CN109184969B

CN109184969B - Air filtering device of vehicle and air intake system of vehicle

Info

Publication number: CN109184969B
Application number: CN201811287812.3A
Authority: CN
Inventors: 严华; 谢荣
Original assignee: Mahle Automobile Technology China Co ltd
Current assignee: Mahle Automobile Technology China Co ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2024-06-04
Anticipated expiration: 2038-10-31
Also published as: CN109184969A

Abstract

The invention discloses an air filtering device of a vehicle, which comprises a filter element, a shell, a first partition plate and a pipeline, wherein an air inlet surface of the filter element and the shell enclose a filter cavity, the shell is provided with an air inlet, and the first partition plate is arranged in the filter cavity and divides the filter cavity into: the expansion cavity is formed by enclosing the first partition plate, a part of the shell and the filter element, the air inlet is arranged in the expansion cavity, and air flows from the air inlet to the filter element through the expansion cavity; and the first partition plate and the other part of the shell enclose a resonant cavity, the pipeline penetrates through the first partition plate, the expansion cavity is communicated with the resonant cavity through the pipeline, and the resonant cavity communicated with the pipeline is formed into a Helmholtz resonant cavity. The resonant cavity is isolated in the original filter cavity through the first partition plate, the air filter device has the functions of filtering and silencing, the space of the original air filter device is fully utilized, the silencing device independently arranged outside the air filter device is omitted, the whole vehicle space is effectively saved, and the installation process of the air inlet system is simplified.

Description

Air filtering device of vehicle and air intake system of vehicle

Technical Field

The invention relates to the technical field of vehicles, in particular to an air filtering device of a vehicle and an air inlet system of the vehicle.

Background

An air intake system for a vehicle for supplying air into an engine includes an air intake conduit for delivering air to the engine, an air filter device disposed in the air intake conduit, and a muffler device. Air entering the engine needs to pass through the air filtering device to remove dust, particles and other impurities, so that serious accidents such as cylinder pulling and the like caused by poor air quality in the running process of the engine are avoided. In addition, the air entering the engine is required to be subjected to silencing treatment so as to reduce the noise of the engine and further reduce the noise of the whole vehicle.

As shown in fig. 1 and 2, the conventional air filter device includes a filter element 1 and a lower housing 2, the lower housing 2 has a side wall 4 and a bottom wall 5, the side wall 4 has four side walls, and the four side walls, the filter element 1 and the bottom wall 5 together define a filter cavity 6. The filter chamber 6 is provided with an air inlet 3, and the air inlet 3 is arranged on one side wall.

The existing silencer comprises resonant cavities which are independently arranged at different positions of the air inlet pipeline, for example, resonant cavities which are respectively arranged on the dirty air pipe and the clean air pipe. The resonant cavity arranged on the dirty air pipe is a porous resonant cavity, the porous resonant cavity comprises a plate provided with a plurality of holes and a lower shell, the plate and the lower shell enclose the resonant cavity, and the porous resonant cavity is used for eliminating high-frequency noise. The resonant cavity arranged on the clean air pipe is a Helmholtz resonant cavity which is used for eliminating low-frequency noise.

The air filter device is connected between the dirty air pipe and the clean air pipe, and the clean air pipe is connected with the engine, so that external air flows through the dirty air pipe, the air filter device and the clean air pipe in sequence before entering the engine, and is filtered by the air filter device and silenced by the silencer.

The above prior art air intake system has the following drawbacks:

The air inlet system occupies a large space in the whole vehicle, and the air inlet system is complex in installation process and high in cost.

Disclosure of Invention

The invention aims to provide an air filtering device of a vehicle and an air inlet system of the vehicle, so as to optimize the layout of the air inlet system in the whole vehicle and simplify the installation process of the air inlet system.

In order to achieve the above object, the invention provides an air filter device for a vehicle, comprising a filter element and a shell, wherein an air inlet surface of the filter element and the shell enclose a filter cavity, the shell is provided with an air inlet, the air filter device further comprises a first partition board and a pipeline, and the first partition board is arranged in the filter cavity and divides the filter cavity into:

the expansion cavity is formed by enclosing the first partition plate, a part of the shell and the filter element, and the air inlet is formed in the expansion cavity; and

The resonant cavity is surrounded by the first baffle plate and the other part of the shell,

The pipe penetrates through the first partition plate, the expansion cavity and the resonant cavity are communicated through the pipe, and the resonant cavity communicated with the pipe is formed into a Helmholtz resonant cavity.

Preferably, the housing has a side wall and a bottom wall, the air inlet is located in the side wall, the bottom wall is connected to the side wall, a portion of the side wall, the first partition and the filter element enclose the expansion chamber, and another portion of the side wall, the first partition and the bottom wall enclose the resonant chamber.

Preferably, the air filter device comprises a flow guiding structure arranged in the expansion cavity from the air inlet to the filter element, and air flows from the air inlet to the filter element along the flow guiding structure.

Preferably, the first partition has an arcuate panel having an arc extending from the housing at one side of the air inlet to an end of the filter element remote from the air inlet, the arcuate panel forming the flow directing structure.

Preferably, the number of the pipelines is at least two, the air filtering device further comprises a second baffle plate, the second baffle plate is arranged in the resonant cavity and divides the resonant cavity into at least two parts, and the resonant cavities of all the parts are respectively communicated with the expansion cavity through the pipelines.

Preferably, the second partition extends in a depth direction of the air filter device, and divides the at least two portions in the resonant cavity perpendicular to the depth direction.

Preferably, the resonant cavity is divided into at least two portions of different volumes.

Preferably, the housing has a side wall and a bottom wall, the air inlet is located at the side wall, the side wall is connected to the bottom wall, and the second partition, a portion of the first partition and a portion of the bottom wall enclose a portion of the resonant cavity, so that the portion of the resonant cavity is cylindrical.

Preferably, the axial direction of the pipe is perpendicular to the axial direction of the air inlet.

Preferably, the first separator further has a porous region having at least two pores,

The air filter device also comprises a second baffle plate which is arranged in the resonant cavity and divides the resonant cavity into at least two parts,

The resonator has a portion that communicates with the expansion chamber through the porous region to form a porous resonator, and a portion that communicates with the expansion chamber through the pipe to form a Helmholtz resonator, the porous resonator having a volume smaller than a volume of the Helmholtz resonator.

Preferably, the air filter device further comprises a reinforcing structure which connects the housing and the second partition at the same time.

The invention also provides an air inlet system of the vehicle, which comprises a clean air pipe, a dirty air pipe and an air filtering device connected between the clean air pipe and the dirty air pipe, wherein the air filtering device is any one of the air filtering devices in the technical scheme.

The invention has the following beneficial effects:

the resonant cavity is isolated in the original filter cavity through the first partition plate, the air filter device has the functions of filtering and silencing, the space of the original air filter device is fully utilized, the silencing device independently arranged outside the air filter device is omitted, the whole vehicle space is effectively saved, the manufacturing cost of an air inlet system is reduced, and the installation process of the air inlet system is simplified.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic perspective view of a conventional air filter device;

FIG. 2 is a partial cross-sectional view of the air filtration device of FIG. 1;

FIG. 3A is a schematic perspective view of one embodiment of an air filtration device provided by the present disclosure, wherein a filter cartridge is omitted;

FIG. 3B is a partial cross-sectional view of one embodiment of an air filtration device provided by the present disclosure;

FIG. 3C is a schematic perspective view of a first partition and a duct of the air filter device of FIGS. 3A and 3B;

FIG. 4A is a schematic perspective view of another embodiment of an air filtration device provided by the present disclosure, wherein a filter cartridge is omitted;

FIG. 4B is a partial cross-sectional view of another embodiment of an air filtration device provided by the present disclosure;

FIG. 4C is a schematic perspective view of a first partition and a duct of the air filter device of FIGS. 4A and 4B;

FIG. 4D is a schematic perspective view of the lower housing and the second partition of the air filter device of FIGS. 4A and 4B;

FIG. 5A is a schematic perspective view of yet another embodiment of an air filtration device provided by the present disclosure, wherein a filter cartridge is omitted;

FIG. 5B is a partial cross-sectional view of yet another embodiment of an air filtration device provided by the present disclosure;

FIG. 5C is a schematic perspective view of a first partition and a duct of the air filter device of FIGS. 5A and 5B;

Fig. 5D is a schematic perspective view of the lower housing and the second partition of the air filter device of fig. 5A and 5B.

Reference numerals illustrate:

1 filter element

2 Lower shell

3 Air inlet

4 Side wall

5 Bottom wall

6 Filter cavity

100 Filter core

200 Lower shell

201 Side wall

202 Bottom wall

203 First separator

204 Pipeline

205 Second separator

206 Reinforcing rib

207 Porous region

300 Air inlet

400 Expansion chamber

500 Resonant cavity

501 A part of a resonant cavity

502 Another portion of the resonant cavity.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The present disclosure provides an air filtering device for a vehicle, which is installed before an intake part of an engine so as to filter air entering the engine. Fig. 3A to 5D show a portion of the air filter device having a lower housing 200 and a filter cartridge 100. In this context, the following housings are taken as examples of the housings in the present disclosure, it being understood that the housing referred to in the present disclosure may also be an upper housing, a left housing, a right housing, a front housing, a rear housing, etc., based on the placement position of the air filter device.

As shown in fig. 3A to 5D, the air filter device has an upper case (not shown), a lower case 200, and a filter cartridge 100 disposed between the upper case and the lower case 200, the filter cartridge 100 and the lower case 200 enclosing a filter chamber, and the filter cartridge 100 and the upper case enclosing a clean air chamber (not shown). The filter chamber has an air inlet 300 and the clean air chamber has an air outlet (not shown). Air enters the filter chamber from the air inlet 300, is filtered through the filter cartridge 100, and finally enters the clean air chamber to flow to the engine through the air outlet.

The lower housing 200 includes a side wall 201 and a bottom wall 202, the side wall 201 may have four side walls, the bottom wall 202 and the filter cartridge 100 enclosing a substantially square filter chamber, and the air inlet 300 is formed in one of the side walls.

Defining a direction extending from the filter cartridge to the bottom wall of the housing as a depth direction; the direction closer to the filter element in the depth direction is "up", the direction closer to the bottom wall of the housing is "down", that is, the direction from the filter element to the bottom wall in the depth direction is from top to bottom, and the direction from the bottom wall to the filter element is from bottom to top.

As shown in fig. 3A to 3C, the air filter device further includes a first partition 203 and a pipe 204, the first partition 203 is disposed within the filter chamber, and the first partition 203 divides the filter chamber into an expansion chamber 400 and a resonance chamber 500. The expansion chamber 400 is defined by the first partition 203, the filter cartridge 100, and a portion of the housing in which the air inlet 300 is formed, and the resonance chamber 500 is defined by the first partition 203 and another portion of the housing. The conduit 204 passes through the first diaphragm 203 and the expansion chamber 400 and the resonant chamber 500 communicate through the conduit 204.

The pipe 204 may be directly connected to the first separator 203, may be indirectly connected to the first separator 203 through a sealing member, or may be integrally formed with the first separator 203.

The filter element 100 is entirely used for enclosing the expansion cavity 400, and air enters the resonant cavity 500 in the process of flowing from the air inlet 300 to the filter element 100 through the expansion cavity 400, namely, the air enters the expansion cavity 400 through the air inlet 300 and enters the resonant cavity 500 through the pipeline 204, and the air in the resonant cavity 500 vibrates in the resonant cavity 500 to realize the silencing effect, and the air in the expansion cavity 400 is filtered through the filter element 100 and enters the clean air cavity.

In this way, the resonant cavity 500 is isolated in the original filter cavity through the first partition 203, the air filter device has the functions of filtering and silencing, the space of the original air filter device is fully utilized, the silencing device independently arranged outside the air filter device is omitted, the whole vehicle space is effectively saved, the manufacturing cost of the air inlet system is reduced, and the installation process of the air inlet system is simplified. The air filtering device provided by the disclosure can simultaneously meet the requirements of filtering and silencing the air inlet of the engine.

In addition, low-frequency noise is mostly generated in the engine air intake, and the air filtering device forms a large-volume Helmholtz resonant cavity by virtue of the pipeline 204 and the first partition plate 203, so that the engine specific low-frequency noise is favorably eliminated, and meanwhile, the target conditions of air intake resistance and acoustics are met.

In one embodiment, the expansion chamber 400 and the resonance chamber 500 are arranged in the depth direction: the first separator 203, the side wall 201 (including the air inlet 300) of one side of the first separator 203 (the side near the filter cartridge 100), and the filter cartridge 100 enclose an expansion chamber 400; the first diaphragm 203, the side wall 201 on the other side of the first diaphragm 203 (the side near the bottom wall 202 of the housing), and the bottom wall 202 enclose a resonant cavity 500. That is, the first separator 203 divides the expansion chamber and the resonance chamber in the depth direction within the filter chamber, the expansion chamber being closer to the filter element than the resonance chamber. The resonant cavity 500 and the expansion cavity 400 share the first diaphragm 203 and the sidewall 201 of the lower case.

In this way, the expansion chamber 400 and the resonant chamber 500 are simply isolated in the depth direction within the filter chamber by the first separator 203, so that the overall structure of the air filter device is simple, and a larger volume of the resonant chamber 500 can be obtained, which is advantageous in eliminating low frequency noise.

Of course, the resonator 500 may be formed in other ways, such as being surrounded by only the first partition 203 and the bottom wall 202, such that the resonator 500 is formed adjacent to the bottom wall 202, while other parts of the filter cavity, such as the filter cartridge 100, all of the side walls 201 and possibly the remaining part of the bottom wall 202, enclose the irregularly shaped expansion cavity 400.

In yet another embodiment, the first partition 203 has an arcuate panel surface that interfaces with the sidewall 201, the arcuate panel surface having an arc that extends from one side of the air inlet 300 (in the figure, the underside of the air inlet 300) to an end of the filter cartridge 100 that is remote from the air inlet 300. The first partition 203 is hermetically connected to the lower housing so as to divide the filter chamber into two independent chambers, i.e., the expansion chamber 400 and the resonance chamber 500, and the expansion chamber 400 and the resonance chamber 500 communicate only through the pipe 204. The arc-shaped plate surface has gentle transition, can play a role of a flow guiding structure, and air entering from the air inlet 300 flows in a laminar state, so that the air flow direction is improved, the air inlet resistance is reduced, the silencing effect is improved, and the signal difference of the air quality sensor is effectively improved.

Of course, other types of flow-guiding structures may be provided in the air filter device, the flow-guiding structures being provided in the expansion chamber 400, along which air can flow from the air inlet 300 to the filter cartridge 100. The flow guiding structure can also be, for example, a flow guiding plate, a flow guiding block and the like which are arranged independently.

As shown in fig. 4A to 4D, in a further embodiment, the air filter device may have one first partition 203 and two pipes 204, both pipes 204 passing through the first partition 203. The air filter device may further include a second partition 205 (fig. 4D), and the second partition 205 may be disposed in the resonator 500 in the depth direction and divide the resonator 500 into two parts 501, 502, and the two parts 501, 502 share the second partition 205 and the bottom wall 202 of the lower case. The two portions 501, 502 are arranged in a direction substantially perpendicular to the depth direction. The two pipes 204 are in one-to-one communication with the two portions 501, 502 of the resonant cavity 500.

The second barrier 205 may also be disposed substantially in the depth direction, i.e., the second barrier 205 extends in the depth direction or substantially in a direction similar to the depth direction.

Thus, two Helmholtz resonators are formed in the air filter device, and air will enter the two portions of the resonator 500 through the two ducts 204 after entering through the air inlet 300 and vibrate in the two portions 501, 502, respectively, thereby eliminating engine specific mid-to-low frequency noise.

Of course, the two portions 501, 502 may have other arrangements, such as, in the depth direction, one portion 501 being located in the filter cavity at a position diagonally above the air inlet 300 and the filter cartridge 100, while the other portion 502 is formed into an irregular shape by the other portion of the resonator 500, the other portion 502 being located substantially diagonally below the one portion 501, and so on.

As shown in fig. 5A to 5D, in a further embodiment, the first partition 203 may further have a porous region 207, the porous region 207 having at least two closely arranged pores, and the air filtering device may further include a second partition 205, the second partition 205 being disposed within the resonant cavity 500 and dividing the resonant cavity 500 into two portions 501, 502, the two portions 501, 502 being arranged in a direction substantially perpendicular to the depth direction. One portion 501 of the resonant cavity 500 communicates with the expansion cavity 400 through the porous region 207 and another portion 502 of the resonant cavity 500 communicates with the expansion cavity 400 through the conduit 204. The portion 501 of the resonator 500 in communication with the porous region 207 is formed as a porous resonator and the portion 502 of the resonator 500 in communication with the conduit 204 is formed as a Helmholtz resonator, the volume of the porous resonator being smaller than the volume of the Yu Hem Hotz resonator.

Thus, a Helmholtz resonator and a porous resonator are formed in the air filter device, and air enters through the air inlet 300 and then enters through the pipe 204 and the porous region 207 into and vibrates in the two parts 501, 502 of the resonator 500, respectively, thereby eliminating engine specific high and low frequency noise. Wherein the porous resonant cavity is used for eliminating high-frequency noise, and the Helmholtz resonant cavity is used for eliminating low-frequency noise.

In one embodiment, the second spacer 205 interfaces with only both the first spacer 203 and the bottom wall 202, and the second spacer 205, a portion of the bottom wall 202, and a portion of the first spacer 203 enclose one portion 501 of the resonant cavity, which one portion 501 may be formed in a cylindrical shape, and the second spacer 205, another portion of the bottom wall 202, the side wall 201, and another portion of the first spacer 203 enclose another portion 502 of the resonant cavity.

In other embodiments, one portion 501 of the resonant cavity may have a generally cylindrical shape, i.e., a cylindrical shape or a shape similar to a cylindrical shape, such as an elliptical cylindrical shape or a polygonal cylindrical shape.

It can be seen that one portion 501 of the resonant cavity can be circular, elliptical, polygonal, etc. in cross-section.

In this way, the volume of the two parts of the resonator 500 can be flexibly adjusted by adjusting the pattern of the second diaphragm 205, and the positions of the parts of the resonator 500 can be flexibly set by moving the second diaphragm 205.

Of course, the second partition 205 may not be formed in a closed shape, for example, the second partition 205 may be abutted with the first partition 203, the side wall 201, and the bottom wall 202. Thus, the second spacer 205, a portion of the sidewall 201, a portion of the bottom wall 202, and a portion of the first spacer 203 enclose one portion 501 of the resonant cavity, and the second spacer 205, another portion of the sidewall 201, another portion of the bottom wall 202, and another portion of the first spacer 203 enclose another portion 502 of the resonant cavity.

Further, to obtain a better silencing effect, the extending direction of the pipe 204 may be substantially perpendicular to the axial direction of the air inlet 300, such as being strictly perpendicular to the air inlet or forming an included angle close to 90 degrees.

Still further, the two portions of the resonant cavity 500 may have different volumes, so that noise of different frequencies may be eliminated.

Of course, the resonant cavity 500 may be divided into more than two portions, and accordingly, the pipe 204 may be more than two, and the porous region 207 may be more than two, where one pipe 204 corresponds to one portion of the resonant cavity, and one porous region 207 corresponds to one portion of the resonant cavity.

Still further, the air filter device further includes a reinforcing structure located at a position where the second partition 205 is butted with the bottom wall 202 to connect the second partition 205 and the bottom wall 202 at the same time. The reinforcing structure may be a reinforcing rib 206 or a reinforcing rib or the like so as to make the connection between the second separator 205 and the bottom wall 202 stronger.

In the present disclosure, the connection between the first and second partitions 203 and 205 and the bottom wall 202 or the side wall 201 of the lower case 200 may employ a vibration welding process.

In the present disclosure, the cross-sectional shape of the conduit 204 may be circular, elliptical, polygonal, etc. The length of the conduit 204 is determined by the frequency of the noise that needs to be removed.

In the present disclosure, the pore diameter of the porous region 207 may be 3mm to 20mm, and the diameter size of each pore may be the same or different; each aperture may be circular, oval or polygonal.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities already described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air filtering device of a vehicle comprises a filter element and a shell, wherein an air inlet surface of the filter element and the shell enclose a filter cavity, the shell is provided with an air inlet, the air filtering device is characterized in that,

The air filter device further comprises a first partition plate and a pipeline, wherein the first partition plate is arranged in the filter cavity and divides the filter cavity into:

The pipeline penetrates through the first partition board, the expansion cavity and the resonant cavity are communicated through the pipeline, and the resonant cavity communicated with the pipeline is formed into a Helmholtz resonant cavity;

the air filtering device comprises a flow guiding structure which is arranged in the expansion cavity and is from the air inlet to the filter element, and air flows from the air inlet to the filter element along the flow guiding structure;

The first partition plate is provided with an arc-shaped plate surface, the arc-shaped plate surface is provided with an arc extending from a shell at one side of the air inlet to one end of the filter element far away from the air inlet, and the arc-shaped plate surface forms the flow guide structure;

The first separator is further provided with a porous area, the porous area is provided with at least two holes, the air filtering device further comprises a second separator, the second separator is arranged in the resonant cavity and divides the resonant cavity into at least two parts, the resonant cavity is provided with a part which is communicated with the expansion cavity through the porous area to form a porous resonant cavity, and a part which is communicated with the expansion cavity through the pipeline to form a Helmholtz resonant cavity, and the volume of the porous resonant cavity is smaller than that of the Helmholtz resonant cavity.

2. The air filter device of claim 1, wherein the housing has a side wall and a bottom wall, the air inlet is located in the side wall, the bottom wall is connected to the side wall, a portion of the side wall, the first baffle and the filter cartridge enclose the expansion chamber, and another portion of the side wall, the first baffle and the bottom wall enclose the resonant chamber.

3. The air filter device of a vehicle according to claim 1, wherein the number of the pipes is at least two, the air filter device further comprising a second partition plate which is provided inside the resonant cavity and divides the resonant cavity into at least two parts, the resonant cavities of the respective parts being respectively communicated with the expansion cavity through the respective pipes.

4. An air filter device for a vehicle according to claim 3, wherein the second partition extends in a depth direction of the air filter device and divides the at least two portions in the resonance chamber perpendicularly to the depth direction.

5. A vehicular air filter device according to claim 3, wherein the resonant cavity is divided into at least two portions of different volumes.

6. A vehicular air filter device according to claim 3, wherein the housing has a side wall and a bottom wall, the air inlet is located at the side wall, the side wall is connected to the bottom wall, and a portion of the second partition, a portion of the first partition, and a portion of the bottom wall enclose a portion of the resonant cavity, so that the portion of the resonant cavity is cylindrical.

7. The air filter device of a vehicle according to claim 1, wherein an axial direction of the duct is perpendicular to an axial direction of the intake port.

8. The air filter device of a vehicle of claim 1, further comprising a reinforcing structure that connects the housing and the second partition simultaneously.

9. An air intake system for a vehicle comprising a clean air duct, a dirty air duct and an air filter arrangement connected therebetween, wherein the air filter arrangement is as claimed in any one of claims 1 to 8.