CN210637289U - High-temperature-resistant resistive muffler after being pressed by supercharger - Google Patents
High-temperature-resistant resistive muffler after being pressed by supercharger Download PDFInfo
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- CN210637289U CN210637289U CN201920827028.0U CN201920827028U CN210637289U CN 210637289 U CN210637289 U CN 210637289U CN 201920827028 U CN201920827028 U CN 201920827028U CN 210637289 U CN210637289 U CN 210637289U
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Abstract
The utility model relates to a booster presses back high temperature resistant hindering nature muffler, including muffler main part and mounting panel, the muffler main part include airflow outlet pipe and the hush pipe that the axial was arranged, the inside coaxial arrangement of hush pipe have porous cylindrical plate, the inside wall of the outside of porous cylindrical plate and hush pipe between form the amortization inner chamber, the inside packing of this amortization inner chamber has the metal fiber layer, the mounting panel install the one end of hush pipe and be provided with the air current entry at the middle part. The utility model discloses set up the amortization inner chamber inside the muffler to fill the metal fiber layer, make up the amortization with the perforated plate, can obviously reduce compressor export radiation noise.
Description
Technical Field
The utility model relates to a turbo charger field especially relates to a high temperature resistant hindering nature muffler after booster is pressed.
Background
In the automobile industry, with the stricter requirements on energy conservation and emission reduction, the engine matched with the turbocharger is more and more popular. With the advance of light weight and miniaturization of the engine, people have higher and higher requirements on low-speed torque and high power of the engine, so that the noise problem of the turbocharger is more and more prominent, and when the turbocharger runs, the noise radiation at the outlet of the gas compressor is very obvious, so that the design of a reliable and effective compression silencer becomes very necessary.
In the prior art, 2 modes are generally adopted for solving the problem of noise at the outlet of a supercharger compressor:
1. a broadband resistant silencer is added at the outlet of the pressure shell, and the silencer is formed by combining a plurality of resonance cavities, has larger volume, is not beneficial to the arrangement of the whole vehicle and has higher cost. The sound absorption effect on high-frequency noise is not good enough.
2. The impedance composite silencer is also large in size and high in cost, sound-absorbing cotton is generally used as a sound-absorbing material of the silencer, the silencer cannot resist high temperature, the silencer is generally used at the inlet of the compressor, and the silencer cannot be used at the outlet of the compressor due to the fact that the temperature of the outlet of the compressor is high.
Disclosure of Invention
The utility model aims to solve the technical problem that a booster presses back high temperature resistant hindering nature muffler is provided, sets up the amortization inner chamber inside the muffler to fill the metal fiber layer, make up the amortization with the perforated plate, can obviously reduce compressor export radiation noise.
The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a booster presses back resistant hindering nature muffler of high temperature, includes muffler main part and mounting panel, the muffler main part include airflow outlet pipe and the hush pipe that the axial was arranged, the inside coaxial arrangement of hush pipe have porous cylindrical plate, the outside of porous cylindrical plate and hush pipe between the inside wall form the amortization inner chamber, the inside packing of this amortization inner chamber has the metal fiber layer, the mounting panel install the one end of hush pipe and be provided with the air current entry at the middle part.
As a supplement to the technical solution of the present invention, the outer side of the porous cylindrical plate is provided with a protective layer for preventing the metal fiber from passing through the porous cylindrical plate.
Further, the metal fiber layer is arranged in a single-layer or multi-layer laminated structure.
Furthermore, the protective layer is a microporous thin plate wrapped on the outer side of the porous cylindrical plate.
Furthermore, the inner side wall of the porous cylindrical plate is axially flush with the inner side wall of the airflow outlet pipe.
Has the advantages that: the utility model relates to a booster presses back high temperature resistant resistive muffler, moreover, the steam generator is simple in structure, utilize metal fiber high temperature resistance, durability, advantages such as good mechanical strength, prepare into metal fiber porous material with metal fiber, resistive material as resistive muffler uses, and make up into resonance sound absorption composite construction with metal fiber porous material and perforated plate and have obvious noise cancelling effect to pressing back medium-high frequency noise, especially the middle-high frequency wide band noise has fine effect, this muffler is small, the cost is lower, and the metal fiber layer can make up into gradient composite metal fiber porous material with the metal fiber layer of the different porosity of multilayer or different fiber diameter, has better sound absorption effect, and can reduce porous fiber material's thickness, further reduce the muffler volume, has fine spreading value.
Drawings
FIG. 1 is a front view structural diagram of the present invention;
FIG. 2 is a front view of the structure of the half-section of the present invention;
fig. 3 is a test chart of the transmission loss of the silencer according to the present invention.
The figure is as follows: 1. a muffler main body; 2. an air flow outlet pipe; 3. a metal fiber layer; 4. a sound-deadening tube; 5. a porous cylindrical plate; 6. a protective surface layer; 7. and (7) mounting the plate. 8. An air flow inlet.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
As shown in fig. 1-2, the technical solution adopted by the utility model for solving the technical problem is: the utility model provides a resistive muffler of high temperature resistance after booster is pressed, includes muffler main part 1 and mounting panel 7, muffler main part 1 include airflow outlet pipe 2 and the hush pipe 4 that the axial was arranged, the inside coaxial arrangement of hush pipe 4 have porous column plate 5, the outside of porous column plate 5 and hush pipe 4's inside wall between form the amortization inner chamber, the inside packing of this amortization inner chamber has metal fiber layer 3, mounting panel 7 install the one end at hush pipe 4 and be provided with air inlet 8 at the middle part.
The outside of porous cylindricality board 5 arranged the one deck and prevented that metal fiber from passing through the armor layer 6 of porous cylindricality board 5, armor layer 6 mainly is in order to prevent that metal fiber from droing from the amortization inner chamber, influencing the automotive reliability.
The metal fiber layer 3 is arranged in a single-layer or multi-layer laminated structure.
The protective layer 6 is a microporous thin plate wrapped on the outer side of the porous cylindrical plate 5, and the microporous thin plate prevents metal fibers from passing through on the premise of not obstructing airflow.
The inner side wall of the porous cylindrical plate 5 is axially flush with the inner side wall of the airflow outlet pipe 2.
When the silencer is used, the silencer main body 1 is installed at the high-temperature air outlet end of the turbocharger through the installation plate 7, high-temperature waste gas enters the silencer main body 1 from the air inlet 8, the noise of the high-temperature waste gas can be absorbed when the high-temperature waste gas passes through the silencing pipe 4, and the application of noise with different frequencies can be achieved by optimizing the combination of the metal fiber porosity, the wire diameter, the material thickness and the like and the porous plates with different perforation rates.
As an embodiment of the present invention:
this patent muffler structure can be through filling length, the thickness that changes inner chamber metal fiber, metal fiber's material, fiber diameter, the porosity that metal fiber filled, the muffling frequency and the noise cancelling effect of optimizing the muffler such as the perforation rate of perforated plate. The metal fiber layer is changed into a plurality of fiber layers with different parameters to be combined and superposed, so that the noise reduction effect is better; leave a layer air bed with metal fiber layer and muffler inner wall, can reduce cost, also have better promotion to the low frequency noise cancelling effect of centering.
Sample example:
the length is the axial length of the silencing inner cavity, and the thickness is the radial thickness of the silencing inner cavity.
3 appearance muffler normal atmospheric temperature transmission loss actual measurement as shown in fig. 3, the muffler of different parameters has different noise cancelling effect, wholly has better noise cancelling effect at the broad frequency.
The frequency of the impulse noise after being pressed is about 2200-3300 Hz, the noise is obvious in the state without the silencer, a mass production resistant silencer is additionally arranged, the frequency of the silencer is 2900 +/-100 Hz, and the noise is obviously improved. According to the real vehicle test, what the relative noise cancelling effect of muffler was relatively poor is sample 3, 2200 ~ 3300 Hz's noise cancelling effect has reached the resistance muffler effect of volume production state completely, and what the noise cancelling effect was better is sample 2, and noise cancelling effect is better, almost can eliminate the noise completely.
The actual measurement is carried out on the effect of the whole vehicle silencer of the broadband noise of about 3000-10000 Hz, the mass production resistant silencer is additionally arranged, the frequency of the silencer is 2900 +/-100 Hz, the high-frequency broadband noise is not obviously improved, and the sample piece 2 and the sample piece 3 obviously improve the whole broadband noise band of the noise of 3000-10000 Hz, so that the silencer has the obvious silencing effect on the broadband noise.
The utility model discloses a metal fiber layer can be with the different porosity of multilayer or different fiber diameter's metal fiber layer combination composition gradient composite metal fiber porous material, has better sound absorption effect, and can reduce porous fiber material's thickness, further reduces the muffler volume.
Claims (5)
1. The utility model provides a resistive muffler of high temperature resistance after booster is pressed, includes muffler main part (1) and mounting panel (7), its characterized in that, muffler main part (1) air outlet pipe (2) and hush pipe (4) including the axial arrangement, the inside coaxial arrangement of hush pipe (4) porous cylindrical plate (5), the outside of porous cylindrical plate (5) and the inside wall of hush pipe (4) between form the amortization inner chamber, the inside packing of this amortization inner chamber has metal fiber layer (3), mounting panel (7) install the one end at hush pipe (4) and be provided with air inlet at the middle part.
2. The high temperature resistant resistive muffler after being pressed by a supercharger according to claim 1, wherein: and a protective layer (6) for preventing the metal fibers from penetrating through the porous cylindrical plate (5) is arranged on the outer side of the porous cylindrical plate (5).
3. The high temperature resistant resistive muffler after being pressed by a supercharger according to claim 1, wherein: the metal fiber layer (3) is arranged into a single-layer or multi-layer laminated structure.
4. The high temperature resistant resistive muffler after supercharger pressing of claim 2, wherein: the protective layer (6) is a microporous thin plate wrapped outside the porous cylindrical plate (5).
5. The high temperature resistant resistive muffler after being pressed by a supercharger according to claim 1, wherein: the inner side wall of the porous cylindrical plate (5) is axially flush with the inner side wall of the airflow outlet pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920827028.0U CN210637289U (en) | 2019-06-03 | 2019-06-03 | High-temperature-resistant resistive muffler after being pressed by supercharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920827028.0U CN210637289U (en) | 2019-06-03 | 2019-06-03 | High-temperature-resistant resistive muffler after being pressed by supercharger |
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| CN210637289U true CN210637289U (en) | 2020-05-29 |
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| CN201920827028.0U Active CN210637289U (en) | 2019-06-03 | 2019-06-03 | High-temperature-resistant resistive muffler after being pressed by supercharger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118202A (en) * | 2019-06-03 | 2019-08-13 | 宁波丰沃涡轮增压***有限公司 | High temperature resistant resistive muffler after a kind of booster pressure |
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2019
- 2019-06-03 CN CN201920827028.0U patent/CN210637289U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110118202A (en) * | 2019-06-03 | 2019-08-13 | 宁波丰沃涡轮增压***有限公司 | High temperature resistant resistive muffler after a kind of booster pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 433, xingciqi Road, Hangzhou Bay New District, Cixi City, Ningbo City, Zhejiang Province Patentee after: Ningbo Fengwo booster Technology Co.,Ltd. Address before: No. 433, xingciqi Road, Hangzhou Bay New District, Cixi City, Ningbo City, Zhejiang Province Patentee before: VOFON TURBO SYSTEMS (NINGBO) Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |