Air inlet noise elimination structure of automobile engine

Abstract

The utility model relates to the field of automobile engine air inlet structures, and discloses an automobile engine air inlet noise elimination structure which comprises a buffer box, a noise elimination cavity is formed in one side of the interior of the buffer box, a connecting pipe is fixedly connected to one side of the interior of the noise elimination cavity, and a buffer plate is fixedly connected to the interior of the buffer box through the connecting pipe; a plurality of dispersing holes are formed in one side of the outer wall of the connecting pipe, a plurality of air inlet holes are formed in one side of the side surface of the buffer plate, flow dividing pipes are fixedly connected to the two sides of the side surface of the buffer plate, and a plurality of open holes are formed in one side of the outer wall of each flow dividing pipe; through mutual cooperation of structures such as a connecting pipe, a dispersing hole, a buffer plate, an air inlet hole, a first partition plate, a flow dividing pipe, an open hole and a second partition plate which are arranged in the buffer box, air can be decelerated and expanded step by step, so that the flow speed of the air is reduced, the air is discharged uniformly, noise is effectively reduced, and the purpose of reducing the noise is achieved. And the effect of silencing and reducing noise to a certain extent is achieved.

Description

Technical Field

[0001] The present application relates to the field of automobile engine air intake structures, and in particular to an automobile engine air intake silencer structure. Background Art

[0002] As cars become increasingly popular and growing as a major means of transportation, the noise pollution caused by car noise is becoming more and more serious. Among them, intake noise contributes a large proportion to the noise of the whole vehicle. For small engines, intake noise is sometimes up to 5dB higher than the engine noise, becoming the main noise after exhaust noise.

[0003] The problems existing in the prior art are that the gas flow rate inside the engine is fast, which is easy to generate noise, and the sound of the gas hitting the inner wall of the silencer box is loud and has a high decibel, which greatly causes noise pollution and affects the comfort and mood of the user.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that excessive noise affects the comfort and mood of users, the present application provides an automobile engine intake silencer structure.

[0006] The present application provides an automobile engine intake silencer structure adopting the following technical solution:

[0007] An automobile engine intake silencer structure includes a buffer box, a silencer cavity is provided on one side of the buffer box, a connecting pipe is fixedly connected to one side of the silencer cavity, a buffer plate is fixedly connected to the inside of the buffer box through the connecting pipe, a plurality of dispersion holes are provided on one side of the outer wall of the connecting pipe, a plurality of air intake holes are provided on one side of the side surface of the buffer plate, a shunt pipe is fixedly connected to both sides of the side surface of the buffer plate, and a plurality of openings are provided on one side of the outer wall of the shunt pipe.

[0008] Preferably, the interior of the silencing chamber is fixedly connected with a first partition via the two diverter tubes, and air outlet holes are provided on the side surface of the first partition corresponding to one side of the diverter tube.

[0009] Preferably, guide plates are fixedly connected to both sides of the side surface of the first partition, and the interior of the silencing chamber is fixedly connected to a second partition via the two guide plates.

[0010] Preferably, a plurality of second silencer holes are provided on both sides of the side surface of the second partition plate, and a first silencer hole is provided at the center of the side surface of the second partition plate.

[0011] Preferably, one side of the side surface of the buffer box is fixedly connected to an air inlet bellows, and the side surface of the buffer box corresponding to the side of the air inlet bellows is fixedly connected to an air outlet bellows.

[0012] Preferably, both sides of the outer wall of the buffer box are fixedly connected with positioning pins

[0013] Preferably, the inner wall of the buffer box is filled with sound-absorbing cotton.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. The connecting pipe, dispersion hole, buffer plate, air inlet, first baffle, shunt pipe, opening and second baffle arranged inside the buffer box cooperate with each other to slow down the gas and expand it step by step, so that the gas flow rate is reduced and discharged evenly, effectively reducing the noise; compared with the existing technology, it has a certain degree of noise reduction effect, which can ensure the comfort and mood of the user;

[0016] 2. By connecting the air inlet bellows, the air outlet bellows and the buffer box, the air flow rate is reduced, and by filling the buffer box with sound-absorbing cotton, the air flow is silenced to a certain extent; compared with the existing technology, it has a certain degree of noise absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the engine intake silencer structure of the embodiment of the application;

[0018] Figure 2 is a schematic structural diagram of a cross-section of an engine intake silencer structure in a front view of an embodiment of the application;

[0019] Figure 3 is a schematic diagram of a cross-sectional top view of an engine intake silencer structure of an embodiment of the application;

[0020] Figure 4 It is a structural schematic diagram of the engine intake silencer structure cross section of the application embodiment.

[0021] Explanation of the reference numerals: 1. Buffer box; 2. Positioning pin; 3. Inlet bellows; 4. Outlet bellows; 5. Connecting pipe; 6. Dispersion hole; 7. Buffer plate; 8. Inlet hole; 9. First partition plate; 10. Diverter pipe; 11. Opening hole; 12. Guide plate; 13. Second partition plate; 14. Silence chamber; 15. Sound-absorbing cotton; 16. Outlet hole; 17. First silencing hole; 18. Second silencing hole. DETAILED DESCRIPTION

[0022] The following is combined with Figure 1-4 This application is described in further detail.

[0023] The present application embodiment discloses a vehicle engine intake silencer structure. Figure 2 and Figure 3 and Figure 4 A car engine intake silencer structure, a buffer box 1 has a silencer cavity 14 formed on one side thereof, a connecting pipe 5 is fixedly connected to the silencer cavity 14 through one side thereof, a buffer box 1 has a buffer plate 7 fixedly connected to the buffer plate 1 through the connecting pipe 5, a plurality of dispersion holes 6 are formed on the outer wall of the connecting pipe 5 through one side thereof, a plurality of air inlet holes 8 are formed on the side surface of the buffer plate 7 through one side thereof, a shunt pipe 10 is fixedly connected to the side surface of the buffer plate 7 through both sides thereof, and a plurality of openings 11 are formed on the outer wall of the shunt pipe 10 through one side thereof;

[0024] By adopting the above technical solution, by installing the connecting pipe 5 at the air inlet of the silencer chamber 14 inside the buffer box 1, a plurality of dispersion holes 6 are opened on the outer wall of the connecting pipe 5, so that the airflow entering the buffer box 1 diffuses outward along the dispersion holes 6 when passing through the inner wall of the connecting pipe 5, and the buffer plate 7 is connected to the connecting pipe 5, and a plurality of air inlet holes 8 are opened on the outer wall of the buffer plate 7, so that the airflow moves backward through the air inlet holes 8, thereby dispersing the airflow, and the first partition plate 9 corresponds to the buffer plate 7, so that when the airflow moves backward, the airflow is dispersed by the first partition plate 9. A certain buffering is achieved by buffering, turbulently dispersing the airflow, so that the flow rate of the airflow inside the silencer chamber 14 is reduced, thereby reducing the noise generated by the airflow flowing inside the buffer box 1. Subsequently, two diverter pipes 10 are arranged on the outer wall of the first partition plate 9, and a plurality of openings 11 are opened on the outer wall of the diverter pipe 10, so that the airflow can be concentrated inside the diverter pipe 10 and move backward. Through the setting of the two diverter pipes 10, the airflow is divided into two parts and flows backward, achieving the effect of facilitating the buffering, turbulent dispersion of the airflow, reducing the flow rate and reducing noise.

[0025] Reference Figure 2 and Figure 3 and Figure 4 The interior of the silencer chamber 14 is fixedly connected to a first baffle plate 9 through two shunt pipes 10, and an air outlet hole 16 is provided on the side surface of the first baffle plate 9 through one side of the corresponding shunt pipe 10, and a guide plate 12 is fixedly connected to the side surface of the first baffle plate 9 through both sides thereof, and the interior of the silencer chamber 14 is fixedly connected to a second baffle plate 13 through two guide plates 12, and a plurality of second silencer holes 18 are provided on the side surface of the second baffle plate 13 through both sides thereof, and a first silencer hole 17 is provided on the side surface of the second baffle plate 13 through its center position;

[0026] By adopting the above technical scheme, the air outlet 16 on the outer wall of the first partition 9 is matched with the diverter pipe 10, so that the two parts of the air flow move backward through the air outlet 16 respectively, and the air flow is guided by two guide plates 12. The first partition 9 and the second partition 13 are connected by the two guide plates 12, so that the air flow is guided to the position of the first silencer hole 17 and the second silencer hole 18, and the guided air flow is dispersed again by the second partition 13, the first silencer hole 17 and a plurality of second silencer holes 18, so that the air flow is buffered and turbulently dispersed for the second time, and the flow rate is reduced, thereby reducing the speed of the gas impacting the inner wall of the buffer box 1, and effectively reducing the sound of the gas hitting the inner wall of the buffer box 1, so as to achieve the effect of eliminating the noise generated by the engine intake.

[0027] Reference Figure 1 , Figure 2 and Figure 3 An air inlet bellows 3 is fixedly connected to one side of the side surface of the buffer box 1, an air outlet bellows 4 is fixedly connected to the side of the side surface of the buffer box 1 corresponding to the air inlet bellows 3, positioning pins 2 are fixedly connected to both sides of the outer wall of the buffer box 1, and the inner wall of the buffer box 1 is filled with sound-absorbing cotton 15;

[0028] By adopting the above technical scheme, the buffer box 1 can be easily installed in the car through the positioning pins 2 set on both sides of the outer wall of the buffer box 1, and the air intake bellows 3 and the air outlet bellows 4 at both ends of the buffer box 1 are respectively connected to the car engine and the air intake pipe. The air flow path can be extended by setting the air intake bellows 3 and the air outlet bellows 4. By setting the air intake bellows 3 and the air outlet bellows 4 to an S shape, the airflow is buffered and the airflow movement rate is reduced. The sound-absorbing cotton 15 filled in the buffer box 1 is asbestos, which reduces noise pollution to a certain extent.

[0029] The implementation principle of an automobile engine intake silencer structure in the embodiment of the present application is as follows: first, the positioning pins 2 arranged on both sides of the outer wall of the buffer box 1 facilitate the installation of the buffer box 1 inside the automobile, and the intake bellows 3 and the outlet bellows 4 at both ends of the buffer box 1 are respectively connected to the automobile engine and the intake pipe. Subsequently, the connecting pipe 5 is installed at the air inlet of the silencer cavity 14 inside the buffer box 1, and a plurality of dispersion holes 6 are opened on the outer wall of the connecting pipe 5, so that the airflow entering the buffer box 1 diffuses outward along the dispersion holes 6 when passing through the inner wall of the connecting pipe 5, and is connected between the buffer plate 7 and the connecting pipe 5, and a plurality of air intake holes 8 are opened on the outer wall of the buffer plate 7, so that the airflow moves backward through the air intake holes 8, thereby dispersing the airflow, and the first baffle plate 9 corresponds to the buffer plate 7, so that when the airflow moves backward, the airflow is buffered by the first baffle plate 9 to a certain extent, and the airflow is buffered and dispersed by the buffering, turbulence and flow dispersion, so that the flow rate of the airflow inside the silencer cavity 14 is reduced, thereby reducing the noise generated by the airflow inside the buffer box 1. At the same time, two shunt pipes 10 are arranged on the outer wall of the first partition plate 9, and a plurality of openings 11 are provided on the outer wall of the shunt pipe 10, so that the airflow is concentrated inside the shunt pipe 10 and moves backward. The two shunt pipes 10 are arranged so that the airflow is divided into two parts and flows backward. The air outlet holes 16 on the outer wall of the first partition plate 9 correspond to the shunt pipe 10, so that the two parts of the airflow move backward through the air outlet holes 16 respectively. The airflow is guided by two guide plates 12, and the two guide plates are used to guide the airflow. The plate 12 connects the first partition plate 9 and the second partition plate 13, so that the airflow is guided to the positions of the first silencer hole 17 and the second silencer hole 18, and the guided airflow is dispersed again through the second partition plate 13, the first silencer hole 17 and a plurality of second silencer holes 18. The airflow is buffered and turbulently dispersed twice to reduce the flow rate, thereby reducing the speed of the gas impacting the inner wall of the buffer box 1 twice, reducing noise pollution to a certain extent, and facilitating the elimination of the noise generated by the engine intake.

[0030] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0031] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0033] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automobile engine intake silencer structure, comprising a buffer box (1), characterized in that: A silencer chamber (14) is provided on one side of the interior of the buffer box (1), a connecting pipe (5) is fixedly connected to one side of the interior of the silencer chamber (14), a buffer plate (7) is fixedly connected to the interior of the buffer box (1) via the connecting pipe (5), a plurality of dispersion holes (6) are provided on one side of the outer wall of the connecting pipe (5), a plurality of air inlet holes (8) are provided on one side of the side surface of the buffer plate (7), a flow diversion pipe (10) is fixedly connected to both sides of the side surface of the buffer plate (7), and a plurality of openings (11) are provided on one side of the outer wall of the flow diversion pipe (10).

2. The automobile engine intake silencer structure according to claim 1, characterized in that: The interior of the muffler chamber (14) is fixedly connected to a first partition plate (9) via two diverter pipes (10), and a side surface of the first partition plate (9) corresponding to one side of the diverter pipe (10) is provided with an air outlet hole (16).

3. The automobile engine intake silencer structure according to claim 2, characterized in that: Guide plates (12) are fixedly connected to both sides of the side surface of the first baffle (9), and the interior of the muffler cavity (14) is fixedly connected to a second baffle (13) via two of the guide plates (12).

4. The automobile engine intake silencer structure according to claim 3, characterized in that: A plurality of second silencer holes (18) are provided on both sides of the side surface of the second partition plate (13), and a first silencer hole (17) is provided at the center of the side surface of the second partition plate (13).

5. The automobile engine intake silencer structure according to claim 1, characterized in that: An air inlet bellows (3) is fixedly connected to one side of the side surface of the buffer box (1), and an air outlet bellows (4) is fixedly connected to the side of the side surface of the buffer box (1) corresponding to the air inlet bellows (3).

6. The automobile engine intake silencer structure according to claim 1, characterized in that: Positioning pins (2) are fixedly connected to both sides of the outer wall of the buffer box (1).

7. The automobile engine intake silencer structure according to claim 1, characterized in that: The inner wall of the buffer box (1) is filled with sound-absorbing cotton (15).

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