Switchable air supply structure and air conditioner

Abstract

The application provides a switchable air supply structure and an air conditioner. The switchable air supply structure comprises a body and an air supply device. The body comprises a first air outlet and a second air outlet. The air supply device comprises an inlet, a first outlet and a second outlet. A side air duct is arranged in the body and is communicated between the first air outlet and the inlet and between the second air outlet and the inlet. The air supply device further comprises a first baffle capable of opening and closing the first outlet, a second baffle capable of opening and closing the second outlet, a first filter screen assembly and a second filter screen assembly. The first filter screen assembly is arranged between the first air outlet and the inlet, and the second filter screen assembly is arranged between the second air outlet and the inlet. The air conditioner comprises the switchable air supply structure. In both air supply states of upper air inlet and lower air outlet or lower air inlet and lower air outlet, the application can filter impurities in the air inlet, thereby improving user experience and indoor environmental quality.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, specifically to a switchable air supply structure and an air conditioner. Background Technology

[0002] Most existing cabinet air conditioners have filters at the air inlet to prevent dust from the outside air from entering the evaporator and internal cavity, thus avoiding performance degradation and indoor air quality decline caused by dust accumulation. However, as the usage time increases, the dust accumulated on the filter surface will gradually block the airflow channel, causing a decrease in air intake, which in turn leads to problems such as reduced cooling / heating efficiency and deterioration of air quality. Regular disassembly and cleaning are necessary to maintain the equipment's operating efficiency.

[0003] A type of cabinet air conditioner with reversible airflow direction is available. This air conditioner includes an air supply device housed within the unit, comprising a volute and a centrifugal fan. The volute has an inlet located on one side of the fan's axial direction, and a first outlet and a second outlet located at different positions on the outer periphery of the fan. A first air vent and a second air vent are respectively located at the upper and lower parts of the air conditioner. A first air duct is provided within the unit, connecting the first outlet and the first air vent; a second air duct is provided within the unit, connecting the second outlet and the second air vent; and a side air duct is provided within the unit, axially upward, located outside the volute, connecting the first air vent and the inlet, and also connecting the second air vent and the inlet.

[0004] The air supply device also includes a first baffle that can be opened and closed at the first opening, and a second baffle that can be opened and closed at the second opening. By controlling the switching of the opening and closing of the first baffle and the second baffle, the two air supply states of top air intake and bottom air exhaust or bottom air intake and bottom air exhaust can be switched.

[0005] However, the air inlet structure of this type of air conditioner with switchable air intake and exhaust has a unique feature—its air inlets are located at the top and bottom of the unit, and there is no traditional air inlet or air intake grille structure on the rear of the entire unit. This design makes it impossible to directly install conventional filter devices, causing external dust to easily enter the internal cavity through the top and bottom air inlets during air conditioner operation, resulting in potential problems such as casing contamination and evaporator dust accumulation. Long-term operation may lead to issues such as unpleasant odors in the exhaust and decreased air cleanliness, seriously affecting user experience and indoor environmental quality. Utility Model Content

[0006] The primary objective of this invention is to provide a switchable air supply structure that can effectively filter incoming air from both air supply directions.

[0007] The second objective of this invention is to provide an air conditioner that can effectively filter incoming air in both air supply directions.

[0008] The switchable air supply structure provided by this utility model, with its primary objective, includes a body and an air supply device. The body includes a first air outlet and a second air outlet. The air supply device includes a volute and a centrifugal fan. The volute includes an inlet located on its axial side and a first outlet and a second outlet located at different positions on its circumferential side. The centrifugal fan is disposed within the volute. A first air duct is provided within the body, connecting the first outlet and the first air outlet. A second air duct is provided within the body, connecting the second outlet and the second air outlet. A side air duct is provided within the body, located on the outer side of the volute along the axial direction of the centrifugal fan, and connecting the first air outlet and the inlet. Between the inlets and outlets, a side air duct connects the second air outlet and the inlet; the air supply device also includes a first baffle that can open and close the first outlet, and a second baffle that can open and close the second outlet; it also includes a first filter assembly and a second filter assembly disposed within the machine body; a first air inlet position is provided within the machine body, the first air inlet position is located between the first air outlet and the inlet, and the first air inlet position is located outside the first air duct, and the first filter assembly is disposed at the first air inlet position; a second air inlet position is provided within the machine body, the second air inlet position is located between the second air outlet and the inlet, and the second air inlet position is located outside the second air duct, and the second filter assembly is disposed at the second air inlet position.

[0009] As can be seen from the above scheme, when the air conditioner is in heating / cooling mode, the lower second air vent serves as the air inlet, and the upper first air vent serves as the air outlet. At this time, the first baffle on the upper side of the volute is opened, and the lower second baffle on the lower side of the volute is closed. After air enters the air conditioning system through the lower second air vent, it first reaches the second air duct. Due to the second baffle blocking the air, it cannot enter the volute from the second outlet. The airflow then passes through the lower second filter assembly and reaches the side air duct, then sequentially passes through the volute inlet, centrifugal fan, the upper first outlet of the volute, and the first air duct, finally blowing cold air out from the upper first air vent. At this time, the lower second filter assembly filters the incoming air. Conversely, when the air conditioner is in heating mode, the upper first air vent serves as the air inlet, and the lower second air vent serves as the air outlet. At this time, the upper first baffle on the volute is closed, and the lower second baffle on the lower side of the volute is opened. After air enters the air conditioning system through the first air vent at the top, it first reaches the first air duct. Due to the first baffle blocking the airflow, it cannot enter the volute from the first outlet. The airflow then passes through the first filter assembly at the top and reaches the side air duct. It then sequentially passes through the inlet of the volute, the centrifugal fan, the second outlet on the lower side of the volute, and the second air duct, finally blowing warm air out from the second air vent at the bottom. At this point, the first filter assembly at the top filters the incoming air. Therefore, regardless of whether the air supply is in either the top-intake / bottom-out or bottom-intake / bottom-out mode, impurities in the incoming air can be filtered, improving user experience and indoor environmental quality.

[0010] A further embodiment is that the first filter assembly and / or the second filter assembly are switchable filter assemblies; the switchable filter assembly includes a rotary drive unit, a rotary bracket, and two filter elements, the rotary drive unit drives the rotary bracket to rotate, and the two filter elements are mounted on the rotary bracket and located at different positions in the circumferential direction of the rotary bracket; the body is also provided with a first standby position, in which the two filter elements in the first filter assembly can be switched between a first air inlet position and a first standby position under the drive of the rotary drive unit; the body is also provided with a second standby position, in which the two filter elements in the second filter assembly can be switched between a second air inlet position and a second standby position under the drive of the rotary drive unit.

[0011] As can be seen from the above, under this setting, each filter assembly includes a filter that is in use and a spare filter. When it is determined by weight detection or other detection that the filter in use has accumulated a lot of dust, the spare filter can be rotated to switch to filter, thereby effectively and continuously ensuring the filtration effect.

[0012] A further proposed solution is that the first air intake position and the first standby position are arranged along the height direction of the fuselage; and / or, the second air intake position and the second standby position are arranged along the height direction of the fuselage.

[0013] Another further solution is to have two filter elements in a switchable filter assembly that are coplanar and whose plane is perpendicular to the rotation axis of the rotating bracket.

[0014] As can be seen from the above, this setting ensures that when the rotating bracket rotates, the two filter screens rotate on the same plane, reducing the space occupied inside the machine.

[0015] Another further solution is that the switchable filter assembly also includes a cleaning component, which is located in the circumferential position of the rotating bracket. During the rotation of the rotating bracket, the cleaning component contacts the two filter components one after the other.

[0016] Furthermore, the cleaning components utilize cross-cleaning brushes.

[0017] As shown above, cleaning components such as cleaning brushes and filter weight measurements monitor the amount of dust adhering to the surface in real time. When a significant amount of dust accumulation is detected, the rotating bracket activates, switching the filter between two positions. During this switching process, the cross-cleaning brushes located in the standby area simultaneously clean the filter surface. The installation position of these cleaning brushes is aligned with the filter's movement path, ensuring full contact between the filter and the brushes when the filter rotates to the standby area, achieving efficient cleaning.

[0018] Another further option is that the machine body is provided with a first disassembly port, in which the filter element of the first filter assembly can be disassembled from the rotating bracket and exited from the machine body through the first disassembly port; and / or, the machine body is provided with a second disassembly port, in which the filter element of the second filter assembly can be disassembled from the rotating bracket and exited from the machine body through the second disassembly port.

[0019] As can be seen from the above, this setting enables the removable and replaceable filter elements in the switchable filter assembly.

[0020] A further alternative is that the plane containing the first filter assembly is perpendicular to the axial direction, and / or the plane containing the second filter assembly is perpendicular to the axial direction.

[0021] As can be seen from the above, since the airflow will flow axially from the inlet to the side air duct, the space inside the machine is limited. The plane where the filter assembly is located is at an angle to the axis. More preferably, the plane where the filter assembly is located is perpendicular to the axis. This ensures that the air entering from the inlet is filtered, and also ensures that the filter assembly occupies less axial dimension, avoiding occupying the position of the first or second air duct and affecting its ventilation performance.

[0022] Another further design is to have an inlet on each of the two axial sides of the volute, and to form a side air duct on each of the two outer sides of the volute. Two first filter assemblies are respectively installed on the two axial sides of the first air duct, and two second filter assemblies are respectively installed on the two axial sides of the second air duct.

[0023] As can be seen above, the centrifugal fan draws air from both sides of the axis. This setting increases the airflow and improves the cooling / heating efficiency, while ensuring that the air intake from both sides is effectively filtered.

[0024] The second objective of this utility model is to provide an air conditioner that includes the aforementioned switchable air supply structure. Attached Figure Description

[0025] Figure 1 This is a first-view cross-sectional view of an embodiment of the air conditioner of this utility model.

[0026] Figure 2 This is a cross-sectional view from a second perspective of an embodiment of the air conditioner of this utility model.

[0027] Figure 3 This is a structural diagram of the switchable filter assembly in an embodiment of the air conditioner of this utility model.

[0028] Figure 4 This is an exploded view of the switchable filter assembly in an embodiment of the air conditioner of this utility model.

[0029] Figure 5 This is a schematic diagram of the unit body in an embodiment of the air conditioner of this utility model.

[0030] Figure 6This is a cross-sectional view from the first perspective of the first air supply state of the air conditioner embodiment of this utility model.

[0031] Figure 7 This is a cross-sectional view from a second perspective of the first air supply state of the air conditioner embodiment of this utility model.

[0032] Figure 8 This is a cross-sectional view from the first perspective of the second air supply state of the air conditioner embodiment of this utility model.

[0033] Figure 9 This is a cross-sectional view from a second perspective in the second air supply state of an embodiment of the air conditioner of this utility model. Detailed Implementation

[0034] Switchable air supply structure and air conditioner implementation examples See Figure 1 and Figure 2 The air conditioner of the present invention includes an indoor unit, which is a cabinet unit, and the cabinet unit includes the switchable air supply structure of the present invention. The switchable air supply structure includes a body 1, an air supply device 2 disposed in the body 1, a first filter assembly 3, and a second filter assembly 4.

[0035] The air supply device 2 includes a volute 21 and a centrifugal fan 22. The volute 21 includes an inlet 213 located on its axial side and a first outlet 211 and a second outlet 212 located at different positions on its circumference. The centrifugal fan 22 is disposed inside the volute 21.

[0036] In this embodiment, the centrifugal fan 22 is an axial bidirectional suction fan. Correspondingly, two inlets 213 are respectively provided on both sides of the axial direction of the volute 21. The airflow entering from the inlet 213 reaches the suction side of the centrifugal fan 22, and the airflow discharged from the outer periphery of the centrifugal fan 22 can be sent out through the first outlet 211 or the second outlet 212.

[0037] In this embodiment, the first outlet 211 and the second outlet 212 are located on the upper and lower sides of the volute 21, respectively. See also... Figure 6 and Figure 8 The air supply device 2 also includes a first baffle 61 that can open and close the first outlet 211, and a second baffle 62 that can open and close the second outlet 212.

[0038] See also Figure 1 and Figure 2The body 1 includes a first air vent 101 and a second air vent 102. In this embodiment, the first air vent 101 is located at the top of the body 1, and the second air vent 102 is located at the front of the lower part of the body 1. A first air duct 103 is provided inside the body 1, vertically connecting the first outlet 211 of the volute 22 and the first air vent 101 at the top of the body 1. A second air duct 104 is also provided inside the body 1, connecting the second outlet 212 of the volute 22 and the second air vent 102 at the lower part of the body 1.

[0039] In addition, a side air duct 105 is provided inside the body 1. Specifically, the axial direction of the centrifugal fan 22 ( Figure 1 In the left-right direction shown, two side air ducts 105 are located on the outer sides of opposite sides of the volute 21. Both side air ducts 105 are connected between the first air outlet 101 and the corresponding side inlet 213. Both side air ducts 105 are connected between the second air outlet 102 and the corresponding side inlet 213.

[0040] A first air inlet position 301 is provided inside the body 1. The first air inlet position 301 is located between the first air outlet 101 and the inlet 213, and is located outside the first air duct 103. The first filter assembly 3 is provided at the first air inlet position 301. A second air inlet position 401 is provided inside the body 1. The second air inlet position 401 is located between the second air outlet 102 and the inlet 213, and is located outside the second air duct 104. The second filter assembly 4 is provided at the second air inlet position 401.

[0041] See Figure 3 and Figure 4 The first filter assembly 3 and the second filter assembly 4 are switchable filter assemblies. Taking the first filter assembly 3 as an example, the switchable filter assembly includes a rotary drive unit 31, a rotary bracket 32, two filter elements 33, a cleaning element 34, a drive gear 38, and a driven gear 39.

[0042] The rotary drive unit 31 is a motor, and the driving gear 38 is connected to the output shaft of the rotary drive unit 31. The driven gear 39 is connected to the rotation axis 320 of the drive rotating bracket 32. The rotary drive unit 31 is fixed inside the body 1. The driving gear 38 meshes with the driven gear 39. When the rotary drive unit 31 is working, it can drive the rotating bracket 32 ​​to rotate around the rotation axis 320.

[0043] Two filter elements 33 are mounted on the rotating bracket 32 ​​and are located at different positions around the circumference of the rotating bracket 32. Furthermore, the two filter elements 33 in a switchable filter assembly are coplanar, and their planes are perpendicular to the rotation axis of the rotating bracket 32. This configuration ensures that when the rotating bracket 32 ​​rotates, the two filter elements 33 rotate on a single plane, reducing the space occupied within the machine.

[0044] See also Figure 1 and Figure 2 The main body 1 is also provided with a first standby position 302. One of the two filters 33 in the first filter assembly 3 is located in the first air inlet position 301 and the other is located in the second standby position 302. Under the drive of the rotary drive unit 31, the two filter components 33 can be swapped between the first air inlet position 301 and the first standby position 302. In this configuration, each filter assembly includes one filter in use and one spare filter. When it is determined by weight detection or other detection that the filter in use has accumulated a lot of dust, the spare filter can be rotated to perform filtration, thereby effectively and continuously ensuring the filtration effect.

[0045] Furthermore, in this embodiment, the cleaning component 34 is a brush. The cleaning component 34 is fixedly disposed within the body 1, located circumferentially on the rotating bracket 32 ​​and close to the first standby position 302 to avoid interfering with the filter element currently in operation. The cleaning component 34 contacts the filter surface of the filter element 33. During the rotation of the rotating bracket 32, the cleaning component contacts both filter elements 33 sequentially. A more preferred solution is that the brush has cross-shaped cleaning bristles. The cross-shaped bristles, arranged in different directions, cover the blind spots on the filter surface, avoiding cleaning dead angles.

[0046] Similarly, the body 1 is also provided with a second standby position 402. One of the two filters in the second filter assembly 4 is located in the second air inlet position 401 and the other is located in the second standby position 402. Under the drive of the rotary drive unit, the two filter elements can be swapped between the second air inlet position 401 and the second standby position 402. Likewise, the cleaning element in the second filter assembly 4 is a brush. The cleaning element is fixedly installed inside the body 1, located in the circumferential position of the rotating bracket and close to the second standby position 402 to avoid affecting the filter element that is currently working. The cleaning element contacts the filter surface of the filter element. During the rotation of the rotating bracket, the cleaning element contacts the two filter elements successively.

[0047] In addition, since there is an inlet 213 on both sides of the volute 21, the body 1 forms a side air duct 105 on both sides of the volute 21. Two first filter assemblies 3 are respectively arranged on both sides of the first air duct 103, and two second filter assemblies 4 are respectively arranged on both sides of the second air duct 104. The centrifugal fan 22 draws air from both sides of the axial direction. This arrangement can increase the air flow and improve the cooling / heating efficiency, while ensuring that the air intake on both sides can be effectively filtered.

[0048] See also Figure 1 and Figure 2The plane of the first filter assembly 3 forms an angle with the axial direction (left-right direction in the figure) of the centrifugal fan 22, and the plane of the second filter assembly 4 forms an angle with the axial direction. In a further embodiment, this angle is 90 degrees, meaning the plane of the first filter assembly 3 is perpendicular to the axial direction, and the plane of the second filter assembly 4 is also perpendicular to the axial direction. In this embodiment, both the first filter assembly 3 and the second filter assembly 4 are vertically arranged. Furthermore, the first air inlet position 301 and the first standby position 302 are arranged along the height direction of the body 1, and the second air inlet position 401 and the second standby position 402 are also arranged along the height direction of the body. Since the airflow from inlet 213 to side duct 105 will pass through the axial flow, the space inside the body 1 is limited. The plane where the filter assembly is located is at an angle to the axial direction. More preferably, the plane where the filter assembly is located is perpendicular to the axial direction, which ensures that the gas entering from inlet 213 is filtered, and also ensures that the filter assembly occupies less axial (body width direction) dimensions. It can also avoid occupying the space of the first duct 103 or the second duct 104 and affecting its ventilation performance.

[0049] In addition, combined Figure 4 and Figure 5 Both filters 33 can be slidably installed and removed from the rotating bracket 32 ​​along the width direction of the rotating bracket 32. Figure 4 (As shown in the left-right direction). The body 1 is provided with a first disassembly port 300, the inlet and outlet direction of the first disassembly port 300 is consistent with the sliding direction of the filter screen being disassembled and assembled from the rotating bracket. In the first filter screen assembly 3, the filter screen can be detached from the rotating bracket and exited from the body 1 through the first disassembly port 300. Similarly, the body 1 is also provided with a second disassembly port 400, the inlet and outlet direction of the second disassembly port 400 is consistent with the sliding direction of the filter screen being disassembled and assembled from the rotating bracket 32. In the second filter screen assembly 4, the filter screen can be detached from the rotating bracket and exited from the body 1 through the second disassembly port 400. Similarly, the installation of the filter screen is the opposite action, which will not be described in detail.

[0050] See Figure 6 and Figure 7 When the air conditioner is in heating / cooling mode, the lower second air vent 102 serves as the air inlet, and the upper first air vent 101 serves as the air outlet. At this time, the first baffle 61 on the upper side of the volute 21 is opened, and the second baffle on the lower side of the volute is closed. After air enters the air conditioning system through the lower second air vent 102, it first reaches the second air duct 104. Due to the second baffle 62 blocking the air, it cannot enter the volute 21 from the second outlet 212. The airflow then passes through the lower second filter assembly 4 and reaches the side air duct 105, then sequentially passes through the inlet 213 of the volute 21, the centrifugal fan 22, the first outlet 211 on the upper side of the volute 21, and the first air duct 103. Finally, cold air is blown out from the upper first air vent 101. At this time, the lower second filter assembly 4 filters the incoming air.

[0051] See Figure 8 and Figure 9 When the air conditioner is in heating mode, the upper first air vent 101 serves as the air inlet, and the lower second air vent 102 serves as the air outlet. At this time, the upper first baffle 61 of the volute 21 is closed, and the lower second baffle 62 of the volute 21 is opened. After air enters the air conditioning system through the upper first air vent 101, it first reaches the first air duct 103. Due to the obstruction of the first baffle 61, the air cannot enter the volute 21 from the first outlet 211. The airflow then passes through the upper first filter assembly 3 and reaches the side air duct 105, then sequentially passes through the inlet 213 of the volute 21, the centrifugal fan 22, the lower second outlet 212 of the volute 21, and the second air duct 104, finally blowing warm air out from the lower second air vent 102. At this time, the upper first filter assembly 3 filters the incoming air. It can be seen that regardless of whether the air supply is in the upper intake and lower outlet or lower intake and lower outlet state, impurities in the incoming air can be filtered, improving user experience and indoor environmental quality.

[0052] More importantly, the rotary dual-station filter system solves the problem of frequent manual cleaning required by traditional filters through its automatic filter switching function, significantly reducing maintenance costs and operational complexity. The dual-station design, with its filtration and standby positions, ensures that the filter maintains continuous filtration function during cleaning, avoiding airflow interruptions caused by cleaning and guaranteeing the continuity and stability of air conditioning operation.

[0053] Furthermore, the cleaning component employs cross-shaped cleaning brushes that effectively remove adhering dust particles by contacting the filter surface at multiple angles, significantly improving cleaning efficiency. Its structural design adapts to the filter's movement path, enabling automated cleaning and reducing the need for manual intervention.

[0054] Finally, it should be emphasized that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Switchable air supply structure, including the body and air supply device; The body includes a first air inlet and a second air inlet; The air supply device includes a volute and a centrifugal fan. The volute includes an inlet located on its axial side and a first outlet and a second outlet located at different positions in its circumferential direction. The centrifugal fan is disposed inside the volute. The machine body is provided with a first air duct, which connects the first outlet and the first air vent. The machine body is provided with a second air duct, which connects the second outlet and the second air inlet; The machine body is provided with a side air duct. Along the axial direction of the centrifugal fan, the side air duct is located outside the volute. The side air duct connects the first air outlet and the inlet, and the side air duct also connects the second air outlet and the inlet. The air supply device also includes a first baffle that can open and close the first outlet, and a second baffle that can open and close the second outlet; Its features are: It also includes a first filter assembly and a second filter assembly disposed within the body of the machine; The machine body is provided with a first air inlet position, which is located between the first air outlet and the inlet, and the first air inlet position is located outside the first air duct. The first filter assembly is provided at the first air inlet position. The machine body is provided with a second air inlet position, which is located between the second air outlet and the inlet, and is located outside the second air duct. The second filter assembly is disposed at the second air inlet position.

2. The switchable air supply structure according to claim 1, characterized in that: The first filter assembly and / or the second filter assembly are switchable filter assemblies; The switchable filter assembly includes a rotary drive unit, a rotary bracket, and two filter elements. The rotary drive unit drives the rotary bracket to rotate, and the two filter elements are installed on the rotary bracket and are located at different positions in the circumferential direction of the rotary bracket. The body is also provided with a first standby position. In the first filter assembly, under the drive of the rotary drive unit, the two filter elements can switch positions between the first air inlet position and the first standby position. The machine body is also provided with a second standby position. In the second filter assembly, under the drive of the rotary drive unit, the two filter elements can switch positions between the second air inlet position and the second standby position.

3. The switchable air supply structure according to claim 2, characterized in that: The switchable filter assembly also includes a cleaning component, which is disposed in the circumferential position of the rotating bracket. During the rotation of the rotating bracket, the cleaning component cleans the two filter components.

4. The switchable air supply structure according to claim 3, characterized in that: The cleaning component includes a cross-cleaning brush.

5. The switchable air supply structure according to claim 2, characterized in that: The machine body is provided with a first disassembly port, and in the first filter assembly, the filter element can be disassembled from the rotating bracket and exited from the machine body through the first disassembly port; And / or, The machine body is provided with a second disassembly port. In the second filter assembly, the filter element can be disassembled from the rotating bracket and exited from the machine body through the second disassembly port.

6. The switchable air supply structure according to claim 2, characterized in that: The first air intake position and the first standby position are arranged along the height direction of the body; And / or, the second air intake position and the second standby position are arranged along the height direction of the body.

7. The switchable air supply structure according to claim 2, characterized in that: Two of the filter elements in one of the switchable filter assemblies are coplanar and their planes are perpendicular to the rotation axis of the rotating bracket.

8. The switchable air supply structure according to any one of claims 1 to 7, characterized in that: The plane containing the first filter assembly is perpendicular to the axial direction, and / or the plane containing the second filter assembly is perpendicular to the axial direction.

9. The switchable air supply structure according to any one of claims 1 to 7, characterized in that: An inlet is provided on both sides of the axial direction of the volute, and a side air duct is formed on both outer sides of the volute in the axial direction of the body. Two first filter assemblies are respectively arranged on both sides of the first air duct along its axial direction, and two second filter assemblies are respectively arranged on both sides of the second air duct along its axial direction.

10. An air conditioner, characterized in that, Includes the switchable air supply structure described in any one of claims 1 to 9.

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