Air filtering equipment, air suspension system and vehicle

Abstract

The utility model discloses air filtering equipment, an air suspension system and a vehicle, the air filtering equipment comprises a shell, the shell is provided with a filter cavity, the shell is provided with a pressure relief opening, and the pressure relief opening is communicated with the filter cavity; the electric control valve comprises an air inlet section, the air inlet section is movably arranged at the end, away from the filter cavity, of the pressure relief opening between a first position and a second position in the first direction, the electric control valve can be switched between an open state and a closed state, and when the electric control valve is in the closed state and the air inlet section is located at the first position, the air inlet section is located at the second position; when the gas inlet section is located at the first position, the electric control valve stops gas in the filter cavity from flowing out of the pressure relief opening, and when the gas inlet section is located at the second position, the electric control valve allows the gas in the filter cavity to flow out of the pressure relief opening; the elastic piece is arranged on the shell, and the elastic piece can apply elastic force towards the pressure relief opening to the air inlet section, so that the air inlet section has the trend of moving towards the first position all the time.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to an air filtering device, an air suspension system and a vehicle. Background Art

[0002] Air filtration plays a crucial role in a vehicle's air suspension system, filtering and drying the air entering the system to ensure proper operation and extend its service life. Existing air filtration systems rely on solenoid valves to control a pressure relief valve to deflate and release air. However, these air filtration systems are complex, lack compactness, and have low reliability. Utility Model Content

[0003] The first purpose of the present invention is to provide a new technical solution for air filtering equipment, which can at least solve the technical problem of the complex structure of existing air filtering equipment.

[0004] The second object of the present invention is to provide a new technical solution for an air suspension system.

[0005] The third object of the present invention is to provide a new technical solution for a vehicle.

[0006] According to a first aspect of the utility model, an air filtering device is provided, comprising: a shell, the shell being provided with a filter chamber, the shell being provided with a pressure relief port, the pressure relief port being connected to the filter chamber; an electrically controlled valve, the electrically controlled valve comprising an air inlet section, the air inlet section being movably arranged at an end of the pressure relief port away from the filter chamber between a first position and a second position along a first direction, the electrically controlled valve being switchable between an open state and a closed state, wherein, when the electrically controlled valve is in the closed state and the air inlet section is in the first position, the electrically controlled valve stops the gas in the filter chamber from flowing out through the pressure relief port, and when the air inlet section is in the second position, the electrically controlled valve allows the gas in the filter chamber to flow out from the pressure relief port; an elastic member, the elastic member being provided on the shell, the elastic member being capable of applying an elastic force toward the pressure relief port to the air inlet section, so that the air inlet section always has a tendency to move toward the first position.

[0007] Optionally, the entire electrically controlled valve is movable along the first direction between the first position and the second position.

[0008] Optionally, the pressure relief port is provided with a first mounting channel extending along the first direction at one end away from the filter chamber, and a pressure relief hole is provided on the side wall of the first mounting channel. The air intake section is movably provided in the first mounting channel between the first position and the second position along the first direction. When the electric control valve is in the closed state and the air intake section is in the first position, the pressure relief port is disconnected from the pressure relief hole. When the air intake section is in the second position, the pressure relief port is connected to the pressure relief hole.

[0009] Optionally, when the air intake section is located at the first position, one end of the air intake section close to the pressure relief port abuts against the outer shell located at the periphery of the pressure relief port; when the air intake section is located at the second position, one end of the air intake section close to the pressure relief port is spaced apart from the outer shell located at the periphery of the pressure relief port in the first direction.

[0010] Optionally, the electrically controlled valve further comprises: a sealing member, wherein the sealing member is sleeved on the air intake section, and the sealing member is suitable for filling a gap between a circumferential wall surface of the air intake section and a wall surface of the first mounting channel.

[0011] Optionally, a flange portion is provided on the outer periphery of the electric control valve, the elastic member is located at an end of the flange portion away from the filter chamber, the elastic member is sleeved on the electric control valve, the first end of the elastic member abuts against the flange portion, and the second end of the elastic member abuts against the outer shell.

[0012] Optionally, the shell includes: a main shell, the main shell is provided with the filter chamber, the first end of the main shell includes a first area and a second area, the first area is provided with an air outlet, the second area is provided with the pressure relief port, the second end of the main shell is provided with an air inlet, the air outlet and the air inlet are respectively connected to the filter chamber; a sub-shell, the sub-shell is provided in the second area, the second area and the inner wall surface of the sub-shell define an installation cavity, the electric control valve and the elastic member are both provided in the installation cavity, the sub-shell is provided with an exhaust port, and the exhaust port is connected to the installation cavity.

[0013] Optionally, the air filtering device further includes: an air outlet pipe, the air outlet pipe extending along the first direction, the air outlet pipe being arranged in the first area, the first end of the air outlet pipe being connected to the air outlet, and the second end of the air outlet pipe being provided with an air pipe joint.

[0014] Optionally, an inner wall surface of the installation cavity away from the pressure relief port is provided with a guide portion extending along the first direction, and the guide portion is suitable for cooperating with the electric control valve to guide the electric control valve in the first direction.

[0015] Optionally, the air filtering device also includes: a filter element, which is arranged in the filter cavity, the filter element is suitable for filtering and drying gas, the outer peripheral surface of the filter element is in contact with the inner wall surface of the filter cavity, and the filter element is provided with a second installation channel; a pressure relief pipe, the pressure relief pipe is arranged in the second installation channel, the first end of the pressure relief pipe is arranged at one end of the pressure relief port close to the filter cavity, and the second end of the pressure relief pipe is connected to the filter cavity.

[0016] According to a second aspect of the present invention, an air suspension system is provided, comprising the above-mentioned air filtering device.

[0017] According to a third aspect of the present invention, a vehicle is provided, comprising the above-mentioned air suspension system.

[0018] According to the air filtering device of the present invention, the air intake section of the electric control valve is movably arranged at one end of the pressure relief port between a first position and a second position, and an elastic member capable of applying elastic force to the air intake section is provided on the outer shell, so that the air filtering device can not only realize a controlled deflation process through the electric control valve, but also realize an automatic deflation process when the electric control valve is in a closed state under the action of the elastic member. The structure is simple and is conducive to production and manufacturing. Compared with the prior art, the air filtering device of the present invention is not only compact in structure and highly integrated, but also has low production cost and high reliability.

[0019] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0021] Figure 1 This is a perspective view of an air filtration device according to an embodiment of the present invention;

[0022] Figure 2 This is an exploded view of the structure of an air filtration device according to an embodiment of the present invention;

[0023] Figure 3 This is an exploded view of the structure of an air filtration device according to another embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the principle of an air filter device according to an embodiment of the present invention when air is being taken into an air suspension system;

[0025] Figure 5This is a schematic diagram of the air filtering device according to one embodiment of the present invention during automatic deflation;

[0026] Figure 6 This is a schematic diagram of the air filtration device according to one embodiment of the present invention during controlled deflation;

[0027] Figure 7 This is a schematic diagram of the air filter device according to another embodiment of the present invention when the air is being taken into the air suspension system;

[0028] Figure 8 This is a schematic diagram of the air filter device according to another embodiment of the present invention during automatic deflation;

[0029] Figure 9 This is a schematic diagram of the principle of an air filtering device according to another embodiment of the present invention during controlled deflation.

[0030] Reference numerals:

[0031] Air filtering device 100;

[0032] Housing 10; pressure relief port 10a;

[0033] Main housing 11; filter chamber 11a; air outlet 11b;

[0034] First end cover 111; air inlet 111a; first sealing ring 112;

[0035] Auxiliary housing 12; mounting cavity 12a; exhaust port 12b;

[0036] First installation channel 121; pressure relief hole 121a; second end cover 122; guide portion 122a; second sealing ring 123;

[0037] Electric control valve 20; air intake section 21; sealing member 22; flange portion 23;

[0038] Elastic member 30; air outlet pipe 40; air pipe connector 41;

[0039] Filter element 50; filter housing 51; filter screen 52;

[0040] Pressure relief pipe 60; air return pipe 70; compression spring 80. DETAILED DESCRIPTION

[0041] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0042] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0043] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0044] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0045] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0046] The air filtering device 100 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0047] like Figures 1 to 9 As shown, the air filtering device 100 according to an embodiment of the present invention includes: a housing 10 , an electric control valve 20 and an elastic member 30 .

[0048] Specifically, the housing 10 is provided with a filter chamber 11a, and the housing 10 is provided with a pressure relief port 10a, which is connected to the filter chamber 11a. The electric control valve 20 includes an air inlet section 21, and the air inlet section 21 is movably provided at an end of the pressure relief port 10a away from the filter chamber 11a between a first position and a second position along a first direction. The electric control valve 20 can be switched between an open state and a closed state, wherein, when the electric control valve 20 is in a closed state and the air inlet section 21 is in the first position, the electric control valve 20 stops the gas in the filter chamber 11a from flowing out through the pressure relief port 10a, and when the air inlet section 21 is in the second position, the electric control valve 20 allows the gas in the filter chamber 11a to flow out from the pressure relief port 10a, and an elastic member 30 is provided on the housing 10, and the elastic member 30 is used to apply an elastic force toward the pressure relief port 10a to the air inlet section 21, so that the air inlet section 21 always has a tendency to move toward the first position.

[0049] In other words, if Figures 1 to 9As shown, the air filtering device 100 according to an embodiment of the present invention mainly includes a shell 10, an electric control valve 20 and an elastic member 30, wherein the shell 10 is provided with a filter chamber 11a extending along its length direction, and the shell 10 is provided with a pressure relief port 10a at one end of the filter chamber 11a, and the first end of the pressure relief port 10a is connected to the filter chamber 11a, and the electric control valve 20 has an air inlet section 21, and the air inlet section 21 of the electric control valve 20 is movably provided at the second end of the pressure relief port 10a between a first position and a second position along a first direction (for example, the length direction of the shell 10), the first position is relatively close to the pressure relief port 10a, and the second position is relatively far from the pressure relief port 10a.

[0050] The electric-controlled valve 20 can be switched between an open state and a closed state in a controllable manner. When the electric-controlled valve 20 is in a closed state and the air intake section 21 is in a first position, the electric-controlled valve 20 can stop the gas in the filter chamber 11a from flowing out through the pressure relief port 10a; when the electric-controlled valve 20 is in an open state and the air intake section 21 is in a first position, the gas in the filter chamber 11a can enter the air intake section 21 and flow out through the electric-controlled valve 20; when the electric-controlled valve 20 is in a closed state and the air intake section 21 is in a second position, the electric-controlled valve 20 allows the gas in the filter chamber 11a to flow directly out from the pressure relief port 10a.

[0051] The elastic member 30 is provided on the outer shell 10. The elastic member 30 can apply an elastic force toward the pressure relief port 10a to the air intake section 21, so that the air intake section 21 always has a tendency to move toward the first position. Therefore, when the electric control valve 20 is in a closed state, the electric control valve 20 and the elastic member 30 constitute a pressure relief valve structure. The air intake section 21 can move between the first position and the second position according to the air pressure in the filter chamber 11a, thereby realizing an automatic air release process.

[0052] It should be noted that other components of the air filtering device 100 according to the embodiment of the present invention, such as the undescribed parts of the housing 10 and the electric control valve 20, are known to ordinary technicians in this field and will not be described in detail in this embodiment.

[0053] Therefore, according to the air filtering device 100 of the embodiment of the present invention, the air intake section 21 of the electric control valve 20 is movably arranged at one end of the pressure relief port 10a between the first position and the second position, and an elastic member 30 capable of applying elastic force to the air intake section 21 is provided on the outer shell 10, so that the air filtering device 100 can not only realize a controlled deflation process through the electric control valve 20, but also, under the action of the elastic member 30, the electric control valve 20 can realize an automatic deflation process when it is closed. The structure is simple and is conducive to production and manufacturing. Compared with the prior art, the air filtering device 100 of the present invention is not only compact in structure and highly integrated, but also has low production cost and high reliability.

[0054] In some optional examples of the present invention, the electrically controlled valve 20 is a solenoid valve, and the solenoid valve can be a two-way solenoid valve.

[0055] According to one embodiment of the present invention, the entire electrically controlled valve 20 is movable along a first direction between a first position and a second position.

[0056] That is to say, if Figures 4 to 9 As shown, the air intake section 21 of the electric control valve 20 can be relatively fixed with respect to other parts of the electric control valve 20. In this case, the entire electric control valve 20 is movably provided on the housing 10 along a first direction between a first position and a second position, thereby realizing the movement of the air intake section 21 between the first position and the second position.

[0057] In this embodiment, the air inlet section 21 of the electric control valve 20 is relatively fixed relative to other parts of the electric control valve 20 , has a simple structure, can be directly purchased from the market, and can effectively reduce the production cost of the air filtering device 100 .

[0058] In some specific embodiments of the present invention, a first mounting channel 121 extending along a first direction is provided at one end of the pressure relief port 10a away from the filter chamber 11a, and a pressure relief hole 121a is provided on the side wall of the first mounting channel 121. The air intake section 21 is movably provided in the first mounting channel 121 between a first position and a second position along the first direction. When the electric control valve 20 is in a closed state and the air intake section 21 is in the first position, the pressure relief port 10a is disconnected from the pressure relief hole 121a. When the air intake section 21 is in the second position, the pressure relief port 10a is connected to the pressure relief hole 121a.

[0059] like Figures 4 to 9 As shown, in order to improve the stability of the air intake section 21 during movement, the housing 10 is provided with a first mounting channel 121 extending along the first direction at one end of the pressure relief port 10a away from the filter chamber 11a, and the side wall of the first mounting channel 121 is provided with a pressure relief hole 121a, which is communicated with the external space of the filter chamber 11a, and the pressure relief hole 121a is spaced apart from the pressure relief port 10a along the first direction. The first mounting channel 121 is adapted to the air intake section 21, and the air intake section 21 is movably provided in the first mounting channel 121 between the first position and the second position, so that the first mounting channel 121 can guide the air intake section 21, thereby effectively improving the stability of the air intake section 21 during movement and facilitating production and assembly.

[0060] In this embodiment, when the electric control valve 20 is in a closed state and the air intake section 21 is in the first position, the electric control valve 20 blocks the air flow channel between the pressure relief port 10a and the pressure relief hole 121a. At this time, the pressure relief port 10a and the pressure relief hole 121a are disconnected, and the gas in the filter chamber 11a will not flow out through the pressure relief port 10a. When the air intake section 21 is in the fourth position, the air intake section 21 avoids the air flow channel between the pressure relief port 10a and the pressure relief hole 121a, and the gas in the filter chamber 11a can pass through the pressure relief port 10a and flow out from the pressure relief hole 121a.

[0061] According to one embodiment of the present invention, when the air intake section 21 is located in the first position, one end of the air intake section 21 close to the pressure relief port 10a abuts against the outer shell 10 located on the periphery of the pressure relief port 10a; when the air intake section 21 is located in the second position, one end of the air intake section 21 close to the pressure relief port 10a is spaced apart from the outer shell 10 located on the periphery of the pressure relief port 10a in the first direction.

[0062] That is to say, if Figure 4 and Figure 7 As shown, when the air inlet section 21 is in the first position, one end of the air inlet section 21 close to the pressure relief port 10a can abut against the housing 10 located at the periphery of the pressure relief port 10a under the action of the elastic member 30, thereby effectively avoiding the problem of air leakage at the pressure relief port 10a when the electric control valve 20 is in the closed state and the air inlet section 21 is in the first position, thereby ensuring the reliability of the air filtering device 100; Figure 5 and Figure 8 As shown, when the air inlet section 21 is in the second position, one end of the air inlet section 21 close to the pressure relief port 10a is spaced apart from the housing 10 located at the periphery of the pressure relief port 10a in the first direction, thereby ensuring that the gas in the filter cavity 11a can pass through the pressure relief port 10a.

[0063] In some specific embodiments of the present invention, the electric control valve 20 further includes: a seal 22, which is sleeved on the air intake section 21, and the seal 22 is suitable for filling the gap between the circumferential wall of the air intake section 21 and the wall of the first mounting channel 121.

[0064] Specifically, if Figure 4 As shown, the side wall of the air intake section 21 is provided with an annular mounting groove extending along its circumference, and the air intake section 21 is provided with a sealing member 22, such as a rubber ring, at the position of the annular mounting groove. The sealing member 22 can fill the gap between the circumferential wall surface of the air intake section 21 and the first mounting channel 121, thereby effectively avoiding the problem of air leakage in the pressure relief hole 121a when the air intake section 21 is in the first position, thereby ensuring the reliability of the air filtering device 100.

[0065] According to one embodiment of the present invention, a flange portion 23 is provided on the outer periphery of the electric control valve 20, and the elastic member 30 is located at one end of the flange portion 23 away from the filter chamber 11a. The elastic member 30 is sleeved on the electric control valve 20, and the first end of the elastic member 30 abuts against the flange portion 23, and the second end of the elastic member 30 abuts against the outer shell 10.

[0066] like Figure 2 and Figure 3 As shown, the outer periphery of the electric control valve 20 is provided with a flange portion 23 extending along its circumferential direction, and the elastic member 30 is formed as a spring. The elastic member 30 is located at one end of the flange portion 23 away from the filter chamber 11a. When the air intake section 21 is located at the first position and the second position, the elastic member 30 is in a compressed state, so that the first end of the elastic member 30 can abut against the side of the flange portion 23 away from the filter chamber 11a, and the second end of the elastic member 30 can abut against the housing 10.

[0067] Further, if Figures 4 to 9 As shown, the elastic member 30 is sleeved on the electric control valve 20 , which can effectively improve the structural compactness and integration of the air filtering device 100 and is convenient for production and assembly.

[0068] In some specific embodiments of the present invention, the shell 10 includes: a main shell 11 and a sub-shell 12, the main shell 11 is provided with a filter chamber 11a, the first end of the main shell 11 includes a first area and a second area, the first area is provided with an air outlet 11b, and the second area is provided with a pressure relief port 10a, the second end of the main shell 11 is provided with an air inlet 111a, the air outlet 11b and the air inlet 111a are respectively connected to the filter chamber 11a, the sub-shell 12 is provided in the second area, and the second area and the inner wall surface of the sub-shell 12 define an installation cavity 12a, the electric control valve 20 and the elastic member 30 are both provided in the installation cavity 12a, and the sub-shell 12 is provided with an exhaust port 12b, and the exhaust port 12b is connected to the installation cavity 12a.

[0069] In other words, if Figures 1 to 6 As shown, the shell 10 according to the embodiment of the present invention mainly includes a main shell 11 and a sub-shell 12, wherein the main shell 11 is provided with a filter chamber 11a extending along the first direction, and the main shell 11 has a first end and a second end relatively arranged in the first direction, and the first end of the main shell 11 is divided into a first area and a second area, the first area is provided with an air outlet 11b connected to the filter chamber 11a, and the pressure relief port 10a is provided in the second area; the second end of the main shell 11 is provided with an air inlet 111a connected to the filter chamber 11a, and when in use, external gas can enter the filter chamber 11a from the air inlet 111a.

[0070] The secondary housing 12 is disposed in the second region of the first end of the main housing 11. The secondary housing 12 can be integrally formed with the main housing 11 or fixedly connected thereto by welding or other methods. The inner wall surface of the secondary housing 12 and the surface of the second region define a mounting cavity 12a. The electrically controlled valve 20 and the elastic member 30 are both mounted in the mounting cavity 12a. The secondary housing 12 is also provided with an exhaust port 12b communicating with the mounting cavity 12a. When the air inlet section 21 is in the second position or the electrically controlled valve 20 is open, gas within the filter chamber 11a can flow out of the exhaust port 12b.

[0071] In this embodiment, the air outlet 11b, the auxiliary shell 12, the electric control valve 20 and the elastic member 30 are all located at the first end of the main shell 11. The structure is compact, and the space corresponding to the first area can provide installation space for other structures, which is convenient for subsequent installation.

[0072] like Figure 1 As shown, according to one embodiment of the present invention, the air filtering device 100 also includes: an air outlet pipe 40, the air outlet pipe 40 extends along a first direction, the air outlet pipe 40 is arranged in a first area, the air outlet pipe 40 can be fixedly connected to the main shell 11, for example, welded together, the first end of the air outlet pipe 40 is connected to the air outlet 11b, and the second end of the air outlet pipe 40 is provided with an air pipe connector 41, which is used to connect to the pipeline of the air suspension system. The air pipe connector 41 can be a quick-release connector, for example, the air pipe connector 41 is configured to be connected to the pipeline of the air suspension system by a snap-on manner, and the air pipe connector 41 can also be an ordinary connector, for example, the air pipe connector 41 is configured to be connected to the pipeline of the air suspension system by a screw-on manner. Its specific structure can be determined according to actual needs and will not be repeated in this embodiment.

[0073] In this embodiment, the air outlet pipe 40 is located in the space corresponding to the first area, which can effectively improve the compactness of the air filtering device 100, and the provision of the air pipe joint 41 facilitates the connection between the air filtering device 100 and the pipeline of the air suspension system.

[0074] In some specific embodiments of the present invention, a guide portion 122a extending along the first direction is provided on the inner wall surface of the installation cavity 12a away from the pressure relief port 10a. The guide portion 122a is suitable for cooperating with the electric control valve 20 to guide the electric control valve 20 in the first direction.

[0075] like Figure 2As shown, in order to improve the stability of the electric control valve 20 during its movement, a guide portion 122a is provided on the inner wall surface of the installation cavity 12a away from the pressure relief port 10a. The guide portion 122a can be formed as a protrusion structure extending along the first direction. Specifically, the guide portion 122a is formed as a protrusion that fits into the side wall of the end of the electric control valve 20 away from the pressure relief port 10a, thereby guiding the electric control valve 20 and effectively improving the stability of the electric control valve 20 during its movement, thereby ensuring the reliability of the air filtration device 100.

[0076] It should be noted that the structure of the guide portion 122 a can be adjusted according to actual needs. For example, the guide portion 122 a can also be formed as a guide rod structure, and the guide portion 122 a is plugged into the end of the electric control valve 20 .

[0077] like Figure 2 and Figure 4 As shown, according to one embodiment of the present invention, a filter element 50 is provided in the filter cavity 11a, and a filter housing 51 is provided on the outside of the filter element 50. The filter housing 51 is spaced apart from the inner wall of the filter cavity 11a. The filter housing 51 has a first opening end and a second opening end opposite to each other in a first direction. The first opening end of the filter housing 51 is provided at the air outlet 11b, and the second opening end of the filter housing 51 faces the air inlet 111a. When the air suspension system is inflated, the gas enters the filter element 50 through the second opening end of the filter housing 51, and enters the air suspension system through the filter element 50 and the air inlet 111a. Figure 6 As shown, when the air suspension system is deflated, the gas in the air suspension system enters the first open end of the filter housing 51 through the air outlet 11b, enters the filter element 50, and flows to the second open end of the filter housing 51. After passing through the second open end of the filter housing 51, the gas flows through the gap between the filter housing 5 and the inner wall surface of the filter cavity 11a to the pressure relief port 10a, and is discharged from the pressure relief port 10a.

[0078] In this embodiment, the gas entering the air suspension system can be filtered and dried through the filter element 50, and the gas discharged by the air suspension system can carry out the moisture in the filter element 50, which is beneficial to improving the life of the filter element 50.

[0079] In some specific embodiments of the present invention, the air filtering device 100 also includes: a filter element 50 and a pressure relief pipe 60. The filter element 50 is arranged in the filter chamber 11a. The filter element 50 is suitable for filtering and drying the gas. The outer peripheral surface of the filter element 50 is in contact with the inner wall surface of the filter chamber 11a. The filter element 50 is provided with a second installation channel. The pressure relief pipe 60 is provided in the second installation channel. The first end of the pressure relief pipe 60 is provided at one end of the pressure relief port 10a close to the filter chamber 11a, and the second end of the pressure relief pipe 60 is connected to the filter chamber 11a.

[0080] Specifically, if Figure 3 and Figure 7As shown, a filter element 50 is disposed within the filter chamber 11a. The filter element 50 has a plurality of adsorption holes, through which the gas passing therethrough can be filtered and dried. The outer peripheral surface of the filter element 50 is in contact with the inner wall surface of the filter chamber 11a, thereby fully utilizing the space of the filter chamber 11a. A desiccant can also be disposed within the filter element 50 to enhance the drying effect of the filter element 50. The filter element 50 is also provided with a second mounting channel extending along a first direction. A pressure relief pipe 60 is inserted into the second mounting channel. The first end of the pressure relief pipe 60 is disposed at an end of the pressure relief port 10a proximal to the filter chamber 11a, so that the pressure relief pipe 60 communicates with the pressure relief port 10a. The second end of the pressure relief pipe 60 communicates with the filter chamber 11a.

[0081] Therefore, according to the air filtering device 100 of the embodiment of the present invention, when the air suspension system is deflated, the gas in the air suspension system first passes through the filter element 50, and then is discharged from the pressure relief port 10a through the pressure relief pipe 60. The moisture in the filter element 50 can be brought out by the gas, which can effectively extend the service life of the filter element 50. Compared with the above embodiment, the filter element 50 of this embodiment does not need to be provided with a filter housing 51 structure, has a simple structure, and has a low production cost.

[0082] Specifically, the pressure relief pipe 60 is fixedly connected to the main housing 11 , for example, the pressure relief pipe 60 is welded to the main housing 11 .

[0083] like Figures 1 to 3 As shown, according to one embodiment of the present invention, the second end of the main shell 11 is provided with a first end cover 111, and the air inlet 111a is provided on the first end cover 111. The first end cover 111 can be installed and fixed by means of bolts, snap fastening, ultrasonic welding, etc. When the first end cover 111 is not installed, there is an opening at one end of the filter chamber 11a, and the filter element 50 can be installed in the filter chamber 11a from the opening; the end of the sub-shell 12 away from the main shell 11 is provided with a second end cover 122, and the second end cover 122 can be installed and fixed by means of bolts, snap fastening, ultrasonic welding, etc., and the guide portion 122a is provided on the inner side of the second end cover 122. When the second end cover 122 is not installed, there is an opening at one end of the installation cavity 12a, and the elastic member 30 and the electric control valve 20 can be installed in the installation cavity 12a from the opening.

[0084] Alternatively, as Figure 1 As shown, the second end cover 122 is provided with a mounting hole penetrating along the thickness direction thereof, so that the circuit of the electric control valve 20 can pass through the mounting hole.

[0085] like Figure 2 and Figure 3As shown, in some optional examples of the present invention, a first sealing ring 112 is provided between the first end cover 111 and the open end of the main shell 11, and the first sealing ring 112 can fill the gap between the first end cover 111 and the open end of the main shell 11, thereby ensuring the air tightness of the filter chamber 11a; a second sealing ring 123 is provided between the second end cover 122 and the open end of the auxiliary shell 12, and the second sealing ring 123 can fill the gap between the second end cover 122 and the open end of the auxiliary shell 12, thereby ensuring the air tightness of the installation cavity 12a.

[0086] In some specific embodiments of the present invention, filter screens 52 are provided at both ends of the filter element 50 in the first direction. When the filter element 50 has a filter housing 51 , the filter screens 52 are installed in the filter housing 51 .

[0087] like Figure 2 and Figure 3 As shown, according to one embodiment of the present invention, a compression spring 80 is provided between the filter element 50 and the first end cover 111, the first end of the compression spring 80 abuts against the filter element 50, and the second end of the compression spring 80 abuts against the first end cover 111. The compression spring 80 can apply a force toward the air outlet 11b to the filter element 50 to fix the filter element 50 and enable the first open end of the filter housing 51 to stop against the inner wall surface of the filter chamber 11a, and the structure is simple, which is convenient for production and assembly.

[0088] When the air filtering device 100 according to the embodiment of the present invention is in use, the air outlet pipe 40 is connected to the pipeline of the air suspension system through the air pipe joint 41, the air inlet 111a is connected to the air outlet end of the air pump, and the second end of the return air pipe 70 is connected to the air inlet cavity of the air pump.

[0089] like Figure 7 As shown, when the air suspension system is inflated, the electronically controlled valve 20 is in a closed state and the air intake section 21 is in the first position. The air pump delivers gas from the air inlet 111a to the filter chamber 11a. The air pressure in the filter chamber 11a gradually increases. The gas entering the filter chamber 11a passes through the filter element 50 and flows into the pipeline of the air suspension system through the outlet pipe 40. When the gas passes through the filter element 50, the filter element 50 can filter and dry the passing gas.

[0090] like Figure 8As shown, when the air pressure in the filter chamber 11a exceeds the set safety pressure range, the force exerted by the gas in the filter chamber 11a on the air inlet section 21 is greater than the elastic force of the elastic member 30, the elastic member 30 is compressed, and the air inlet section 21 moves from the first position to the second position under the action of the gas. The gas in the filter chamber 11a can pass through the pressure relief port 10a and flow into the installation chamber 12a from the pressure relief hole 121a, and be discharged into the air inlet chamber of the air pump through the installation chamber 12a and the return air pipe 70, and finally be discharged through the air outlet end of the air pump until the air pressure in the filter chamber 11a returns to the set safety pressure range. When the air pressure in the filter chamber 11a returns to the set safety pressure range, the air inlet section 21 moves from the second position to the first position under the elastic force of the elastic member 30.

[0091] It should be noted that the set safety pressure range is related to the elastic force of the elastic member 30 , and the elastic force of the elastic member 30 is determined specifically according to the required safety pressure range.

[0092] like Figure 9 As shown, when the air suspension system is deflated, the electronically controlled valve 20 is switched to the open state, and the gas in the air suspension system flows to the outlet pipe 40, then passes through the filter element 50, and after passing through the filter element 50, is discharged into the air inlet chamber of the air pump through the pressure relief pipe 60, the pressure relief port 10a, the electronically controlled valve 20 and the return air pipe 70, and finally is discharged through the air outlet end of the air pump.

[0093] In summary, according to the air filtering device 100 of the embodiment of the present invention, the air intake section 21 of the electric control valve 20 is movably arranged at one end of the pressure relief port 10a between the first position and the second position, and an elastic member 30 capable of applying elastic force to the air intake section 21 is provided on the outer shell 10, so that the air filtering device 100 can not only realize a controlled deflation process through the electric control valve 20, but also realize an automatic deflation process when the electric control valve 20 is closed under the action of the elastic member 30. The structure is simple and is conducive to production and manufacturing. Compared with the prior art, the air filtering device 100 of the present invention is not only compact in structure and highly integrated, but also has low production cost and high reliability.

[0094] The present invention also provides an air suspension system including the air filter device 100 described in any of the above embodiments. Since the air filter device 100 according to the present invention has the above technical effects, the air suspension system according to the present invention also has corresponding technical effects, which will not be described in detail in this embodiment.

[0095] The embodiment of the present invention further provides a vehicle including the air suspension system described in the above embodiment. Since the air filter device 100 according to the embodiment of the present invention has the above technical effects, the vehicle according to the embodiment of the present invention also has corresponding technical effects, which will not be described in detail in this embodiment.

[0096] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will appreciate that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will appreciate that modifications may be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An air filtering device, characterized in that: include: A housing, wherein the housing is provided with a filter cavity, the housing is provided with a pressure relief port, and the pressure relief port is communicated with the filter cavity; An electrically controlled valve, comprising an air inlet section, the air inlet section being movably disposed at an end of the pressure relief port away from the filter chamber between a first position and a second position along a first direction, the electrically controlled valve being switchable between an open state and a closed state, wherein: When the electric control valve is in the closed state and the air inlet section is in the first position, the electric control valve stops the gas in the filter chamber from flowing out through the pressure relief port; when the air inlet section is in the second position, the electric control valve allows the gas in the filter chamber to flow out through the pressure relief port; An elastic member is provided on the housing, and the elastic member can apply an elastic force toward the pressure relief port to the air intake section, so that the air intake section always has a tendency to move toward the first position.

2. The air filtering device according to claim 1, characterized in that The entire electrically controlled valve is movable along the first direction between the first position and the second position.

3. The air filtering device according to claim 1, characterized in that The pressure relief port is provided with a first installation channel extending along the first direction at one end away from the filter chamber, a pressure relief hole is provided on a side wall of the first installation channel, and the air inlet section is movably provided in the first installation channel between the first position and the second position along the first direction. When the electrically controlled valve is in the closed state and the air intake section is in the first position, the pressure relief port is disconnected from the pressure relief hole. When the air intake section is in the second position, the pressure relief port is connected to the pressure relief hole.

4. The air filtering device according to claim 1, characterized in that When the air inlet section is located at the first position, one end of the air inlet section close to the pressure relief port abuts against the housing located at the periphery of the pressure relief port. When the air inlet section is located at the second position, one end of the air inlet section close to the pressure relief port is spaced apart from the housing located at the periphery of the pressure relief port in the first direction.

5. The air filtering device according to claim 3, characterized in that: The electrically controlled valve further comprises: A sealing member is sleeved on the air intake section, and the sealing member is suitable for filling the gap between the circumferential wall surface of the air intake section and the wall surface of the first installation channel.

6. The air filtering device according to claim 1, characterized in that A flange portion is provided on the outer periphery of the electric control valve, and the elastic member is located at an end of the flange portion away from the filter chamber. The elastic member is sleeved on the electric control valve, and the first end of the elastic member abuts the flange portion, and the second end of the elastic member abuts the outer shell.

7. The air filtering device according to claim 1, characterized in that The housing comprises: A main housing, wherein the main housing is provided with the filter cavity, the first end of the main housing includes a first area and a second area, the first area is provided with an air outlet, the second area is provided with the pressure relief port, and the second end of the main housing is provided with an air inlet, the air outlet and the air inlet are respectively communicated with the filter cavity; A secondary shell is provided in the second area, the second area and the inner wall surface of the secondary shell define an installation cavity, the electric control valve and the elastic member are both provided in the installation cavity, and the secondary shell is provided with an exhaust port, which is communicated with the installation cavity.

8. The air filtering device according to claim 7, characterized in that: Also includes: An air outlet pipe extends along the first direction, the air outlet pipe is arranged in the first area, a first end of the air outlet pipe is connected to the air outlet, and a second end of the air outlet pipe is provided with an air pipe joint.

9. The air filtering device according to claim 8, characterized in that: A guide portion extending along the first direction is provided on an inner wall surface of the installation cavity away from the pressure relief port. The guide portion is suitable for cooperating with the electric control valve to guide the electric control valve in the first direction.

10. The air filtering device according to any one of claims 1 to 9, characterized in that Also includes: A filter element, the filter element being disposed in the filter cavity, the filter element being suitable for filtering and drying gas, the outer peripheral surface of the filter element being in contact with the inner wall surface of the filter cavity, and the filter element being provided with a second mounting channel; A pressure relief pipe is provided in the second installation channel, a first end of the pressure relief pipe is provided at one end of the pressure relief port close to the filter cavity, and a second end of the pressure relief pipe is communicated with the filter cavity.

11. An air suspension system, characterized in that: An air filtering device comprising the air filtering device according to any one of claims 1 to 10.

12. A vehicle, characterized in that: The air suspension system according to claim 10 is included.

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