Air duct switching device, air duct assembly and air conditioner

Abstract

The present disclosure relates to an air duct switching device, an air duct assembly and an air conditioner. The air duct switching device comprises a first cylinder and a second cylinder. The first cylinder is provided with a first mounting port, a first opening and a second opening. The second cylinder is provided with a second mounting port, a third opening and a fourth opening. The second mounting port is arranged corresponding to the first mounting port. The first cylinder is sleeved outside the second cylinder and can rotate relative to the second cylinder around a rotation axis, so that the air duct switching device switches between a first state and a second state. In the first state, the first opening communicates with the third opening, and the second opening is staggered with the fourth opening. In the second state, the second opening communicates with the fourth opening, and the first opening is staggered with the third opening. The air duct assembly of the present disclosure has the advantages of simple structure and small volume.

Description

Technical Field

[0001] This disclosure relates to the field of air conditioning equipment technology, specifically to an air duct switching device, an air duct assembly, and an air conditioner. Background Technology

[0002] As people's living standards improve, their requirements for indoor air quality are increasing. Air conditioners often combine the functions of three major devices: air conditioning, fresh air systems, and humidifiers. Specifically, an air conditioner includes an air conditioning module, a fresh air module, and a humidification module, which can respectively regulate indoor air temperature, cleanliness, and humidity. In related technologies, the air conditioning module, fresh air module, and humidification module of an air conditioner are set up independently. Each module requires an independent air duct design, and each air duct requires an independent fan. This results in complex structures and large volumes in the air duct components of air conditioners, making it difficult to meet people's increasingly stringent requirements for air conditioners. Summary of the Invention

[0003] This disclosure aims to at least partially address one of the technical problems in the related art.

[0004] Therefore, embodiments of this disclosure propose an air duct switching device to simplify the structure of the air duct assembly and reduce its volume.

[0005] The air duct switching device of this embodiment includes a first cylinder and a second cylinder. The first cylinder has a first mounting port, a first opening, and a second opening. The second cylinder has a second mounting port, a third opening, and a fourth opening, with the second mounting port corresponding to the first mounting port. The first cylinder is sleeved on the outside of the second cylinder and can rotate relative to the second cylinder about a rotation axis, so that the air duct switching device can switch between a first state and a second state. In the first state, the first opening is connected to the third opening, and the second opening is offset from the fourth opening. In the second state, the second opening is connected to the fourth opening, and the first opening is offset from the third opening.

[0006] In some embodiments, the extending directions of the first cylinder and the second cylinder are both consistent with the extending direction of the rotation axis; the first opening of the first cylinder forms the first mounting port, the second opening of the first cylinder is sealed, and both the first opening and the second opening are provided on the cylinder wall of the first cylinder; the first opening of the second cylinder forms the second mounting port, the second opening of the second cylinder is sealed, and both the third opening and the fourth opening are provided on the cylinder wall of the second cylinder.

[0007] In some embodiments, the first opening is disposed on one side of the second opening in the extending direction of the first cylinder, and the third opening is disposed on one side of the fourth opening in the extending direction of the second cylinder.

[0008] In some embodiments, there are multiple first openings and multiple third openings. In the first state, the first opening and the third opening correspond one-to-one and are connected. There are multiple second openings and multiple fourth openings. In the first state, the second opening and the fourth opening correspond one-to-one and are connected.

[0009] In some embodiments, the first opening is disposed on one side of the second opening in the extending direction of the first cylinder, and the third opening is disposed on one side of the fourth opening in the extending direction of the second cylinder.

[0010] In some embodiments, the first cylinder is a rotating cylinder for rotatably connecting with the duct housing, and the second cylinder is a fixed cylinder for fixedly connecting with the duct housing. A plurality of first openings and a plurality of second openings are alternately arranged circumferentially along the first cylinder, and the arrangement directions of adjacent third openings and fourth openings are parallel to the extension direction of the second cylinder. Alternatively, the second cylinder is a rotating cylinder for rotatably connecting with the duct housing, and the first cylinder is a fixed cylinder for fixedly connecting with the duct housing. A plurality of third openings and a plurality of fourth openings are alternately arranged circumferentially along the second cylinder, and the arrangement directions of adjacent first openings and second openings are parallel to the extension direction of the first cylinder.

[0011] In some embodiments, the number of the first opening and the number of the third opening are both two, with the two first openings and the two third openings arranged opposite each other; the number of the second opening and the number of the fourth opening are both two, with the two second openings and the two fourth openings arranged opposite each other.

[0012] In some embodiments, the second opening of the second cylinder is provided with a sealing plate to seal the second opening of the second cylinder; the fourth opening is disposed closer to the second opening of the second cylinder than the third opening, and the projection of the sealing plate on the projection plane coincides with the projection of the fourth opening on the projection plane, wherein the projection plane is perpendicular to the arrangement direction of the two fourth openings.

[0013] In some embodiments, one of the first cylinder and the second cylinder is a rotating cylinder for rotatably connecting with the duct housing, and the other of the first cylinder and the second cylinder is a fixed cylinder for fixedly connecting with the duct housing; the duct switching device further includes a driving device connected to the rotating cylinder to drive the rotating cylinder to rotate.

[0014] In some embodiments, the driving device includes transmission teeth, a gear, and a driving member. The transmission teeth are disposed on the rotating cylinder; the gear meshes with the transmission teeth; and the driving member is connected to the gear to drive the gear to rotate.

[0015] The air duct assembly of this embodiment includes a fan, an air duct housing, and an air duct switching device. The fan includes a fan housing and an impeller. The fan housing has a fan cavity, and the impeller is rotatably disposed within the fan cavity. The air duct housing is connected to the fan housing and has a first air duct and a second air duct. The air duct switching device is the air duct switching device described in any of the above embodiments. The air duct switching device is disposed between the air duct housing and the fan housing, and both the second mounting port and the first mounting port are connected to the fan cavity. In the first state, the first air duct is connected to the fan cavity through the air duct switching device, and the second air duct is disconnected from the fan cavity through the air duct switching device. In the second state, the second air duct is connected to the fan cavity through the air duct switching device, and the first air duct is disconnected from the fan cavity through the air duct switching device.

[0016] In some embodiments, the first air duct is disposed on both sides of the air duct switching device in a first direction; the second air duct is disposed on both sides of the air duct switching device in the first direction; wherein, the first direction is perpendicular to the extension direction of the rotation axis.

[0017] In some embodiments, the first air duct has a first port and a second port opposite to each other in its extension direction, the first port being closer to the fan than the second port, and the second ports of the first air ducts located on both sides of the air duct switching device having the same orientation; the second air duct has a third port and a fourth port opposite to each other in its extension direction, the third port being closer to the fan than the fourth port, and the fourth ports of the second air ducts located on both sides of the air duct switching device having the same orientation.

[0018] In some embodiments, the duct housing includes a central portion and side portions disposed on both sides of the central portion in a first direction, the central portion extending along the first direction and the side portions extending along a second direction; wherein, the first cylinder is movably connected to the central portion, the central portion and the side portions forming the first duct and the second duct, and the second direction is perpendicular to the extension direction of the rotation axis and the first direction.

[0019] In some embodiments, the side portions protrude beyond the middle portion along the second direction, and the middle portion and the side portions disposed on both sides of the middle portion form an installation space; one of the first air duct and the second air duct is a humidifying air duct, and the air duct assembly further includes a humidifying component, the humidifying component is connected to the air duct housing, the humidifying component includes a wet film, a receiving member and a water tank, the wet film is disposed in the humidifying air duct, and a portion of the wet film extends into the receiving member, the water tank communicates with the receiving member to supply water to the receiving member; wherein at least a portion of the receiving member and the water tank are disposed within the installation space.

[0020] In some embodiments, the first air duct is an air outlet duct, the second air duct is a humidification duct, and the second air duct is set lower than the first air duct.

[0021] An air conditioner is also proposed in the embodiments of this disclosure.

[0022] The air conditioner in this disclosure includes the air duct switching device or air duct assembly described in any of the above embodiments.

[0023] The air duct assembly of this embodiment includes a first air duct and a second air duct on the air duct housing, and an air duct switching device including a first cylinder and a second cylinder. The air duct switching device switches between a first state and a second state by rotating the first cylinder relative to the second cylinder. By connecting the first mounting port of the first cylinder and the second mounting port of the second cylinder to the fan cavity, in the first state, when the first opening is connected to the third opening and the second opening is staggered to the fourth opening, the first air duct is connected to the fan cavity through the first and third openings, and the second air duct is disconnected from the fan cavity, so that the fan can provide power for the airflow in the first air duct; in the second state, when the second opening is connected to the fourth opening and the first opening is staggered to the third opening, the second air duct is connected to the fan cavity through the second and fourth openings, and the first air duct is disconnected from the fan cavity. This allows the fan to power the airflow in both the first and second ducts, meaning that the first and second ducts can share the same fan. Compared to related technologies where each duct requires an independent fan, this simplifies the structure and reduces the size of the duct components. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a duct assembly according to an embodiment of the present disclosure.

[0025] Figure 2 This is an exploded view of a duct assembly according to an embodiment of the present disclosure.

[0026] Figure 3 yes Figure 2A schematic diagram of the drive unit (transmission gears are not shown).

[0027] Figure 4 This is a cross-sectional view of a duct assembly according to an embodiment of the present disclosure (the duct switching device is in the first state).

[0028] Figure 5 This is a schematic diagram of the structure of a duct switching device according to an embodiment of the present disclosure (driving components and gears are not shown).

[0029] Figure 6 yes Figure 5 Cross-sectional view of the central duct switching device.

[0030] Figure 7 yes Figure 5 A schematic diagram of the structure of the first cylinder.

[0031] Figure 8 yes Figure 5 A schematic diagram of the structure of the second cylinder.

[0032] Figure 9 This is a cross-sectional view of a duct assembly according to an embodiment of the present disclosure (the duct switching device is in the second state).

[0033] Figure label:

[0034] 100. Air duct components;

[0035] 1. Fan; 11. Fan casing; 111. Fan cavity; 112. Fan outlet; 113. Connecting part; 12. Impeller;

[0036] 2. Duct housing; 21. First duct; 211. Second port; 22. Second duct; 221. Fourth port; 23. Middle section; 231. Rotation hole; 24. Side section; 201. Air box; 202. Air box base; 2021. First protective ring; 2022. Connecting column; 203. Air box cover; 2031. Second protective ring;

[0037] 3. Air duct switching device; 31. First cylinder; 311. First mounting port; 312. First opening; 313. Second opening; 314. Bottom wall; 32. Second cylinder; 321. Second mounting port; 322. Third opening; 323. Fourth opening; 324. Sealing plate; 33. Rotating shaft; 331. Mating hole; 34. Mating column;

[0038] 4. Drive unit; 41. Transmission gear; 42. Gear; 43. Drive component;

[0039] 5. Humidification component; 51. Wet film; 52. Supporting component; 53. Water tank. Detailed Implementation

[0040] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0041] like Figure 1 , Figure 2 , Figure 4 and Figure 9 As shown, the air duct assembly 100 of this embodiment includes a fan 1, an air duct housing 2, and an air duct switching device 3. The fan 1 includes a fan housing 11 and an impeller 12. The fan housing 11 has a fan cavity 111, and the impeller 12 is rotatably disposed within the fan cavity 111. The air duct housing 2 is connected to the fan housing 11, and the air duct housing 2 has a first air duct 21 and a second air duct 22.

[0042] like Figure 3 , Figures 5 to 8 As shown, the duct switching device 3 includes a first cylindrical body 31 and a second cylindrical body 32. The first cylindrical body 31 has a first mounting port 311, a first opening 312, and a second opening 313. The second cylindrical body 32 has a second mounting port 321, a third opening 322, and a fourth opening 323. The second mounting port 321 is corresponding to the first mounting port 311. The first cylindrical body 31 is fitted over the second cylindrical body 32 and can rotate relative to the second cylindrical body 32 around a rotation axis, allowing the duct switching device 3 to switch between a first state and a second state. Both the second mounting port 321 and the first mounting port 311 communicate with the fan cavity 111. In the first state, the first opening 312 is connected to the third opening 322, and the second opening 313 is offset from the fourth opening 323, so that the first air duct 21 is connected to the fan cavity 111, and the second air duct 22 is disconnected from the fan cavity 111. In the second state, the second opening 313 is connected to the fourth opening 323, and the first opening 312 is offset from the third opening 322, so that the second air duct 22 is connected to the fan cavity 111, and the first air duct 21 is disconnected from the fan cavity 111. The first cylinder 31 can rotate relative to the second cylinder 32 about the rotation axis, including the following two situations: the first cylinder 31 is fixedly connected to the air duct housing 11, and the second cylinder 32 rotates relative to the first cylinder 31 about the rotation axis; the second cylinder 32 is fixedly connected to the air duct housing 11, and the first cylinder 311 rotates relative to the second cylinder 32 about the rotation axis.

[0043] The air duct assembly 100 of this embodiment provides a first air duct 21 and a second air duct 22 on the air duct housing 2, and provides an air duct switching device 3 including a first cylinder 31 and a second cylinder 32. The air duct switching device 3 switches between a first state and a second state by rotating the first cylinder 31 relative to the second cylinder 32.

[0044] By connecting the first mounting port 311 of the first cylinder 31 and the second mounting port 321 of the second cylinder 32 to the fan cavity 111, in the first state, when the first opening 312 is connected to the third opening 322 and the second opening 313 is staggered to the fourth opening 323, the first air duct 21 is connected to the fan cavity 111 through the first opening 312 and the third opening 322, and the second air duct 22 is disconnected from the fan cavity 111, so that the fan 1 can provide power for the flow of air in the first air duct 21; in the second state, when the second opening 313 is connected to the fourth opening 323 and the first opening 312 is staggered to the third opening 322, the second air duct 22 is connected to the fan cavity 111 through the second opening 313 and the fourth opening 323, and the first air duct 21 is disconnected from the fan cavity 111.

[0045] Therefore, the fan 1 can provide power for the flow of air in the first air duct 21 and the flow of air in the second air duct 22. That is, the first air duct 21 and the second air duct 22 can share the same fan 1. Compared with the related technology, where each air duct needs to be equipped with an independent fan, the structure of the air duct assembly 100 can be simplified and the volume of the air duct assembly 100 can be reduced.

[0046] Therefore, the air duct assembly 100 of the present disclosure has advantages such as simple structure and small size.

[0047] Optionally, when the second cylinder 32 is fixedly connected to the air duct housing 11, and the first cylinder 31 rotates relative to the second cylinder 32 around the rotation axis, one of the first cylinder 31 and the air duct housing 2 has a rotation shaft 33, and the other of the first cylinder 31 and the air duct housing 2 has a rotation hole 231. The rotation shaft 33 is rotatably inserted into the rotation hole 231 and cooperates with the rotation hole 231.

[0048] For example, such as Figure 2 , Figure 4 and Figure 6 As shown, the first cylinder 31 has a rotating shaft 33, the air duct housing 2 has a rotating hole 231, the rotating shaft 33 is rotatably inserted into the rotating hole 231, and the outer peripheral surface of the rotating shaft 33 is clearance-fitted with the hole wall of the rotating hole 231.

[0049] By providing a rotating shaft 33 in one of the first cylinder 31 and the air duct housing 2, and a rotating hole 231 in the other of the first cylinder 31 and the air duct housing 2, the first cylinder 31 can be limited in a direction perpendicular to the rotation axis of the first cylinder 31 by using the rotating shaft 33 and the rotating hole 231 to avoid tilting of the first cylinder 31 during rotation, which helps to improve the reliability of the air duct assembly 100.

[0050] First cylinder 31 First cylinder 31 First cylinder 31 Second cylinder 32 Second cylinder 32 Second cylinder 32 First cylinder 31 Second cylinder 32

[0051] Optionally, the extending direction of the first cylinder 31 and the extending direction of the second cylinder 32 are both consistent with the extending direction of the rotation axis. The first opening of the first cylinder 31 forms a first mounting port 311, the second opening of the first cylinder 31 is sealed, and the first opening 312 and the second opening 313 are both provided on the cylinder wall of the first cylinder 31. The first opening of the second cylinder 32 forms a second mounting port 321, the second opening of the second cylinder 32 is sealed, and the third opening 322 and the fourth opening 323 are both provided on the cylinder wall of the second cylinder 32.

[0052] To make the technical solution of this disclosure easier to understand, the following description further illustrates the technical solution of this disclosure by taking the extension direction of the rotation axis being consistent with the vertical direction. Wherein, the vertical direction is as follows... Figures 1 to 9 As shown.

[0053] For example, such as Figures 5 to 8 As shown, the upper end of the first cylinder 31 forms a first mounting port 311, and the lower end of the first cylinder 31 is sealed. A first opening 312 and a second opening 313 are both located on the wall of the first cylinder 31. The upper end of the second cylinder 32 forms a second mounting port 321, and the lower end of the second cylinder 32 is sealed. A third opening 322 and a fourth opening 323 are both located on the wall of the second cylinder 32.

[0054] By forming a first mounting port 311 from the first opening of the first cylinder 31, and placing a first opening 312 and a second opening 313 on the cylinder wall of the first cylinder 31, the spacing between the first mounting port 311, the first opening 312, and the second opening 313 is relatively large, which is beneficial to improving the structural strength of the first cylinder 31. Similarly, by forming a second mounting port 321 from the first opening of the second cylinder 32, and placing a third opening 322 and a fourth opening 323 on the cylinder wall of the second cylinder 32, the spacing between the second mounting port 321, the third opening 322, and the fourth opening 323 is relatively large, which is beneficial to improving the structural strength of the second cylinder 32. This, in turn, improves the reliability of the duct switching device 3 and the duct assembly 100 having the duct switching device 3.

[0055] Optionally, such as Figure 6As shown, a rotating shaft 33 is disposed on the first cylindrical body 31, and the rotating shaft 33 has a mating hole 331. The second cylindrical body 32 has a mating post 34, which is rotatably inserted into the mating hole 331 relative to the rotating shaft 33 and mates with the mating hole 331. The mating post 34 and the rotating hole 331 are respectively disposed on both sides of the rotating shaft 33 in the extending direction of the rotating shaft 33.

[0056] For example, such as Figure 4 and Figure 6 As shown, the lower end of the first cylinder 31 is sealed by the bottom wall 314, and the lower end of the second cylinder 32 is sealed by the sealing plate 324. A rotating shaft 33 extends vertically and is located at the lower part of the bottom wall 314. A mating post 34 is located at the lower part of the sealing plate 324, and a rotating hole 231 is located below the mating post 34. The mating hole 331 extends vertically through the rotating shaft 33, and the mating post 34 is inserted into the mating hole 331 from top to bottom, with a clearance fit between the outer circumferential surface of the mating post 34 and the wall of the mating hole 331. Similarly, the rotating shaft 33 is inserted into the rotating hole 231 from top to bottom, with a clearance fit between the outer circumferential surface of the rotating shaft 33 and the wall of the rotating hole 231.

[0057] By placing the mating post 34 and the rotating hole 231 on both sides of the rotating shaft 33 in the extension direction of the rotating shaft 33, and by providing the mating hole 331 on the rotating shaft 33, the first cylinder 31 can be more effectively limited in the direction perpendicular to the rotation axis of the first cylinder 31, which is beneficial to further improve the reliability of the air duct switching device 3 and the air duct assembly 100 having the air duct switching device 3.

[0058] Optionally, the first opening 312 is located on one side of the second opening 313 in the extending direction of the first cylinder 31. The third opening 322 is located on one side of the fourth opening 323 in the extending direction of the second cylinder 32.

[0059] For example, such as Figures 5 to 8 As shown, the first opening 312 is located above the second opening 313, and the third opening 322 is located above the fourth opening 323. At this time, the first air duct 21 is located above the second air duct 22.

[0060] By placing the first opening 312 on one side of the second opening 313 in the extending direction of the first cylinder 31, and placing the third opening 322 on one side of the fourth opening 323 in the extending direction of the second cylinder 32, it is possible to avoid opening too many openings in the circumferential direction of the first cylinder 31 and the second cylinder 32. This is beneficial to improving the structural strength of the first cylinder 31 and the second cylinder 32, thereby further improving the reliability of the air duct switching device 3 and the air duct assembly 100 having the air duct switching device 3.

[0061] Optionally, such as Figures 5 to 8 As shown, there are multiple first openings 312 and multiple third openings 322. In the first state, the first opening 312 and the third opening 322 correspond one-to-one and are connected. There are multiple second openings 313 and multiple fourth openings 323. In the first state, the second opening 313 and the fourth opening 323 correspond one-to-one and are connected.

[0062] By setting the number of the first opening 312, the third opening 322, the second opening 313 and the fourth opening 323 to multiple, the air duct switching device 3 can be applied to situations where the number of the first air duct 21 and the second air duct 22 is multiple, which helps to improve the versatility of the air duct switching device 3.

[0063] Optionally, such as Figure 4 and Figure 9 As shown, the first cylinder 31 is a rotating cylinder for rotatably connecting with the air duct shell, and the second cylinder 32 is a fixed cylinder for fixedly connecting with the air duct shell. Multiple first openings 312 and multiple second openings 313 are alternately arranged along the circumference of the first cylinder 31, and the arrangement direction of adjacent third openings 322 and fourth openings 323 is parallel to the extension direction of the second cylinder 32.

[0064] For example, such as Figures 5 to 8 As shown, there are two of each of the following: a first opening 312, a second opening 313, a third opening 322, and a fourth opening 323. The two first openings 312 are arranged radially opposite each other along the first cylinder 31, the two second openings 313 are arranged radially opposite each other along the first cylinder 31, the two third openings 322 are arranged radially opposite each other along the second cylinder 32, and the two fourth openings 323 are arranged radially opposite each other along the second cylinder 32. Each second opening 313 is located circumferentially between two first openings 312 on the first cylinder 31, and each first opening 312 is located circumferentially between two second openings 313 on the first cylinder 31. In the case of adjacent third openings 322 and fourth openings 323, the third opening 322 is positioned directly above the fourth opening 323.

[0065] By arranging multiple first openings 312 and multiple second openings 313 alternately along the circumference of the first cylinder 31, the spacing between the first openings 312 and the second openings 313 can be avoided, which is beneficial to improving the structural strength of the first cylinder 31, thereby further improving the reliability of the air duct switching device 3 and the air duct assembly 100.

[0066] In other embodiments, the second cylinder 32 is a rotating cylinder for rotatably connecting with the duct housing, and the first cylinder 31 is a fixed cylinder for fixedly connecting with the duct housing. A plurality of third openings 322 and a plurality of fourth openings 323 are alternately arranged along the circumference of the second cylinder 32, and the arrangement direction of adjacent first openings 312 and second openings 313 is parallel to the extension direction of the first cylinder 31.

[0067] By alternating multiple third openings 322 and multiple fourth openings 323 along the circumference of the second cylinder 32, the close spacing between the third openings 322 and the fourth openings 323 can be avoided, which is beneficial to improving the structural strength of the second cylinder 32, thereby further improving the reliability of the air duct switching device 3 and the air duct assembly 100.

[0068] Optionally, such as Figures 5 to 8 As shown, there are two first openings 312 and two third openings 322, with the two first openings 312 facing each other and the two third openings 322 facing each other. There are two second openings 313 and two fourth openings 323, with the two second openings 313 facing each other and the two fourth openings 323 facing each other.

[0069] The two first openings 312 are arranged opposite each other, the two third openings 322 are arranged opposite each other, the two second openings 313 are arranged opposite each other, and the two fourth openings 323 are arranged opposite each other. This results in relatively large distances between the two first openings 312, the two third openings 322, the two second openings 313, and the two fourth openings 323, which helps to improve the structural strength of the first cylinder 31 and the second cylinder 32. This, in turn, improves the reliability of the duct switching device 3 and the duct assembly 100 incorporating the duct switching device 3. Furthermore, it facilitates the processing and manufacturing of the first cylinder 31 and the second cylinder 32, thus reducing the manufacturing cost of the duct switching device 3.

[0070] Optionally, such as Figure 6 As shown, the fourth opening 323 is positioned closer to the sealing plate 324 than the third opening 322, and the projection of the sealing plate 324 onto the projection plane coincides with the projection of the fourth opening 323 onto the projection plane. The projection plane is perpendicular to the arrangement direction of the two fourth openings 323.

[0071] For example, such as Figure 6 As shown, the fourth opening 323 is circular. The second cylinder 32 is a cylindrical body, and the two fourth openings 323 are arranged opposite each other along one diameter of the second cylinder 32, with the projection plane perpendicular to that diameter. The projection of the sealing plate 324 on the projection plane is semi-circular, and the projection of the fourth opening 323 on the projection plane is circular.

[0072] By aligning the projection of the sealing plate 324 on the projection surface with the projection of the fourth opening 323 on the projection surface, the airflow can flow out along the fourth opening 323 after reaching the sealing plate 324 of the second cylinder 32, thus preventing the airflow from accumulating at the sealing plate 324 and improving the reliability of the air duct assembly 100.

[0073] In some embodiments, one of the first cylinder 31 and the second cylinder 32 is a rotating cylinder for rotatably connecting with the duct housing, and the other of the first cylinder 31 and the second cylinder 32 is a second cylinder 32 for fixedly connecting with the duct housing. The duct switching device 3 further includes a driving device 4, which is connected to the rotating cylinder to drive the rotating cylinder to rotate.

[0074] For example, such as Figure 2 As shown, the first cylinder 31 is a rotating cylinder, the second cylinder 32 is a fixed cylinder, and the driving device 4 is connected to the first cylinder 31 to drive the first cylinder 31 to rotate.

[0075] By setting up a drive device 4, the first cylinder 31 can be driven to rotate, thus achieving automatic rotation of the first cylinder 31 and better meeting user needs.

[0076] Optionally, such as Figure 3 and Figure 5 As shown, the drive device 4 includes a transmission gear 41, a gear 42, and a drive component 43. The transmission gear 41 is disposed on the rotating cylinder, and the gear 42 meshes with the transmission gear 41. The drive component 43 is connected to the gear 42 to drive the gear 42 to rotate. The drive component 43 can be a motor.

[0077] For example, if the first cylinder 31 is a rotating cylinder, when the first cylinder 31 needs to be rotated, the driving component 43 drives the gear 42 to rotate. The gear 42 meshes with the transmission gear 41 of the first cylinder 31, thereby driving the first cylinder 31 to rotate. Utilizing the meshing of the gear 42 with the transmission gear 41 to drive the first cylinder 31 to rotate helps improve the rotational stability of the rotating cylinder, thereby further improving the reliability of the air duct assembly 100.

[0078] In other embodiments, the drive unit 4 may also include a worm gear mechanism.

[0079] The direction of extension of the rotation axis.

[0080] Optionally, the first air duct 21 is disposed on both sides of the air duct switching device 3 in a first direction. The second air duct 22 is disposed on both sides of the air duct switching device 3 in a first direction. The first direction is perpendicular to the extension direction of the rotation axis.

[0081] To make the technical solution of this disclosure easier to understand, the following description further illustrates the technical solution of this disclosure, taking the first direction and the left and right directions being consistent as an example.

[0082] For example, such as Figure 4 and Figure 9 As shown, the first air duct 21 is arranged on both sides of the air duct switching device 3 in the left-right direction, and the second air duct 22 is arranged on both sides of the air duct switching device 3 in the left-right direction.

[0083] In the prior art, two air ducts with the same function are usually provided. By providing a first air duct 21 and a second air duct 22 on both sides of the air duct switching device 3, the number of the first air duct 21 and the second air duct 22 are both two, so that the structure of the air duct assembly 100 of this embodiment is more consistent with that of the air duct assembly in the prior art, which further facilitates the design and manufacturing of the air duct assembly 100.

[0084] Optionally, the first air duct 21 has a first port and a second port 211 opposite each other in its extension direction, with the first port being closer to the fan 1 than the second port 211. The second ports 211 of the first air duct 21 located on both sides of the air duct switching device 3 have the same orientation. The second air duct 22 has a third port and a fourth port 221 opposite each other in its extension direction, with the third port being closer to the fan 1 than the fourth port 221. The fourth ports 221 of the second air duct 22 located on both sides of the air duct switching device 3 have the same orientation.

[0085] For example, the first port is the air inlet of the first air duct 21, the second port 211 is the air outlet of the first air duct 21; the third port is the air inlet of the second air duct 22, and the fourth port 221 is the air outlet of the second air duct 22.

[0086] In the prior art, two air ducts with the same function are provided, and the air outlets of the air ducts with the same function face the same direction. By making the above-described design of the first air duct 21 and the second air duct 22, it is convenient to make the air outlets of the first air duct 21 located on both sides of the air duct switching device 3 face the same direction, and to make the air outlets of the second air duct 22 located on both sides of the air duct switching device 3 face the same direction. This makes the structure of the air duct assembly 100 of this embodiment more consistent with that of the air duct assembly in the prior art, and further facilitates the design and manufacture of the air duct assembly 100.

[0087] Optionally, such as Figure 1 As shown, the air duct housing 2 includes a central portion 23 and side portions 24 disposed on both sides of the central portion 23 in a first direction. The central portion 23 extends along the first direction, and the side portions 24 extend along a second direction. The switching device is connected to the central portion 23, and the central portion 23 and the side portions 24 form a first air duct 21 and a second air duct 22.

[0088] To make the technical solution of this disclosure easier to understand, the following description further illustrates the technical solution of this disclosure using the example of the second direction being consistent with the front-back direction. Wherein, the front-back direction is as follows... Figure 1 , Figure 2 , Figure 4 and Figure 9 As shown.

[0089] For example, such as Figure 1 As shown, the middle portion 23 extends in the left-right direction, and the side portions 24 extend in the front-back direction. Side portions 24 are provided on both the left and right sides of the middle portion 23. A first air duct 21 and a second air duct 22 are formed between the middle portion 23 and the side portions 24 on the left side of the air duct switching device 3, and a first air duct 21 and a second air duct 22 are also formed between the middle portion 23 and the side portions 24 on the right side of the air duct switching device 3. A portion of the first air duct 21 extends in the left-right direction, and another portion extends in the front-back direction, such that the second ports 211 of both first air ducts 21 face forward; a portion of the second air duct 22 extends in the left-right direction, and another portion extends in the front-back direction, such that the fourth ports 221 of both second air ducts 22 face forward.

[0090] The above design of the air duct housing 2 facilitates the same orientation of the air outlets of the first air duct 21 located on both sides of the air duct switching device 3, and the same orientation of the air outlets of the second air duct 22 located on both sides of the air duct switching device 3, which helps to further simplify the structure of the air duct assembly 100.

[0091] Optionally, the side portions 24 protrude beyond the middle portion 23 along a second direction, forming an installation space between the middle portion 23 and the side portions 24 located on both sides of the middle portion 23. One of the first air duct 21 and the second air duct 22 is a humidifying air duct. The air duct assembly 100 also includes a humidifying component 5, which is connected to the air duct housing 2. The humidifying component 5 includes a wet membrane 51, a receiving member 52, and a water tank 53. The wet membrane 51 is disposed within the humidifying air duct, and a portion of the wet membrane 51 extends into the receiving member 52. The water tank 53 communicates with the receiving member 52 to supply water to the receiving member 52. At least a portion of the receiving member 52 and the water tank 53 are located within the installation space.

[0092] At least a portion of the receiving component 52 and the water tank 53 are located within the installation space, which can be understood as: a portion of the receiving component 52 and the water tank 53 are located within the installation space; or, the entire receiving component 52 and the water tank 53 are located within the installation space.

[0093] For example, such as Figure 1As shown, the side portion 24 protrudes forward from the middle portion 23, and the front side of the middle portion 23, the right side of the left side portion 24, and the left side of the right side portion 24 form an installation space. The second air duct 22 is a humidification air duct. The water tank 53 supplies water to the receiving part 52, and the wet membrane 51 absorbs the water from the receiving part 52, thereby humidifying the airflow passing through the second air duct 22.

[0094] The installation space is formed by the side portion 24 and the middle portion 23, and at least a part of the receiving part 52 and the water tank 53 are placed in the installation space. This helps to improve the structural compactness of the air duct assembly 100, thereby helping to further reduce the volume of the air duct assembly 100.

[0095] Optionally, the receiving element 52 is a pallet.

[0096] Optionally, the first air duct 21 is an air outlet duct, and the second air duct 22 is a humidification duct, with the second air duct 22 positioned lower than the first air duct 21. The air outlet duct can be a fresh air duct or a conventional duct without fresh air and humidification functions.

[0097] Understandably, because the humidifying air duct contains a wet film 51, and components such as a water tank 53 for humidifying the wet film 51 need to be installed on the side of the humidifying air duct, the overall weight of the humidifying air duct is relatively large. By setting the humidifying air duct lower than the outlet air duct, it is beneficial to lower the center of the air duct assembly 100, thereby improving the stability of the air duct assembly 100.

[0098] Optionally, such as Figure 2 As shown, the air duct housing 2 includes a bellows 201, a bellows base 202, and a bellows cover 203. The bellows base 202 is located at the bottom of the bellows 201, and the bellows cover 203 is located at the top of the bellows 201. The bellows 201, the bellows base 202, and the bellows cover 203 define a first air duct 21 and a second air duct 22. The middle portion of the bellows 201, the bellows base 202, and the bellows cover 203 forms the aforementioned middle portion 23, and the two side portions of the bellows 201, the bellows base 202, and the bellows cover 203 form the aforementioned side portions 24.

[0099] like Figure 2 , Figure 4 and Figure 9 As shown, the bellows base 202 is provided with a first protective ring 2021, the bottom end of the first cylinder 31 is located inside the first protective ring 2021, and a connecting post 2022 is also provided inside the first protective ring 2021, with a rotating hole 231 provided on the connecting post 2022. The top of the bellows cover 203 is provided with a second protective ring 2031, and the top end of the first cylinder 31 is located inside the second protective ring 2031.

[0100] Optionally, such as Figure 2 , Figure 4 and Figure 9 As shown, the fan housing 11 has a fan outlet 112 and a plug-in part 113. The plug-in part 113 is inserted into the second mounting port 321 of the second cylinder 32 and is sealed with the second cylinder 32. The fan outlet 112 is provided corresponding to the second mounting port 321 of the second cylinder 32, so that the fan outlet 112 is connected to the second mounting port 321.

[0101] Method of using the air duct assembly 100 according to this embodiment:

[0102] Driven by the drive device 4, the first cylinder 31 is rotated. When the first opening 312 of the first cylinder 31 is directly opposite to the third opening 322 of the second cylinder 32, the second opening 313 of the first cylinder 31 and the fourth opening 323 of the second cylinder 32 are just offset. At this time, the fan chamber 111 is connected to the first air duct 21, and the airflow introduced by the fan 1 can flow out through the first air duct 21 and the air outlet of the first air duct 21. When the second opening 313 of the first cylinder 31 is directly opposite to the fourth opening 323 of the second cylinder 32, the first opening 312 of the first cylinder 31 and the third opening 322 of the second cylinder 32 are just offset. At this time, the fan chamber 111 is connected to the second air duct 22, and the airflow introduced by the fan 1 can flow through the second air duct 22 and the air outlet of the second air duct 22. The humidification function of the air is achieved by using the wet film 51 set in the second air duct 22.

[0103] The air duct assembly 100 of this embodiment utilizes the rotation of the first cylinder 31 to connect the fan 1 with different air ducts, enabling the air duct assembly 100 to perform different functions. While simplifying the overall structure of the air duct assembly 100, it can also reduce the space occupied by the air duct assembly 100.

[0104] The air conditioner of this disclosure includes the air duct switching device 3 or air duct assembly 100 of any of the above embodiments.

[0105] Since the air duct switching device 3 and air duct assembly 100 of the present disclosure have advantages such as simple structure and small size, the air conditioner of the present disclosure has advantages such as low cost and small space occupation.

[0106] Although embodiments of the present disclosure have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the scope of protection of the present disclosure.

Claims

1. A duct assembly, characterized in that, include: A fan, the fan including a fan housing and an impeller, the fan housing having a fan cavity, and the impeller being rotatably disposed within the fan cavity; A duct housing, which is connected to the fan housing, and the duct housing has a first duct and a second duct; A duct switching device is provided between the duct housing and the fan housing; The air duct switching device includes: A first cylindrical body, the first cylindrical body being provided with a first mounting port, a first opening and a second opening; The second cylinder is provided with a second mounting port, a third opening and a fourth opening. The second mounting port is provided corresponding to the first mounting port. The first mounting port and the second mounting port are used to communicate with the same fan cavity. The first cylinder is sleeved outside the second cylinder and can rotate relative to the second cylinder about a rotation axis, so that the air duct switching device can switch between a first state and a second state; the first air duct is disposed on both sides of the air duct switching device in a first direction, and the second air duct is disposed on both sides of the air duct switching device in the first direction, the first direction being perpendicular to the extension direction of the rotation axis; the air duct shell includes a middle part and side parts disposed on both sides of the middle part in the first direction, the middle part extending along the first direction, the side parts extending along a second direction, the air duct switching device being connected to the middle part, and the middle part and the side parts forming the first air duct and the second air duct, the second direction being perpendicular to the extension direction of the rotation axis and the first direction; In the first state, the first opening is connected to the third opening, and the second opening is offset from the fourth opening. The first air duct is connected to the fan cavity through the air duct switching device, and the second air duct is disconnected from the fan cavity through the air duct switching device. In the second state, the second opening is connected to the fourth opening, and the first opening is offset from the third opening. The second air duct is connected to the fan cavity through the air duct switching device, and the first air duct is disconnected from the fan cavity through the air duct switching device.

2. The air duct assembly according to claim 1, characterized in that, The extension direction of the first cylinder and the extension direction of the second cylinder are both consistent with the extension direction of the rotation axis; The first opening of the first cylinder forms the first mounting port, and the second opening of the first cylinder is sealed. Both the first opening and the second opening are located on the cylinder wall of the first cylinder. The first opening of the second cylinder forms the second mounting port, the second opening of the second cylinder is sealed, and the third opening and the fourth opening are both located on the cylinder wall of the second cylinder.

3. The air duct assembly according to claim 2, characterized in that, The first opening is located on one side of the second opening in the extending direction of the first cylinder, and the third opening is located on one side of the fourth opening in the extending direction of the second cylinder.

4. The air duct assembly according to claim 2, characterized in that, There are multiple first openings and multiple third openings. In the first state, the first opening and the third opening correspond one-to-one and are connected. There are multiple second openings and multiple fourth openings. In the first state, the second opening and the fourth opening correspond one-to-one and are connected.

5. The air duct assembly according to claim 4, characterized in that, The first cylindrical body is a rotating cylindrical body for rotatably connecting with the duct housing, and the second cylindrical body is a fixed cylindrical body for fixedly connecting with the duct housing. Multiple first openings and multiple second openings are alternately arranged circumferentially along the first cylindrical body, and the arrangement directions of adjacent third and fourth openings are parallel to the extension direction of the second cylindrical body; or The second cylinder is a rotating cylinder for rotatably connecting with the air duct housing, and the first cylinder is a fixed cylinder for fixedly connecting with the air duct housing. The plurality of third openings and the plurality of fourth openings are alternately arranged along the circumference of the second cylinder, and the arrangement direction of adjacent first openings and second openings is parallel to the extension direction of the first cylinder.

6. The air duct assembly according to claim 4, characterized in that, The number of the first opening and the third opening are both two, with the two first openings arranged opposite each other and the two third openings arranged opposite each other; There are two of each of the second and fourth openings, with the two second openings and the two fourth openings arranged opposite each other.

7. The air duct assembly according to claim 6, characterized in that, The second opening of the second cylinder is provided with a sealing plate to seal the second opening of the second cylinder; The fourth opening is positioned closer to the second opening of the second cylinder than the third opening. The projection of the sealing plate on the projection plane coincides with the projection of the fourth opening on the projection plane, wherein the projection plane is perpendicular to the arrangement direction of the two fourth openings.

8. The air duct assembly according to claim 1, characterized in that, One of the first cylinder and the second cylinder is a rotating cylinder for rotatably connecting with the air duct shell, and the other of the first cylinder and the second cylinder is a fixed cylinder for fixedly connecting with the air duct shell. The air duct switching device also includes a drive device, which is connected to the rotating cylinder to drive the rotating cylinder to rotate.

9. The air duct assembly according to claim 8, characterized in that, The driving device includes: A transmission gear, wherein the transmission gear is disposed on the rotating cylinder; Gear, which meshes with the transmission gear; A driving component, which is connected to the gear to drive the gear to rotate.

10. The air duct assembly according to claim 1, characterized in that, The first air duct has a first port and a second port opposite to each other in its extension direction. The first port is located closer to the fan than the second port. The second ports of the first air duct located on both sides of the air duct switching device have the same orientation. The second air duct has a third port and a fourth port opposite each other in its extension direction, the third port being located closer to the fan than the fourth port, and the fourth ports of the second air ducts located on both sides of the air duct switching device having the same orientation.

11. The air duct assembly according to claim 10, characterized in that, The side portion protrudes from the middle portion along the second direction, and the middle portion and the side portions located on both sides of the middle portion form an installation space. One of the first air duct and the second air duct is a humidifying air duct. The air duct assembly also includes a humidifying component. The humidifying component is connected to the air duct housing. The humidifying component includes a wet film, a receiving member, and a water tank. The wet film is disposed in the humidifying air duct, and a portion of the wet film extends into the receiving member. The water tank is connected to the receiving member to supply water to the receiving member. At least a portion of the receiving component and the water tank are located within the installation space.

12. The air duct assembly according to claim 1, characterized in that, The first air duct is an air outlet duct, and the second air duct is a humidification duct. The second air duct is set lower than the first air duct.

13. An air conditioner, characterized in that, The duct assembly includes any one of claims 1-12.

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