CN218563732U

CN218563732U - Silencing system

Info

Publication number: CN218563732U
Application number: CN202222918076.5U
Authority: CN
Inventors: 黄文斌; 楼贵东; 李军惠; 徐杰; 蔺代枧
Original assignee: Zhejiang Taotao Vehicles Co Ltd
Current assignee: Zhejiang Taotao Vehicles Co Ltd
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-03
Anticipated expiration: 2032-10-31

Abstract

The utility model belongs to the technical field of motor vehicle accessory, refer in particular to a noise cancelling system, include: the air inlet and the air outlet are arranged on the shell; the first partition plate divides the inner cavity of the shell into a first air inlet cavity and a second air inlet cavity, and a communication hole for communicating the first air inlet cavity with the second air inlet cavity is formed in the first partition plate; the silencing assembly is arranged in the first air inlet cavity and is used for forming a returning silencing channel in the first air inlet cavity; and the flow guide assembly is arranged in the second air inlet cavity and is used for guiding the gas exhausted from the first air inlet cavity. This patent is through the cooperation of amortization subassembly and water conservancy diversion subassembly, reduces the noise that gas flow caused by a wide margin, comfort level when increasing the user and driving, and the water conservancy diversion subassembly leads to gas to the separation is gaseous, thereby further noise reduction, and filters the mars, reduces the potential safety hazard.

Description

Silencing system

Technical Field

The utility model belongs to the technical field of motor vehicle accessories, refer in particular to a noise reduction system.

Background

The silencing system is a device which can obstruct sound transmission and allow airflow to pass through, is an important part for reducing the exhaust noise of the internal combustion engine, and the performance of the silencing system directly influences the noise of the engine and has great influence on the performance of the engine, such as power loss, oil consumption, torque and the like.

The noise broadband processing device disclosed by the Chinese utility model 201920530992.7 comprises a first cavity and a second cavity which are relatively independent and are formed in a shell; the two exhaust pipes are respectively and correspondingly communicated with the first cavity and the second cavity, and the air inlet pipe is communicated with the first cavity or the second cavity; and a communicating channel is arranged between the first cavity and the second cavity.

The utility model provides a noise broadband processing apparatus's noise cancelling effect is not good, and produces the mars easily in work, influences the installation nature that the vehicle travel.

Disclosure of Invention

The utility model aims at providing a better amortization system of noise cancelling effect.

The purpose of the utility model is realized like this:

a sound attenuating system, comprising:

the air inlet and the air outlet are arranged on the shell;

the inner cavity of the shell is divided into a first air inlet cavity and a second air inlet cavity by the first partition plate, and a communication hole for communicating the first air inlet cavity with the second air inlet cavity is formed in the first partition plate;

the silencing assembly is arranged in the first air inlet cavity and is used for forming a returning silencing channel in the first air inlet cavity; and

and the flow guide assembly is arranged in the second air inlet cavity and is used for guiding the gas exhausted from the first air inlet cavity.

Further, the muffler assembly includes:

the second partition plate is arranged in the first air inlet cavity and divides the first air inlet cavity into a first cavity and a second cavity; the second partition plate is provided with an overflowing hole for communicating the first chamber with the second chamber;

one end of the first exhaust pipe is connected with the air inlet, and the other end of the first exhaust pipe penetrates through the second partition plate and is used for communicating the air inlet with the second cavity; and

and one end of the second exhaust pipe penetrates through the second partition plate, and the other end of the second exhaust pipe penetrates through the first partition plate and is used for communicating the first cavity with the second air inlet cavity.

Furthermore, a plurality of overflowing holes are arranged and distributed on the second partition plate in a grid-shaped manner.

Furthermore, the flow guide assembly comprises a third partition plate arranged in the second air inlet cavity, and a plurality of flow guide holes are formed in the third partition plate.

Further, the flow guide assembly further comprises a wire mesh part arranged at the outer edge of the air outlet.

Furthermore, an air outlet pipe is inserted into the air outlet, the air outlet pipe is provided with a filtering end arranged in the shell, and the filtering end is provided with the wire mesh part.

Compared with the prior art, the utility model has the advantages that:

this patent is through the cooperation of amortization subassembly and water conservancy diversion subassembly, reduces the noise that gas flow caused by a wide margin, comfort level when increasing the user and driving, and the water conservancy diversion subassembly leads to gas to the separation is gaseous, thereby further noise reduction, and filters the mars, reduces the potential safety hazard.

Drawings

Fig. 1 is a schematic structural view of a muffler system.

FIG. 2 is a side sectional view of the muffler system.

FIG. 3 is a broken-away schematic view of a muffler system.

The reference numerals in the figures denote the meanings:

1. a housing; 11. an air inlet; 12. an air outlet; 13. a first air inlet chamber; 131. a first chamber; 132. a second chamber; 14. a second air intake chamber;

2. a first partition plate; 21. a communicating hole;

3. a noise reduction assembly; 31. a second partition plate; 32. an overflowing hole; 33. a first exhaust pipe; 34. a second exhaust pipe;

4. a flow guide assembly; 41. a third partition plate; 42. a wire section; 43. a flow guide hole;

5. an air inlet pipe; 6. an air outlet pipe; 61. a filtering end;

Detailed Description

The invention will be further described with reference to specific embodiments below:

a silencing system comprises a shell 1, a first partition plate 2, a silencing assembly 3 and a flow guide assembly 4; as shown in fig. 1-3, the casing 1 is made of metal, and is integrally cylindrical, the front end and the rear end of the casing 1 are provided with an air inlet 11 and an air outlet 12, an air inlet pipe 5 and an air outlet pipe 6 are mounted on the air inlet 11 and the air outlet 12, the air inlet pipe 5 is used for connecting with an engine of a vehicle, and the air outlet pipe 6 is used for discharging waste gas.

First division board 2 sets up the middle part position at casing 1, and the border of first division board 2 is equipped with along keeping off, through the shape that makes first division board 2 and casing 1's big or small adaptation, makes through interference fit's mode first division board 2 is fixed in casing 1. The inner cavity of the shell 1 is divided into a first air inlet cavity 13 and a second air inlet cavity 14 by the first partition plate 2, the first air inlet cavity 13 is communicated with the air inlet 11, and the second air inlet cavity 14 is communicated with the air outlet 12; the first partition plate 2 is further provided with a communication hole 21, and the communication hole 21 is used for communicating the first air inlet cavity 13 and the second air inlet cavity 14 to realize air exhaust.

Further, the silencing assembly 3 is used for forming a folded silencing passage in the first air inlet cavity 13 to realize silencing, and specifically, as shown in fig. 2 and 3, the silencing assembly 3 includes a second partition plate 31, a first exhaust pipe 33 and a second exhaust pipe 34; the second partition plate 31 is fixed in the first air inlet cavity 13 in an interference fit manner, and divides the first air inlet cavity 13 into a first chamber 131 and a second chamber 132, similarly to the first partition plate 2, and the second partition plate 31 is provided with an overflowing hole 32 for communicating the first chamber 131 with the second chamber 132; one end of the first exhaust pipe 33 is connected to the air inlet 11, and the other end of the first exhaust pipe 33 penetrates through the second partition plate 31, so that the air inlet 11 is communicated with the second chamber 132, in this embodiment, the first exhaust pipe 33 is the air inlet pipe 5, and the air inlet pipe 5 sequentially penetrates through the air inlet 11 and the overflowing hole 32, so that the gas in the engine can be directly discharged into the second chamber 132.

The second exhaust pipe 34 is connected between the second partition plate 31 and the first partition plate 2, that is, one end of the second exhaust pipe 34 is inserted into the second partition plate 31, and the other end is inserted into the communication hole 21 of the first partition plate 2, so that the first chamber 131 is communicated with the second intake chamber 14.

At this time, the gas in the engine directly enters the second chamber 132 from the first exhaust pipe 33, then enters the first chamber 131 through the through-hole 32 in the second partition plate 31, and then directly enters the second intake chamber 14 through the second exhaust pipe 34. At this time, an S-shaped silencing channel is formed in the first intake chamber 13 by the silencing assembly 3, and when the gas enters the first chamber 131 from the first exhaust pipe 33, the channel section where the gas is located is suddenly enlarged, which causes acoustic reactance change, so that the sound wave propagating along the first exhaust pipe 33 is reflected back to the sound source direction for silencing; similarly, when the gas enters the second gas inlet chamber 14 from the second gas outlet pipe 34, the gas is silenced because the channel section where the gas is located is suddenly enlarged; because the silencing channel of the patent is in an S shape, when the gas is turned, the gas collides with the second chamber 132 or the first chamber 131 to form reverse sound waves, so that the sound waves are counteracted with the sound waves transmitted from the first exhaust pipe 33, and further silencing is realized.

Further, the flow guiding assembly 4 includes a third dividing plate 41 disposed in the second air inlet chamber 14, and a plurality of flow guiding holes 43 are disposed on the third dividing plate 41. As shown in fig. 2 and 3, the third dividing plate 41 is also fixed in the second intake chamber 14 by interference fit, a plurality of petal-shaped guide holes 43 distributed circumferentially are formed in the third dividing plate 41, the guide holes 43 are used for filtering impurities in the airflow passing through the third dividing plate 41, and can separate a whole gas into a plurality of fine airflows and guide the fine airflows to move in a specified direction, so that the gas moves stably without colliding with the housing 1, and noise is reduced.

To sum up, this patent reduces the noise that gas flow caused by a wide margin through the cooperation of amortization subassembly 3 and water conservancy diversion subassembly 4, increases the comfort level when the user drives, and water conservancy diversion subassembly 4 carries out the water conservancy diversion to gas to separation gas, and further noise reduction, and filter the mars, reduce the potential safety hazard.

Furthermore, the plurality of overflowing holes 32 are arranged and distributed on the second separating plate 31 in a grid shape, and the overflowing holes 32 can divide the airflow passing through the second separating plate 31 into a plurality of fine airflows and guide the fine airflows to run in a specified direction, so that the air runs stably and the noise is reduced.

Further, the flow guide assembly 4 further includes a wire mesh portion 42 disposed at an outer edge of the air outlet 12. As shown in fig. 3, the outlet pipe 6 has a filtering end 61 disposed in the housing 1, the filtering end 61 is cylindrical, the wire mesh part 42 is disposed on the outer wall of the filtering end 61, and the wire mesh part 42 has a plurality of fine round holes formed on the outer edge of the filtering end 61, so as to filter sparks, thereby reducing the potential safety hazard.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims

1. A sound attenuation system, comprising:

the air conditioner comprises a shell (1), wherein an air inlet (11) and an air outlet (12) are formed in the shell (1);

the inner cavity of the shell (1) is divided into a first air inlet cavity (13) and a second air inlet cavity (14) by the first partition plate (2), and a communication hole (21) for communicating the first air inlet cavity (13) with the second air inlet cavity (14) is formed in the first partition plate (2);

the silencing assembly (3) is arranged in the first air inlet cavity (13) and is used for forming a returning silencing channel in the first air inlet cavity (13); and

and the flow guide assembly (4) is arranged in the second air inlet cavity (14) and is used for guiding the gas exhausted from the first air inlet cavity (13).

2. A sound-damping system as claimed in claim 1, characterized in that the sound-damping assembly (3) comprises:

a second partition plate (31) that is provided in the first intake chamber (13) and divides the first intake chamber (13) into a first chamber (131) and a second chamber (132); the second partition plate (31) is provided with an overflowing hole (32) for communicating the first chamber (131) with the second chamber (132);

a first exhaust pipe (33) having one end connected to the air inlet (11) and the other end penetrating the second partition plate (31) for communicating the air inlet (11) with the second chamber (132); and

and one end of the second exhaust pipe (34) penetrates through the second partition plate (31), and the other end of the second exhaust pipe penetrates through the first partition plate (2) and is used for communicating the first chamber (131) with the second air inlet cavity (14).

3. A sound attenuating system as claimed in claim 2, characterized in that: the overflowing holes (32) are arranged in a plurality and are distributed on the second partition plate (31) in a grid-shaped mode.

4. A sound attenuating system as claimed in claim 1, characterized in that: the flow guide assembly (4) comprises a third partition plate (41) arranged in the second air inlet cavity (14), and a plurality of flow guide holes (43) are formed in the third partition plate (41).

5. The acoustic abatement system of claim 4, wherein: the flow guide assembly (4) further comprises a wire mesh part (42) arranged at the outer edge of the air outlet (12).

6. An acoustic abatement system according to claim 5, wherein: an air outlet pipe (6) is inserted into the air outlet (12), the air outlet pipe (6) is provided with a filtering end (61) arranged in the shell (1), and the outer edge wall of the filtering end (61) is provided with the wire mesh part (42).