CN115199378B

CN115199378B - Silencing air duct of engine

Info

Publication number: CN115199378B
Application number: CN202210783246.5A
Authority: CN
Inventors: 李恩福
Original assignee: Dongguan Inoac Kenjou Automotive Co Ltd
Current assignee: Dongguan Inoac Kenjou Automotive Co Ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2023-05-02
Anticipated expiration: 2042-07-05
Also published as: CN115199378A

Abstract

The invention discloses an engine silencing air pipe in the technical field of silencing air pipes, which comprises an air pipe body, wherein a connecting pipe communicated with the air pipe body is fixedly arranged on the side wall of the air pipe body, an expansion chamber is fixedly connected to one end of the connecting pipe away from the air pipe body, a first resonance chamber, a second resonance chamber and a third resonance chamber which are communicated with the connecting pipe are respectively fixedly arranged on the side wall of the air pipe body, a filtering mechanism and an air guide mechanism are arranged on the inner wall of the air pipe body in a clamping mode, the filtering mechanism comprises a filtering pipe which is arranged on the inner wall of the air pipe body in a clamping mode, a filter plate is fixedly arranged at one end, close to the air guide mechanism, of the inner wall of the filtering pipe, a plurality of double-end funnels which are communicated with the filtering mechanism and correspond to the first resonance chamber, the second resonance chamber and the third resonance chamber in a one-to-one mode are fixedly arranged on the outer wall of the filtering mechanism, and annular filter windows are fixedly arranged on the inner walls of the double-end funnels positioned in the filtering pipe, so that unfiltered tail gas enters the silencing air pipe, impurities contained in the tail gas are adsorbed in the silencing air pipe, and the silencing performance of a silencer device can be influenced.

Description

Silencing air duct of engine

Technical Field

The invention relates to the technical field of silencing air pipes, in particular to an engine silencing air pipe.

Background

Noise is mixed in tail gas generated during operation of the engine, and the noise usually generates huge discomfort to a human body, and a silencing air pipe is arranged on an engine exhaust pipe, so that the noise mixed in the tail gas during operation of the engine can be greatly reduced, pollution caused by the noise is furthest reduced, and the health of the human body is protected.

The existing silencing branch pipe of the automobile engine mainly comprises a resistant silencing air pipe, when various silencing units such as an expansion chamber, a resonance chamber and the like are formed inside the silencing branch pipe through parts such as a pipeline, a partition plate and the like, sound waves are reflected and interfered during propagation, and the sound energy is reduced to achieve the silencing purpose.

However, when the resistant silencing air pipe is used for silencing, unfiltered tail gas enters the silencing air pipe, impurities (carbon deposition) and the like contained in the tail gas are adsorbed in the silencing air pipe, and the silencing performance of the silencer device can be affected.

Therefore, in order to solve the above-described problems, an engine silencing air duct is required.

Disclosure of Invention

The present invention is directed to providing an engine muffler air duct to solve the above-mentioned problems.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the engine silencing air pipe comprises an air pipe body, wherein a connecting pipe communicated with the air pipe body is fixedly arranged on the side wall of the air pipe body, an expansion chamber is fixedly connected to one end of the connecting pipe, which is far away from the air pipe body, and a resonance chamber I, a resonance chamber II and a resonance chamber III which are communicated with the air pipe body are respectively fixedly arranged on the side wall of the air pipe body;

the utility model discloses a filter unit, including tuber pipe body inner wall card, filter unit and air guide mechanism fixed connection, filter unit is including the filter tube of card locating tuber pipe main part inner wall, the filter tube inner wall is close to air guide mechanism's one end fixed be equipped with the filter plate, filter unit outer wall is fixed be equipped with rather than the intercommunication and with resonant chamber one, resonant chamber two and resonant chamber three one-to-one a plurality of double-end funnels, be located a plurality of in the filter tube the annular filter window is all fixed to double-end funnel inner wall, the filter tube lateral wall is provided with actuating mechanism, a plurality of be equipped with pumping mechanism in the double-end funnels.

Preferably, the driving mechanism comprises a motor fixed on the side wall of the filter tube, a rotating rod is fixedly arranged at the output end of the motor, one end of the rotating rod, far away from the motor, penetrates through the double-headed funnels to one end of the filter tube, far away from the motor, and a plurality of rotating rod bodies in the double-headed funnels are fixedly sleeved with a driving bevel gear.

Preferably, the suction mechanism comprises a linkage rod which is sleeved on the annular filter window in a rotating mode, one end, close to the rotation rod, of the linkage rod is fixedly provided with a driven bevel gear, the driving bevel gears are in one-to-one meshed connection with the driven bevel gears, and a plurality of exhaust blades are uniformly and fixedly arranged on a linkage rod body between the driven bevel gears and the annular filter window.

Preferably, the air guide mechanism comprises an echo device fixed on the side wall of the filter tube, a filter tube is fixedly arranged in the filter tube between the filter plate and the echo device, a communicating tube for communicating the echo device with the filter tube is fixedly arranged between the echo device and the filter tube, an air inlet communicated with the echo device is fixedly arranged on the side wall of the echo device, and an air outlet is formed in the side wall, far away from the filter plate, of the filter tube.

Preferably, a plurality of sound absorbing cotton are arranged in the filter pipe between the air outlet and the filter plate in an annular array.

Preferably, a plurality of the sound absorbing cotton one ends are all fixedly connected with the filter plate, and the other ends are all fixedly connected with the inner wall of the filter pipe.

Preferably, an air inlet is formed in one end, close to the air inlet, of the side wall of the air pipe body, and an air outlet is formed in one end, close to the air outlet, of the side wall of the air pipe body.

Preferably, the air inlets are in one-to-one correspondence with the air inlets, and the air outlets are in one-to-one correspondence with the air outlets.

Compared with the prior art, the invention has the beneficial effects that:

according to the engine silencing air pipe provided by the invention, the air pipe body is opened by arranging the filtering mechanism, the filtering mechanism and the air guide mechanism are installed and embedded into the air pipe body, so that the plurality of double-headed funnels are in one-to-one correspondence with the first resonant chamber, the second resonant chamber and the third resonant chamber, then the air pipe body is installed at the air outlet of the engine, the motor is electrically connected with a power supply for controlling the engine, the engine is started (the engine is started synchronously), sound-carrying gas exhausted by the engine enters the interior of the echo device through the air inlet of the air pipe body and the air inlet of the echo device, sound gas after back swinging in the echo device enters the filtering pipe through the communicating pipe, the first filtering is carried out in the filtering pipe through the filtering barrel and the filtering board, the sound gas after filtering is subjected to secondary purification and sound reduction through the sound-absorbing cotton, and then the sound gas is pumped into the first resonant chamber, the second resonant chamber, the resonant chamber and the expansion chamber are subjected to secondary sound reduction (the motor is started to drive through the rotating rod to drive the drive bevel gear to rotate), and the drive bevel gear is driven to drive the bevel gear to rotate, so that the sound gas enters the expansion chamber and each expansion chamber after being filtered through the filtering mechanism, and pollution-reducing performance of the silencing air pipe is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a schematic diagram of a filter mechanism according to the present invention in a depression view;

FIG. 3 is a schematic diagram of the cross-sectional internal structure of the silencing air duct body of the present invention;

FIG. 4 is a schematic side sectional view of a filter mechanism of the present invention;

FIG. 5 is a schematic side cross-sectional internal structure of the present invention;

fig. 6 is an enlarged schematic view of the structure of fig. 2 a according to the present invention.

In the drawings, the list of components represented by the various numbers is as follows:

1. an air duct body; 2. an expansion chamber; 3. a connecting pipe; 4. a first resonance chamber; 5. a second resonance chamber; 6. a third resonance chamber; 7. a filter tube; 8. a filter plate; 9. a double-ended funnel; 10. an annular filter window; 11. a motor; 12. a rotating lever; 13. a drive bevel gear; 14. a linkage rod; 15. a driven bevel gear; 16. an air suction blade; 17. a filter cartridge; 18. an echo device; 19. a communicating pipe; 20. a gas inlet; 21. sound absorbing cotton; 22. a gas outlet; 23. an air inlet; 24. and an air outlet.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1-6, the present invention provides a technical solution:

the engine silencing air pipe comprises an air pipe body 1, a connecting pipe 3 communicated with the air pipe body 1 is fixedly arranged on the side wall of the air pipe body 1, an expansion chamber 2 is fixedly connected to one end, away from the air pipe body 1, of the connecting pipe 3, and a resonance chamber I4, a resonance chamber II 5 and a resonance chamber III 6 communicated with the air pipe body 1 are respectively fixedly arranged on the side wall of the air pipe body 1;

the inner wall card of tuber pipe body 1 is equipped with filtering mechanism and air guide mechanism, filtering mechanism and air guide mechanism fixed connection, filtering mechanism is including the filter tube 7 that the card was located tuber pipe main part inner wall, the one end that the filter tube 7 inner wall is close to air guide mechanism is fixed to be equipped with filter plate 8, filtering mechanism outer wall is fixed to be equipped with rather than the intercommunication and with resonant chamber one 4, resonant chamber two 5 and resonant chamber three 6 one-to-one a plurality of double-end funnels 9, a plurality of double-end funnels 9 inner walls that are located filtering tube 7 are all fixed to be equipped with annular filter window 10, the filter tube 7 lateral wall is provided with actuating mechanism, be equipped with pumping mechanism in a plurality of double-end funnels 9.

The driving mechanism comprises a motor 11 fixed on the side wall of the filter tube 7, a rotating rod 12 is fixedly arranged at the output end of the motor 11, one end of the rotating rod 12 far away from the motor 11 penetrates through the double-end funnels 9 to one end of the filter tube 7 far away from the motor 11, and a driving bevel gear 13 is fixedly sleeved on the rod bodies of the rotating rods 12 positioned in the double-end funnels 9; the driving bevel gear 13 interacts with the driven bevel gear 15, so that the wind suction blade 16 rotates to accelerate the sound gas to enter the resonance chamber quickly, and the opposite impact of the gas flow is accelerated, so that the effect of quick sound reduction is achieved.

The suction mechanisms comprise linkage rods 14 which are rotatably sleeved on the annular filter windows 10, driven bevel gears 15 are fixedly arranged at one ends of the linkage rods 14 close to the rotary rods 12, a plurality of driving bevel gears 13 are in one-to-one meshed connection with the driven bevel gears 15, and a plurality of exhaust blades 16 are uniformly and fixedly arranged on rod bodies of the linkage rods 14 positioned between the driven bevel gears 15 and the annular filter windows 10; the annular filter window 10 plays a third filtering role, and further improves the purification efficiency.

The air guide mechanism comprises an echo device 18 fixed on the side wall of the filter tube 7, a filter cartridge 17 is fixedly arranged in the filter tube 7 positioned between the filter plate 8 and the echo device 18, a communicating pipe 19 for communicating the echo device 18 and the filter tube 7 is fixedly arranged between the echo device 18 and the filter tube 7, an air inlet 20 communicated with the echo device 18 is fixedly arranged on the side wall of the echo device 18, and an air outlet 22 is formed in the side wall, far away from the filter plate 8, of the filter tube 7; the filter cartridge 17 and the filter plate 8 are matched with each other, so that gas is dispersed and split in the filter pipe 7, and the filtering efficiency is improved.

Wherein, a plurality of sound-absorbing cotton 21 are annularly arranged in the filter tube 7 between the air outlet 22 and the filter plate 8; the sound absorbing cotton 21 can assist in adsorbing impurities in the sound gas.

Wherein, a plurality of inhale the cotton 21 one end of sound all with filter plate 8 fixed connection, the other end all with filter tube 7 inner wall fixed connection.

Wherein, air inlet 23 is provided at one end of the side wall of air pipe body 1 near air inlet 20, and air outlet 24 is provided at one end of the side wall of air pipe body 1 near air outlet 22.

Wherein, the air inlets 20 are in one-to-one correspondence with the air inlets 23, and the air outlets 22 are in one-to-one correspondence with the air outlets 24; the air inlets 20 are in one-to-one correspondence with the air inlets 23, so that sound gas enters the filtering mechanism through the air inlets 20.

Working principle: opening the air pipe body 1, installing and embedding the filtering mechanism and the air guide mechanism into the air pipe body 1, enabling a plurality of double-end funnels 9 to be in one-to-one corresponding tight connection with the first resonance chamber 4, the second resonance chamber 5 and the third resonance chamber 6, then installing the air pipe body 1 at the air outlet of the engine, electrically connecting the motor 11 with a power supply for controlling the engine, starting the engine (the engine starting motor 11 is synchronously started), enabling the sound-carrying gas exhausted by the engine to enter the inside of the echo device 18 through the air inlet 20 of the air pipe body 1 and the air inlet 20 of the echo device 18, enabling the sound gas after the back oscillation in the echo device 18 to enter the filtering pipe 7 through the communicating pipe 19, firstly filtering the sound gas through the filtering barrel 17 and the filtering plate 8 in the filtering pipe 7, enabling the filtered sound gas to be secondarily purified and reduced by the sound absorbing cotton 21, then enabling the sound gas to be secondarily reduced by the air exhausting blades 16 in the first resonance chamber 4, the second resonance chamber 5, the third resonance chamber 6 and the expansion chamber 2 to be reduced again (the motor 11 is started to drive the driving bevel gear 13 to rotate through the rotating rod 12), and the driving bevel gear 13 to drive the driving bevel gear 16 to rotate through the driven bevel gear 15, thereby realizing that the sound gas is firstly filtered by the filtering chamber and finally enters the air pipe 2 to be exhausted through the air outlet 22 and is prevented from being polluted after the air pipe 1.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.

Claims

1. The engine silencing air pipe comprises an air pipe body (1), and is characterized in that: the side wall of the air pipe body (1) is fixedly provided with a connecting pipe (3) communicated with the air pipe body, one end, far away from the air pipe body (1), of the connecting pipe (3) is fixedly connected with an expansion chamber (2), and the side wall of the air pipe body (1) is fixedly provided with a resonance chamber I (4), a resonance chamber II (5) and a resonance chamber III (6) communicated with the air pipe body respectively;

the air duct comprises an air duct body (1), wherein the inner wall of the air duct body is provided with a filtering mechanism and an air guide mechanism in a clamping manner, the filtering mechanism is fixedly connected with the air guide mechanism, the filtering mechanism comprises a filtering pipe (7) which is clamped on the inner wall of the air duct body, one end, close to the air guide mechanism, of the inner wall of the filtering pipe (7) is fixedly provided with a filter plate (8), the outer wall of the filtering mechanism is fixedly provided with a plurality of double-end funnels (9) which are communicated with the filtering mechanism and correspond to a first resonant chamber (4), a second resonant chamber (5) and a third resonant chamber (6) one by one, the inner walls of the double-end funnels (9) which are positioned in the filtering pipe (7) are fixedly provided with annular filter windows (10), and the side wall of the filtering pipe (7) is provided with a driving mechanism, and a plurality of double-end funnels (9) are internally provided with a sucking mechanism;

the driving mechanism comprises a motor (11) fixed on the side wall of the filter tube (7), a rotating rod (12) is fixedly arranged at the output end of the motor (11), one end, far away from the motor (11), of the rotating rod (12) penetrates through the double-end funnels (9) to one end, far away from the motor (11), of the filter tube (7), and a driving bevel gear (13) is fixedly sleeved on the rod bodies of the rotating rods (12) positioned in the double-end funnels (9);

the suction mechanism comprises a linkage rod (14) which is rotationally sleeved on the annular filter window (10), a driven bevel gear (15) is fixedly arranged at one end, close to the rotation rod (12), of the linkage rod (14), a plurality of driving bevel gears (13) are in one-to-one meshed connection with the driven bevel gears (15), and a plurality of suction blades (16) are uniformly and fixedly arranged on the rod body of the linkage rod (14) between the driven bevel gears (15) and the annular filter window (10);

the air guide mechanism comprises an echo device (18) fixed on the side wall of the filter tube (7), a filter cartridge (17) is fixedly arranged in the filter tube (7) between the filter plate (8) and the echo device (18), a communicating pipe (19) for communicating the filter tube (18) with the filter tube (7) is fixedly arranged between the echo device (18) and the filter tube (7), an air inlet (20) communicated with the echo device (18) is fixedly arranged on the side wall of the echo device (18), and an air outlet (22) is formed in the side wall, far away from the filter plate (8), of the filter tube (7);

a plurality of sound absorbing cotton (21) are arranged in the annular array in the filter pipe (7) between the air outlet (22) and the filter plate (8).

2. The engine silencer duct of claim 1, wherein: one end of each sound absorbing cotton (21) is fixedly connected with the filter plate (8), and the other end is fixedly connected with the inner wall of the filter pipe (7).

3. The engine silencer duct of claim 1, wherein: an air inlet (23) is formed in one end, close to the air inlet (20), of the side wall of the air pipe body (1), and an air outlet (24) is formed in one end, close to the air outlet (22), of the side wall of the air pipe body (1).

4. The engine silencer duct of claim 3, wherein: the air inlets (20) are in one-to-one correspondence with the air inlets (23), and the air outlets (22) are in one-to-one correspondence with the air outlets (24).