Fresh air device, air treatment equipment, control method and control device

Abstract

The invention discloses a fresh air device, air treatment equipment, a control method and a control device. The fresh air device comprises a shell, an air duct is arranged in the shell, and a first air passing opening and a second air passing opening are formed in the two ends of the air duct correspondingly; the fan is rotatably mounted in the air duct and is arranged to drive air to flow through the air duct; the first switching piece is connected with the fan and is arranged to drive the fan to rotate between a fresh air position and an exhaust position, so that the fresh air device is switched between a fresh air mode and an exhaust mode; on the basis that the fresh air device is in the fresh air mode, the draught fan is located at the fresh air position to drive air to flow from the first air passing opening to the second air passing opening. On the basis that the fresh air device is in the exhaust mode, the fan is located at the exhaust position to drive air to flow from the second air passing opening to the first air passing opening. According to the scheme, the airflow direction can be changed only by adjusting the position of the fan through the first switching piece, so that the structure of the air duct is simplified, the size of the fresh air device is reduced, and the cost of the fresh air device is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment, in particular to a fresh air device, an air treatment equipment, a control method and a control device. BACKGROUND

[0002] In the related art, a fresh air device with fresh air mode and exhaust mode needs to be equipped with two fans, one fan is used for sending fresh air, and the other fan is used for discharging dirty air. This structure results in large size, high cost and complex air duct structure of the fresh air device. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a fresh air device, an air treatment equipment, a control method and a control device, which are beneficial to reduce the size of the fresh air device, reduce the cost of the fresh air device, and simplify the structure of the fresh air device.

[0004] The embodiment of the present application provides a fresh air device, which comprises: a shell, an air duct is arranged in the shell, and a first air passage and a second air passage are arranged at two ends of the air duct respectively; a fan rotatably installed in the air duct and arranged to drive gas to flow through the air duct; and a first switching piece connected with the fan and arranged to drive the fan to rotate between a fresh air position and an exhaust position, so as to switch the fresh air device between a fresh air mode and an exhaust mode; wherein, based on the fresh air device being in the fresh air mode, the fan is located at the fresh air position to drive gas to flow from the first air passage to the second air passage; and based on the fresh air device being in the exhaust mode, the fan is located at the exhaust position to drive gas to flow from the second air passage to the first air passage.

[0005] In this way, the fan and the air duct used in the fresh air mode of the fresh air device are the same as the fan and the air duct used in the exhaust mode, and only the position of the fan needs to be adjusted by the first switching piece to change the direction of the airflow, thereby realizing the switching of the working mode, without the need to set the fan and the air duct for the fresh air mode and the exhaust mode respectively, thereby being beneficial to reduce the number of fans, simplify the structure of the air duct, reduce the size of the fresh air device, and reduce the cost of the fresh air device.

[0006] The embodiment of the present application also provides an air treatment equipment comprising the fresh air device according to any one of the above embodiments.

[0007] The embodiment of the present application also provides a control method applied to the fresh air device according to any one of the above embodiments, and the control method comprises:

[0008] determining a target working mode, the target working mode comprising a fresh air mode and an exhaust mode;

[0009] Based on the target operating mode being fresh air mode, the first switching element is controlled to position the fan at the fresh air location;

[0010] Based on the target operating mode being exhaust mode, the first switching element is controlled to position the fan at the exhaust location.

[0011] This application also provides a control device, including a processor and a memory storing a computer program, wherein the processor executes the computer program to implement the steps of the control method as described in any of the above embodiments. Attached Figure Description

[0012] Figure 1 This is an exploded structural diagram of a fresh air device provided in some embodiments of this application;

[0013] Figure 2 for Figure 1 The diagram shows a three-dimensional structural schematic of the fresh air unit after assembly, viewed from one perspective.

[0014] Figure 3 for Figure 2 A three-dimensional structural diagram of the fresh air system from another perspective;

[0015] Figure 4 for Figure 2 The diagram shows a top view of the fresh air system in fresh air mode.

[0016] Figure 5 for Figure 4 A schematic cross-sectional view of the fresh air unit along direction AA.

[0017] Figure 6 for Figure 2 The diagram shows a top view of the fresh air unit in exhaust mode.

[0018] Figure 7 for Figure 6 A schematic cross-sectional view of the fresh air unit along the BB direction;

[0019] Figure 8 A three-dimensional structural schematic diagram of the air vent fixing plate provided in some embodiments of this application;

[0020] Figure 9 for Figure 8 The diagram shows the left view of the air vent fixing plate.

[0021] Figure 10 A three-dimensional structural schematic diagram of the first flow-concentrating hood provided for some embodiments of this application;

[0022] Figure 11 for Figure 10 The diagram shows a rear view of the first concentrator.

[0023] Figure 12 for Figure 8 The air vent fixing plate shown is Figure 10 A schematic diagram of the assembly structure of the first flow-concentrating shroud is shown.

[0024] Figure 13 for Figure 12 A half-sectional view of the structure shown;

[0025] Figure 14 A three-dimensional structural schematic diagram of the cylinder from one perspective, provided for some embodiments of this application;

[0026] Figure 15 for Figure 14 A three-dimensional structural diagram of the cylinder shown from another perspective;

[0027] Figure 16 A three-dimensional structural schematic diagram of a fan provided in some embodiments of this application;

[0028] Figure 17 for Figure 16 A schematic diagram of the left-side structure of the fan shown;

[0029] Figure 18 for Figure 17 A schematic cross-sectional view of the fan along the CC direction;

[0030] Figure 19 This is a schematic diagram of the structure of the second flow-concentrating shroud provided in some embodiments of this application;

[0031] Figure 20 A schematic diagram of the left-side structure of a repair plate provided in some embodiments of this application;

[0032] Figure 21 for Figure 20 The diagram shows the main structural view of the inspection plate.

[0033] Figure 22 This is a schematic diagram of the structure of a fresh air device provided in some embodiments of this application;

[0034] Figure 23 for Figure 22 A schematic cross-sectional view of the fresh air unit along the DD direction;

[0035] Figure 24 This is a flowchart illustrating the control method provided in some embodiments of this application.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] 1. Shell, 11. Cylinder, 111. Shaft hole, 112. Bearing seat, 113. Subshell, 115. First baffle, 12. Air duct, 121. First air outlet, 122. Second air outlet;

[0038] 2. Fan, 21. First support, 211. First section, 2111. First rotating shaft, 2112. Second rotating shaft, 2113. Second baffle, 2114. Sealing rib, 212. Second section, 2121. Spherical surface, 2122. End surface, 2123. Air passage notch, 22. Fan wheel, 23. Motor.

[0039] 31 First switching component, 32 Second switching component;

[0040] 4. Air outlet fixing plate, 41. Connecting plate, 411. Connecting hole, 42. Butt joint, 421. First cylindrical part, 422. Flanged edge, 4221. Buckle, 4222. Avoidance notch, 4223. Folded edge, 4224. First limiting hole, 4225. Insertion part, 4226. Limiting part, 423. Air passage.

[0041] 5 First flow-concentrating cover, 51 Slot, 511 Insertion slot, 512 Limiting slot, 52 Connecting protrusion, 53 Second limiting hole;

[0042] 6 Second concentrator cover, 61 Second cylindrical section, 611 Inspection port, 62 Inspection plate, 621 Shaft seat;

[0043] 7. Filter assembly, 71. Filter, 72. Second bracket, 721. Fourth baffle;

[0044] 8 clamps. Detailed Implementation

[0045] The principles and features of this application are described below with reference to the accompanying drawings. The examples given are only for explaining this application and are not intended to limit the scope of this application.

[0046] like Figures 1 to 7 As shown in the figure, this application provides a fresh air device, including: a housing 1, a fan 2 and a first switching component 31.

[0047] Specifically, the housing 1 is provided with an air duct 12. The two ends of the air duct 12 are respectively provided with a first air inlet 121 and a second air inlet 122.

[0048] The fan 2 is rotatably installed inside the air duct 12 and is configured to drive the gas to flow through the air duct 12.

[0049] The first switching component 31 is connected to the fan 2 and is configured to drive the fan 2 to rotate between the fresh air position and the exhaust position, so that the fresh air device switches between fresh air mode and exhaust mode. The fan 2 can be a unidirectional rotating fan 2. Reverse air supply is achieved by changing the position of the fan 2 through rotation, rather than changing the direction of airflow by changing the rotation of the impeller 22 of the fan 2 itself. The exhaust function can be achieved without changing the structure of the air duct.

[0050] In this configuration, with the fresh air device in fresh air mode, fan 2 is positioned at the fresh air location to drive gas from the first air inlet 121 to the second air inlet 122, such as... Figure 4 and Figure 5 As shown.

[0051] With the fresh air device in exhaust mode, fan 2 is positioned in the exhaust location to drive gas from the second air inlet 122 to the first air inlet 121, such as Figure 6 and Figure 7 As shown.

[0052] In this way, the fan 2 and duct 12 used in the fresh air mode of the fresh air device are the same as those used in the exhaust mode. The airflow direction can be changed simply by adjusting the position of the fan 2 through the first switching component 31, thereby achieving the switching of the working mode. There is no need to set up separate fans 2 and ducts 12 for the fresh air mode and exhaust mode, which helps to reduce the number of fans 2, simplify the structure of the duct 12, reduce the size of the fresh air device, and reduce the cost of the fresh air device.

[0053] In some exemplary embodiments, when the air conditioner rotates from the fresh air position to the exhaust position, the first switching element 31 drives the fan 2 to rotate 180°. When the air conditioner rotates from the exhaust position to the fresh air position, the first switching element 31 drives the fan 2 to rotate 180°.

[0054] Of course, the rotation angle of fan 2 when switching between the fresh air position and the exhaust position is not limited to 180°, but can also fluctuate within a certain range above and below 180°.

[0055] In some exemplary embodiments, the housing 1 includes a cylindrical body 11, such as... Figure 14 and Figure 15 As shown. The fan 2 includes a first support 21, a fan wheel 22, and a motor 23, as shown. Figures 16 to 18 As shown. The first bracket 21 is rotatably mounted on the cylinder 11 and connected to the first switching element 31. The impeller 22 and the motor 23 are mounted on the first bracket 21, and the motor 23 is connected to the impeller 22 to drive the impeller 22 to rotate.

[0056] The cylinder 11 mainly serves to fix the fan 2 and provide airflow guidance.

[0057] The cylinder 11 can be, but is not limited to, a cylindrical structure open at both ends, such as... Figure 14 and Figure 15 As shown. The first switching element 31 can be, but is not limited to, a stepper motor. The first switching element 31 can be installed on the outer wall of the cylinder 11.

[0058] In some exemplary embodiments, such as Figure 14 and Figure 15 As shown, the cylinder 11 has a shaft hole 111 and a bearing seat 112 arranged opposite to each other, with the bearing seat 112 located below the shaft hole 111. The first bracket 21 is provided with a first rotating shaft 2111 and a second rotating shaft 2112. The first rotating shaft 2111 is inserted into the shaft hole 111 and connected to the first switching member 31, and the second rotating shaft 2112 is inserted into the bearing seat 112.

[0059] Considering that the fan 2 is relatively heavy, it is easier to achieve rotation of the first support 21 by using bearing support. Therefore, a bearing seat 112 is provided at the lower part of the cylinder 11 and a shaft hole 111 is provided at the upper part. A bearing can be placed in the bearing seat 112 to support the second rotating shaft 2112.

[0060] Of course, the bearing housing 112 can be omitted, and shaft holes 111 can be provided on both the upper and lower parts of the cylinder 11. Alternatively, shaft holes 111 or bearing housing 112 can be provided on the first bracket 21, and the rotating shaft can be mounted on the cylinder 11.

[0061] In some exemplary embodiments, such as Figure 14 As shown, the cylindrical body 11 includes multiple sub-shells 113 that are separately arranged, and the multiple sub-shells 113 are spliced ​​and fixed along the circumference of the cylindrical body 11 to form a cylindrical structure.

[0062] This helps reduce the difficulty of assembling and disassembling the fan 2 and the cylinder 11, thereby improving assembly and disassembly efficiency. The connection method between adjacent sub-shells 113 is unrestricted and can be a fastener connection, a snap-fit ​​connection, or other similar methods.

[0063] In one example, such as Figure 14 As shown, the cylinder 11 includes two separate sub-shells 113, which are fixedly connected by a buckle 4221. The first bracket 21 of the fan 2 can be connected to one of the sub-shells 113 first, and then the other sub-shell 113 can be placed on top and the two sub-shells 113 can be fixedly connected.

[0064] In some exemplary embodiments, such as Figure 14 and Figure 15 As shown, the inner wall of the cylinder 11 is provided with a first baffle 115 arranged circumferentially along the cylinder 11. The outer wall of the first support 21 is provided with a second baffle 2113, as shown. Figure 16As shown. The first baffle 115 is configured to engage with the second baffle 2113 to stop the fan 2 from continuing to rotate when the fan 2 rotates in the first rotation direction to the fresh air position and / or rotates in the second rotation direction to the exhaust position. The second rotation direction is the opposite of the first rotation direction.

[0065] In other words, when the fan 2 rotates from the exhaust position to the fresh air position along the first rotation direction, the second baffle 2113 can engage with the first baffle 115 to stop the fan 2 from continuing to rotate, thus keeping the fan 2 stably stationary in the fresh air position. When the fan 2 rotates from the fresh air position to the exhaust position along the second rotation direction, the second baffle 2113 can engage with the first baffle 115 to stop the fan 2 from continuing to rotate, thus keeping the fan 2 stably stationary in the fresh air position. In this way, the rotation angle of the fan 2 is limited to a range of less than 360°, allowing it to rotate back and forth between the fresh air position and the exhaust position.

[0066] Specifically, the second baffle 2113 may engage with the first baffle 115 only when the fan 2 rotates from the exhaust position to the fresh air position along the first rotation direction. Alternatively, the second baffle 2113 may engage with the first baffle 115 only when the fan 2 rotates from the fresh air position to the exhaust position along the second rotation direction. Alternatively, the second baffle 2113 may engage with the first baffle 115 when the fan 2 rotates from the exhaust position to the fresh air position along the first rotation direction; and when the fan 2 rotates from the fresh air position to the exhaust position along the second rotation direction, the second baffle 2113 engages with the first baffle 115.

[0067] The specific positions and curvatures of the first baffle 115 and the second baffle 2113 are not limited and can be set reasonably as needed. For example, the first baffle 115 can be rotated symmetrically about the central axis of the first rotating shaft 2111 of the first support 21, with a curvature close to 360° (avoiding the shaft hole 111 and the bearing seat 112). The second baffle 2113 can be appropriately offset from the central axis of the first rotating shaft 2111, and the curvature of the second baffle 2113 can be close to 180° (avoiding the first rotating shaft 2111 and the second rotating shaft 2112), so that the second baffle 2113 can reciprocate about 180° within the cylinder 11, and can stop and cooperate with the first baffle 115 when the fan 2 rotates to the fresh air position and the exhaust position.

[0068] The first baffle 115 and the second baffle 2113 can also play a sealing role, which helps to reduce the airflow passing through the radial outside of the fan 2.

[0069] The outer wall of the first support 21 may also be provided with a sealing rib 2114. The sealing rib 2114 may be axially and circumferentially offset from the second baffle rib 2113. The sealing baffle rib may be located radially inside the first baffle rib 115 to seal part of the space between the first baffle rib 115 and the outer wall of the first support 21, thereby achieving a sealing effect.

[0070] like Figure 16 As shown, the outer wall of the first support 21 may also be provided with a sealing rib 2114. The sealing rib 2114 may be axially and circumferentially offset from the second baffle rib 2113. The sealing baffle rib may be located radially inside the first baffle rib 115 to seal part of the space between the first baffle rib 115 and the outer wall of the first support 21, thereby achieving a sealing effect.

[0071] In some exemplary embodiments, such as Figures 16 to 18 As shown, the first support 21 includes a first section 211 and a second section 212 connected sequentially along the axial direction of the fan 2. The inner wall of the first section 211 is cylindrical. The second section 212 includes a spherical part 2121 with an air passage notch 2123 and an end part 2122 connected to the spherical part 2121, the end part 2122 being located at the end of the spherical part 2121 away from the first section 211. The outer wall of the first section 211 smoothly connects to the outer wall of the spherical part 2121. The first section 211 is connected to the first switching member 31, and the impeller 22 is located inside the first section 211. The main body of the motor 23 is located inside the second section 212 and connected to the end part 2122.

[0072] Thus, the outer wall of the first segment 211 and the outer wall of the spherical part 2121 of the second segment 212 can be part of a sphere, which can be understood as an optimized hollowed-out design based on a hemisphere. This facilitates the flexible rotation of the fan 2 within the cylinder 11 under the drive of the first switching component 31, and helps reduce the risk of interference between the first support 21 and the cylinder 11. The inner wall of the first segment 211 adopts a cylindrical structure, which can provide a converging effect for the fan 2 and prevent air leakage.

[0073] The air passage notch 2123 ensures that airflow can pass smoothly through the second section 212. An air passage notch 2123 can also be provided on the end face 2122 to reduce wind resistance. The area of ​​the air passage notch 2123 can be set relatively large to reduce wind resistance. The end face 2122 and the motor 23 of the fan 2 can be fixedly connected by fasteners.

[0074] In one example, such as Figures 16 to 18 As shown, the spherical surface 2121 and the end surface 2122 are each provided with three air passage notches 2123, and the air passage notches 2123 of the spherical surface 2121 and the air passage notches 2123 of the end surface 2122 are connected as one unit. The motor 23 of the fan 2 is fixedly connected to the end surface by three screws.

[0075] In some exemplary embodiments, there are multiple fans 2, which are arranged sequentially along the axial direction of the housing 1, such as... Figure 22 and Figure 23 As shown.

[0076] When the fresh air system needs to be connected to a relatively long fresh air duct and the air resistance is high, multiple fans can be connected in series as needed to reduce air resistance and increase air volume.

[0077] The number of cylinders 11 can be equal to the number of fans 2 and correspond one-to-one. Adjacent cylinders 11 can be fixedly connected together by means of clamps 8, etc. Figure 22 and Figure 23 As shown. Alternatively, the number of cylinders 11 can be unequal to the number of fans 2, for example, the length of cylinder 11 can be longer, so that one cylinder 11 can be equipped with one or more fans 2.

[0078] The number of the first switching components 31 can be equal to the number of fans 2 and correspond one-to-one, such as Figure 22 and Figure 23 As shown. Alternatively, the number of first switching components 31 can be different from the number of fans 2. For example, one first switching component 31 can drive multiple fans 2 to rotate, which can be achieved by reasonably setting the transmission structure.

[0079] Of course, the number of wind turbines 2 can also be one.

[0080] In some exemplary embodiments, the fresh air device further includes: an air outlet fixing plate 4 and a first concentrator shroud 5, such as Figures 1 to 7 As shown.

[0081] The air vent mounting plate 4 is provided with an air passage 423, such as Figure 8 As shown, the air vent mounting plate 4 is configured to be fixedly connected to the mounting carrier with the air vent and to be connected to the air vent.

[0082] The first concentrator 5 has a large end (i.e., the end with a relatively large opening area) and a small end (i.e., the end with a relatively small opening area) arranged opposite to each other, such as Figure 10 As shown. The larger end of the first concentrator hood 5 is fixedly connected to the housing 1 and connected to the second air outlet 122. The smaller end of the first concentrator hood 5 is fixedly connected to the air outlet fixing plate 4 and connected to the air passage 423.

[0083] The air vent mounting plate 4 is mainly used to connect the fresh air unit to the mounting carrier. The mounting carrier may include, but is not limited to, air handling equipment (such as ducted air conditioners, air purifiers, wall-mounted air conditioners, cabinet air conditioners, humidifiers, dehumidifiers, etc.), walls with ventilation openings, and air ducts (connected in the middle of relatively long air ducts to provide pressurization).

[0084] The first concentrator hood 5 is mainly used for a smooth transition between the air duct 12 and the ventilation opening of the mounting carrier, avoiding abrupt changes in the cross-sectional area of ​​the airflow channel, and concentrating the airflow in the fresh air mode.

[0085] In some exemplary embodiments, the larger end of the first concentrator shroud 5 is fixedly connected to the housing 1 by a clamp 8. Of course, the connection method between the larger end of the first concentrator shroud 5 and the housing 1 is not limited to the clamp 8 connection method, but can also be a buckle 4221 connection, a fastener connection, etc.

[0086] In some exemplary embodiments, such as Figure 8 and Figure 9 As shown, the air outlet fixing plate 4 includes a connecting plate 41 and a docking portion 42 connected to the connecting plate 41. The docking portion 42 is provided with an air passage 423, and the connecting plate 41 is arranged circumferentially along the air passage 423. The connecting plate 41 is configured to be connected to the mounting carrier. The docking portion 42 is configured to be connected to the small end of the first concentrator hood 5.

[0087] The length of the air passage 423 can be relatively short, mainly serving as a pipe joint.

[0088] In some exemplary embodiments, the docking part 42 is provided with a snap-fit ​​part, and the first concentrator shroud 5 is provided with a snap-fit ​​mating part. The snap-fit ​​part is configured to snap into the snap-fit ​​mating part so that the air outlet fixing plate 4 and the first concentrator shroud 5 are snapped and fixed. The snap-fit ​​fixing method facilitates the loading and unloading operations between the air outlet fixing plate 4 and the first concentrator shroud 5.

[0089] Of course, the connection method between the docking part 42 and the first flow-concentrating cover 5 is not limited to the snap-fit ​​method, but can also be fastener connection, clamp 8 connection or other connection methods.

[0090] The connecting plate 41 and the mounting carrier can be fixedly connected by fasteners to ensure connection strength and reliability.

[0091] In some exemplary embodiments, such as Figure 8 and Figure 9 As shown, the mating portion 42 includes a first cylindrical portion 421 and a flange 422 arranged circumferentially along the first cylindrical portion 421. The flange 422 is located at the end of the first cylindrical portion 421 away from the connecting plate 41. The flange 422 is provided with a snap-fit ​​portion. The connecting plate 41 is provided with a connecting hole 411, and the flange 422 is provided with a clearance notch 4222 corresponding to the connecting hole 411.

[0092] The connecting hole 411 is configured to allow fasteners to pass through, so that the connecting plate 41 and the mounting carrier are fixedly connected by fasteners. The clearance notch 4222 is configured corresponding to the connecting hole 411, and its area can be larger than that of the connecting hole 411, so as to allow clearance during the installation and removal of fasteners, provide operating space for the installation and removal of fasteners, and avoid interference from the flange 422.

[0093] like Figure 8 and Figure 9 As shown, there can be multiple connecting holes 411, which are spaced apart circumferentially along the first cylindrical portion 421 to improve the connection reliability between the connecting plate 41 and the mounting carrier. The shape of the connecting plate 41 can be, but is not limited to, rectangular, circular, etc.

[0094] In some exemplary embodiments, one of the snap-fit ​​portion and the snap-fit ​​mating portion includes a latch 4221 (e.g., Figure 8 and Figure 9 (as shown), the other includes card slot 51 (as shown) Figure 10 (As shown). The slot 51 includes an insertion slot 511 and a limiting slot 512 that are circumferentially connected along the first cylindrical portion 421, as shown. Figure 10 As shown. The buckle 4221 is configured to be inserted into the insertion groove 511 along the axial direction of the first cylindrical portion 421, and then rotated circumferentially along the first cylindrical portion 421 to the limiting groove 512 and limited in the limiting groove 512.

[0095] In this way, the assembly between the air outlet fixing plate 4 and the small end of the first concentrator shroud 5 can be achieved by first axially inserting them together and then rotating them circumferentially. For disassembly, the plates can be rotated circumferentially and then pulled apart axially.

[0096] In some embodiments, such as Figure 13 As shown, the buckle 4221 includes a connecting part and a limiting part 4226. The limiting part 4226 is connected to the connecting part and forms an L-shaped structure with the connecting part. The width of the insertion groove 511 is greater than the width of the limiting part 4226, and the width of the limiting groove 512 is less than the width of the limiting part 4226, so that the insertion part 4225 and the limiting part 4226 can be inserted into the insertion groove 511 together, and the insertion part 4225 can be inserted into the limiting groove 512. However, the limiting part 4226 cannot move in or out of the limiting groove 512 along the axial direction of the first cylindrical part 421. Therefore, the limiting part 4226 can only rotate circumferentially to the limiting groove 512, that is, it is limited within the limiting groove 512 and cannot move axially, thus realizing the snap-fit ​​fixation between the air outlet fixing plate 4 and the first concentrator hood 5.

[0097] In some exemplary embodiments, the docking portion 42 is provided with an anti-rotation portion, and the first concentrator shroud 5 is provided with an anti-rotation mating portion. The anti-rotation portion and the anti-rotation mating portion cooperate to restrict the first concentrator shroud 5 from rotating circumferentially relative to the air outlet fixing plate 4.

[0098] This avoids relative rotation between the first concentrator shroud 5 and the air outlet fixing plate 4 during use, which would affect the reliability of the connection between the air outlet fixing plate 4 and the first concentrator shroud 5.

[0099] In some exemplary embodiments, the anti-rotation portion includes a folded edge 4223, such as... Figure 8 As shown, the folded edge 4223 is located at the radially outer end of the mating portion 42. The folded edge 4223 is provided with a first limiting hole 4224. The anti-rotation mating portion includes a second limiting hole 53, as shown... Figure 11 and Figure 12 As shown. Fasteners are inserted radially through the first limiting hole 4224 and the second limiting hole 53 of the first flow-concentrating hood 5 to restrict the circumferential rotation of the first flow-concentrating hood 5 relative to the air outlet fixing plate 4.

[0100] In this way, the folded edge 4223 is fixedly connected to the first flow-concentrating cover 5 by fasteners, and the connection direction of the fasteners is along the radial direction of the first flow-concentrating cover 5. Therefore, it can effectively prevent the first flow-concentrating cover 5 from rotating relative to the air outlet fixing plate 4, and effectively improve the connection reliability between the air outlet fixing plate 4 and the first flow-concentrating cover 5.

[0101] In some exemplary embodiments, the small end of the first concentrator shroud 5 is provided with an annular connecting protrusion 52, such as... Figure 10 and Figure 11 As shown. The slot 51 is provided on the end face of the connecting protrusion 52 facing the air outlet fixing plate 4, and the second limiting hole 53 is provided on the outer side wall of the connecting protrusion 52.

[0102] In some exemplary embodiments, the fresh air device further includes at least one of a second concentrator 6 and a filter assembly 7, such as Figures 1 to 7 As shown.

[0103] The second concentrator 6 has a large end (i.e., the end with a relatively larger opening area) and a small end (i.e., the end with a relatively smaller opening area) arranged opposite to each other, such as Figure 19 As shown. The large end of the second concentrator 6 is fixedly connected to the housing 1 and connected to the first air outlet 121. The small end of the second concentrator 6 is configured to connect to the outdoor space.

[0104] The air vent mounting plate 4 is mainly used to connect the fresh air unit to the mounting carrier. The mounting carrier may include, but is not limited to, air handling equipment (such as ducted air conditioners, air purifiers, wall-mounted air conditioners, cabinet air conditioners, humidifiers, dehumidifiers, etc.), walls with ventilation openings, and air ducts (connected in the middle of relatively long air ducts to provide pressurization).

[0105] The second concentrator 6 is mainly used for a smooth transition between the air duct 12 and the air outlet that needs to be connected at the other end, to avoid abrupt changes in the cross-sectional area of ​​the airflow channel, and to concentrate the airflow in the exhaust mode.

[0106] The second concentrator 6 can be connected to the outdoor space through a duct, and the small end of the second concentrator 6 can be connected to the duct.

[0107] In some exemplary embodiments, the fresh air device further includes a filter assembly 7, such as Figures 1 to 7 As shown. The filter assembly 7 is located in the airflow path of the air duct 12 and is configured to filter the airflow passing through it. The filter assembly 7 can filter the air flowing through it, thereby improving air quality. The filter assembly 7 can be fixed inside the cylinder 11 or outside the housing 1, for example, fixed inside the second converging hood 6.

[0108] Of course, the fresh air system may also exclude the filter assembly 7.

[0109] In some exemplary embodiments, the larger end of the second concentrator 6 is fixedly connected to the housing 1 by a clamp 8, such as... Figures 2 to 7 As shown.

[0110] Of course, the large end of the second concentrator 6 can also be fixedly connected to the shell 1 in other ways, such as by fasteners or buckles 4221.

[0111] In some exemplary embodiments, the fresh air device further includes a second switching element 32, such as Figures 1 to 7 As shown. The second switching element 32 is connected to the filter assembly 7 and is configured to drive the filter assembly 7 to rotate between the open and closed positions.

[0112] like Figure 4 and Figure 5 As shown, with the fresh air device in fresh air mode, the filter assembly 7 is in the closed position to filter the fresh air flow;

[0113] like Figure 6 and Figure 7 As shown, with the fresh air device in exhaust mode, the filter assembly 7 is in the open position to avoid the exhaust airflow.

[0114] In this way, in fresh air mode, the fresh air flow passes through filter assembly 7 and is filtered and purified by it, which helps improve the quality of fresh air entering the room. In exhaust mode, the exhaust air flow does not pass through filter assembly 7, which can reduce exhaust air resistance and make the exhaust air volume greater.

[0115] The second switching element 32 can be installed on the outer wall of the second cylindrical portion 61. The second switching element 32 can be, but is not limited to, a stepper motor.

[0116] Of course, the fresh air device may not include the second switching element 32, in which case the filter assembly 7 is a fixed filter assembly, which is in the off position in both fresh air mode and exhaust mode.

[0117] In some embodiments, in the closed position, the central axis of the filter assembly 7 is aligned with the axis of the air duct 12, such as... Figure 4 and Figure 5 As shown. In the open position, the central axis of the filter assembly 7 is perpendicular to the axis of the air duct 12, as... Figure 6 and Figure 7 As shown. Therefore, the rotation angle of the filter assembly 7 from the closed position to the open position is 90°, and the rotation angle from the open position to the closed position is 90°.

[0118] Of course, the rotation angle of the filter assembly 7 when switching between the closed and open positions is not limited to 90°, but can fluctuate within a certain range above and below 90°.

[0119] In some exemplary embodiments, the large end of the second concentrator 6 is provided with a second cylindrical portion 61, such as... Figure 19 As shown. The filter assembly 7 is rotatably mounted inside the second cylindrical portion 61.

[0120] like Figure 1 As shown, the filter assembly 7 includes a filter 71 and a second bracket 72. The second bracket 72 is rotatably mounted on the second cylindrical portion 61 and connected to the second switching member 32. The filter 71 is mounted on the second bracket 72.

[0121] The connection method between the second bracket 72 and the second cylindrical part 61 can be the same as or substantially the same as the connection method between the first bracket 21 and the first cylindrical part 421. Since the weight of the filter assembly 7 is generally less than that of the fan 2, a bearing seat 621 can be provided at the lower part of the second cylindrical part 61, without the need for a bearing.

[0122] The second cylindrical portion 61 can be configured in a stepped shape, and the filter assembly 7 can be disposed at the step of the second cylindrical portion 61, where the diameter change at the step can be relatively small.

[0123] In some exemplary embodiments, the second cylindrical portion 61 is provided with an inspection port 611, such as... Figure 1 and Figure 19 As shown. The filter assembly 7 is configured to allow the second cylindrical section 61 to enter and exit through the access port 611.

[0124] An inspection plate 62 is provided at the inspection port 611, such as Figure 1 , Figure 20 and Figure 21 As shown. The inspection plate 62 is detachably connected to the second cylindrical part 61.

[0125] The access port 611 facilitates quick replacement of the filter 71. The access plate 62 and the second cylindrical part 61 can be detachably connected, for example, by means of a snap fastener 4221 or other fasteners. The snap fastener connection method offers higher installation and removal efficiency.

[0126] The access port 611 has an arc of approximately 180°, which facilitates the smooth and rapid entry and exit of the filter assembly 7 into and out of the second cylindrical section 61. The bearing seat 621 can be mounted on the access plate 62.

[0127] Of course, the installation position of the filter assembly 7 is not limited to the second cylindrical part 61 of the second flow concentrator 6, but can also be the cylinder 11 or other structures on the airflow path.

[0128] In some exemplary embodiments, the inner wall of the second cylindrical portion 61 is provided with a third baffle (not shown in the figure) arranged circumferentially along the second cylindrical portion 61. The outer wall of the second bracket 72 is provided with a fourth baffle 721, such as... Figure 1 As shown. The third baffle is configured to engage with the fourth baffle 721 when the filter assembly 7 is rotated to the closed position, thereby limiting the continued rotation of the filter assembly 7.

[0129] The arrangement of the third and fourth baffles 721 can be referenced from the arrangement of the first baffle 115 and the second baffle 2113 mentioned above, and will not be repeated here.

[0130] The third and fourth baffles 721 can play a sealing role, which helps to reduce the airflow passing through the radial outside of the filter assembly 7.

[0131] This application also provides an air handling device, including any of the fresh air devices in the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be repeated here.

[0132] The types of air handling equipment are not limited and can include, but are not limited to: air conditioners (such as ducted air conditioners, wall-mounted air conditioners, cabinet air conditioners, central air conditioners, etc.), air purifiers, humidifiers, dehumidifiers, sterilizers, etc.

[0133] Of course, the fresh air device provided in this application embodiment is not limited to use in air handling equipment, and can also be used independently, such as by installing it on a wall with ventilation openings. Alternatively, the fresh air device can also be connected in the middle of an air duct to provide pressurization for other fresh air devices.

[0134] This application also provides a control method for use in any of the above embodiments of a fresh air device.

[0135] like Figure 24 As shown, the control methods include:

[0136] Step S202: Determine the target operating mode, which includes fresh air mode and exhaust mode;

[0137] Step S204: Based on the target working mode being fresh air mode, control the first switching element 31 to position the fan 2 in the fresh air position;

[0138] Step S206: Based on the target working mode being exhaust mode, control the first switching element 31 to position the fan 2 in the exhaust position.

[0139] Thus, the control method provided in this application embodiment enables the fresh air device to have both a fresh air mode and an exhaust mode. The fan 2 and duct 12 used in the fresh air mode are the same as those used in the exhaust mode. The airflow direction can be changed simply by adjusting the position of the fan 2 through the first switching component 31, thereby achieving the switching of the working mode. There is no need to set up separate fans 2 and ducts 12 for the fresh air mode and exhaust mode, which helps to reduce the number of fans 2, simplify the structure of the duct 12, reduce the size of the fresh air device, and reduce the cost of the fresh air device.

[0140] The method of determining the target working mode is not limited. It can be determined by a remote control, operation panel, control terminal (such as a mobile phone, computer, wristband, or other terminal device APP), or by the user's voice, or by the indoor air quality test results.

[0141] In some exemplary embodiments, controlling the first switching element 31 to position the fan 2 in the fresh air position includes:

[0142] Since the fan 2 is located in the fresh air position, the first switching element 31 is controlled to maintain the current state, so that the fan 2 remains in the fresh air position;

[0143] Since the fan 2 is not in the fresh air position, the first switching element 31 is controlled to rotate the fan 2 to the fresh air position.

[0144] Based on the fact that the fan 2 is in the exhaust position, the first switching element 31 is controlled to position the fan 2 in the exhaust position, including:

[0145] Since the fan 2 is in the exhaust position, the first switching element 31 is controlled to maintain the current state, so that the fan 2 is kept in the exhaust position;

[0146] Since the fan 2 is not in the exhaust position, the first switching element 31 is controlled to rotate the fan 2 to the exhaust position.

[0147] In some exemplary embodiments, one of the fresh air location and the exhaust air location is set as the initial position of the fan 2, and the control method further includes:

[0148] In response to the power-on command, determine whether fan 2 is in its initial position;

[0149] Based on the initial position of fan 2, the steps for determining the target operating mode are executed;

[0150] Since the fan 2 is not in its initial position, the first switching element 31 is controlled to rotate the fan 2 to its initial position.

[0151] In other words, before determining the target operating mode, a reset test is performed on fan 2. When fan 2 is in its initial position, the determination of the target operating mode can proceed normally. If fan 2 is not in its initial position, it is reset first, and then the target operating mode is determined. This ensures that the rotation angle of fan 2 is fixed after the target operating mode is determined, which simplifies the electrical control program of the first switching component 31 and also improves the accuracy of the fan 2's position in the target operating mode.

[0152] In some exemplary embodiments, the control method further includes: in response to a shutdown command, controlling the first switching element 31 to reset the fan 2 to its initial position.

[0153] This ensures that when the fresh air system is used again, fan 2 is in the initial position, making it easier to quickly enter the target working mode.

[0154] Furthermore, the reset after the target working mode ends and the reset detection before the target working mode begins can play a double insurance role, which helps to ensure that the fresh air device starts from the initial position when entering the target working mode.

[0155] The shutdown command can be sent by the user or generated automatically when there are no other operating requirements after the target working mode ends, meaning that the system can automatically shut down after the target working mode ends.

[0156] In some exemplary embodiments, the fresh air device further includes a filter assembly 7 and a second switching element 32, the second switching element 32 being configured to drive the filter assembly 7 to rotate between an open position and a closed position, and the control method further includes:

[0157] Based on the target working mode being fresh air mode, the second switching element 32 is controlled to keep the filter assembly 7 in the closed position;

[0158] Based on the target operating mode being exhaust mode, the second switching element 32 is controlled to position the filter assembly 7 in the open position.

[0159] In this way, in fresh air mode, the fresh air flow passes through filter assembly 7 and is filtered and purified by it, which helps improve the quality of fresh air entering the room. In exhaust mode, the exhaust air flow does not pass through filter assembly 7, which can reduce exhaust air resistance and make the exhaust air volume greater.

[0160] In some exemplary embodiments, controlling the second switching element 32 to place the filter assembly 7 in the off position includes:

[0161] Since the filter assembly 7 is in the closed position, the second switching element 32 is controlled to maintain the current state, so that the filter assembly 7 is kept in the closed position;

[0162] Since the filter assembly 7 is not in the closed position, the second switching element 32 is controlled to rotate the filter assembly 7 to the closed position.

[0163] Based on the filter assembly 7 being in the open position, the second switching element 32 is controlled to keep the filter assembly 7 in the open position, including:

[0164] Since the filter assembly 7 is in the open position, the second switching element 32 is controlled to maintain the current state, so that the filter assembly 7 remains in the open position;

[0165] Since the filter assembly 7 is not in the open position, the second switching element 32 is controlled to rotate the filter assembly 7 to the open position.

[0166] In some exemplary embodiments, one of the open position and the closed position is set as the initial position of the filter assembly 7, and the control method further includes:

[0167] In response to the power-on command, determine whether the filter assembly 7 is in its initial position;

[0168] Based on the filter assembly 7 being in its initial position, the step of determining the target operating mode is performed;

[0169] Since the filter assembly 7 is not in its initial position, the second switching element 32 is controlled to rotate the filter assembly 7 to its initial position.

[0170] In other words, before determining the target operating mode, the filter assembly 7 is reset. When the filter assembly 7 is in its initial position, the determination of the target operating mode can proceed normally. If the filter assembly 7 is not in its initial position, it is reset first, and then the target operating mode is determined. This ensures that the rotation angle of the filter assembly 7 is fixed after the target operating mode is determined, which simplifies the electronic control program of the first switching element 31 and also improves the accuracy of the position of the filter assembly 7 in the target operating mode.

[0171] In some exemplary embodiments, the control method further includes:

[0172] In response to the shutdown command, the second switching element 32 is controlled to reset the filter assembly 7 to its initial position.

[0173] This helps ensure that the filter assembly 7 is in its initial position when the fresh air unit is used next time, making it easy to quickly enter the target working mode.

[0174] Furthermore, the reset after the target working mode ends and the reset detection before the target working mode begins can play a double insurance role, which helps to ensure that the fresh air device starts from the initial position when entering the target working mode.

[0175] In some exemplary embodiments, the control method further includes:

[0176] Based on the principle that the fresh air unit is powered on after a power outage, the system controls the fresh air unit to continue operating in the working mode before the power outage.

[0177] In other words, the fresh air system has a power outage memory function, which can remember the working mode and progress before the power outage. After the power is restored, it can continue to operate in the working mode before the power outage without the user having to operate it again, which helps to improve the user experience.

[0178] In one embodiment, the fresh air device includes: an air outlet fixing plate 4, a first concentrator 5, a cylinder 11, a fan 2, a first switching element 31, a filter assembly 7, and a second concentrator 6. The fan 2 includes a first bracket 21, an impeller 22, and a motor 23. The filter assembly 7 includes a filter 71 and a second bracket 72.

[0179] The air vent mounting plate 4 can be fixed to the fresh air inlet of the ducted air conditioner or directly fixed to the fresh air inlet of the wall. The air vent mounting plate 4 has four connecting holes 411, four clearance notches 4222, one first limiting hole 4224, and three clips 4221. The first concentrator shroud 5 has three slots 51 and one second limiting hole 53. The first switching component 31 and the second switching component 32 are both stepper motors.

[0180] The cylinder body 11 primarily serves to fix the fan 2 and provide airflow guidance. The upper part of the cylinder body 11 has a shaft hole 111, and the lower part has a bearing seat 112, in which a bearing is placed. A retaining ring is designed in the middle of the cylinder body 11 for limiting movement. The cylinder body 11 includes two separate sub-shells 113, which are fixed by buckles 4221 on both sides, facilitating the installation of the first support 21 of the fan 2. The cylinder body 11 is fixed to the first concentrator shroud 5 by clamps 8.

[0181] The fan 2 is fixed on the first bracket 21. A portion of the first bracket 21 is optimized by hollowing out a hemispherical shape, with a spherical outer wall, allowing it to rotate flexibly within the cylinder 11 driven by the stepper motor. The part that mates with the impeller 22 is cylindrical, which provides a concentrating effect for the fan 2 and prevents air leakage.

[0182] The second concentrator 6 can be fixed to the cylinder 11 by clamps 8. The lower part of the second concentrator 6 is provided with an inspection port 611, and the filter screen 71 can be quickly replaced by removing the inspection plate 62.

[0183] During installation, first fix the air outlet fixing plate 4 to the target air outlet with four screws, then fix the module composed of the remaining components to the air outlet fixing plate 4 with clips 4221, and finally drive the limiting screws through the first limiting hole 4224 and the second limiting hole 53 to prevent circumferential rotation.

[0184] In fresh air mode, fan 2 is in the fresh air position, filter assembly 7 is in the closed position, and after the airflow enters the fresh air device, the outside air passes through filter 71 and is introduced into the room by fan 2 after being filtered by filter 71.

[0185] In exhaust mode, fan 2 is in the exhaust position, filter assembly 7 is in the open position, and indoor air enters the fresh air unit and is directly exhausted outdoors without being filtered by filter 71. The advantage of this is that it reduces the wind resistance of the exhaust and allows for a larger exhaust volume.

[0186] When the fresh air system requires a long fresh air duct and the air resistance is high, multiple fan 2 cylinder 11 modules (i.e., the module formed by fan 2, cylinder 11 and first switching component 31) can be connected in series as needed to reduce air resistance and increase air volume.

[0187] By default, fan 2 is in the fresh air position (the initial position of fan 2), and filter assembly 7 is in the closed position (the initial position of filter assembly 7). The working process of this fresh air unit is as follows: Upon startup, the positions of fan 2 and filter assembly 7 are detected. If fan 2 is detected as being in the fresh air position and filter assembly 7 as being in the closed position, the next step can proceed normally; otherwise, a reset mode is entered to ensure that fan 2 is in the fresh air position and filter assembly 7 is in the closed position. When the fresh air mode is selected, the fan bracket (i.e., the first bracket 21) and filter 71 bracket (i.e., the second bracket 72) do not move. When the exhaust mode is selected, the fan bracket rotates 180° and the filter 71 bracket rotates 90°, achieving reverse airflow from fan 2 and keeping filter assembly 7 in the open state, thereby reducing exhaust air resistance. If a power outage occurs during operation and the unit is restarted, the program will proceed according to the last mode before the power outage. When the unit is shut down, the fresh air unit resets to its factory state, returning the fan bracket and filter 71 bracket to their initial positions.

[0188] In some other embodiments, the fresh air device does not include the filter assembly 7 and the second switching element 32, or the fresh air device includes the filter assembly 7 but does not include the second switching element 32. Compared to the aforementioned scheme, the control program omits the content related to the rotation of the filter 71 bracket, while the rest of the program can remain the same.

[0189] This application also provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, it implements the steps of any of the control methods described in the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be repeated here.

[0190] The processor may be an integrated circuit chip with signal processing capabilities. The aforementioned processor can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application-Specific Integrated Circuit (ASIC), an On-Premises Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor.

[0191] This application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, it implements the steps of the control method as described in any of the above embodiments, and thus has all the above-mentioned beneficial effects, which will not be repeated here.

[0192] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0193] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0194] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0195] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0196] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0197] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

[0198] In any one or more of the exemplary embodiments described above, the described functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored as one or more instructions or code on or transmitted via a computer-readable medium and executed by a hardware-based processing unit. The computer-readable medium may comprise a computer-readable storage medium corresponding to a tangible medium such as a data storage medium, or a communication medium comprising any medium facilitating the transfer of a computer program from one place to another, for example, according to a communication protocol. In this manner, a computer-readable medium may generally correspond to a non-transitory tangible computer-readable storage medium or a communication medium such as a signal or carrier wave. The data storage medium may be any available medium accessible by one or more computers or one or more processors to retrieve instructions, code, and / or data structures for implementing the techniques described in this disclosure. Computer program products may comprise computer-readable media.

[0199] For example, and not as a limitation, such computer-readable storage media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, flash memory, or any other medium that can be used to store desired program code in the form of instructions or data structures and is accessible by a computer. Furthermore, any connection may also be referred to as a computer-readable medium. For example, if instructions are transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. However, it should be understood that computer-readable storage media and data storage media do not include connections, carrier waves, signals, or other transient media, but rather refer to non-transient tangible storage media. As used herein, disks and optical discs include compact optical discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, or Blu-ray discs, where disks typically reproduce data magnetically, while optical discs use lasers to reproduce data optically. The above combinations should also be included within the scope of computer-readable media.

[0200] For example, instructions can be executed by one or more processors, such as one or more digital signal processors (DSPs), general-purpose microprocessors, application-specific integrated circuits (ASICs), field-programmable logic arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Therefore, the term "processor" as used herein can refer to any of the above-described structures or any other structures suitable for implementing the techniques described herein. Additionally, in some aspects, the functionality described herein can be provided within dedicated hardware and / or software modules configured for encoding and decoding, or incorporated into combined codecs. Furthermore, the techniques can be fully implemented in one or more circuit or logic elements.

[0201] The technical solutions of the embodiments of this disclosure can be implemented in a wide variety of devices or equipment, including wireless mobile phones, integrated circuits (ICs), or a set of ICs (e.g., chipsets). Various components, modules, or units are described in the embodiments of this disclosure to emphasize functional aspects of a device configured to perform the described techniques, but they do not necessarily need to be implemented through different hardware units. Rather, as described above, the various units can be combined in codec hardware units or provided by a collection of interoperable hardware units (including one or more processors as described above) combined with suitable software and / or firmware.

Claims

1. A fresh air device, characterized in that The application relates to a new air device, which comprises a shell, a fan, a first switching part and a second switching part. The shell is internally provided with an air duct, the two ends of the air duct are respectively provided with a first air passing opening and a second air passing opening, and the fan is rotatably installed in the air duct and arranged to drive gas to flow through the air duct. The first switching part is connected with the fan and arranged to drive the fan to rotate between a new air position and an exhaust air position, so as to switch the new air device between a new air mode and an exhaust air mode. When the new air device is in the new air mode, the fan is located in the new air position to drive gas to flow from the first air passing opening to the second air passing opening. When the new air device is in the exhaust air mode, the fan is located in the exhaust air position to drive gas to flow from the second air passing opening to the first air passing opening. The shell comprises a cylinder body, the fan comprises a first support, a wind wheel and a motor, the first support is rotatably installed on the cylinder body and connected with the first switching part, the wind wheel and the motor are installed on the first support, and the motor is connected with the wind wheel to drive the wind wheel to rotate. The cylinder body is provided with an axis hole and a bearing seat arranged oppositely, the bearing seat is located on the lower side of the axis hole, the first support is correspondingly provided with a first rotating shaft and a second rotating shaft, the first rotating shaft is inserted into the axis hole and connected with the first switching part, and the second rotating shaft is inserted into the bearing seat.

2. The fresh air device according to claim 1, characterized in that, The cylinder body comprises a plurality of sub-shells arranged in a split mode, the plurality of sub-shells are fixedly connected along the circumferential direction of the cylinder body to form a cylindrical structure, and / or The inner side wall of the cylinder body is provided with a first blocking rib arranged along the circumferential direction of the cylinder body, the outer side wall of the first support is provided with a second blocking rib, the first blocking rib is arranged to be in abutting cooperation with the second blocking rib when the fan rotates to the new air position in a first rotating direction and / or rotates to the exhaust air position in a second rotating direction, so as to limit the continuous rotation of the fan, and the second rotating direction is the reverse direction of the first rotating direction; and / or 3. The fresh air device according to claim 2, characterized in that, The first support comprises a first section and a second section connected in sequence along the axial direction of the fan, the inner side wall of the first section is in a cylindrical shape, the second section comprises a spherical surface part provided with an air passing gap and an end surface part connected with the spherical surface part, the end surface part is located at one end of the spherical surface part away from the first section, the outer side wall of the first section is smoothly connected with the outer side wall of the spherical surface part, the first section is connected with the first switching part, the wind wheel is located in the first section, and the main body of the motor is located in the second section and connected with the end surface part.

4. The fresh air device according to claim 3, characterized in that, The number of the fan is multiple, and the multiple fans are arranged in sequence along the axial direction of the shell. The application further comprises a wind port fixing plate and a first flow converging cover. The wind port fixing plate is provided with an air passing channel, the wind port fixing plate is arranged to be fixedly connected with a mounting carrier provided with a ventilation port and in butt joint communication with the ventilation port.

5. The fresh air device according to any one of claims 1 to 4, characterized in that, The first flow converging cover has a large end and a small end arranged oppositely, the large end of the first flow converging cover is fixedly connected with the shell and in butt joint communication with the second air passing opening, and the small end of the first flow converging cover is fixedly connected with the wind port fixing plate and in butt joint communication with the air passing channel.

6. The fresh air device according to any one of claims 1 to 4, characterized in that, ​ ​ ​ ​ 7. The fresh air device according to claim 6, characterized in that, The air port fixing plate comprises a connecting plate and a butt joint portion connected with the connecting plate, the butt joint portion is provided with the air passing channel, the connecting plate is arranged along the circumference of the air passing channel, and the connecting plate is arranged to be connected with the mounting carrier; the butt joint portion is arranged to be connected with the small end of the first flow cone.

8. The fresh air device according to claim 7, characterized in that, The butt joint portion is provided with a clamping portion, the first flow cone is provided with a clamping matching portion, and the clamping portion is arranged to be clamped with the clamping matching portion to clamping fix the air port fixing plate with the first flow cone.

9. The fresh air device according to claim 8, characterized in that, The butt joint portion comprises a first cylindrical portion and a turned edge arranged along the circumference of the first cylindrical portion, the turned edge is located at one end of the first cylindrical portion away from the connecting plate, the turned edge is provided with the clamping portion; the connecting plate is provided with a connecting hole, and the turned edge is provided with an avoiding gap corresponding to the connecting hole; and / or One of the clamping portion and the clamping matching portion comprises a buckle, and the other comprises a clamping groove, the clamping groove comprises an insertion slot and a limiting slot communicated along the circumference of the first cylindrical portion, and the buckle is arranged to be inserted into the insertion slot along the axial direction of the first cylindrical portion, and then rotated to the limiting slot along the circumference of the first cylindrical portion and limited in the limiting slot; and / or The butt joint portion is provided with a rotation stopping portion, the first flow cone is provided with a rotation stopping matching portion, and the rotation stopping portion is matched with the rotation stopping matching portion to limit the circumferential rotation of the first flow cone relative to the air port fixing plate.

10. The fresh air device according to any one of claims 1 to 4, characterized in that, The fresh air device further comprises at least one of a second flow cone and a filter screen assembly; The second flow cone has a large end and a small end arranged oppositely, the large end of the second flow cone is fixedly connected with the shell and communicated with the first air passing port in a butt joint manner, and the small end of the second flow cone is arranged to be capable of communicating with an outdoor space; The filter screen assembly is arranged on the airflow path of the air duct and arranged to filter the airflow passing through the filter screen assembly.

11. The fresh air device of claim 10, wherein, The fresh air device further comprises a second switching member, the second switching member is connected with the filter screen assembly and arranged to drive the filter screen assembly to rotate between an open position and a closed position; Based on that the fresh air device is in the fresh air mode, the filter screen assembly is located at the closed position to filter the fresh air flow; Based on that the fresh air device is in the exhaust air mode, the filter screen assembly is located at the open position to avoid the exhaust air flow.

12. The fresh air device of claim 11, wherein, The large end of the second flow cone is provided with a second cylindrical portion, and the filter screen assembly is rotatably installed in the second cylindrical portion; The filter screen assembly comprises a filter screen and a second support, the second support is rotatably installed in the second cylindrical portion and connected with the second switching member, and the filter screen is installed on the second support.

13. The fresh air device of claim 12, wherein, The second cylindrical portion is provided with an inspection opening, and the filter screen assembly is arranged to be capable of entering and exiting the second cylindrical portion through the inspection opening; The inspection opening is provided with an inspection plate, and the inspection plate is detachably connected with the second cylindrical portion.

14. An air treatment device, characterized in that The fresh air device comprises the fresh air device according to any one of claims 1 to 13.

15. A control method characterized by, The control method is applied to the fresh air device according to any one of claims 1 to 13, and the control method comprises: determining a target working mode, the target working mode comprising a fresh air mode and an exhaust air mode; based on the target working mode being the fresh air mode, controlling the first switching member to enable the fan to be located at the fresh air position; based on the target working mode being the exhaust air mode, controlling the first switching member to enable the fan to be located at the exhaust air position.

16. The control method according to claim 15, characterized by One of the fresh air position and the exhaust air position is set as an initial position of the fan, and the control method further comprises: in response to a start-up instruction, determining whether the fan is located at the initial position of the fan; based on the fan being located at the initial position of the fan, performing the step of determining the target working mode; based on the fan not being located at the initial position of the fan, controlling the first switching member to enable the fan to rotate to the initial position of the fan; and / or in response to a shut-down instruction, controlling the first switching member to enable the fan to reset to the initial position of the fan.

17. The control method according to claim 15 or 16, characterized by, The fresh air device further comprises a filter screen assembly and a second switching member configured to drive the filter screen assembly to rotate between an open position and a closed position, and the control method further comprises: based on the target working mode being the fresh air mode, controlling the second switching member to enable the filter screen assembly to be located at the closed position; based on the target working mode being the exhaust air mode, controlling the second switching member to enable the filter screen assembly to be located at the open position.

18. The control method according to claim 17, characterized by, One of the open position and the closed position is set as an initial position of the filter screen assembly, and the control method further comprises: in response to a start-up instruction, determining whether the filter screen assembly is located at the initial position of the filter screen assembly; based on the filter screen assembly being located at the initial position of the filter screen assembly, performing the step of determining the target working mode; based on the filter screen assembly not being located at the initial position of the filter screen assembly, controlling the second switching member to enable the filter screen assembly to rotate to the initial position of the filter screen assembly; and / or in response to a shut-down instruction, controlling the second switching member to enable the filter screen assembly to reset to the initial position of the filter screen assembly.

19. The control method according to claim 15 or 16, characterized by, Further comprising: based on the fresh air device being powered on after being powered off, controlling the fresh air device to continue operating according to the working mode before being powered off.

20. A control device characterized by comprising: comprise a processor and a memory storing a computer program, and the processor implements the steps of the control method according to any one of claims 15 to 19 when executing the computer program.

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