Axial flow wind wheel, axial flow fan and air conditioner

Abstract

According to the axial flow wind wheel, the axial flow fan and the air conditioner, on the basis of an axial flow air duct system, the air outlet direction of the air conditioner can be adjusted, the defect that hot air cannot be supplied downwards when a duct type air conditioner on the current market conducts heating is overcome, the air duct structure of the air conditioner is simplified, and mass production is facilitated. The axial-flow wind wheel comprises a mounting seat, wherein one end of the mounting seat is provided with a rotating part used for being connected with a positive and negative rotation motor; the blade is rotatably mounted on the mounting seat, and one side surface of the blade is set as a pressure surface; and the switching mechanism is connected with the blades and is arranged to drive the blades to rotate relative to the mounting base, so that the blades can be switched between a first working state in which the pressure surfaces face the rotating part and a second working state in which the pressure surfaces are opposite to the rotating part, and the wind direction of the axial flow wind wheel is switched.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment equipment, and more particularly to an axial flow fan wheel, an axial flow fan and an air conditioner. BACKGROUND

[0002] Traditional air conditioners such as ducted air conditioners have fixed air outlets, and air flow can only flow out of the air outlets, resulting in single air outlet direction and affecting user experience. Therefore, some products improve the air duct structure of the air conditioner, set the air duct into a variable profile shape structure, change the position of the air outlet by changing the profile of the air duct, and adjust the air outlet direction. This scheme adopts a complex air duct structure, has a high cost, and is not conducive to mass production. CONTENT OF THE UTILITY MODEL

[0003] The technical problem to be solved by the present application is to provide an axial flow fan wheel, an axial flow fan and an air conditioner, which can adjust the air outlet direction of the air conditioner and simplify the air duct structure of the air conditioner, and is conducive to mass production.

[0004] The present application provides an axial flow fan wheel, comprising: a mounting seat, one end of the mounting seat being provided with a rotating part connected to a forward-reverse motor; a blade rotatably mounted on the mounting seat, one side surface of the blade being provided as a pressure surface; and a switching mechanism connected to the blade and configured to drive the blade to rotate relative to the mounting seat, so that the blade can be switched between a first working state in which the pressure surface faces the rotating part and a second working state in which the pressure surface faces away from the rotating part, so as to switch the air direction of the axial flow fan wheel.

[0005] The present application also provides an axial flow fan, comprising: an axial flow fan wheel as described in the above embodiment; and a forward-reverse motor connected to the rotating part of the axial flow fan wheel.

[0006] The present application also provides an air conditioner, characterized in that it comprises: a housing provided with a first air outlet and a second air outlet; and an axial flow fan as described in the above embodiment, which is arranged in the housing and configured to generate air flow through the first air outlet and the second air outlet and change the flow direction of the air flow, so that the air conditioner has a first air outlet mode in which the air flow flows from the second air outlet to the first air outlet and a second air outlet mode in which the air flow flows from the first air outlet to the second air outlet.

[0007] The implementation of the above technical solutions can achieve the following beneficial effects:

[0008] The blade has a first working state and a second working state. The first working state can correspond to forward rotation of the reversible motor, and correspond to a first air outlet mode of the air conditioner. The second working state can correspond to reverse rotation of the reversible motor, and correspond to a second air outlet mode of the air conditioner. In the first working state, the pressure surface of the blade faces the rotating part, the reversible motor can rotate forward, and an air flow from the second air outlet to the first air outlet is generated, realizing the first air outlet mode. In the second working state, the pressure surface of the blade faces away from the rotating part, the reversible motor rotates reversely, and an air flow from the first air outlet to the second air outlet is generated, realizing the second air outlet mode.

[0009] In addition, in the first air outlet mode and the second air outlet mode, the pressure surface of the blade is in a windward state, so that an air flow with large air volume can be generated, the problem of obvious reduction of air volume when the conventional axial flow fan is reversed is solved, the air conditioner can realize switching of the air direction, and the air volume is not affected, the air duct structure of the air conditioner does not need to change shape when the air direction is switched, which is beneficial to simplify the air duct structure of the air conditioner and facilitate mass production of the product.

[0010] In other words, the axial flow impeller and the axial flow fan provided by the embodiment of the application can switch the direction of the pressure surface of the blade by rotating the blade, and realize the effect that the air outlet direction of the axial flow fan is reversible and the air volume is large in both air directions.

[0011] The air conditioner provided by the embodiment of the application adopts the axial flow fan with the air outlet direction being reversible and the air volume being large in both air directions, and is matched with a single fixed air duct, so that the air outlet direction of the air conditioner can be adjusted, the air duct structure of the air conditioner is not complicated, the structure is relatively simple, and the landing is facilitated, and mass production is facilitated.

[0012] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application. The objects and other advantages of the present application can be realized and achieved by the structures particularly pointed out in the description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the technical solutions of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical solutions of the present application, and do not constitute a limitation on the technical solutions of the present application.

[0014] Figure 1 The exploded structural schematic view of the axial flow fan in the first working state is provided for some embodiments of the present application;

[0015] Figure 2 The exploded structural schematic view of the axial flow fan in the second working state is provided for some embodiments of the present application;

[0016] Figure 3A partial exploded structural schematic view of an axial flow fan provided for some embodiments of the present application;

[0017] Figure 4 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 3

[0018] Figure 5 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application;

[0019] Figure 6 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 5

[0020] Figure 7 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 6

[0021] Figure 8 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 6

[0022] Figure 9 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 7

[0023] Figure 10 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 5

[0024] Figure 11 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 5

[0025] Figure 12 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 5

[0026] Figure 13 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 12

[0027] Figure 14 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 5

[0028] Figure 15 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 5

[0029] Figure 16 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 5

[0030] Figure 17 A perspective structural schematic view of an air conditioner provided for some embodiments of the present application; Figure 16 ​​​​​​​​​​​​A side view structural schematic diagram of the axial flow fan is shown.

[0031] Figure 18 For Figure 5 A sectional view structural schematic diagram of the air conditioner in a second air outlet mode is shown.

[0032] In the drawings, the components represented by each reference numeral are listed as follows:

[0033] 100 axial flow fan wheel, 200 axial flow fan, 300 air conditioner;

[0034] 1 mounting seat, 11 mounting cylinder, 111 first shaft hole, 112 second shaft hole, 12 mounting cover, 121 rotating part, 13 mounting cavity;

[0035] 2 blade, 21 blade body, 211 pressure surface, 22 rotating shaft;

[0036] 3 switching mechanism, 31 driver, 311 driving body, 312 driving shaft, 32 driving bevel gear, 33 driven bevel gear, 34 driving seat, 341 third shaft hole.

[0037] 4 reversible motor, 41 output shaft;

[0038] 5 motor support, 51 support seat, 52 connecting arm;

[0039] 6 casing, 61 partition, 611 air vent, 612 flow guide ring, 62 heat exchange cavity, 621 first air outlet, 63 fan cavity, 631 second air outlet, 64 air duct component, 65 bottom plate, 66 cover plate;

[0040] 7 heat exchanger. DETAILED DESCRIPTION

[0041] The principles and features of the present application are described below in conjunction with the drawings, and the examples are only used to explain the present application and not to limit the scope of the present application.

[0042] As Figures 1 to 18 shown, the embodiment of the present application provides an axial flow fan wheel 100, an axial flow fan 200 and an air conditioner 300. The air conditioner 300 can be an indoor unit of a split type air conditioner, or a split type air conditioner including an indoor unit and an outdoor unit, or an integrated type air conditioner.

[0043] In terms of installation mode, the air conditioner 300 can be but is not limited to a ceiling type air conditioner, such as a ducted air conditioner. The following will be explained and described by taking the ducted air conditioner as an example.

[0044] As Figures 5 to 10 shown, the air conditioner 300 includes a casing 6 and an axial flow fan 200. The casing 6 is provided with a first air outlet 621 and a second air outlet 631. The first air outlet 621 can be a side air outlet, and the second air outlet 631 can be a lower air outlet.

[0045] The axial flow fan 200 is arranged in the casing 6 and is configured to generate airflow through the first air outlet 621 and the second air outlet 631 and to change the direction of the airflow, so that the air conditioner 300 has a first air outlet mode (as shown in Figures 11 to 14 ) in which the airflow flows from the second air outlet 631 to the first air outlet 621 and a second air outlet mode (as shown in Figures 15 to 18 ) in which the airflow flows from the first air outlet 621 to the second air outlet 631.

[0046] As shown in Figure 1 and Figure 2 , the axial flow fan 200 comprises an axial flow fan wheel 100 and a reversible motor 4. The reversible motor 4 is connected to the axial flow fan wheel 100 and is configured to drive the axial flow fan wheel 100 to rotate in opposite directions to change the direction of the airflow.

[0047] In some exemplary embodiments, the axial flow fan wheel 100 comprises a mounting base 1, a blade 2, and a switching mechanism 3, as shown in Figure 7 .

[0048] The mounting base 1 has a rotating portion 121 at one end for connecting to the reversible motor 4, as shown in Figure 2 . The blade 2 is rotatably mounted to the mounting base 1. One side surface of the blade 2 is provided as a pressure surface 211, as shown in Figure 1 and Figure 2 .

[0049] The switching mechanism 3 is connected to the blade 2 and is configured to drive the blade 2 to rotate relative to the mounting base 1, so that the blade 2 can be switched between a first working state (as shown in Figure 1 , Figure 12 , Figure 13 and Figure 14 ) in which the pressure surface 211 faces the rotating portion 121 and a second working state (as shown in Figure 2 , Figure 16 , Figure 17 and Figure 18 ) in which the pressure surface 211 faces away from the rotating portion 121, to switch the direction of the airflow of the axial flow fan wheel 100.

[0050] The rotating portion 121 can be a rotating shaft, a shaft hole, or the like. The rotating portion 121 can be connected to the output shaft 41 of the reversible motor 4 and rotate under the drive of the reversible motor 4, thereby driving the axial flow fan wheel 100 to rotate, as shown in Figure 9 .

[0051] The blade 2 has a first working state and a second working state. The first working state can correspond to the forward rotation of the reversible motor 4, and correspond to the first air outlet mode of the air conditioner 300. The second working state can correspond to the reverse rotation of the reversible motor 4, and correspond to the second air outlet mode of the air conditioner 300. In the first working state, as shown in Figure 12 and Figure 13 the pressure surface 211 of the blade 2 faces the rotating part 121, the reversible motor 4 can rotate forward, and an airflow from the second air outlet 631 to the first air outlet 621 is generated, realizing the first air outlet mode, that is, the side air outlet mode. In the second working state, as shown in Figure 16 and Figure 17 the pressure surface 211 of the blade 2 faces away from the rotating part 121, the reversible motor 4 reverses, and an airflow from the first air outlet 621 to the second air outlet 631 is generated, realizing the second air outlet mode, that is, the lower air outlet mode.

[0052] In addition, in the first air outlet mode and the second air outlet mode, the pressure surface 211 of the blade 2 is in a windward state, as shown in Figure 14 and Figure 18 therefore, it can generate a large airflow, solving the problem that the conventional axial fan 200 significantly reduces the air volume when reversed, so that the air conditioner 300 can realize the switching of the air direction, and the air volume is not affected, and the air duct structure of the air conditioner 300 does not need to change shape when switching the air direction, which is beneficial to simplify the air duct structure of the air conditioner 300 and facilitate mass production.

[0053] In other words, the axial impeller and the axial fan 200 provided by the embodiment of the application can switch the direction of the pressure surface 211 of the blade 2, realize the effect that the air outlet direction of the axial fan 200 is reversible and the air volume of the two air directions is large.

[0054] The air conditioner 300 provided by the embodiment of the application can realize the adjustment of the air outlet direction of the air conditioner 300 by adopting the axial fan 200 with reversible air outlet direction and large air volume in two air directions, and will not cause the air duct structure of the air conditioner 300 to be complicated, and the structure is relatively simple, which is beneficial to the mass production.

[0055] It can be understood that the corresponding relationship between the two working states of the blade 2, the two rotation directions of the reversible motor 4, and the two air outlet modes of the air conditioner 300 is related to the relative position of the reversible motor 4 and the axial fan 100 in the shell 6, and can be adjusted as needed, as long as the reversible motor 4 can generate a large airflow when reversed.

[0056] In some example embodiments, the switching mechanism 3 comprises a driver 31 and a transmission assembly. The driver 31 is connected with the transmission assembly. The transmission assembly is connected with the blade 2 and is configured to drive the blade 2 to rotate under the driving of the driver 31.

[0057] The specific structure of the driver 31 and the transmission assembly is not limited. The driver 31 can be, but is not limited to, a motor.

[0058] Alternatively, the switching mechanism 3 can also not comprise the transmission assembly, and the driver 31 is directly connected with the blade 2.

[0059] In the switching process of the blade 2 between the first working state and the second working state, the rotation amplitude can be, but is not limited to, 180°, so as to facilitate the blade 2 to have the maximum efficiency in both working states.

[0060] In some example embodiments, the number of the blades 2 is multiple, such as two, three (as shown in Figure 3 and Figure 4 ), or more. The multiple blades 2 are arranged at intervals along the circumference of the mounting seat 1, such as uniformly arranged at intervals. In this way, it is beneficial to improve the air volume of the axial flow fan 100, thereby facilitating to improve the air volume of the air conditioner 300. As for the specific number of the blades 2, it is not limited, as long as it can be distributed and does not affect the rotation of the single blade 2.

[0061] As shown in Figure 3 and Figure 4 , the transmission assembly is connected with the multiple blades 2 and is configured to drive the multiple blades 2 to rotate synchronously under the driving of the driver 31. In this way, only one driver 31 is needed to realize the synchronous rotation of the multiple blades 2, which is beneficial to simplify the switching mechanism 3, reduce the production cost, and also beneficial to reduce the size of the switching mechanism 3.

[0062] In some example embodiments, as shown in Figure 3 and Figure 4 , the rotation axes 22 of the multiple blades 2 are coplanar. In this way, it is beneficial to reduce the axial size of the axial flow fan 100, and also beneficial to the uniform force of the axial flow fan 100.

[0063] In some example embodiments, the driver 31 is provided with a driving shaft 312 (as shown in Figure 2 ), and the axial direction of the driving shaft 312 is perpendicular to the rotation axes 22 of the multiple blades 2, as shown in Figure 1 . In this way, the driver 31 is located in the axial center area of the axial flow impeller, and the wind resistance generated is small, which is beneficial to improve the air volume of the axial flow fan 100.

[0064] In some example embodiments, the transmission assembly is configured as a gear transmission assembly. The gear transmission assembly comprises a driving bevel gear 32 and multiple driven bevel gears 33, as shown in Figure 3、 Figure 4 and Figure 9 The driving bevel gear 32 is connected with the driver 31, the plurality of driven bevel gears 33 are connected with the plurality of blades 2 one by one, and the plurality of driven bevel gears 33 are arranged along the circumference of the driving bevel gear 32 and meshed with the driving bevel gear 32.

[0065] Of course, the transmission assembly is not limited to the structure of the above-mentioned gear transmission assembly, such as a universal transmission device or other transmission structures, as long as the driving force of the driver 31 can be transmitted to the plurality of blades 2 to make the plurality of blades 2 rotate together around the respective rotation axes 22.

[0066] In one embodiment, as shown in Figure 3 and Figure 4 The number of blades 2 is three, and the number of driven bevel gears 33 is three. The rotation axes 22 of the three driven bevel gears 33 are coplanar and perpendicular to the rotation axis 22 of the driving bevel gear 32. The three driven bevel gears 33 and the driving bevel gear 32 form a structure similar to an umbrella or a pyramid.

[0067] In some exemplary embodiments, the mounting seat 1 is provided with a mounting cavity 13 (as shown in Figure 9 ) for mounting the transmission assembly, and a first shaft hole 111 and a second shaft hole 112 in communication with the mounting cavity 13, as shown in Figure 2 The number of second shaft holes 112 can be multiple, and the plurality of second shaft holes 112 are arranged one by one corresponding to the plurality of blades 2.

[0068] As shown in Figure 9 The driver 31 includes a driving body 311 and a driving shaft 312 connected with each other, the driving body 311 is located outside the mounting cavity 13, and the driving shaft 312 is connected with the transmission assembly (such as the driving bevel gear 32) through the first shaft hole 111. It can be that the driving shaft 312 is arranged in the first shaft hole 111 and connected with the transmission assembly. It can also be that the transmission assembly is arranged in the first shaft hole 111 and connected with the driving shaft 312. The driving bevel gear 32 can be connected with a support shaft.

[0069] As shown in Figure 9As shown, the blade 2 comprises a blade body 21 and a rotating shaft 22 connected to one end of the blade body 21. The blade body 21 is located outside the mounting cavity 13. The rotating shaft 22 is connected to a transmission assembly (such as the driven bevel gear 33) through the second shaft hole 112. It can be that the rotating shaft 22 is inserted into the second shaft hole 112 and connected to the transmission assembly. It can also be that the transmission assembly is inserted into the second shaft hole 112 and the rotating shaft 22 is connected. Alternatively, the rotating shaft 22 can be provided in an integrated structure with the driven bevel gear 33, and after the rotating shaft 22 is extended out of the second shaft hole 112 during assembly, the root of the blade body 21 is fixedly connected to the driven bevel gear 33 by means of fasteners, welding, etc. In this scheme, the rotating shaft 22 of the blade body 21 and the support shaft of the driven bevel gear 33 are combined into one.

[0070] The driving shaft 312 and the transmission assembly (such as the driving bevel gear 32) can be connected by shaft hole fitting, which can be interference fitting, non-circular shaft hole fitting, or fastener connection, as long as the driving shaft 312 can drive the transmission assembly to rotate.

[0071] The rotating shaft 22 and the transmission assembly (such as the corresponding driven bevel gear 33) can be connected by shaft hole fitting, which can be interference fitting, non-circular shaft hole fitting, or fastener connection, as long as the transmission assembly can drive the rotating shaft 22 to rotate.

[0072] The diameters of the first shaft hole 111 and the second shaft hole 112 can be relatively large, so that the shafts supporting the driving bevel gear 32 and the driven bevel gear 33 can be relatively thick, which is beneficial to improve the stability and reliability of the driving bevel gear 32 and the driven bevel gear 33.

[0073] In some exemplary embodiments, as shown in Figure 1 and Figure 2 As shown, the mounting seat 1 comprises an open-ended mounting cylinder 11 and a mounting cover 12 covering the open end of the mounting cylinder 11. The mounting seat 1 is designed in a split structure, which is convenient for assembly of the transmission assembly.

[0074] As shown in Figure 1 and Figure 2 The rotating part 121 is provided on the mounting cover 12, the first shaft hole 111 is provided on the end wall of the mounting cylinder 11 away from the mounting cover 12, and the second shaft hole 112 is provided on the side wall of the mounting cylinder 11. Of course, the opening can also be provided on the other end of the mounting cylinder 11, and the mounting cover 12 can also be provided on the other end of the mounting cylinder 11.

[0075] The mounting cylinder 11 can be a cylindrical structure, and the mounting cover 12 can be a circular plate structure.

[0076] The rotating part 121 can be a columnar structure. The rotating part 121 and the output shaft 41 of the reversible motor 4 can be connected through shaft hole fitting, which can be interference fitting, non-circular shaft hole fitting, or fastener connection, as long as the reversible motor 4 can drive the axial fan to rotate.

[0077] In some exemplary embodiments, as shown in Figure 1 , Figure 2 and Figure 9 , the switching mechanism 3 further includes a driving seat 34 located between the mounting seat 1 and the driving body 311 and supported on the mounting seat 1, and the driving body 311 is installed on the driving seat 34.

[0078] As shown in Figure 9 , the driving seat 34 is laminated with the mounting seat 1 and can be fixedly connected. The driving shaft 312 of the driver 31 can be relatively thin, the support shaft of the driving bevel gear 32 can be inserted into the mounting seat 1 through the first shaft hole 111, and the mounting seat 1 can be provided with a third shaft hole 341, as shown in Figure 2 , the driving shaft 312 can be inserted into the third shaft hole 341 and connected with the support shaft of the driving bevel gear 32.

[0079] As shown in Figure 1 and Figure 2 , the axial fan 200 provided by the embodiments of the present application includes the axial fan wheel 100 of any one of the above embodiments, and thus has all the beneficial effects described above, which will not be repeated here.

[0080] In some exemplary embodiments, as shown in Figure 1 and Figure 2 , the axial fan 200 further includes a motor support 5, and the reversible motor 4 is installed on the motor support 5.

[0081] As shown in Figure 2 , the motor support 5 can include a support seat 51 and a plurality of connecting arms 52, and the plurality of connecting arms 52 can be radially distributed along the circumference of the support seat 51. The reversible motor 4 is installed on the support seat 51. The support seat 51 can be a hollow structure, and the reversible motor 4 can be sleeved in the support seat 51 and fixedly connected with the support seat 51 through fasteners. The plurality of support arms can be connected with a support carrier (such as a guide ring 612 described below) of the axial fan 200.

[0082] As shown in Figures 5 to 18 , the air conditioner 300 provided by the embodiments of the present application includes the axial fan 200 of any one of the above embodiments, and thus has all the beneficial effects described above, which will not be repeated here.

[0083] In some exemplary embodiments, as shown in Figure 5 and Figure 7As shown, the first air vent 621 and the second air vent 631 have different air outlet directions. The first air vent 621 is set as a side air vent, and the second air vent 631 is set as a downwind air vent. The side air vent is located above the downwind air vent, so the side air vent can also be called the upwind air vent.

[0084] In this way, in cooling mode, the air conditioner 300 can use the first air outlet mode, such as... Figure 14 As shown, the airflow enters the air conditioner 300 through the downdraft vent and exits through the side vent, which helps avoid direct cold air blowing on the user and also facilitates long-distance airflow. In heating mode, the air conditioner 300 can use a second airflow mode, where the airflow enters the air conditioner 300 through the side vent and exits through the downdraft vent, as shown... Figure 18 As shown, this design facilitates the hot air to fall to the ground, achieving a warming effect on the feet and improving the user's heating experience.

[0085] In some exemplary embodiments, such as Figure 10 As shown, the housing 6 includes a chassis 65, a cover plate 66, side panels, and other structures. The chassis 65, cover plate 66, and side panels can be combined to form a box-like structure that is roughly rectangular in shape. Part of the side panel can be integrally formed with the chassis 65, and another part can be integrally formed with the cover plate 66, in order to reduce the number of parts in the housing 6 and simplify the assembly process.

[0086] In some exemplary embodiments, such as Figure 5 and Figure 10 As shown, a partition 61 is provided inside the casing 6, dividing the internal space of the casing 6 into a fan chamber 63 and a heat exchange chamber 62. A heat exchanger 7 may be installed in the heat exchange chamber 62. A first air vent 621 is located on the side wall of the heat exchange chamber 62, thus the first air vent 621 is a side air vent. A second air vent 631 is located on the bottom wall of the fan chamber 63, thus the second air vent 631 is a bottom air vent. The partition 61 has a ventilation opening 611 connecting the fan chamber 63 and the heat exchange chamber 62. The axial flow fan 200 is at least partially located within the fan chamber 63 and is correspondingly arranged with the ventilation opening 611. The ventilation opening 611 may be circular in shape.

[0087] In some exemplary embodiments, such as Figure 8 , Figure 10 , Figure 11 and Figure 15 As shown, a guide ring 612 is also provided inside the fan cavity 63. The guide ring 612 is located at the vent 611, and the axial flow fan 200 is installed radially inside the guide ring 612. The guide ring 612 can guide the airflow to the vent 611, which helps to reduce wind loss and increase the air volume of the air conditioner 300.

[0088] The connecting arm 52 of the motor support 5 of the axial flow fan 200 can be connected to the guide ring 612 near one end of the partition plate 61, so that the strength of the partition plate 61 is utilized to improve the support strength of the axial flow fan 200. In this way, part of the axial flow fan 200 is located in the heat exchange cavity 62.

[0089] In some embodiments, the guide ring 612 and the partition plate 61 are arranged in an integrated structure, which is beneficial to improve the connection strength of the guide ring 612 and the partition plate 61, and is also beneficial to simplify the assembly process of the air conditioner 300. Of course, the guide ring 612 and the partition plate 61 can also be arranged in a split structure.

[0090] In some exemplary embodiments, as shown in Figure 10 The fan cavity 63 further comprises a wind channel component 64 which communicates the second air outlet 631 and the guide ring 612. The wind channel component 64 can be a generally L-shaped pipe component. The wind channel component 64 can communicate the second air outlet 631 and the guide ring 612, and has a good flow guiding effect, which is beneficial to reduce wind loss and improve the air volume of the air conditioner 300.

[0091] In some exemplary embodiments, the number of the second air outlets 631 is multiple, such as two (as shown in Figure 5 and Figure 10 ), three or more. The multiple second air outlets 631 are arranged at intervals along the length direction of the casing 6. The number of the axial flow fans 200 is multiple, and the multiple axial flow fans 200 are arranged one-to-one with the multiple second air outlets 631. In this way, the air volume of the air conditioner 300 is improved.

[0092] As for the specific number of the axial flow fans 200, it can be reasonably set according to the air volume requirement of the air conditioner 300 and the air volume of the axial flow fan 200. Of course, the number of the axial flow fans 200 can also be one.

[0093] In summary, the air conditioner provided by the embodiments of the present application does not need to adjust the air outlet through a complex air duct structure (such as adjusting the air duct profile), but adjusts the pressure surface direction of the blade of the axial flow fan and the motor direction to realize the air direction adjustment, which can realize the up air outlet and down air outlet operation control of the ducted air conditioner. Since the air duct structure is not changed during use, the reliability of the whole machine air supply operation control is greatly improved. Moreover, the reversible axial flow fan makes the up and down air outlet demand of the ducted air conditioner be realized and controlled flexibly and quickly, and better provides the comfort of refrigeration and heating air supply.

[0094] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0095] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0096] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0097] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0098] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0099] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. An axial flow impeller, characterized in that, include: Mounting base, one end of which is provided with a rotating part for connecting to a forward and reverse reversing motor; The blade is rotatably mounted on the mounting base, and one side surface of the blade is configured as a pressure surface; and A switching mechanism, connected to the blade, is configured to drive the blade to rotate relative to the mounting base, so that the blade can switch between a first working state in which the pressure surface faces the rotating part and a second working state in which the pressure surface faces away from the rotating part, thereby switching the wind direction of the axial flow impeller.

2. The axial flow impeller according to claim 1, characterized in that, The switching mechanism includes: a driver and a transmission assembly; the driver is connected to the transmission assembly; the transmission assembly is connected to the blade and is configured to drive the blade to rotate under the drive of the driver.

3. The axial flow impeller according to claim 2, characterized in that, The number of blades is multiple, and the multiple blades are arranged at circumferential intervals along the mounting base; the transmission assembly is connected to the multiple blades and is configured to drive the multiple blades to rotate synchronously under the drive of the driver.

4. The axial flow impeller according to claim 3, characterized in that, The transmission assembly is configured as a gear transmission assembly, which includes: a driving bevel gear and multiple driven bevel gears; The driving bevel gear is connected to the driver, and the multiple driven bevel gears are connected to the multiple blades one by one. The multiple driven bevel gears are arranged at intervals along the circumference of the driving bevel gear and mesh with the driving bevel gear.

5. The axial flow impeller according to claim 3, characterized in that, The rotation axes of the plurality of blades are coplanar; and / or The driver is provided with a drive shaft, the axial direction of which is perpendicular to the rotation axes of the plurality of blades.

6. The axial flow impeller according to claim 2, characterized in that, The mounting base is provided with a mounting cavity for mounting the transmission assembly, and a first shaft hole and a second shaft hole communicating with the mounting cavity; The driver includes a drive body and a drive shaft connected together. The drive body is located outside the mounting cavity, and the drive shaft is connected to the transmission assembly through the first shaft hole. The blade includes a blade body and a rotating shaft connected to one end of the blade body. The blade body is located outside the mounting cavity. The rotating shaft is connected to the transmission assembly through the second shaft hole.

7. The axial flow impeller according to claim 6, characterized in that, The mounting base includes a mounting cylinder with one open end and a mounting cover disposed on the open end of the mounting cylinder. The rotating part is disposed on the mounting cover. The first shaft hole is disposed on the end wall of the mounting cylinder away from the mounting cover, and the second shaft hole is disposed on the side wall of the mounting cylinder; and / or The switching mechanism further includes a drive seat, which is located between the mounting base and the drive body and is supported on the mounting base, and the drive body is mounted on the drive seat.

8. An axial flow fan, characterized in that, include: Axial flow wind turbine as described in any one of claims 1 to 7; and A reversible motor is connected to the rotating part of the axial flow fan.

9. The axial flow fan according to claim 8, characterized in that, Also includes: Motor bracket, on which the forward and reverse motor is mounted.

10. An air conditioner, characterized in that, include: The housing is provided with a first air vent and a second air vent; and The axial flow fan as described in claim 8 or 9 is disposed within the housing and configured to generate airflow through the first air outlet and the second air outlet and to change the direction of airflow, so that the air conditioner has a first air outlet mode in which airflow flows from the second air outlet to the first air outlet and a second air outlet mode in which airflow flows from the first air outlet to the second air outlet.

11. The air conditioner according to claim 10, characterized in that, The first air vent and the second air vent have different air outlet directions. The first air vent is set as a side air vent, and the second air vent is set as a downwind vent. The side air vent is located above the downwind vent.

12. The air conditioner according to claim 10 or 11, characterized in that, The housing is provided with a partition, which divides the internal space of the housing into a fan chamber and a heat exchange chamber. The first air outlet is located on the side wall of the heat exchange chamber, and the second air outlet is located on the bottom wall of the fan chamber. The partition is provided with a ventilation opening that connects the fan chamber and the heat exchange chamber. The axial flow fan is at least partially located in the fan chamber and is arranged corresponding to the ventilation opening.

13. The air conditioner according to claim 12, characterized in that, The fan cavity is also provided with a guide ring, which is located at the ventilation opening, and the axial flow fan is installed on the radial inner side of the guide ring.

14. The air conditioner according to claim 13, characterized in that, The fan cavity is also equipped with a duct component that connects the second air outlet and the guide ring.

15. The air conditioner according to claim 10 or 11, characterized in that, The number of second air vents is multiple, and the multiple second air vents are spaced apart along the length direction of the casing; The number of axial flow fans is multiple, and each of the multiple axial flow fans is set up in a one-to-one correspondence with a multiple of the second air outlets.

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