Air handling device

Abstract

The utility model discloses an air treatment equipment relates to air treatment technical field, and air treatment equipment includes main part, first filter structure, second filter structure and switch subassembly. The main part is equipped with the wind cavity, and the wind cavity is linked first air inlet, second air inlet and air outlet. The first filter structure is located at first air inlet, and including the first filter part for purifying the air current of inlet. The second filter structure is located in the wind cavity, and including the movable second filter part, and it can switch between the working state and the bypass state, make the second filter part be located in the air current path and purify, or remove to the position of making way, make the air current go around. The shelter of switch subassembly is used for opening or closing second air inlet. Through the state of adjusting shelter and second filter part, realize the switch of different purification mode. Under the specific mode, make the unnecessary filter part exit the air current path or adjust the air inlet path to reduce the wind resistance, optimize the air current distribution, satisfy a variety of use scene demand.

Description

Technical Field

[0001] This utility model relates to the field of air treatment technology, and in particular to an air treatment device. Background Technology

[0002] In the field of air purification technology, to effectively remove different pollutants, multiple filter components with different functions are typically configured. For example, HEPA filters are used to remove particulate matter, while filters containing formaldehyde catalysts are used to degrade gaseous pollutants such as formaldehyde. In practical applications, multiple filter components are often arranged sequentially along the air duct. However, their stacking increases airflow resistance, affecting the overall airflow and purification efficiency. Especially when some filters are not needed, their presence in the air duct creates unnecessary airflow resistance, reducing system energy efficiency and the purification efficiency of the remaining filters. Therefore, how to optimize the configuration and operation of filter components to reduce airflow resistance while achieving multi-mode purification and improving purification efficiency in specific modes has become a pressing technical problem to be solved in this field. Utility Model Content

[0003] The main objective of this invention is to propose an air treatment device that aims to achieve targeted purification of different pollutants and optimize airflow organization in a specific mode to reduce ineffective resistance.

[0004] To achieve the above objectives, the air handling equipment proposed in this utility model includes:

[0005] The main body has a wind cavity, and a first air inlet, a second air inlet, and an air outlet communicating with the wind cavity;

[0006] The first filtration structure includes a first filtration section disposed at the first air inlet to purify the airflow flowing in from the first air inlet.

[0007] A second filter structure is disposed within the air cavity. The second filter structure includes at least one second filter element, which is movably disposed such that the second filter structure has an operating state and a bypass state. In the operating state, the second filter element is located in the airflow path to purify the airflow. In the bypass state, the second filter element is moved to a clearance position so that the airflow can bypass the second filter element and flow to the air outlet.

[0008] The switching assembly includes a movably disposed shield for opening / closing the second air inlet during its active stroke.

[0009] In one embodiment, the second filter structure further includes a mounting bracket having a mounting opening;

[0010] The second filter section is rotatably mounted on the mounting bracket about a rotation axis extending along the axial direction of the main body, and is provided corresponding to the mounting port;

[0011] In the operating state, the second filter is embedded in the mounting port;

[0012] In the bypass state, the second filter rotates relative to the mounting bracket to define an air gap between the second filter and the mounting bracket for airflow.

[0013] In one embodiment, the mounting frame is arranged in a ring shape, and multiple mounting ports are provided, with the multiple mounting ports arranged at intervals along the circumference of the mounting frame;

[0014] Multiple second filter sections are provided, and each second filter section is installed in a corresponding mounting port.

[0015] In one embodiment, the second filtering structure further includes:

[0016] A first drive motor is mounted on the mounting bracket; and

[0017] The linkage mechanism is connected to the first drive motor and multiple second filter sections so that the multiple second filter sections rotate synchronously.

[0018] In one embodiment, the linkage mechanism includes:

[0019] The drive gear is coaxially connected to the rotating shaft of the first drive motor;

[0020] A transmission gear, rotatably mounted on the main body, meshes with the drive gear; and,

[0021] Multiple driven gears are arranged at intervals along the circumference of the transmission gear. Each driven gear meshes with the transmission gear and is coaxially connected to the corresponding second filter section to drive the corresponding second filter section to rotate.

[0022] In one embodiment, an angle limiting mechanism is provided between the transmission gear and the main body, the angle limiting mechanism being used to limit the rotation angle of the transmission gear.

[0023] In one embodiment, the angle limiting mechanism includes a limiting groove disposed on one of the transmission gear and the main body, and a limiting mating part disposed on the other. The limiting groove extends circumferentially along the transmission gear, and the limiting mating part passes through the limiting groove. When the transmission gear rotates, the limiting mating part abuts against both ends of the limiting groove to limit the rotation angle of the transmission gear within a preset range.

[0024] In one embodiment, the blocking portion is movably disposed along the axial direction of the main body;

[0025] The switching assembly further includes:

[0026] A first rack extends along the axial direction of the main body and is fixedly connected to the shielding part;

[0027] A first driving gear meshes with the first rack, and the first driving gear is rotatably configured to drive the first rack to move the blocking part; and

[0028] The second drive motor drives the first drive gear to rotate.

[0029] In one embodiment, the blocking portion is arranged in a ring shape;

[0030] Two first racks are provided, and the two first racks are fixedly connected to the two radial sides of the blocking part;

[0031] The switching assembly further includes a transmission part, which includes a transmission rod extending radially along the main body and two intermediate gears disposed at both ends of the transmission rod. The transmission rod is rotatably mounted on the main body about its axis, and the two intermediate gears respectively mesh with the two first racks.

[0032] In one embodiment, the switch assembly further includes a guide structure disposed between the shielding portion and the main body. The guide structure includes a guide hole disposed on one of the main body and the shielding portion, and a guide post disposed on the other. The guide post extends along the axial direction of the main body and passes through the guide hole to slide with the guide hole.

[0033] In one embodiment, the main body is provided with a storage groove, the opening of the storage groove faces the second air inlet, and the shielding part is movably provided along the depth direction of the storage groove to shield the second air inlet when moving out of the storage groove.

[0034] In one embodiment, the second air inlet is located at the center of the main body in its axial direction.

[0035] This utility model also provides an air handling device, the air handling device comprising:

[0036] The main body has a wind cavity, and a first air inlet, a second air inlet, and an air outlet communicating with the wind cavity;

[0037] A filtration structure includes a first filtration structure and a second filtration structure arranged in a ring. The first filtration structure is arranged around the periphery of the second filtration structure. The first filtration structure includes a first filter section disposed at a first air inlet. The second filtration structure is disposed within the air cavity and includes at least one second filter section. The second filter section is movably disposed such that the second filtration structure has a working state and a bypass state. In the working state, the second filter section is located in the airflow path to purify the airflow. In the bypass state, the second filter section is moved to a clearance position so that the airflow can bypass the second filter section and flow to the air outlet.

[0038] The switching assembly includes a movably disposed shield for opening / closing the second air inlet during its active stroke.

[0039] This utility model also provides an air handling device, the air handling device comprising:

[0040] The main body has a wind cavity, and a first air inlet, a second air inlet, and an air outlet communicating with the wind cavity;

[0041] The first filtration structure includes a first filtration section disposed at the first air inlet to purify the airflow flowing in from the first air inlet.

[0042] A second filtration structure is disposed within the air cavity. The second filtration structure includes a plurality of second filter sections, each rotatably disposed such that the second filtration structure has an operating state and a bypass state. In the operating state, the plurality of second filter sections are positioned along the airflow path to purify the airflow. In the bypass state, the plurality of second filter sections are moved to a clearance position, allowing the airflow to bypass the second filter sections and flow towards the air outlet.

[0043] The linkage mechanism includes a rotatable transmission gear and a plurality of driven gears. Each driven gear meshes with the transmission gear, and each driven gear is coaxially connected to the corresponding second filter section to drive the corresponding second filter section to rotate.

[0044] This utility model also provides an air handling device, the air handling device comprising:

[0045] The main body has a wind cavity, and a third air inlet and air outlet communicating with the wind cavity;

[0046] A first filtration structure includes a movably disposed first filter section. The first filter section has, during its active stroke, a first working position located at the third air inlet and a first clearance position at least partially offset from the third air inlet. In the first working position, airflow enters the air cavity from the third air inlet through the first filter section. In the first clearance position, airflow can bypass the first filter section and flow into the air cavity through the third air inlet.

[0047] A second filter structure is disposed within the air cavity. The second filter structure includes at least one second filter section, which is movably disposed such that the second filter structure has a working state and a bypass state. In the working state, the second filter section is located on the airflow path to purify the airflow. In the bypass state, the second filter section is moved to a second clearance position so that the airflow can bypass the second filter section and flow to the air outlet.

[0048] In one embodiment, the air handling equipment includes an air purifier.

[0049] The technical solution provided by this utility model has at least the following advantages:

[0050] By incorporating a movable second filter and an openable / closable second air inlet shield, and combining the different purification functions of the first and second filters, multiple purification modes can be switched. In practical use, the airflow path and participating filter components can be flexibly controlled by adjusting the opening and closing state of the shield and the position of the second filter, depending on the type of pollutants to be removed. When a filter component does not need to participate in purification, it can be removed from the airflow channel or its corresponding air inlet path can be closed to avoid unnecessary wind resistance. When focusing on removing a specific type of pollutant, the overall system resistance can be reduced, increasing the airflow through the target filter, thereby improving the purification effect of that filter. This allows the system to adapt to different air quality scenarios and meet users' targeted purification needs for different types of pollutants, such as particulate matter and gaseous pollutants.

[0051] By setting both the first and second filter structures as annular and coaxially arranged, a concentric annular structure with inner and outer nesting is formed, which is adapted to the spatial characteristics of the cylindrical body. This improves the utilization rate of the internal space and also ensures that the airflow can come into contact with the filter material from all directions, avoiding local overload and facilitating uniform airflow distribution.

[0052] Through a linkage mechanism consisting of a transmission gear and multiple driven gears, multiple second filter sections are connected by transmission, thereby achieving synchronous rotation of multiple second filter sections. This increases the rotation angle of the second filter sections, allowing each second filter section to open to the maximum extent as needed, thus minimizing the air resistance of the first filter section.

[0053] By removing the obstruction section and directly setting the first filter section to a movable state, the airflow path and the filter combination involved in purification can be flexibly controlled by adjusting the positions of the first and second filters when the third air inlet is opened and closed, thus simplifying the overall structure and reducing the number of moving parts. Attached Figure Description

[0054] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0055] Figure 1 A schematic diagram of the structure of an embodiment of the air handling equipment provided by this utility model;

[0056] Figure 2 for Figure 1 Explosion diagram of an air handling unit;

[0057] Figure 3 for Figure 1 A schematic diagram of the second filter structure in operation.

[0058] Figure 4 for Figure 1 A schematic diagram of the second filter structure in the bypass state;

[0059] Figure 5 for Figure 1 A schematic diagram of the first filter structure in operation.

[0060] Figure 6 for Figure 1 A schematic diagram of the structure when both the first and second filter structures are in operation;

[0061] Figure 7 for Figure 1 A schematic diagram of the second filter structure in operation.

[0062] Figure 8 for Figure 1 A schematic diagram of the linkage mechanism in a medium-sized air handling unit;

[0063] Figure 9 for Figure 1 Schematic diagram of the structure of the switch assembly;

[0064] Figure 10 for Figure 9Cross-sectional schematic diagram of the switch assembly;

[0065] Figure 11 A schematic diagram of the structure of the first filter section in the first working position in another embodiment of the air handling equipment provided by this utility model;

[0066] Figure 12 for Figure 11 A schematic diagram of the structure of the second filter section in the air handling unit when it is in the first clearance position.

[0067] Explanation of icon numbers:

[0068] 100. Air handling equipment; 10. Main body; a. Air cavity; a1. First air inlet; a2. Second air inlet; a3. Third air inlet; a4. Air outlet; 11. Limiting fitting part; 10a. Storage groove; 20. First filter structure; 21. First filter part; 30. Second filter structure; 31. Second filter part; 32. Mounting bracket; 32a. Mounting port; 33. First drive motor; 34. Drive gear; 35. Transmission gear; 35a. Limiting groove; 36. Driven gear; 40. Switch assembly; 41. Shielding part; 42. First rack; 43. First driving gear; 44. Second drive motor; 45. Transmission part; 451. Transmission rod; 452. Intermediate gear; 50. Guide structure; 51. Guide hole; 52. Guide post.

[0069] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0070] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0071] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0072] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0073] This utility model proposes an air handling device 100, which is suitable for various places requiring air purification, such as homes, offices, hospitals, laboratories, and vehicles. It can be integrated into air purifiers, air conditioners, fresh air systems, fan boxes, etc., to remove particulate pollutants such as dust, hair, pollen, and PM2.5 from the air. The air handling device 100 can also be applied to mobile purification equipment to achieve indoor air circulation and purification. For ease of explanation, the following description uses the application of this device in a vertical air purifier as an example to specifically describe its filtration method. For other application forms, such as vehicle-mounted purification modules, portable purifiers, or embedded fresh air units, the structure can be adapted to meet the actual space and airflow requirements; this specification does not limit this.

[0074] Please see Figure 1 ,as well as Figures 5 to 7 In a first embodiment of this utility model, the air handling device 100 includes a main body 10, a first filter structure 20, a second filter structure 30, and a switching assembly 40. The main body 10 has an air cavity a, and a first air inlet a1, a second air inlet a2, and an air outlet a4 communicating with the air cavity a. The first filter structure 20 includes a first filter section 21 disposed at the first air inlet a1 to purify the airflow flowing in from the first air inlet a1. The second filter structure 30 is disposed in the air cavity a, and the second filter structure 30 includes at least one second filter section 31. The second filter section 31 is movably disposed such that the second filter structure 30 has a working state and a bypass state. In the working state, the second filter section 31 is located on the airflow path to purify the airflow. In the bypass state, the second filter section 31 is moved to a clearance position so that the airflow can bypass the second filter section 31 and flow to the air outlet a4. The switch assembly 40 includes a movably disposed shield 41 for opening / closing the second air inlet a2 during its active stroke.

[0075] Specifically, the main body of the equipment 10 is provided with a wind cavity a, which is connected to at least one first air inlet a1, a second air inlet a2 and an air outlet a4, forming the main basic airflow channel.

[0076] The first filter structure 20 is disposed at the first air inlet a1, including a first filter section 21, for processing the air entering from the first air inlet a1. The first filter section 21 can be configured as an annular structure, or it can be adapted to be circular, square, polygonal or other regular or irregular shapes according to the cross-sectional shape of the air inlet channel in the air cavity a. The specific shape can be determined according to the internal space layout and airflow design requirements of the equipment, and the embodiments in this specification do not limit it in this way.

[0077] Understandably, the first filter unit 21 is installed at the first air inlet a1, and its shape matches the flow cross-section of the air inlet to ensure that almost all airflow passes through its filtration area, avoiding bypass leakage. The first filter unit 21 can use a high-efficiency particulate filter, such as a HEPA filter, to intercept suspended particulate matter such as PM10 and PM2.5 in the air, achieving efficient removal of particulate pollutants. This filter can be composed of multiple layers of fiber material, possessing high particle capture efficiency, and is suitable for air purification in scenarios such as smog and dust.

[0078] The second filtration structure 30 is located inside the air cavity a. The second filtration structure 30 includes one or more second filtration sections 31. Each second filtration section 31 may employ a functional filter specifically designed to remove gaseous pollutants, such as a filter loaded with a formaldehyde decomposition catalyst. This catalyst converts formaldehyde into water and carbon dioxide through a catalytic oxidation reaction, achieving continuous purification of harmful gases such as formaldehyde. Such filters may be made of modified activated carbon, molecular sieves, or catalytic coating materials, possessing targeted chemical adsorption or decomposition capabilities.

[0079] Multiple second filter units 31 can be arranged side by side or layered within the air cavity a. The specific number and arrangement can be flexibly adjusted according to purification requirements and equipment structural space. The shape of the second filter unit 31 can be triangular, rectangular, pentagonal, or polygonal, or it can be arc-shaped, annular, or other geometric shapes adapted to the cross-section of the air duct to achieve a compact layout or uniform air distribution.

[0080] Each second filter unit 31 can move independently or switch states in conjunction, enabling it to switch between a working state and a bypass state. In the working state, the second filter unit 31 is located in the airflow path and participates in air purification; when switched to the bypass state, the second filter unit 31 moves to a side clearance position, allowing airflow to bypass it and pass directly through, thereby reducing the overall resistance of the air duct. The function of the second filter unit 31 can also be independently set, for example, specifically for treating formaldehyde or other harmful gases, thus complementing or differentiating it from the first filter unit 21.

[0081] In actual operation, the functions of the first filter unit 21 and the second filter unit 31 can complement each other. For example, the first filter unit 21 focuses on particulate matter purification, while the second filter unit 31 focuses on gaseous pollutant treatment. The combination of the two can cover complex pollution scenarios. By controlling the opening and closing of the second air inlet a2 through the shielding part 41, and by switching the second filter unit 31 between the working state and the bypass state, the equipment can dynamically adjust the filter combination and airflow path involved in purification in different modes to adapt to the actual air quality and user needs.

[0082] The switch assembly 40 is equipped with a movable shield 41 for opening or closing the second air inlet a2 during operation. The action of the shield 41 can be manually operated by the user or automatically controlled by a drive mechanism such as a motor. The drive method can be, for example, a rotating shaft, sliding rail movement, linkage transmission, or electromagnetic push rod, etc. The specific structure is not limited and can be selected according to the actual product design needs. The shield 41 and the second filter 31 cooperate with each other to realize the switching of multiple purification modes.

[0083] For example, when it is necessary to purify particulate matter and formaldehyde at the same time, the second air inlet a2 is closed by the shielding part 41, and the airflow can only enter from the first air inlet a1, passing through the first filter part 21 and the second filter part 31 which is in operation, to achieve composite purification.

[0084] When formaldehyde removal is required, the second air inlet a2 is opened in the shielding part 41. At this time, the airflow can directly enter the air chamber a from the second air inlet a2, avoiding the high wind resistance path of the first filter part 21 (such as HEPA filter). Most of the airflow enters through the second air inlet a2 and is concentrated through the second filter part 31, thereby improving its purification load capacity.

[0085] When enhanced particulate matter purification is required, the second air inlet a2 is closed, allowing all airflow to enter through the first air inlet a1 and the first filter section 21. At the same time, the second filter section 31 is switched to bypass mode and exits the air path, reducing system resistance and increasing the airflow through the first filter section 21, thereby enhancing the particulate matter removal effect.

[0086] By incorporating a movable second filter section 31 and an openable / closable second air inlet a2 shielding section 41, and combining the different purification functions of the first filter section 21 and the second filter section 31, multiple purification modes can be switched. In practical use, depending on the type of pollutants to be removed, the airflow path and the filtering components involved in the operation can be flexibly controlled by adjusting the opening and closing state of the shielding section 41 and the position of the second filter section 31. When a certain filtering component does not need to participate in purification, it can be removed from the airflow channel or the corresponding air inlet path can be closed to avoid unnecessary wind resistance. When focusing on removing a specific type of pollutant, the overall system resistance can be reduced, and the airflow through the target filter can be increased, thereby improving the purification effect of that filter. This allows it to adapt to different air quality scenarios and meet users' targeted purification needs for different types of pollutants such as particulate matter and gaseous pollutants.

[0087] Specifically, please refer to Figures 2 to 4 In this embodiment, the second filter structure 30 further includes a mounting bracket 32 ​​having a mounting opening 32a. The second filter portion 31 is rotatably mounted on the mounting bracket 32 ​​about a rotation axis extending axially along the main body 10, and is disposed corresponding to the mounting opening 32a. In the working state, the second filter portion 31 is embedded within the mounting opening 32a; in the bypass state, the second filter portion 31 rotates relative to the mounting bracket 32 ​​to define an air gap for airflow between the second filter portion 31 and the mounting bracket 32.

[0088] Specifically, the mounting bracket 32 ​​is disposed inside the air cavity a and is used to support and position the second filter unit 31. The mounting bracket 32 ​​is provided with a mounting port 32a, which penetrates the plate or frame area of ​​the mounting bracket 32 ​​and forms a predetermined channel for airflow.

[0089] Understandably, the shape of the mounting port 32a can be adapted to the shape of the second filter section 31, such as a rectangle, polygon, or circle. The specific size and outline are determined according to the second filter section 31 to ensure that the second filter section 31 can basically fill the mounting port 32a in the working state, thereby reducing the leakage of unfiltered airflow.

[0090] The second filter section 31 is rotatably mounted on the mounting bracket 32 ​​and rotates about a rotation axis that extends along the axial direction of the main body 10. Here, "axial" refers to the main direction of airflow in the main body 10, typically from the air inlet to the air outlet a4. The second filter section 31 is connected to the mounting bracket 32 ​​via a pivot, hinge structure, or bearing assembly, allowing it to rotate around this axis within the mounting opening 32a. In operation, the second filter section 31 rotates until it is embedded within the mounting opening 32a, with its filter surface essentially covering the opening. Airflow must pass through the second filter section 31 to continue flowing to the air outlet a4, thus achieving the purification of target pollutants (such as formaldehyde).

[0091] When it is necessary to switch to bypass mode, the second filter 31 rotates relative to the mounting bracket 32 ​​at a certain angle, such as 90 degrees or other predetermined angles, so that it no longer completely blocks the mounting opening 32a. At this time, an air passage gap is formed between the second filter 31 and the mounting bracket 32. This gap serves as an airflow bypass channel, allowing air to bypass the second filter 31 and pass directly through.

[0092] The air gap can be distributed on one or more sides of the second filter section 31 in the circumferential direction. The specific size and distribution depend on the rotation angle and the design of the mounting port 32a to ensure sufficient flow area in the bypass state and reduce overall air resistance.

[0093] It should also be noted that the second filter unit 31 is rotatably mounted. Besides switching between a fully sealed installation port 32a operating state and a fully bypassed state, its rotation angle can be controlled according to purification requirements to remain in a partially open position. In this position, the second filter unit 31 only partially blocks the installation port 32a, allowing airflow to partially pass through its filter material, while the remaining airflow bypasses it via the formed air gap. By adjusting the rotation angle, the proportion of airflow through the second filter unit 31 can be controlled, thereby achieving graded adjustment of its purification efficiency, suitable for treating gaseous pollutants of different concentrations.

[0094] The angle adjustment of the second filter section 31 can be achieved through a motor, gear set, cam, or manual operation. For example, a micro motor can drive a gear transmission to rotate a shaft, thereby rotating the second filter section 31. This manual does not limit the specific driving method; it can be a linkage drive, a cam shaft drive, a lead screw structure, or an electromagnetic drive, etc. The specific method can be selected according to the product's spatial layout and control requirements, and is not limited here. The rotation process can be completed automatically by the control system or manually triggered by the user through the operating interface.

[0095] Specifically, in order to improve the flow capacity of the second filter structure 30 and enhance airflow uniformity, please refer to... Figures 3 to 4 In this embodiment, the mounting frame 32 is arranged in a ring shape, and multiple mounting ports 32a are provided, which are spaced apart along the circumference of the mounting frame 32. Multiple second filter parts 31 are provided, and each second filter part 31 is installed in a corresponding mounting port 32a.

[0096] Understandably, the mounting bracket 32 ​​extends around the central axis of the main body 10, with its central area enclosing an air outlet duct. After purification, the airflow flows through this duct to the air outlet a4. The annular mounting bracket 32 ​​can be fixed to the inner wall of the air cavity a, providing structural stability and facilitating cooperation with other internal components of the main body 10.

[0097] Multiple mounting ports 32a are evenly or non-uniformly spaced along the circumference of the mounting frame 32. The specific number and spacing can be determined according to the equipment size, air volume requirements, and filtration performance requirements. Each mounting port 32a is used to install an independent second filter unit 31. The arrangement of multiple mounting ports 32a makes the second filter structure 30 consist of multiple split-type filter units.

[0098] Multiple second filter sections 31 are provided, each corresponding to a different mounting port 32a. Each second filter section 31 can rotate independently or in conjunction with the other around the rotation axis to switch between its operating state and bypass state. The multiple second filter sections 31 are distributed circumferentially, ensuring that the airflow can contact the filter material from all directions, avoiding local overload and extending service life.

[0099] Understandably, corresponding to the second filter structure 30, the first air inlet a1 can be configured as an annular air inlet extending circumferentially along the main body 10, or composed of multiple air inlets distributed circumferentially, so that the airflow entering the air chamber a can act evenly on each of the second filter sections 31, improving the overall filtration efficiency. The annular mounting bracket 32 ​​works in conjunction with the circumferential air inlet design to achieve symmetrical distribution and balanced passage of airflow, reducing eddies or flow deviations.

[0100] By designing the mounting bracket 32 ​​as a ring and providing multiple mounting ports 32a and corresponding second filter sections 31 in the circumferential direction, a larger filtration area can be achieved within a compact space, improving the purification capacity per unit airflow. The multiple second filter sections 31 are distributed in a circumferential air intake structure, making the airflow distribution more uniform and avoiding local blockages or concentrated air resistance.

[0101] Specifically, please refer to Figure 3 , Figure 4 and Figure 8 In this embodiment, the second filter structure 30 further includes a first drive motor 33 and a linkage mechanism. The first drive motor 33 is mounted on the mounting bracket 32; the linkage mechanism is a transmission connection between the first drive motor 33 and a plurality of second filter sections 31, so that the plurality of second filter sections 31 rotate synchronously.

[0102] Understandably, the first drive motor 33 is mounted on the mounting bracket 32 ​​and serves as the common driving power source for multiple second filter units 31. The motor type can be a stepper motor, DC motor, or geared motor, etc., selected specifically according to the load and control requirements.

[0103] The linkage mechanism connects the first drive motor 33 to multiple second filter sections 31, transmitting power and ensuring that each second filter section 31 rotates synchronously, guaranteeing consistent opening and closing actions and preventing airflow leakage or uneven resistance. The linkage mechanism can take the form of a gear set, synchronous belt and pulley, chain and sprocket, or linkage structure, etc., with the specific form determined according to the installation space and transmission requirements.

[0104] Through the cooperation of the first drive motor 33 and the linkage mechanism, multiple second filter sections 31 can switch states synchronously to improve the stability of airflow control and the continuity of the purification process.

[0105] Based on the above, please refer to the following for the specific structure of the linkage mechanism. Figure 3 , Figure 4 and Figure 8 In one specific embodiment, the linkage mechanism includes a drive gear 34, a transmission gear 35, and multiple driven gears 36. The drive gear 34 is coaxially connected to the rotating shaft of the first drive motor 33, and the motor directly drives the drive gear 34 to rotate when it is running. The transmission gear 35 is rotatably mounted on the main body 10, meshes with the drive gear 34, receives the power output from the drive gear 34, and rotates accordingly. The transmission gear 35 serves as an intermediate transmission component, playing a role in power distribution.

[0106] Multiple driven gears 36 are arranged at intervals along the circumference of the transmission gear 35. Each driven gear 36 meshes with the transmission gear 35 and is coaxially connected to the corresponding second filter section 31. When the transmission gear 35 rotates, it drives all driven gears 36 to rotate synchronously through the gear meshing relationship, thereby driving each second filter section 31 to rotate around its axis simultaneously, realizing state switching.

[0107] The number of driven gears 36 is the same as the number of second filter units 31, and their layout corresponds to the positions of the filter units on the mounting bracket 32. This specification does not limit the specific type, material, or mounting structure of the gears; external meshing, internal meshing, or helical gears are all applicable, as long as it can achieve synchronous operation of each second filter unit 31 by a single motor through the meshing of drive gear 34, transmission gear 35, and multiple driven gears 36. The specific implementation method is not limited.

[0108] By assigning a driven gear 36 to each of the second filter sections 31 to achieve rotation, the rotation angle of the second filter section 31 can be increased, allowing each second filter section 31 to open to the maximum extent as needed, thereby minimizing the air resistance of the first filter section 21.

[0109] Furthermore, to avoid positioning inaccuracies caused by motor rotation angle deviations or transmission backlash, please refer to [link / reference needed]. Figure 8 In this embodiment, an angle limiting mechanism is provided between the transmission gear 35 and the main body 10. The angle limiting mechanism is used to limit the rotation angle of the transmission gear 35.

[0110] An angle limiting mechanism is positioned between the transmission gear 35 and the main body 10. Its function is to limit the maximum rotation angle of the transmission gear 35 relative to the main body 10. This mechanism does not rely on the control precision of the first drive motor 33 on the rotation axis, but rather achieves rigid constraint on the rotation stroke of the transmission gear 35 through a mechanical structure. Even if the motor has overshoot, backlash, or control signal errors, the angle limiting mechanism can still ensure that the transmission gear 35 operates within a preset angle range, improving the positioning accuracy each time.

[0111] The angle limiting mechanism can adopt various structural forms, such as limiting protrusions or limiting posts set on the main body 10, which cooperate with the limiting groove 35a or arc-shaped hole formed on the edge of the transmission gear 35; or limiting protrusions are set on the transmission gear 35, which abut against the fixed block on the main body 10.

[0112] In one specific embodiment, the angle limiting mechanism includes a limiting groove 35a and a limiting engagement part 11. The limiting groove 35a is disposed on either the transmission gear 35 or the main body 10, extending in an arc shape along the circumference of the transmission gear 35, and its length corresponds to the required rotation angle range. The limiting engagement part 11 is disposed on the other component and passes through the limiting groove 35a to form a sliding fit. When the transmission gear 35 rotates, the limiting engagement part 11 slides along the limiting groove 35a and is stopped at both ends of the groove, thereby preventing the transmission gear 35 from continuing to rotate and limiting its rotation angle within the set range.

[0113] It should be noted that the arc length of the limiting groove 35a is designed according to the actual turning angle requirements. The limiting mating part 11 can adopt a structure such as a pin, screw or protrusion. The sliding mating clearance is moderate to ensure smooth operation and accurate positioning.

[0114] The specific location and number of the limiting groove 35a and the limiting mating part 11 can be flexibly adjusted according to the structural layout. For example, the limiting groove 35a can be on the transmission gear 35 and the limiting mating part 11 can be on the main body 10, or vice versa. The number can be one or more sets, and this specification does not limit this in the embodiments.

[0115] It is understood that in other embodiments, the second filter structure 30 may include a plurality of first drive motors 33, the number of which is the same as the number of second filter sections 31, and each first drive motor 33 is used to control the rotation of a corresponding second filter section 31. In this way, each second filter section 31 can rotate independently about a rotation axis to switch its respective operating state or bypass state.

[0116] Based on the aforementioned switch assembly 40, please refer to Figure 9 and Figure 10Specifically, in this embodiment, the switch assembly 40 includes a first rack 42, a first drive gear 43, and a second drive motor 44. The first rack 42 extends and is fixed along the axial direction of the main body 10, and is fixedly connected to the blocking part 41, with both moving synchronously. The first rack 42 has teeth that mesh with the first drive gear 43. The first drive gear 43 is rotatably mounted on a bracket or mounting base of the main body 10, and its rotation axis is perpendicular to the axial direction of the main body 10. When the first drive gear 43 rotates, it converts the rotational motion into linear motion of the first rack 42 through meshing with it, thereby driving the blocking part 41 to reciprocate along the axial direction.

[0117] The second drive motor 44 serves as the power source for driving, and is connected to the first drive gear 43. The motor output shaft is coaxially connected to the first drive gear 43 or driven through a coupling. The control system controls the motor to rotate forward or backward, thereby realizing the opening and closing action of the shielding part 41.

[0118] It should be noted that the second drive motor 44 can be a stepper motor, DC geared motor, or other similar type, possessing sufficient torque output capability to ensure reliable operation during long-term use. Furthermore, the rack length is set according to the required stroke of the blocking part 41, and the gear module and number of teeth are reasonably matched to avoid skipping teeth or jamming.

[0119] This specification does not limit the arrangement of the first rack 42 and the first drive gear 43. For example, the transmission structure can be located on the outside or inside the main body 10, as long as it can achieve axial drive of the shielding part 41.

[0120] It is understood that in other embodiments, the switch assembly 40 may also open / close the blocking part 41 by means of a lead screw or other means, which is not limited here.

[0121] Based on the above, when the first air inlet a1 is configured as an annular air inlet extending circumferentially along the main body 10, or is composed of multiple air inlets distributed circumferentially, the shielding part 41 also needs to be configured as annular, or as multiple, to open and close the first air inlet a1.

[0122] To avoid jamming and misalignment that could easily occur if the ring-shaped blocking part 41 only has the aforementioned rack and pinion structure on one side; or to ensure that the blocking part 41 can simultaneously open and close the two air inlets a1 of the two circumferentially distributed air inlet groups when it is configured as two components, one for opening and the other for closing the other, in this embodiment, two first racks 42 are provided, respectively fixedly connected to two opposite sides of the blocking part 41 in the radial direction, for example, symmetrically arranged along the diametrical direction. Both first racks 42 extend axially along the main body 10 and move synchronously with the blocking part 41. By using a double rack configuration, the two ends or both sides of the blocking part 41 can be driven, avoiding tilting, jamming, or uneven wear caused by unilateral force.

[0123] The switch assembly 40 also includes a transmission part 45 for synchronously driving the two first racks 42. The transmission part 45 includes a transmission rod 451 and two intermediate gears 452. The transmission rod 451 extends radially along the main body 10, with an intermediate gear 452 mounted at each end, and is rotatably mounted on a fixed structure of the main body 10 about its own axis. The two intermediate gears 452 mesh with the two first racks 42 respectively, forming a gear transmission connection.

[0124] When the first driving gear 43 drives one of the first racks 42 to move, the first rack 42 drives the intermediate gear 452 meshing with it to rotate. The intermediate gear 452 is linked to the other intermediate gear 452 through the transmission rod 451, thereby driving the other first rack 42 to move synchronously. Since the two intermediate gears 452 are mounted on the same transmission rod 451 and rotate at the same angle, it can be ensured that the first racks 42 on both sides move the same distance, realizing the smooth and synchronous axial movement of the blocking part 41.

[0125] By setting up an annular shielding part 41, a double rack and a transmission rod 451 with an intermediate gear 452, symmetrical driving of the shielding part 41 can be achieved, avoiding motion bias.

[0126] Furthermore, to prevent the shielding part 41 from wobbling, tilting, or moving unevenly during axial movement, please refer to... Figure 9 In this embodiment, the switch assembly 40 further includes a guide structure 50 disposed between the blocking portion 41 and the main body 10. The guide structure 50 includes a guide hole 51 and a guide post 52, which are respectively disposed between the blocking portion 41 and the main body 10. The guide post 52 extends axially along the main body 10 and passes into the guide hole 51 to form a sliding fit. When the blocking portion 41 moves, the guide post 52 slides synchronously in the guide hole 51 to guide and constrain its movement path.

[0127] In other words, the guide hole 51 can be located in the main body 10, and the guide post 52 can be located in the shielding part 41; or vice versa. The specific arrangement is determined according to the structural layout. The guide post 52 is usually cylindrical, but can also be other cross-sectional shapes, and the guide hole 51 matches it. The fitting clearance is reasonable to ensure smooth sliding without excessive wobbling.

[0128] The guide structure 50 can be set in one or more places. When there are multiple places, they are arranged symmetrically along the circumference to improve the uniformity of force distribution.

[0129] This specification does not limit the specific form, number, or position of the guide hole 51 and guide post 52, as long as axial sliding guidance can be achieved. Other equivalent structures are within the scope of protection.

[0130] Specifically, please refer to Figure 6 and Figure 7 In this embodiment, the main body 10 is provided with a storage groove 10a, the opening of the storage groove 10a faces the second air inlet a2, and the shielding part 41 is movably provided along the depth direction of the storage groove 10a. When the shielding part 41 moves outward along the storage groove 10a, it gradually covers the second air inlet a2 and closes it; when the shielding part 41 moves inward along the storage groove 10a, it opens the second air inlet a2 and opens it.

[0131] Understandably, the shape of the storage groove 10a is adapted to the blocking part 41, and the groove wall guides and limits the movement of the blocking part 41, preventing deviation or shaking. The depth of the groove is determined according to the stroke of the blocking part 41 to ensure proper opening and closing. At the same time, the storage groove 10a provides a certain degree of protection for the blocking part 41, reducing external interference. This arrangement achieves both stable sliding of the blocking part 41 and a compact layout.

[0132] Furthermore, for a more efficient layout of the filtered airflow path, please refer to [link / reference needed]. Figure 1 and Figure 2 In this embodiment, the second air inlet a2 is located in the middle of the main body 10 along the axial direction, that is, in the middle area along the length of the equipment.

[0133] Because of this location, the upper and lower end spaces can be avoided, allowing the air inlet to be closer to the central area inside the air cavity a. When the shielding part 41 opens the second air inlet a2, outside air can directly enter the air cavity a from the middle of the main body 10, resulting in a short and concentrated airflow path.

[0134] With this configuration, since the second filter structure 30 is located inside the air cavity a, when air enters from the center, the airflow does not need to pass through the first filter section 21 or other pre-fabricated structures. This allows the airflow to act more directly and evenly on the second filter section 31, reducing flow loss and turbulence, and improving the purification efficiency of the inner second filter section 31. Simultaneously, the center air inlet position corresponds to the installation area of ​​the second filter structure 30, ensuring that the airflow immediately contacts the second filter section 31 upon entry, thus improving the utilization rate of the filter material.

[0135] In the second embodiment provided by this utility model, please refer to Figures 1 to 7 The air handling unit 100 includes a main body 10 and a filter structure. The main body 10 has an air cavity a, and a first air inlet a1, a second air inlet a2, and an air outlet a4 communicating with the air cavity a. The filter structure includes a first filter structure 20 and a second filter structure 30 arranged in a ring. The first filter structure 20 is arranged around the periphery of the second filter structure 30. The first filter structure 20 includes a first filter section 21 disposed at the first air inlet a1. The second filter structure 30 is disposed inside the air cavity a and includes at least one second filter section 31. The second filter section 31 is movably disposed such that the second filter structure 30 has an operating state and a bypass state. In the operating state, the second filter section 31 is located in the airflow path to purify the airflow. In the bypass state, the second filter section 31 is moved to a clearance position so that the airflow can bypass the second filter section 31 and flow to the air outlet a4. The switching assembly 40 includes a movably disposed shielding section 41 for opening / closing the second air inlet a2 during its active stroke.

[0136] Unlike the first embodiment, this embodiment mainly targets the air handling equipment 100 with a cylindrical body 10 structure.

[0137] Specifically, in this embodiment, the main body 10 is generally cylindrical and has an internal air cavity a. The air cavity a connects the first air inlet a1, the second air inlet a2, and the air outlet a4, forming a complete airflow channel. The first air inlet a1 can be located on the circumferential side wall or end of the main body 10, the second air inlet a2 is located on the circumference of the main body 10, and the air outlet a4 is located at the top or one axial end of the main body 10. This structure is suitable for vertical or horizontal air purification equipment, and is especially suitable for product designs with limited space or those that prioritize a simple appearance.

[0138] Both the first filter structure 20 and the second filter structure 30 are generally arranged in a ring shape and are arranged radially in sequence. The first filter structure 20 is arranged around the second filter structure 30, forming a concentric ring structure with inner and outer nesting. This makes full use of the annular space of the cylindrical body 10, improves the utilization rate of the internal space, and facilitates uniform airflow distribution.

[0139] The materials and installation methods of the first filter section 21 and the second filter section 31, as well as the structure and operation mode of the switch assembly 40, can all refer to the specific embodiments described above, and will not be detailed here.

[0140] By arranging both the first filter structure 20 and the second filter structure 30 in a ring shape and coaxially, the structure is adapted to the spatial characteristics of the cylindrical body 10, resulting in a compact structure and uniform airflow distribution. Combined with the openable and closable second air inlet a2 and the movable second filter section 31, flexible switching between multiple purification modes is achieved.

[0141] In this embodiment, the specific structure of the air handling device 100 includes at least one or more specific embodiments of the first embodiment of this utility model, which will not be described in detail here.

[0142] Please refer to the third embodiment provided in this utility model. Figure 8 The air handling unit 100 includes a main body 10, a first filter structure 20, a second filter structure 30, and a linkage mechanism. The main body 10 has an air cavity a, and a first air inlet a1, a second air inlet a2, and an air outlet a4 communicating with the air cavity a. The first filter structure 20 includes a first filter section 21 disposed at the first air inlet a1 to purify the airflow flowing in from the first air inlet a1. The second filter structure 30 is disposed in the air cavity a and includes a plurality of second filter sections 31. Each second filter section 31 is rotatably disposed so that the second filter structure 30 has a working state and a bypass state. In the working state, the plurality of second filter sections 31 are located in the airflow path to purify the airflow. In the bypass state, the plurality of second filter sections 31 are moved to a clearance position so that the airflow can bypass the second filter sections 31 and flow to the air outlet a4. The linkage mechanism includes a rotatable transmission gear 35 and a plurality of driven gears 36. Each driven gear 36 meshes with the transmission gear 35 and is coaxially connected to the corresponding second filter section 31 to drive the corresponding second filter section 31 to rotate.

[0143] In this embodiment, the second filter structure 30 includes a plurality of second filter sections 31. When the plurality of second filter sections 31 switch between the working state and the bypass state, the plurality of second filter sections 31 are driven to rotate synchronously by a linkage mechanism, thereby ensuring that the operation of each filter section is consistent.

[0144] Specifically, the linkage mechanism includes a transmission gear 35 and multiple driven gears 36. The transmission gear 35 is rotatably mounted inside the main body 10 or on a fixed bracket, serving as an intermediate element for power transmission. The multiple driven gears 36 are arranged at intervals along the circumference of the transmission gear 35, and each driven gear 36 meshes with the transmission gear 35 to form a gear transmission relationship. Each driven gear 36 is coaxially connected to the corresponding second filter section 31, i.e., fixed on the same rotating shaft. When the transmission gear 35 rotates, it drives all the driven gears 36 to rotate synchronously through meshing transmission, thereby driving each second filter section 31 to rotate simultaneously.

[0145] Power can be provided directly or indirectly by the first drive motor 33. The motor output shaft is connected to the transmission gear 35, and the motor's forward and reverse rotation is controlled by the control system to open and close the second filter section 31. The driving method is not limited and can be a cam drive, linkage drive, lead screw structure, or direct gear transmission, etc., which will not be described in detail here. The transmission path is stable and the response is rapid, ensuring that the positions of multiple second filter sections 31 are synchronized during the switching process, avoiding airflow leakage or reduced purification efficiency due to individual filters not being in place.

[0146] Understandably, the number of driven gears 36 corresponds to the number of second filter sections 31, and their arrangement matches the internal space of the air chamber a. All of the aforementioned gear structures can be made of metal or high-strength plastic to meet durability requirements.

[0147] This specification does not limit the specific arrangement, tooth profile, or material of the drive gear 35 and driven gear 36, as long as it enables one drive gear 35 to drive multiple driven gears 36 to rotate synchronously. For example, the drive gear 35 can be in the form of an external gear or an internal gear ring, with the driven gears 36 distributed around or meshing inside it. The specific structure can be selected according to actual needs and is not limited here.

[0148] By setting up a linkage mechanism consisting of a transmission gear 35 and multiple driven gears 36, the synchronous rotation of multiple second filter units 31 is achieved, ensuring reliable operation and a compact structure. Without requiring an additional switching component 40 to control the air intake path, the purification mode can be flexibly switched simply by adjusting the state of the second filter structure 30. This reduces air resistance while enhancing the treatment capacity of target pollutants, meeting the purification needs of different application scenarios.

[0149] In this embodiment, the specific structure of the air handling device 100 includes at least one or more specific embodiments of the first embodiment of this utility model, which will not be described in detail here.

[0150] Please refer to the fourth embodiment provided in this utility model. Figure 11 and Figure 12The air handling unit 100 includes a main body 10, a first filter structure 20, and a second filter structure 30. The main body 10 has an air cavity a, and a third air inlet a3 and an air outlet a4 communicating with the air cavity a. The first filter structure 20 includes a movably disposed first filter section 21. The first filter section 21 has a first working position located at the third air inlet a3 and a first clearance position at least partially offset from the third air inlet a3 during its active stroke. In the first working position, airflow enters the air cavity a from the third air inlet a3 through the first filter section 21. In the first clearance position, airflow can bypass the first filter section 21 and flow into the air cavity a through the third air inlet a3. The second filter structure 30 is disposed in the air cavity a. The second filter structure 30 includes at least one second filter section 31. The second filter section 31 is movably disposed so that the second filter structure 30 has a working state and a bypass state. In the working state, the second filter section 31 is located on the airflow path to purify the airflow. In the bypass state, the second filter section 31 is moved to a second clearance position so that the airflow can bypass the second filter section 31 and flow to the air outlet a4.

[0151] In this embodiment, the main body 10 is provided with an air cavity a, which connects the third air inlet a3 and the air outlet a4 to form a basic airflow channel. The third air inlet a3 is used to introduce external air and can be located on the periphery or end of the main body 10. The air outlet a4 is located at the top or one axial end of the main body 10 to discharge purified air. The internal space of the air cavity a is used to accommodate the filter structure and guide the airflow.

[0152] Unlike the embodiments described above, in this embodiment, the first filter structure 20 includes a movable first filter section 21, which is not fixedly installed but can move within a preset stroke. The first filter section 21 has two main positions during its movement: a first working position and a first clearance position.

[0153] When in the first working position, the first filter section 21 is located at the third air inlet a3. The airflow must pass through its filter material to enter the air cavity a, thereby purifying particulate matter or gaseous pollutants.

[0154] When moved to the first clearance position, the first filter section 21 is at least partially offset from the third air inlet a3, no longer completely covering the air inlet. The airflow can directly enter the air cavity a through the unobstructed area, bypassing the first filter section 21, thereby avoiding the wind resistance it brings.

[0155] It should be noted that the first filter unit 21 can move in a linear sliding, rotating, or lifting manner, and the specific movement trajectory is determined according to the internal layout of the device. This specification does not limit the specific structure of the drive device; it can be a cam shaft drive, a linkage drive, a lead screw structure, etc., or it can drive the first filter unit 21 by a gear and rack driving the shielding part 41 as in the first embodiment. These will not be described in detail here.

[0156] The first filtration section 21 can use a HEPA filter to remove particulate matter such as PM2.5, or it can use filter media containing a catalyst to decompose formaldehyde, depending on the purification requirements. Its shape is adapted to the flow cross-section of the third air inlet a3 to ensure that there is virtually no bypass leakage in the first operating position.

[0157] The structure and operation of the second filter structure 30 can be referred to the foregoing embodiments, and will not be described in detail here.

[0158] The states of the first filter section 21 and the second filter section 31 can be controlled independently or adjusted in conjunction. For example, when it is necessary to enhance the purification capacity of the second filter section 31, the first filter section 21 is moved to the first clearance position, so that the airflow bypasses the first filter section 21 and concentrates through the second filter section 31; when it is necessary to purify particulate matter and gaseous pollutants at the same time, the first filter section 21 is placed in the first working position, and the second filter section 31 is switched to the working state to achieve composite purification.

[0159] By making the first filter section 21 a movable structure, it can perform both filtering and opening / closing the third air inlet a3, eliminating the need for the separate shielding section 41 and switch assembly 40 as in the previous embodiment, simplifying the overall structure and reducing the number of moving parts. In different purification modes, by adjusting the positions of the first filter section 21 and the second filter section 31, the airflow path and the filter combination involved in purification can be flexibly controlled, reducing ineffective air resistance and improving the removal efficiency of target pollutants.

[0160] In this embodiment, the specific structure of the air handling device 100 includes at least one or more specific embodiments of the first embodiment of this utility model, which will not be described in detail here.

[0161] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An air handling device (100), characterized in that, include: The main body (10) has a wind cavity (a), and a first air inlet (a1), a second air inlet (a2) and an air outlet (a4) communicating with the wind cavity (a); The first filter structure (20) includes a first filter section (21) disposed at the first air inlet (a1) to purify the airflow flowing in from the first air inlet (a1); A second filter structure (30) is disposed within the air cavity (a). The second filter structure (30) includes at least one second filter section (31), which is movably disposed such that the second filter structure (30) has a working state and a bypass state. In the working state, the second filter section (31) is located in the airflow path to purify the airflow. In the bypass state, the second filter section (31) is moved to a clearance position so that the airflow can bypass the second filter section (31) and flow to the air outlet (a4); and, The switch assembly (40) includes a movably disposed shield (41) for opening / closing the second air inlet (a2) during its active stroke.

2. The air handling equipment (100) as described in claim 1, characterized in that, The second filter structure (30) further includes a mounting bracket (32) having a mounting port (32a); The second filter section (31) is rotatably mounted on the mounting bracket (32) about a rotation axis extending along the axial direction of the main body (10), and is provided corresponding to the mounting port (32a); In the operating state, the second filter section (31) is embedded in the mounting port (32a); In the bypass state, the second filter (31) rotates relative to the mounting bracket (32) to define an air gap for airflow between the second filter (31) and the mounting bracket (32).

3. The air handling equipment (100) as described in claim 2, characterized in that, The mounting frame (32) is arranged in a ring shape, and multiple mounting ports (32a) are provided, with the multiple mounting ports (32a) arranged at intervals along the circumference of the mounting frame (32); Multiple second filter sections (31) are provided, and each second filter section (31) is installed in the corresponding mounting port (32a).

4. The air handling equipment (100) as described in claim 3, characterized in that, The second filter structure (30) further includes: A first drive motor (33) is mounted on the mounting bracket (32); and, The linkage mechanism is connected to the first drive motor (33) and the plurality of second filter sections (31) so that the plurality of second filter sections (31) rotate synchronously.

5. The air handling equipment (100) as described in claim 4, characterized in that, The linkage mechanism includes: The drive gear (34) is coaxially connected to the rotating shaft of the first drive motor (33); A transmission gear (35) is rotatably mounted on the main body (10), and the transmission gear (35) meshes with the drive gear (34); and, Multiple driven gears (36) are arranged at intervals along the circumference of the transmission gear (35). Each driven gear (36) meshes with the transmission gear (35) and is coaxially connected to the corresponding second filter section (31) to drive the corresponding second filter section (31) to rotate.

6. The air handling equipment (100) as described in claim 5, characterized in that, An angle limiting mechanism is provided between the transmission gear (35) and the main body (10), and the angle limiting mechanism is used to limit the rotation angle of the transmission gear (35).

7. The air handling equipment (100) as claimed in claim 6, characterized in that, The angle limiting mechanism includes a limiting groove (35a) disposed on one of the transmission gear (35) and the main body (10), and a limiting mating part (11) disposed on the other. The limiting groove (35a) extends circumferentially along the transmission gear (35), and the limiting mating part (11) passes through the limiting groove (35a). When the transmission gear (35) rotates, the limiting mating part (11) abuts against both ends of the limiting groove (35a) to limit the rotation angle of the transmission gear (35) within a preset range.

8. The air handling equipment (100) as claimed in claim 1, characterized in that, The shielding part (41) is movably disposed along the axial direction of the main body (10); The switching assembly (40) further includes: The first rack (42) extends along the axial direction of the main body (10) and is fixedly connected to the shielding part (41); A first drive gear (43) meshes with the first rack (42), and the first drive gear (43) is rotatably configured to drive the first rack (42) to move the blocking part (41); and, The second drive motor (44) drives the first drive gear (43) to rotate.

9. The air handling equipment (100) as claimed in claim 8, characterized in that, The shielding part (41) is arranged in a ring shape; Two first racks (42) are provided, and the two first racks (42) are fixedly connected to the two radial sides of the shielding part (41); The switch assembly (40) further includes a transmission part (45), which includes a transmission rod (451) extending radially along the body (10) and two intermediate gears (452) disposed at both ends of the transmission rod (451). The transmission rod (451) is rotatably mounted on the body (10) about its axis, and the two intermediate gears (452) mesh with the two first racks (42) respectively.

10. The air handling apparatus (100) as claimed in claim 8, characterized in that, The switch assembly (40) further includes a guide structure (50) disposed between the shielding part (41) and the main body (10). The guide structure (50) includes a guide hole (51) disposed in one of the main body (10) and the shielding part (41) and a guide post (52) disposed in the other. The guide post (52) extends along the axial direction of the main body (10) and passes through the guide hole (51) to slide with the guide hole (51).

11. The air handling equipment (100) as claimed in claim 1, characterized in that, The main body (10) is provided with a storage groove (10a), the opening of the storage groove (10a) faces the second air inlet (a2), and the shielding part (41) is movably provided along the depth direction of the storage groove (10a) to shield the second air inlet (a2) when moving out of the storage groove (10a).

12. The air handling equipment (100) as claimed in claim 1, characterized in that, The second air inlet (a2) is located at the center of the main body (10) in its axial direction.

13. An air handling device (100), characterized in that, include: The main body (10) has a wind cavity (a), and a first air inlet (a1), a second air inlet (a2) and an air outlet (a4) communicating with the wind cavity (a); The filter structure includes a first filter structure (20) and a second filter structure (30) arranged in a ring. The first filter structure (20) is arranged around the periphery of the second filter structure (30). The first filter structure (20) includes a first filter section (21) disposed at the first air inlet (a1). The second filter structure (30) is disposed within the air cavity (a). The second filter structure (30) includes at least one second filter section (31). The second filter section (31) is movably disposed such that the second filter structure (30) has a working state and a bypass state. In the working state, the second filter section (31) is located on the airflow path to purify the airflow. In the bypass state, the second filter section (31) is moved to a clearance position so that the airflow can bypass the second filter section (31) and flow to the air outlet (a4). The switch assembly (40) includes a movably disposed shield (41) for opening / closing the second air inlet (a2) during its active stroke.

14. An air handling device (100), characterized in that, include: The main body (10) has a wind cavity (a), and a first air inlet (a1), a second air inlet (a2) and an air outlet (a4) communicating with the wind cavity (a); The first filter structure (20) includes a first filter section (21) disposed at the first air inlet (a1) to purify the airflow flowing in from the first air inlet (a1); A second filter structure (30) is disposed in the air cavity (a). The second filter structure (30) includes a plurality of second filter sections (31). Each second filter section (31) is rotatably disposed so that the second filter structure (30) has a working state and a bypass state. In the working state, the plurality of second filter sections (31) are located on the airflow path to purify the airflow. In the bypass state, the plurality of second filter sections (31) are moved to a clearance position so that the airflow can bypass the second filter section (31) and flow to the air outlet (a4). as well as, The linkage mechanism includes a rotatable transmission gear (35) and a plurality of driven gears (36). Each driven gear (36) meshes with the transmission gear (35), and each driven gear (36) is coaxially connected to the corresponding second filter section (31) to drive the corresponding second filter section (31) to rotate.

15. An air handling device (100), characterized in that, include: The main body (10) has a wind cavity (a), and a third air inlet (a3) ​​and an air outlet (a4) communicating with the wind cavity (a); A first filter structure (20) includes a movably disposed first filter section (21), which has a first working position located at the third air inlet (a3) ​​and a first clearance position at least partially offset from the third air inlet (a3) ​​during its active stroke. In the first working position, airflow enters the air cavity (a) from the third air inlet (a3) ​​through the first filter section (21). In the first clearance position, airflow can bypass the first filter section (21) and flow into the air cavity (a) through the third air inlet (a3); and, A second filter structure (30) is disposed within the air cavity (a). The second filter structure (30) includes at least one second filter section (31). The second filter section (31) is movably disposed such that the second filter structure (30) has a working state and a bypass state. In the working state, the second filter section (31) is located on the airflow path to purify the airflow. In the bypass state, the second filter section (31) is moved to a second clearance position so that the airflow can bypass the second filter section (31) and flow to the air outlet (a4).

16. The air handling apparatus (100) according to any one of claims 1 to 15, characterized in that, The air handling equipment (100) includes an air purifier.

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