CN216477577U

CN216477577U - Engine noise reduction device

Info

Publication number: CN216477577U
Application number: CN202122929539.3U
Authority: CN
Inventors: 贺鲁山
Original assignee: Shandong Zhongchi Power Technology Co ltd
Current assignee: Shandong Zhongchi Power Technology Co ltd
Priority date: 2021-11-26
Filing date: 2021-11-26
Publication date: 2022-05-10
Anticipated expiration: 2031-11-26

Abstract

The utility model is suitable for the technical field of engines, and provides an engine noise reduction device, which comprises a box body, wherein a cavity is arranged in the box body, a first pipeline is arranged above one side of the box body in a penetrating manner, the first pipeline is connected with an engine, a first baffle is arranged in the box body and is right opposite to the output end side of the first pipeline, a first sound absorption sponge cushion is arranged on one side of the first baffle opposite to the first pipeline, a second baffle is arranged in the box body and is positioned below the first pipeline, the second baffle is obliquely arranged, a second sound absorption sponge cushion is arranged on the top surface of the second baffle, a first connecting pipe is arranged on one side of the first baffle in the box body, compared with the prior art, a Chinese patent with the application number of 201621142864.8 provides a noise reduction device applied to an automobile engine, but the device has poor noise reduction effect and defects, the utility model greatly increases the noise reduction effect and is convenient to use.

Description

Engine noise reduction device

Technical Field

The utility model belongs to the technical field of engines, and particularly relates to an engine noise reduction device.

Background

An engine is a machine capable of converting other forms of energy into mechanical energy, and includes, for example, an internal combustion engine (reciprocating piston engine), an external combustion engine (stirling engine, steam engine, etc.), a jet engine, an electric motor, etc., and for example, an internal combustion engine is generally used to convert chemical energy into mechanical energy, and the engine is suitable for both a power generation device and an entire machine including a power device (e.g., a gasoline engine, an aircraft engine).

The Chinese patent with the application number of 201621142864.8 and the patent name of 'a noise-reducing and vibration-preventing device for an automobile engine' provides a noise-reducing and vibration-preventing device applied to the automobile engine, but the device has the defects of poor noise-reducing effect on the engine and inconvenient use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an engine noise reduction device, which aims to solve the problems that in the prior art, a Chinese patent with the application number of 201621142864.8 provides a noise reduction and vibration prevention device applied to an automobile engine, but the device has poor noise reduction effect, has defects and is inconvenient to use.

In order to achieve the purpose, the utility model provides the following technical scheme: an engine noise reduction device comprises a box body, wherein a cavity is arranged in the box body, a first pipeline is arranged above one side of the box body in a penetrating mode, the first pipeline is connected with an engine, a first baffle is arranged in the box body just opposite to one side of the output end of the first pipeline, a first sound absorption sponge cushion is arranged on one side, opposite to the first pipeline, of the first baffle, a second baffle is arranged below the first pipeline in the box body, the second baffle is obliquely arranged, a second sound absorption sponge cushion is arranged on the top surface of the second baffle, a first connecting pipe is arranged on one side, opposite to the first pipeline, of the box body, a second connecting pipe is arranged on one side of the first connecting pipe, connecting rods are symmetrically arranged between the side walls of the first connecting pipe and the second connecting pipe and the inner wall of the box body, and sound absorption sponge pipes are connected between the first connecting pipe and the second connecting pipe, one end of the second connecting pipe is provided with a second pipeline, and the second pipeline penetrates through the box body and extends to the outside.

Preferably, the two ends of the sound-absorbing sponge pipe are respectively sleeved on the first connecting pipe and the second connecting pipe, and the top surface and the bottom surface of the sound-absorbing sponge pipe are flush with the first connecting pipe and the second connecting pipe.

Preferably, the inner wall of the box body is provided with insections.

Preferably, the inner walls of the first connecting pipe and the second connecting pipe are provided with a plurality of inclined plates, and the inclined plates are distributed in an annular array.

Preferably, a corrugated pipe is arranged between the second connecting pipe and the second pipeline.

The utility model has at least the following beneficial effects:

first pipeline transmits the sound of engine work to the inside of box, sound foam pad 14 is inhaled to first sound of inhaling 4 and the second sound foam pad of inhaling absorbs part of sound and falls the noise, first baffle and second baffle are led the sound wave, reduce sound wave vibration frequency and amplitude, the sound entering of being led is inhaled in the sound foam pad pipe through first connecting pipe entering, absorb once more and fall the noise, then get into the second connecting pipe, discharge via the second pipeline, for among the prior art, application number 201621142864.8's chinese patent has provided the shockproof device of making an uproar that falls who is applied to automobile engine, but this kind of device noise reduction effect is relatively poor, the defect exists, the problem of inconvenient use, greatly increased the effect of making an uproar that falls in this scheme, and convenient use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the connection of a first connecting pipe and a sound absorbing sponge pipe according to the present invention;

fig. 3 is a schematic view of the internal structure of the first connection pipe in the present invention.

In the reference symbols: 1. a box body; 2. a first conduit; 3. a first baffle plate; 4. a first sound absorbing sponge cushion; 5. insection; 6. a first connecting pipe; 7. a second connecting pipe; 8. a sound absorbing sponge tube; 9. a bellows; 10. a second conduit; 11. a connecting rod; 12. an inclined plate; 13. a second baffle; 14. the second sound-absorbing sponge cushion.

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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: a noise reduction device of an engine comprises a box body 1, wherein a cavity is arranged in the box body 1, a first pipeline 2 is arranged above one side of the box body 1 in a penetrating mode, specifically, the first pipeline 2 is fixedly connected with the box body 1, the first pipeline 2 is connected with the engine, a first baffle 3 is arranged in the box body 1 and just faces to one side of the output end of the first pipeline 2, specifically, the first baffle 3 is fixedly connected with the box body 1, a first sound absorption sponge cushion 4 is arranged on one side, opposite to the first pipeline 2, of the first baffle 3, specifically, the first sound absorption sponge cushion 4 is fixedly connected with the first baffle 3, a second baffle 13 is arranged in the box body 1 and is arranged below the first pipeline 2, the second baffle 13 is obliquely arranged, specifically, two ends of the second baffle 13 are fixedly connected with the box body 1, a second sound absorption sponge cushion 14 is arranged on the top surface of the second baffle 13, specifically, the second sound absorption sponge cushion 14 is fixedly connected with the second baffle 13, one side that the inside of box 1 is located first baffle 3 is equipped with first connecting pipe 6, one side of first connecting pipe 6 is equipped with second connecting pipe 7, equal symmetry is equipped with connecting rod 11 between the lateral wall of first connecting pipe 6 and second connecting pipe 7 and the inner wall of box 1, and is concrete, connecting rod 11 respectively with the lateral wall fixed connection of first connecting pipe 6 and second connecting pipe 7, and with the inner wall fixed connection of box 1, be connected with between first connecting pipe 6 and the second connecting pipe 7 and inhale sound sponge pipe 8, the one end of second connecting pipe 7 is equipped with second pipeline 10, second pipeline 10 runs through box 1, and extend to the outside, and is concrete, second pipeline 10 and box 1 fixed connection.

In this embodiment, the first pipeline 2 transmits the sound of engine operation to the inside of box 1, the first sound absorption foam cushion 4 just facing the output end of the first pipeline 2 absorbs and reduces noise for part of sound, and the first baffle 3 guides sound, reduce sound wave vibration frequency and amplitude, the sound that is guided transmits to second baffle 13 department, the sound that is guided again, reduce sound wave vibration frequency and amplitude, the in-process second sound absorption foam cushion 14 absorbs and reduces noise for part of sound, the sound that is guided gets into first connecting pipe 6, get into sound absorption foam pipe 8 through first connecting pipe 6, absorb and reduce noise again, then get into second connecting pipe 7, discharge via second pipeline 10.

Further, both ends of the sound-absorbing sponge pipe 8 are respectively fitted over the first connection pipe 6 and the second connection pipe 7, and the top surface and the bottom surface of the sound-absorbing sponge pipe 8 are kept flush with the first connection pipe 6 and the second connection pipe 7.

In this embodiment, the two ends of the sound absorption sponge pipe 8 are respectively sleeved on the first connecting pipe 6 and the second connecting pipe 7, so that the sound absorption sponge pipe 8 can be conveniently mounted and dismounted, the sound absorption sponge pipe 8 can be conveniently replaced, and the top surface and the bottom surface of the sound absorption sponge pipe 8 are flush with the first connecting pipe 6 and the second connecting pipe 7, so that the appearance is attractive.

Furthermore, the inner wall of the box body 1 is provided with insections 5.

In the present embodiment, the frequency and amplitude of the vibration of the sound wave are reduced by the insections 5, thereby assisting sound absorption and noise reduction.

Furthermore, the inner walls of the first connecting pipe 6 and the second connecting pipe 7 are provided with a plurality of inclined plates 12, and the plurality of inclined plates 12 are distributed in an annular array.

In the present embodiment, the provision of the inclined plate 12 reduces the frequency and amplitude of vibration of sound waves, thereby assisting sound absorption and noise reduction.

Further, a corrugated pipe 9 is arranged between the second connecting pipe 7 and the second pipeline 10, and specifically, the corrugated pipe 9 is sleeved on the second connecting pipe 7 and the second pipeline 10.

In the present embodiment, the bellows 9 is provided between the second connection pipe 7 and the second pipe 10, facilitating the connection of the second connection pipe 7 and the second pipe 10.

The working principle and the using process of the utility model are as follows: after the engine noise reduction device is installed, the first pipeline 2 transmits the working sound of the engine to the inside of the box body 1, the first sound absorption sponge cushion 4 which is over against the output end of the first pipeline 2 absorbs and reduces noise of partial sound, the first baffle plate 3 guides the sound, the guided sound is transmitted to the second baffle plate 13 and is guided again, the second sound absorption sponge cushion 14 absorbs and reduces noise of partial sound, the guided sound enters the first connecting pipe 6, enters the sound absorption sponge pipe 8 through the first connecting pipe 6, is absorbed and reduced noise again, then enters the second connecting pipe 7 and is discharged through the second pipeline 10, and in the process, the insection 5 and the inclined plate 12 reduce the frequency and amplitude of sound wave vibration to perform auxiliary noise reduction.

Having shown and described the basic principles and essential features of the utility model and its advantages, it will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof, and it is therefore intended that the embodiments be considered as illustrative and not restrictive in all respects, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, any reference signs in the claims being therefore intended to be embraced therein.

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 engine noise reduction device is characterized by comprising a box body (1), wherein a cavity is arranged in the box body (1), a first pipeline (2) penetrates through the upper portion of one side of the box body (1), the first pipeline (2) is connected with an engine, a first baffle (3) is arranged in the box body (1) just opposite to one side of the output end of the first pipeline (2), a first sound absorption sponge cushion (4) is arranged on one side, opposite to the first pipeline (2), of the first baffle (3), a second baffle (13) is arranged below the first pipeline (2) in the box body (1), the second baffle (13) is obliquely arranged, a second sound absorption sponge cushion (14) is arranged on the top surface of the second baffle (13), a first connecting pipe (6) is arranged on one side, opposite to the first baffle (3), of the first connecting pipe (6), a second connecting pipe (7) is arranged on one side of the first connecting pipe (6), equal symmetry is equipped with connecting rod (11) between the lateral wall of first connecting pipe (6) and second connecting pipe (7) and the inner wall of box (1), be connected with between first connecting pipe (6) and second connecting pipe (7) and inhale sound sponge pipe (8), the one end of second connecting pipe (7) is equipped with second pipeline (10), second pipeline (10) run through box (1), and extend to the outside.

2. The engine noise reduction apparatus according to claim 1, wherein: the both ends of inhaling sound sponge pipe (8) are established respectively on first connecting pipe (6) and second connecting pipe (7), the top surface and the bottom surface and first connecting pipe (6) and second connecting pipe (7) of inhaling sound sponge pipe (8) keep the parallel and level.

3. The engine noise reduction apparatus according to claim 1, wherein: the inner wall of the box body (1) is provided with insections (5).

4. The engine noise reduction apparatus according to claim 1, wherein: the inner walls of the first connecting pipe (6) and the second connecting pipe (7) are respectively provided with a plurality of inclined plates (12), and the inclined plates (12) are distributed in an annular array.

5. The engine noise reduction apparatus according to claim 1, wherein: a corrugated pipe (9) is arranged between the second connecting pipe (7) and the second pipeline (10).