical conceive of the present utility model is: at the inner surface of the automobile exhaust muffler housing of prior art, the spray of high-temperature resistant sound absorption material is adhered on the described inner surface, sound-absorbing material has increased acoustic damping by high temperature resistant binder after on the suppressor case, improved the mode of vibration of housing self, can improve the sound insulation property of housing medium and low frequency, simultaneously structures such as the hole of sound-absorbing material, concavo-convex, pieces also can consume the sound transmission energy significantly, play good acoustically effective.
The beneficial effects of the utility model mainly show: 1, guarantee lower engine power loss when having good sound-absorbing performance; 2, simple in structure, exhaust is unobstructed, and easily manufactured; 3, manufacturing efficiency height.
Description of drawings
Fig. 1 is a kind of structural representation of automobile exhaust muffler of spray adhesive high-temperature resistant sound absorption layer.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the structural representation of the automobile exhaust muffler of another kind of spray adhesive high-temperature resistant sound absorption layer.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is a partial structurtes sectional drawing of shell.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 5, a kind of automobile exhaust muffler of spray adhesive high-temperature resistant sound absorption layer, comprise outlet pipe 1 and shell, be positioned on the tube wall of outlet pipe of shell and have two through holes at least, the inwall of described shell applies high temperature resistant binder layer 4, spray adhesive high-temperature resistant sound absorption material layer 3 on described high temperature resistant binder layer 4.
Further, the surface of described high-temperature resistant sound absorption material layer 3 is hole, concavo-convex or pieces.Also can adopt other forms, perhaps the admixture of various structures so that consume the sound transmission energy significantly, plays good acoustically effective.
See figures.1.and.2, shell is divided into barrel shell 2, left cover 2a and right cover plate 2b, at least have 2 through holes on the tube wall of described outlet pipe 1, the Kong Bingyu cover plate that outlet pipe 1 passes on left cover 2a and the right cover plate 2b is affixed, left cover 2a and right cover plate 2b are affixed with barrel shell 2 respectively, all fixing positions all seal, forming engine exhaust only enters from suction port 1a, discharge from air outlet 1b, 3 sprays of high-temperature resistant sound absorption material layer adhere to barrel shell 2, the inner surface of left cover 2a and right cover plate 2b, the surperficial 3f of high-temperature resistant sound absorption material layer 3,3fa and 3fb are hole, concavo-convex, mixed construction such as pieces.
With reference to Fig. 3 and Fig. 4, shell is the subdivision structure, and shell is divided into upper casing 2c and lower casing 2d, and described upper casing and lower casing are tightly connected, and the left end and the right-hand member of described upper casing and lower casing joint are respectively equipped with mounting hole, and described outlet pipe passes described mounting hole and is tightly connected.
The average thickness L of described high-temperature resistant sound absorption material layer 3 is 1～80mm, and the best is 5～20mm.
Described high-temperature resistant sound absorption material layer 3 is a high-temperature-resistant inorganic fibre, the SiO in the described high-temperature-resistant inorganic fibre
2Content is positioned at 50%～100%, and the best is 85%～95%; Described high-temperature-resistant inorganic fibre is preferably resurrection glass fibre.
The single fiber diameter of described high-temperature-resistant inorganic fibre is positioned at 1～50 μ m, and length is positioned at 1～200mm, and the best is single fiber diameter 6～12 μ m, length 50～100mm.
On half section tube wall, have left through hole 1c, on half section tube wall, have right through hole 1d near the outlet pipe of right cover plate near the outlet pipe of left cover.
In the present embodiment, at least have 2 through holes on the tube wall of described outlet pipe 1, engine exhaust only enters from suction port 1a, discharge from air outlet 1b, with reference to Fig. 1, high-temperature resistant sound absorption material layer 3 spray adheres to the inner surface of the high temperature resistant binder layer 4b of the high temperature resistant binder layer 4a of high temperature resistant binder layer 4, left cover 2a of barrel shell 2 and right cover plate 2b, and surperficial 3f, the 3fa of high-temperature resistant sound absorption material layer 3 and 3fb are mixed construction such as hole, concavo-convex, pieces; With reference to Fig. 2, high-temperature resistant sound absorption material layer 3 spray adheres to the inner surface of upper casing 2c and lower casing 2d, and the surperficial 3fc of sound-absorbing material layer 3 and 3fd are mixed construction such as hole, concavo-convex, pieces.
At least have 1 through hole 1c on the half section tube wall in the left side of outlet pipe 2, have 1 through hole 1d at least on right half section tube wall.
With reference to Fig. 5, described spraying high temperature resistant binder layer and spray adhesive high-temperature resistant sound absorption material layer can hocket, it is spray adhesive high-temperature resistant sound absorption material layer 3 on the high temperature resistant binder layer 4, on high-temperature resistant sound absorption material layer 3, can spray high temperature resistant coating adhesive layer 4e again, spray adhesive high-temperature resistant sound absorption material layer 3e again further, can spray high temperature resistant coating adhesive layer 4f again on high-temperature resistant sound absorption material layer 3e then, spray adhesive high-temperature resistant sound absorption material layer 3f again then is to meet the requirements of absorbent treatment thickness.
Described sound-absorbing material need be processed into the spherolite of the about 1～10mm of average diameter before the spraying machine of packing into, best average diameter is about 3mm, and spherolite density is no more than 150kg/m
3, optimum value 50～100kg/m
3, material should be loosened evenly.
Described spraying adhesive and the sticking sound-absorbing material of spray can hocket, i.e. spraying adhesive again on sound-absorbing material layer, and the sticking sound-absorbing material of spray again then is to meet the requirements of absorbent treatment thickness.
The manufacture method of the automobile exhaust muffler of present embodiment, the routine manufacturing and the welding and assembling method that comprise outlet pipe and shell, described automobile exhaust muffler manufacture method also comprises the inner surface operation of carrying out in the following order to the tube shell that is used for described silencing apparatus, promptly
(1) pretreatment procedure: described inner surface is carried out pretreatment, especially clean and drying process;
(2) coated with adhesive operation: described inner surface is carried out coated with adhesive, form adhesive layer 4, thickness is no more than 5mm, and the best is about 1mm;
(3) the sticking sound-absorbing material operation of spray: the sticking inorganic fibers of spray adhesive high-temperature resistant sound absorption material layer 3 on the high temperature resistant binder layer 4 of described inner surface, especially spray.
Claims (6)
1. the automobile exhaust muffler of a spray adhesive high-temperature resistant sound absorption layer, comprising that outlet pipe and shell are positioned on the tube wall of outlet pipe of shell has two through holes at least, it is characterized in that: the inwall of described shell applies high temperature resistant binder layer, spray adhesive high-temperature resistant sound absorption material layer on described high temperature resistant binder layer.
2. the automobile exhaust muffler of spray adhesive high-temperature resistant sound absorption layer as claimed in claim 1, it is characterized in that: the surface of described high-temperature resistant sound absorption material layer is hole, concavo-convex or pieces.
3. the automobile exhaust muffler of spray adhesive high-temperature resistant sound absorption layer as claimed in claim 1, it is characterized in that: described shell comprises barrel shell, left cover and right cover plate, the left end opening of described left cover and described barrel shell is tightly connected, the right-end openings of described right cover plate and described barrel shell is tightly connected, and described outlet pipe passes the hole of described left cover and right cover plate successively and is tightly connected.
4. the automobile exhaust muffler of spray adhesive high-temperature resistant sound absorption layer as claimed in claim 1, it is characterized in that: described shell comprises upper casing and lower casing, described upper casing and lower casing are tightly connected, the left end and the right-hand member of described upper casing and lower casing joint are respectively equipped with mounting hole, and described outlet pipe passes described mounting hole and is tightly connected.
5. as the automobile exhaust muffler of the described spray adhesive high-temperature resistant sound absorption layer of one of claim 1～4, it is characterized in that: the average thickness of described high-temperature resistant sound absorption material layer is 1～80mm.
6. as the automobile exhaust muffler of the described spray adhesive high-temperature resistant sound absorption layer of one of claim 1～4, it is characterized in that: have left through hole on half section tube wall in a left side of the outlet pipe in the shell, have right through hole on half section tube wall in the right side of the outlet pipe in the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201604716U CN201661341U (en) | 2010-04-16 | 2010-04-16 | Automobile exhaust muffle sprayed with high temperature resistant sound-absorbing layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201604716U CN201661341U (en) | 2010-04-16 | 2010-04-16 | Automobile exhaust muffle sprayed with high temperature resistant sound-absorbing layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661341U true CN201661341U (en) | 2010-12-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201604716U Expired - Fee Related CN201661341U (en) | 2010-04-16 | 2010-04-16 | Automobile exhaust muffle sprayed with high temperature resistant sound-absorbing layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661341U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806235A (en) * | 2010-04-16 | 2010-08-18 | 浙江工业大学 | Automobile exhaust muffler of spray adhesive high-temperature resistant sound absorption layer and manufacturing method thereof |
| CN113202597A (en) * | 2021-06-09 | 2021-08-03 | 金华欧仑催化科技有限公司 | Automobile exhaust silencer adhered with high-temperature-resistant sound absorption layer and manufacturing method thereof |
-
2010
- 2010-04-16 CN CN2010201604716U patent/CN201661341U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101806235A (en) * | 2010-04-16 | 2010-08-18 | 浙江工业大学 | Automobile exhaust muffler of spray adhesive high-temperature resistant sound absorption layer and manufacturing method thereof |
| CN113202597A (en) * | 2021-06-09 | 2021-08-03 | 金华欧仑催化科技有限公司 | Automobile exhaust silencer adhered with high-temperature-resistant sound absorption layer and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20130416 |