Self-deicing fan blade
By designing heaters and expansion components inside the wind power blades, the self-deication of wind power blades is achieved by using hot air and gas expansion, solving the problems of reduced operating efficiency and increased costs caused by the icing of wind power blades, and achieving efficient deicing and cost saving effects.
Patent Information
- Application Number
- CN202411899500.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-03-18
AI Technical Summary
In cold environments, the surface of wind power blades is prone to freezing, resulting in a decrease in the operating efficiency of wind turbines and even shutdowns, increasing the operating cost of wind power generation.
A self-deicing fan blade is designed to generate hot air by a heater inside the blade and transport it to the diffusion plate through the hot air duct. The diffusion plate expands the heating area and promotes the ice layer to melt. Meanwhile, the expansion assembly applies pressure to the ice layer by using gas expansion to achieve deicing.
It improves the deicing efficiency, saves the operating cost of the fan, and achieves more efficient deicing operations through hot air recycling.
Smart Images
Figure CN119641542A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of wind power generation, in particular to a self-deicing fan blade. Background Art
[0002] In recent years, energy crisis and environmental crisis have become increasingly serious, and wind energy, as an environmentally friendly, renewable and clean energy, has achieved unprecedented development. Since most of the areas in my country with rich wind resources are located in high latitudes, ice is very likely to form on the surface of wind turbine blades in winter. The rotor blades of wind turbine generators rely on their special aerodynamic shape structure to capture wind energy and convert it into mechanical energy. Wind turbine blades, as components of wind turbines for capturing wind energy, play an extremely important role in wind turbines. Ice on the surface of wind turbine blades will lead to a decrease in the operating efficiency of wind turbines. In severe cases, the wind turbines will be forced to shut down and even cause safety accidents, which will greatly increase the operating cost of wind power generation. Therefore, in cold environments, how to prevent ice on the surface of wind turbine blades has become a problem to be solved.
[0003] At present, the main methods used to prevent wind turbine blades from icing are heating or mechanical vibration. Deicing by heating alone takes a long time for the ice layer to gradually melt, and the efficiency of mechanical vibration deicing is low. Although the newer combination of heating and vibration has effectively improved the deicing efficiency, it has high energy consumption. Although it has solved the problem of blade icing to a certain extent, it has also greatly increased the operating cost of wind power generation. Summary of the invention
[0004] In view of the above problems or problems existing in the prior art, the present invention is proposed.
[0005] Therefore, the object of the present invention is to provide a self-deicing fan blade, which can melt the contact surface between the blade and the ice by heating the inside of the blade, and circulate the hot air to break and clean the ice.
[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a self-deicing wind turbine blade, comprising a deicing unit, including a wind turbine blade, a plurality of groups of diffusion plates arranged inside the wind turbine blade, a hot air pipe connected between each adjacent group of diffusion plates on a side close to each other, a heater arranged inside the wind turbine blade, and expansion components arranged on both sides of the wind turbine blade;
[0007] The diffusion plate is used to heat and melt the ice layer on the surface of the wind turbine blade; the hot air pipe is used to transport de-icing hot air into the diffusion plate; the heater is used to control the hot air supply during the de-icing process; and the expansion component is used to break up the melted ice layer.
[0008] As a preferred solution of the self-deicing wind turbine blade of the present invention, the wind turbine blade includes a heating cavity opened inside and a mounting cavity opened at the bottom of the wind turbine blade;
[0009] A plurality of groups of the diffusion plates are all arranged inside the heating cavity, and the heater is fixedly arranged inside the installation cavity.
[0010] As a preferred solution of the self-deicing fan blade of the present invention, wherein: a plurality of groups of the diffusion plates each include a cavity opened inside, and a plurality of groups of spoilers fixedly arranged inside the cavity;
[0011] The shapes of the spoilers in the plurality of groups are all inclined, and the spoilers in the plurality of groups are arranged in a crisscross pattern inside the cavity.
[0012] As a preferred solution of the self-deicing fan blades of the present invention, wind holes are opened on the upper and lower sides of several groups of diffusion plates, and the hot air pipe is connected with the diffusion plate through the wind holes, and the shape of the hot air pipe is shape.
[0013] As a preferred solution of the self-deicing blower blades of the present invention, the heater includes a dustproof shell arranged inside the installation cavity, a hot blower arranged inside the dustproof shell, and a collecting cover connected to the top of the dustproof shell.
[0014] As a preferred solution of the self-deicing blower blades of the present invention, an air supply pipe is provided at the top end of the collecting cover, and the top end of the air supply pipe is connected to the diffusion plate close to the bottom wall of the heating chamber.
[0015] As a preferred solution of the self-deicing blower blade of the present invention, a mesh plate is provided on a side of the dust cover away from the collecting cover, and an air outlet is provided on a side of the dust cover close to the collecting cover.
[0016] As a preferred solution of the self-deicing wind turbine blades described in the present invention, the expansion assembly includes a plurality of groups of hoses arranged on both sides of the wind turbine blades, air inlet pipes respectively arranged at the top ends of the plurality of groups of hoses, and shunt pipes respectively connected to the top ends of the plurality of groups of air inlet pipes.
[0017] As a preferred solution of the self-deicing fan blades described in the present invention, a connecting hole is opened on the outer side of the wind turbine blade, and the end of the diverter pipe away from the air inlet pipe passes through the connecting hole and is connected to the diffuser plate on the side close to the top wall of the heating chamber.
[0018] As a preferred solution of the self-deicing fan blades of the present invention, several groups of the hoses are arranged in a ring array on the outside of the wind turbine blades, and the ends of the several groups of the hoses away from the air inlet pipe are connected to a pressure relief valve.
[0019] The beneficial effects of the present invention are as follows: the present invention generates hot air inside the wind turbine blades through a heater and transports the hot air to several groups of diffusion plates through a hot air pipe, and the heating area of the blades is expanded through the diffusion plates so that the heat in the hot air can be better transferred to the outside of the wind turbine blades through the diffusion plates for heating, causing the ice layer on the outside of the blades to begin to melt at the adhesion point to reduce its adhesion, and the hot air will eventually be transported by a shunt pipe to several groups of hoses. As the gas is injected, the hoses soften and gradually expand, thereby exerting pressure on the nearby ice layers, causing the ice layers to crack, disperse and fall under the action of the air pressure to achieve de-icing. By recycling the hot air energy, different structures can be driven to de-ice the blades, which not only improves the de-icing efficiency but also effectively saves the operating cost of the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.
[0021] Figure 1 This is the overall structural diagram of the self-deicing fan blades.
[0022] Figure 2 For self-deicing fan blades Figure 1 Partial structure diagram
[0023] Figure 3 This is an exploded view of the local structure of the self-deicing fan blades.
[0024] Figure 4 This is a structural diagram of the diffuser plate and hot air duct combination of the self-deicing fan blades.
[0025] Figure 5 A cross-sectional view of the diffuser structure of the self-deicing fan blades.
[0026] Figure 6 This is a structural diagram of the heater for self-deicing fan blades.
[0027] Figure 7 A cross-sectional view of the heater structure for self-deicing fan blades. DETAILED DESCRIPTION
[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.
[0029] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.
[0031] Example 1
[0032] Reference Figure 1 to Figure 6 , which is the first embodiment of the present invention, and provides a self-deicing fan blade, which can efficiently de-ice the fan blade, including: a de-icing unit 100, including a wind turbine blade 101, the wind turbine blade 101 is a blade part of a wind turbine, usually arranged on a wind turbine tower in a group of three, a plurality of groups of diffusion plates 102 arranged inside the wind turbine blade 101, each adjacent two groups of diffusion plates 102 are connected between the sides close to each other and are provided with a hot air pipe 103, a heater 104 arranged inside the wind turbine blade 101, and a device The expansion components 105 are placed on both sides of the wind turbine blade 101, and the hot air pipe 103 is a channel for the diffuser plate 102 to receive hot air and can also play a heating role. The combination of the hot air pipe 103 and the diffuser plate 102 can reduce the weight of the blade while maintaining a good heating effect. The diffuser plate 102 is used to heat and melt the ice layer on the surface of the wind turbine blade 101; the hot air pipe 103 is used to transport de-icing hot air into the diffuser plate 102; the heater 104 is used to control the hot air supply during the de-icing process; the expansion component 105 is used to break the melted ice layer.
[0033] It should be noted that the diffuser plate 102 is made of a high thermal conductivity material, and the width dimensions and shapes of several groups of diffuser plates 102 are different, and are adjusted according to the inner cavity shape and size of the heating chamber 101a to ensure that the diffuser plate 102 can better fit the heating chamber 101a and transfer heat evenly to the outside of the wind turbine blade 101 for de-icing. Compared with the prior art, the diffuser plate 102 and the hot air pipe 103 are combined to form a channel for guiding the flow of hot air in the blade. The diffuser plate 102 provides a larger and more uniform heat contact area to prevent the situation where the temperature in the middle is high and the temperature on both sides is low when the gas flows, and the formed flow channel provides a basis for the subsequent hot air recycling to reduce wind power loss.
[0034] When in use, the de-icing unit 100 is installed in the blade unit 100. When an ice layer condenses on the outside of the wind turbine blade 101, the heater 104 is started to extract nearby air and heat it to a certain temperature. The hot air is then transported layer by layer to the inside of several diffusion plates 102 through the hot air pipe 103. The diffusion plates 102 receive the heat emitted by the hot air and conduct it to the wind turbine blades 101 in contact therewith. The surface temperature of the wind turbine blades 101 is increased by heat conduction, thereby causing the ice layer to begin to melt. After the hot air is transported to the last diffusion plate 102, it will be transported to the expansion component 105, and the ice layer will be squeezed and broken on the basis of melting through gas extrusion expansion, so that the ice layer is separated from the wind turbine blade 101, completing the self-deicing operation.
[0035] In summary, air is extracted through the heater 104 and heated to hot air for use as a heat source for de-icing. It is firstly dissipated through the cooperation of several groups of diffusion plates 102 and hot air pipes 103 so that the heat in the hot air can be fully utilized to accelerate the melting of the ice layer on the outside of the blade. After the heat in the hot air is utilized, it is transported to the expansion component 105, and the expansion effect generated by gas extrusion is used to break the ice layer on the outside. Then, by recycling the hot air energy, the ice layer is melted and lost its attachment to the outside of the blade, and then it is broken, so that the ice layer falls off quickly, which greatly reduces the operating cost of the fan.
[0036] Example 2
[0037] Reference Figure 1 to Figure 7 , which is the second embodiment of the present invention, and which is different from the first embodiment in that: it also includes: in the previous embodiment, the self-deicing wind turbine blade includes a wind turbine blade 101 including a heating chamber 101a opened inside, and an installation chamber 101b opened at the bottom of the wind turbine blade 101.
[0038] Furthermore, several groups of diffusion plates 102 are arranged inside the heating cavity 101a, and the heater 104 is fixedly arranged inside the installation cavity 101b. It should be noted that a temperature measuring module is arranged in the cavity 102a to monitor the temperature of the incoming hot air, and the temperature measuring module is a temperature sensor, model E52 series.
[0039] Furthermore, each of the plurality of diffusion plates 102 includes a cavity 102 a opened therein, and a plurality of spoiler sheets 102 b fixedly disposed inside the cavity 102 a.
[0040] Furthermore, the groups of spoilers 102b are all in an inclined L-shape, and the groups of spoilers 102b are arranged in a criss-cross pattern inside the cavity 102a.
[0041] Furthermore, after the hot air is transported into the cavity 102a in the diffuser 102 through the hot air pipe 103, the hot air gas will be divided and flow to both sides when it hits the spoiler 102b, and then hit the next spoiler 102b. Under the reciprocating operation, the hot air can effectively fill the cavity 102a to evenly heat the outside of the blade.
[0042] Furthermore, the heater 104 includes a dustproof shell 104a arranged inside the installation cavity 101b, a hot blower 104b arranged inside the dustproof shell 104a, and a collecting hood 104c connected to the top of the dustproof shell 104a. It should be noted that the hot blower 104b includes a blower and a heating wire arranged at the front end of the blower. The blower draws external air, and the heating wire heats the airflow passing through. The model of the hot blower 104b is a 25-kilowatt electric heater and a blower with an operating flow rate of more than 2,500 meters per hour.
[0043] Furthermore, the expansion assembly 105 includes a plurality of groups of hoses 105a disposed on both sides of the wind turbine blade 101, air inlet pipes 105b disposed at the top of the plurality of groups of hoses 105a, and flow dividers 105c connected to the top of the plurality of groups of air inlet pipes 105b.
[0044] Furthermore, the hose 105 is made of a highly elastic material and can effectively expand in accordance with changes in gas pressure when gas is injected.
[0045] Furthermore, a plurality of groups of hoses 105a are arranged in a circular array on the outside of the wind turbine blade 101, and one end of the plurality of groups of hoses 105a away from the air inlet pipe 105b is connected to a pressure relief valve 105a-1.
[0046] It should be noted that the model of the pressure relief valve 105a-1 is an RA series fully enclosed safety pressure relief valve, which is used to open and release the gas when the internal air pressure of the hose 105a reaches a critical value, and to make the hose 105a retract. After the pressure relief valve 105a-1 is closed, the hose 105a continues to receive gas and expands again to squeeze and break the ice layer. Through the cyclic operation, the hose 105a can expand periodically and squeeze the external ice layer multiple times until the ice layer breaks and falls.
[0047] When in use, the hot air produced by the hot air blower 104b is transported outwardly into the cavity 102a in the diffuser 102 through the hot air pipe 103, and the hot air gas will come into contact with the plurality of groups of spoiler sheets 102b, and the air flow will be divided and flow to both sides, so that the hot air can effectively fill the cavity 102a, so as to evenly heat the outer side of the blade. Under the cooperation of the hot air pipe 103 and the diffuser 102, the temperature of the outer side of the blade is higher than the condensation temperature of the ice layer, so that the ice layer begins to melt. Further, after the hot air flows out of the last diffuser 102, it will be transported The air flows into the shunt pipe 105c, and then dispersedly flows into several intake pipes 105b along the shunt pipe 105c, and is finally transported to the corresponding hose 105a along the intake pipe 105b. The air pressure generated by the gas accumulation inside the hose 105a pushes the hose 105a to gradually expand outward, and the force generated by the expansion acts on the ice layer condensed near the hose 105a. When the expansion force exceeds the pressure resistance range of the ice layer, cracks will appear in the ice layer under the squeezing of the force, and it will be further broken along the cracks under the action of the force. The broken ice layer will fall off from the outside of the blade on the basis of melting.
[0048] In summary, the hot air blower 104b can be used to perform conventional hot air de-icing on the blades. Under the action of the diffuser plate 102 and the hot air pipe 103, the heat is transferred to the outside of the wind turbine blade 101 in a faster and more uniform manner to melt the ice layer on the surface of the blade. On the basis of internal heating to melt the outer ice layer, the hose 105a performs a final recycling of the hot air to break the ice layer that has begun to melt.
[0049] Example 3
[0050] Reference Figure 1 to Figure 7 , which is the third embodiment of the present invention, provides a self-deicing fan blade, which can efficiently de-ice the fan blade while saving operating costs, including:
[0051] The deicing unit 100 includes a wind turbine blade 101, a plurality of groups of diffusion plates 102 arranged inside the wind turbine blade 101, a hot air pipe 103 connected between each adjacent group of diffusion plates 102 on the side close to each other, a heater 104 arranged inside the wind turbine blade 101, and expansion components 105 arranged on both sides of the wind turbine blade 101; the diffusion plate 102 is used to heat and melt the ice layer on the surface of the wind turbine blade 101; the hot air pipe 103 is used to transport deicing hot air into the diffusion plate 102; the heater 104 is used to control the hot air supply during the deicing process; the expansion component 105 is used to break the melted ice layer.
[0052] Specifically, the wind turbine blade 101 includes a heating cavity 101 a opened inside, and a mounting cavity 101 b opened at the bottom of the wind turbine blade 101 .
[0053] Furthermore, several groups of diffusion plates 102 are arranged inside the heating cavity 101a, and the heater 104 is fixedly arranged inside the installation cavity 101b. It should be noted that a temperature measuring module is arranged in the cavity 102a to monitor the temperature of the incoming hot air, and the temperature measuring module is a temperature sensor, model E52 series.
[0054] It should be noted that the diffuser plate 102 is made of a high thermal conductivity material, and the width dimensions and shapes of several groups of diffuser plates 102 are different and are adjusted according to the inner shape dimensions of the heating cavity 101a to ensure that the diffuser plate 102 can better fit the heating cavity 101a and transfer heat evenly to the outside of the wind turbine blade 101 for de-icing.
[0055] Furthermore, each of the plurality of diffusion plates 102 includes a cavity 102 a opened therein, and a plurality of spoiler sheets 102 b fixedly disposed inside the cavity 102 a.
[0056] Furthermore, the groups of spoilers 102b are all in an inclined L-shape, and the groups of spoilers 102b are arranged in a criss-cross pattern inside the cavity 102a.
[0057] Furthermore, after the hot air is transported into the cavity 102a in the diffuser 102 through the hot air pipe 103, the hot air gas will be divided and flow to both sides when it hits the spoiler 102b, and then hit the next spoiler 102b. Under the reciprocating operation, the hot air can effectively fill the cavity 102a to evenly heat the outside of the blade.
[0058] Furthermore, air holes 102c are provided on both upper and lower sides of the plurality of groups of diffusion plates 102, and the hot air pipe 103 is connected to the diffusion plate 102 via the air holes 102c, and the hot air pipe 103 is arranged in an S shape.
[0059] Furthermore, the heater 104 includes a dustproof shell 104a disposed inside the installation cavity 101b, a hot blower 104b disposed inside the dustproof shell 104a, and a collecting cover 104c disposed on the top of the dustproof shell 104a.
[0060] Furthermore, the top end of the collecting cover 104c is connected to an air supply pipe 104c-1, and the top end of the air supply pipe 104c-1 is connected to the diffusion plate 102 close to the bottom wall of the heating chamber 101a.
[0061] Furthermore, a mesh plate 104a-1 is provided on the side of the dustproof shell 104a away from the collecting cover 104c, and an air outlet 104a-2 is opened on the side of the dustproof shell 104a close to the collecting cover 104c. The mesh plate 104a-1 can effectively prevent foreign matter from entering and protect the normal operation of the hot blower 104b. The air outlet 104a-1 provides a channel for hot air to enter the collecting cover 104c.
[0062] Furthermore, the expansion assembly 105 includes a plurality of groups of hoses 105a disposed on both sides of the wind turbine blade 101, air inlet pipes 105b disposed at the top of the plurality of groups of hoses 105a, and flow dividers 105c connected to the top of the plurality of groups of air inlet pipes 105b.
[0063] Furthermore, the hose 105 is made of a highly elastic material and has an arched cross-section. When gas is injected, it can expand and change with the change in air pressure, and the arched structure can better concentrate the force to squeeze and break the ice layer.
[0064] Furthermore, a connection hole 101c is opened on the outer side of the wind turbine blade 101, and one end of the shunt pipe 105c away from the air inlet pipe 105b passes through the connection hole 101c and is connected to the diffusion plate 102 close to the top wall of the heating chamber 101a.
[0065] Furthermore, several groups of hoses 105a are arranged in a circular array on the outside of the wind turbine blade 101, and one end of the several groups of hoses 105a away from the air inlet pipe 105b is connected to a pressure relief valve 105a-1. It should be noted that the model of the pressure relief valve 105a-1 is a RA series fully enclosed safety pressure relief valve.
[0066] During use, when ice condenses on the outside of the wind turbine blade 101, the heater 104 is started by the controller on the fan, and the hot air sucked and produced by the hot blower 104b flows into the hot air pipe 103 after passing through the collecting cover 104c and the air supply pipe 104c-1. After being transported into the cavity 102a in the diffuser 102, the hot air gas will come into contact with several groups of spoilers 102b, and the air flow will be divided and flow to both sides, so that the hot air can be evenly filled in the cavity 102a, so as to evenly heat the outside of the blade. Under the cooperation of the hot air pipe 103 and the diffuser 102, the temperature of the outside of the blade is higher than the condensation temperature of the ice layer, so that the ice layer begins to melt.
[0067] Furthermore, after passing through the last diffuser plate 102, the hot air will be transported to the shunt pipe 105c connected to the last diffuser plate 102, and then dispersed along the shunt pipe 105c to flow into a plurality of air inlet pipes 105b, and finally transported to the corresponding hose 105a along the air inlet pipe 105b. The hot air transported to the hose 105a will soften the hose 105a by the residual temperature, and the air pressure generated by the squeezing between the gases will push the hose 105a to gradually expand outward, and the force generated by the expansion will act on the ice layer condensed near the hose 105a. When the expansion force exceeds the pressure resistance range of the ice layer, the hot air will be transported to the corresponding hose 105a. After being surrounded, cracks will appear in the ice layer under the squeeze of force, and will be further broken along the cracks under the action of the force. The broken ice layer will fall off from the outside of the blade under the traction of gravity after melting, and when the air pressure inside the hose 105a reaches the critical value, the pressure relief valve 105a-1 automatically opens to release the gas and retract the hose 105a. After the pressure relief valve 105a-1 is closed, the hose 105a continues to receive gas and expands again to squeeze and break the ice layer. Through the cyclic operation, the hose 105a can be expanded periodically to squeeze the external ice layer multiple times until the ice layer breaks and falls off.
[0068] In summary, when the hot air produced by the heater 104 first flows through the hot air pipe 103 and the diffuser plate 102, most of the heat is transferred outward to the surface of the wind turbine blade 101, so that the surface temperature of the wind turbine blade 101 is higher than the condensation temperature of the ice layer, and the ice layer begins to melt from the inside to the outside. The hot air can be transported to the hose 105a through the shunt pipe and the air inlet pipe for secondary utilization. After the hose is softened by the residual heat of the hot air, it is expanded by air pressure, and the ice layer is squeezed outward by the expansion to break it, and separated from the blade under the action of gravity, and the hot air used for heating and de-icing is recycled, and different de-icing operations are achieved using a single energy source. Not only the self-de-icing operation of the fan blades is completed, but also the operating cost of the fan can be greatly saved.
[0069] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.
Claims
1. A self-deicing fan blade, characterized in that: include, A deicing unit (100) comprises a wind turbine blade (101), a plurality of groups of diffusion plates (102) arranged inside the wind turbine blade (101), a hot air pipe (103) being arranged between two adjacent groups of diffusion plates (102) on a mutually adjacent side, a heater (104) arranged inside the wind turbine blade (101), and expansion components (105) arranged on both sides of the wind turbine blade (101); The diffuser plate (102) is used to heat and melt the ice layer on the surface of the wind turbine blade (101); the hot air pipe (103) is used to transport de-icing hot air into the diffuser plate (102); the heater (104) is used to control the hot air supply during the de-icing process; and the expansion component (105) is used to break the melted ice layer.
2. The self-deicing fan blade according to claim 1, characterized in that: The wind turbine blade (101) comprises a heating cavity (101a) opened inside, and a mounting cavity (101b) opened at the bottom of the wind turbine blade (101); A plurality of groups of the diffusion plates (102) are arranged inside the heating chamber (101a), and the heater (104) is fixedly arranged inside the installation chamber (101b).
3. The self-deicing fan blade according to claim 2, characterized in that: The plurality of groups of diffusion plates (102) each comprise a cavity (102a) opened therein, and a plurality of groups of spoilers (102b) fixedly arranged inside the cavity (102a); The shapes of the plurality of groups of spoilers (102b) are all inclined L-shaped, and the plurality of groups of spoilers (102b) are arranged in a criss-cross pattern inside the cavity (102a).
4. The self-deicing fan blade according to claim 3, characterized in that: Wind holes (102c) are provided on both upper and lower sides of the plurality of groups of diffusion plates (102), and the hot air pipe (103) is connected to the diffusion plate (102) via the wind holes (102c), and the hot air pipe (103) is arranged in an S shape.
5. The self-deicing fan blade according to claim 4, characterized in that: The heater (104) comprises a dustproof casing (104a) arranged inside the installation cavity (101b), a hot blower (104b) arranged inside the dustproof casing (104a), and a collecting cover (104c) arranged in communication with the top of the dustproof casing (104a).
6. The self-deicing fan blade according to claim 5, characterized in that: The top end of the collecting cover (104c) is connected to an air supply pipe (104c-1), and the top end of the air supply pipe (104c-1) is connected to the diffusion plate (102) close to the inner bottom wall of the heating chamber (101a).
7. The self-deicing fan blade according to claim 6, characterized in that: A mesh plate (104a-1) is provided on a side of the dustproof shell (104a) away from the collecting cover (104c), and an air outlet (104a-2) is provided on a side of the dustproof shell (104a) close to the collecting cover (104c).
8. The self-deicing fan blade according to claim 7, characterized in that: The expansion assembly (105) comprises a plurality of groups of hoses (105a) arranged on both sides of the wind turbine blade (101), air inlet pipes (105b) respectively arranged at the top ends of the plurality of groups of hoses (105a), and flow dividers (105c) respectively connected to the top ends of the plurality of groups of air inlet pipes (105b).
9. The self-deicing fan blade according to claim 8, characterized in that: A connection hole (101c) is provided on the outside of the wind turbine blade (101), and one end of the shunt pipe (105c) away from the air inlet pipe (105b) passes through the connection hole (101c) and is connected to the diffusion plate (102) close to the top wall of the heating chamber (101a).
10. The self-deicing fan blade according to claim 9, characterized in that: Several groups of the hoses (105a) are arranged in a circular array outside the wind turbine blades (101), and one end of the several groups of the hoses (105a) away from the air inlet pipe (105b) is connected to a pressure relief valve (105a-1).