Fan assembly and duct type air conditioner

Abstract

The invention provides a fan assembly and a duct type air conditioner. The fan assembly comprises a fan blade side cover; at least two blades; and a blade driving device. According to the fan assembly and the duct type air conditioner, the blade driving device is used for driving the blades to move between the first direction and the second direction, so that the fan assembly can guarantee the air volume in different air outlet states, and therefore the heat exchange efficiency of the duct type air conditioner is guaranteed; the problem that in the prior art, an air duct machine is high in heat exchange efficiency in the refrigeration mode and low in heat exchange efficiency in the heating mode is effectively solved, the purposes of waterfall type refrigeration and rapid heating can be achieved through the air duct machine, and the use experience of a user is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air treatment devices, in particular to a fan assembly and ducted air conditioner. BACKGROUND

[0002] The air inlet of the conventional ducted air conditioner is located at the bottom surface of the ducted air conditioner, and the air outlet is located at the side surface of the ducted air conditioner. Since the vertical distance from the air outlet to the ground is large, when the ducted air conditioner is in heating operation, the hot air blown out by the side air outlet will accumulate at the roof of the room, and the cold air with high density will still be at the lower part of the room, i.e. the thermal stratification phenomenon occurs, which causes poor heating effect in the room. This non-uniform air distribution leads to obvious stratification characteristics of the temperature field in the room, significantly reduces the user's comfort, and increases the heat exchange load of the air conditioning system and prolongs the temperature adjustment time.

[0003] In order to solve the above problems, the fan in the prior art rotates in both forward and reverse directions to drive the air. When the ducted air conditioner is in heating operation, the air inlet at the bottom surface of the ducted air conditioner is used for air supply, so that the hot air is directly blown to the bottom surface of the room, thereby ensuring that the hot air can reach the lower part of the room and improving the heating effect in the room. When the ducted air conditioner is in cooling operation, the air outlet at the side surface of the ducted air conditioner is used for air supply, so that the cold air can be blown to the far end of the room as much as possible, and then the cold air sinks due to its high density, thereby improving the cooling effect in the room.

[0004] However, the blades in the fan in the prior art are fixedly arranged. When the fan rotates in the forward direction, it can supply 100% of the air volume, but when the fan rotates in the reverse direction, the air volume can only reach a part of the air volume when the fan rotates in the forward direction. When the ducted air conditioner is in cooling operation, the fan rotates in the forward direction, which seriously reduces the air volume of the ducted air conditioner in heating operation and affects the heat exchange efficiency of the ducted air conditioner. SUMMARY

[0005] In order to solve the technical problem that the fixed arrangement of the blades of the fan in the prior art affects the heat exchange efficiency of the ducted air conditioner, a fan assembly and ducted air conditioner are provided, in which the orientation of the blades can be adjusted to ensure the air volume of the fan and improve the heat exchange efficiency.

[0006] A fan assembly comprises:

[0007] The number of the side covers of the fan blades is at least two, and each two side covers have a mounting interval therebetween;

[0008] At least two blades are arranged in a ring shape in the mounting interval with the axis of the side cover of the fan blade as the axis, and each blade can rotate relative to the side cover of the fan blade.

[0009] The blade driving device can drive the blade to rotate to switch the blade between the first orientation and the second orientation.

[0010] The blade driving device comprises a first driving part and a second driving part, the first driving part can cooperate with the blade to move the blade from the second orientation to the first orientation, and the second driving part can cooperate with the blade to move the blade from the first orientation to the second orientation.

[0011] The first driving part and / or the second driving part are electromagnetic structures, and the blade is provided with a magnetic force fitting part, and the first driving part and / or the second driving part can magnetically cooperate with the magnetic force fitting part.

[0012] The wind blade side plate is provided with a limiting structure, and the blade is in limiting cooperation with the limiting structure when the blade is in the first orientation or in the second orientation.

[0013] The limiting structure comprises a limiting column, the limiting column is arranged on the side of the wind blade side cover facing the mounting distance, and the side surface of the blade can abut against the limiting column.

[0014] The cross section of the blade is a curved surface, the curved surface of the blade is open towards the limiting column, the first end of the blade abuts against the limiting column when the blade is in the first orientation, and the second end of the blade abuts against the limiting column when the blade is in the second orientation.

[0015] The fan assembly further comprises a volute, the wind blade side cover, the blade and the blade driving device are arranged in the volute, the volute has a first air port and a second air port, the first air port serves as an air outlet and the second air port serves as an air inlet when the fan assembly is in the first air outlet state, and the first air port serves as an air inlet and the second air port serves as an air outlet when the fan assembly is in the second air outlet state.

[0016] The fan assembly is applied to a ducted-type air conditioner, the first air port faces the side surface of the ducted-type air conditioner, and the second air port faces the bottom surface of the ducted-type air conditioner.

[0017] The ducted-type air conditioner has a refrigeration mode and a heating mode, the fan assembly switches to the first air outlet state when the ducted-type air conditioner is in the refrigeration mode, and the fan assembly switches to the second air outlet state when the ducted-type air conditioner is in the heating mode.

[0018] The fan assembly further comprises a wind direction driving device connected to the volute, and the wind direction driving device can drive the volute to rotate to adjust the orientations of the first air outlet and the second air outlet.

[0019] A ducted-type air conditioner comprises the fan assembly.

[0020] The fan assembly and the ducted-type air conditioner provided by the application can ensure the air volume in different air outlet states of the fan assembly, thereby ensuring the heat exchange efficiency of the ducted-type air conditioner, effectively overcoming the problem that the heat exchange efficiency of the ducted-type air conditioner is high in the refrigeration mode and low in the heating mode in the prior art, and enabling the ducted-type air conditioner to achieve the purposes of waterfall refrigeration and rapid heating, and improving the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structural schematic view of the fan assembly provided by the embodiment of the application is shown in the figure;

[0022] Figure 2 A sectional view of the fan assembly provided by the embodiment of the application is shown in the figure;

[0023] Figure 3 Another sectional view of the fan assembly provided by the embodiment of the application is shown in the figure;

[0024] Figure 4 A partial schematic view of A in the figure; Figure 3 A partial schematic view of B in the figure;

[0025] Figure 5 Another sectional view of the fan assembly provided by the embodiment of the application is shown in the figure;

[0026] Figure 6 A partial schematic view of B in the figure; Figure 5 A partial schematic view of B in the figure;

[0027] Figure 7 A structural schematic view of the fan blade side cover, the blade, the first driving part, the second driving part and the limiting structure provided by the embodiment of the application is shown in the figure;

[0028] Figure 8 A structural schematic view of the fan blade side cover, the blade and the limiting structure provided by the embodiment of the application is shown in the figure;

[0029] Figure 9 A structural schematic view of the ducted-type air conditioner provided by the embodiment of the application is shown in the figure;

[0030] Figure 10 A side sectional view of the ducted-type air conditioner provided by the embodiment of the application is shown in the figure;

[0031] In the figure:

[0032] 1, fan blade side cover; 2, blade; 31, first driving part; 32, second driving part; 4, limiting structure; 21, first section; 22, second section; 23, third section; 24, swing shaft; 5, volute; 51, first air port; 52, second air port; 6, shell; 7, fan mounting plate. DETAILED DESCRIPTION

[0033] In order to make the objects, technical solutions and advantages of the present application clearer, the following further describes the present application with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely used to explain the present application and should not be used to limit the present application.

[0034] In order to make the persons skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of the present application.

[0035] It should be noted that the terms "first", "second" and the like in the description of the specification and claims of the present application and the above-described accompanying drawings are used to distinguish similar objects, and do not necessarily indicate or imply a specific order or sequence. It should be understood that the terms thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device comprising a series of steps or units does not necessarily limit to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to the process, method, product or device.

[0036] It should be noted that in the description of the present application, the terms "up", "down", "left", "right", "inner", "outer" and the like indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for description purposes and cannot be understood as indicating or implying relative importance.

[0037] In addition, it needs to be explained that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "arrangement", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements. 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.

[0038] The fan in the prior art rotates in forward and reverse directions to drive gas. In heating operation, the air outlet at the bottom surface of the ducted air conditioner is used for air supply, so that hot air is directly blown to the bottom surface of the room, thereby ensuring that the hot air can reach the lower part of the room and improving the heating effect in the room. In cooling operation, the air outlet at the side of the ducted air conditioner is used for air supply, so that cold air can be blown to the far end of the room as much as possible, and then the cold air is caused to sink by using the density of the cold air, thereby improving the cooling effect in the room. However, the blades in the fan in the prior art are fixedly arranged. When the fan rotates in the forward direction, the fan can supply 100% of the air volume, and when the fan rotates in the reverse direction, the air volume can only reach a part of the air volume in the forward direction. When the ducted air conditioner cools, the fan rotates in the forward direction, so that the air volume of the ducted air conditioner is greatly reduced when the ducted air conditioner heats, which still affects the heat exchange efficiency of the ducted air conditioner.

[0039] Therefore, the present application provides a fan assembly as shown in Figures 1 to 10 The fan assembly includes: a plurality of blade side covers 1, the number of the blade side covers 1 is at least two, and each two of the blade side covers 1 has a mounting interval therebetween; at least two blades 2, all the blades 2 are distributed in the mounting interval in a ring shape with the axis of the blade side cover 1 as the axis, and each of the blades 2 can rotate relative to the blade side cover 1; and a blade driving device, the fan assembly has a first air outlet state and a second air outlet state. When the fan assembly is in the first air outlet state, the blades 2 are in a first orientation. When the fan assembly is in the second air outlet state, the blades 2 are in a second orientation. The blade driving device can drive the blades 2 to rotate to switch the blades 2 between the first orientation and the second orientation. The blade driving device drives the blades 2 to move between the first orientation and the second orientation, so that the air volume can be ensured in different air outlet states of the fan assembly, thereby ensuring the heat exchange efficiency of the ducted air conditioner, effectively overcoming the problem that the heat exchange efficiency of the ducted air conditioner is high in the cooling mode and low in the heating mode in the prior art, so that the ducted air conditioner can achieve the purpose of waterfall cooling and rapid heating, and the use experience of the user is improved.

[0040] The fan assembly further comprises a rotating shaft, the blade side cover 1 is sleeved on the rotating shaft, and all the blades 2 are connected to the blade side cover 1. At this time, the axis of the blade side cover 1 is the axis of the rotating shaft, and all the blades 2 are distributed in a ring shape with the axis of the rotating shaft as the axis. The rotation of the rotating shaft can simultaneously drive the blade side cover 1 and all the blades 2 to rotate, so that the rotation of the blades 2 can be used to drive the gas, thereby achieving the effect of air supply.

[0041] The first air outlet state and the second air outlet state of the fan assembly refer to the fan assembly directing air outlet in different directions. The fan assembly further comprises a power component for driving the rotating shaft to rotate. When the fan assembly is in the first air outlet state, the power component drives the rotating shaft to rotate forward (preferably clockwise). When the fan assembly is in the second air outlet state, the power component drives the rotating shaft to rotate reversely (preferably counterclockwise).

[0042] The first orientation and the second orientation of the blade 2 refer to the inclination angle of the blade 2 relative to the blade side cover 1. When the cross section of the blade 2 is arc-shaped or curve-shaped, it refers to the direction of the opening of the arc or the curve. By adjusting the orientation of the blade 2, the blade 2 can always be at an appropriate angle to adapt to the forward rotation and reverse rotation of the rotating shaft, thereby ensuring the driving effect of the fan assembly on the airflow and effectively ensuring the air volume of the fan assembly in different air outlet states.

[0043] As an embodiment, the blade driving device comprises a first driving part 31 and a second driving part 32. The first driving part 31 can cooperate with the blade 2 to move the blade 2 from the second orientation to the first orientation. The second driving part 32 can cooperate with the blade 2 to move the blade 2 from the first orientation to the second orientation. The first driving part 31 and the second driving part 32 drive the blade 2 to move in different directions, thereby ensuring that the blade 2 can reliably switch to the first orientation or the second orientation.

[0044] When the first driving part 31 drives the blade 2 to move, the second driving part 32 is separated from the blade 2, or the driving force of the first driving part 31 on the blade 2 exceeds the driving force of the second driving part 32 on the blade 2, thereby avoiding interference of the second driving part 32 with the movement of the blade 2. Similarly, when the second driving part 32 drives the blade 2 to move, the first driving part 31 is separated from the blade 2, or the driving force of the second driving part 32 on the blade 2 exceeds the driving force of the first driving part 31 on the blade 2, thereby avoiding interference of the first driving part 31 with the movement of the blade 2.

[0045] Optionally, the first driving part 31 is an electromagnetic structure, the blade 2 is provided with a magnetic force matching part, the first driving part 31 can be magnetically matched with the magnetic force matching part, when the first driving part 31 needs to drive the blade 2, the first driving part 31 is powered to generate a magnetic force, the first driving part 31 can adsorb the magnetic force matching part on the blade 2, so that the blade 2 is driven by the first driving part 31, and the movement of the blade 2 is realized. The second driving part 32 can be other driving structures, for example, the second driving part 32 can be a spring, when the first driving part 31 is powered off, the spring keeps the blade 2 in the second orientation, and when the first driving part 31 is powered on, the adsorption force between the first driving part 31 and the magnetic force matching part exceeds the elastic force of the spring, so that the blade 2 can move to the first orientation, and the purpose of driving the blade 2 to move is achieved.

[0046] Of course, the second driving part 32 can also be separated from the blade 2, when the first driving part 31 is powered on, the adsorption force between the first driving part 31 and the magnetic force matching part can directly drive the blade 2 to move, at this time, the driving force of the second driving part 32 on the blade 2 does not need to be overcome, and the movement reliability of the blade 2 is ensured.

[0047] Alternatively, the second driving part 32 is an electromagnetic structure, the blade 2 is provided with a magnetic force matching part, the second driving part 32 can be magnetically matched with the magnetic force matching part, when the second driving part 32 needs to drive the blade 2, the second driving part 32 is powered to generate a magnetic force, the second driving part 32 can adsorb the magnetic force matching part on the blade 2, so that the blade 2 is driven by the second driving part 32, and the movement of the blade 2 is realized.

[0048] The first driving part 31 can be other driving structures, for example, the first driving part 31 can be a spring, when the second driving part 32 is powered off, the spring keeps the blade 2 in the first orientation, and when the second driving part 32 is powered on, the adsorption force between the second driving part 32 and the magnetic force matching part exceeds the elastic force of the spring, so that the blade 2 can move to the second orientation, and the purpose of driving the blade 2 to move is achieved.

[0049] Of course, the first driving part 31 can also be separated from the blade 2, when the second driving part 32 is powered on, the adsorption force between the second driving part 32 and the magnetic force matching part can directly drive the blade 2 to move, at this time, the driving force of the second driving part 32 on the blade 2 does not need to be overcome, and the movement reliability of the blade 2 is ensured.

[0050] Alternatively, the first driving part 31 and the second driving part 32 are both electromagnetic structures, and the blade 2 is provided with a magnetic force matching part, and the first driving part 31 and the second driving part 32 can be magnetically matched with the magnetic force matching part. When the first driving part 31 needs to drive the blade 2, the first driving part 31 is powered to generate a magnetic force, and the first driving part 31 can adsorb the magnetic force matching part on the blade 2, so that the blade 2 is driven by the first driving part 31, and the movement of the blade 2 is realized. When the second driving part 32 needs to drive the blade 2, the second driving part 32 is powered to generate a magnetic force, and the second driving part 32 can adsorb the magnetic force matching part on the blade 2, so that the blade 2 is driven by the second driving part 32, and the movement of the blade 2 is realized.

[0051] When the first driving part 31 is powered, the magnetic force of the first driving part 31 drives the blade 2, and the second driving part 32 is powered off at this time, and the second driving part 32 and the blade 2 are separated from each other. Similarly, when the second driving part 32 is powered, the magnetic force of the second driving part 32 drives the blade 2, and the first driving part 31 is powered off at this time, and the second driving part 32 and the blade 2 are separated from each other.

[0052] The magnetic force matching part on the blade 2 is made of magnetizable material, preferably iron, copper and other magnetizable metal materials.

[0053] The blade side plate is provided with a limiting structure 4, and the blade 2 is limited by the limiting structure 4 when the blade 2 is in the first orientation or in the second orientation. The limiting structure 4 limits the blade 2, so that the blade 2 cannot continue to move when it reaches the first orientation or the second orientation. When the fan assembly is working, the blade 2 can be reliably fixed in the first orientation or the second orientation, and can reliably drive the gas, avoiding the problem that the blade 2 moves due to the resistance of the gas, and improving the reliability of the fan assembly.

[0054] Optionally, the limiting structure 4 includes a limiting column, and the limiting column is arranged on one side of the blade side cover 1 facing the mounting distance, and the side surface of the blade 2 can abut against the limiting column. The abutment of the limiting column on the side surface of the blade 2 can inhibit the further movement of the blade 2, and due to the driving of the first driving part 31 or the second driving part 32 on the blade 2, the blade 2 can be kept moving towards the limiting column.

[0055] For example, the first driving part 31 drives the blade 2, the blade 2 is switched to the first orientation by the first driving part 31, when the blade 2 reaches the first orientation, the side surface of the blade 2 abuts against the limiting column, at this time, the first driving part 31 cannot drive the blade 2 to continue moving, and the first driving part 31 can also keep the blade 2 from moving when it is subjected to the resistance of the gas, thereby ensuring the reliability of the blade 2 in the first orientation, and further ensuring the reliability of the fan assembly.

[0056] Similarly, when the second driving part 32 drives the blade 2, the blade 2 is switched to the second orientation by the second driving part 32, when the blade 2 reaches the second orientation, the side surface of the blade 2 abuts against the limiting column, at this time, the second driving part 32 cannot drive the blade 2 to continue moving, and the second driving part 32 can also keep the blade 2 from moving when it is subjected to the resistance of the gas, thereby ensuring the reliability of the blade 2 in the second orientation, and further ensuring the reliability of the fan assembly.

[0057] As shown in Figure 4 and 6 , the cross section of the blade 2 is curved, the curved opening of the blade 2 faces the limiting column, when the blade 2 is in the first orientation, the first end of the blade 2 abuts against the limiting column, when the blade 2 is in the second orientation, the second end of the blade 2 abuts against the limiting column. That is, the blade 2 swings on one side of the limiting column to realize the adjustment between the first orientation and the second orientation.

[0058] Specifically, the blade 2 includes a first segment 21, a second segment 22 and a third segment 23 arranged in sequence, wherein the first segment 21 constitutes the first end of the blade 2, the third segment 23 constitutes the second end of the blade 2, and the second segment 22 is provided with a swing shaft 24 for the blade 2 to swing, the blade 2 is connected to the fan blade side cover 1 through the swing shaft 24, and the blade 2 is switched between the first orientation and the second orientation through the swing shaft 24, and the limiting column is located on one side of the swing shaft 24, and the distance between the limiting column and the swing shaft 24 is less than the sum of the length of the first segment 21 and the distance between the first segment 21 and the swing shaft 24, and also less than the sum of the length of the third segment 23 and the distance between the third segment 23 and the swing shaft 24, thereby ensuring the abutting reliability of the first segment 21 and the third segment 23 with the limiting column.

[0059] Preferably, the curved opening of the blade 2 always faces the same direction as the rotation direction of the rotating shaft, at this time, the air supply effect of the fan assembly is the best.

[0060] The fan assembly further comprises a volute 5, the blade side cover 1, the blade 2 and the blade driving device are arranged in the volute 5, the volute 5 has a first air port 51 and a second air port 52, when the fan assembly is in the first air outlet state, the first air port 51 serves as an air outlet and the second air port 52 serves as an air inlet; when the fan assembly is in the second air outlet state, the first air port 51 serves as an air inlet and the second air port 52 serves as an air outlet. The volute 5 is used to straighten the airflow generated during the rotation of the blade 2, and the first air port 51 and the second air port 52 are used to control the flow direction of the airflow, thereby ensuring the reliability of the air inlet and outlet of the fan assembly.

[0061] The fan assembly is applied to a ducted air conditioner, the first air port 51 faces the side of the ducted air conditioner, and the second air port 52 faces the bottom of the ducted air conditioner. When the first air port 51 blows air, the ducted air conditioner can realize side air supply, and when the second air port 52 blows air, the ducted air conditioner can realize downward air supply.

[0062] Specifically, the ducted air conditioner has a refrigeration mode and a heating mode, when the ducted air conditioner is in the refrigeration mode, the fan assembly switches to the first air outlet state, at this time the first air port 51 serves as an air outlet, and the cold air generated by the ducted air conditioner can be blown out from the side of the ducted air conditioner, the cold air can flow along the roof of the room and flow downward under the action of its own gravity, thereby realizing waterfall refrigeration; when the ducted air conditioner is in the heating mode, the fan assembly switches to the second air outlet state, at this time the second air port 52 serves as an air outlet, and the hot air generated by the ducted air conditioner can be blown out from the bottom of the ducted air conditioner, the hot air can quickly reach the bottom of the room, ensuring that the hot air is sent to the lower half of the room, effectively improving the heat exchange efficiency of the ducted air conditioner and the user experience.

[0063] In order to further improve the air supply effect of the ducted air conditioner, the fan assembly further comprises a wind direction driving device, the wind direction driving device is connected to the volute 5, and the wind direction driving device can drive the volute 5 to rotate to adjust the direction of the first air port 51 and the second air port 52. The wind direction driving device can further adjust the direction of the first air port 51 and the second air port 52 by adjusting the position of the volute 5.

[0064] For example, when the ducted air conditioner is in the refrigeration mode, the first air port 51 can be further inclined to the roof direction to increase the ability of the cold air to adhere to the roof to flow, thereby improving the air supply distance of the cold air and the effect of waterfall refrigeration, and when the ducted air conditioner is in the heating mode, the second air port 52 can be adjusted as much as possible to the direction perpendicular to the ground to reduce the distance of the hot air from the second air port 52 to the ground, so that the hot air can quickly reach the ground, improving the heating effect.

[0065] The ducted air conditioner further comprises a housing 6 and a fan mounting plate 7, the fan assembly is rotatably arranged on the housing 6 through the volute support, the fan mounting plate 7 is arranged on the housing 6, and the fan mounting plate 7 divides the housing 6 into a fan cavity and a heat exchange cavity, the fan assembly is arranged in the fan cavity, and the heat exchanger is arranged in the heat exchange cavity, the first air port 51 of the volute 5 extends into the heat exchange cavity through the fan mounting plate 7, and the second air port 52 is located on the bottom surface of the housing 6.

[0066] Since the volute 5 can rotate under the driving of the air direction driving device, the fan mounting plate 7 is provided with an avoiding area for avoiding the first air port 51. Further, in order to ensure the sealing between the fan cavity and the heat exchange cavity, a sealing structure which can be adjusted along with the movement of the first air port 51 is arranged at the avoiding area, so as to avoid unnecessary circulation in the ducted air conditioner and further improve the heat exchange efficiency of the ducted air conditioner.

[0067] The number of the fan assemblies can be two, the two fan assemblies are coaxially arranged in the fan cavity, and the air direction driving device is located between the two fan assemblies, so that the air direction driving device can drive the two fan assemblies at the same time.

[0068] Preferably, the air direction driving device comprises a linear motor.

[0069] A ducted air conditioner comprises the above fan assembly.

[0070] The above embodiments only express several embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A fan assembly, characterized by: The fan assembly comprises: a plurality of blade side covers (1), the number of the blade side covers (1) is at least two, and each two of the blade side covers (1) has an installation interval; at least two blades (2), all the blades (2) are distributed in the installation interval in a ring shape with the axis of the blade side cover (1) as the axis, and each blade (2) can rotate relative to the blade side cover (1); a blade driving device, the fan assembly has a first air outlet state and a second air outlet state, when the fan assembly is in the first air outlet state, the blades (2) are in a first orientation, when the fan assembly is in the second air outlet state, the blades (2) are in a second orientation, and the blade driving device can drive the blades (2) to rotate to switch the blades (2) between the first orientation and the second orientation.

2. The fan assembly of claim 1, wherein: The blade driving device comprises a first driving part (31) and a second driving part (32), the first driving part (31) can cooperate with the blades (2) to move the blades (2) from the second orientation to the first orientation, and the second driving part (32) can cooperate with the blades (2) to move the blades (2) from the first orientation to the second orientation.

3. The fan assembly of claim 2, wherein: The first driving part (31) and / or the second driving part (32) is an electromagnetic structure, a magnetic force matching part is arranged on the blade (2), and the first driving part (31) and / or the second driving part (32) can magnetically cooperate with the magnetic force matching part.

4. The fan assembly of claim 1, wherein: A limiting structure (4) is arranged on the blade side cover, and the limiting structure (4) limits the cooperation of the blades (2) when the blades (2) are in the first orientation or the second orientation.

5. The fan assembly of claim 4, wherein: The limiting structure (4) comprises a limiting column, the limiting column is arranged on the side of the blade side cover (1) facing the installation interval, and the side surface of the blade (2) can abut against the limiting column.

6. The fan assembly of claim 5, wherein: The cross section of the blade (2) is a curved surface, the curved surface of the blade (2) is open towards the limiting column, the first end of the blade (2) abuts against the limiting column when the blade (2) is in the first orientation, and the second end of the blade (2) abuts against the limiting column when the blade (2) is in the second orientation.

7. The fan assembly of claim 1, wherein: The fan assembly further comprises a volute (5), the blade side cover (1), the blade (2) and the blade driving device are arranged in the volute (5), the volute (5) has a first air port (51) and a second air port (52), the first air port (51) serves as an air outlet and the second air port (52) serves as an air inlet when the fan assembly is in the first air outlet state, and the first air port (51) serves as an air inlet and the second air port (52) serves as an air outlet when the fan assembly is in the second air outlet state.

8. The fan assembly of claim 7, wherein: The fan assembly is applied to a ducted-type air conditioner, the first air port (51) faces the side surface of the ducted-type air conditioner, and the second air port (52) faces the bottom surface of the ducted-type air conditioner.

9. The fan assembly of claim 8, wherein: The ducted air conditioner has a cooling mode and a heating mode, when the ducted air conditioner is in the cooling mode, the fan assembly switches to the first air outlet state; when the ducted air conditioner is in the heating mode, the fan assembly switches to the second air outlet state.

10. The fan assembly of claim 7, wherein: The fan assembly further comprises a wind direction driving device connected to the volute (5), and the wind direction driving device can drive the volute (5) to rotate to adjust the direction of the first air outlet (51) and the second air outlet (52).

11. A ducted fan machine characterised by: The fan assembly comprises any one of claims 1 to 10.

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