Air guide module, fan assembly and air conditioner

Abstract

The present invention provides a flow guide module, a fan assembly and an air conditioner. The flow guide module is used to guide the centrifugal fan, and the flow guide module includes: a flow guide plate, which is arranged at intervals from the centrifugal fan along the radial direction of the centrifugal fan; the flow guide plate is an arc-shaped structure, and the flow guide plate is protruded toward a side away from the centrifugal fan; and a driving part, which is connected to the flow guide plate to drive the flow guide plate to deform so that the radius of the flow guide plate changes with the rotation speed of the centrifugal fan. The technical solution of the present invention solves the problem that the flow guide module in the prior art cannot be adjusted according to the rotation speed of the centrifugal fan.

Description

Technical Field

[0001] The present invention relates to the technical field of fan flow guidance, and in particular to a flow guidance module, a fan assembly and an air conditioner. Background Art

[0002] Traditional centrifugal fan assemblies use axial air inlet and radial air outlet. In related technologies, in order to change the air outlet direction of the centrifugal fan assembly, a guide structure is provided to guide the air outlet of the centrifugal fan, so that the centrifugal fan assembly uses axial air inlet and axial air outlet.

[0003] However, in the related art, the guide structure cannot be adjusted according to the rotation speed of the centrifugal fan, which affects the air output of the centrifugal fan assembly. Summary of the invention

[0004] The main purpose of the present invention is to provide a flow guide module, a fan assembly and an air conditioner to solve the problem that the flow guide structure in the prior art cannot be adjusted according to the rotation speed of the centrifugal fan.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a guide module for guiding a centrifugal fan, the guide module comprising: a guide plate, which is arranged in a radial direction of the centrifugal fan, the guide plate being spaced apart from the centrifugal fan; the guide plate is an arc-shaped structure, and the guide plate is protruded toward a side away from the centrifugal fan; and a driving unit, which is connected to the guide plate to drive the guide plate to deform so that the radius of the guide plate changes with the rotation speed of the centrifugal fan.

[0006] Furthermore, the guide module also includes: a slide rail structure, which is arranged on the surface of the guide plate away from the centrifugal fan, and the slide rail structure extends along the circumference of the guide plate; a support column, which is arranged at a distance from the guide plate along the radial direction of the centrifugal fan, and the support column is located on the side of the guide plate away from the centrifugal fan; a sliding part, both of which are pivotally arranged on the support column, and each sliding part includes a slider structure slidably connected to the slide rail structure; wherein the driving part is arranged between the two sliding parts to change the radius of the guide plate by driving the two sliding parts to move toward or away from each other synchronously.

[0007] Furthermore, the driving part is a coil spring, and both ends of the coil spring are respectively connected to the two sliding parts; or the driving part is a gas spring, and both ends of the gas spring are respectively connected to the two sliding parts; or the driving part is a damper, and both ends of the damper are respectively connected to the two sliding parts.

[0008] Furthermore, the driving part includes a cylinder or an oil cylinder or a motor, and the output end of the driving part is drivingly connected to the sliding part; the guide module also includes: a controller, the controller is electrically connected to the centrifugal fan, and the controller is electrically connected to the driving part to control the radius of the guide plate according to the rotation speed of the centrifugal fan.

[0009] Furthermore, the sliding part includes: a connecting tube, which is rotatably mounted on the supporting column; a connecting plate, one end of which is connected to the outer peripheral wall of the connecting tube, and the sliding block structure is arranged on the other end of the connecting plate.

[0010] Furthermore, the slide rail structure includes two slide rail parts, which are arranged at intervals along the axial direction of the guide plate; each slide rail part has a guide hole extending along the circumference of the guide plate; the slider structure includes two sliders, which are respectively arranged on both sides of the connecting plate along the axial direction of the support column, and the two sliders respectively extend into the two guide holes.

[0011] Furthermore, the slider is a cylinder; or the slider is a sphere; or the slider is a rotating shaft, and the slider structure also includes a bearing, and the bearing sleeve is arranged on the rotating shaft and is located in the guide hole.

[0012] Furthermore, along the radial direction of the connecting tube, the connecting plate includes a first plate segment and a second plate segment connected to each other; along the axial direction of the connecting tube, the length of the first plate segment is smaller than the length of the second plate segment; the first plate segment is connected to the outer peripheral wall of the connecting tube and is located at the first end of the connecting tube, and part of the structure of the second plate segment extends out of the connecting tube along the axial direction of the connecting tube; the slider structure is arranged on the second plate segment; the first ends of the two connecting tubes are butted so that the two connecting plates are arranged opposite to each other; and the driving part is arranged between the two connecting plates.

[0013] Furthermore, the guide module further includes: a mounting plate, wherein the two mounting plates are respectively arranged at two ends of the support column in the axial direction; and a support plate, wherein the support plate is arranged between the two mounting plates.

[0014] Furthermore, the cross-sectional shape of the mounting plate in the radial direction of the support column is triangular; the first ends of the two support plates are connected and located at a vertex of the mounting plate, and the second ends of the two support plates extend along two sides of the mounting plate respectively; a clearance opening is formed between the second ends of the two support plates and the two mounting plates, and part of the structure of the sliding part extends out of the clearance opening.

[0015] According to another aspect of the present invention, a fan assembly is provided, which includes: a bracket, the bracket having an avoidance hole; a guard plate, the guard plate is arranged around the circumference of the bracket and encloses a guide cavity, and the end of the guard plate away from the bracket forms an air outlet; a centrifugal fan, the centrifugal fan is arranged on the bracket, and the air inlet of the centrifugal fan is arranged opposite to the avoidance hole; a guide module, the guide module is connected to the bracket, a plurality of guide modules are arranged at intervals around the circumference of the centrifugal fan and / or a plurality of guide modules are stacked along the axial direction of the centrifugal fan, and the guide module is the above-mentioned guide module.

[0016] According to another aspect of the present invention, an air conditioner is provided. The air conditioner includes a fan assembly, and the fan assembly is the above-mentioned fan assembly.

[0017] By applying the technical solution of the present invention, the guide plate of the guide module can be deformed under the drive of the driving unit, thereby changing the radius of the guide plate. In this way, when the speed of the centrifugal fan changes, the radius of the guide plate can be adjusted, thereby improving the guide effect of the guide module and increasing the air output of the fan assembly when the centrifugal fan has the same speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the assembly structure of a flow guide module according to an optional embodiment of the present invention is shown;

[0020] Figure 2 Shows Figure 1 A schematic diagram of the disassembled structure of the diversion module;

[0021] Figure 3 Shows Figure 1 A schematic diagram of the assembly structure of the guide plate, the driving part, the slide rail structure, the support column and the sliding part of the guide module;

[0022] Figure 4 Shows Figure 3 Schematic diagram of the assembly structure of the driving part, the support column and the sliding part;

[0023] Figure 5 Shows Figure 4 A schematic diagram of the structure of the sliding part in FIG.

[0024] Figure 6 A schematic diagram of the disassembled structure of a fan assembly according to the present invention is shown.

[0025] The above drawings include the following reference numerals:

[0026] 1. Centrifugal fan; 2. Bracket; 201. Avoidance hole; 3. Guard plate; 301. First guard plate; 302. Second guard plate; 303. Crossbeam; 4. Guide module; 10. Guide plate; 20. Drive unit; 21. Coil spring; 30. Slide rail structure; 31. Slide rail unit; 311. Guide hole; 40. Support column; 50. Sliding unit; 51. Slider structure; 511. Slider; 52. Connecting pipe; 53. Connecting plate; 531. First plate section; 532. Second plate section; 60. Mounting plate; 601. Mounting hole; 70. Support plate; 5. Guide ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In order to solve the problem in the prior art that the air guide structure cannot be adjusted adaptively according to the rotation speed of the centrifugal fan, the present invention provides an air guide module, a fan assembly and an air conditioner.

[0029] like Figures 1 to 5 As shown, the present application provides a guide module for guiding a centrifugal fan 1, the guide module includes a guide plate 10 and a drive unit 20, along the radial direction of the centrifugal fan 1, the guide plate 10 is spaced apart from the centrifugal fan 1; the guide plate 10 is an arc-shaped structure, the guide plate 10 is protruded toward a side away from the centrifugal fan 1, the drive unit 20 is drivingly connected to the guide plate 10, so as to drive the guide plate 10 to deform so that the radius of the guide plate 10 changes with the rotation speed of the centrifugal fan 1.

[0030] In this embodiment, the guide plate 10 of the guide module can be deformed under the drive of the driving unit 20, thereby changing the radius of the guide plate 10. In this way, when the rotation speed of the centrifugal fan 1 changes, the radius of the guide plate 10 can be adjusted, thereby improving the guide effect of the guide module and increasing the air output of the fan assembly when the centrifugal fan has the same rotation speed.

[0031] like Figures 1 to 3 As shown, the guide module also includes a slide rail structure 30, a support column 40 and a sliding portion 50. The slide rail structure 30 is arranged on the surface of the guide plate 10 away from the centrifugal fan 1. The slide rail structure 30 extends along the circumference of the guide plate 10. Along the radial direction of the centrifugal fan 1, the support column 40 and the guide plate 10 are spaced apart. The support column 40 is located on the side of the guide plate 10 away from the centrifugal fan 1. Both sliding portions 50 can be pivotally arranged on the support column 40, and each sliding portion 50 includes a slider structure 51 slidably connected to the slide rail structure 30; wherein the driving portion 20 is arranged between the two sliding portions 50 to change the radius of the guide plate 10 by driving the two sliding portions 50 to move synchronously toward or away from each other. In this way, when the driving part 20 drives the two sliding parts 50 to move toward each other, the guide plate 10 is deformed and the diameter of the guide plate 10 is reduced; when the driving part 20 drives the two sliding parts 50 to move away from each other, the guide plate 10 is deformed and the radius of the guide plate 10 is increased.

[0032] like Figures 1 to 4 As shown, the driving part 20 is a coil spring 21, and the two ends of the coil spring 21 are respectively connected to the two sliding parts 50. In this way, according to the initial rotation speed of different types of centrifugal fans 1, the pre-force of the coil spring 21 is adjusted to make the wind pressure acting on the guide plate 10 and the spring force of the coil spring 21 match, so that the radius of the guide plate 10 matches the flow field of the centrifugal fan 1 at the rotation speed; when the rotation speed of the centrifugal fan 1 increases, the wind pressure acting on the guide plate 10 increases, the guide plate 10 deforms under the action of the wind pressure, and the two sliding parts 50 move in opposite directions, so that the radius of the guide plate 10 increases until the wind pressure is balanced with the force of the coil spring 21 again; when the rotation speed of the centrifugal fan 1 decreases, the wind pressure acting on the guide plate 10 decreases, and the two sliding parts 50 move in opposite directions under the action of the coil spring 21, so that the radius of the guide plate 10 decreases until the wind pressure is balanced with the force of the coil spring 21 again.

[0033] Optionally, the coil spring 21 is a tension spring.

[0034] The guide module provided by the present application adjusts the spring pre-force according to the model of the centrifugal fan 1 and is built into the guide module. The wind pressure varies with the speed of the centrifugal fan 1. Under the common coupling of the wind pressure and the spiral spring 21 of the guide module, streamline matching is automatically completed, and the radius of the guide plate 10 is adaptively adjusted.

[0035] In an optional embodiment not shown in the figure of the present application, the driving part 20 is a gas spring, and the two ends of the gas spring are respectively connected to the two sliding parts 50. The gas spring has the same function as the coil spring 21. Compared with the coil spring 21, the gas spring has the advantages of smooth movement and easy control.

[0036] In an optional embodiment not shown in the figure of the present application, the driving part 20 is a damper, and the two ends of the damper are respectively connected to the two sliding parts 50. The damper has the same function as the coil spring 21, and the damper changes according to the speed of the centrifugal fan 1 until the force provided by the damper is balanced with the wind pressure provided by the centrifugal fan 1.

[0037] In an optional embodiment not shown in the figure of the present application, the driving part 20 includes a cylinder or an oil cylinder or a motor, and the output end of the driving part 20 is drivingly connected to the sliding part 50; the guide module also includes a controller, the controller is electrically connected to the centrifugal fan 1, and the controller is electrically connected to the driving part 20 to control the radius of the guide plate 10 according to the rotation speed of the centrifugal fan 1. In this way, the controller is used to drive the sliding part 50 to slide relative to the guide plate 10, so as to accurately control the radius of the guide plate 10 according to the rotation speed of the centrifugal fan 1.

[0038] like Figures 2 to 5As shown, the sliding part 50 includes a connecting tube 52 and a connecting plate 53. The connecting tube 52 is rotatably sleeved on the supporting column 40. One end of the connecting plate 53 is connected to the outer peripheral wall of the connecting tube 52. The slider structure 51 is arranged on the other end of the connecting plate 53. In this way, the connecting plate 53 is pivotally sleeved on the supporting column 40 through the connecting tube 52. When the slider structure 51 slides relative to the slide rail structure 30, the connecting plate 53 and the connecting tube 52 rotate relative to the supporting column 40.

[0039] like Figures 1 to 3 As shown, the slide rail structure 30 includes two slide rail parts 31, which are arranged at intervals along the axial direction of the guide plate 10; each slide rail part 31 has a guide hole 311 extending along the circumferential direction of the guide plate 10; the slider structure 51 includes two sliders 511, which are respectively arranged on both sides of the connecting plate 53 along the axial direction of the support column 40, and the two sliders 511 are respectively extended into the two guide holes 311. In this way, the two sliders 511 and the two slide rail parts 31 are slidably connected, and when the sliding part 50 slides relative to the slide rail structure 30, the movement is more stable and reliable.

[0040] like Figures 2 to 5 As shown, the slider 511 is a cylinder. Thus, by optimizing the structure of the slider 511, the friction between the slider 511 and the slide rail portion 31 is reduced.

[0041] In an optional embodiment of the present application which is not shown in the figure, the slider 511 is a sphere. In this way, by further optimizing the structure of the slider 511, the friction between the slider 511 and the slide rail portion 31 is reduced.

[0042] In an optional embodiment not shown in the figure of the present application, the slider 511 is a rotating shaft, and the slider structure 51 also includes a bearing, which is sleeved on the rotating shaft and located in the guide hole 311. In this way, the friction between the slider 511 and the slide rail portion 31 is further reduced by the arrangement of the rotating shaft and the bearing.

[0043] like Figure 5 As shown, along the radial direction of the connecting tube 52, the connecting plate 53 includes a first plate segment 531 and a second plate segment 532 connected to each other; along the axial direction of the connecting tube 52, the length of the first plate segment 531 is smaller than the length of the second plate segment 532; the first plate segment 531 is connected to the outer peripheral wall of the connecting tube 52 and is located at the first end of the connecting tube 52, and a part of the structure of the second plate segment 532 extends out of the connecting tube 52 along the axial direction of the connecting tube 52; the slider structure 51 is arranged on the second plate segment 532; Figure 4 As shown, the first ends of the two connecting tubes 52 are butted together so that the two connecting plates 53 are arranged opposite to each other, and the driving part 20 is arranged between the two connecting plates 53. In this way, by optimizing the shape and size of the connecting plates 53, the two slider structures 51 of the two sliding parts 50 are both slidably connected with the two slide rail structures 30.

[0044] like Figure 1 and Figure 2 As shown, the guide module further includes a mounting plate 60 and a support plate 70. The two mounting plates 60 are respectively arranged at both ends of the support column 40 in the axial direction, and the support plate 70 is arranged between the two mounting plates 60. In this way, the guide module is connected to other structures through the mounting plate 60.

[0045] The guide module adopts a modular design. In specific implementation, multiple guide modules are stacked along the axial direction of the centrifugal fan 1, and the mounting plate 60 of one guide module is connected to the mounting plate 60 of another guide module. In this way, the multiple guide modules can be adapted to the axial size of the centrifugal fan 1, thereby improving the guide effect.

[0046] like Figure 1 and Figure 2 As shown, the cross-sectional shape of the mounting plate 60 in the radial direction of the support column 40 is a triangle; the first ends of the two support plates 70 are connected and located at a vertex of the mounting plate 60, and the second ends of the two support plates 70 extend along the two sides of the mounting plate 60 respectively; a clearance opening is formed between the second ends of the two support plates 70 and the two mounting plates 60, and part of the structure of the sliding part 50 extends out of the clearance opening. In this way, the mounting plate 60 has a reasonable shape, occupies a small space and has a stable connection.

[0047] like Figure 1 and Figure 2 As shown, the mounting plate 60 is provided with mounting holes 601, and the two ends of the support column 40 are respectively inserted into the two mounting holes 601 of the two mounting plates 60. In this way, the assembly between the mounting plate 60 and the support column 40 is convenient.

[0048] Optionally, the support column 40 is interference fit with the mounting hole 601 .

[0049] Optionally, the guide plate 10 is a plastic guide plate.

[0050] When assembling the guide module 4 provided in the present application, first connect the two sliding parts 50 to the support column 40, connect the two mounting plates 60 to the two support plates 70, then install the support column 40 between the two mounting plates 60, then install the coil spring 21 between the two connecting plates 53 of the two sliding parts 50, and then install the two sliding parts 50 on the slide rail structure 30 arranged on the guide plate 10.

[0051] The test shows that the use of the guide module 4 provided in the present application realizes adaptive adjustment of the guide system of the centrifugal fan 1 to meet the corresponding guide system required by the centrifugal fan 1 at different speeds. Compared with the traditional guide device, the air output is increased by 3.67% on average.

[0052] like Figure 6 As shown, the present application also provides a fan assembly, the fan assembly includes a centrifugal fan 1, a bracket 2, a guard plate 3 and a guide module 4, the bracket 2 has an avoidance hole 201, the guard plate 3 is arranged around the circumference of the bracket 2 and encloses a guide cavity, the end of the guard plate 3 away from the bracket 2 forms an air outlet, the centrifugal fan 1 is arranged on the bracket 2, the air inlet of the centrifugal fan 1 is arranged relative to the avoidance hole 201, the guide module 4 is connected to the bracket 2, a plurality of guide modules 4 are arranged at intervals around the circumference of the centrifugal fan 1 and / or a plurality of guide modules 4 are stacked along the axial direction of the centrifugal fan 1, and the guide module 4 is the above-mentioned guide module. The guide module 4 provided in the present application can be selected according to the actual use needs, so as to improve the guide effect of the centrifugal fan 1. The radius of the guide plate 10 of the guide module provided in the present application can be adjusted with the rotation speed of the centrifugal fan 1, so as to help increase the air output of the fan assembly under the same rotation speed of the centrifugal fan 1.

[0053] exist Figure 6 In the specific embodiment shown, two flow guide modules 4 are stacked axially along the centrifugal fan 1 to form a group of flow guide components, and four groups of flow guide components are arranged at equal intervals around the circumference of the centrifugal fan 1 to guide the centrifugal fan 1.

[0054] like Figure 6 As shown, the fan assembly also includes a guide ring 5, which is installed on the bracket 2 and located at the avoidance hole. In this way, the guide ring is used to guide the gas entering the centrifugal fan 1 through the avoidance hole, which is beneficial to further improve the performance of the fan assembly.

[0055] like Figure 6 As shown, the guard plate 3 includes two first guard plates 301 and two second guard plates 302 that are oppositely arranged, thereby forming a rectangular fan air cavity; the guard plate 3 also includes two cross beams 303, which are respectively arranged on the two first guard plates 301 for connecting with other structures.

[0056] Optionally, each mounting plate 60 is provided with at least one first connection hole, and the fan assembly further includes a connection piece, and when a plurality of guide modules are stacked along the axial direction of the guide plate 10, the connection piece is passed through the first connection hole of one guide module and the first connection hole of another corresponding guide module to connect the two stacked guide modules together. In this way, the stacked guide modules are connected together by the connection piece, and the assembly is simple.

[0057] Optionally, the connecting member is a screw.

[0058] Optionally, the connecting members are bolts and nuts.

[0059] Optionally, each mounting plate 60 is provided with at least one first connection hole, the bracket 2 is provided with at least one second connection hole, and the fan assembly further comprises at least one connecting member, which is passed through the first connection hole and the second connection hole corresponding thereto to fix the air guide module with the bracket 2. In this way, the air guide module is installed on the bracket 2 through the connecting member, and the assembly is simple.

[0060] The flow guide module 4 provided in the present application adopts modular packaging, can be freely matched and assembled according to different air ducts, has strong interchangeability, is suitable for fans of different models, and can be placed in the fan cavity. The flow guide module can be freely assembled and combined according to the size of the air duct. The flow guide module 4 provided in the present application is more flexible, efficient, and highly modular in its control, and can be freely matched with various air duct structures and fan models.

[0061] Due to the different fan speeds, the flow field profiles are different, and different profiles require different parameters of the guide structure to adapt to the matching. The centrifugal fan adopts a flow field with large rounded corners on all sides, which is fully developed, with reasonable transition and relatively uniform. When the fan speed increases further, a larger flow field space is required to form the most suitable flow field, and the parameters of the guide structure should change accordingly. Similarly, when the fan speed decreases, a smaller space is required to avoid the generation of backflow, and the parameters of the guide structure should change accordingly so that the guide plate 10 reaches the most suitable guide diameter for the flow field. After calculation, it is known that as the speed of the centrifugal fan 1 increases and the wind pressure increases, the fillet diameter of the guide module 4 increases nonlinearly, and it can be matched in time to achieve the highest efficiency. The flow rate of the whole machine after adaptive matching can be increased by 0.8-1.2%, and the data is shown in the following table.

[0062]

[0063] The present application also provides an air conditioner, the air conditioner includes a fan assembly, and the fan assembly is the above-mentioned fan assembly. When the rotation speed of the centrifugal fan 1 of the fan assembly changes, the radius of the guide plates 10 of the multiple guide modules of the fan assembly changes with the rotation speed of the centrifugal fan 1, which is beneficial to improving the performance of the fan assembly, and further beneficial to improving the performance of the air conditioner.

[0064] The resistance inside the fan cavity of the air conditioner has a great impact on the overall capacity of the air conditioner. By optimizing the flow diversion of the airflow in the fan cavity, reducing the internal resistance of the fan cavity, and increasing the air volume, it is of great help to the overall capacity and structural compactness of the air conditioner. The fan assembly provided in the present application guides the centrifugal fan 1 through multiple guide modules 4, and changes the air duct flow direction of the shaft-in and shaft-out of the traditional centrifugal fan 1 to the air duct flow direction of the shaft-in and shaft-out. By optimizing the structure of the guide module 4, it is helpful to reduce energy loss, reduce flow resistance and increase air volume.

[0065] Since the centrifugal fan 1 requires different guide profiles as the wind speed changes, the guide module 4 provided in the present application has good adaptability and can match the rotation speed of the centrifugal fan 1 in real time. The radius of the guide plate 10 of the guide module 4 can be adaptively adjusted according to the wind speed without changing the wind cavity shell. The guide module 4 has a simple structure, is easy to process, and has good interchangeability.

[0066] The guide module 4 provided in the present application has good matching and high real-time efficiency; the guide module 4 has a simple structure and is easy and convenient to maintain and disassemble; the guide module 4 is arranged in the rectangular air cavity of the centrifugal fan 1 to guide its radial air outlet so that it is discharged from the air cavity along the axial direction of the centrifugal fan 1, which is beneficial to reducing wind resistance; the radius of the guide plate 10 of the guide module 4 changes with the rotation speed of the centrifugal fan 1, which is beneficial to increase the air outlet volume under the same rotation speed of the centrifugal fan 1.

[0067] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0068] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0069] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0070] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0071] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flow guide module, used for guiding flow of a centrifugal fan (1), characterized in that: The flow guide module comprises: a guide plate (10), arranged in a radial direction of the centrifugal fan (1), the guide plate (10) being spaced apart from the centrifugal fan (1); the guide plate (10) being an arc-shaped structure, the guide plate (10) being arranged to protrude toward a side away from the centrifugal fan (1); A driving unit (20), the driving unit (20) being drivingly connected to the guide plate (10) so as to drive the guide plate (10) to deform, thereby causing the radius of the guide plate (10) to change along with the rotation speed of the centrifugal fan (1); a slide rail structure (30), the slide rail structure (30) being arranged on a surface of the guide plate (10) away from the centrifugal fan (1), the slide rail structure (30) extending along the circumference of the guide plate (10); a support column (40), arranged in a radial direction of the centrifugal fan (1), the support column (40) being spaced apart from the guide plate (10), the support column (40) being located on a side of the guide plate (10) away from the centrifugal fan (1); A sliding part (50), wherein both of the sliding parts (50) are pivotally arranged on the support column (40), and each of the sliding parts (50) comprises a slider structure (51) slidably connected to the slide rail structure (30); The driving part (20) is arranged between the two sliding parts (50) so as to change the radius of the guide plate (10) by driving the two sliding parts (50) to move synchronously towards or away from each other.

2. The flow guide module according to claim 1, characterized in that: The driving part (20) is a coil spring (21), and two ends of the coil spring (21) are respectively connected to the two sliding parts (50); or The driving part (20) is a gas spring, and two ends of the gas spring are respectively connected to the two sliding parts (50); or The driving part (20) is a damper, and two ends of the damper are respectively connected to the two sliding parts (50).

3. The flow guide module according to claim 1, characterized in that: The driving part (20) comprises an air cylinder or an oil cylinder or a motor, and an output end of the driving part (20) is drivingly connected to the sliding part (50); the flow guide module further comprises: A controller, the controller being electrically connected to the centrifugal fan (1), and the controller being electrically connected to the driving unit (20) so as to control the radius of the guide plate (10) according to the rotation speed of the centrifugal fan (1).

4. The flow guide module according to claim 1, characterized in that: The sliding part (50) comprises: A connecting pipe (52), the connecting pipe (52) being rotatably sleeved on the supporting column (40); A connecting plate (53), one end of which is connected to the outer peripheral wall of the connecting tube (52), and the slider structure (51) is arranged on the other end of the connecting plate (53).

5. The flow guide module according to claim 4, characterized in that: The slide rail structure (30) comprises two slide rail parts (31), and the two slide rail parts (31) are arranged at intervals along the axial direction of the guide plate (10); each of the slide rail parts (31) has a guide hole (311) extending along the circumferential direction of the guide plate (10); The slider structure (51) comprises two sliders (511). Along the axial direction of the support column (40), the two sliders (511) are respectively arranged on both sides of the connecting plate (53), and the two sliders (511) respectively extend into the two guide holes (311).

6. The flow guide module according to claim 5, characterized in that: The slider (511) is a cylinder; or The slider (511) is a sphere; or The slider (511) is a rotating shaft, and the slider structure (51) further comprises a bearing, wherein the bearing is sleeved on the rotating shaft and located in the guide hole (311).

7. The flow guide module according to claim 4, characterized in that: Along the radial direction of the connecting tube (52), the connecting plate (53) comprises a first plate segment (531) and a second plate segment (532) connected to each other; along the axial direction of the connecting tube (52), the length of the first plate segment (531) is smaller than the length of the second plate segment (532); the first plate segment (531) is connected to the outer peripheral wall of the connecting tube (52) and is located at the first end of the connecting tube (52), and a part of the structure of the second plate segment (532) extends out of the connecting tube (52) along the axial direction of the connecting tube (52); the sliding block structure (51) is arranged on the second plate segment (532); The first ends of the two connecting pipes (52) are butt-jointed so that the two connecting plates (53) are arranged opposite to each other; and the driving part (20) is arranged between the two connecting plates (53).

8. The flow guide module according to claim 1, characterized in that: The flow guide module also includes: A mounting plate (60), wherein two mounting plates (60) are respectively arranged at two ends of the support column (40) in the axial direction; A support plate (70), wherein the support plate (70) is arranged between the two mounting plates (60).

9. The flow guide module according to claim 8, characterized in that: The cross-sectional shape of the mounting plate (60) in the radial direction of the support column (40) is triangular; the first ends of the two support plates (70) are connected and located at a vertex of the mounting plate (60), and the second ends of the two support plates (70) extend along two sides of the mounting plate (60) respectively; a clearance opening is formed between the second ends of the two support plates (70) and the two mounting plates (60), and a part of the structure of the sliding part (50) extends out of the clearance opening.

10. A fan assembly, characterized in that: The fan assembly comprises: A bracket (2), wherein the bracket (2) has an avoidance hole (201); A guard plate (3), the guard plate (3) being arranged around the circumference of the bracket (2) and enclosing a flow guide cavity, and an end of the guard plate (3) away from the bracket (2) forming an air outlet; A centrifugal fan (1), the centrifugal fan (1) being arranged on the bracket (2), and the air inlet of the centrifugal fan (1) being arranged opposite to the avoidance hole (201); A flow guide module (4), the flow guide module (4) is connected to the bracket (2), a plurality of the flow guide modules (4) are arranged at intervals around the circumference of the centrifugal fan (1) and / or a plurality of the flow guide modules (4) are stacked along the axial direction of the centrifugal fan (1), and the flow guide module (4) is the flow guide module according to any one of claims 1 to 9.

11. An air conditioner, comprising a fan assembly, characterized in that: The fan assembly is the fan assembly described in claim 10.

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