CN210218239U

CN210218239U - Resistive silencer structure capable of integrating pressure shell

Info

Publication number: CN210218239U
Application number: CN201920824389.XU
Authority: CN
Inventors: Feng Yang; 杨峰; Weide Chen; 陈卫德; Yonghong Wang; 王永红; Chao Ren; 任超
Original assignee: Ningbo Fertile Turbo Charge System Co Ltd
Current assignee: Ningbo Fengwo booster Technology Co.,Ltd.
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-03-31
Anticipated expiration: 2029-06-03

Abstract

The utility model relates to a can integrate hindering nature muffler structure of pressure shell, including pressure shell integrated circuit, pressure shell integrated circuit include airflow connection pipe and the hush pipe that the axial was arranged, the inside coaxial porous cylindrical plate of having arranged of hush pipe, the inside wall of outside and hush pipe of porous cylindrical plate between form the amortization inner chamber, the inside packing of this amortization inner chamber has the metal fiber layer, the coaxial detachable connecting pipe that is provided with of one end of hush pipe, the one end of detachable connecting pipe be provided with the end cover of sealing the one end of hush pipe. The utility model discloses can install in the import and the export of booster, 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 air current radiation noise.

Description

Resistive silencer structure capable of integrating pressure shell

Technical Field

The utility model relates to a turbo charger field especially relates to a can integrate hindering nature muffler structure of pressing shell.

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.

And the silencer that the air current of present booster was installed in the air current inlet and outlet department adopts different structures, and the cost is higher, needs to design a silencer that the import and export all can be used.

Disclosure of Invention

The utility model aims to solve the technical problem that a can integrate hindering nature muffler structure of pressing shell is provided, can install in the import and the export of booster, at the inside amortization inner chamber that sets up of muffler to fill the metal fiber layer, make up the amortization with the perforated plate, can obviously reduce the air current radiation noise.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a can integrate hindering nature muffler structure of pressure shell, including pressure shell integrated circuit, pressure shell integrated circuit include airflow connection 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 form the amortization inner chamber, the inside packing of this amortization inner chamber has the metal fiber layer, the coaxial detachable connection pipe that is provided with of one end of hush pipe, the one end of detachable connection pipe be provided with the end cover that seals the one end of hush pipe.

As right technical scheme a technical scheme's supplement, the outside of porous cylindricality board arranged the one deck and prevented that metal fiber from passing the armor layer of porous cylindricality board.

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 walls of the airflow connecting pipe and the detachable connecting pipe.

Has the advantages that: the utility model relates to a resistance silencer structure capable of integrating a pressure shell, which can be arranged at the inlet and the outlet of a supercharger, can be integrated with the pressure shell of the supercharger after being arranged, is internally provided with a silencing inner cavity and filled with a metal fiber layer, and combines a metal fiber porous material and a perforated plate into a resonance sound absorption composite structure to have obvious silencing effect on medium and high frequency noise after being pressed, and can obviously reduce airflow radiation noise; the detachable connection pipe that has the end cover is adopted to structural, and the diameter that makes the hush pipe can be done is bigger, can place the metal fiber layer that the number of piles is more, and the metal fiber layer can be constituteed into gradient composite metal fiber porous material with the metal fiber layer of the different porosity of multilayer or different fiber diameter in addition, has better sound absorption effect, and can reduce porous fiber material's thickness, further reduces 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 pressure shell integrated pipeline; 2. an airflow connecting pipe; 3. a detachable connecting pipe; 4. an end cap; 5. a metal fiber layer; 6. a protective surface layer; 7. a porous cylindrical plate; 8. a silencing tube.

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 but hindering nature muffler structure of integrated pressure shell, including pressure shell integrated circuit 1, pressure shell integrated circuit 1 including the air connecting pipe 2 and the hush pipe 8 that the axial was arranged, hush pipe 8's inside coaxial arrangement have porous cylindricality board 7, the outside of porous cylindricality board 7 and hush pipe 8's inside wall between form the amortization inner chamber, the inside packing of this amortization inner chamber has metal fiber layer 5, hush pipe 8's the coaxial detachable connection pipe 3 that is provided with of one end, detachable connection pipe 3's one end be provided with the end cover 4 that seals hush pipe 8's one end.

The outside of porous cylindricality board 7 arranged the one deck and prevented that metal fiber from passing protective layer 6 of porous cylindricality board 7, protective 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 5 is provided in a single-layer or multi-layer laminated structure.

The protective layer 6 is a microporous thin plate wrapped outside the porous cylindrical plate 7, and the microporous thin plate prevents metal fibers from passing through on the premise of not obstructing airflow.

The inside wall of porous cylindricality board 7 and the inside wall axial of air connecting pipe 2 and detachable connection pipe 3 flush, make the air current pass through more smoothly.

When using, insert on air inlet or the gas outlet of booster pressure shell with detachable connection pipe 3 or airflow connection pipe 2's one end, the air current enters into from detachable connection pipe 3 or airflow connection pipe 2 and presses shell integrated circuit 1, can absorb the noise of high temperature waste gas in the time of hush pipe 8, can reach the application to different frequency noise through the porous plate combination of optimizing metal fiber porosity, silk footpath, material thickness etc. and different perforation rate.

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 can be installed at the inlet and outlet of the supercharger, and can be integrated with the pressure shell of the supercharger after being installed, and the silencer is internally provided with a silencing inner cavity, is filled with a metal fiber layer, is combined with the perforated plate for silencing, and can obviously reduce the air flow radiation noise; the detachable connecting pipe with the end cover is structurally adopted, so that the diameter of the silencing pipe can be made larger, and metal fiber layers with more layers can be placed.

Claims

1. The utility model provides a can integrate hindering nature muffler structure of pressure shell, includes pressure shell integrated circuit (1), its characterized in that, pressure shell integrated circuit (1) including air connecting pipe (2) and hush pipe (8) that the axial was arranged, the inside coaxial arrangement of hush pipe (8) have porous cylindrical plate (7), the outside of porous cylindrical plate (7) and the inside wall of hush pipe (8) between form the amortization inner chamber, the inside packing of this amortization inner chamber has metal fiber layer (5), the coaxial detachable connection pipe (3) that is provided with of one end of hush pipe (8), the one end of detachable connection pipe (3) be provided with end cover (4) that seal the one end of hush pipe (8).

2. The pressure shell integrable resistive muffler structure of claim 1, further characterized by: and a protective layer (6) for preventing metal fibers from penetrating through the porous cylindrical plate (7) is arranged on the outer side of the porous cylindrical plate (7).

3. The pressure shell integrable resistive muffler structure of claim 1, further characterized by: the metal fiber layer (5) is arranged into a single-layer or multi-layer laminated structure.

4. The pressure shell integrable resistive muffler structure of claim 2, further characterized by: the protective layer (6) is a microporous thin plate wrapped outside the porous cylindrical plate (7).

5. The pressure shell integrable resistive muffler structure of claim 1, further characterized by: the inner side wall of the porous cylindrical plate (7) is axially flush with the inner side walls of the airflow connecting pipe (2) and the detachable connecting pipe (3).