Air filtering device, air conditioning system and vehicle

Abstract

The invention provides an air filtering device, an air conditioning system and a vehicle, the air filtering device comprises: a shell, which is internally provided with an accommodating cavity, and one side of the shell is open; the bracket is erected in the containing cavity, and a circulation hole is formed in the bracket in a penetrating mode; the fixing plate is erected on the bracket, faces the opening and is fixedly connected with the inner wall of the shell; the filter element is erected on the bracket and located on the side, opposite to the opening, of the fixing plate, and an air outlet communicated with the containing cavity is formed in the position, above the filter element, of the shell; the baffle plate is rotatably connected with the shell above the fixed plate and is arranged towards the opening; the driving assembly is in driving connection with the baffle and drives the baffle to rotate, and the baffle blocks or releases the space between the fixing plate and the inner wall of the shell above; the air outlet pipe is communicated with the air outlet. According to the invention, the space above the fixed plate is blocked or released by driving the baffle plate, and the circulation path of airflow is adjusted, so that the filter element is not always in a working state, and the service life of the filter element is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and in particular to an air filtering device, an air conditioning system and a vehicle. Background Art

[0002] As environmental pollution becomes increasingly serious, people are paying more and more attention to the air quality in cars. In the prior art, cars are equipped with air filtration devices, and the outside air must flow through the air filtration device for filtration before being delivered to the air inlet of the air conditioner, and then to the air conditioning system before being finally delivered to the cockpit. However, regardless of the air quality outside, all the air entering the cockpit must flow through the air filtration device, and the filter element in the air filtration device is always in working condition, which is not conducive to extending the service life of the filter element. Summary of the invention

[0003] In view of this, the present invention provides an air filtering device, an air conditioning system and a vehicle. When the quality of the outside air is poor, the air flow is completely filtered through the filter element. When the quality of the outside air is very good, most of the air flow does not pass through the filter element and is directly discharged from the outlet pipe.

[0004] The air filter device provided by the present invention comprises:

[0005] A housing, wherein a receiving cavity is provided in the housing, and one side of the housing is open;

[0006] A bracket, the bracket is mounted in the accommodating cavity, and a flow hole is opened through the bracket;

[0007] A fixing plate, which is mounted on the bracket, disposed toward the opening, and fixedly connected to the inner wall of the shell;

[0008] A filter element, the filter element is mounted on the bracket and is located on a side of the fixing plate facing away from the opening, and the housing is provided with an air outlet communicating with the accommodating cavity above the filter element;

[0009] a baffle, the baffle being rotatably connected to the housing above the fixing plate and disposed toward the opening;

[0010] A driving assembly, wherein the driving assembly is connected to the baffle plate to drive the baffle plate to rotate, and the baffle plate blocks or releases the space between the fixing plate and the inner wall of the housing above;

[0011] An air outlet pipe is communicated with the air outlet.

[0012] Optionally, the air filtering device further comprises:

[0013] A first air quality sensor, which is fixedly connected to the housing and is used to monitor the external air quality;

[0014] A controller, the input end of the controller is communicatively connected to the output end of the first air quality sensor, and the output end of the controller is communicatively connected to the control end of the driving component.

[0015] Optionally, the air filtering device further includes: a second air quality sensor, which is fixedly connected to the housing and is used to monitor the air quality after being filtered by the filter element. The output end of the second air quality sensor is communicatively connected to the input end of the controller.

[0016] Optionally, the filter element includes a first filter element and a second filter element which are stacked.

[0017] Optionally, the driving component includes:

[0018] A motor, which is fixedly connected to the housing;

[0019] A rotating shaft, the opposite ends of the rotating shaft are rotatably connected to the housing, one end of the rotating shaft is fixedly connected to the output shaft of the motor, and the baffle is fixedly connected to the rotating shaft.

[0020] Optionally, the air filtering device further includes:

[0021] A first fixing member, the opposite ends of the first fixing member are respectively connected to the fixing plate and the housing;

[0022] A second fixing member, the second fixing member sleeves the rotating shaft, is rotatably connected to the rotating shaft, and is detachably connected to the first fixing member.

[0023] Optionally, the air filtering device further includes:

[0024] A first connecting member, the first connecting member is fixedly connected to the fixing plate;

[0025] A second connecting member, the second connecting member is fixedly connected to the bracket and is detachably connected to the first connecting member.

[0026] Optionally, the housing includes an upper housing and a lower housing which are detachably connected, and the upper housing and the lower housing enclose the accommodation cavity.

[0027] The present invention also provides an air conditioning system, including the air filtering device according to any one of the above, and an air outlet pipe of the air filtering device is communicated with an air inlet of the air conditioning system.

[0028] The present invention also provides a vehicle, including the air conditioning system described above.

[0029] The above technical solutions provided by the present invention have at least the following beneficial effects compared with the prior art:

[0030] When using the air filtration device, air conditioning system and vehicle of the present invention, when the outside air quality is poor, the space above the fixing plate is blocked by the baffle, so that all the air flows through the space below the bracket and is filtered by the filter element. When the outside air quality is very good, the baffle is driven to release the space above the fixing plate, so that most of the air flow does not pass through the filter element, but flows through the space above the fixing plate and is directly discharged from the air outlet pipe. The filter element is not always in a working state, which is beneficial to extending the service life of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the air filtration device according to an embodiment of the present invention;

[0032] Figure 2 For Figure 1 Another perspective schematic diagram of the air filtration device shown;

[0033] Figure 3 For Figure 1 Top view of the air filtration device shown;

[0034] Figure 4 For Figure 1 Internal structure schematic diagram of the air filtration device shown;

[0035] Figure 5 For Figure 1 Cross-sectional view of the air filtration device shown;

[0036] Figure 6 For Figure 1 Another perspective cross-sectional view of the air filtration device shown;

[0037] Figure 7 For Figure 1 Schematic diagram of the connection relationship between the upper housing and the air outlet pipe of the air filtration device shown;

[0038] Figure 8 For Figure 1 Schematic diagram of the lower housing of the air filtration device shown.

[0039] Reference numerals:

[0040] 1: Housing; 101: Upper housing; 102: Lower housing; 2: Bracket; 3: Fixed plate; 4: Filter element; 41: First filter element; 42: Second filter element; 5: Baffle; 6: Driving assembly; 61: Motor; 62: Rotating shaft; 7: Exhaust pipe; 8: First air quality sensor; 9: Second air quality sensor; 10: First fixing member; 11: Second fixing member; 12: First connecting member; 13: Second connecting member; 14: Reinforcing plate. Detailed implementation manners

[0041] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings. In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of simplifying the description of the present invention, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0042] Figure 1 Schematic diagram of the air filtration device according to an embodiment of the present invention; Figure 2 is Figure 1 Another perspective schematic diagram of the air filtration device shown; Figure 3 is Figure 1 Top view of the air filtration device shown;

[0043] Figure 4 is Figure 1 Internal structure schematic diagram of the air filtration device shown; Figure 5 is Figure 1 Cross-sectional view of the air filtration device shown.

[0044] As Figures 1-5 shown, the air filtration device includes a housing 1, a bracket 2, a fixed plate 3, a filter element 4, a baffle 5, a driving assembly 6, and an exhaust pipe 7. A receiving cavity is provided inside the housing 1, and one side of the housing 1 is open; the bracket 2 is installed in the receiving cavity, and a through hole is provided through the bracket 2; the fixed plate 3 is placed on the bracket 2, facing the opening, and is fixedly connected to the inner wall of the housing 1; the filter element 4 is placed on the bracket 2 and is located on the side of the fixed plate 3 facing away from the opening. An air outlet communicating with the receiving cavity is provided above the filter element 4 in the housing 1; the baffle 5 is rotatably connected to the housing 1 above the fixed plate 3 and faces the opening; the driving assembly 6 is drivingly connected to the baffle 5 to drive the baffle 5 to rotate, and the baffle 5 blocks or releases the space between the fixed plate 3 and the inner wall of the upper housing 1; the exhaust pipe 7 is communicated with the air outlet.

[0045] During use, connect the air outlet pipe 7 to the air inlet of the vehicle's air conditioning system. When the outside air quality is poor, start the driving component 6 to drive the baffle 5 to rotate in the first direction until the baffle 5 completely blocks the space between the fixing plate 3 and the inner wall of the upper housing 1. Then, the airflow entering through the opening of the housing 1 is intercepted by the baffle 5 and cannot flow through the space between the fixing plate 3 and the inner wall of the upper housing 1. All the airflow enters the space below the bracket 2 and flows through the filter element 4 placed on the bracket 2 through the circulation holes penetrating the bracket 2. During the process of flowing through the filter element 4, the particulate impurities in the airflow are filtered by the filter element 4. The filtered airflow enters the space between the filter element 4 and the upper housing 1 and is discharged through the air outlet pipe 7 into the air inlet of the air conditioning system and finally enters the cockpit. When the outside air quality is very good, start the driving component 6 to drive the baffle 5 to rotate in the second direction opposite to the first direction until the baffle 5 releases the space between the fixing plate 3 and the inner wall of the upper housing 1. Then, for the airflow entering through the opening of the housing 1, since the space between the fixing plate 3 and the upper housing 1 is directly connected to the air outlet pipe 7 and there is no obstacle, the air resistance is extremely small. However, for the airflow entering through the space below the bracket 2, it will flow through the filter element 4 and the air resistance is relatively large. Therefore, the vast majority of the airflow will enter the space between the fixing plate 3 and the inner wall of the upper housing 1 and be discharged to the air inlet of the air conditioning system through the air outlet pipe 7 connected to this space, while only a very small amount of airflow will flow through the space below the bracket 2 and through the filter element 4.

[0046] By adopting the air filtering device of the present invention, when the outside air quality is poor, the upper space of the fixing plate 3 is blocked by the baffle 5, so that all the airflow flows through the space below the bracket 2 and is filtered by the filter element 4. When the outside air quality is very good, the baffle 5 is driven to release the upper space of the fixing plate 3, so that the vast majority of the airflow does not pass through the filter element 4 but flows through the upper space of the fixing plate 3 and is directly discharged through the air outlet pipe 7. The filter element 4 does not always work, which is beneficial to extending the service life of the filter element 4.

[0047] Such as Figures 1-5As shown, the housing 1 is a hollow cuboid as a whole, with one side wall completely open as the air inlet. A boss is provided on the inner wall of the lower side of the housing 1, and the bracket 2 is horizontally placed on the boss. The circumferential direction of the bracket 2 abuts against the horizontal circumferential inner wall of the housing 1, and there is a certain space between the bracket 2 and the upper and lower inner walls of the housing 1. The fixing plate 3 is a cuboid plate as a whole, which is placed on the bracket 2 on the side facing the opening, and extends as long as the housing 1. Both ends are fixedly connected to the inner wall of the housing 1 and extend a certain distance into the housing 1. The filter element 4 is placed on the bracket 2 on the side of the fixing plate 3 facing away from the opening, and the height of the filter element 4 is equal to or less than the height of the fixing plate 3, so that when the air flow enters the housing 1 from above the fixing plate 3, it will not pass through the filter element 4 but is directly discharged through the air outlet pipe 7. The baffle 5 is arranged in the space between the fixing plate 3 and the upper inner wall of the housing 1, with a shape and size matching the cross-section of the space, and rotates under the drive of the drive assembly 6. In this embodiment, when the baffle 5 rotates to Figure 2 and Figure 5 in the vertical state, the space between the fixing plate 3 and the upper inner wall of the housing 1 is completely blocked. At this time, the air flow enters through the space below the bracket 2; when the baffle 5 rotates to Figure 1 in the horizontal state, the space between the fixing plate 3 and the upper inner wall of the housing 1 is released to the greatest extent. At this time, due to the excessive air resistance of the air flow path below the bracket 2 affected by the filter element 4, most of the air flow enters the housing 1 through the space between the fixing plate 3 and the upper inner wall of the housing 1 without passing through the filter element 4 for filtration and is directly discharged through the air outlet pipe 7 connected to the housing 1 above the filter element 4. As Figure 2 shown, in order to improve the strength of the baffle 5, a plurality of reinforcing plates 14 are fixedly arranged on the baffle 5 at equal intervals, and the reinforcing plates 14 are arranged in parallel. According to the actual application situation, the shape and size of the housing 1, the bracket 2, the fixing plate 3, and the baffle 5 can be matched and adjusted, and the drive assembly 6 can be composed of any structure, as long as under the drive of the drive assembly 6, the space between the fixing plate 3 and the upper inner wall of the housing 1 can be blocked or released by means of the baffle 5, so as to control the air flow to enter only from below the bracket 2 and pass through the filter element 4 for filtration, or most of the air flow enters through the space between the fixing plate 3 and the upper inner wall of the housing 1 without filtration and is directly discharged through the air outlet pipe 7. In order to achieve complete blocking, a sealing strip can also be installed on the circumference of the baffle 5 to seal the gap between the baffle 5 and the fixing plate 3 and the inner wall of the housing 1.

[0048] Optionally, the air filtering device further includes a first air quality sensor 8 and a controller. The first air quality sensor 8 is fixedly connected to the housing 1 for monitoring the external air quality; the input end of the controller is communicatively connected to the output end of the first air quality sensor 8, and the output end of the controller is communicatively connected to the control end of the drive assembly 6. With this setting, by means of the monitoring of the external air quality by the first air quality sensor 8, the controller can automatically control whether to perform the air filtering operation.

[0049] The first air quality sensor 8 monitors the particulate matter concentration data in the external air in real time and transmits the particulate matter concentration data to the controller in real time. The controller pre-stores the set concentration data internally and compares the received particulate matter concentration data with the set concentration data. When the particulate matter concentration data is greater than or equal to the set concentration data, it indicates that the air quality is poor. At this time, the controller controls the driving component 6 to start and drives the baffle 5 to rotate to a blocking state that blocks the space between the fixing plate 3 and the inner wall of the upper housing 1, so that all the air flow enters from the space below the bracket 2 and passes through the bracket 2 and flows through the filter element 4 on the bracket 2, and is discharged after being filtered by the filter element 4. When the particulate matter concentration data is less than the set concentration data, it indicates that the air quality is very good. At this time, the controller controls the driving component 6 to start and drives the baffle 5 to rotate to a releasing state that releases the space between the fixing plate 3 and the inner wall of the upper housing 1, so that most of the air flow directly enters the space between the fixing plate 3 and the inner wall of the upper housing 1, without being filtered by the filter element 4, and is directly discharged from the air outlet pipe 7. The control logic of the controller to control the driving component 6 to drive the baffle 5 to be in different working states according to the particulate matter concentration data monitored by the first air quality sensor 8 can be realized according to the existing mature algorithms, and its specific principle will not be elaborated here. According to the actual application situation, the set concentration data can be adjusted appropriately, for example, set to 50 ug / m 3 . In this embodiment, the controller is equipped with a built-in timer. Through preliminary experiments, it can be determined that when the baffle 5 changes from the blocking state to the releasing state, or from the releasing state to the blocking state, the duration for which the driving component 6 needs to drive the baffle 5 to rotate, so that the controller controls the starting duration of the driving component 6, and further adjusts the state of the baffle 5. In addition, an angle sensor can be added to judge whether the baffle 5 rotates to the blocking or releasing state by monitoring the rotation angle of the baffle 5.

[0050] Optionally, the air filtering device further includes a second air quality sensor 9. The second air quality sensor 9 is fixedly connected to the housing 1 and is used to monitor the air quality after being filtered by the filter element 4. The output end of the second air quality sensor 9 is communicatively connected to the input end of the controller. This setting facilitates the personnel in the cockpit to obtain the air quality situation after filtration in real time, that is, the air quality situation delivered into the vehicle.

[0051] The second air quality sensor 9 monitors the filtered particulate matter concentration data after being filtered by the filter element 4 in real time and transmits the filtered particulate matter concentration data to the controller in real time. The controller transmits the filtered particulate matter concentration data to the in-vehicle display device, such as a display screen, for the personnel in the vehicle to observe intuitively.

[0052] Figure 6 For Figure 1 another perspective cross-sectional view of the air filtering device shown, as Figure 6As shown, optionally, the filter element 4 includes a first filter element 41 and a second filter element 42 arranged in a stacked manner. The structure of the double-layer filter element 4 with different filtration precisions can not only improve the filtration efficiency but also extend the service life of the filter element 4.

[0053] As Figure 6 shown, in this embodiment, the first filter element 41 and the second filter element 42 are arranged in a stacked manner. The first filter element 41 that overlaps with the bracket 2 at the lower part, and the second filter element 42 that is far from the bracket 2 at the upper part. The two are in contact and fit together without gaps in the middle. The filtration precision of the first filter element 41 is less than that of the second filter element 42. Specifically, the first filter element 41 is a standard environment filter element that can filter harmful substances such as PM2.5 and nitrogen oxides, and the second filter element 42 is a HEPA (High Efficiency Particulate Air) filter element that can efficiently filter PM1 and ultrafine particles. According to the actual application situation, the specific filtration precisions of the first filter element 41 and the second filter element 42 can be adjusted accordingly.

[0054] Optionally, the drive assembly 6 includes a motor 61 and a rotating shaft 62. The motor 61 is fixedly connected to the housing 1; the opposite ends of the rotating shaft 62 are rotatably connected to the housing 1. One end of the rotating shaft 62 is fixedly connected to the output shaft of the motor 61, and the baffle 5 is fixedly connected to the rotating shaft 62. This setting simplifies the structural composition of the drive assembly 6 and facilitates assembly and operation.

[0055] As Figure 2 shown, in this embodiment, the motor 61 is fixed to the outer wall of the housing 1. Through holes are respectively formed through the left and right side walls of the housing 1. The opposite ends of the rotating shaft 62 are respectively inserted into the through holes on both sides and are rotatably connected to the housing 1 by means of bearings. The left end of the rotating shaft 62 penetrates the housing 1 and is fixedly connected to the output shaft of the motor 61. The baffle 5 is fixedly connected to the rotating shaft 62. When the state of the baffle 5 needs to be adjusted, the motor 61 is started, and the output shaft of the motor 61 rotates to drive the rotating shaft 62 and the baffle 5 fixedly connected thereto to rotate synchronously. The control end of the drive assembly 6 is also the control end of the motor 61. When a controller is provided, the output end of the controller is communicatively connected to the control end of the motor 61.

[0056] Optionally, the air filtration device further includes a first fixing member 10 and a second fixing member 11. The opposite ends of the first fixing member 10 are respectively connected to the fixing plate 3 and the housing 1; the second fixing member 11 is sleeved on the rotating shaft 62, is rotatably connected to the rotating shaft 62, and is detachably connected to the first fixing member 10. With this setting, through the connection of the first fixing member 10 and the second fixing member 11, further support for the rotating shaft 62 is realized, ensuring the stability of the rotation of the rotating shaft 62.

[0057] As Figure 1 and Figure 2As shown, in this embodiment, the upper end of the first fixing member 10 is fixed to approximately the central position of the length of the upper sidewall of the housing 1, and the lower end is fixed to approximately the central position of the length of the fixing plate 3. In order not to interfere with the rotating shaft 62, an avoidance structure can be provided on the first fixing member 10. For example, the position of the first fixing member 10 corresponding to the rotating shaft 62 is set to be arc-shaped, so that the rotating shaft 62 can pass through the arc section smoothly. Correspondingly, the second fixing member 11 is fixed to approximately the central position of the length of the rotating shaft 62, and the second fixing member 11 and the first fixing member 10 can be detachably connected by means of bolts. As Figure 2 and Figure 4 As shown, after the second fixing member 11 is sleeved on the rotating shaft 62, the baffle 5 is divided into left and right parts. When the baffles 5 on both sides are vertically arranged, the spaces between the fixing plate 3 on both sides of the second fixing member 11 and the inner wall of the upper housing 1 are blocked respectively. After the second fixing member 11 is connected to the first fixing member 10, the position where they are located can be blocked, and the air flow cannot pass through. Therefore, the cooperation of the two parts of the baffle 5 and the second fixing member 11 and the first fixing member 10 can completely block the space between the fixing plate 3 and the inner wall of the upper housing 1. According to the actual application situation, the first fixing member 10 and the second fixing member 11 can adopt any detachable connection method, and the specific shape and size can be matched and adjusted as long as they can provide support for the rotating shaft 62 and can cooperate with the baffle 5 to achieve a complete blocking effect.

[0058] Optionally, the air filtering device further includes a first connecting member 12 and a second connecting member 13. The first connecting member 12 is fixedly connected to the fixing plate 3; the second connecting member 13 is fixedly connected to the bracket 2 and is detachably connected to the first connecting member 12. With this setting, the connection between the bracket 2 and the fixing plate 3 is realized by means of the connection of the first connecting member 12 and the second connecting member 13, preventing the position of the bracket 2 from moving and improving the stability of the bracket 2.

[0059] As Figure 1 and Figure 2 shown, in this embodiment, four first connecting members 12 are fixedly arranged at equal intervals on the end face of the fixing plate 3 facing the opening. Correspondingly, four second connecting members 13 are fixedly arranged at equal intervals on the end face of the bracket 2 facing the opening. Each second connecting member 13 is arranged in a structure bent upward and is clamped with the corresponding first connecting member 12. According to the actual application situation, the number of the first connecting member 12 and the second connecting member 13 and their specific shapes can be matched and adjusted as long as the two can achieve detachable connection.

[0060] Figure 7 For Figure 1 the schematic diagram of the connection relationship between the upper housing of the air filtering device shown and the air outlet pipe; Figure 8 For Figure 1 the schematic diagram of the lower housing of the air filtering device shown. As Figure 7 andFigure 8 As shown, optionally, the housing 1 includes an upper housing 101 and a lower housing 102 that are detachably connected, and the upper housing 101 and the lower housing 102 enclose a receiving cavity. This arrangement facilitates operations such as replacing and repairing the components inside the housing 1.

[0061] As Figure 7 and Figure 8 shown, in this embodiment, the fixing plate 3 is fixed to the inner wall of the upper housing 101 and is located at one end close to the lower housing 102. The rotating shaft 62 is rotatably connected to the side wall of the lower housing 102. The bracket 2 is arranged inside the lower housing 102, and the circumferences of the upper housing 101 and the lower housing 102 are detachably connected by bolts.

[0062] The present invention also provides an air conditioning system, including the air filtering device described in any of the above embodiments. The air outlet pipe 7 of the air filtering device is communicated with the air inlet of the air conditioning system.

[0063] When using the air conditioning system of the present invention, when the outside air quality is poor, the space above the fixing plate 3 is blocked by the baffle 5, so that all the air flows through the space below the bracket 2 and is filtered by the filter element 4. When the outside air quality is very good, the baffle 5 is driven to release the space above the fixing plate 3, so that most of the air flow does not pass through the filter element 4, but flows through the space above the fixing plate 3 and is directly discharged from the air outlet pipe 7. The filter element 4 is not always in a working state, which is beneficial to extending the service life of the filter element 4.

[0064] The present invention also provides a vehicle, including the air conditioning system described in the above embodiments.

[0065] When using the vehicle of the present invention, when the outside air quality is poor, the space above the fixing plate 3 is blocked by the baffle 5, so that all the air flows through the space below the bracket 2 and is filtered by the filter element 4. When the outside air quality is very good, the baffle 5 is driven to release the space above the fixing plate 3, so that most of the air flow does not pass through the filter element 4, but flows through the space above the fixing plate 3 and is directly discharged from the air outlet pipe 7. The filter element 4 is not always in a working state, which is beneficial to extending the service life of the filter element 4.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An air filtration device, characterized in that, include: A housing, wherein a receiving cavity is provided in the housing, and one side of the housing is open; A bracket, the bracket is mounted in the accommodating cavity, and a flow hole is opened through the bracket; A fixing plate, which is mounted on the bracket, disposed toward the opening, and fixedly connected to the inner wall of the shell; A filter element, the filter element is mounted on the bracket and is located on a side of the fixing plate facing away from the opening, and the housing is provided with an air outlet communicating with the accommodating cavity above the filter element; a baffle, the baffle being rotatably connected to the housing above the fixing plate and disposed toward the opening; A driving assembly, wherein the driving assembly is connected to the baffle plate to drive the baffle plate to rotate, and the baffle plate blocks or releases the space between the fixing plate and the inner wall of the housing above; An air outlet pipe is communicated with the air outlet.

2. The air filtration device according to claim 1, characterized in that, Also includes: A first air quality sensor, the first air quality sensor is fixedly connected to the housing and is used to monitor the external air quality; A controller, wherein an input end of the controller is communicatively connected to an output end of the first air quality sensor, and an output end of the controller is communicatively connected to a control end of the drive assembly.

3. The air filtering device according to claim 2, characterized in that Also includes: A second air quality sensor is fixedly connected to the housing and is used to monitor the quality of air filtered by the filter element. An output end of the second air quality sensor is communicatively connected to an input end of the controller.

4. The air filter device according to any one of claims 1 to 3, characterized in that: The filter element comprises a first filter element and a second filter element which are stacked.

5. The air filtration device according to any one of claims 1 to 3, characterized in that, The drive assembly comprises: A motor, wherein the motor is fixedly connected to the housing; A rotating shaft, two opposite ends of the rotating shaft are rotatably connected to the shell, one end of the rotating shaft is fixedly connected to the output shaft of the motor, and the baffle is fixedly connected to the rotating shaft.

6. The air filtration device according to claim 5, characterized in that, Also includes: A first fixing member, wherein opposite ends of the first fixing member are respectively connected to the fixing plate and the housing; The second fixing member is sleeved with the rotating shaft, rotatably connected to the rotating shaft, and detachably connected to the first fixing member.

7. The air filtration device according to any one of claims 1 to 3, characterized in that, Also includes: a first connecting member, the first connecting member being fixedly connected to the fixing plate; A second connecting member is fixedly connected to the bracket and detachably connected to the first connecting member.

8. The air filtering device according to any one of claims 1 to 3, characterized in that : The shell comprises an upper shell and a lower shell which are detachably connected, and the upper shell and the lower shell enclose the accommodating cavity.

9. An air conditioning system, characterized in that, It comprises the air filter device according to any one of claims 1 to 8, wherein the air outlet pipe of the air filter device is connected to the air inlet of the air conditioning system.

10. A vehicle, characterized in that, Includes the air conditioning system as described in claim 9.

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