CN217152150U - Automobile air inlet silencer - Google Patents

Abstract

The utility model relates to a car silencer that admits air, including silencer casing and a plurality of noise elimination unit, the silencer casing is including outlet duct, installation cavity and the intake pipe that connects gradually, a plurality of noise elimination units set up in the installation cavity after docking in proper order, and the noise elimination frequency range of every noise elimination unit staggers mutually, and a continuous district section is constituteed to the noise elimination frequency of all noise elimination units. Compared with the prior art, the utility model has the advantages of.

Description

Automobile air inlet silencer

Technical Field

The utility model belongs to the technical field of the car technique and specifically relates to a car silencer that admits air is related to.

Background

With the upgrade of the driving experience of the user, the noise in the vehicle is more and more emphasized. Intake noise is one of the important sources of noise in the vehicle, and therefore, the intake system is endowed with a new function: and (5) noise reduction.

In the prior art, a single porous silencer is generally adopted as an air inlet silencer in an automobile, but the silencing effect of the air inlet silencer is difficult to ensure due to the difference of sound transmission loss of different automobile types; if the silencers with different models are customized according to the model of the automobile, the development cost is increased, and the universality is poor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automobile air inlet silencer for overcoming the defects of the prior art.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides an automobile air inlet silencer, includes silencer casing and a plurality of noise elimination unit, the silencer casing is including the outlet duct, installation cavity and the intake pipe that connect gradually, a plurality of noise elimination units set up in the installation cavity after docking in proper order, and the noise elimination frequency range of every noise elimination unit staggers each other, and the noise elimination frequency of all noise elimination units constitutes a continuous district section.

Further, the plurality of silencing units are one or more combinations of resonant cavity tubes, wavelength tubes or porous silencing tubes.

Furthermore, a step inner cavity surface is arranged in the installation cavity, a plurality of baffle plates arranged in parallel are arranged on each silencing unit, and when the silencing units are fixed in the cavities, one side surface of each baffle plate abuts against one step side wall of the step inner cavity surface.

Further, the number of the noise elimination units is 2-5.

Furthermore, the air outlet pipeline and the installation cavity are of an integrated structure, and the air inlet pipe is detachably connected with the installation cavity; or the air inlet pipe and the installation cavity are of an integrated structure, and the air outlet pipe is detachably connected with the installation cavity.

Further, the silencing frequency range of the silencing unit is sequentially reduced from the air outlet pipe to the air inlet pipe.

Furthermore, the outer side of the mounting cavity is provided with a support lug.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses a set up the noise elimination unit of different combinations in the silencer casing, adjust different sound transmission loss, the various motorcycle types of adaptation realize the universalization and the reduce cost of silencer.

2. The step inner cavity surface is arranged in the installation cavity to fix the silencing unit, so that the assembly mode is simple and the stability is good.

3. The silencer shell adopts a two-section split structure, so that the silencer is easy to install and convenient to operate.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic cross-sectional view of the first embodiment.

Fig. 3 is an exploded view of the first embodiment.

Fig. 4 is a schematic cross-sectional view of the second embodiment.

Fig. 5 is an exploded view of the second embodiment.

Reference numerals: 1. the silencer comprises a silencer shell, 11, an air outlet pipe, 12, an installation cavity, 12a, a step inner cavity surface, 13, an air inlet pipe, 14, a support lug, 2, a silencing unit, 21 and a baffle plate.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example one

As shown in fig. 1 to 3, the present embodiment provides an intake silencer for an automobile, including a silencer housing 1 and a plurality of silencing units 2. The muffler shell 1 comprises an air outlet pipe 11, a mounting cavity 12 and an air inlet pipe 13 which are connected in sequence.

Wherein, silencer casing 1 sets up to two segmentations' dismantled and assembled structure for inside noise elimination unit of easy to assemble from this, generally is outlet duct 11 and installation cavity 12 formula structure as an organic whole, and installation cavity 12 is connected to the detachable connection of intake pipe 13. The detachable connection is conventional bolt, buckle, interference fit connection and the like, and is not specifically unfolded. The two-section type detachable structure can also be an integrated structure of the air inlet pipe 13 and the installation cavity 12, and the air outlet pipe 11 is detachably connected with the installation cavity 12. In this embodiment, the muffler housing 1 adopts the first division manner. In another embodiment, the muffler shell 1 may be divided into two parts welded to each other to improve strength and sealing performance. A lug 14 is arranged outside the mounting cavity 12 and used for fixing the air inlet silencer in the vehicle body.

A plurality of noise elimination unit 2 set up in installation cavity 12 after docking in proper order, specifically expand to be: a stepped inner cavity surface 12a is arranged in the mounting cavity 12; the body of the silencing unit 2 is an existing resonance cavity pipe, a wave pipe or a porous silencing pipe and the like, and the silencing unit 2 is provided with a plurality of baffles 21 which are arranged in parallel on an existing foundation structure; when the sound attenuation unit 2 is fixed in the mounting cavity, one side surface of the baffle plate 21 abuts against one step side wall of the step inner cavity surface 12 a. The plurality of silencing units 2 are one or more combinations of resonant cavity tubes, wavelength tubes or porous silencing tubes, and the porous silencing tubes are all adopted in the embodiment.

The number of the silencing units 2 is generally 2-5, and in order to achieve the best effect, three silencing units 2 are adopted in the embodiment. The reason is as follows: when two silencing units 2 are provided, the frequency of each corresponding silencing unit 2 is too wide, which is not beneficial to adjustment; when the number of the silencing units 2 is larger than three, each silencing unit 2 has factors such as manufacturing errors and assembly errors, and the silencing device has risks such as squeaking and cavity channeling due to frequency.

In the embodiment, the frequency of the whole air inlet silencer is 800Hz-8000Hz, the silencing frequencies of the three porous silencing pipes are 5000Hz-8000Hz, 1500Hz-5000Hz and 800Hz-1500Hz from the air outlet pipe 11 to the air inlet pipe 13 in sequence, namely the silencing frequency ranges of all the silencing units 2 are staggered, and the silencing frequencies of all the silencing units 2 form a continuous section. Therefore, the muffler unit 2 with different combinations is arranged in the muffler shell 1, so that different sound transmission losses are adjusted, the muffler is suitable for various vehicle types, and the universality and the cost reduction of the muffler are realized.

Example two

As shown in fig. 4 and 5, the basic structure of the present embodiment is the same as that of the first embodiment, and the difference is that: the three silencing units 2 sequentially adopt two porous silencing pipes and a resonance cavity pipe from the air outlet pipe 11 to the air inlet pipe 13, and the silencing frequencies are sequentially set to be 5000Hz-8000Hz, 1500Hz-5000Hz and 8000Hz-10000Hz, so that the frequency of the integral silencer is changed into 1500Hz-10000 Hz.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the principles of this invention without the use of inventive faculty. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (7)

1. A car air intake muffler, characterized in that it comprises a muffler housing (1) and a plurality of muffler units (2), the muffler housing (1) comprising an outlet pipe (11), an installation cavity connected in sequence (12) and the air intake pipe (13), the multiple muffler units (2) are arranged in the installation cavity (12) after being connected in sequence, the muffler frequency ranges of each muffler unit (2) are staggered from each other, and all muffler units (2) are arranged in the installation cavity (12). The silencing frequency of the sound unit (2) forms a continuous interval. 2 . The vehicle air intake muffler according to claim 1 , wherein the plurality of muffler units ( 2 ) are one or more combinations of resonant cavity tubes, wavelength tubes or porous muffler tubes. 3 . 3. An automobile air intake muffler according to claim 1, characterized in that, a stepped inner cavity surface (12a) is provided in the installation cavity (12), and each muffler unit (2) is provided with a plurality of There are two parallel baffles (21), and when the muffler unit (2) is fixed in the cavity, one side surface of the baffle (21) abuts on a stepped side wall of the stepped inner cavity surface (12a). 4 . The vehicle air intake muffler according to claim 1 , wherein the number of the muffler units ( 2 ) is 2 to 5. 5 . 5. An automobile air intake muffler according to claim 1, characterized in that the air outlet pipe (11) and the installation cavity (12) are of an integrated structure, and the air intake pipe (13) is detachably connected an installation cavity (12); or the air inlet pipe (13) and the installation cavity (12) are of an integrated structure, and the air outlet pipe (11) is detachably connected to the installation cavity (12). 6 . The vehicle air intake muffler according to claim 1 , wherein the muffler frequency range of the muffler unit ( 2 ) decreases sequentially from the air outlet pipe ( 11 ) to the air intake pipe ( 13 ). 7 . 7 . The automobile air intake muffler according to claim 1 , wherein a support lug ( 14 ) is provided on the outer side of the installation cavity ( 12 ). 8 .

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