Wind turbine generator set

Abstract

This utility model relates to the field of wind power generation technology and discloses a wind turbine generator set. The wind turbine generator set provided by this utility model, by installing the heating element inside the nacelle and only setting up heat exchange chambers inside the blades for hot air exchange, can reduce the space occupied inside the blades. This frees up some internal space, allowing the blades to focus on core functions such as aerodynamic shape or structural load-bearing, resulting in a more rational and compact layout, thereby improving the overall performance and reliability of the blades.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, specifically to wind turbine generator sets. Background Technology

[0002] With the global energy structure transformation and the urgent need for sustainable development, wind energy, as a new type of energy that is abundant, clean, and renewable, is being vigorously developed and utilized. Wind power generation, as the main mode of wind energy utilization, has become an indispensable and important component of the modern energy system due to its mature technology, environmental friendliness, and significant economic benefits. Developing wind power generation is of great strategic significance for reducing dependence on fossil fuels, lowering carbon emissions, and ensuring energy security.

[0003] The rotor is the core component of a wind turbine generator. During operation, it is constantly exposed to the natural environment, especially in high-altitude, low-temperature, and high-humidity regions like plateaus, where icing is highly likely to occur on the blade surface during winter. The formation of ice significantly alters the aerodynamic shape and surface characteristics of the blades, leading to increased blade operating torque, a sharp increase in turbine load, a significant decrease in aerodynamic efficiency, and inducing strong transient vibrations. This not only severely reduces power generation efficiency and equipment utilization but also poses a serious threat to the structural integrity of the blades and the safe operation of the entire wind turbine generator, potentially even causing catastrophic accidents. Therefore, the industry commonly adopts the method of integrating heating and de-icing components such as heaters and air ducts inside the blades. This melts or prevents ice formation by supplying hot air to critical areas of the blades or through direct heating.

[0004] However, the space inside the blade is extremely limited and the layout is precise because it already supports a complex load-bearing structure (such as the main beam and web), a lightning protection system, and necessary control cables. Integrating a heater and a matching air duct system inside the blade would occupy too much internal space, increasing the complexity and cost of blade manufacturing and assembly. Utility Model Content

[0005] In view of this, the present invention provides a wind turbine generator set to solve the problem of excessive space being occupied inside traditional blades.

[0006] Specifically, the wind turbine generator set provided by this utility model includes a nacelle, a heating mechanism, and an impeller. The heating mechanism includes a warm air assembly installed inside the nacelle, with its first air inlet connected to the external environment. The impeller is rotatably mounted on the nacelle and includes blades. A heat exchange chamber is provided inside the blades, with its second air inlet connected to the first air outlet of the warm air assembly, and its second air outlet connected to the external environment.

[0007] Beneficial effects: By installing the heating element inside the nacelle, and only setting up heat exchange chambers for hot air exchange inside the blades, the space occupied inside the blades can be reduced. This frees up some internal space, allowing the blades to focus on core functions such as aerodynamic shape or structural load-bearing, resulting in a more rational and compact layout, thereby improving the overall performance and reliability of the blades. Simultaneously, placing the heating element inside the nacelle keeps the main part of the thermal system in a relatively static and easily controlled environment, reducing the dynamic load on the blades as rotating components. This lowers the risk of blade damage due to heating system failure, making the wind turbine generator safer to operate, reducing the risk of instantaneous vibrations or catastrophic accidents, reducing maintenance needs, and improving the durability of the wind turbine generator.

[0008] In one optional embodiment, the blade is provided with an air guide channel, which is installed between the second air inlet of the heat exchange chamber and the first air outlet of the heating air assembly, and the air guide channel is connected to the heat exchange chamber; the heat exchange chamber extends radially along the blade in a first direction and extends chordally along the blade in a second direction; wherein, the radial direction of the blade is from the blade root to the blade tip, and the chordal direction of the blade is from the leading edge to the trailing edge.

[0009] Beneficial effects: By setting an air guide channel between the second air inlet of the heat exchange chamber and the first air outlet of the heating air assembly, the air guide channel serves as the main channel for hot air delivery, connecting the nacelle heating air assembly with the blade root inlet. Furthermore, by extending the heat exchange chamber along the radial and chordal directions of the blade, a heat exchange area covering the blade body is formed. This allows hot air to enter the chamber through the air guide channel and then naturally diffuse radially to the blade tip, while simultaneously diffusing chordally to the leading and trailing edges. This ensures that heat is fully conducted to the blade surface through the inner wall, improving the phenomenon of localized overheating or low-temperature dead zones.

[0010] In one optional embodiment, the warm air assembly includes an exhaust duct, a working fan, and a heater. One end of the exhaust duct serves as a first air inlet communicating with the external environment, and the other end serves as a first air outlet. The working fan is installed on the exhaust duct. The heater is installed on the exhaust duct and is positioned downstream of the working fan along the gas flow direction. The air guide channel communicates with the air outlet of the heater through a ventilation duct.

[0011] Beneficial effects: By setting up exhaust pipes, working fans and heaters, the airflow path is external environment, exhaust pipes, working fans, heaters, air guide channels and heat exchange chambers, realizing the extraction, heating and directional delivery of outside air, avoiding ineffective heat diffusion in the cabin, reducing heat loss and improving heat utilization efficiency.

[0012] In one alternative embodiment, the cabin interior is provided with a first mounting partition, and the exhaust pipe, the fan, and the heater are mounted on the top of the first mounting partition.

[0013] Beneficial effects: Integrating the three main components—exhaust ductwork, fan, and heater—onto the top of the first mounting partition enables centralized installation, preventing equipment from being scattered and occupying operating or aisle space. It also provides a stable mounting foundation, reducing displacement and loosening caused by vibration or movement. Furthermore, maintenance only requires operation on the partition area, eliminating the need to disassemble other parts of the nacelle. Components can be directly removed from the partition when replacing them, minimizing downtime.

[0014] In one optional embodiment, the heating mechanism further includes an electric heating element and a heating control switch. The electric heating element is installed inside the heat exchange chamber; the heating control switch is installed inside the cabin and is electrically connected to the electric heating element via a wire.

[0015] Beneficial effects: By setting a heating control switch to control the start or stop of the electric heating element located inside the heat exchange chamber, operators can dynamically select the heating mode based on the real-time icing status. For example, in extreme icing climates, the electric heating element and the warm air assembly work together, with the electric heating element quickly preheating the blade surface and the warm air maintaining a uniform temperature field, avoiding low de-icing efficiency due to localized overheating or cold areas.

[0016] In one optional embodiment, the nacelle is further provided with a second mounting partition, which is located above the first mounting partition. The second mounting partition and the inner top wall of the nacelle are arranged at intervals along the height direction to form a heat dissipation chamber, which is in communication with the external environment. The heating control switch is installed inside the heat dissipation chamber. The wind turbine generator set also includes a heat dissipation mechanism, which includes a cooling fan and a cooling motor. The cooling fan is installed inside the heat dissipation chamber, and the cooling motor is installed inside the heat dissipation chamber. The output end of the cooling motor is connected to the cooling fan.

[0017] Beneficial effects: Since the heating control switch is a key electrical component in wind turbine generators that generates significant heat, by installing a cooling motor to drive a cooling fan in the independent heat dissipation chamber where the heating control switch is located, active and forced ventilation and heat dissipation of the heat source can be achieved. Compared with passive heat dissipation methods that rely on natural convection or the overall ventilation of the nacelle, the heat dissipation efficiency can be significantly improved, ensuring that the heat generated by the heating control switch during operation is quickly and continuously removed, effectively preventing it from failing due to overheating, degrading in performance, or shortening its lifespan.

[0018] In one optional embodiment, the wind turbine generator set further includes a return pipe that communicates with a second air outlet of the heat exchange chamber. The return pipe is located inside the nacelle and is mounted to at least one of the first mounting partition and the second mounting partition via at least one fixing ring.

[0019] Beneficial effects: By installing a return pipe fitting and connecting it to the second air outlet of the heat exchange chamber, an exhaust channel can be formed, preventing the formation of eddies or stagnant zones in the gas inside the heat exchange chamber, and quickly discharging the heat-exchanged gas, thereby improving overall heat exchange efficiency and reducing icing on the blade surface. Simultaneously, using a fixing ring to install the return pipe fitting on at least one of the first and second mounting partitions provides a stable fixation for the fitting, preventing it from shaking, shifting, or falling off under fan vibration or airflow impact, ensuring the structural integrity and long-term reliability of the exhaust channel.

[0020] In one alternative embodiment, the heat dissipation mechanism further includes filters, which are arranged in pairs and respectively located on the upstream and downstream sides of the cooling fan.

[0021] Beneficial effects: By installing a filter on the upstream side of the cooling fan, most of the larger particulate pollutants such as dust, debris, and insects in the incoming cooling airflow can be intercepted in advance, preventing them from entering the cooling fan and causing blade wear, dynamic imbalance, or blockage. Furthermore, by installing a filter on the downstream side of the cooling fan, a crucial line of defense is formed to directly protect the heating control switch. This effectively captures even finer dust particles that may penetrate the upstream filter or be generated by the fan's own operation, completely preventing these pollutants from being directly blown towards or adhering to the heating control switch by the forced airflow. This avoids increased contact resistance when dust particles come into contact with the contact surface, preventing discharge, arcing, overheating, or even burnout.

[0022] In one alternative embodiment, the blade surface is coated with an anti-icing coating.

[0023] Beneficial effects: By applying the Tuoku anti-icing coating to the blade surface, the adhesion between ice crystals and the blade surface is reduced, the interfacial conditions required for ice formation are disrupted, and supercooled water droplets are delayed or prevented from condensing into ice nuclei on the blade surface. This improves the phenomenon that ice layers increase blade weight and thus damage the blade's aerodynamic performance.

[0024] In one optional embodiment, the impeller further includes a hub; multiple blades are provided, and the multiple blades are evenly distributed around the hub; the wind turbine generator set further includes a mounting frame, which is mounted along the axial direction of the wind turbine's rotation axis and is mounted on the side of the hub away from the nacelle.

[0025] Beneficial effects: The mounting bracket extends axially to the back of the wheel hub, providing installation space and facilitating the subsequent integration of multiple additional functional modules, such as sensors, anti-icing systems, and energy storage devices, which helps with subsequent upgrades as needed. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A perspective view of a wind turbine generator set provided for an embodiment of this utility model;

[0028] Figure 2 A cross-sectional view of the blades of the impeller in a wind turbine generator set provided for an embodiment of this utility model;

[0029] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0030] Figure 4 A cross-sectional view of the interior of the nacelle in a wind turbine generator set provided for an embodiment of this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Cabin; 11. First mounting bulkhead; 12. Second mounting bulkhead; 13. Heat dissipation chamber;

[0033] 211. Exhaust duct fittings; 212. Working fan; 213. Heater; 214. Ventilation duct fittings; 22. Electric heating element; 23. Heating control switch; 24. Wire;

[0034] 3. Impeller; 31. Blade; 311. Heat exchange chamber; 312. Second air outlet; 313. Air guide duct; 32. Hub;

[0035] 41. Cooling fan; 42. Cooling motor; 43. Filter screen;

[0036] 5. Return pipe fittings;

[0037] 6. Retaining ring;

[0038] 7. Anti-icing coating;

[0039] 8. Mounting bracket. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] The following is combined with Figures 1 to 4 The following describes embodiments of the present invention.

[0042] According to an embodiment of this utility model, the provided wind turbine generator set, such as Figure 1 As shown, it includes a nacelle 1, a heating mechanism, and an impeller 3.

[0043] Specifically, such as Figures 1 to 4 As shown, the heating mechanism includes a warm air assembly installed inside the nacelle 1, with the first air inlet of the warm air assembly connected to the external environment; an impeller 3 is rotatably installed in the nacelle 1, the impeller 3 includes blades 31, and a heat exchange chamber 311 is provided inside the blades 31. The second air inlet of the heat exchange chamber 311 is connected to the first air outlet of the warm air assembly, and the second air outlet 312 of the heat exchange chamber 311 is connected to the external environment.

[0044] This configuration, by installing the heating air assembly inside the nacelle 1 and only setting up the heat exchange chamber 311 inside the blade 31 for hot air heat exchange, can reduce the space occupied inside the blade 31, freeing up some of the internal space of the blade 31. This allows the blade 31 to focus on its core functions, such as aerodynamic shape or structural load-bearing, making its layout more reasonable and compact, thereby improving the overall performance and reliability of the blade 31.

[0045] Meanwhile, placing the heating components inside the nacelle 1 allows the main part of the thermal system to be in a relatively static and easily controllable environment, reducing the dynamic load on the blades 31 as rotating components, lowering the risk of damage to the blades 31 due to heating system failures (such as pipe rupture), making the operation of the wind turbine safer, reducing the risk of instantaneous vibration or catastrophic accidents, reducing maintenance requirements, and improving the durability of the wind turbine.

[0046] In one embodiment, such as Figures 1 to 4As shown, the blade 31 is provided with an air guide channel 313, which is installed between the second air inlet of the heat exchange chamber 311 and the first air outlet of the heating air assembly, and the air guide channel 313 is connected to the heat exchange chamber 311; the first direction of the heat exchange chamber 311 extends radially along the blade 31, and the second direction extends chordally along the blade 31; wherein, the radial direction of the blade 31 is the direction from the blade root to the blade tip, and the chordal direction of the blade 31 is the direction from the leading edge to the trailing edge.

[0047] With this configuration, by setting the air guide channel 313 between the second air inlet of the heat exchange chamber 311 and the first air outlet of the heating air assembly, the air guide channel 313 serves as the main channel for hot air delivery, connecting the heating air assembly of the nacelle 1 with the root inlet of the blade 31.

[0048] Furthermore, by extending the heat exchange chamber 311 along the radial and chordal directions of the blade 31 to form a heat exchange area covering the main body of the blade 31, the hot air enters the chamber through the air guide channel 313 and diffuses naturally radially to the blade tip, while also diffusing chordally to the leading and trailing edges. This allows the heat to be fully conducted to the surface of the blade 31 through the inner wall, improving the phenomenon of local overheating or low-temperature dead zones.

[0049] The first direction is the length direction, and the second direction is the width direction.

[0050] In one embodiment, such as Figures 1 to 4 As shown, the heating assembly includes an exhaust duct 211, a working fan 212, and a heater 213.

[0051] Specifically, one end of the exhaust duct 211 serves as the first air inlet connected to the external environment, and the other end serves as the first air outlet; the working fan 212 is installed on the exhaust duct 211; the heater 213 is installed on the exhaust duct 211, and the heater 213 is located downstream of the working fan 212 along the gas flow direction; the air guide channel 313 is connected to the air outlet of the heater 213 through the ventilation duct 214.

[0052] With this configuration, by setting up the exhaust duct 211, the working fan 212 and the heater 213, the airflow path is the external environment, the exhaust duct 211, the working fan 212 and the heater 213, the air guide channel 313 and the heat exchange chamber 311. This achieves the extraction, heating and directional delivery of outside air, avoids the ineffective diffusion of heat in the engine compartment 1, reduces heat loss and improves the efficiency of heat utilization.

[0053] In one embodiment, such as Figures 1 to 4 As shown, the cabin 1 is provided with a first mounting partition 11, and the top of the first mounting partition 11 is used to install the exhaust pipe 211, the fan, and the heater 213.

[0054] This configuration integrates the three major components—exhaust duct 211, fan, and heater 213—onto the top of the first mounting partition 11, achieving centralized installation. This avoids the equipment being scattered and occupying operating areas or aisle space, and provides a stable installation foundation, improving the displacement and loosening caused by vibration or movement.

[0055] Meanwhile, maintenance only requires operation on the bulkhead area, without disassembling other parts of the engine compartment 1. When replacing parts, they can be directly removed from the bulkhead, reducing downtime.

[0056] In one embodiment, such as Figures 1 to 4 As shown, the heating mechanism also includes an electric heating element 22 and a heating control switch 23. The electric heating element 22 is installed inside the heat exchange chamber 311; the heating control switch 23 is installed inside the engine compartment 1 and is electrically connected to the electric heating element 22 via a wire 24.

[0057] With this configuration, the heating element 22 located inside the heat exchange chamber 311 can be turned on or off by setting the heating control switch 23, allowing the operator to dynamically select the heating mode based on the real-time freezing status.

[0058] For example, in extreme icing climates, the electric heating element 22 works in conjunction with the warm air assembly. The electric heating element 22 quickly preheats the surface of the blade 31, and the warm air maintains the uniformity of the temperature field, avoiding low de-icing efficiency due to local overheating or cold areas.

[0059] It can be explained that the heating element 22 is selected as a heating resistance wire, which uses the heat generated by the resistance wire after being energized to heat and de-ice the blade 31.

[0060] In one embodiment, such as Figures 1 to 4 As shown, the nacelle 1 is also equipped with a second mounting partition 12, which is located above the first mounting partition 11. The second mounting partition 12 and the inner top wall of the nacelle 1 are arranged at intervals along the height direction to form a heat dissipation chamber 13, which is connected to the external environment. The heating control switch 23 is installed inside the heat dissipation chamber 13. The wind turbine generator set also includes a heat dissipation mechanism, which includes a cooling fan 41 and a cooling motor 42. The cooling fan 41 is installed inside the heat dissipation chamber 13. The cooling motor 42 is installed inside the heat dissipation chamber 13, and the output end of the cooling motor 42 is connected to the cooling fan 41.

[0061] With this configuration, since the heating control switch 23 is a key electrical component in the wind turbine generator that generates significant heat, by setting a cooling motor 42 to drive a cooling fan 41 in the independent heat dissipation chamber 13 where the heating control switch 23 is located, active and forced ventilation heat dissipation is achieved for the heat source (heating control switch 23). Compared with passive heat dissipation methods that rely on natural convection or the overall ventilation of the nacelle 1, the heat dissipation efficiency can be significantly improved, ensuring that the heat generated by the heating control switch 23 during operation is quickly and continuously removed, effectively preventing it from failing due to overheating, degrading in performance, or shortening its lifespan.

[0062] In use, the cooling motor 42 drives the cooling fan 41 to rotate, which generates a low-pressure area and drives the air flow inside the cooling chamber 13.

[0063] In one embodiment, such as Figures 1 to 4 As shown, the wind turbine generator set also includes a return pipe 5, which is connected to the second air outlet 312 of the heat exchange chamber 311. The return pipe 5 is located inside the nacelle 1 and is installed on at least one of the first mounting partition 11 and the second mounting partition 12 by at least one fixing ring 6.

[0064] This configuration, by setting up the return pipe 5 and connecting the return pipe 5 to the second air outlet 312 of the heat exchange chamber 311, can form an exhaust channel, prevent the gas from forming eddies or stagnant areas inside the heat exchange chamber 311, quickly discharge the gas after heat exchange, improve the overall heat exchange efficiency, and reduce the phenomenon of ice accumulation on the surface of the blades 31.

[0065] Meanwhile, using the fixing ring 6 to install the return pipe 5 on at least one of the first mounting baffle 11 and the second mounting baffle 12 can provide a stable fixing form for the return pipe 5, preventing the pipe from shaking, shifting or falling off under the vibration of the fan or the impact of airflow, and ensuring the structural integrity and long-term reliability of the exhaust channel.

[0066] At the same time, avoid interfering with other components.

[0067] In one embodiment, such as Figures 1 to 4 As shown, the heat dissipation mechanism also includes a filter 43, which is arranged in pairs and is respectively located on the upstream and downstream sides of the cooling fan 41.

[0068] With this configuration, by installing a filter screen 43 on the upstream side of the cooling fan 41, most of the larger particulate pollutants such as dust, debris, and insects in the incoming cooling airflow can be intercepted in advance, preventing them from entering the cooling fan 41 and causing wear on the fan blades, loss of dynamic balance, or blockage.

[0069] Furthermore, by setting a filter screen 43 downstream of the cooling fan 41, a key line of defense is formed to directly protect the heating control switch 23. It can effectively capture finer dust particles that may penetrate the upstream filter screen or be generated by the operation of the fan itself, and completely block these contaminants from being blown directly to or attached to the heating control switch 23 by the forced airflow. This prevents dust particles from increasing contact resistance when they come into contact with the contact surface, thus avoiding phenomena such as discharge, arcing, overheating, or even burning.

[0070] In one embodiment, such as Figures 1 to 4 As shown, the surface of blade 31 is coated with an anti-icing coating 7.

[0071] This configuration reduces the adhesion between ice crystals and the surface of blade 31 by coating the blade 31 with an anti-icing coating 7, thereby disrupting the interface conditions required for ice formation, delaying or preventing supercooled water droplets from condensing into ice nuclei on the surface of blade 31, and mitigating the phenomenon that ice increases the weight of blade 31, leading to damage to the aerodynamic performance of blade 31.

[0072] It can be noted that the anti-icing coating 7 uses low surface energy materials, such as coating surface energy below 20×10-3 N / m, and forms a micro-nano structure design, such as a multi-level rough surface formed by carbon nanotubes.

[0073] Furthermore, the contact angle of the coating surface is >105°, making it difficult for water droplets to spread and roll off quickly, reducing the adhesion of liquid water before freezing.

[0074] Furthermore, the coating material is required to have a transverse adhesion strength of <38.4 kPa, and when a small amount of ice appears, the ice layer can naturally fall off due to wind vibration or blade rotation.

[0075] In one embodiment, such as Figures 1 to 4 As shown, the impeller 3 also includes a hub 32; multiple blades 31 are provided, and the multiple blades 31 are evenly distributed in a circular manner and installed outside the hub 32; the wind turbine generator set also includes a mounting frame 8, which is installed along the axial direction of the wind turbine rotation axis and on the side of the hub 32 away from the nacelle 1.

[0076] This configuration, with the mounting bracket 8 extending axially to the back of the hub 32, provides installation space and facilitates the subsequent integration of multiple additional functional modules, such as sensors, anti-icing systems, and energy storage devices, which helps with subsequent upgrades as needed.

[0077] In the wind turbine generator set provided in the above embodiments, when in use, by coating the surface of the blade 31 with an anti-icing coating 7, the probability of icing on the surface of the blade 31 can be reduced. Furthermore, by installing an electric heating element 22 inside the heat exchange chamber 311 of the blade 31, the heating control switch 23 can be used to control and supply power to the electric heating element 22, thereby causing the electric heating element 22 to generate heat to heat the blade 31, and further complete the de-icing work on the surface of the blade 31.

[0078] Of course, during use, the blades 31 can be further heated by continuously blowing warm air into the heat exchange chamber 311 inside the blades 31. Specifically, the working fan 212 continuously introduces fresh air from the outside into the heater 213 through the exhaust pipe 211, causing the heater 213 to quickly heat the air. Then, the warm air is blown into the air guide channel 313 through the ventilation pipe 214 until it enters the heat exchange chamber 311 and continuously heats the blades 31. Subsequently, the warm air flows from the second air outlet 312 of the heat exchange chamber 311 into the return pipe 5 until it is discharged into the outside environment.

[0079] This setup allows the three de-icing methods to work together to achieve rapid de-icing.

[0080] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A wind turbine generator system characterized by, Comprising: Machine cabin (1); A heating mechanism, including a warm air component, the warm air component is installed inside the machine cabin (1), and the first air inlet of the warm air component is communicated with the outside environment; An impeller (3), rotatably installed in the machine cabin (1), the impeller (3) includes blades (31), a heat exchange chamber (311) is provided inside the blades (31), and the second air inlet of the heat exchange chamber (311) is communicated with the first air outlet of the warm air component, and the second air outlet (312) of the heat exchange chamber (311) is communicated with the outside environment; The blade (31) is provided with a wind guiding channel (313), the wind guiding channel (313) is installed between the second air inlet of the heat exchange chamber (311) and the first air outlet of the warm air component, and the wind guiding channel (313) is communicated with the heat exchange chamber (311); The first direction of the heat exchange chamber (311) extends along the radial direction of the blade (31), and the second direction extends along the chord direction of the blade (31); Wherein, the radial direction of the blade (31) is the direction from the blade root to the blade tip, and the chord direction of the blade (31) is the direction from the leading edge to the trailing edge.

2. The wind turbine according to claim 1, wherein The warm air component includes: An air extraction pipe member (211), one end of which serves as the first air inlet and is communicated with the outside environment, and the other end serves as the first air outlet; A working fan (212), installed on the air extraction pipe member (211); A heater (213), installed on the air extraction pipe member (211), and the heater (213) is arranged downstream of the working fan (212) along the gas flow direction; The wind guiding channel (313) is communicated with the air outlet of the heater (213) through a ventilation pipe member (214).

3. The wind turbine according to claim 2, wherein A first installation partition (11) is provided inside the machine cabin (1), and the upper part of the first installation partition (11) is used for installing the air extraction pipe member (211), the fan, and the heater (213).

4. The wind turbine according to claim 3, wherein The heating mechanism further includes: An electric heating element (22), the electric heating element (22) is installed inside the heat exchange chamber (311); A heating control switch (23), the heating control switch (23) is installed inside the machine cabin (1), and the heating control switch (23) is electrically connected to the electric heating element (22) through a wire (24).

5. The wind turbine according to claim 4, wherein A second installation partition (12) is further provided inside the machine cabin (1), the second installation partition (12) is located above the first installation partition (11), and the second installation partition (12) and the inner top wall of the machine cabin (1) are arranged at intervals in the height direction to form a heat dissipation chamber (13), and the heat dissipation chamber (13) is communicated with the outside environment; The heating control switch (23) is installed inside the heat dissipation chamber (13); The wind turbine further includes a heat dissipation mechanism, and the heat dissipation mechanism includes: A cooling fan (41) is installed inside the cooling chamber (13); A cooling motor (42) is installed inside the cooling chamber (13), and the output end of the cooling motor (42) is connected to the cooling fan (41) for transmission.

6. The wind turbine generator set according to claim 5, characterized in that, The wind turbine generator set also includes: The return pipe (5) is connected to the second air outlet (312) of the heat exchange chamber (311). The return pipe (5) is located inside the cabin (1) and is installed on at least one of the first mounting partition (11) and the second mounting partition (12) by at least one fixing ring (6).

7. The wind turbine generator set according to claim 5, characterized in that, The heat dissipation mechanism also includes: The filter screens (43) are arranged in pairs and are respectively arranged on the upstream side and the downstream side of the cooling fan (41).

8. The wind turbine generator set according to any one of claims 1-7, characterized in that, The blade (31) is coated with an anti-icing coating (7).

9. The wind turbine generator set according to any one of claims 1-7, characterized in that, The impeller (3) also includes a hub (32); The blades (31) are provided in multiple ways, and the multiple blades (31) are evenly distributed in a circular manner and installed on the outside of the hub (32); The wind turbine generator set also includes: Mounting bracket (8) is mounted on the side of the hub (32) away from the nacelle (1) along the axial direction of the wind turbine rotation axis.

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