CN220134147U - Air cleaner, air suspension system and vehicle - Google Patents

Abstract

The utility model provides an air cleaner, air suspension system and vehicle, air cleaner includes the shell, the shell both ends are provided with first runner pipe and the second runner pipe with the inside intercommunication of shell, the inside first amortization chamber and the second amortization chamber of being formed with of shell, first runner pipe stretches into first amortization intracavity and communicates with first amortization chamber through the intercommunication passageway, first runner pipe export and second amortization chamber intercommunication, second amortization intracavity is equipped with the filter core, second runner pipe and second amortization chamber intercommunication, second runner pipe is located the one side that first runner pipe was kept away from to the filter core. The sound wave generated by the air flow in the first flow pipe enters the first silencing cavity through the communication channel so as to design the Helmholtz silencer with specific frequency, so that the air flow bombing sound in the first flow pipe is eliminated, and the noise of the air flow in the second silencing cavity can be reduced due to the change of the acoustic impedance at the junction between the second silencing cavity and the first flow pipe and the second flow pipe when the air flows, and the NVH characteristic requirement of a vehicle is met.

Description

Air cleaner, air suspension system and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to an air filter, an air suspension system and a vehicle.

Background

With the continuous improvement of automobile technology, the requirements of passengers on noise in a vehicle are higher and higher, and in a vehicle air suspension system, when the vehicle air suspension runs, the air storage tank and the air compressor are easy to generate air suction bombing and exhaust flow noise in the air suction and exhaust process. The noise elimination effect of the air flow noise generated by the air compressor of the existing air suspension filter is limited, the air flow noise is transmitted to the inside of the vehicle to influence the driving and riding experience of passengers, and the requirements of the passengers on the NVH characteristics of the vehicle cannot be met.

Disclosure of Invention

In order to solve the technical problem, the present disclosure provides an air cleaner, an air suspension system and a vehicle.

The first aspect of the present disclosure provides an air cleaner, which comprises a housing, the both ends of shell be provided with the inside first runner pipe and the second runner pipe of intercommunication of shell, the inside of shell is formed with first amortization chamber and second amortization chamber, first runner pipe stretches into first amortization intracavity and through the intercommunication passageway with first amortization chamber intercommunication, the export of first runner pipe with second amortization chamber intercommunication, be provided with the filter core in the second amortization chamber, the second runner pipe with second amortization chamber intercommunication, just the second runner pipe is located the filter core is kept away from one side of first runner pipe.

Optionally, the shell comprises a first shell and a second shell, the first shell and the second shell are hollow columns, the first flow pipe penetrates through one side part of the first shell and stretches into the first shell, and the other side part of the first shell is provided with an opening;

the second casing includes continuous first post section and second post section, the diameter of first post section is less than the second post section, first post section passes through the opening stretches into in the first casing, the second post section be close to the tip of first post section with first casing is formed with open-ended tip butt, the inner wall of first casing with the outer wall of first post section encloses jointly and forms first amortization chamber.

Optionally, the first flow pipe and the first column section are both cylindrical structures, at least part of the pipe body of the first flow pipe stretches into the first column section, the first flow pipe and the first column section are concentrically arranged, a gap is formed between the outer wall of the first flow pipe and the inner wall of the first column section, and the gap is formed into the communication channel.

Optionally, a support protrusion is provided on one of the inner wall of the first column section and the outer wall of the first flow tube, the support protrusion being in abutment with the other of the inner wall of the first column section and the outer wall of the first flow tube.

Optionally, the shell further includes a third shell and a fourth shell, the third shell and the fourth shell are hollow columns, one end of the third shell is abutted to the end of the second column Duan Yuan away from the first column section, the other end of the third shell is abutted to one end of the fourth shell, and a communication port communicated with the second flow tube is formed in a part of side walls of the other end of the fourth shell.

Optionally, the second column section, the third casing and the fourth casing are of cylindrical structures with the same diameter, and the first column section, the second column section, the third casing and the fourth casing enclose together to form the second silencing cavity in an expanding arrangement.

Optionally, the second column section is close to be provided with first spacing portion on the inner wall of third casing, the third casing is close to be provided with second spacing portion on the inner wall of fourth casing, first spacing portion with second spacing portion all stretches into in the second amortization chamber, the filter core sets up first spacing portion with between the second spacing portion.

Optionally, a first bump is arranged on the outer wall of the first shell close to the second column section, a first groove is formed on the outer wall of the second column section close to the first shell, and the first bump is inserted into the first groove;

a second lug is arranged on the outer wall, close to the third shell, of the second column section, a second groove is formed on the outer wall, close to the second column section, of the third shell, and the second lug is inserted into the second groove;

the third lug is arranged on the outer wall of the fourth shell, which is close to the third shell, and the third groove is arranged on the outer wall of the third shell, which is close to the fourth shell, and the third lug is inserted into the third groove.

A second aspect of the present disclosure provides an air suspension system comprising an air cleaner as described in any one of the above.

A third aspect of the present disclosure provides a vehicle comprising an air suspension system as described above.

Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:

the utility model provides an air cleaner, be provided with first runner pipe and the second runner pipe of the inside intercommunication of shell at the both ends of shell, the inside of shell is formed with first amortization chamber and second amortization chamber, first runner pipe stretches into first amortization intracavity and communicates with first amortization chamber through the intercommunication passageway, be provided with the filter core in the second amortization chamber, be used for effectively filtering the air that flows through second amortization chamber, second runner pipe and second amortization chamber intercommunication, and the second runner pipe is located the filter core and keeps away from one side of first runner pipe, air after filtering passes through the discharge of second runner pipe, make the sound wave that the air flow produced in the first runner pipe can get into first amortization intracavity through the intercommunication passageway, thereby design out the helm silencer of specific frequency, eliminate the sound of air flow in the first runner pipe, the export and the second amortization chamber intercommunication of second runner pipe, the air in the second runner pipe can flow into the second amortization intracavity, because the in-process of the air in the first runner pipe flows into the second runner pipe, the in-process through second runner pipe and the second runner pipe, the second runner pipe and the noise reduction between the second runner pipe and the second runner pipe, thereby the noise reduction can be realized to the second runner pipe and the noise reduction in the second runner pipe, the noise can be realized, the second runner pipe and the noise reduction vehicle has the noise reduction to the second runner pipe and the noise reduction, and the noise reduction has, and the noise reduction to the noise reduction in the passenger, and the vehicle has, and noise reduction to the noise reduction.

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.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a cross-sectional view of an air cleaner in accordance with one embodiment of the present disclosure;

FIG. 2 is a partial cross-sectional view of an air cleaner in accordance with one embodiment of the present disclosure;

FIG. 3 is a cross-sectional view taken along the direction a-a in FIG. 2;

FIG. 4 is a cross-sectional view taken along the direction b-b in FIG. 2;

FIG. 5 is an enlarged view of a portion of an air cleaner of an embodiment of the present disclosure;

FIG. 6 is a region view of a first sound attenuation chamber in accordance with an embodiment of the present disclosure;

FIG. 7 is a region view of a second sound attenuation chamber in accordance with an embodiment of the present disclosure;

FIG. 8 is a graph of transmission loss of a first muffling chamber according to one embodiment of the present disclosure;

fig. 9 is a graph of transmission loss of a second muffling chamber of one embodiment of the present disclosure.

Reference numerals:

1. a first flow tube; 11. a communication passage; 2. a second flow tube; 3. a first sound deadening chamber; 31. a first housing; 32. a second housing; 321. a first column section; 3221. a first limit part; 322. a second column section; 33. a third housing; 331. a second limit part; 34. a fourth housing; 4. a second sound deadening chamber; 5. a filter element; 6. a support protrusion; 71. a first bump; 72. a first groove; 73. a second bump; 74. a second groove; 75. a third bump; 76. and a third groove.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Referring to fig. 1 to 9, some embodiments of the present disclosure provide an air cleaner including a housing, both ends of the housing are provided with a first flow pipe 1 and a second flow pipe 2 communicated with the inside of the housing, the inside of the housing is formed with a first silencing cavity 3 and a second silencing cavity 4, the first flow pipe 1 extends into the first silencing cavity 3 and is communicated with the first silencing cavity 3 through a communication channel 11, an outlet of the first flow pipe 1 is communicated with the second silencing cavity 4, a filter element 5 is provided in the second silencing cavity 4, the second flow pipe 2 is communicated with the second silencing cavity 4, and the second flow pipe 2 is located at a side of the filter element 5 away from the first flow pipe 1.

Through foretell setting, be provided with the first runner pipe 1 and the second runner pipe 2 of the inside intercommunication of shell at the both ends of shell, the inside of shell is formed with first amortization chamber 3 and second amortization chamber 4, first runner pipe 1 stretches into in the first amortization chamber 3 and communicates with first amortization chamber 3 through communication channel 11, be provided with filter core 5 in the second amortization chamber 4, be used for effectively filtering the air that flows through second amortization chamber 4, second runner pipe 2 and second amortization chamber 4 intercommunication, and second runner pipe 2 is located filter core 5 and keeps away from one side of first runner pipe 1, air after filtering is discharged through second runner pipe 2, make the sound wave that air flow produced in the first runner pipe 1 can get into in the first amortization chamber 3 through communication channel 11, thereby design the helm silencer of specific frequency, the bombing sound that air flows in the second runner pipe 1 is eliminated, the export and the second amortization chamber 4 intercommunication, the air in the second runner pipe 1 can flow in the second runner pipe 4, because the air in the second runner pipe 1 flows in the second runner pipe 4 and the second runner pipe 2 through the second runner pipe 2, thereby the noise reduction in-free air flow the second runner pipe 2 and the noise reduction device, thereby the noise reduction is realized to the second runner pipe 1, the noise reduction is realized and the vehicle noise reduction in the second runner pipe 2, the noise reduction and the vehicle noise reduction is experienced in the second runner pipe 2, and the noise reduction and the air flow in the noise reduction and the second runner pipe 2 has been carried out in the noise reduction in the air flow and the noise reduction in the second runner pipe 2, and has been carried out the noise reduction and has 3. And integrate amortization chamber and air filter in air cleaner's inside for air cleaner's integrated level is higher. In the description of the present disclosure, the air cleaner is placed inside the vehicle, and the inside and the outside are the centers close to the air flow direction, i.e., the inside, and the center far from the air flow direction, with respect to the center of the air cleaner in the air flow direction. The directional terms of the present disclosure are merely for convenience of description and are not intended to limit the specific direction or the like of the air cleaner of the present disclosure.

The arrangement modes among the first silencing cavity 3, the communication channel 11 and the first flow pipe 1 can be flexibly adjusted according to different use requirements. For example, a communication channel 11 is arranged in the first silencing cavity 3, after the first flow pipe 1 stretches into the first silencing cavity 3, a communication port communicated with the communication channel 11 is formed in a part of the pipe wall of the first flow pipe 1, so that a resonant cavity can be formed in the first silencing cavity 3, a part of air flow in the first flow pipe 1 enters the communication channel 11 through the communication port, then enters the first silencing cavity 3 for silencing, and the rest of air flow in the first flow pipe 1 flows into the second silencing cavity 4 for silencing. According to the helmholtz resonator silencing principle, the length of the communication channel 11 can be adjusted according to different silencing requirements to change the silencing frequency of the first silencing cavity 3 so as to achieve a better silencing effect.

In some embodiments, referring to fig. 1 to 7, the housing includes a first housing 31 and a second housing 32, the first housing 31 and the second housing 32 are hollow cylinders, the first flow pipe 1 penetrates one side portion of the first housing 31 and extends into the first housing 31, and the other side portion of the first housing 31 has an opening; the second casing 32 includes a first pillar section 321 and a second pillar section 322 that link to each other, and the diameter of first pillar section 321 is less than second pillar section 322, and first pillar section 321 stretches into in the first casing 31 through the opening, and the tip that second pillar section 322 is close to first pillar section 321 is formed with open-ended tip butt with first casing 31, and the inner wall of first casing 31 encloses jointly with the outer wall of first pillar section 321 and forms first amortization chamber 3.

In some embodiments, the first flow tube 1 and the first post section 321 are both in a cylindrical structure, at least part of the tube body of the first flow tube 1 extends into the first post section 321, the first flow tube 1 and the first post section 321 are concentrically arranged, and a gap is formed between the outer wall of the first flow tube 1 and the inner wall of the first post section 321, and the gap is formed as the communication channel 11. By the arrangement of the above embodiment, the first pillar section 321 is sleeved outside the first flow pipe 1 in the first silencing chamber 3, so that a concentric pipe-like structure is formed between the first pillar section 321 and the first flow pipe 1, and a helmholtz silencer is formed.

The first silencing chamber 3 adopts a concentric helmholtz silencing principle, which is mainly used for reducing noise in a low frequency band, and the concentric helmholtz region is shown in fig. 6, assuming that the inner diameter of an inner tube of a concentric tube is D1, the outer diameter of the inner tube is D2, and the inner diameter of an outer tube is D1 and the outer diameter of the outer tube is D2.

Equivalent diameter ofConcentric helmholtz noise elimination peak frequency: />

Where c is the sound velocity at the corresponding temperature, ae is the equivalent cross-sectional area, le is the equivalent length (greater than the concentric overlapping length between the first flow pipe 1 and the first stem 321 relative to the length of the first sound-deadening chamber 3, and is related to the shape of the first sound-deadening chamber 3, equivalent to the radius of a sphere), and Ve is the equivalent volume of the first sound-deadening chamber 3. The Helmholtz muffler corresponds to the peak damping (transmission loss TL), and is positively correlated with the equivalent volume Ve, negatively correlated with Ae, and negatively correlated with Le. I.e. the longer the concentric overlap length between the first flow tube 1 and the first leg 321, the lower the muffling frequency of the first muffling chamber 3, the lower the corresponding muffling low-frequency peak frequency in the present embodiment is, for example, 50Hz.

In the practical application process, the first flow pipe 1 can be further provided with a through hole penetrating through the pipe wall of the first flow pipe 1, one end of the communication channel 11 is butted into the through hole, the other end of the communication channel stretches into the first silencing cavity 3, the air noise reduction effect of the first flow pipe 1 can also be achieved, the helmholtz resonator principle is adopted by the silencing structure, and the details are not repeated here.

In some embodiments, the supporting convex parts 6 are arranged on one of the inner wall of the first post section 321 and the outer wall of the first flow tube 1, the number and the shape of the supporting convex parts 6 can be flexibly set according to the requirement, the supporting convex parts 6 are axially arranged along concentric tubes, the convex length is shorter, and the supporting convex parts 6 are abutted with the other one of the inner wall of the first post section 321 and the outer wall of the first flow tube 1. Referring to fig. 3, a supporting protrusion 6 is disposed on an inner wall opposite to the first pillar section 321, and the supporting protrusion 6 is in fit and abutting connection with an outer wall of the first runner pipe 1, so that the supporting protrusion is supported between the first runner pipe 1 and the first pillar section 321, structural stability of the first runner pipe 1 and the first pillar section 321 is guaranteed, shaking or deviation of the first runner pipe 1 in the first pillar section 321 is prevented, stability of a noise elimination peak is affected, and a section of a concentric region between the first runner pipe 1 and the first pillar section 321 which are concentrically disposed is kept stable.

In some embodiments, the housing further includes a third shell 33 and a fourth shell 34, where the third shell 33 and the fourth shell 34 are hollow cylinders, one end of the third shell 33 abuts against an end of the second post section 322 away from the first post section 321, the other end of the third shell 33 abuts against one end of the fourth shell 34, and a communication port communicating with the second flow tube 2 is formed on a part of a side wall of the other end of the fourth shell 34, so that air in the fourth shell 34 is discharged through the second flow tube 2.

Further, referring to fig. 1, the second post section 322, the third casing 33 and the fourth casing 34 have a cylindrical structure with the same diameter, and the first post section 321, the second post section 322, the third casing 33 and the fourth casing 34 jointly enclose to form a second silencing cavity 4 in an expanded arrangement, so that the second silencing cavity 4 forms an expanded silencer, which is mainly used for reducing noise in a middle frequency band, and an expanded silencer area is shown in fig. 7.

Peak frequency of the expansion chamber noise cancellation amount (transmission loss calculation):expansion ratio->

Where Le is the length of the second sound deadening chamber 4, n is the corresponding nth peak, whose peak frequency is only related to the expansion chamber length. The expansion muffler corresponds to the peak sound reduction amount (transmission loss TL), is positively correlated with the expansion ratio m, and is independent of Le, assuming that the expansion chamber inner diameter is D3 and the pipe inner diameter is D3.

It should be noted that, the above calculation formulas for the first sound-deadening chamber 3 and the second sound-deadening chamber 4 correspond to the regular shapes thereof, and the actual analysis may use acoustic finite elements (similar to the 3D analysis method) to perform TL analysis for structures of different shapes.

Through the setting in the above-mentioned embodiment, first amortization chamber 3 can form the low frequency amortization chamber, and second amortization chamber 4 can form the medium frequency amortization chamber for air cleaner is when satisfying filtering quality, compromise well low frequency silence ability, and the resistance is little, does not produce extra high frequency flow noise simultaneously. In the practical application process, the frequency is generally lower than 200Hz, the frequency is intermediate between 200 and 800Hz, and the frequency is higher than 800 Hz.

In some embodiments, the inner wall of the second column section 322, which is close to the third casing 33, is provided with a first limiting portion 3221, the inner wall of the third casing 33, which is close to the fourth casing 34, is provided with a second limiting portion 331, the first limiting portion 3221 and the second limiting portion 331 extend into the second silencing cavity 4, and the filter element 5 is disposed between the first limiting portion 3221 and the second limiting portion 331, so as to limit and fix the filter element 5, and prevent the filter element 5 from moving. In the practical application process, the filter element 5 may be microporous filter paper treated by resin or filter paper or carbon powder.

Specifically, the outer wall of the first shell 31, which is close to the second column section 322, is provided with a first bump 71, the outer wall of the second column section 322, which is close to the first shell 31, is provided with a first groove 72, and the first bump 71 is inserted into the first groove 72;

the outer wall of the second column section 322, which is close to the third shell 33, is provided with a second protruding block 73, the outer wall of the third shell 33, which is close to the second column section 322, is provided with a second groove 74, and the second protruding block 73 is inserted into the second groove 74;

the outer wall of the fourth shell 34, which is close to the third shell 33, is provided with a third protruding block 75, the outer wall of the third shell 33, which is close to the fourth shell 34, is provided with a third groove 76, and the third protruding block 75 is inserted into the third groove 76. It should be noted that, every two adjacent shells can also be fixedly connected by means of screw connection, welding or clamping connection.

In some embodiments, the material of the shell may be plastics or metals with low hardness, and the volume inside the shell may be less than 1L. The outer wall of the housing may deform to avoid other components.

Still other embodiments of the present disclosure provide an air suspension system, which includes an air tank, an air compressor (abbreviated as air compressor) and an air filter that are sequentially connected, wherein the air tank, the air compressor and the air filter are sequentially communicated through a pipeline. When the air storage tank is in an inflated state, the air flows to the second flow pipe 2 through the first flow pipe 1, the first flow pipe 1 can be used as an inlet of an air filter, the second flow pipe 2 can be used as an outlet of the air filter, specifically, the air can enter the first silencing cavity 3 through the first flow pipe 1 under the pressure of the air compressor to be silenced, then is filtered through the filter element 5 and is silenced through the second silencing cavity 4, and then enters the air compressor through the second flow pipe 2 to flow into the air storage tank. When the air storage tank is in an exhaust state, the air flows to the first flow pipe 1 through the second flow pipe 2, the second flow pipe 2 can be used as an inlet of the air filter, the first flow pipe 1 can be used as an outlet of the air filter, specifically, the air compressor does not operate at the moment, and the air in the air storage tank can enter the second silencing cavity 4 through the second flow pipe 2 under the pressure of the air storage tank to be silenced and filtered, and then enters the first silencing cavity 3 to be silenced and is discharged through the first flow pipe 1.

Still further embodiments of the present disclosure provide a vehicle, including the air suspension system of the foregoing embodiments, where technical features of the air suspension system used in the vehicle may be referred to the air suspension system of the foregoing embodiments, and will not be described in detail herein.

Referring to fig. 8 and 9, fig. 8 and 9 show graphs of transmission losses of the first silencing cavity 3 and the second silencing cavity 4 in the air filter, and according to the schematic illustration, it can be seen that the first silencing cavity 3 can reduce noise in the frequency range of 0-100Hz, and particularly the noise reduction effect in the frequency range of 50Hz is obvious. The second silencing cavity 4 can reduce the noise in the frequency range of 0-800Hz, and the noise reduction effect is obvious when the frequency range of 50-200Hz is reduced.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.

The above is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides an air cleaner, its characterized in that, includes the shell, the both ends of shell be provided with the inside first runner pipe and the second runner pipe that communicates of shell, the inside of shell is formed with first amortization chamber and second amortization chamber, first runner pipe stretches into first amortization intracavity and through the intercommunication passageway with first amortization chamber intercommunication, the export of first runner pipe with second amortization chamber intercommunication, be provided with the filter core in the second amortization chamber, the second runner pipe with second amortization chamber intercommunication, just the second runner pipe is located the filter core is kept away from one side of first runner pipe.

2. The air cleaner of claim 1, wherein the housing includes a first shell and a second shell, the first shell and the second shell each being hollow cylinders, the first flow tube extending through one side of the first shell and into the first shell, the other side of the first shell having an opening;

the second casing includes continuous first post section and second post section, the diameter of first post section is less than the second post section, first post section passes through the opening stretches into in the first casing, the second post section be close to the tip of first post section with first casing is formed with open-ended tip butt, the inner wall of first casing with the outer wall of first post section encloses jointly and forms first amortization chamber.

3. The air cleaner of claim 2, wherein the first flow tube and the first column segment are each of a cylindrical configuration, at least a portion of the tube body of the first flow tube extends into the first column segment, the first flow tube and the first column segment are concentrically disposed, and a gap is formed between an outer wall of the first flow tube and an inner wall of the first column segment, the gap being formed as the communication channel.

4. The air cleaner of claim 3, wherein one of the inner wall of the first post segment and the outer wall of the first flow tube is provided with a support protrusion that abuts the other of the inner wall of the first post segment and the outer wall of the first flow tube.

5. The air cleaner according to claim 2, wherein the housing further includes a third case and a fourth case, the third case and the fourth case are hollow cylinders, one end of the third case is abutted against an end of the second pillar Duan Yuan from the first pillar section, the other end of the third case is abutted against one end of the fourth case, and a communication port communicating with the second flow tube is formed in a part of a side wall of the other end of the fourth case.

6. The air cleaner of claim 5, wherein the second post segment, the third housing, and the fourth housing are cylindrical structures having the same diameter, and the first post segment, the second post segment, the third housing, and the fourth housing collectively enclose the second sound attenuation chamber in an expanded configuration.

7. The air cleaner of claim 5, wherein a first spacing portion is disposed on an inner wall of the second column section adjacent to the third housing, a second spacing portion is disposed on an inner wall of the third housing adjacent to the fourth housing, the first and second spacing portions each extend into the second muffler chamber, and the filter element is disposed between the first and second spacing portions.

8. The air cleaner of claim 5, wherein a first projection is disposed on an outer wall of the first housing adjacent the second column section, a first recess is formed on an outer wall of the second column section adjacent the first housing, and the first projection is inserted into the first recess;

a second lug is arranged on the outer wall, close to the third shell, of the second column section, a second groove is formed on the outer wall, close to the second column section, of the third shell, and the second lug is inserted into the second groove;

the third lug is arranged on the outer wall of the fourth shell, which is close to the third shell, and the third groove is arranged on the outer wall of the third shell, which is close to the fourth shell, and the third lug is inserted into the third groove.

9. An air suspension system comprising an air cleaner according to any one of claims 1-8.

10. A vehicle comprising the air suspension system of claim 9.