Fan blade structure, fan and control method

Abstract

The invention provides a fan blade structure, a fan and a control method, the fan blade structure comprises a fan blade component which is rotatably arranged, and a cavity is formed in the fan blade component; the liquid supply structure is connected with the fan blade component so as to inject fluid into the cavity; and the control module is in signal connection with the liquid supply structure, and the control module controls the liquid supply structure to inject fluid into the cavity according to the icing condition of the fan blade component so that the fan blade component can be heated through the fluid, and the fan blade component can be heated through the fluid. According to the fan blade structure, the technical problem that in the prior art, fan blades are prone to freezing during low-temperature operation is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, and in particular to a fan blade structure, a fan and a control method. Background Art

[0002] When the fan is running in winter, the low temperature will cause frost and ice to form on the fan blades. Since the location of the frost is uneven, it will affect the dynamic balance of the motor, aggravate the vibration of the fan, and increase the noise; on the one hand, it affects the performance of the fan, and on the other hand, it affects the stability of the fan.

[0003] Therefore, the prior art needs to be further developed. Summary of the invention

[0004] The purpose of the present invention is to overcome the above technical deficiencies and provide a fan blade structure, a fan and a control method to solve the technical problem in the related art that the fan blades are prone to freezing when running at low temperatures.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a fan blade structure is provided, comprising: A fan blade component is rotatably arranged, and has a cavity inside the fan blade component; a liquid supply structure, the liquid supply structure being connected to the fan blade component to inject fluid into the cavity; A control module is connected to the liquid supply structure signal, and the control module controls the liquid supply structure to inject fluid into the cavity according to the icing condition of the fan blade component, so as to heat the fan blade component through the fluid.

[0006] Furthermore, the fan blade component includes: a blade, wherein the cavity is disposed within the blade; A shaft component, the outer side of which is connected to the blades, a connecting channel is provided inside the shaft component, and a liquid inlet hole connected to the cavity is provided on the inner wall of the connecting channel.

[0007] Furthermore, the fan blade structure also includes a blocking component, and the blocking component is movably arranged in the liquid inlet hole to open or block the liquid inlet hole.

[0008] Furthermore, the fan blade structure also includes an electromagnetic device, which is inserted in the connecting channel; the electromagnetic device is connected to the control module signal, and the control module controls the electromagnetic device to attract the blocking component.

[0009] Furthermore, the electromagnetic device comprises: A connecting shaft, the connecting shaft being inserted into the communicating passage; The suction part is arranged on the outer surface of the connecting shaft, and generates a gravitational force to attract the blocking component so that the blocking component is close to the suction part.

[0010] Furthermore, there are multiple liquid inlet holes, and the multiple liquid inlet holes are arranged around the connecting channel; there are multiple blocking components, and the multiple blocking components are arranged one-to-one with the multiple liquid inlet holes; there are multiple suction parts, and the multiple suction parts are arranged around the connecting shaft, and the multiple suction parts are arranged one-to-one with the multiple blocking parts.

[0011] Further, The blocking component is a spherical structure; and / or, The liquid inlet hole comprises a first liquid inlet hole and a second liquid inlet hole connected to each other; the first liquid inlet hole is located on a side of the second liquid inlet hole close to the connecting channel, and the inner diameter of the first liquid inlet hole is larger than the inner diameter of the second liquid inlet hole.

[0012] Furthermore, the fan blade structure also includes a bearing component, the bearing component is arranged in the connecting channel, and the bearing component is sleeved on the connecting shaft.

[0013] Furthermore, a partition is provided at the end of the communication channel, and a mounting channel for mounting a motor shaft is provided on a side of the partition away from the communication channel.

[0014] Furthermore, the control module includes an infrared sensor, and the infrared sensor is used to emit infrared rays to the fan blade component; the control module determines the icing condition of the fan blade component according to the light reflected from the surface of the fan blade component.

[0015] A fan comprises a fan blade structure, wherein the fan blade structure is the above-mentioned fan blade structure.

[0016] Furthermore, the fan comprises: Motor; A fan blade component, wherein the fan blade component is connected to the motor; A guide ring is provided with a guide channel inside the guide ring, the fan blade component is provided corresponding to the guide channel, and an infrared sensor for sensing the icing condition of the fan blade component is provided on the guide ring.

[0017] A control method is applicable to the above-mentioned fan blade structure, and the control method comprises: Setting a first infrared sensor, and calculating the rotation period of the fan blade component by using the first infrared sensor; A second infrared sensor is provided to calculate the icing area of ​​the fan blade component through the rotation period of the fan blade component and the second infrared sensor; The liquid supply structure is controlled to introduce fluid into the cavity corresponding to the freezing area.

[0018] Furthermore, the method for calculating the rotation period of the fan blade component by the first infrared sensor includes: A mark is set on the fan blade component, and the rotation period of the fan blade component is calculated by recording the interval time between two consecutive reflections of the infrared rays emitted by the first infrared sensor by the mark.

[0019] Furthermore, the method for calculating the icing area of ​​the fan blade component by using the rotation period of the fan blade component and the second infrared sensor includes: receiving infrared light reflected by the second infrared sensor after irradiating frost on the fan blade component; calculating the position of the received infrared light in the rotation cycle; Calculate the length of time the reflected infrared light is received; The icing area is calculated based on the position of the received infrared light at the rotation period position and the time length of the received reflected infrared light.

[0020] Furthermore, the method of controlling the liquid supply structure to introduce fluid into the cavity corresponding to the icing area includes: A connecting channel is arranged in the rotating shaft component of the fan blade component, and a plurality of surrounding liquid inlet holes connected with the cavity are arranged on the inner wall of the connecting channel. The corresponding liquid inlet holes are opened at corresponding times and corresponding positions according to the icing area to allow fluid to flow into the opened liquid inlet holes.

[0021] Beneficial effects: 1. The fan blade structure of the present invention includes a fan blade component, which is rotatably arranged and has a cavity inside; a liquid supply structure, which is connected to the fan blade component to inject fluid into the cavity; and a control module, which is signal-connected to the liquid supply structure and controls the liquid supply structure to inject fluid into the cavity according to the icing condition of the fan blade component to heat the fan blade component through the fluid.

[0022] 2. The fan blade structure of the present invention reduces the impact of frost on the fan blade and keeps the fan blade balanced.

[0023] 3. The fan blade structure of the present invention is beneficial to improving the stability of the fan and preventing the fan from burning out. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a fan blade structure used in an embodiment of the present invention; Figure 2is a schematic structural diagram of a cavity of a fan blade structure used in an embodiment of the present invention; Figure 3 is a schematic structural diagram of a fan blade component of a fan blade structure adopted in an embodiment of the present invention; Figure 4 is a side view of a fan blade component of the fan blade structure adopted in an embodiment of the present invention; Figure 5 is a schematic structural diagram of a rotating shaft component of a fan blade component of a fan blade structure provided by an embodiment of the present invention; Figure 6 is a schematic structural diagram of an electromagnetic device of a fan blade structure provided by an embodiment of the present invention; Figure 7 It is a schematic diagram of the internal structure of the rotating shaft component of the fan blade structure provided by an embodiment of the present invention; Figure 8 is a schematic diagram of the external structure of the rotating shaft component of the fan blade structure provided by an embodiment of the present invention; Fig. 9 It is a structural schematic diagram of a fan provided by an embodiment of the present invention.

[0025] The above drawings include the following reference numerals: 1. Fan blade component; 11. Cavity; 12. Blade; 13. Rotating shaft component; 131. Communication channel; 132. Liquid inlet hole; 1321. First liquid inlet hole; 1322. Second liquid inlet hole; 133. Installation channel; 2. Liquid supply structure; 31. Infrared sensor; 4. Blocking component; 5. Electromagnetic device; 51. Connecting shaft; 52. Suction part; 6. Bearing component; 10. Motor; 101. Motor shaft; 20. Guide ring; 201. Guide channel. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0027] According to an embodiment of the present invention, a fan blade structure is provided, including: a fan blade component 1, which is rotatably arranged and has a cavity 11 therein; a liquid supply structure 2, which is connected to the fan blade component 1 to inject fluid into the cavity 11; and a control module, which is signal-connected to the liquid supply structure 2, and the control module controls the liquid supply structure 2 to inject fluid into the cavity 11 according to the icing condition of the fan blade component 1, so as to heat the fan blade component 1 by the fluid.

[0028] See also Figures 1 to 9 With the above arrangement, when the fan blade component 1 operates in a low-temperature environment, the control module determines whether the fan blade component 1 is frozen. When it is determined that the fan blade component 1 is frozen, the liquid supply structure 2 is controlled to pass fluid into the cavity inside the fan blade component 1, and heat is exchanged between the fluid and the surface of the fan blade component 1, thereby achieving the defrosting effect, thereby solving the technical problem in the related art that the fan blade is prone to freezing when operating at low temperatures.

[0029] Specifically, the fluid in this embodiment can be selected as hot water.

[0030] See also Figures 1 to 4 In the fan blade structure of this embodiment, the fan blade component 1 includes: a blade 12, the cavity 11 is arranged in the blade 12; a shaft component 13, the outer side of the shaft component 13 is connected to the blade 12, a connecting channel 131 is arranged in the shaft component 13, and a liquid inlet hole 132 connected with the cavity 11 is arranged on the inner wall of the connecting channel 131.

[0031] With the above arrangement, a liquid inlet hole 132 is provided in the shaft component 13 , so that the fluid enters from the liquid inlet hole 132 without damaging the structure of the blade 12 , thereby ensuring the normal operation of the blade 12 .

[0032] In the fan blade structure of this embodiment, see Figure 2 The fan blade structure also includes a blocking component 4, which is movably arranged in the liquid inlet hole 132 to open or block the liquid inlet hole 132.

[0033] With the above arrangement, when the fan blade component 1 is not frozen, the blocking component 4 blocks the liquid inlet hole 132 , and when the fan blade component 1 is frozen, the blocking component 4 opens the liquid inlet hole 132 to allow the fluid to enter the cavity 11 to complete heat exchange.

[0034] In the fan blade structure of this embodiment, see Figure 2 The fan blade structure also includes an electromagnetic device 5, which is inserted into the connecting channel 131; the electromagnetic device 5 is connected to the control module signal, and the control module controls the electromagnetic device 5 to attract the blocking component 4.

[0035] With the above arrangement, when the liquid inlet hole 132 needs to be opened, the electromagnetic device 5 attracts the blocking component 4, and the blocking component 4 moves out of the liquid inlet hole 132, thereby opening the liquid inlet hole 132.

[0036] See also Figure 6 In the fan blade structure of this embodiment, the electromagnetic device 5 includes: a connecting shaft 51, which is inserted into the connecting channel 131; and a suction portion 52, which is arranged on the outer surface of the connecting shaft 51, and the suction portion 52 generates a gravitational force to attract the blocking component 4, so that the blocking component 4 is close to the suction portion 52.

[0037] With the above arrangement, when the liquid inlet hole 132 needs to be opened, the electromagnetic device 5 attracts the blocking component 4, and the blocking component 4 moves out of the liquid inlet hole 132 and abuts against the suction portion 52, so that the blocking component 4 will not deviate from the position when the fan blade component 1 rotates, thereby preventing the fan blade component 1 from operating.

[0038] In the fan blade structure of this embodiment, see Figure 7 There are multiple liquid inlet holes 132, and the multiple liquid inlet holes 132 are arranged around the connecting channel 131; there are multiple blocking components 4, and the multiple blocking components 4 are arranged one-to-one with the multiple liquid inlet holes 132; there are multiple suction parts 52, and the multiple suction parts 52 are arranged around the connecting shaft 51, and the multiple suction parts 52 are arranged one-to-one with the multiple blocking components 4.

[0039] In this way, the blocking components 4 at different positions can be controlled to move according to the frozen positions of the fan blade components 1, so that the fluid can be injected into the cavities 11 of the corresponding frozen areas, making the defrosting work more targeted and saving energy consumption.

[0040] In the fan blade structure of this embodiment, see Figure 7 , the blocking component 4 is a spherical structure; and / or the liquid inlet hole 132 includes a first liquid inlet hole 1321 and a second liquid inlet hole 1322 which are connected to each other; the first liquid inlet hole 1321 is located on a side of the second liquid inlet hole 1322 close to the connecting channel 131, and the inner diameter of the first liquid inlet hole 1321 is larger than the inner diameter of the second liquid inlet hole 1322.

[0041] Specifically, when the fan blade component 1 rotates, the blocking component 4 uses centrifugal force to cling to the second liquid inlet hole 1322, thereby tightly blocking the liquid inlet hole 132. Setting the blocking component 4 to be spherical can reduce the friction force on the blocking component 4 when it moves.

[0042] In the fan blade structure of the present embodiment, the fan blade structure further includes a bearing component 6 . The bearing component 6 is disposed in the connecting passage 131 , and the bearing component 6 is sleeved on the connecting shaft 51 .

[0043] In this way, the connecting shaft 51 and the fan blade component 1 can be relatively rotated, and the operation of the fan blade component 1 is not affected while controlling the defrosting.

[0044] In the fan blade structure of this embodiment, see Figure 7 A partition is provided at the end of the connecting passage 131 , and a mounting passage 133 for mounting the motor shaft 101 is provided on a side of the partition away from the connecting passage 131 .

[0045] Specifically, by inserting the motor shaft 101 into the installation channel 133, the fan blade component 1 can be driven to rotate, thereby achieving the dual tasks of guiding flow and defrosting.

[0046] In the fan blade structure of this embodiment, see Figure 7 The control module includes an infrared sensor 31, and the infrared sensor 31 is used to emit infrared rays to the fan blade component 1; the control module determines the icing condition of the fan blade component 1 according to the light reflected from the surface of the fan blade component 1.

[0047] With the above arrangement, the infrared sensor 31 can be used to ensure that the fan blade component 1 is defrosted at night, thereby ensuring the normal operation of the fan blade component 1.

[0048] The fan of this embodiment includes a fan blade structure, and the fan blade structure is the fan blade structure mentioned above.

[0049] In the fan of this embodiment, see Fig. 9 The fan includes: a motor 10; a fan blade component 1, the fan blade component 1 is connected to the motor 10; a guide ring 20, a guide channel 201 is arranged inside the guide ring 20, the fan blade component 1 is arranged corresponding to the guide channel 201, and the guide ring 20 is provided with an infrared sensor 31 for sensing the icing condition of the fan blade component 1.

[0050] In this way, it does not take up space and can firmly fix the infrared sensor 31, thereby improving work efficiency.

[0051] The control method of this embodiment is applicable to the above-mentioned fan blade structure, and the control method includes: setting a first infrared sensor, and calculating the rotation period of the fan blade component 1 through the first infrared sensor; setting a second infrared sensor, and calculating the icing area of ​​the fan blade component 1 through the rotation period of the fan blade component 1 and the second infrared sensor; controlling the liquid supply structure 2 to pass fluid into the cavity 11 corresponding to the icing area.

[0052] With the above arrangement, the movement of the blocking components 4 at different positions can be controlled according to the position of the ice on the fan blade component 1, so that the fluid is injected into the cavity 11 of the corresponding ice area, making the defrosting work more targeted and saving energy consumption.

[0053] In the control method of this embodiment, the method of calculating the rotation period of the fan blade component 1 through the first infrared sensor includes: setting a mark on the fan blade component 1, and calculating the rotation period of the fan blade component 1 by recording the interval time between two consecutive reflections of the infrared rays emitted by the first infrared sensor by the mark.

[0054] In the control method of this embodiment, the method for calculating the icing area of ​​the fan blade component 1 through the rotation cycle of the fan blade component 1 and the second infrared sensor includes: receiving the infrared light reflected after the second infrared sensor irradiates the frost on the fan blade component 1; calculating the position of the received infrared light in the rotation cycle; calculating the time length of the received reflected infrared light; and calculating the icing area according to the position of the received infrared light in the rotation cycle and the time length of the received reflected infrared light.

[0055] In the control method of this embodiment, the method of controlling the liquid supply structure 2 to pass fluid into the cavity 11 corresponding to the icing area includes: a connecting channel 131 is arranged in the rotating shaft component 13 of the fan blade component 1, and a plurality of surrounding liquid inlet holes 132 connected to the cavity 11 are arranged on the inner wall of the connecting channel 131, and the corresponding liquid inlet holes 132 are opened at the corresponding time and the corresponding position according to the icing area to pass fluid into the opened liquid inlet holes 132.

[0056] Embodiment 1: There are multiple cavities 11 inside the blade 12. The cavity 11 is a conductive cavity that extends from the root of the blade to the end of the blade. One end of the liquid inlet hole 132 is in an eight-shaped shape, and an iron bead (i.e., a blocking component 4) is placed to block the cavity opening. When the fan is operating normally, the iron bead will block the cavity opening due to centrifugal force, and the cavity opening is in a closed state. When the fan is frosted, the iron bead will be sucked away by the electromagnetic device 5, and the cavity 11 is in an open state. Hot water flows through the inside of the blade 12 to melt ice and change the counterweight.

[0057] Embodiment 2: The shaft end of the rotating shaft component 13 is a double-layer structure, and the lower end is assembled on the motor shaft 101; Figure 7 , Figure 8 As shown, it is the upper end of the shaft component 13, which is connected to the electromagnetic device 5, and can control the opening and closing of the cavity and input hot water; the upper end is a double-layer structure, with balls and bearing-like structures inside, so that the electromagnetic device 5 does not rotate with the fan blades after installation.

[0058] Embodiment three: The electromagnetic device 5 is divided into two parts. The lower end of the electromagnetic device 5 is a small electromagnet (i.e., the suction part 52 of this embodiment), which corresponds to the fan blade cavity 11 in number and position. When powered on, it generates suction to attract the iron beads and open the cavity 11. The upper end is a liquid infusion tube, through which hot water passes. The hot water can be provided from the unit condenser or by using the heat generated by the motor itself.

[0059] When the fan blade component 1 is frozen, the electromagnetic device 5 is periodically energized to open the cavity 11 at the corresponding position of the fan blade component 1, and hot water is introduced to melt the frost on the fan blade component 1.

[0060] A water receiving tray may be provided at the lower part of the fan guide ring 20. After the hot water passes through the cavity 11, it is ejected from the end of the fan blade under the dual action of centrifugal force and water pressure and falls on the water receiving tray, and then re-enters the water circulation of the unit or is directly discharged.

[0061] Embodiment 4: Two groups of infrared sensors are installed on the fan guide ring 20. One group is used to detect whether there is frost on the fan blades. When there is frost, the reflected and refracted infrared light will change, which can be used to determine whether it is frozen; the other group is used to detect the position of the fan blades. By combining the signals of the two groups of sensors, information on whether the fan blades are frozen and the location of the frozen area can be obtained.

[0062] The control method of this embodiment is as follows: Two groups of infrared sensors are installed on the fan guide ring 20, which are used to detect whether there is frost on the fan blade and detect the position of the fan blade. There is a black mark on one of the fan blade components 1. The infrared sensor for detecting the position points to the black mark position. When passing the black mark, the infrared light will be absorbed, thereby obtaining a periodic signal. If the black mark is taken as the starting point, the angle is set to 0, and the period of each rotation of the fan blade component 1 is T, the position function of the fan blade component 1 θ1(t)=F(t) can be obtained; another group of sensors detects whether there is frost on the fan blade component 1. When there is frost, the infrared light will change, and a periodic signal is also obtained. The time t' after the frost is obtained, and the frosted area of ​​the fan blade component 1 is θ'=F(t').

[0063] The infrared sensor signal is transmitted to the electromagnetic device 5, and the electromagnetic device 5 obtains the signal, including the rotation period T of the fan blade component 1 and the frosted area of ​​the fan blade component 1 as θ'. The electromagnetic device 5 is composed of a plurality of electromagnets (assuming the number is n), and the electromagnets are energized with periodic current. According to the frosted position area θ' of the fan blade component 1 and the rotation period T of the fan blade component 1, it can be determined that the function of the electromagnet area that needs to be energized by the electromagnetic device 5 is θ2(t)=(θ'+2 / T·t), and the energization time is T1=T / n.

[0064] The electromagnetic device 5 is energized periodically. When the fan is frosted, the iron beads will be sucked away by the electromagnetic device 5. At this time, the cavity 11 is in an open state, and hot water flows through the blades 12 to melt the frost on the fan component 1, so that the fan component 1 is rebalanced.

[0065] 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 data used in this way can be interchangeable 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. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0066] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0067] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0068] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0069] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A fan blade structure, characterized in that: include: A fan blade component (1) is rotatably arranged, and the fan blade component (1) has a cavity (11) therein; a liquid supply structure (2), the liquid supply structure (2) being connected to the fan blade component (1) so as to inject fluid into the cavity (11); A control module, the control module being connected to the liquid supply structure (2) by signal, and the control module controlling the liquid supply structure (2) to inject fluid into the cavity (11) according to the icing condition of the fan blade component (1), so as to heat the fan blade component (1) by the fluid.

2. The fan blade structure according to claim 1, characterized in that: The fan blade component (1) comprises: A blade (12), wherein the cavity (11) is arranged in the blade (12); A rotating shaft component (13), the outer side of the rotating shaft component (13) being connected to the blade (12), a connecting channel (131) being provided inside the rotating shaft component (13), and a liquid inlet hole (132) communicating with the cavity (11) being provided on the inner wall of the connecting channel (131).

3. The fan blade structure according to claim 2, characterized in that: The fan blade structure further comprises a blocking component (4), wherein the blocking component (4) is movably arranged in the liquid inlet hole (132) to open or block the liquid inlet hole (132).

4. The fan blade structure according to claim 3, characterized in that: The fan blade structure further comprises an electromagnetic device (5), wherein the electromagnetic device (5) is inserted into the communication channel (131); the electromagnetic device (5) is connected to the control module by signal, and the control module controls the electromagnetic device (5) to attract the blocking component (4).

5. The fan blade structure according to claim 4, characterized in that: The electromagnetic device (5) comprises: A connecting shaft (51), the connecting shaft (51) being inserted into the communicating channel (131); A suction portion (52) is arranged on the outer surface of the connecting shaft (51), and a gravitational force is generated by the suction portion (52) to attract the blocking component (4), so that the blocking component (4) is close to the suction portion (52).

6. The fan blade structure according to claim 5, characterized in that: There are a plurality of liquid inlet holes (132), and the plurality of liquid inlet holes (132) are arranged around the connecting channel (131); there are a plurality of blocking components (4), and the plurality of blocking components (4) are arranged in a one-to-one correspondence with the plurality of liquid inlet holes (132); there are a plurality of suction parts (52), and the plurality of suction parts (52) are arranged around the connecting shaft (51), and the plurality of suction parts (52) are arranged in a one-to-one correspondence with the plurality of blocking components (4).

7. The fan blade structure according to claim 5, characterized in that: The blocking component (4) is a spherical structure; and / or, The liquid inlet hole (132) comprises a first liquid inlet hole (1321) and a second liquid inlet hole (1322) which are connected to each other; the first liquid inlet hole (1321) is located on a side of the second liquid inlet hole (1322) close to the connecting channel (131), and the inner diameter of the first liquid inlet hole (1321) is larger than the inner diameter of the second liquid inlet hole (1322).

8. The fan blade structure according to claim 5, characterized in that: The fan blade structure further comprises a bearing component (6), wherein the bearing component (6) is arranged in the connecting passage (131), and the bearing component (6) is sleeved on the connecting shaft (51).

9. The fan blade structure according to claim 2, characterized in that: A partition is provided at the end of the communication channel (131), and a mounting channel (133) for mounting the motor shaft (101) is provided on a side of the partition away from the communication channel (131).

10. The fan blade structure according to claim 1, characterized in that: The control module comprises an infrared sensor (31), and the infrared sensor (31) is used to emit infrared rays to the fan blade component (1); the control module determines the icing condition of the fan blade component (1) based on the light reflected by the surface of the fan blade component (1).

11. A fan, comprising a fan blade structure, characterized in that: The fan blade structure is the fan blade structure according to any one of claims 1 to 10.

12. The fan according to claim 11, characterized in that: The fan comprises: Motor (10); A fan blade component (1), the fan blade component (1) being connected to the motor (10); A guide ring (20), wherein a guide channel (201) is arranged inside the guide ring (20), the fan blade component (1) is arranged corresponding to the guide channel (201), and an infrared sensor (31) for sensing the icing condition of the fan blade component (1) is arranged on the guide ring (20).

13. A control method, applicable to the fan blade structure according to any one of claims 1 to 10, characterized in that: The control method comprises: Setting a first infrared sensor, and calculating the rotation period of the fan blade component (1) by means of the first infrared sensor; A second infrared sensor is provided to calculate the icing area of ​​the fan blade component (1) through the rotation period of the fan blade component (1) and the second infrared sensor; The liquid supply structure (2) is controlled to pass fluid into the cavity (11) corresponding to the freezing area.

14. The fan according to claim 11, characterized in that: The method for calculating the rotation period of the fan blade component (1) by using the first infrared sensor comprises: A mark is provided on the fan blade component (1), and the rotation period of the fan blade component (1) is calculated by recording the interval time between two consecutive reflections of infrared rays emitted by the first infrared sensor by the mark.

15. The fan according to claim 12, characterized in that: The method for calculating the icing area of ​​the fan blade component (1) by using the rotation cycle of the fan blade component (1) and the second infrared sensor comprises: receiving infrared light reflected by the second infrared sensor after irradiating frost on the fan blade component (1); calculating the position of the received infrared light in the rotation cycle; Calculate the length of time the reflected infrared light is received; The icing area is calculated based on the position of the received infrared light at the rotation period position and the time length of the received reflected infrared light.

16. The fan according to claim 12, characterized in that: The method of controlling the liquid supply structure (2) to introduce fluid into the cavity (11) corresponding to the icing area comprises: A connecting channel (131) is provided in the rotating shaft component (13) of the fan blade component (1), and a plurality of surrounding liquid inlet holes (132) communicating with the cavity (11) are provided on the inner wall of the connecting channel (131). The corresponding liquid inlet holes (132) are opened at corresponding times and corresponding positions according to the icing area, so as to allow fluid to flow into the opened liquid inlet holes (132).

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