Fan blade assembly and fan

Abstract

The embodiment of the invention discloses a fan blade assembly and a fan. The fan blade assembly comprises a main body and a plurality of blades, the blades are connected to the main body, the surface of any blade is covered with a coating layer, and the coating layer can absorb noise; the plurality of first detection device groups are respectively arranged on the plurality of blades, and the first detection device groups are used for detecting damaged areas of the coating layers; the repairing device is used for repairing the damaged area of the coating layer; and the control device is electrically connected with the multiple first detection device sets and the repairing device, and the control device can drive the repairing device to operate according to the detection results of the first detection device sets so as to repair the damaged area. According to the fan blade assembly, the damaged state of the coating layer of the blade can be detected, the damaged area can be repaired, the self-repairing function of the coating layer of the blade is achieved, noise rise caused by damage of the coating layer is avoided, the reliability of the fan blade assembly is improved, and the service life of the fan blade assembly is prolonged.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the fan technology field, and in particular to a fan blade assembly and a fan. BACKGROUND

[0002] In the related art, the blades of the fan are usually covered with a coating layer for absorbing noise, but after long-term operation of the fan, the coating layer is easily damaged, thereby causing the noise absorption capacity of the coating layer to decrease and the service life of the blade to be shortened. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art or related art.

[0004] Therefore, according to a first aspect of the technical scheme of the present application, a fan blade assembly is provided, comprising: a main body; a plurality of blades connected to the main body, the surface of any blade being covered with a coating layer capable of absorbing noise; a plurality of first detection device groups respectively arranged on the plurality of blades, at least a part of any first detection device group being located in the coating layer of the corresponding blade, the first detection device group being used for detecting a damaged area of the coating layer; a repair device arranged on the main body, the repair device being used for repairing the damaged area of the coating layer; and a control device arranged on the main body, the control device being electrically connected with the plurality of first detection device groups and the repair device, the control device being capable of driving the repair device to operate according to the detection result of the first detection device group, so as to repair the damaged area.

[0005] In some technical schemes provided by the present application, any first detection device group comprises: a stress detection device for detecting the stress of the coating layer, the area in the coating layer with a stress greater than a stress threshold being a damaged area; and a crack detection device for detecting the crack of the coating layer, the area in the coating layer with a crack being a damaged area.

[0006] In some technical schemes provided by the present application, the repair device comprises: a first driving device arranged on the main body, the first driving device being electrically connected with the control device; and at least one container for storing a repair agent, the container being connected with the first driving device, the control device controlling the first driving device to move the container to the damaged area and cover the damaged area with the repair agent, so as to repair the damaged area.

[0007] In some technical schemes provided by the present application, the repair device comprises: a second driving device arranged on the main body, the second driving device being electrically connected with the control device; and a heating device connected with the second driving device, the control device controlling the second driving device to move the heating device to the damaged area and heat the damaged area, so as to repair the damaged area.

[0008] In some technical solutions provided in the present application, the fan blade assembly further comprises: a plurality of second detection devices, at least a part of any second detection device is arranged on a corresponding blade, the second detection device is electrically connected with the control device, the coating layer of any blade comprises a plurality of coating areas, the second detection device is used for detecting the noise absorption rate of the plurality of coating areas of the corresponding blade, the control device determines the coating area with a noise absorption rate less than a noise absorption rate threshold in the plurality of coating areas as an unqualified area according to the detection result of the second detection device; wherein the coating layer is a coating layer with pores, any coating area has a heating element therein, the heating element is electrically connected with the control device, and the control device controls the heating element of the unqualified area to heat the unqualified area, so as to adjust the pores of the unqualified area and further adjust the noise absorption rate of the unqualified area.

[0009] In some technical solutions provided in the present application, the fan blade assembly further comprises: a plurality of connecting pieces, the connecting pieces are used for connecting the first detection device and the second detection device to the blades.

[0010] In some technical solutions provided in the present application, the end of the blade away from the main body is a tip end, and the fan blade assembly further comprises: a plurality of vortex generator groups, which are respectively installed on the surfaces of the plurality of blades, and the vortex generator group is close to the tip end of the corresponding blade.

[0011] In some technical solutions provided in the present application, any vortex generator group comprises a plurality of vortex generator assemblies, the plurality of vortex generator assemblies are sequentially arranged along the length direction of the blade, and the distance between the vortex generator assembly farthest from the tip end and the tip end is less than or equal to one third of the length of the blade.

[0012] In some technical solutions provided in the present application, along the length direction of the blade, two adjacent vortex generator assemblies form a group, any vortex generator assembly comprises: a vortex generator; a mounting piece used for movably mounting the vortex generator on the blade, the mounting piece is electrically connected with the control device, the two vortex generators of the same group have an included angle therebetween, the included angle between the two vortex generators of the same group towards the windward side of the blade is a windward angle, and the mounting piece can drive the vortex generator to rotate relative to the blade to adjust the windward angle; the fan blade assembly further comprises: a plurality of third detection devices respectively installed on the plurality of blades, the third detection device is used for detecting the airflow velocity and / or noise value around the corresponding blade, the third detection device is electrically connected with the control device, and the control device controls the mounting piece to adjust the windward angle according to the detection result of the third detection device.

[0013] The second aspect of the technical solutions of the present application provides a fan comprising the fan blade assembly provided in the first aspect of the present application.

[0014] Compared with the prior art, the present application at least has the following beneficial effects:

[0015] The application can detect the damaged state of the coating layer of the blade through the first detection device, determine the damaged area, and repair the damaged area through the repair device, thereby realizing the self-repairing function of the blade coating layer, avoiding the noise increase caused by the damage of the coating layer, improving the reliability of the fan blade assembly, and prolonging the service life of the fan blade assembly. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a better understanding of the preferred embodiments, and are not to be considered as limiting of the present application. Moreover, in the drawings, like reference numerals refer to similar components, and in which:

[0017] Figure 1 Structure diagram of a blade according to an embodiment of the present application;

[0018] Figure 2 Structure diagram of a blade according to an embodiment of the present application;

[0019] Figure 3 Structure diagram of a blade according to an embodiment of the present application;

[0020] Figure 4 Structure diagram of a blade according to an embodiment of the present application; Figure 3 Enlarged view of area A in FIG. 4;

[0021] Figure 5 Structure diagram of a vortex generator according to an embodiment of the present application;

[0022] Figure 6 Structure diagram of a vortex generator according to an embodiment of the present application;

[0023] Figure 7 Structure diagram of a vortex generator according to an embodiment of the present application;

[0024] Figure 8 Structure diagram of a vortex generator according to an embodiment of the present application;

[0025] Figure 9 Structure diagram of a fan blade assembly according to an embodiment of the present application.

[0026] Wherein, Figures 1 to 9 Correspondence between reference numerals and component names in FIG. 4 is as follows:

[0027] 100, fan blade assembly, 110, blade, 111, coating layer, 112, tip end, 120, first detection device group, 130, vortex generator group, 131, vortex generator assembly, 132, vortex generator, 140, main body. DETAILED DESCRIPTION

[0028] In order to better understand the above technical solutions, the technical solutions of the embodiments of the present application will be described in detail below with reference to the drawings and specific embodiments. It should be understood that the specific features in the embodiments of the present application and the specific embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and are not limitations of the technical solutions of the present application. In the case of no conflict, the technical features in the embodiments of the present application and the specific embodiments can be combined with each other.

[0029] Reference will be made below to Figures 1 to 9 The fan blade assembly 100 and the fan provided according to some embodiments of the present application are described.

[0030] In an embodiment according to the present application, as shown in Figure 1 , Figure 2 and Figure 9 , the present application proposes a fan blade assembly 100, comprising: a main body 140; a plurality of blades 110 connected to the main body 140, the surface of any blade 110 being covered with a coating layer 111, the coating layer 111 being capable of absorbing noise; a plurality of first detection device groups 120 respectively arranged on the plurality of blades 110, at least a part of any first detection device group 120 being located within the coating layer 111 of the corresponding blade 110, the first detection device group 120 being used for detecting a damaged area of the coating layer 111; a repair device arranged on the main body 140, the repair device being used for repairing the damaged area of the coating layer 111; and a control device arranged on the main body 140, the control device being electrically connected with the plurality of first detection device groups 120 and the repair device, the control device being capable of driving the repair device to operate according to the detection result of the first detection device group 120, so as to repair the damaged area.

[0031] The fan blade assembly 100 proposed by the present application is used in a fan, and the fan blade assembly 100 comprises a main body 140, a plurality of blades 110, a plurality of first detection devices, a repair device and a control device. The surface of the blade 110 is covered with a coating layer 111, the coating layer 111 is used for reducing the noise generated by the blade 110 when the fan is running, the first detection device is used for detecting the damaged state of the coating layer 111, and the control device can control the repair device to repair the damaged area on the surface of the blade 110, so as to realize the self-repairing function of the fan blade assembly 100, and further avoid the noise increase caused by the damage of the coating layer 111.

[0032] Specifically, the number of the blades 110 is multiple, the multiple blades 110 are connected to the main body 140, and the main body 140 can drive the blades 110 to rotate. When the fan is running, the multiple blades 110 rotate, and noise is generated due to the friction between the blades 110 and the air. In order to reduce the noise generated by the blades 110 when the fan is running, the surface of the blade 110 is covered with a coating layer 111, the coating layer 111 is made of a material with multiple pores, the coating layer 111 can absorb noise, and thus has a certain noise reduction effect.

[0033] Further, when the fan is running for a long time, the coating layer 111 is prone to damage, and the first detection device can detect the damaged state of the coating layer 111. Specifically, the number of the first detection devices is multiple, the multiple first detection devices are respectively arranged on the multiple blades 110, the coating layer 111 has a certain thickness, at least a part of any first detection device is located in the coating layer 111, the first detection device can detect the coating layer 111 in real time, and thus determine the damaged area in the coating layer 111.

[0034] Further, the repair device is arranged on the main body 140, the control device is electrically connected with the multiple first detection devices and the repair device, and the control device controls the repair device to repair the damaged area according to the detection result of the first detection device after receiving the detection result of the first detection device. In this way, the self-repairing function of the coating layer 111 on the blade 110 can be realized.

[0035] By arranging the first detection device and the repair device on the blade 110, the damaged state of the coating layer 111 of the blade 110 can be detected by the first detection device, and thus the damaged area is determined, the repair device can repair the damaged area, and thus the self-repairing function of the coating layer 111 of the blade 110 is realized, the noise increase caused by the damage of the coating layer 111 is avoided, the reliability of the fan blade assembly 100 is improved, and the service life of the fan blade assembly 100 is prolonged.

[0036] In some embodiments, optionally, any first detection device group 120 includes: a stress detection device for detecting the stress of the coating layer 111, and the area in the coating layer 111 with a stress greater than a stress threshold is a damaged area; and a crack detection device for detecting cracks in the coating layer 111, and the area in the coating layer 111 with cracks is a damaged area.

[0037] In this embodiment, the first detection device group 120 is defined. The first detection device group 120 includes a stress detection device and a crack detection device. The stress detection device is used to detect the stress of the coating layer 111, and the stress detection device compares the detected stress value with a stress threshold value. If the stress of a certain region of the coating layer 111 is greater than the stress threshold value, it is determined that the region is a damaged region. Understandably, if the coating layer 111 is subjected to a greater stress, it is easy to cause the coating layer 111 to be cracked or damaged. Therefore, the stress of the coating layer 111 can be detected to determine whether the coating layer 111 is damaged.

[0038] Further, the crack detection device can detect the crack of the coating layer 111. If the crack detection device detects that a certain region of the coating layer 111 has a crack, it is determined that the region is a damaged region.

[0039] The stress detection device can be a strain gauge sensor or a piezoelectric sensor, and the crack detection device can be a resistance sensor. That is, a resistance network is arranged in the coating layer 111. When the coating layer 111 has a crack, the resistance network is cut off, the resistance value changes, and the crack of the coating layer 111 is detected. The crack detection device can also be an acoustic wave emission sensor, which detects the crack of the coating layer 111 through acoustic waves.

[0040] By providing the stress detection device and the crack detection device in the first detection device group 120, the damaged region in the coating layer 111 can be detected.

[0041] In some embodiments, the repair device includes a first driving device arranged on the main body 140, and the first driving device is electrically connected to the control device. The repair device also includes at least one container for storing a repair agent. The container is connected to the first driving device, and the control device controls the first driving device to move the container to the damaged region and cover the damaged region with the repair agent to repair the damaged region.

[0042] In this embodiment, a structure of the repair device is defined. The repair device includes a first driving device and at least one container. The container contains a repair agent for repairing the coating layer 111, and the driving device can drive the container to move the repair agent to the damaged region and repair the coating layer 111 of the damaged region. Specifically, the first driving device is arranged on the main body 140, and the control device is connected to the first driving device. The number of containers is at least one, and the containers are connected to the first driving device. The control device can control the first driving device to move the containers to the damaged region. The containers store the repair agent, which can repair the coating layer 111 of the damaged region. When the containers move to the damaged region, the first driving device controls the containers to cover the damaged region with the repair agent, so that the repair agent repairs the coating layer 111 of the damaged region.

[0043] The repairing agent can be an epoxy resin repairing agent, an acrylic repairing agent, or other common types of repairing agents.

[0044] In some embodiments, the repairing device optionally comprises a second driving device arranged on the main body 140 and electrically connected to the control device, and a heating device connected to the second driving device. The control device controls the second driving device to drive the heating device to move to the damaged area and heat the damaged area, so as to repair the damaged area.

[0045] In this embodiment, another structure of the repairing device is limited. The repairing device comprises a second driving device and a heating device. The second driving device drives the heating device to move to the damaged area to heat the coating layer 111 of the damaged area. When the coating layer 111 is a thermoplastic coating layer 111, the heated coating layer 111 will soften and deform. The coating layer 111 has a certain fluidity to eliminate the cracks in the coating layer 111, thereby repairing the damaged area.

[0046] Specifically, the second driving device is arranged on the main body 140 and electrically connected to the control device. The heating device is connected to the second driving device. The control device controls the second driving device to drive the heating device to move to the damaged area. The heating device can heat the damaged area to soften and flow the coating layer 111 of the damaged area, thereby eliminating the cracks in the damaged area. After the heating device stops heating, the coating layer 111 of the damaged area cools and solidifies.

[0047] The heating device can be a hot air gun, an infrared heater, or a laser heating gun.

[0048] By arranging the second driving device and the heating device in the repairing device, the damaged area can be heated and repaired by the heating device. This repairing method is suitable for repairing the thermoplastic coating layer 111, has high repairing efficiency, and has low repairing cost.

[0049] In some embodiments, the fan blade assembly 100 further comprises a plurality of second detection devices, at least a portion of any second detection device is arranged on a corresponding blade 110, the second detection device is electrically connected with the control device, the coating layer 111 of any blade 110 comprises a plurality of coating areas, the second detection device is configured to detect the noise absorption rate of the plurality of coating areas of the corresponding blade 110, the control device determines the coating area with a noise absorption rate less than the noise absorption rate threshold as an unqualified area according to the detection result of the second detection device; wherein the coating layer 111 is a coating layer 111 with pores, any coating area is provided with a heating element, the heating element is electrically connected with the control device, and the control device controls the heating element of the unqualified area to heat the unqualified area to adjust the pores of the unqualified area, thereby adjusting the noise absorption rate of the unqualified area.

[0050] In this embodiment, the structure of the fan blade assembly 100 is further limited. The fan blade assembly 100 further comprises a plurality of second detection devices, the second detection devices are configured to detect the noise absorption rate of the coating layer 111, and adjust the noise absorption rate of the area when it is detected that there is an area with an unqualified noise absorption rate in the coating layer 111, to avoid the phenomenon that the noise absorption rate of the coating layer 111 is reduced.

[0051] Specifically, the number of second detection devices is a plurality, and the plurality of second detection devices are arranged on the plurality of blades 110, respectively. The second detection devices are configured to detect the noise absorption rate of the coating layer 111. The coating layer 111 of any blade 110 comprises a plurality of coating areas, and the second detection devices are configured to detect the noise absorption rate of the plurality of coating areas of the corresponding blade 110. The second detection devices are electrically connected with the control device, and the control device can receive the detection result of the second detection devices. The control device compares the detection result of the second detection devices with the noise absorption rate threshold, and determines the coating area with a noise absorption rate less than the noise absorption rate threshold as an unqualified area.

[0052] In one possible embodiment, the second detection device comprises a sound wave probe and an analyzer, wherein the sound wave probe is arranged on the blade 110, the sound wave probe is configured to detect the direction and size of the sound wave, the analyzer is arranged on the main body 140, the analyzer is electrically connected with the sound wave probe, the analyzer can analyze the detection result of the sound wave probe and calculate the noise absorption rate in real time. The analyzer is electrically connected with the control device, and the control device can receive the calculation result of the analyzer.

[0053] Further, in order to enable the coating layer 111 to absorb noise, the coating layer 111 in the present application is a coating layer 111 with pores, and the coating layer 111 is a temperature-responsive coating layer 111, i.e., the porosity of the coating layer 111 is related to the temperature of the coating layer 111. Any coating area is provided with a heating element, and the heating element is electrically connected to a control device. After determining the unqualified area, the control device controls the heating element in the unqualified area to operate to heat the unqualified area. Since the coating layer 111 is a temperature-responsive coating layer 111, the pores in the unqualified area will change after the unqualified area is heated, thereby causing the porosity of the unqualified area to change. The noise absorption rate of the coating layer 111 is related to the porosity, so the noise absorption rate of the unqualified area can be adjusted to be within the qualified range.

[0054] By providing the second detection device in the fan blade assembly 100 and the heating element in each coating area of the coating layer 111, the noise absorption rate of each coating area can be detected by the second detection device, and the noise absorption rate of the unqualified area can be adjusted by the heating element. Thus, the noise absorption rate of the coating layer 111 can be adjusted in real time to ensure that the noise absorption rate of the coating layer 111 remains within the qualified range.

[0055] In some embodiments, optionally, the fan blade assembly 100 further comprises a plurality of connecting members for connecting the first detection device and the second detection device to the blade 110.

[0056] In this embodiment, the structure of the fan blade assembly 100 is further limited. The fan blade assembly 100 further comprises a plurality of connecting members for connecting the first detection device and the second detection device to the blade 110. In one possible embodiment, the connecting member is a screw. The connecting member can also be a connecting device with a certain height, so that the height of the first detection device and the second detection device can be raised to facilitate the first detection device and the second detection device to extend into the coating layer 111.

[0057] In some embodiments, optionally, as shown in Figure 3 The end of the blade 110 away from the main body 140 is a tip end 112, and the fan blade assembly 100 further comprises a plurality of vortex generator groups 130 respectively installed on the surfaces of the plurality of blades 110, and the vortex generator group 130 is close to the tip end 112 of the corresponding blade 110.

[0058] In this embodiment, the structure of the fan blade assembly 100 is further defined. The fan blade assembly 100 further comprises a plurality of vortex generator sets 130, which are capable of improving the airflow distribution around the blades 110 and thus reducing vortex noise. Specifically, the plurality of vortex generator sets 130 are respectively mounted on the surfaces of the plurality of blades 110, and the blades 110 have tip ends 112 at the ends away from the main body 140, and the vortex generator sets 130 are close to the tip ends 112 of the corresponding blades 110. Understandably, the noise generated by the blades 110 mainly comes from the cavitation noise of the tip ends 112, and by arranging the vortex generator sets 130 close to the tip ends 112, the airflow distribution near the tip ends 112 of the blades 110 can be effectively improved, and thus the vortex noise can be effectively reduced.

[0059] In some embodiments, as shown in Figure 3 and Figure 4 any one of the vortex generator sets 130 comprises a plurality of vortex generator assemblies 131, which are arranged in sequence along the length direction of the blades 110, and the distance between the vortex generator assembly 131 farthest from the tip end 112 and the tip end 112 is less than or equal to one third of the length of the blade 110.

[0060] In this embodiment, the arrangement position of the vortex generator set 130 is further defined. Any one of the vortex generator sets 130 comprises a plurality of vortex generator assemblies 131, which are arranged in sequence along the length direction of the blades 110, and the length direction of the blades 110 is the direction from the tip end 112 to the end of the blade 110 connected to the main body 140. Among them, the distance between the vortex generator assembly 131 farthest from the tip end 112 and the tip end 112 is less than or equal to one third of the length of the blade 110, that is, the vortex generator set 130 is arranged between the tip end 112 and one third of the blade 110. In this way, on the one hand, the vortex generator set 130 is close to the tip end 112, which is conducive to the vortex generator set 130 improving the airflow distribution near the tip end 112 and thus reducing the vortex noise, and on the other hand, the vortex generator set 130 has sufficient installation space.

[0061] As shown in Figure 3 the length of the blade 110 is L, and the distance between the vortex generator assembly 131 farthest from the tip end 112 and the tip end 112 is 1 / 3L.

[0062] In some embodiments, as shown in Figure 4As shown, along the length direction of the blade 110, two adjacent vortex generator assemblies 131 form a group, any vortex generator assembly 131 comprises: a vortex generator 132; a mounting member for movably mounting the vortex generator 132 to the blade 110, the mounting member is electrically connected to the control device, the vortex generators 132 of the two vortex generator assemblies 131 in the same group have an included angle, the included angle between the vortex generators 132 of the two vortex generator assemblies 131 in the same group towards the windward side of the blade 110 is a windward angle, the mounting member can drive the vortex generator 132 to rotate relative to the blade 110 to adjust the windward angle; the fan blade assembly 100 further comprises: a plurality of third detection devices respectively mounted on the plurality of blades 110, the third detection devices are used for detecting the airflow velocity and / or noise value around the corresponding blade 110, the third detection devices are electrically connected to the control device, and the control device controls the mounting member to adjust the windward angle according to the detection results of the third detection devices.

[0063] In this embodiment, the structure of the vortex generator assembly 131 is limited. Any vortex generator assembly 131 comprises a vortex generator 132 and a mounting member, the vortex generator 132 is movably mounted to the blade 110 through the mounting member, and the mounting member can drive the vortex generator 132 to rotate relative to the blade 110. Along the length direction of the blade 110, two adjacent vortex generator assemblies 131 form a group, the vortex generators 132 of the two vortex generator assemblies 131 in the same group have an included angle. When the main body 140 drives the blade 110 to rotate, the blade 110 has a windward side and a leeward side, and the included angle between the vortex generators 132 of the two vortex generator assemblies 131 in the same group towards the windward side of the blade 110 is a windward angle. As shown, Figure 4 The illustrated angle α is the windward angle. The improvement effect of the vortex generator group 130 on the airflow distribution is related to the windward angle, when the vortex noise is large, the improvement effect of the vortex generator group 130 on the airflow distribution can be adjusted by adjusting the windward angle, thereby improving the noise reduction level of the vortex generator group 130. Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The vortex generator 132 is shown.

[0064] In a possible embodiment, the mounting member comprises a base and a rotating shaft, the control device further comprises a driving motor, the base is fixedly mounted to the blade 110, one end of the rotating shaft is fixedly connected to the vortex generator 132, and the other end is rotatably mounted to the base, the rotating shaft is connected to the driving motor, and the control device controls the rotating shaft to rotate through the driving motor, thereby driving the vortex generator 132 to rotate relative to the blade 110.

[0065] Specifically, the fan blade assembly 100 further comprises a plurality of third detection devices, each of which is installed on a blade 110, and is configured to detect the airflow velocity and / or noise value around the corresponding blade 110. If the airflow velocity and / or noise value around the blade 110 exceeds the preset range, it indicates that the noise reduction capability of the vortex generator set 130 is insufficient, and the windward angle of the vortex generator set 130 needs to be adjusted. The control device is electrically connected with the third detection device, and is configured to receive the detection result of the third detection device. The control device is also electrically connected with the mounting member, and is configured to control the mounting member to adjust the angle of the windward angle according to the detection result of the third detection device when the third detection device detects that the airflow velocity and / or noise value around the blade 110 exceeds the preset range, so as to improve the improvement effect of the vortex generator set 130 on the airflow distribution, and further improve the noise reduction level of the vortex generator set 130.

[0066] In a possible embodiment, the third detection device comprises an anemometer and / or a noise sensor.

[0067] The second aspect of the technical solution of the present application provides a fan comprising the fan blade assembly 100 according to the first aspect of the present application.

[0068] The fan according to the second aspect of the present application comprises a plurality of fan blade assemblies 100 according to the first aspect of the present application, and thus has all the beneficial effects of the fan blade assembly 100 according to the first aspect of the present application.

[0069] In the present application, the terms "first", "second", "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; the term "a plurality of" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral connection; "connection" can be direct connection, or indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0071] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "certain embodiments", and the like is intended to indicate that the described implementation, feature, structure, material or characteristic is included in at least one embodiment or example of the application. The illustrative representations of the above terms in the specification are not necessarily referring to the same embodiment or example. Moreover, the described implementation, feature, structure, material or characteristic can be combined in any one or more embodiments or examples in a suitable manner.

[0072] The above only is the preferred embodiment of the present application, and is not intended to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wind turbine blade assembly, characterized in that, include: main body; Multiple blades are connected to the main body, and the surface of any one of the blades is covered with a coating layer that can absorb noise. Multiple first detection device groups are respectively disposed on multiple blades, and at least a portion of any first detection device group is located within the coating layer of the corresponding blade. The first detection device group is used to detect the damaged area of ​​the coating layer. A repair device is disposed on the main body, and the repair device is used to repair the damaged area of ​​the coating layer; A control device is disposed in the main body. The control device is electrically connected to a plurality of the first detection device groups and the repair device. The control device can drive the repair device to operate according to the detection results of the first detection device groups in order to repair the damaged area.

2. The wind turbine blade assembly according to claim 1, characterized in that, Any of the first detection device groups includes: A stress detection device is used to detect the stress in the coating layer, and the area in the coating layer where the stress is greater than a stress threshold is the damaged area; A crack detection device is used to detect cracks in the coating layer, and the area in the coating layer where cracks appear is the damaged area.

3. The wind turbine blade assembly according to claim 1, characterized in that, The repair device includes: A first driving device is disposed on the main body, and the first driving device is electrically connected to the control device; At least one container for storing a repair agent, the container being connected to the first drive device, and the control device controlling the first drive device to move the container to the damaged area and cover the damaged area with the repair agent to repair the damaged area.

4. The wind turbine blade assembly according to claim 1, characterized in that, The repair device includes: A second driving device is disposed on the main body, and the second driving device is electrically connected to the control device; A heating device is connected to the second driving device. The control device controls the second driving device to move the heating device to the damaged area and heat the damaged area to repair it.

5. The wind turbine blade assembly according to claim 1, characterized in that, Also includes: Multiple second detection devices are provided, at least a portion of any second detection device is disposed on the corresponding blade, the second detection device is electrically connected to the control device, the coating layer of any blade includes multiple coating areas, the second detection device is used to detect the noise absorption rate of the multiple coating areas of the corresponding blade, and the control device determines, based on the detection results of the second detection device, that the coating areas with a noise absorption rate less than a noise absorption rate threshold in the multiple coating areas are unqualified areas. The coating layer is a porous coating layer, and a heating element is provided in any of the coating areas. The heating element is electrically connected to the control device. The control device controls the heating element in the defective area to heat the defective area in order to adjust the porosity of the defective area and thus adjust the noise absorption rate of the defective area.

6. The wind turbine blade assembly according to claim 5, characterized in that, Also includes: Multiple connectors are provided for connecting the first detection device and the second detection device to the blade.

7. The wind turbine blade assembly according to any one of claims 1 to 6, characterized in that, The end of the blade furthest from the main body is the blade tip, and the wind turbine blade assembly further includes: Multiple vortex generator sets are respectively installed on the surface of multiple blades, and the vortex generator sets are close to the blade tips of the respective blades.

8. The wind turbine blade assembly according to claim 7, characterized in that, Any of the vortex generator groups includes multiple vortex generator components, which are arranged sequentially along the length of the blade. The distance between the vortex generator component with the largest distance from the blade tip and the blade tip is less than or equal to one-third of the blade length.

9. The wind turbine blade assembly according to claim 8, characterized in that, Along the length direction of the blade, two adjacent vortex generator assemblies form a group, and each of the vortex generator assemblies includes: Eddy current generator; The mounting component is used to movably mount the vortex generator to the blade. The mounting component is electrically connected to the control device. There is an angle between the vortex generators of two vortex generator assemblies in the same group. The angle between the vortex generators of two vortex generator assemblies in the same group facing the windward side of the blade is the windward angle. The mounting component can drive the vortex generator to rotate relative to the blade to adjust the windward angle. The wind turbine blade assembly also includes: Multiple third detection devices are respectively installed on multiple blades. The third detection devices are used to detect the airflow velocity and / or noise value around the corresponding blade. The third detection devices are electrically connected to the control device. The control device controls the mounting component to adjust the angle of attack based on the detection results of the third detection devices.

10. A fan, characterized in that, include: The wind turbine blade assembly as described in any one of claims 1 to 9.

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