CN216044117U

CN216044117U - Air inlet silencer of automobile engine

Info

Publication number: CN216044117U
Application number: CN202122865406.4U
Authority: CN
Inventors: 葛珊; 吴锋
Original assignee: Dongwei Huai'an Hardware Industry Co ltd
Current assignee: Dongwei Huai'an Hardware Industry Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-03-15
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses an air inlet silencing device of an automobile engine, which relates to the technical field of engines and comprises a shell, wherein a fourth cavity is formed in one side of the interior of the shell, a Helmholtz resonator is arranged in the fourth cavity, a second cavity is formed in the shell, a first cavity is formed in the shell, a guide pipe is arranged in the first cavity, a third cavity is formed in one side of the interior of the shell, which is far away from the fourth cavity, a reinforcing structure is arranged at the bottom end of the interior of the third cavity, the reinforcing structure further comprises an installation rod, the installation rod is installed in the middle position of the bottom end of the interior of the third cavity through a bearing, a plurality of installation plates are installed on the outer side of the installation rod, and sound absorption cotton sleeves are installed on the outer sides of the installation plates. The sound absorption cotton sleeve has the sound absorption function, so that residual sound waves transmitted from the guide pipe can be absorbed, and the sound absorption effect of the structure can be improved under the rotation of the sound absorption cotton sleeve.

Description

Air inlet silencer of automobile engine

Technical Field

The utility model relates to the technical field of engines, in particular to an air inlet silencing device of an automobile engine.

Background

The engine can produce more noise at the course of the work, not only influences the passenger in the car, but also influences external environment, in order to reduce the noise that the engine produced, not only needs carry out noise cancelling treatment to the blast pipe, also need carry out corresponding noise cancelling treatment to it in intake pipe department, for the amortization quality that improves the intake pipe, the this case of being convenient for produces.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an air inlet silencing device for an automobile engine, which aims to solve the problem of improving the silencing treatment quality of an air inlet pipe in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an air inlet silencing device of an automobile engine comprises a shell, wherein a fourth cavity is formed in one side of the interior of the shell, a Helmholtz resonator is arranged in the fourth cavity, a second cavity is formed in the shell, a first cavity is formed in the shell, a guide pipe is arranged in the first cavity, a third cavity is formed in one side of the interior of the shell, which is far away from the fourth cavity, and a reinforcing structure is arranged at the bottom end of the interior of the third cavity;

the reinforcing structure further comprises a mounting rod, the mounting rod is mounted in the middle of the bottom end in the third chamber through a bearing, a plurality of mounting plates are mounted on the outer sides of the mounting rod, and sound-absorbing cotton sleeves are mounted on the outer sides of the mounting plates;

the middle position department that the shell is close to fourth cavity one side is provided with the outlet duct, and the top that the shell kept away from fourth cavity one side is provided with the intake pipe, the outside of intake pipe is provided with the active structure.

Preferably, the movable structure still includes pressure-dividing pipe, slider, spout and fly leaf, the pressure-dividing pipe sets up in the indoor portion of third, and the one end of pressure-dividing pipe runs through the intake pipe outside and is linked together with the intake pipe, the spout has all been seted up at the inside both ends of first cavity, and the inside of movable structure is provided with two fly leaves, the slider is all installed at the both ends of fly leaf, and the stable one end of slider runs through the inside one end of first cavity and extends to inside the spout.

Preferably, one end of the helmholtz resonator penetrates through one side of the inside of the fourth chamber and extends into the inside of the second chamber, and the helmholtz resonator and the intake pipe are located at the same height.

Preferably, one end of the air inlet pipe penetrates through one side of the shell and extends into the second chamber, and a plurality of through holes are formed in the outer side of the air inlet pipe in the third chamber.

Preferably, one end of the guide tube penetrates through one end of the interior of the first chamber and extends to the interior of the third chamber, and the other end of the guide tube penetrates through the other end of the interior of the first chamber and extends to the interior of the second chamber.

Preferably, one end of the air outlet pipe penetrates through one side of the shell and extends into the third chamber, and the air outlet pipe is positioned above the guide pipe.

Preferably, the number of the pressure dividing pipes is two, the two pressure dividing pipes are symmetrical about a vertical center axis of the air inlet pipe, and one end of each pressure dividing pipe penetrates through one end inside the third chamber and extends into the first chamber.

Compared with the prior art, the air inlet silencing device for the automobile engine has the following beneficial effects:

the utility model provides an installation rod and a sound absorption cotton sleeve, wherein the installation rod is arranged at the bottom end in a third chamber through a bearing, when a guide pipe transfers gas, the gas enters the third chamber and can firstly impact the sound absorption cotton sleeve to enable the sound absorption cotton sleeve to rotate, the installation rod can be driven to rotate under the rotation of the sound absorption cotton sleeve, and the residual sound waves transmitted by the guide pipe can be absorbed due to the sound absorption function of the sound absorption cotton sleeve, and the sound absorption effect of the structure can be increased under the rotation of the sound absorption cotton sleeve, so that the enhanced sound absorption function of the device can be realized.

Drawings

FIG. 1 is a schematic front sectional view of the present invention;

FIG. 2 is a schematic side view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic top cross-sectional view of the present invention;

fig. 4 is a schematic top enlarged view of the reinforcing structure of the present invention.

In the figure: 1. a housing; 2. a movable structure; 201. a pressure dividing pipe; 202. a slider; 203. a chute; 204. a movable plate; 3. a first chamber; 4. a guide tube; 5. mounting a rod; 6. a sound-absorbing cotton cover; 7. mounting a plate; 8. an air inlet pipe; 9. a second chamber; 10. a third chamber; 11. a through hole; 12. a fourth chamber; 13. a Helmholtz resonator; 14. and an air outlet pipe.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-4, an intake silencer of an automobile engine includes a housing 1, a fourth chamber 12 is disposed at one side inside the housing 1, a helmholtz resonator 13 is disposed inside the fourth chamber 12, a second chamber 9 is disposed inside the housing 1, a first chamber 3 is disposed inside the housing 1, a guide pipe 4 is disposed inside the first chamber 3, a third chamber 10 is disposed at one side of the inside of the housing 1, which is far away from the fourth chamber 12, and a reinforcing structure is disposed at a bottom end inside the third chamber 10;

an air outlet pipe 14 is arranged at the middle position of one side of the shell 1 close to the fourth chamber 12, an air inlet pipe 8 is arranged above one side of the shell 1 far away from the fourth chamber 12, and a movable structure 2 is arranged on the outer side of the air inlet pipe 8;

one end of the helmholtz resonator 13 penetrates through one side of the inside of the fourth chamber 12 and extends into the second chamber 9, and the helmholtz resonator 13 and the air inlet pipe 8 are located at the same height;

one end of the air inlet pipe 8 penetrates through one side of the shell 1 and extends into the second chamber 9, and a plurality of through holes 11 are formed in the outer side of the air inlet pipe 8 in the third chamber 10;

one end of the guide tube 4 penetrates through one end inside the first chamber 3 and extends to the inside of the third chamber 10, and the other end of the guide tube 4 penetrates through the other end inside the first chamber 3 and extends to the inside of the second chamber 9;

one end of the air outlet pipe 14 penetrates through one side of the shell 1 and extends into the third chamber 10, and the air outlet pipe 14 is positioned above the guide pipe 4;

referring to fig. 1-4, the intake silencer of the automobile engine further comprises a reinforcing structure, the reinforcing structure further comprises a mounting rod 5, the mounting rod 5 is mounted at the middle position of the bottom end inside the third chamber 10 through a bearing, a plurality of mounting plates 7 are mounted on the outer side of the mounting rod 5, and a sound-absorbing cotton sleeve 6 is mounted on the outer side of the mounting plates 7;

specifically, as shown in fig. 1 and 4, through being provided with the existence of installation pole 5, because installation pole 5 is installed in the inside bottom of third chamber 10 through the bearing, and when the stand pipe 4 shifts gas, this gas enters into the inside of third chamber 10 and at first can produce the impact to sound absorption cotton cover 6, make and inhale sound cotton cover 6 and take place to rotate, can drive installation pole 5 and rotate under the rotation of inhaling sound cotton cover 6, owing to inhale the sound function that sound cotton cover 6 self has, consequently alright absorb the participation sound wave that the stand pipe 4 transmitted out, and can increase this structure sound absorption effect under the rotation of inhaling sound cotton cover 6, through this alright realize the reinforcing noise cancelling function of this device.

Example 2: the movable structure 2 further comprises a pressure dividing pipe 201, a sliding block 202, a sliding groove 203 and a movable plate 204, the pressure dividing pipe 201 is arranged inside the third chamber 10, one end of the pressure dividing pipe 201 penetrates through the outer side of the air inlet pipe 8 and is communicated with the air inlet pipe 8, the sliding groove 203 is formed in each of two ends of the inside of the first chamber 3, the two movable plates 204 are arranged inside the movable structure 2, the sliding block 202 is arranged at each of two ends of the movable plate 204, and one stable end of the sliding block 202 penetrates through one end of the inside of the first chamber 3 and extends into the sliding groove 203;

the number of the pressure dividing pipes 201 is two, the two pressure dividing pipes 201 are symmetrical about a vertical center axis of the air inlet pipe 8, and one end of each pressure dividing pipe 201 penetrates through one end inside the third chamber 10 and extends into the first chamber 3;

specifically, as shown in fig. 1, fig. 2 and fig. 3, by the existence of the pressure dividing pipe 201, when the device enters gas into the device through the gas inlet pipe 8, part of the gas can be transferred to the inside of the first chamber 3 through the pressure dividing pipe 201, and the gas can be exhausted due to the existence of the through hole 11, so that the movable plate 204 can be driven to move under the action of pressure, the silencing space inside the first chamber 3 can be adjusted under the movement of the movable plate 204, so as to adapt to sound waves with different frequencies, and the silencing effect of the device is increased.

The working principle is as follows: when the device is used, firstly, the generated sound waves are transferred into the device through the air inlet pipe 8, when the sound waves pass through the inside of the first chamber 3, the sound waves with low and medium frequencies can be transferred into the first chamber 3 through the through holes 11 due to the through holes 11, the sound waves move back and forth in the first chamber 3, the friction of a motion space is reduced along with the increase of the sound waves, the sound waves are finally destroyed, the silencing function is achieved, and the silencing effect in the first chamber 3 is improved;

the first innovation point implementation step:

due to the existence of the pressure dividing pipe 201, when the device enters gas into the device through the gas inlet pipe 8, part of the gas can be transferred into the first chamber 3 through the pressure dividing pipe 201, and the gas can be discharged due to the existence of the through hole 11, so that the movable plate 204 can be driven to move under the action of pressure, and the silencing space in the first chamber 3 can be adjusted under the movement of the movable plate 204, so that the silencing device adapts to sound waves with different frequencies, and the silencing effect of the device is improved;

after the sound waves of middle and low frequencies are processed, most of the high-frequency sound waves directly enter the second chamber 9 through the air inlet pipe 8, because one end of the Helmholtz resonator 13 extends to the inside of the second chamber 9, the high-frequency sound waves released by the air inlet pipe 8 can enter the inside of the Helmholtz resonator 13 under the action of the Helmholtz resonator 13, the Helmholtz resonator 13 can bounce through the wall of the resonator in the Helmholtz resonator 13, the opposite sound waves of the same frequency are generated, the high-frequency sound waves can be damaged, then the gas can enter the inside of the third chamber 10 through the guide pipe 4, finally the gas is transferred out through the air outlet pipe 14, in order to increase the silencing quality of the device, the sound waves are prevented from entering the inside of the third chamber 10 due to leakage, and the noise is generated along with the discharge of the air outlet pipe 14;

the implementation step of the second innovation point:

through being provided with installation pole 5's existence, because installation pole 5 is installed in the inside bottom of third chamber 10 through the bearing, and when 4 shift gases at the stand pipe, this gas enters into the inside of third chamber 10 at first can produce the impact to the cotton cover of inhaling sound, make and inhale cotton cover of sound 6 and take place to rotate, inhale the rotation of sound cotton cover 6 down alright drive installation pole 5 and rotate, owing to inhale the sound function of inhaling that cotton cover 6 self has, consequently alright absorb with the participation sound wave that comes out to 4 transmissions of stand pipe, and inhale the sound effect with increasing this structure under the rotation of sound cotton cover 6, through this alright realize the reinforcing noise cancelling function of this device.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile engine silencing device that admits air, includes shell (1), its characterized in that: a fourth cavity (12) is formed in one side of the interior of the shell (1), a Helmholtz resonator (13) is arranged in the fourth cavity (12), a second cavity (9) is formed in the shell (1), a first cavity (3) is formed in the shell (1), a guide pipe (4) is arranged in the first cavity (3), a third cavity (10) is formed in one side of the interior of the shell (1) far away from the fourth cavity (12), and a reinforcing structure is arranged at the bottom end of the interior of the third cavity (10);

the reinforcing structure further comprises a mounting rod (5), the mounting rod (5) is mounted at the middle position of the bottom end in the third chamber (10) through a bearing, a plurality of mounting plates (7) are mounted on the outer side of the mounting rod (5), and a sound-absorbing cotton sleeve (6) is mounted on the outer side of each mounting plate (7);

the middle position of the shell (1) close to one side of the fourth cavity (12) is provided with an air outlet pipe (14), an air inlet pipe (8) is arranged above the shell (1) far away from one side of the fourth cavity (12), and the outer side of the air inlet pipe (8) is provided with a movable structure (2).

2. The intake silencer of the automobile engine according to claim 1, wherein: the movable structure (2) further comprises a pressure dividing pipe (201), a sliding block (202), a sliding groove (203) and a movable plate (204), the pressure dividing pipe (201) is arranged inside the third cavity (10), one end of the pressure dividing pipe (201) penetrates through the outer side of the air inlet pipe (8) and is communicated with the air inlet pipe (8), the sliding groove (203) is formed in the two ends of the inner portion of the first cavity (3), the two movable plates (204) are arranged inside the movable structure (2), the sliding block (202) is installed at the two ends of the movable plate (204), and one end of the sliding block (202) is stabilized and penetrates through the inner end of the first cavity (3) and extends to the sliding groove (203).

3. The intake silencer of the automobile engine according to claim 1, wherein: one end of the Helmholtz resonator (13) penetrates through one side inside the fourth chamber (12) and extends into the second chamber (9), and the Helmholtz resonator (13) and the air inlet pipe (8) are positioned at the same height.

4. The intake silencer of the automobile engine according to claim 1, wherein: one end of the air inlet pipe (8) penetrates through one side of the shell (1) and extends to the interior of the second chamber (9), and a plurality of through holes (11) are formed in the outer side of the air inlet pipe (8) in the third chamber (10).

5. The intake silencer of the automobile engine according to claim 1, wherein: one end of the guide pipe (4) penetrates through one end inside the first cavity (3) and extends to the inside of the third cavity (10), and the other end of the guide pipe (4) penetrates through the other end inside the first cavity (3) and extends to the inside of the second cavity (9).

6. The intake silencer of the automobile engine according to claim 1, wherein: one end of the air outlet pipe (14) penetrates through one side of the shell (1) and extends into the third chamber (10), and the air outlet pipe (14) is positioned above the guide pipe (4).

7. The intake silencer of the automobile engine according to claim 2, wherein: the number of pressure divider pipe (201) is two, and two pressure divider pipe (201) are central symmetry about intake pipe (8) is vertical, the one end of pressure divider pipe (201) runs through the inside one end of third cavity (10) and extends to inside first cavity (3).