Fresh air device and air treatment equipment

Abstract

The utility model discloses a fresh air device and air treatment equipment. 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, but is not limited to, the field of air treatment technology, and specifically refers to a fresh air device and an air treatment equipment. Background Art

[0002] In the related art, a fresh air device with both a fresh air mode and an exhaust air mode needs to be equipped with two fans. One fan is used to supply fresh air, and the other fan is used to discharge polluted air. This structure results in a large size, high cost, and complex duct structure of the fresh air device. Summary of the Utility Model

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

[0004] An embodiment of the present application provides a fresh air device, including: a housing, a duct is provided inside the housing, and a first air inlet and a second air inlet are respectively provided at both ends of the duct; a fan, rotatably installed in the duct, configured to drive gas to flow through the duct; and a first switching member, connected to the fan, configured to drive the fan to rotate between a fresh air position and an exhaust air position, so that the fresh air device can be switched between a fresh air mode and an exhaust air 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 inlet to the second air inlet; based on the fresh air device being in the exhaust air mode, the fan is located at the exhaust air position to drive gas to flow from the second air inlet to the first air inlet.

[0005] In this way, the fan and the duct used in the fresh air mode of the fresh air device are the same as those used in the exhaust air mode. Only by adjusting the position of the fan through the first switching member can the direction of the air flow be changed, and then the switching of the working mode can be realized, without separately setting fans and ducts for the fresh air mode and the exhaust air mode. Therefore, it is beneficial to reduce the number of fans, simplify the structure of the duct, reduce the size of the fresh air device, and lower the cost of the fresh air device.

[0006] An embodiment of the present application further provides an air treatment equipment, including the fresh air device according to any one of the above embodiments. Description of the Drawings

[0007] Figure 1 is an exploded structural schematic diagram of a fresh air device provided by some embodiments of the present application;

[0008] Figure 2 is Figure 1 a perspective three-dimensional structural schematic diagram of the assembled fresh air device shown from one angle;

[0009] Figure 3 is Figure 2 a three-dimensional structural schematic diagram of another perspective of the fresh air device shown;

[0010] Figure 4 is Figure 2 a top-view structural schematic diagram of the fresh air device shown in the fresh air mode;

[0011] Figure 5 is Figure 4 a sectional structural schematic diagram of the fresh air device shown in the A-A direction;

[0012] Figure 6 is Figure 2 a top-view structural schematic diagram of the fresh air device shown in the exhaust mode;

[0013] Figure 7 is Figure 6 a sectional structural schematic diagram of the fresh air device shown in the B-B direction;

[0014] Figure 8 a three-dimensional structural schematic diagram of the air outlet fixing plate provided by some embodiments of the present application;

[0015] Figure 9 is Figure 8 a left-view structural schematic diagram of the air outlet fixing plate shown;

[0016] Figure 10 a three-dimensional structural schematic diagram of the first air collecting cover provided by some embodiments of the present application;

[0017] Figure 11 is Figure 10 a rear-view structural schematic diagram of the first air collecting cover shown;

[0018] Figure 12 is Figure 8 the assembly structural schematic diagram of the air outlet fixing plate shown and Figure 10 the first air collecting cover shown;

[0019] Figure 13 is Figure 12 a half-sectional schematic diagram of the structure shown;

[0020] Figure 14 a three-dimensional structural schematic diagram of one perspective of the cylinder body provided by some embodiments of the present application;

[0021] Figure 15 is Figure 14 a three-dimensional structural schematic diagram of another perspective of the cylinder body shown;

[0022] Figure 16 a three-dimensional structural schematic diagram of the fan provided by some embodiments of the present application;

[0023] Figure 17 is Figure 16 the left - view structural schematic diagram of the blower shown;

[0024] Figure 18 is Figure 17 the sectional - view structural schematic diagram of the blower in the C - C direction shown;

[0025] Figure 19 the structural schematic diagram of the second flow - concentrating cover provided by some embodiments of the present application;

[0026] Figure 20 the left - view structural schematic diagram of the inspection plate provided by some embodiments of the present application;

[0027] Figure 21 is Figure 20 the front - view structural schematic diagram of the inspection plate shown;

[0028] Figure 22 the structural schematic diagram of the fresh - air device provided by some embodiments of the present application;

[0029] Figure 23 is Figure 22 the sectional - view structural schematic diagram of the fresh - air device in the D - D direction shown;

[0030] Figure 24 the flow - chart schematic diagram of the control method provided by some embodiments of the present application.

[0031] In the drawings, the list of components represented by each reference numeral is as follows:

[0032] 1 housing, 11 cylinder, 111 shaft hole, 112 bearing seat, 113 sub - shell, 115 first rib, 12 air duct, 121 first air - passing opening, 122 second air - passing opening;

[0033] 2 blower, 21 first bracket, 211 first section, 2111 first rotating shaft, 2112 second rotating shaft, 2113 second rib, 2114 sealing rib, 212 second section, 2121 spherical surface part, 2122 end surface part, 2123 air - passing notch, 22 wind wheel, 23 motor;

[0034] 31 first switching member, 32 second switching member;

[0035] 4 air - outlet fixing plate, 41 connecting plate, 411 connecting hole, 42 docking part, 421 first cylindrical part, 422 flanging, 4221 buckle, 4222 avoiding notch, 4223 folding edge, 4224 first limiting hole, 4225 inserting part, 4226 limiting part, 423 air - passing channel;

[0036] 5 first flow - concentrating cover, 51 card slot, 511 inserting slot, 512 limiting slot, 52 connecting protrusion, 53 second limiting hole;

[0037] 6 Second air collecting hood, 61 Second cylindrical part, 611 Inspection opening, 62 Inspection plate, 621 Shaft seat;

[0038] 7 Filter screen assembly, 71 Filter screen, 72 Second bracket, 721 Fourth retaining rib;

[0039] 8 Clamp. Detailed implementation manners

[0040] The principles and features of the present application will be described below with reference to the accompanying drawings. The examples given are only for explaining the present application and are not intended to limit the scope of the present application.

[0041] As Figures 1 to 7 shown, an embodiment of the present application provides a fresh air device, including: a housing 1, a fan 2, and a first switching member 31.

[0042] Specifically, an air duct 12 is provided inside the housing 1. A first air inlet 121 and a second air inlet 122 are respectively provided at both ends of the air duct 12.

[0043] The fan 2 is rotatably installed inside the air duct 12 and is configured to drive gas to flow through the air duct 12.

[0044] The first switching member 31 is connected to the fan 2 and is configured to drive the fan 2 to rotate between a fresh air position and an exhaust position, so that the fresh air device can be switched between a fresh air mode and an exhaust mode. The fan 2 can be a unidirectional rotation fan 2. By rotating the fan 2, the position of the fan 2 is changed to achieve reverse air supply, rather than changing the rotation direction of the impeller 22 of the fan 2 itself to change the direction of the air flow. The exhaust function can be realized without changing the structure of the air duct.

[0045] Among them, based on the fresh air device being in the fresh air mode, the fan 2 is located at the fresh air position to drive gas to flow from the first air inlet 121 to the second air inlet 122, as Figure 4 and Figure 5 shown.

[0046] Based on the fresh air device being in the exhaust mode, the fan 2 is located at the exhaust position to drive gas to flow from the second air inlet 122 to the first air inlet 121, as Figure 6 and Figure 7 shown.

[0047] In this way, the fan 2 and the air duct 12 used in the fresh air mode of the fresh air device are the same as those used in the exhaust mode. Only by adjusting the position of the fan 2 through the first switching member 31 can the direction of the air flow be changed, and thus the switching of the working mode can be realized, without separately setting the fan 2 and the air duct 12 for the fresh air mode and the exhaust mode. Therefore, it is beneficial to reduce the number of fans 2, simplify the structure of the air duct 12, reduce the size of the fresh air device, and reduce the cost of the fresh air device.

[0048] In some exemplary embodiments, when rotating from the fresh air position to the exhaust air position, the first switching member 31 drives the fan 2 to rotate 180°. When rotating from the exhaust air position to the fresh air position, the first switching member 31 drives the fan 2 to rotate 180°.

[0049] Of course, the rotation angle of the fan 2 when switching between the fresh air position and the exhaust air position is not limited to 180°, and can also fluctuate within a certain range above and below 180°.

[0050] In some exemplary embodiments, the housing 1 includes a cylindrical body 11, as Figure 14 and Figure 15 shown. The fan 2 includes a first bracket 21, a wind wheel 22 and a motor 23, as Figures 16 to 18 shown. The first bracket 21 is rotatably mounted on the cylindrical body 11 and connected to the first switching member 31. The wind wheel 22 and the motor 23 are mounted on the first bracket 21, and the motor 23 is connected to the wind wheel 22 to drive the wind wheel 22 to rotate.

[0051] The cylindrical body 11 mainly functions to fix the fan 2 and provide flow guidance.

[0052] Among them, the cylindrical body 11 can be, but is not limited to, a cylindrical structure with openings at both ends, such as Figure 14 and Figure 15 shown. The first switching member 31 can be, but is not limited to, a stepper motor. The first switching member 31 can be mounted on the outer side wall of the cylindrical body 11.

[0053] In some exemplary embodiments, such as Figure 14 and Figure 15 shown, the cylindrical body 11 is provided with an axially aligned hole 111 and a bearing seat 112 which are oppositely arranged, and the bearing seat 112 is located below the axially aligned hole 111. The first bracket 21 is correspondingly provided with a first rotating shaft 2111 and a second rotating shaft 2112. The first rotating shaft 2111 is inserted into the axially aligned hole 111 and connected to the first switching member 31, and the second rotating shaft 2112 is inserted into the bearing seat 112.

[0054] Considering that it is easier to support the rotation of the first bracket 21 with bearings when the fan 2 is relatively heavy, a bearing seat 112 is provided at the lower part of the cylindrical body 11, and an axially aligned hole 111 is provided at the upper part. Bearings can be placed in the bearing seat 112 to support the second rotating shaft 2112.

[0055] Of course, the bearing seat 112 can also be cancelled, and axially aligned holes 111 are provided at both the upper and lower parts of the cylindrical body 11. Alternatively, axially aligned holes 111 or bearing seats 112 can be provided on the first bracket 21, and the rotating shafts are provided on the cylindrical body 11.

[0056] In some exemplary embodiments, such as Figure 14As shown, the cylinder body 11 includes a plurality of sub - shells 113 that are separately arranged, and the plurality of sub - shells 113 are spliced and fixed along the circumferential direction of the cylinder body 11 to form a cylindrical structure.

[0057] This is beneficial to reducing the difficulty of loading and unloading between the fan 2 and the cylinder body 11, thereby facilitating the improvement of the assembly and disassembly efficiency. As for the connection method between adjacent sub - shells 113, there is no limitation, and it can be a connection by fasteners, a snap - connection 4221, etc.

[0058] In one example, as Figure 14 shown, the cylinder body 11 includes two sub - shells 113 that are separately arranged up and down, and the two sub - shells 113 are fixedly connected by a snap - connection 4221. The first bracket 21 of the fan 2 can be first connected to one of the sub - shells 113, and then the other sub - shell 113 is covered, and the two sub - shells 113 are fixedly connected.

[0059] In some exemplary embodiments, as Figure 14 and Figure 15 shown, the inner side wall of the cylinder body 11 is provided with a first retaining rib 115 arranged along the circumferential direction of the cylinder body 11. The outer side wall of the first bracket 21 is provided with a second retaining rib 2113, as Figure 16 shown. The first retaining rib 115 is arranged to abut against the second retaining rib 2113 when the fan 2 rotates to the fresh - air position along the first rotation direction and / or rotates to the exhaust - air position along the second rotation direction, so as to limit the continuous rotation of the fan 2. The second rotation direction is the reverse direction of the first rotation direction.

[0060] In other words, when the fan 2 rotates from the exhaust - air position to the fresh - air position along the first rotation direction, the second retaining rib 2113 can abut against the first retaining rib 115 to limit the continuous rotation of the fan 2, so that the fan 2 stably stays at the fresh - air position. When the fan 2 rotates from the fresh - air position to the exhaust - air position along the second rotation direction, the second retaining rib 2113 can abut against the first retaining rib 115 to limit the continuous rotation of the fan 2, so that the fan 2 stably stays at the fresh - air position. In this way, the rotation angle of the fan 2 is limited within a range less than 360°, and it can rotate back and forth between the fresh - air position and the exhaust - air position.

[0061] Among them, it can be that only when the fan 2 rotates from the exhaust - air position to the fresh - air position along the first rotation direction, the second retaining rib 2113 abuts against the first retaining rib 115. Or it can be that only when the fan 2 rotates from the fresh - air position to the exhaust - air position along the second rotation direction, the second retaining rib 2113 abuts against the first retaining rib 115. Or it can be that when the fan 2 rotates from the exhaust - air position to the fresh - air position along the first rotation direction, the second retaining rib 2113 abuts against the first retaining rib 115; and when the fan 2 rotates from the fresh - air position to the exhaust - air position along the second rotation direction, the second retaining rib 2113 abuts against the first retaining rib 115.

[0062] As for the specific positions and arcs of the first retaining rib 115 and the second retaining rib 2113, they are not limited and can be reasonably set as required. For example: the first retaining rib 115 can be rotationally symmetric about the central axis of the first rotating shaft 2111 of the first support 21, and the arc is close to 360° (avoiding the shaft hole 111 and the bearing seat 112). The second retaining rib 2113 can be appropriately offset from the central axis of the first rotating shaft 2111, and the arc of the second retaining rib 2113 can be close to 180° (avoiding the first rotating shaft 2111 and the second rotating shaft 2112), so that the second retaining rib 2113 can reciprocally rotate about 180° within the cylinder 11 and can be in abutting cooperation with the first retaining rib 115 when the fan 2 rotates to the fresh air position and the exhaust position.

[0063] The first retaining rib 115 and the second retaining rib 2113 can also play a sealing role, which is beneficial to reducing the air flow passing through the radially outer side of the fan 2.

[0064] A sealing rib 2114 can also be provided on the outer side wall of the first support 21. The sealing rib 2114 can be axially and circumferentially offset from the second retaining rib 2113, and the sealing rib can be located radially inside the first retaining rib 115 to block a part of the space between the first retaining rib 115 and the outer side wall of the first support 21 and play a sealing role.

[0065] As Figure 16 shown, a sealing rib 2114 can also be provided on the outer side wall of the first support 21. The sealing rib 2114 can be axially and circumferentially offset from the second retaining rib 2113, and the sealing rib can be located radially inside the first retaining rib 115 to block a part of the space between the first retaining rib 115 and the outer side wall of the first support 21 and play a sealing role.

[0066] In some exemplary embodiments, as Figures 16 to 18 shown, the first support 21 includes a first section 211 and a second section 212 that are sequentially connected along the axial direction of the fan 2. The inner side wall of the first section 211 is cylindrical. The second section 212 includes a spherical surface portion 2121 provided with an air passing notch 2123 and an end surface portion 2122 connected to the spherical surface portion 2121. The end surface portion 2122 is located at one end of the spherical surface portion 2121 away from the first section 211. The outer side wall of the first section 211 is smoothly connected to the outer side wall of the spherical surface portion 2121. The first section 211 is connected to the first switching member 31, and the wind wheel 22 is located inside the first section 211. The main body of the motor 23 is located inside the second section 212 and is connected to the end surface portion 2122.

[0067] In this way, the outer walls of the first section 211 and the spherical surface portion 2121 of the second section 212 can be part of a spherical surface, which can be understood as being optimized by hollowing out on the basis of a semi-sphere. This facilitates the flexible rotation of the fan 2 within the cylinder 11 under the drive of the first switching member 31, and is conducive to reducing the risk of interference between the first bracket 21 and the cylinder 11. The inner wall of the first section 211 adopts a cylindrical structure, which can provide a flow-concentrating effect for the fan 2 and prevent air leakage.

[0068] The provision of the air passing notch 2123 ensures that the air flow can pass through the second section 212 smoothly. The end face portion 2122 can also be provided with an air passing notch 2123 to reduce the air resistance. The area of the air passing notch 2123 can be set relatively large to reduce the air resistance. The end face portion 2122 and the motor 23 of the fan 2 can be fixedly connected by fasteners.

[0069] In one example, as Figures 16 to 18 shown, three air passing notches 2123 are respectively provided on the spherical surface portion 2121 and the end face portion 2122, and the air passing notches 2123 on the spherical surface portion 2121 are integrated with the air passing notches 2123 on the end face portion 2122. The motor 23 of the fan 2 is fixedly connected to the end face by three screws.

[0070] In some exemplary embodiments, the number of fans 2 is multiple, and the multiple fans 2 are arranged in sequence along the axial direction of the housing 1, as Figure 22 and Figure 23 shown.

[0071] When the fresh air device needs to be connected to a relatively long fresh air duct and the air resistance is large, multiple fans 2 can be connected in series as needed to reduce the air resistance and increase the air volume.

[0072] Among them, the number of cylinders 11 can be equal to and in one-to-one correspondence with the number of fans 2. Adjacent cylinders 11 can be fixedly connected together by means of a clamp 8, etc., as Figure 22 and Figure 23 shown. Or, the number of cylinders 11 can also be not equal to the number of fans 2. For example, the length of the cylinder 11 is relatively long, so that one cylinder 11 can install one or more fans 2.

[0073] The number of the first switching members 31 can be equal to and in one-to-one correspondence with the number of fans 2, as Figure 22 and Figure 23 shown. Or, the number of the first switching members 31 can also be not equal to the number of fans 2. For example, one first switching member 31 can drive multiple fans 2 to rotate, which can be achieved by reasonably setting the transmission structure.

[0074] Of course, the number of fans 2 can also be one.

[0075] In some exemplary embodiments, the fresh air device further includes: an air outlet fixing plate 4 and a first air concentrator 5, as Figures 1 to 7 shown.

[0076] The air outlet fixing plate 4 is provided with an air passing channel 423, as Figure 8 shown. The air outlet fixing plate 4 is arranged to be fixedly connected to an installation carrier provided with a ventilation opening and is in butt joint and communication with the ventilation opening.

[0077] The first air concentrator 5 has a large head end (i.e., the end with a relatively large opening area) and a small head end (i.e., the end with a relatively small opening area) arranged back to back, as Figure 10 shown. The large head end of the first air concentrator 5 is fixedly connected to the housing 1 and is in butt joint and communication with the second air passing opening 122. The small head end of the first air concentrator 5 is fixedly connected to the air outlet fixing plate 4 and is in butt joint and communication with the air passing channel 423.

[0078] Among them, the air outlet fixing plate 4 is mainly used to dock the fresh air device with the installation carrier. The installation carrier may include, but is not limited to: air treatment equipment (such as air duct machines, air purifiers, wall-mounted air conditioners, cabinet air conditioners, humidifiers, dehumidifiers, etc.), a wall body provided with a ventilation opening, an air duct (which plays a pressurizing role in the middle of a relatively long air duct), etc.

[0079] The first air concentrator 5 is mainly used for a smooth transition between the air duct 12 and the ventilation opening of the installation carrier, avoiding a sudden change in the cross-sectional area of the air flow channel, and playing a role in concentrating the air flow in the fresh air mode.

[0080] In some exemplary embodiments, the large head end of the first air concentrator 5 is fixedly connected to the housing 1 through a clamp 8. Of course, the connection method between the large head end of the first air concentrator 5 and the housing 1 is not limited to the clamp 8 connection method, and may also be a snap connection 4221, a fastener connection, etc.

[0081] In some exemplary embodiments, as Figure 8 and Figure 9 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 passing channel 423, and the connecting plate 41 is arranged along the circumference of the air passing channel 423. The connecting plate 41 is arranged to be connected to the installation carrier. The docking portion 42 is arranged to be connected to the small head end of the first air concentrator 5.

[0082] The length of the air passing channel 423 can be relatively short and mainly plays the role of a pipe joint.

[0083] In some exemplary embodiments, the docking portion 42 is provided with a clamping portion, and the first flow concentrator 5 is provided with a clamping cooperation portion. The clamping portion is configured to be clamped with the clamping cooperation portion so that the air outlet fixing plate 4 is clamped and fixed to the first flow concentrator 5. The clamping and fixing method facilitates the loading and unloading operations between the air outlet fixing plate 4 and the first flow concentrator 5.

[0084] Of course, the connection method between the docking portion 42 and the first flow concentrator 5 is not limited to the clamping method, and can also be a fastener connection, a clamp 8 connection or other connection methods.

[0085] The connecting plate 41 and the mounting carrier can be fixedly connected by fasteners to ensure the connection strength and connection reliability.

[0086] In some exemplary embodiments, as Figure 8 and Figure 9 shown, the docking portion 42 includes a first cylindrical portion 421 and a flange 422 arranged along the circumference of the first cylindrical portion 421. The flange 422 is located at one end of the first cylindrical portion 421 away from the connecting plate 41. The flange 422 is provided with a clamping portion. The connecting plate 41 is provided with a connection hole 411, and the flange 422 is provided with an avoidance notch 4222 corresponding to the connection hole 411.

[0087] The connection hole 411 is configured to allow a fastener to pass through, so that the connecting plate 41 and the mounting carrier are fixedly connected by fasteners. The avoidance notch 4222 is arranged corresponding to the connection hole 411, and the area can be larger than the area of the connection hole 411, so as to facilitate the avoidance during the installation and disassembly of the fastener, provide an operating space for the installation and disassembly of the fastener, and avoid being interfered by the flange 422.

[0088] As Figure 8 and Figure 9 shown, the number of the connection holes 411 can be multiple, and the multiple connection holes 411 are arranged at intervals along the circumference of 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, a rectangle, a circle and other shapes.

[0089] In some exemplary embodiments, one of the clamping portion and the clamping cooperation portion includes a buckle 4221 (as Figure 8 and Figure 9 shown), and the other includes a clamping groove 51 (as Figure 10 shown). The clamping groove 51 includes an insertion groove 511 and a limiting groove 512 that communicate along the circumference of the first cylindrical portion 421, as Figure 10 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 along the circumferential direction of the first cylindrical portion 421 to the limiting groove 512 and be limited in the limiting groove 512.

[0090] In this way, for the assembly between the air outlet fixing plate 4 and the small head end of the first flow concentrating cover 5, first axially insert and then circumferentially rotate to achieve snap connection and fixation. During disassembly, first circumferentially rotate and then axially pull apart to separate, which can be achieved.

[0091] In some embodiments, as Figure 13 shown, the buckle 4221 includes a connecting portion and a limiting portion 4226. The limiting portion 4226 is connected to the connecting portion and forms an L-shaped structure with the connecting portion. The width of the insertion slot 511 is greater than the width of the limiting portion 4226, and the width of the limiting slot 512 is less than the width of the limiting portion 4226, so that the insertion portion 4225 and the limiting portion 4226 can be inserted into the insertion slot 511 together, and the insertion portion 4225 can be inserted into the limiting slot 512, but the limiting portion 4226 cannot axially enter or exit the limiting slot 512 along the axis of the first cylindrical portion 421. Therefore, the limiting portion 4226 can only be circumferentially rotated to the limiting slot 512, that is, limited in the limiting slot 512 and cannot move axially, realizing the snap connection and fixation between the air outlet fixing plate 4 and the first flow concentrating cover 5.

[0092] In some exemplary embodiments, the docking portion 42 is provided with an anti-rotation portion, and the first flow concentrating cover 5 is provided with an anti-rotation mating portion. The anti-rotation portion and the anti-rotation mating portion cooperate to limit the circumferential rotation of the first flow concentrating cover 5 relative to the air outlet fixing plate 4.

[0093] This can avoid the relative rotation between the first flow concentrating cover 5 and the air outlet fixing plate 4 during use, which affects the connection reliability between the air outlet fixing plate 4 and the first flow concentrating cover 5.

[0094] In some exemplary embodiments, the anti-rotation portion includes a folded edge 4223, as Figure 8 shown, the folded edge 4223 is located at the radially outer end of the docking 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 Figure 11 and Figure 12 shown. The fastener is radially inserted through the first limiting hole 4224 and the second limiting hole 53 of the first flow concentrating cover 5 to limit the circumferential rotation of the first flow concentrating cover 5 relative to the air outlet fixing plate 4.

[0095] In this way, the folded edge 4223 and the first flow concentrating cover 5 are fixedly connected by the fastener, and the connection direction of the fastener is along the radial direction of the first flow concentrating cover 5, so that the relative rotation between the first flow concentrating cover 5 and the air outlet fixing plate 4 can be effectively prevented, and the connection reliability between the air outlet fixing plate 4 and the first flow concentrating cover 5 is effectively improved.

[0096] In some exemplary embodiments, the small head end of the first flow concentrating cover 5 is provided with an annular connecting protrusion 52, as Figure 10 and Figure 11The slot 51 is provided on the end surface 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 .

[0097] In some exemplary embodiments, the fresh air device further includes at least one of a second focusing cover 6 and a filter assembly 7, such as Figures 1 to 7 shown.

[0098] The second focusing cover 6 has a large end (i.e., an end with a relatively large opening area) and a small end (i.e., an end with a relatively small opening area) arranged in opposite directions. Figure 19 The large end of the second focusing cover 6 is fixedly connected to the housing 1 and connected to the first air outlet 121, and the small end of the second focusing cover 6 is configured to be connected to the outdoor space.

[0099] The air outlet fixing plate 4 is mainly used to connect the fresh air device with the installation carrier. The installation carrier may include, but is not limited to, air handling equipment (such as duct units, air purifiers, wall-mounted air conditioners, cabinet air conditioners, humidifiers, dehumidifiers, etc.), walls with vents, air ducts (connected in the middle of relatively long air ducts to boost pressure), etc.

[0100] The second focusing cover 6 is mainly used for the smooth transition between the air duct 12 and the air outlet to be connected at the other end, avoiding a sudden change in the cross-sectional area of ​​the air flow channel, and focusing the outlet air flow in the exhaust mode.

[0101] The second focusing cover 6 can be connected to the outdoor space through the air duct, and the small head pipe of the second focusing cover 6 can be connected to the air duct.

[0102] 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 arranged on the airflow path of the air duct 12, and is arranged to filter the airflow passing through the filter assembly 7. The filter assembly 7 can filter the air passing through it, thereby improving the air quality. The filter assembly 7 can be fixed in the cylinder 11, or fixed outside the housing 1, such as fixed in the second focusing cover 6.

[0103] Of course, the fresh air device may not include the filter assembly 7.

[0104] In some exemplary embodiments, the large end of the second focusing cover 6 is fixedly connected to the housing 1 through a clamp 8, such as Figures 2 to 7 shown.

[0105] Of course, the large end of the second focusing cover 6 and the shell 1 can also be fixedly connected by other means, such as by fastener connection, buckle 4221 connection, etc.

[0106] In some exemplary embodiments, the fresh air device further includes a second switching member 32, as Figures 1 to 7 shown. The second switching member 32 is connected to the filter assembly 7 and is configured to drive the filter assembly 7 to rotate between an open position and a closed position.

[0107] As Figure 4 and Figure 5 shown, based on the fresh air device being in the fresh air mode, the filter assembly 7 is located at the closed position to filter the fresh air flow;

[0108] As Figure 6 and Figure 7 shown, based on the fresh air device being in the exhaust mode, the filter assembly 7 is located at the open position to avoid the exhaust air flow.

[0109] In this way, in the fresh air mode, the fresh air flow passes through the filter assembly 7 and is filtered and purified by the filter assembly 7, which is beneficial to improving the quality of the fresh air discharged into the room. In the exhaust mode, the exhaust air flow does not pass through the filter assembly 7, which can reduce the exhaust air resistance and make the exhaust air volume larger.

[0110] The second switching member 32 can be installed on the outer side wall of the second cylindrical portion 61. The second switching member 32 can be, but is not limited to, a stepper motor.

[0111] Of course, the fresh air device may not include the second switching member 32, then the filter assembly 7 is a fixed filter assembly and is in the closed position in both the fresh air mode and the exhaust mode.

[0112] In some embodiments, in the closed position, the central axis of the filter assembly 7 is aligned with the axial direction of the air duct 12, as Figure 4 and Figure 5 shown. In the open position, the central axis of the filter assembly 7 is perpendicular to the axial direction of the air duct 12, as Figure 6 and Figure 7 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°.

[0113] Of course, the rotation angle of the filter assembly 7 when switching between the closed position and the open position is not limited to 90°, and can fluctuate within a certain range based on 90°.

[0114] In some exemplary embodiments, the large head end of the second converging cover 6 is provided with a second cylindrical portion 61, as Figure 19 shown. The filter assembly 7 is rotatably installed within the second cylindrical portion 61.

[0115] As Figure 1As shown, the filter screen assembly 7 includes a filter screen 71 and a second support 72. The second support 72 is rotatably installed on the second cylindrical portion 61 and is connected to the second switching member 32. The filter screen 71 is installed on the second support 72.

[0116] The connection manner of the second support 72 and the second cylindrical portion 61 can be the same as or substantially the same as the connection manner of the first support 21 and the first cylindrical portion 421. Since the weight of the filter screen assembly 7 is generally not as heavy as that of the blower 2, a shaft seat 621 can be provided at the lower part of the second cylindrical portion 61, and there is no need to provide a bearing.

[0117] The second cylindrical portion 61 can be arranged in a stepped shape, and the filter screen assembly 7 can be arranged at the step of the second cylindrical portion 61, and the diameter change at the step can be relatively small.

[0118] In some exemplary embodiments, the second cylindrical portion 61 is provided with a maintenance opening 611, as Figure 1 and Figure 19 shown. The filter screen assembly 7 is arranged to be able to enter and exit the second cylindrical portion 61 through the maintenance opening 611.

[0119] A maintenance plate 62 is provided at the maintenance opening 611, as Figure 1 、 Figure 20 and Figure 21 shown. The maintenance plate 62 is detachably connected to the second cylindrical portion 61.

[0120] The provision of the maintenance opening 611 facilitates the quick replacement of the filter screen 71. The maintenance plate 62 and the second cylindrical portion 61 can be detachably connected, for example, by means of snap fasteners 4221, fasteners, etc. The loading and unloading efficiency of the snap fastener 4221 connection method is higher.

[0121] The radian of the maintenance opening 611 can be about 180°, which facilitates the smooth and quick entry and exit of the filter screen assembly 7 into and out of the second cylindrical portion 61. The shaft seat 621 can be provided on the maintenance plate 62.

[0122] Of course, the installation position of the filter screen assembly 7 is not limited to the second cylindrical portion 61 of the second air collecting cover 6, and can also be the cylindrical body 11 or other structures on the air flow path.

[0123] In some exemplary embodiments, a third retaining rib (not shown in the figure) is provided on the inner side wall of the second cylindrical portion 61 along the circumferential direction of the second cylindrical portion 61. A fourth retaining rib 721 is provided on the outer side wall of the second support 72, as Figure 1 shown. The third retaining rib is arranged to be in abutting cooperation with the fourth retaining rib 721 when the filter screen assembly 7 rotates to the closed position to limit the further rotation of the filter screen assembly 7.

[0124] For the setting forms of the third retaining rib and the fourth retaining rib 721, reference can be made to the setting forms of the foregoing first retaining rib 115 and second retaining rib 2113, which will not be elaborated here.

[0125] The third retaining rib and the fourth retaining rib 721 can play a sealing role, which is beneficial to reducing the air flow passing through the radial outer side of the filter screen assembly 7.

[0126] The embodiment of the present application also provides an air treatment device, including the fresh air device in any one of the above embodiments, and thus has all the above beneficial effects, which will not be repeated here.

[0127] Among them, the type of the air treatment device is not limited, and it can be but not limited to: air conditioners (such as duct machines, wall-mounted air conditioners, cabinet air conditioners, central air conditioners, etc.), air purifiers, humidifiers, dehumidifiers, disinfection machines, etc.

[0128] Of course, the fresh air device provided by the embodiment of the present application is not limited to being used in the air treatment device, and can also be used alone, such as being installed on a wall with a ventilation opening. Or, the fresh air device can also be connected in the middle of the air duct to provide a boosting effect for other fresh air devices.

[0129] The embodiment of the present application also provides a control method, which is applied to the fresh air device in any one of the above embodiments.

[0130] As Figure 24 shown, the control method includes:

[0131] Step S202: Determine the target working mode, and the target working mode includes a fresh air mode and an exhaust mode;

[0132] Step S204: Based on the target working mode being the fresh air mode, control the first switching member 31 to make the fan 2 located at the fresh air position;

[0133] Step S206: Based on the target working mode being the exhaust mode, control the first switching member 31 to make the fan 2 located at the exhaust position.

[0134] In this way, the control method provided by the embodiment of the present application enables the fresh air device to have both a fresh air mode and an exhaust mode, and the fan 2 and the air duct 12 used in the fresh air mode are the same as those used in the exhaust mode. Only by adjusting the position of the fan 2 through the first switching member 31 can the air flow direction be changed, and thus the working mode can be switched, without separately setting the fan 2 and the air duct 12 for the fresh air mode and the exhaust mode. Therefore, it is beneficial to reduce the number of fans 2, simplify the structure of the air duct 12, reduce the size of the fresh air device, and reduce the cost of the fresh air device.

[0135] Among them, the method for determining the target working mode is not limited. It can be determined through a remote controller, an operation panel, a control terminal (such as an APP of terminal devices like mobile phones, computers, smart bracelets, etc.), or by voice of the user, or by the indoor air quality detection result.

[0136] In some exemplary embodiments, controlling the first switching member 31 to make the blower 2 in the fresh air position includes:

[0137] Based on the blower 2 being in the fresh air position, controlling the first switching member 31 to maintain the current state so that the blower 2 is maintained in the fresh air position;

[0138] Based on the blower 2 not being in the fresh air position, controlling the first switching member 31 to act so that the blower 2 rotates to the fresh air position.

[0139] Based on the blower 2 being in the exhaust position, controlling the first switching member 31 to make the blower 2 in the exhaust position includes:

[0140] Based on the blower 2 being in the exhaust position, controlling the first switching member 31 to maintain the current state so that the blower 2 is maintained in the exhaust position;

[0141] Based on the blower 2 not being in the exhaust position, controlling the first switching member 31 to act so that the blower 2 rotates to the exhaust position.

[0142] In some exemplary embodiments, one of the fresh air position and the exhaust position is set as the initial position of the blower 2, and the control method further includes:

[0143] In response to the power-on instruction, determining whether the blower 2 is in the initial position of the blower 2;

[0144] Based on the blower 2 being in the initial position of the blower 2, performing the step of determining the target working mode;

[0145] Based on the blower 2 not being in the initial position of the blower 2, controlling the first switching member 31 to make the blower 2 rotate to the initial position of the blower 2.

[0146] In other words, before determining the target working mode, a reset detection of the blower 2 is first performed. When the blower 2 is in the initial position, it can normally enter the determination of the target working mode. When the blower 2 is not in the initial position, it is first reset and then the target working mode is determined. This can ensure that after determining the target working mode, the rotation angle of the blower 2 is fixed, which is beneficial to simplifying the electric control program of the first switching member 31 and also beneficial to improving the accuracy of the position of the blower 2 in the target working mode.

[0147] In some exemplary embodiments, the control method further includes: in response to the power-off instruction, controlling the first switching member 31 to reset the blower 2 to the initial position of the blower 2.

[0148] This is beneficial to ensuring that when the fresh air device is used next time, the fan 2 is in the initial position, facilitating a quick entry into the target working mode.

[0149] Moreover, the reset after the end of the target working mode and the reset detection before the start of the target working mode can play a dual - insurance role, which is beneficial to ensuring that the fresh air device starts from the initial position when entering the target working mode.

[0150] Among them, the shutdown instruction can be sent by the user or automatically generated when there are no other operation requirements after the end of the target working mode, that is, the device can automatically shut down after the end of the target working mode.

[0151] In some exemplary embodiments, the fresh air device further includes a filter assembly 7 and a second switching member 32. The second switching member 32 is configured to drive the filter assembly 7 to rotate between an open position and a closed position. The control method further includes:

[0152] Based on the target working mode being the fresh air mode, controlling the second switching member 32 to make the filter assembly 7 in the closed position;

[0153] Based on the target working mode being the exhaust mode, controlling the second switching member 32 to make the filter assembly 7 in the open position.

[0154] In this way, in the fresh air mode, the fresh air flow passes through the filter assembly 7 and is filtered and purified by the filter assembly 7, which is beneficial to improving the quality of the fresh air discharged into the room. In the exhaust mode, the exhaust air flow does not pass through the filter assembly 7, which can reduce the exhaust air resistance and make the exhaust air volume larger.

[0155] In some exemplary embodiments, controlling the second switching member 32 to make the filter assembly 7 in the closed position includes:

[0156] Based on the filter assembly 7 being in the closed position, controlling the second switching member 32 to maintain the current state so that the filter assembly 7 remains in the closed position;

[0157] Based on the filter assembly 7 not being in the closed position, controlling the second switching member 32 to act so that the filter assembly 7 rotates to the closed position.

[0158] Based on the filter assembly 7 being in the open position, controlling the second switching member 32 to make the filter assembly 7 in the open position includes:

[0159] Based on the filter assembly 7 being in the open position, controlling the second switching member 32 to maintain the current state so that the filter assembly 7 remains in the open position;

[0160] Based on the filter assembly 7 not being in the open position, controlling the second switching member 32 to act so that the filter assembly 7 rotates to the open position.

[0161] 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:

[0162] In response to a power-on instruction, determine whether the filter assembly 7 is in the initial position of the filter assembly 7;

[0163] Based on the filter assembly 7 being in the initial position of the filter assembly 7, perform the step of determining the target working mode;

[0164] Based on the filter assembly 7 not being in the initial position of the filter assembly 7, control the second switching member 32 to rotate the filter assembly 7 to the initial position of the filter assembly 7.

[0165] In other words, before determining the target working mode, a reset detection of the filter assembly 7 is first performed. When the filter assembly 7 is in the initial position, the determination of the target working mode can be normally entered. When the filter assembly 7 is not in the initial position, it is first reset and then the target working mode is determined. This can ensure that after determining the target working mode, the rotation angle of the filter assembly 7 is fixed, which is beneficial to simplifying the electric control program of the first switching member 31 and also beneficial to improving the accuracy of the position of the filter assembly 7 in the target working mode.

[0166] In some exemplary embodiments, the control method further includes:

[0167] In response to a power-off instruction, control the second switching member 32 to reset the filter assembly 7 to the initial position of the filter assembly 7.

[0168] This is beneficial to ensuring that when the fresh air device is used next time, the filter assembly 7 is in the initial position, which is convenient for quickly entering the target working mode.

[0169] Moreover, the reset after the end of the target working mode and the reset detection before the start of the target working mode can play a dual-insurance role, which is beneficial to ensuring that the fresh air device starts from the initial position when entering the target working mode.

[0170] In some exemplary embodiments, the control method further includes:

[0171] Based on the power-on of the fresh air device after power-off, control the fresh air device to continue operating in the working mode before power-off.

[0172] In other words, the fresh air device has a power-off memory function, can remember the working mode and progress before power-off during power-off, and can continue to operate in the working mode before power-off after power-on without the user's re-operation, which is beneficial to improving the user experience.

[0173] In one embodiment, the fresh air device includes: an air outlet fixing plate 4, a first air converging cover 5, a cylinder body 11, a fan 2, a first switching member 31, a filter assembly 7, and a second air converging cover 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.

[0174] Among them, the air outlet fixing plate 4 can be fixed on the fresh air inlet of the air duct machine or directly fixed on the fresh air inlet of the wall. The air outlet fixing plate 4 is provided with four connection holes 411, four avoidance notches 4222, a first limiting hole 4224, and three buckles 4221. The first air converging cover 5 is provided with three clamping grooves 51 and a second limiting hole 53. Both the first switching member 31 and the second switching member 32 are stepper motors.

[0175] The main function of the cylinder body 11 is to fix the fan 2 and provide air diversion. The upper part of the cylinder body 11 is provided with a shaft hole 111, the lower part is provided with a bearing seat 112, and a bearing is placed in the bearing seat 112. The middle part of the cylinder body 11 is designed with a retaining ring for limiting. The cylinder body 11 includes two sub-shells 113 which are arranged separately up and down, and the two sub-shells 113 are fixed by the buckles 4221 on both sides, which is convenient for the installation of the first bracket 21 of the fan 2. The cylinder body 11 is fixed on the first air converging cover 5 through a clamp 8.

[0176] The fan 2 is fixed on the first bracket 21. A part of the first bracket 21 is optimized from a semi-spherical hollowing, and the outer wall surface is a spherical surface, so that it can rotate flexibly in the cylinder body 11 under the drive of the stepper motor. The part cooperating with the impeller 22 is a straight cylinder shape, so as to provide a converging effect for the fan 2 and prevent air leakage.

[0177] The second air converging cover 6 can be fixed on the cylinder body 11 through a clamp 8. The lower part of the second air converging cover 6 is provided with a maintenance port 611, and the filter 71 can be quickly replaced by removing the maintenance plate 62.

[0178] During installation, first fix the air outlet fixing plate 4 on the target air outlet through four screws, then fix the module composed of the remaining components on the air outlet fixing plate 4 through the buckles 4221, and finally drive the limiting screws through the first limiting hole 4224 and the second limiting hole 53 to prevent circumferential rotation.

[0179] In the fresh air mode, the fan 2 is in the fresh air position, and the filter assembly 7 is in the closed position. After the air flow enters the fresh air device, the external air passes through the filter 71 and is introduced into the room by the fan 2 after being filtered by the filter 71.

[0180] In the exhaust mode, the fan 2 is in the exhaust position, and the filter assembly 7 is in the open position. The indoor air enters the fresh air device and is directly discharged outdoors without passing through the filter 71. The advantage of this is to reduce the air resistance of the exhaust and make the exhaust air volume larger.

[0181] When the fresh air system needs to connect a very long fresh air duct and the air resistance is large, multiple fan 2 cylinder 11 modules (i.e., the module formed by the fan 2, the cylinder 11, and the first switching member 31) can be connected in series according to requirements to reduce the air resistance and increase the air volume.

[0182] By default, the fan 2 is located at the fresh air position (the initial position of the fan 2), and the filter assembly 7 is located at the closed position (the initial position of the filter assembly 7). The working process of this fresh air device is as follows: When starting up, the positions of the fan 2 and the filter assembly 7 are detected. When it is detected that the fan 2 is at the fresh air position and the filter assembly 7 is at the closed position, the next step can be carried out normally; otherwise, it enters the reset mode to ensure that the fan 2 is at the fresh air position and the filter assembly 7 is at the closed position. When the fresh air mode is selected, the fan bracket (i.e., the first bracket 21) and the 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°, so that the fan 2 blows air in the reverse direction and the filter assembly 7 is in the open state, thereby reducing the exhaust air resistance. When the power is cut off and then turned on during operation, the program runs according to the last mode before the power cut. When shutting down, the fresh air device resets to the factory state, and the fan bracket and the filter 71 bracket reset to the initial positions.

[0183] In some other embodiments, the fresh air device does not include the filter assembly 7 and the second switching member 32, or the fresh air device includes the filter assembly 7 but does not include the second switching member 32. Compared with the foregoing solutions, the relevant content of the rotation of the filter 71 bracket is missing in the control program, and the rest of the program can be the same.

[0184] The embodiment of the present application also provides a control device, including a processor and a memory storing a computer program. When the processor executes the computer program, the steps of the control method in any of the above embodiments are implemented, and thus it has all the above beneficial effects and will not be elaborated herein.

[0185] The processor may be an integrated circuit chip with signal processing capabilities. The above-mentioned processor may be a general-purpose processor, including a central processing unit (CPU for short) and a network processor (NP for short); it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0186] The embodiment of the present application further provides a computer-readable storage medium storing a computer program, which when executed by a processor, implements the steps of the control method in any one of the above embodiments, and thus has all the above beneficial effects, which will not be elaborated herein.

[0187] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present application.

[0188] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0189] In the present application, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0190] In the present application, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0191] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0192] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limitations of this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

[0193] In any one or more of the above exemplary embodiments, the functions described can be implemented by hardware, software, firmware, or any combination thereof. If implemented in software, the functions can be stored on or transmitted via a computer-readable medium as one or more instructions or codes and executed by a hardware-based processing unit. The computer-readable medium can include a computer-readable storage medium corresponding to a tangible medium such as a data storage medium, or a communication medium including any medium that facilitates the transfer of a computer program, for example, from one place to another according to a communication protocol. In this way, the computer-readable medium generally corresponds to a non-transitory tangible computer-readable storage medium or a communication medium such as a signal or a carrier wave. The data storage medium can be any available medium that can be accessed by one or more computers or one or more processors to retrieve instructions, codes, and / or data structures for implementing the techniques described in this disclosure. A computer program product can include a computer-readable medium.

[0194] By way of example, and not limitation, such computer-readable storage media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, flash memory, or any other medium that can be used to store the desired program code in the form of instructions or data structures and that can be accessed by a computer. Also, any connection can be termed a computer-readable medium. By way of example, if instructions are transmitted using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of the 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 are directed to non-transitory tangible storage media. As used herein, disk and optical disks include compact disk (CD), laser disk, optical disk, digital versatile disk (DVD), floppy disk, or Blu-ray disk, etc., where disks typically reproduce data magnetically, while optical disks use lasers to optically reproduce data. Combinations of the above should also be included within the scope of computer-readable media.

[0195] By way of example, the 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 gate arrays (FPGAs), or other equivalent integrated or discrete logic circuits. Thus, as used herein, the term "processor" can refer to any one of the foregoing structures or any other structure 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 in a combined codec. Also, the techniques can be implemented entirely in one or more circuits or logic elements.

[0196] The technical solutions of the embodiments of the present disclosure can be implemented in a wide variety of devices or equipment, including wireless handsets, integrated circuits (ICs) or a group of ICs (e.g., a chipset). The various components, modules, or units described in the embodiments of the present disclosure are emphasized to highlight the functional aspects of the devices configured to perform the described techniques, but do not necessarily need to be implemented by different hardware units. Rather, as described above, the various units can be combined in a codec hardware unit or provided by a collection of interoperating hardware units, including one or more processors as described above, in conjunction with appropriate software and / or firmware.

Claims

1. A fresh air device, characterized in that: include: A shell, wherein an air duct is provided in the shell, and a first air outlet and a second air outlet are respectively provided at two ends of the air duct; a fan rotatably mounted in the air duct and configured to drive gas to flow through the air duct; and A first switching member, connected to the fan, configured to drive the fan to rotate between a fresh air position and an exhaust air position, so that the fresh air device switches between a fresh air mode and an exhaust air 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 the gas to flow from the first air outlet to the second air outlet; Based on the fresh air device being in the exhaust mode, the fan is located at the exhaust position to drive the gas to flow from the second air outlet to the first air outlet.

2. The fresh air device according to claim 1, characterized in that: The housing comprises a cylinder, and the fan comprises a first bracket, a wind wheel and a motor; The first bracket is rotatably mounted on the cylinder and connected to the first switching member; the wind wheel and the motor are mounted on the first bracket, and the motor is connected to the wind wheel to drive the wind wheel to rotate.

3. The fresh air device according to claim 2, characterized in that: The cylinder body is provided with an axial hole and a bearing seat which are arranged opposite to each other, the bearing seat is located at the lower side of the axial hole, the first bracket is correspondingly provided with a first rotating shaft and a second rotating shaft, the first rotating shaft is inserted in the axial hole and connected to the first switching member, and the second rotating shaft is inserted in the bearing seat.

4. The fresh air device according to claim 3, characterized in that: The cylinder comprises a plurality of sub-shells which are separately arranged, and the plurality of sub-shells are spliced ​​and fixed along the circumference of the cylinder to form a cylindrical structure; and / or The inner side wall of the cylinder is provided with a first retaining rib arranged along the circumference of the cylinder, and the outer side wall of the first bracket is provided with a second retaining rib, the first retaining rib is arranged to cooperate with the second retaining rib when the fan rotates along the first rotation direction to the fresh air position and / or rotates along the second rotation direction to the exhaust air position to limit the fan from continuing to rotate, and the second rotation direction is the opposite direction of the first rotation direction; and / or The first bracket includes 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 cylindrical, the second section includes a spherical section with a wind notch and an end section connected to the spherical section, the end section is located at an end of the spherical section away from the first section, the outer side wall of the first section is smoothly connected to the outer side wall of the spherical section, the first section is connected to the first switching member, the wind wheel is located in the first section, and the main body of the motor is located in the second section and connected to the end section.

5. The fresh air device according to any one of claims 1 to 4, characterized in that: There are multiple fans, and the fans are arranged in sequence along the axial direction of the housing.

6. The fresh air device according to any one of claims 1 to 4, characterized in that: Also includes: The tuyere fixing plate and the first focusing cover; The vent fixing plate is provided with an air passage, and the vent fixing plate is arranged to be fixedly connected to a mounting carrier provided with a vent, and to be butt-connected and communicated with the vent; The first focusing cover has a large end and a small end arranged opposite to each other, the large end of the first focusing cover is fixedly connected to the shell and connected to the second air outlet, and the small end of the first focusing cover is fixedly connected to the air outlet fixing plate and connected to the air passage.

7. The fresh air device according to claim 6, characterized in that: The air outlet fixing plate includes a connecting plate and a docking portion connected to the connecting plate, the docking portion is provided with the air passage, the connecting plate is arranged along the circumference of the air passage, and the connecting plate is arranged to be connected to the mounting carrier; the docking portion is arranged to be connected to the small head end of the first focusing cover.

8. The fresh air device according to claim 7, characterized in that: The docking portion is provided with a clamping portion, and the first condenser is provided with a clamping matching portion, and the clamping portion is configured to be clamped with the clamping matching portion so that the tuyere fixing plate is clamped and fixed with the first condenser.

9. The fresh air device according to claim 8, characterized in that: The docking portion comprises a first cylindrical portion and a flange arranged along the circumference of the first cylindrical portion, the flange is located at an end of the first cylindrical portion away from the connecting plate, and the flange is provided with the clamping portion; the connecting plate is provided with a connecting hole, and the flange is provided with an avoidance notch corresponding to the connecting hole; and / or One of the snap-fitting portion and the snap-fitting fitting portion includes a buckle, and the other includes a slot, wherein the slot includes an insertion slot and a limiting slot connected along the circumferential direction of the first cylindrical portion, and the buckle is configured 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 circumferential direction of the first cylindrical portion and limited in the limiting slot; and / or The docking portion is provided with a rotation-stopping portion, and the first focusing cover is provided with a rotation-stopping matching portion, and the rotation-stopping portion cooperates with the rotation-stopping matching portion to limit the circumferential rotation of the first focusing cover relative to the tuyere fixing plate.

10. The fresh air device according to any one of claims 1 to 4, characterized in that: The fresh air device further includes at least one of a second focusing cover and a filter assembly; The second focusing cover has a large end and a small end arranged in opposite directions, the large end of the second focusing cover is fixedly connected to the shell and connected to the first air outlet, and the small end of the second focusing cover is arranged to be able to communicate with the outdoor space; The filter assembly is arranged on the air flow path of the air duct, and is configured to filter the air flow passing through the filter assembly.

11. The fresh air device according to claim 10, characterized in that: The fresh air device further comprises a second switching member, which is connected to the filter assembly and is configured to drive the filter assembly to rotate between an open position and a closed position; Based on the fresh air device being in the fresh air mode, the filter assembly is located in the closed position to filter the fresh air flow; Based on the fresh air device being in the exhaust mode, the filter assembly is located in the open position to avoid the exhaust air flow.

12. The fresh air device according to claim 11, characterized in that: The second focusing cover has a second cylindrical portion at its large end, and the filter assembly is rotatably mounted in the second cylindrical portion; The filter assembly includes a filter and a second bracket, wherein the second bracket is rotatably mounted on the second cylindrical portion and connected to the second switching member; the filter is mounted on the second bracket.

13. The fresh air device according to claim 12, characterized in that: The second cylindrical portion is provided with an inspection port, and the filter assembly is arranged to be able to enter and exit the second cylindrical portion through the inspection port; An inspection plate is provided at the inspection opening, and the inspection plate is detachably connected to the second cylindrical portion.

14. An air treatment device, characterized in that: It comprises the fresh air device as described in any one of claims 1 to 13.

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