Filter muffler

Abstract

The present application discloses a filter muffler, wherein the filter muffler comprises a housing, a filter unit and a muffling unit, the housing forms a mounting passage, the filter unit and the muffling unit are both arranged in the mounting passage, so that when gas passes through the mounting passage, the muffling unit absorbs the noise of the gas, and the filter unit synchronously filters the impurities in the gas.

Description

Technical Field

[0001] This application relates to the field of filtration and noise reduction technology, and more particularly to filtration and noise reduction devices. Background Technology

[0002] Air suspension systems are a core component of high-end features in modern automobiles. When in operation, air suspension systems use an air compressor to control the inflation and deflation of air into the air springs, thereby regulating the internal air pressure of the air springs. This allows for adjustments to the vehicle's height and damping performance, ultimately enhancing driving comfort.

[0003] In existing technology, when air is drawn from the atmosphere into the air spring by an air compressor, a filter is connected to the air compressor's intake port through a pipe to prevent solid impurities in the atmosphere from scratching the air spring's interior and thus affecting the lifespan of the air suspension system. Simultaneously, to prevent excessive noise from the air compressor drawing air from the intake port, another pipe connects the filter to the muffler. Therefore, during vehicle assembly, the filter, muffler, and the pipe connecting the filter and muffler need to be secured separately, which reduces the assembly efficiency of the air suspension system.

[0004] Meanwhile, since the filter is connected to the air compressor's intake port through a pipe, and another pipe connects the filter to the muffler, there are a total of four connection points at the two ends of the two pipes. Sealing these four connection points takes time, which in turn affects the assembly efficiency of the air suspension system. Utility Model Content

[0005] To address the aforementioned technical problems and achieve at least one advantage of this application, this application provides a filter silencer, wherein the filter silencer comprises:

[0006] A housing, the housing including a housing body and a connecting closure, the housing body forming an installation channel, the connecting closure being disposed on the housing body and located at one axial end of the installation channel, the connecting closure being used to close one end of the installation channel, the connecting closure having a suction channel;

[0007] Filtering unit, the filtering unit comprising:

[0008] A first mounting body is disposed at the end of the mounting channel near the connecting closure in the axial direction of the mounting channel; the first mounting body is disposed in the connecting closure.

[0009] A second mounting body is disposed in the mounting channel in a manner that maintains its position relative to the first mounting body and is spaced at a predetermined distance, wherein the radial dimension of the second mounting body is smaller than the inner diameter of the mounting channel;

[0010] A filter element is disposed between a first mounting body and a second mounting body. The two ends of the filter element along the axial direction of the mounting channel are respectively disposed on the first mounting body and the second mounting body. The filter element is arranged around the axis of the mounting channel and encloses an air passage space. The filter element has a plurality of micropores. The air passage space is kept in communication with the mounting channel through the plurality of micropores of the filter element. The filter element is used to filter impurities in the gas passing through the plurality of micropores. The first mounting body has at least one connecting hole. One end of the suction channel is kept in communication with the air passage space through the connecting hole.

[0011] A noise reduction unit is disposed in the mounting channel and located at the end of the mounting channel axially away from the connecting closure member. The noise reduction unit is used to absorb noise from the gas entering the mounting channel.

[0012] According to one embodiment of this application, the second mounting body portion extends toward the inner wall of the mounting channel to form a plurality of wall-adhering portions, and the plurality of wall-adhering portions respectively remain abutting against the inner wall of the mounting channel.

[0013] According to one embodiment of this application, the housing further includes a partition portion disposed on the inner wall of the mounting channel, and the partition portion is located between the silencing unit and the second mounting body, the partition portion and the second mounting body are spaced apart by a predetermined distance, and the silencing unit remains attached to the partition portion.

[0014] According to one embodiment of this application, the connecting closure extends away from the shell body at a location corresponding to the communicating hole to form a connecting portion, the connecting portion having the suction channel provided therein, and one end of the suction channel being connected to the air passage space through the communicating hole.

[0015] According to one embodiment of this application, the connecting closure portion extends into the mounting channel to form a fixing portion, the first mounting body forms a fixing groove at a location corresponding to the fixing portion that is adapted to the fixing portion, and the fixing portion of the connecting closure is inserted into the fixing groove in an interference fit manner with the fixing groove.

[0016] According to one embodiment of this application, the fixing portion extends along a direction perpendicular to the fixing portion to form a plurality of protrusions, so that when the fixing portion is inserted into the fixing groove, the plurality of protrusions of the fixing portion press against the inner wall of the fixing groove and generate elastic deformation, thereby increasing the friction between the fixing portion and the inner wall of the fixing groove.

[0017] According to one embodiment of this application, the connecting closure portion extends along the axial direction of the mounting channel to form a first extension portion, the first extension portion being held against the outer edge of the end of the mounting channel, and the first extension portion of the connecting closure portion being fixedly connected to the outer edge of the end of the mounting channel of the shell body by laser welding.

[0018] According to one embodiment of this application, the first mounting body extends along an axis perpendicular to the mounting channel to form a stabilizing portion, the stabilizing portion being disposed between an end of the housing body and the connecting closure, and the two ends of the stabilizing portion along the axis of the mounting channel being respectively attached to the housing body and the connecting closure.

[0019] According to one embodiment of this application, the housing further includes a sealing member disposed on the housing body and located at the end of the mounting channel of the housing body away from the connecting closure member, the sealing member being used to prevent the silencing unit from moving within the mounting channel.

[0020] According to one embodiment of this application, the connecting hole is formed on the axis of the mounting channel, the connecting portion is formed on the axis of the mounting channel, and the suction channel is formed on the axis of the mounting channel. Attached Figure Description

[0021] Figure 1 A perspective view of a preferred embodiment of this application is shown.

[0022] Figure 2 A cross-sectional view of a preferred embodiment of this application is shown.

[0023] Figure 3 It shows Figure 2 A magnified view of a portion of point A in the diagram.

[0024] Figure 4 An exploded view of a preferred embodiment of this application is shown.

[0025] Figure 5 It shows Figure 4 A magnified view of a portion of point B in the diagram.

[0026] Figure 6A perspective view of the filtering unit described in a preferred embodiment of this application is shown. Detailed Implementation

[0027] The following description is intended to disclose this application and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of this application defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of this application.

[0028] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0029] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0030] refer to Figures 1 to 6 A preferred embodiment of the filter silencer according to this application will be described in detail below, wherein the filter silencer includes a housing 10, a filter unit 20 and a silencer unit 30.

[0031] Specifically, the housing 10 includes a housing body 11 and a connecting closure 12. The housing body 11 forms an installation channel. The connecting closure 12 is disposed on the housing body 11 and is located at one end of the installation channel along its axial direction, the connecting closure 12 being used to close one end of the installation channel. The connecting closure 12 has a suction channel 12101.

[0032] The filter unit 20 includes a first mounting body 21, a second mounting body 22, and a filter element 23.

[0033] The first mounting body 21 is disposed at the end of the mounting channel near the connecting closure 12 in the axial direction, and the first mounting body 21 is disposed on the connecting closure 12.

[0034] The second mounting body 22 is positioned in the mounting channel such that it is opposite to the first mounting body 21 and spaced at a predetermined distance. The radial dimension of the second mounting body 22 is smaller than the inner diameter of the mounting channel, that is, there is a gap between the periphery of the second mounting body 22 and the inner wall of the mounting channel to allow gas to pass through.

[0035] The filter element 23 is disposed between the first mounting body 21 and the second mounting body 22, and its two ends along the axial direction of the mounting channel are respectively disposed on the first mounting body 21 and the second mounting body 22. The filter element 23 is arranged around the axis of the mounting channel and encloses an air passage space 2301. The filter element 23 has a plurality of micropores, and the air passage space 2301 is kept in communication with the mounting channel through the plurality of micropores of the filter element 23. The filter element 23 is used to filter impurities in the gas passing through the plurality of micropores. The first mounting body 21 has at least one connecting hole 2101. One end of the suction channel 12101 is kept in communication with the air passage space 2301 through the connecting hole 2101.

[0036] The silencing unit 30 is disposed in the mounting channel and is located at the end of the mounting channel away from the connecting closure 12 in the axial direction. The silencing unit 30 is used to absorb noise from the gas entering the mounting channel.

[0037] It should be noted that when gas is drawn from the connecting hole 2101 through the suction channel 12101, the gas will enter the installation channel from the end of the installation channel away from the connecting closure 12, and pass through the silencing unit 30, several micropores of the filter element 23, the air passage space 2301 and the connecting hole 2101 in sequence, and then enter the suction channel 12101.

[0038] Since the gas passing through the silencing unit 30 absorbs noise and the gas passing through the micropores of the filter element 23 is filtered to remove impurities, the filter silencer can filter impurities in the gas while simultaneously silencing the gas.

[0039] Understandably, compared to the method of connecting the air compressor intake of the air suspension system to a filter via a pipe and connecting the muffler to the filter via another pipe to achieve noise reduction and impurity filtration of the gas entering the intake, this application only requires connecting the air compressor intake of the air suspension system to the end of the suction channel 12101 away from the housing body 11 via a pipe. The gas can then be simultaneously silenced and impurities filtered by the filter muffler. This simplifies the air intake process of the air compressor intake, reduces the time spent on manual assembly, improves the overall assembly efficiency of the air suspension system, and reduces material costs. Since this application only requires fixing the filter muffler during use, it can reduce manual operation time, reduce the complexity of manual operation, and improve the efficiency of manual operation.

[0040] Furthermore, compared to the method of connecting the air compressor intake of the air suspension system to the filter through a pipe and connecting the muffler to the filter through another pipe to achieve noise reduction and impurity filtration of the gas entering the intake, this application can simultaneously reduce noise and filter impurities of the gas through the filter muffler during use, thus having the advantage of occupying less space.

[0041] Preferably, the silencing unit 30 includes sound-absorbing cotton. The silencing unit 30 is filled at the end of the mounting channel away from the connecting closure 12 in the axial direction, so as to absorb the noise energy in the gas passing through the silencing unit 30 through a plurality of pores, thereby achieving the purpose of silencing.

[0042] It is worth mentioning that, since the size of the pores in the silencing unit 30 is larger than the size of the micropores in the filter element 23, when gas is drawn from the connecting hole 2101 through the suction channel 12101, the gas first passes through the pores in the silencing unit 30 and then through the micropores in the filter element 23. This causes large particulate impurities in the gas to be trapped in the pores of the silencing unit 30, thus achieving coarse filtration of the gas by filtering the large particulate impurities through the pores of the silencing unit 30; and fine filtration of the gas by filtering the small particulate impurities through the micropores in the filter element 23. Because the gas undergoes secondary filtration, the frequency of replacement of the micropores in the filter element 23 due to clogging can be reduced, thereby extending the service life of the filter element 23.

[0043] Furthermore, it should be noted that the air compressor intake of the air suspension system is connected to the end of the suction channel 12101 away from the housing body 11 via a pipe, and the air compressor outlet is connected to the air spring. Gas can be drawn from the air compressor intake through the suction channel 12101 into the connecting hole 2101 to inflate the air spring of the air suspension system; or air can be blown from the air compressor intake through the suction channel 12101 into the connecting hole 2101 to release the gas inside the air spring.

[0044] When the air spring is inflated, gas is drawn from the connecting hole 2101 through the suction channel 12101, causing large particulate impurities in the gas to be trapped in the pores of the silencing unit 30, and small particulate impurities to be filtered into the micropores of the filter element 23. When the gas in the air spring is released, air is blown into the connecting hole 2101 through the suction channel 12101. At this time, the gas will pass sequentially from the mounting channel through the connecting hole 2101, the air passage space 2301, the micropores of the filter element 23, and the pores of the silencing unit 30, and then be discharged.

[0045] In this way, when the gas in the air spring is released, the several pores of the silencing unit 30 and the several micropores of the filter element 23 can be back-blown to prevent large and small particulate impurities from clogging the several pores of the silencing unit 30 and the several micropores of the filter element 23, thereby improving the service life of the silencing unit 30 and the filter element 23.

[0046] As an example, the filter element 23 is implemented as a pleated nonwoven filter cartridge.

[0047] Preferably, the second mounting body 22 extends towards the inner wall of the mounting channel to form a plurality of wall-adhering portions 221. The plurality of wall-adhering portions 221 are respectively held against the inner wall of the mounting channel to fix the position of the second mounting body 22 within the mounting channel, preventing the second mounting body 22 from shaking within the mounting channel, thereby improving the overall stability of the filter unit 20 within the mounting channel.

[0048] Specifically, the housing 10 further includes a partition 13. The partition 13 is disposed on the inner wall of the mounting channel and is located between the silencing unit 30 and the second mounting body 22. The partition 13 is spaced a predetermined distance from the second mounting body 22, and the end of the silencing unit 30 remains attached to the partition 13 so that the position of the silencing unit 30 is restricted by the obstruction of the partition 13.

[0049] Preferably, the partition 13 is implemented as an annular shape.

[0050] More preferably, the partition 13 is integrally formed with the shell body 11 to prevent the partition 13 from moving within the installation channel, thereby stably blocking the silencing unit 30 through the partition 13.

[0051] The connecting closure 12 extends away from the shell body 11 at a location corresponding to the communicating hole 2101 to form a connecting portion 121. The connecting portion 121 has the suction channel 12101. One end of the suction channel 12101 is connected to the air passage space 2301 through the communicating hole 2101.

[0052] In this embodiment, the connecting closure 12 extends into the mounting channel to form a fixing portion 122. The first mounting body 21 forms a fixing groove 2102 corresponding to the fixing portion 122, which is adapted to the fixing portion 122. The fixing portion 122 of the connecting closure 12 is inserted into the fixing groove 2102 in an interference fit manner, thereby placing the first mounting body 21 on the connecting closure 12. Alternatively, the first mounting body 21 extends into the connecting closure 12 to form the fixing portion 122, and the connecting closure 12 forms the fixing groove 2102 corresponding to the fixing portion 122, which is adapted to the fixing portion 122. The fixing portion 122 of the first mounting body 21 is inserted into the fixing groove 2102 in an interference fit manner.

[0053] Preferably, the fixing part 122 extends in a direction perpendicular to the fixing part 122 to form a plurality of protrusions, so that when the fixing part 122 is inserted into the fixing groove 2102, the plurality of protrusions 1221 of the fixing part 122 press against the inner wall of the fixing groove 2102 and generate elastic deformation, thereby increasing the friction between the fixing part 122 and the inner wall of the fixing groove 2102, preventing the fixing part 122 from disengaging from the fixing groove 2102, and thereby improving the stability of the connection between the connecting closure 12 and the first mounting body 21.

[0054] As an example, the connecting hole 2101 is formed on the axis of the mounting channel. The connecting portion 121 is formed on the axis of the mounting channel. Correspondingly, the suction channel 12101 is formed on the axis of the mounting channel.

[0055] Preferably, the fixing groove 2102 is annular and is formed on the outer periphery of the connecting hole 2101, and the fixing part 122 corresponds to the fixing groove 2102 along the axial direction of the mounting channel.

[0056] In this embodiment, the connecting closure 12 extends along the axial direction of the mounting channel to form a first extension 123. The first extension 123 remains attached to the outer edge of one end of the mounting channel. The first extension 123 of the connecting closure 12 is fixedly connected to the outer edge of one end of the mounting channel of the housing body 11 by laser welding, thereby enabling the connecting closure 12 to be disposed at one end of the mounting channel of the housing body 11. Alternatively, the connecting closure 12 can be disposed at one end of the mounting channel by threading the first extension 123 to the outer edge of one end of the mounting channel.

[0057] Preferably, the shell body 11 has a first connection limiting portion 111. The first extension portion 123 remains abutting against the first connection limiting portion 111. The first connection limiting portion 111 is used to determine whether the entire connecting closure member 12 is misaligned at its axial end in the mounting channel.

[0058] It should be noted that, since the connecting closure 12 is disposed at the end of the mounting channel with the first extension 123 abutting against the outer edge of the mounting channel, the slight misalignment of the first extension 123 is not easily noticeable. Therefore, due to the formation of the first connecting restriction 111, when the first extension 123 of the connecting closure 12 partially abuts against the first connecting restriction 111, a partial gap will be generated between the first extension 123 and the first connecting restriction 111, indicating that the connecting closure 12 as a whole is misaligned at the axial end of the mounting channel. Consequently, it is necessary to adjust the posture of the connecting closure 12 to prevent the first extension 123 of the misaligned connecting closure 12 from easily loosening and falling off from the outer edge of the mounting channel due to laser welding to fix the first extension 123 of the misaligned connecting closure 12 to the outer edge of the mounting channel. This ensures the stability of the connecting closure 12 when it is disposed at one end of the mounting channel.

[0059] Preferably, the first mounting body 21 extends along an axis perpendicular to the mounting channel to form a stabilizing portion 211. The stabilizing portion 211 is disposed between an end of the housing body 11 and the connecting closure 12, and the two ends of the stabilizing portion 211 along the axis of the mounting channel are respectively attached to the housing body 11 and the connecting closure 12.

[0060] In other words, when the connecting closure 12 is disposed at one end of the mounting channel, the stabilizing part 211 is pressed against the shell body 11 by the connecting closure 12, thereby improving the stability of the first mounting body 21 when it is disposed on the connecting closure 12, and at the same time improving the stability of the first mounting body 21 when it is disposed in the mounting channel, preventing the first mounting body 21 from shaking in the mounting channel.

[0061] Preferably, the housing 10 further includes a sealing member 14. The sealing member 14 is disposed on the housing body 11, and is located at the end of the mounting channel of the housing body 11 away from the connecting closure member 12. The sealing member 14 is used to prevent the silencing unit 30 from moving within the mounting channel. That is, when the silencing unit 30 is disposed in the mounting channel, movement of the silencing unit 30 within the mounting channel is prevented by the restriction of the sealing member 14 and the partition 13. The sealing member 14 has a plurality of vent holes 1401. The end of the mounting channel communicates with the outside through the plurality of vent holes 1401.

[0062] As an example, when gas is drawn from the connecting hole 2101 through the suction channel 12101, the gas passing through the several pores of the silencing unit 30 will cause the silencing unit 30 to press against the partition 13 to prevent the partition 13 from moving within the installation channel; when gas is blown into the connecting hole 2101 through the suction channel 12101, the gas passing through the several pores of the silencing unit 30 will cause the silencing unit 30 to press against the sealing member 14 to prevent the partition 13 from moving within the installation channel.

[0063] In this embodiment, the sealing member 14 extends along the axial direction of the mounting channel to form a second extension 141. The second extension 141 remains attached to the outer edge of the mounting channel away from the connecting closure member 12. The second extension 141 of the sealing member 14 is fixedly connected to the outer edge of the mounting channel of the housing body 11 by laser welding, so that the sealing member 14 is disposed at the end of the mounting channel of the housing body 11 away from the connecting closure member 12. Alternatively, the sealing member 14 can be disposed at the end of the mounting channel away from the connecting closure member 12 by threading the second extension 141 to the outer edge of the mounting channel away from the connecting closure member 12.

[0064] Preferably, the shell body 11 has a second connection limiting portion 112. The second extension portion 141 remains abutting against the second connection limiting portion 112. The second connection limiting portion 112 is used to determine whether the end of the sealing member 14 located in the mounting channel away from the connecting closure member 12 is misaligned.

[0065] It should be noted that, since the sealing member 14 is disposed at the end of the mounting channel away from the connecting closure member 12 with the second extension 141 abutting against the outer edge of the end of the mounting channel away from the connecting closure member 12, the slight misalignment of the second extension 141 is not easily noticeable. Therefore, due to the formation of the second connecting restriction part 112, when the second extension 141 of the sealing member 14 partially abuts against the second connecting restriction part 112, a partial gap will be generated between the second extension 141 and the second connecting restriction part 112, indicating that the sealing... The entire component 14 is tilted at the end of the mounting channel away from the connecting closure 12. Therefore, it is necessary to adjust the posture of the sealing component 14 to prevent the second extension 141 of the tilted sealing component 14 from easily loosening and falling off from the outer edge of the end of the mounting channel away from the connecting closure 12 due to the second extension 141 of the tilted sealing component 14 being fixedly connected to the outer edge of the end of the mounting channel away from the connecting closure 12 by laser welding. This ensures the stability of the sealing component 14 when it is set at the end of the mounting channel away from the connecting closure 12.

[0066] Those skilled in the art should understand that the embodiments of this application described above and shown in the accompanying drawings are merely examples and do not limit the scope of this application. The advantages of this application have been fully and effectively implemented. The functional and structural principles of this application have been demonstrated and explained in the embodiments, and any variations or modifications can be made to the implementation of this application without departing from the stated principles.

Claims

1. A filter silencer, characterized in that, The filter silencer includes: A housing, the housing including a housing body and a connecting closure, the housing body forming an installation channel, the connecting closure being disposed on the housing body and located at one axial end of the installation channel, the connecting closure being used to close one end of the installation channel, the connecting closure having a suction channel; Filtering unit, the filtering unit comprising: A first mounting body is disposed at the end of the mounting channel near the connecting closure in the axial direction of the mounting channel; the first mounting body is disposed in the connecting closure. A second mounting body is disposed in the mounting channel in a manner that maintains its position relative to the first mounting body and is spaced at a predetermined distance, wherein the radial dimension of the second mounting body is smaller than the inner diameter of the mounting channel; A filter element is disposed between a first mounting body and a second mounting body. The two ends of the filter element along the axial direction of the mounting channel are respectively disposed on the first mounting body and the second mounting body. The filter element is arranged around the axis of the mounting channel and encloses an air passage space. The filter element has a plurality of micropores. The air passage space is kept in communication with the mounting channel through the plurality of micropores of the filter element. The filter element is used to filter impurities in the gas passing through the plurality of micropores. The first mounting body has at least one connecting hole. One end of the suction channel is kept in communication with the air passage space through the connecting hole. A noise reduction unit is disposed in the mounting channel and located at the end of the mounting channel axially away from the connecting closure member. The noise reduction unit is used to absorb noise from the gas entering the mounting channel.

2. The filter silencer according to claim 1, characterized in that, The second mounting body extends toward the inner wall of the mounting channel to form a plurality of wall-adhering portions, and the plurality of wall-adhering portions respectively remain abutting against the inner wall of the mounting channel.

3. The filter silencer according to claim 2, characterized in that, The housing also includes a partition, which is disposed on the inner wall of the mounting channel and located between the silencing unit and the second mounting body. The partition and the second mounting body are spaced at a predetermined distance, and the silencing unit remains attached to the partition.

4. The filter silencer according to claim 3, characterized in that, The connecting closure extends away from the shell body at a location corresponding to the communication hole to form a connecting portion. The connecting portion is provided with the suction channel, and one end of the suction channel is connected to the air passage through the communication hole.

5. The filter silencer according to claim 4, characterized in that, The connecting closure extends into the mounting channel to form a fixing part, and the first mounting body forms a fixing groove at a location corresponding to the fixing part that is adapted to the fixing part. The fixing part of the connecting closure is inserted into the fixing groove in an interference fit manner.

6. The filter silencer according to claim 5, characterized in that, The fixing portion extends along a direction perpendicular to the fixing portion to form a plurality of protrusions, so that when the fixing portion is inserted into the fixing groove, the plurality of protrusions of the fixing portion press against the inner wall of the fixing groove and generate elastic deformation, thereby increasing the friction between the fixing portion and the inner wall of the fixing groove.

7. The filter silencer according to claim 6, characterized in that, The connecting closure portion extends along the axial direction of the mounting channel to form a first extension portion, the first extension portion being attached to the outer edge of the end of the mounting channel, and the first extension portion of the connecting closure portion being fixedly connected to the outer edge of the end of the mounting channel of the shell body by laser welding.

8. The filter silencer according to claim 7, characterized in that, The first mounting body extends along an axis perpendicular to the mounting channel to form a stabilizing portion, which is disposed between the end of the housing body and the connecting closure, and the two ends of the stabilizing portion along the axis of the mounting channel are respectively attached to the housing body and the connecting closure.

9. The filter silencer according to claim 8, characterized in that, The housing also includes a sealing member disposed on the housing body and located at the end of the mounting channel of the housing body away from the connecting closure member, the sealing member being used to prevent the silencing unit from moving within the mounting channel.

10. The filter silencer according to claim 9, characterized in that, The connecting hole is located on the axis of the mounting channel, the connecting part is formed on the axis of the mounting channel, and the suction channel is located on the axis of the mounting channel.

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