Cyclone separator and its control method, heat exchange and dehumidification device

Abstract

This invention provides a cyclone separator and its control method, as well as a heat exchange and dehumidification device. The cyclone separator includes an inlet pipe with a stator impeller at the airflow inlet. The stator impeller includes a hub and multiple swirl blades connected to the outer peripheral wall of the hub and extending radially outward along the hub. Each swirl blade has an inflow side near the airflow inlet and an outflow side away from the airflow inlet. Each swirl blade also includes a rotating tail blade on the outflow side away from the inflow side. Each rotating tail blade can be controlled to rotate by a preset angle to change the blade outlet geometry angle. This invention achieves a balance between dehumidification efficiency and flow resistance by controlling the rotation direction of the rotating tail blades to change the blade outlet geometry angle according to different airflow dehumidification requirements.

Description

Technical Field

[0001] This invention belongs to the field of water separator design technology, specifically relating to a cyclone separator and its control method, and a heat exchange and dehumidification device. Background Technology

[0002] Cyclone separators can be used to control the humidity of the airflow at the outlet of a heat exchanger. Typically, a cyclone separator consists of a stator impeller, a swirling chamber, a water distribution chamber, and baffles. Moist air flows in through the inlet of the stator impeller, where it generates a strong swirling flow and enters the swirling chamber. Liquid (water) in the air is thrown against the wall of the swirling chamber by centrifugal force, forming a liquid film, which then flows into the water distribution chamber with the airflow. The liquid is discharged through the drain hole in the water distribution chamber.

[0003] The water separation efficiency of a cyclone separator is closely related to the strength of the swirling flow generated by the airflow passing through the stator impeller. Reducing the outlet geometry angle of the stator blades can increase the swirling intensity, but it will also increase the flow resistance. When the inlet air humidity is low, the required water separation efficiency is low, while when the air humidity is high, the required water separation efficiency is high. Existing cyclone separators find it difficult to simultaneously meet the performance requirements of water separation efficiency and flow resistance. Summary of the Invention

[0004] Therefore, the present invention provides a cyclone separator and its control method, as well as a heat exchange and dehumidification device, which can solve the technical problems in the prior art where the water separation efficiency and flow resistance of the cyclone separator cannot be adjusted according to the air humidity, and the water separation efficiency and flow resistance cannot be simultaneously achieved.

[0005] To address the aforementioned problems, this invention provides a cyclone separator, comprising an inlet pipe, a stator impeller at the airflow inlet of the inlet pipe, the stator impeller comprising a hub and a plurality of swirl blades connected to the outer peripheral wall of the hub and extending radially outward along the hub, each swirl blade having an inflow side near the airflow inlet and an outflow side away from the airflow inlet, each swirl blade further comprising a rotating tail blade on the side of each outflow side away from the inflow side, each rotating tail blade being controllable to rotate by a preset angle to change the blade outlet geometry angle of the swirl blade.

[0006] In some embodiments, each of the swirl blades is connected between the hub and the inner wall of the inlet pipe.

[0007] In some embodiments, the rotating tail vane has an assembly hole in which a rotating shaft is inserted. The inner end of the rotating shaft is rotatably connected to the outer circumferential wall of the hub, and the outer end of the rotating shaft is rotatably connected to the wall of the inlet pipe and extends beyond the wall of the inlet pipe. The device also includes a driving component located outside the pipe wall. The driving component can drive each rotating shaft to rotate, thereby causing the rotating tail vane to rotate by the preset angle.

[0008] In some embodiments, the cross-section of the position where the rotating shaft mates with the assembly hole is rectangular.

[0009] In some embodiments, the drive component includes a driven gear connected to the portion of each of the rotating shafts extending beyond the wall of the inlet pipe, a ring gear fitted radially outward of the outer circumferential wall of the inlet pipe, and a drive motor. The ring gear meshes with each of the driven gears simultaneously, and the drive motor drives the ring gear to rotate around the central axis of the inlet pipe.

[0010] In some embodiments, the hub has a central helical channel extending through both ends thereto, the helical direction of which is consistent with the swirling direction of the swirling blades.

[0011] In some embodiments, the central helical channel is formed by a helical plate connected to a central through-hole in the hub.

[0012] In some embodiments, the cyclone separator further includes a cyclone distribution pipe and a water collection and drainage pipe. The cyclone distribution pipe is connected to the airflow outlet of the inlet pipe, and the water collection and drainage pipe is connected to the airflow outlet of the cyclone distribution pipe. The flow diameter of the water collection and drainage pipe is not less than the flow diameter of the cyclone distribution pipe.

[0013] In some embodiments, a drain pipe is provided at the bottom of the water collection and drainage pipe.

[0014] In some embodiments, an air guide pipe is also connected to the airflow outlet of the water collection and drainage pipe, and a water-blocking ring is provided in the airflow inlet of the air guide pipe.

[0015] The present invention also provides a control method for the above-mentioned cyclone separator, comprising the following steps:

[0016] Obtain the airflow humidity at the airflow inlet of the inlet pipe and determine the trend of the airflow humidity change;

[0017] When the airflow humidity trend is increasing, the rotating tail blade is controlled to rotate towards the windward side closer to the swirl blade, thereby reducing the blade outlet geometry angle; or,

[0018] When the humidity of the airflow decreases, the rotating tail blade is controlled to rotate toward the side facing away from the swirl blade, so as to increase the blade outlet geometry angle.

[0019] The present invention also provides a heat exchange and dehumidification device, including a heat exchanger and the above-mentioned cyclone separator, wherein the airflow inlet of the cyclone separator is connected to the heat exchange airflow outlet of the heat exchanger.

[0020] The cyclone separator and its control method, as well as the heat exchange and dehumidification device provided by this invention, have the following beneficial effects:

[0021] A rotating tail blade is installed on the outflow side of the swirl blade to form a docking with it. Each rotating tail blade can be driven to rotate by a preset angle, thereby changing the blade outlet geometry angle of each swirl blade. For example, when the humidity of the airflow increases, the rotation of each rotating tail blade is controlled to reduce the blade outlet geometry angle, so as to increase the airflow resistance and thus ensure the dehumidification effect. When the humidity of the airflow decreases, the rotation of each rotating tail blade is controlled to increase the blade outlet geometry angle, so as to reduce the resistance to the airflow and ensure the airflow flow and reduce the airflow loss. In this way, by controlling the rotation direction of the rotating tail blade to change the blade outlet geometry angle according to different airflow dehumidification requirements, the dehumidification and water separation efficiency and flow resistance are balanced.

[0022] The rotation of the shaft is driven by the drive component, which in turn drives the rotation of the rotating tail vane. The drive component is located on the outside of the pipe wall of the inlet pipe, which drives the outer end of the shaft. This reduces the obstruction to the airflow in the inlet pipe and also reduces the requirements for the waterproof performance of the drive component.

[0023] By having a ring gear mesh with each driven gear simultaneously, only one driving component is needed to drive the ring gear to rotate, thereby achieving synchronous rotation of each shaft. This ensures synchronous adjustment of the deflection angle of each rotating tail blade, resulting in better synchronization. It also reduces the number of driving components, simplifies structural design, and lowers manufacturing costs.

[0024] The hub is objectively designed as a cylindrical structure, and a spiral plate is set in its central through hole to form a central spiral channel. This can significantly increase the air intake volume, reduce the axial dimension of the parts, and, more importantly, enhance the swirling effect of the stator impeller on the fluid, improve water separation efficiency, and reduce flow resistance. Attached Figure Description

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural schematic diagram of the cyclone separator according to an embodiment of the present invention (in an exploded state);

[0027] Figure 2 yes Figure 1 A schematic diagram (cross-section) of the internal structure of the cyclone separator in its assembled state;

[0028] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0029] Figure 4 yes Figure 1 A three-dimensional structural diagram of the inlet duct and its internal stator impeller, with the rotating tail blades omitted in the diagram;

[0030] Figure 5 yes Figure 2 A three-dimensional structural diagram of the rotating tail blade;

[0031] Figure 6 yes Figure 2 A three-dimensional structural diagram of the rotating shaft in the diagram;

[0032] Figure 7 yes Figure 1 A three-dimensional structural diagram of the vortex water distribution pipe in the middle;

[0033] Figure 8 yes Figure 1 A three-dimensional structural diagram of the water collection and drainage pipes in the middle;

[0034] Figure 9 yes Figure 1 A three-dimensional structural diagram of the water-retaining ring in the middle;

[0035] Figure 10 A schematic diagram of the airflow streamlines of a cyclone separator that does not have a central spiral channel inside the hub and does not have a rotating tail blade.

[0036] Figure 11 This is a schematic diagram of the airflow streamline when the blade outlet geometry angle is large in a cyclone separator with a central spiral channel and rotating tail blades in a hub according to an embodiment of the present invention.

[0037] Figure 12This is a schematic diagram of the airflow streamline in a cyclone separator with a central spiral channel and rotating tail blades in an embodiment of the present invention, where the blade outlet geometry angle is relatively large and the airflow streamline is small.

[0038] The attached figures are labeled as follows:

[0039] 1. Inlet pipe;

[0040] 2. Stator impeller; 21. Hub; 211. Central spiral channel; 212. Spiral plate; 22. Swirl blades; 23. Rotating tail blade; 231. Assembly hole; 24. Shaft; 241. Driven gear;

[0041] 3. Swirl-flow water distribution pipe;

[0042] 4. Water collection and drainage pipes; 41. Drainage pipes;

[0043] 5. Air duct; 51. Water baffle ring. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0046] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90°, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0047] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0048] See Figure 1 and Figure 12 As shown, according to an embodiment of the present invention, a cyclone separator is provided, specifically applied to the outlet side of a heat exchanger, to dehumidify the airflow after heat exchange with the heat exchanger. It includes an inlet pipe 1, with a stator impeller 2 at the airflow inlet of the inlet pipe 1. The stator impeller 2 includes a hub 21 and a plurality of swirl blades 22 connected to the outer peripheral wall of the hub 21 and extending radially outward along the hub 21. When the airflow passes through each of the swirl blades 22, it is guided to form a swirling flow. Each swirl blade 22 has an inlet side near the airflow inlet and an outlet side away from the airflow inlet. The swirl blades 22 have a windward and a leeward side. Each swirl blade 22 also includes a rotating tail blade 23 located on the side away from the inflow side of each outlet side. Each rotating tail blade 23 can be controlled to rotate by a preset angle to change the blade outlet geometry angle of the swirl blade 22. It is understood that the aforementioned rotating tail blades 23 and swirl blades 22 can be directly connected or can be independent components arranged adjacent to each other. However, regardless of the relationship, the gap between the two near each other should be as small as possible, and the air guiding surfaces of the two should be smoothly connected.

[0049] In this technical solution, a rotating tail blade 23 is provided on the outflow side of the swirl blade 22, which can dock with it. Each rotating tail blade 23 can be driven to rotate by a preset angle, thereby changing the blade outlet geometry angle of each swirl blade 22. For example, when the humidity of the airflow increases, the rotating tail blade 23 is controlled to rotate to reduce the blade outlet geometry angle, so as to increase the airflow resistance and thus ensure the dehumidification effect. When the humidity of the airflow decreases, the rotating tail blade 23 is controlled to rotate to increase the blade outlet geometry angle, which can reduce the resistance to the airflow and ensure that the airflow flow is reduced and the airflow loss is reduced. In this way, by controlling the rotation direction of the rotating tail blade 23 to change the blade outlet geometry angle according to different airflow dehumidification requirements, the dehumidification and water separation efficiency and flow resistance are balanced.

[0050] The aforementioned stator impeller 2 can exist independently of the inlet pipe 1; that is, the stator impeller 2 can be assembled inside the inlet pipe 1. However, in a preferred embodiment, each of the swirling blades 22 is connected between the hub 21 and the inner wall of the inlet pipe 1, meaning that each swirling blade 22 and the inlet pipe 1 are a single unit. This reduces the number of parts and simplifies the assembly process. Thus, the aforementioned inlet pipe 1 and stator impeller 2 can be integrally molded using injection molding, making manufacturing very simple and convenient.

[0051] In one specific embodiment, the rotating tail vane 23 has an assembly hole 231, into which a rotating shaft 24 is inserted. The inner end of the rotating shaft 24 is rotatably connected to the outer circumferential wall of the hub 21, and the outer end of the rotating shaft 24 is rotatably connected to the pipe wall of the inlet pipe 1 and extends beyond the pipe wall of the inlet pipe 1. It also includes a driving component (not shown in the figure, not labeled), which is located outside the pipe wall and can drive each of the rotating shafts 24 to rotate, thereby driving... The rotating tail blade 23 rotates by the preset angle. Specifically, for example, a first groove (or through hole) is provided on the outer peripheral wall of the hub 21 at a position corresponding to each swirl blade 22, and a first through hole is provided on the pipe wall of the inlet pipe 1 at a position corresponding to each swirl blade 22. The cross-sections of both ends of the rotating shaft 24 are circular, thus forming a rotating connection between the rotating shaft 24, the inlet pipe 1, and the hub 21. In order to facilitate the assembly of the rotating shaft 24, the diameter of the first through hole should not be less than the maximum radial dimension of the rotating shaft 24.

[0052] In this technical solution, the rotating shaft 24 is driven by the driving component, which in turn drives the rotating tail blade 23 to rotate. The driving component is located outside the pipe wall of the inlet pipe 1 and drives the outer end of the rotating shaft 24, which can reduce the obstruction of the airflow in the inlet pipe 1 and reduce the requirements for the waterproof performance of the driving component.

[0053] In one specific embodiment, the cross-section of the position where the rotating shaft 24 mates with the assembly hole 231 is rectangular, for example, it can be square, which can ensure the rotational synchronization of the rotating tail blade 23 while achieving connection.

[0054] In some embodiments, a set of drive components, such as rotary motors, can be provided for the outer ends of each rotating shaft 24 to control the rotation angle of each rotating shaft 24. However, this method is relatively complex in structural design, requires good rotational synchronization of each motor, and has high manufacturing cost. Therefore, as a preferred implementation, the drive components include driven gears 241 connected to the portion of each rotating shaft 24 extending outside the pipe wall of the inlet pipe 1, a ring gear (not shown in the figure) fitted on the radially outer side of the outer circumferential wall of the inlet pipe 1, and a drive motor (not shown in the figure). The ring gear meshes with each driven gear 241 simultaneously, and the drive motor is used to drive the ring gear to rotate around the central axis of the inlet pipe 1. The aforementioned drive components can be, for example, rotary motors, and the aforementioned driven gears 241 can be interference-fitted onto the outer ends of the rotating shafts 24.

[0055] In this technical solution, by having a ring gear mesh with each driven gear 241 simultaneously, only one driving component is needed to drive the ring gear to rotate, thereby achieving synchronous rotation of each rotating shaft 24. This ensures synchronous adjustment of the deflection angle of each rotating tail blade 23, resulting in better synchronization. Furthermore, it reduces the number of driving components, simplifies structural design, and lowers manufacturing costs.

[0056] In one specific implementation, the fixing component of the aforementioned drive component (e.g., the mounting bracket of the motor) can be fixedly connected to the outer wall of the inlet pipe 1. At the same time, the ring gear is slidably connected to the outer circumference of the inlet pipe 1 through a corresponding slide rail structure to ensure the reliable and stable rotation of the ring gear. The aforementioned slide rail structure is understood to be ring-shaped. For example, a convex ring is provided on the outer wall of the inlet pipe 1, and the inner ring surface of the ring gear has an annular groove that slides with the convex ring. Ideally, a ball bearing is provided between the ring wall of the convex ring and the annular groove to reduce sliding friction. It is understood that, in order to facilitate the assembly and connection between the convex ring and the annular groove, the ring gear is assembled from two semi-circular arc segments that are symmetrically interlocked.

[0057] In some embodiments, the hub 21 has a central helical channel 211 extending through both ends thereto, the helical direction of the central helical channel 211 being consistent with the swirling direction of the swirling blade 22. In a specific embodiment, the central helical channel 211 is formed by a helical plate 212 connected to the central through hole of the hub 21.

[0058] In this technical solution, the hub 21 is objectively designed as a cylindrical structure, and a spiral plate 212 is set in its central through hole to form a central spiral channel 211, which can significantly improve the air intake volume and reduce the axial dimension of the parts. More importantly, it strengthens the swirling effect of the stator impeller 2 on the fluid, improves the water separation efficiency and reduces the flow resistance.

[0059] In some embodiments, the cyclone separator further includes a cyclone water distribution pipe 3 and a water collection and drainage pipe 4. The cyclone water distribution pipe 3 is connected to the airflow outlet of the inlet pipe 1. The airflow swirling through the stator impeller 2 enters the cyclone water distribution pipe 3, and the liquid water in the airflow is thrown onto the inner wall surface of the cyclone water distribution pipe 3 under the action of centrifugal force to form a liquid film, thus completing the separation of water from the airflow. The water collection and drainage pipe 4 is connected to the airflow outlet of the cyclone water distribution pipe 3. At this time, the liquid water on the inner wall surface of the cyclone water distribution pipe 3... Driven by a high-speed airflow, the membrane is drawn into the water collection and drainage pipe 4. The flow diameter of the water collection and drainage pipe 4 is not less than that of the vortex water distribution pipe 3. In a specific embodiment, the flow diameter of the water collection and drainage pipe 4 first increases and then decreases along the flow direction of the airflow, thus forming a cavity structure that is low in the middle and high at both ends. This ensures that the liquid membrane is efficiently collected and discharged here, while also effectively preventing the water collected in this pipe from being further driven into subsequent pipes.

[0060] As a preferred embodiment, the bottom of the water collection and drainage pipe 4 is provided with a drain pipe 41, through which the water in the water collection and drainage pipe 4 can be discharged to a preset location in a timely manner, such as an outdoor environment or a water container.

[0061] In another feasible embodiment, the airflow outlet of the water collection and drainage pipe 4 is also connected to an air guide pipe 5, so as to guide the airflow after heat exchange and dehumidification to the target area. In a preferred embodiment, a water baffle ring 51 is provided in the airflow inlet of the air guide pipe 5. The water baffle ring 51 is located at the airflow outlet of the water collection and drainage pipe 4 and the airflow inlet of the air guide pipe 5, which can further prevent the water collected in the water collection and drainage pipe 4 from entering the air guide pipe 5 under the action of high-speed airflow.

[0062] Figures 10 to 12 The diagrams show the streamlines of the cyclone separator under different conditions (or in different technical solutions). Figure 10 As shown, without the central helical channel, the maximum circumferential velocity at the separator outlet is 16.9 m / s, and the pressure loss is 72.9 Pa; with the central helical channel, the maximum circumferential velocity at the separator outlet increases to 18.3 m / s, and the pressure loss decreases to 68.4 Pa. Figure 11As shown; after reducing the blade outlet geometry angle, the maximum circumferential velocity at the separator outlet increases to 21.8 m / s, but the pressure loss increases to 103.4 Pa, as... Figure 12 As shown.

[0063] According to an embodiment of the present invention, a control method for the above-described cyclone separator is also provided, comprising the following steps:

[0064] The humidity of the airflow at the airflow inlet of the inlet pipe 1 is obtained and the trend of the airflow humidity change is determined. Specifically, a corresponding humidity sensor is set at the airflow inlet of the inlet pipe 1. The humidity sensor samples and detects the real-time humidity of the airflow once at a preset time interval and feeds it back to the corresponding control component. The control component compares the magnitude of the received real-time humidity of the two consecutive times. If the current real-time humidity is higher than the next real-time humidity, it indicates that the trend of the airflow humidity change is decreasing. Otherwise, if the current real-time humidity is lower than the next real-time humidity, it indicates that the real-time trend of the airflow humidity change is increasing. Other feasible methods can also be used to determine the aforementioned trend. These methods will not be listed one by one in this invention. In principle, all existing methods that can achieve this purpose are acceptable.

[0065] When the humidity of the airflow shows an increasing trend, it indicates that the dehumidification efficiency of the cyclone separator is low and needs to be improved. Therefore, the rotating tail blade 23 can be controlled to rotate towards the windward side closer to the swirl blade 22 to reduce the blade outlet geometry angle. At this time, the airflow resistance inside the separator is increased, but the water separation effect is greatly improved; or,

[0066] When the humidity of the airflow decreases, it indicates that the dehumidification efficiency of the cyclone separator is high. It is possible to consider increasing the air volume while ensuring the dehumidification effect. Therefore, the rotating tail blade 23 can be controlled to rotate towards the side away from the windward side of the swirl blade 22 to increase the blade outlet geometric angle. At this time, the airflow resistance in the separator is reduced, the airflow loss in the separator is small, and the airflow after dehumidification is increased.

[0067] According to an embodiment of the present invention, a heat exchange dehumidification device is also provided, including a heat exchanger (not shown in the figure) and the aforementioned cyclone separator. The airflow inlet of the cyclone separator is connected to the outlet of the heat exchange airflow of the heat exchanger, that is, the cyclone separator can separate the moisture in the airflow after heat exchange by the heat exchanger, thereby realizing the control and adjustment of the humidity of the heat exchange airflow. A rotating tail blade 23 is provided on the outflow side of the swirl blade 22, which can form a docking with it. Each rotating tail blade 23 can be driven to rotate by a preset angle, thereby changing the blade outlet geometric angle of each swirl blade 22. For example, when the humidity of the airflow increases, the rotation of each rotating tail blade 23 is controlled to reduce the blade outlet geometric angle, so as to increase the airflow resistance and thus ensure the dehumidification effect; while when the humidity of the airflow decreases, the rotation of each rotating tail blade 23 is controlled to increase the blade outlet geometric angle, which can reduce the resistance to the airflow and ensure that the airflow flow is reduced and the airflow loss is reduced. In this way, by controlling the rotation direction of the rotating tail blade 23 to change the blade outlet geometric angle according to different airflow dehumidification requirements, a balance between dehumidification efficiency and flow resistance is achieved.

[0068] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0069] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A cyclonic separator comprising: The application relates to a flow inlet pipe (1) provided with a stator impeller (2) at an air flow inlet of the flow inlet pipe (1), the stator impeller (2) comprising a hub (21) and a plurality of swirl vanes (22) connected to the outer peripheral wall of the hub (21) and extending radially outwardly along the hub (21), each of the swirl vanes (22) having an inlet side edge close to the air flow inlet side and an outlet side edge away from the air flow inlet side, and each of the swirl vanes (22) further comprising a rotating tail vane (23) at a side of each of the outlet side edges away from the inlet side edge, each of the rotating tail vanes (23) being capable of being controlled to rotate by a preset angle to change the blade outlet geometric angle of the swirl vane (22); the hub (21) is provided with a central spiral channel (211) penetrating through both ends of the hub (21), and the spiral direction of the central spiral channel (211) is consistent with the swirl direction of the swirl vane (22).

2. The cyclonic separator of claim 1, wherein Each of the swirl vanes (22) is connected between the hub (21) and the inner wall of the flow inlet pipe (1).

3. The cyclonic separator of claim 1, wherein The rotating tail vane (23) is provided with an assembly hole (231), a rotating shaft (24) is inserted into the assembly hole (231), the inner end of the rotating shaft (24) is rotationally connected to the outer peripheral wall of the hub (21), the outer end of the rotating shaft (24) is rotationally connected to the pipe wall of the flow inlet pipe (1) and extends out of the pipe wall of the flow inlet pipe (1), and the rotating shaft (24) further comprises a driving component, the driving component is located outside the pipe wall, and the driving component is capable of driving each of the rotating shafts (24) to rotate and further drives the rotating tail vane (23) to rotate by the preset angle.

4. The cyclonic separator of claim 3, wherein The position where the rotating shaft (24) cooperates with the assembly hole (231) has a rectangular cross section.

5. The cyclonic separator of claim 3, wherein The driving component comprises a driven gear (241) connected to the part of each of the rotating shafts (24) extending out of the pipe wall of the flow inlet pipe (1), an annular gear sleeved on the radially outer side of the outer peripheral wall of the flow inlet pipe (1), and a driving motor, the annular gear is engaged with each of the driven gears (241), and the driving motor is used for driving the annular gear to rotate around the central axis of the flow inlet pipe (1).

6. The cyclonic separator of claim 1, wherein The central spiral channel (211) is formed by a spiral plate (212) connected to the central through hole of the hub (21).

7. The cyclonic separator of claim 1, wherein The application further relates to a swirl water distribution pipe (3) connected to the air flow outlet of the flow inlet pipe (1) and a water collecting and discharging pipe (4) connected to the air flow outlet of the swirl water distribution pipe (3), and the pipe flow diameter of the water collecting and discharging pipe (4) is not less than the flow diameter of the swirl water distribution pipe (3).

8. The cyclonic separator of claim 7, wherein, The bottom of the water collecting and discharging pipe (4) is provided with a water discharging pipe (41).

9. The cyclonic separator of claim 7, wherein, The air flow outlet of the water collecting and discharging pipe (4) is further connected with a wind guide pipe (5), and the air flow inlet of the wind guide pipe (5) is provided with a water blocking ring (51).

10. A method of controlling a cyclone separator as claimed in any one of claims 1 to 9, characterized in that The application further relates to a method for controlling the stator impeller (2) of the flow inlet pipe (1), and the method comprises the following steps: The air flow humidity at the air flow inlet of the flow inlet pipe (1) is obtained, and the change trend of the air flow humidity is determined. when the change trend of the air flow humidity is increasing, the rotating moving tail vane (23) is controlled to rotate towards the side close to the windward surface of the rotating flow vane (22) to reduce the vane outlet geometric angle; or, when the change trend of the air flow humidity is decreasing, the rotating moving tail vane (23) is controlled to rotate towards the side away from the windward surface of the rotating flow vane (22) to increase the vane outlet geometric angle.

11. A heat-recovery dehumidifying device, characterized by The cyclone separator according to any one of claims 1 to 9, wherein the heat exchanger is provided with a heat exchange air flow inlet and a heat exchange air flow outlet, and the cyclone separator is provided with a gas flow inlet communicated with the heat exchange air flow outlet of the heat exchanger.

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