Fan end cover assembly, fan assembly and air conditioner indoor unit

Abstract

The present disclosure relates to a fan end cover assembly, a fan assembly and an air conditioner indoor unit. The fan end cover assembly comprises: an end cover structure for being connected at the end side of a fan, the end cover structure comprising a main body piece and a split piece connected in cooperation; and a magnetic ring inserted and matched with the end cover structure on the side of the end cover structure facing away from the fan, wherein the distance of the magnetic ring extending into the end cover structure is not greater than 5 mm. The annular magnetic ring is fixedly connected by being inserted into the end cover structure, thereby reducing the weak magnetic area. Furthermore, the distance of the magnetic ring extending into the end cover structure is set to be not greater than 5 mm, so that the magnetic ring extending into the end cover structure does not exceed 5 mm to cause the weak magnetic area to be excessively large, thereby ensuring the waveform of the magnetic ring, so that the motor cooperating with the magnetic ring runs smoothly and has reliable and stable performance.

Description

Technical Field

[0001] This disclosure relates to the field of fan technology, and in particular to a fan end cover assembly, a fan component, and an indoor air conditioning unit. Background Technology

[0002] In the fan end cover assembly of the cross-flow magnetic fan blade, the end cover structure is connected to the magnet structure. The magnet structure is electromagnetically coupled with the motor so that when the motor is energized, the magnet structure drives the end cover structure to rotate, thereby driving the fan. In related technologies, due to limitations in magnet manufacturing processes or magnetization equipment, the magnet structure may have weak magnetic regions. For example, when the magnet structure is bowl-shaped, the bottom of the bowl and the part connected to the bottom have weak magnetism. This makes it difficult to ensure optimal matching with the motor, affecting the motor's performance. Summary of the Invention

[0003] To overcome the problems existing in the related technologies, this disclosure provides a fan end cover assembly, a fan component, and an indoor air conditioning unit.

[0004] According to a first aspect of the present disclosure, a fan end cover assembly is provided, comprising: an end cover structure for connection to a fan end side, the end cover structure including a main body and a split part that are mated together; and a magnetic ring that is inserted into the end cover structure on the side of the end cover structure opposite to the fan, wherein the magnetic ring extends into the end cover structure by a distance not greater than 5 mm.

[0005] Optionally, the magnetic ring extends into the end cap structure by a distance of not less than 4 mm.

[0006] Optionally, along the axial direction of the fan, the insertion depth of the main body and the split member is not less than 2.7 mm.

[0007] Optionally, the insertion depth of the main body and the split piece along the axial direction of the fan is no more than 3.8 mm.

[0008] Optionally, along the radial direction of the fan, the wall thickness of the main body and the wall thickness of the split member together constitute the wall thickness of the end cap structure.

[0009] Optionally, the number of the split components is at least one.

[0010] Optionally, the main body is used to connect to the end side of the fan, the splitting component is disposed on the side of the main body facing away from the fan, and the magnetic ring is inserted into the splitting component.

[0011] Optionally, the end cap structure includes a circumferential wall that surrounds the periphery, and the magnetic ring is inserted into the circumferential wall.

[0012] Optionally, the outer wall surface of the circumferential wall is the outer wall surface of the main body, or the outer wall surface of the circumferential wall is the outer wall surface of the split component.

[0013] Optionally, the circumferential wall includes a main wall and an extension wall, the magnetic ring is inserted into the main wall, the extension wall extends axially from the main wall toward a side away from the fan, and the extension wall is located radially spaced around the outer periphery of the magnetic ring.

[0014] Optionally, the wall thickness of the circumferential wall is 1.5~3mm.

[0015] Optionally, the wall thickness of the main body and the split part is 1.5~3mm respectively.

[0016] Optionally, along the axial direction of the fan, the ratio of the size of the area of ​​the magnetic ring directly facing the motor to the size of the entire magnetic ring is 0.8 to 0.9.

[0017] Optionally, the magnetic ring includes a ring body and a plug ring, the plug ring extending axially at one end of the ring body, a plug groove formed on the end cap structure, the plug ring being plugged into the plug groove, and the wall thickness of the plug ring being less than the wall thickness of the ring body.

[0018] Optionally, the magnetic ring includes a positioning protrusion that protrudes radially from the insertion ring, and the end cap structure has a positioning groove to accommodate the positioning protrusion.

[0019] Optionally, the number of positioning protrusions is multiple, and the multiple positioning protrusions are spaced apart in the circumferential direction of the insertion ring.

[0020] According to a second aspect of the present disclosure, a fan assembly is provided, including a fan, a motor, and a fan end cover assembly provided in the present disclosure. The fan and the motor are disposed on both sides of the fan end cover assembly and connected by a rotating shaft. The magnetic ring is disposed on the radially outer side of the motor.

[0021] According to a third aspect of the present disclosure, an indoor air conditioning unit is provided, including the fan assembly provided in the present disclosure.

[0022] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: The annular magnetic ring is fixedly connected by inserting it into the end cover structure, reducing the weak magnetic field area. Furthermore, the distance the magnetic ring extends into the end cover structure is set to no more than 5mm, ensuring that the magnetic ring extending into the end cover structure will not exceed 5mm, thus preventing an excessively large weak magnetic field area. This guarantees the waveform of the magnetic ring, resulting in smooth operation and reliable, stable performance of the motor it is paired with.

[0023] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0025] Figure 1 This is a cross-sectional view of a fan end cover assembly according to an exemplary embodiment.

[0026] Figure 2 This is illustrated according to an exemplary embodiment. Figure 1 Enlarged view of part A in the image.

[0027] Figure 3 This is a cross-sectional view of another fan end cover assembly according to an exemplary embodiment.

[0028] Figure 4 This is a cross-sectional view of another fan end cover assembly according to an exemplary embodiment.

[0029] Figure 5 This is a schematic diagram of a magnetic ring according to an exemplary embodiment.

[0030] Figure 6 This is a schematic diagram illustrating a split component according to an exemplary embodiment.

[0031] Figure 7 This is an exploded schematic diagram of a fan end cover assembly according to an exemplary embodiment.

[0032] Explanation of reference numerals in the attached figures 1-Motor, 10-End cover structure, 101-Circumferential wall, 1011-Main wall, 1012-Extension wall, 102-Insertion groove, 103-Positioning groove, 11-Main body, 12-Separation part, 20-Magnetic ring, 21-Ring body, 22-Insertion ring, 23-Positioning protrusion, 30-Rotating shaft. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0034] Reference Figures 1 to 4The first aspect of this disclosure provides a fan end cover assembly, which includes an end cover structure 10 and a magnetic ring 20. The end cover structure 10 is connected to the end side of the fan for coaxial connection and protection. In this embodiment, the end cover structure 10 may include a main body 11 and a splitting part 12 that are connected to each other; that is, the end cover structure 10 is split into multiple parts to ensure the size of the end cover structure 10, thereby ensuring a more accurate installation position of the magnetic ring 20. The magnetic ring 20 is inserted into the end cover structure 10 on the side facing away from the fan. For example, the magnetic ring 20 can be inserted into the end cover structure 10, meaning the magnetic ring 20 can extend into the end cover structure 10. This insertion can be achieved through injection molding.

[0035] The area where the magnet mates with the end cap structure is prone to becoming a weak magnetic field. In related technologies, the bottom of a bowl-shaped magnet fits snugly against the end cap structure. This type of magnet has a large weak magnetic field, affecting the magnet waveform and thus impacting motor performance. Therefore, in this embodiment, the magnetic ring 20 is inserted into the end cap structure 10 to reduce the mating area, and the distance it extends into the end cap structure 10 is no more than 5mm. Figure 2 As shown, the distance 'a' can be 5mm, 4mm, etc. It should be noted that... Figure 1 For example, the left side of the figure is used to install the fan, and the right side is used to install the motor 1. The fan, the fan end cover assembly, and the motor 1 are supported by the rotating shaft 30 when they rotate.

[0036] Through the above technical solution, the annular magnetic ring 20 is fixedly connected by inserting it into the end cover structure 10, which reduces the weak magnetic area. Furthermore, the distance from which the magnetic ring 20 extends into the end cover structure 10 is set to no more than 5mm, so that the magnetic ring 20 extending into the end cover structure 10 will not exceed 5mm, thus preventing the weak magnetic area from being too large. This ensures the waveform of the magnetic ring 20, making the motor 1 that it is paired with run smoothly and has reliable and stable performance.

[0037] The distance 'a' from which the magnetic ring 20 extends into the end cap structure 10 can be set to be no less than 4 mm, for example, 4 mm, 4.5 mm or 5 mm, to ensure that the magnetic ring 20 and the end cap structure 10 have sufficient insertion distance and to ensure the connection stability between the magnetic ring 20 and the end cap structure 10.

[0038] Along the axial direction of the fan, the ratio of the size of the area of ​​the magnetic ring 20 directly facing the motor 1 to the size of the entire magnetic ring 20 can be 0.8 to 0.9, that is, as shown below. Figure 2As shown, the b / n ratio is 0.8~0.9, for example, it can be 0.8, 0.85, 0.87, 0.89 or 0.9. Setting the b / n ratio to 0.8~0.9 ensures a sufficiently large effective magnetic field area, guaranteeing effective cooperation between the magnetic ring 20 and the motor 1, and ensuring motor performance. In one embodiment, the value of b can be 20 mm, and the value of n can be 23 mm.

[0039] Reference Figure 5 The magnetic ring 20 may include a ring body 21 and a connector ring 22, the connector ring 22 extending axially at one end of the ring body 21. (Refer to...) Figure 6 An insertion groove 102 can be formed on the end cap structure 10. The insertion groove 102 can be formed on the main body 11 or the split part 12 described below. The insertion ring 22 is inserted into the insertion groove 102. The wall thickness of the insertion ring 22 can be less than the wall thickness of the ring body 21 to reduce the insertion area, reduce the weak magnetic field area, and ensure motor performance.

[0040] Reference Figure 5 The magnetic ring 20 may include a positioning protrusion 23, which protrudes radially from the insertion ring 22. The positioning protrusion 23 may protrude radially inward or radially outward. (See reference...) Figure 6 A positioning groove 103 can be formed on the end cap structure 10 to accommodate the positioning protrusion 23. The positioning protrusion 23 and the positioning groove 103 can circumferentially limit the magnetic ring 20 and the end cap structure 10 to prevent relative circumferential rotation.

[0041] The number of positioning protrusions 23 can be multiple, and the multiple positioning protrusions 23 can be spaced apart in the circumferential direction of the insertion ring 22.

[0042] When the end cap structure 10 includes a main body member 11 and a split member 12 that are mating and connected, the wall thickness of the main body member 11 and the wall thickness of the split member 12 can together constitute the wall thickness of the end cap structure 10 in the radial direction of the fan. It is understood that, referring to... Figures 1 to 4The fan end cover assembly is a circumferentially surrounding disc-shaped structure with a circumferentially surrounding wall 101. The magnetic ring 20 is inserted into this circumferential wall 101, and the wall thickness of the end cover structure 10 refers to the wall thickness of this circumferential wall 101. When the end cover structure 10 is not disassembled, the circumferential wall 101 is too thick. During direct injection molding, due to shrinkage, the shrinkage of the circumferential wall 101 will be large, resulting in uneven wall thickness. This leads to inaccurate installation of the magnetic ring 20, causing the fan and motor to lack coaxiality, resulting in poor noise during use. In this embodiment, the end cover structure 10 is disassembled into multiple parts, including a main body 11 and disassembled parts 12, so that the wall thickness of the circumferential wall 101 is composed of multiple wall thicknesses. This avoids shrinkage caused by excessive material thickness, thereby ensuring the installation accuracy of the magnetic ring 20 and the motor, and preventing poor noise.

[0043] To ensure the reliability of the connection between the main body component 11 and the split component 12, the insertion depth of the main body component 11 and the split component 12 along the axial direction of the fan can be set to be no less than 2.7mm. Figure 2 As shown, the distance c is not less than 2.7mm, for example, it can be 2.7mm, 2.75mm or 3.75mm.

[0044] To avoid the structural strength being affected by the excessively deep insertion of the main body 11 and the split part 12, which would result in an insufficient remaining area, the insertion depth of the main body 11 and the split part 12 along the axial direction of the fan is set to no more than 3.8 mm. For example, it can be 2.7 mm, 2.75 mm, 3.5 mm, 3.75 mm, or 3.8 mm.

[0045] In this embodiment of the disclosure, the main body 11 is used to connect with the wind turbine end side, and the arrangement orientation of the main body 11 and the split part 12 can be varied. For example, in Figure 1 and Figure 3 In the illustrated embodiment, the splitter 12 can be disposed on the side of the main body 11 facing away from the fan. In this embodiment, the magnetic ring 20 can be inserted into the splitter 12. Figure 4 In the illustrated embodiment, the splitting component 12 can be disposed on the side of the main body 11 facing the wind turbine. In this embodiment, the magnetic ring 20 can be inserted into the main body 11. When the magnetic ring 20 is inserted into the splitting component 12, it can first be... Figure 5 Magnetic ring 20 in Figure 6 The 12 disassembled parts are injection molded into one piece, and then as follows: Figure 7As shown, the disassembled component 12, which is assembled with the magnetic ring 20, is inserted into the main component 11. After insertion, ultrasonic welding can be performed in all directions in the insertion area. Compared with bonding or screwing, ultrasonic welding can ensure the thickness of the main component 11 and the disassembled component 12, avoiding uneven thickness caused by the presence of adhesive layers and the pressure of screwing causing local areas to be compressed and affecting the thickness.

[0046] As described above, the end cap structure 10 includes a circumferential wall 101 surrounding the periphery, to which the magnetic ring 20 is inserted. Figure 3 and Figure 4 In the illustrated embodiment, the outer wall surface of the circumferential wall 101 can be the outer wall surface of the main body 11, that is, the inner ring of the end cap structure 10 is split. In other embodiments, refer to Figure 1 and Figure 2 The outer wall surface of the circumferential wall 101 can be the outer wall surface of the split part 12, that is, the outer ring of the end cap structure 10 is split.

[0047] In this embodiment of the disclosure, the number of split pieces 12 can be at least one, such as the one shown in the figure, or two or three depending on the wall thickness of the circumferential wall 101. Multiple split pieces 12 can be inserted into the main body 11 in the radial direction in sequence, or the split pieces 12 can be inserted into each other.

[0048] Reference Figures 2 to 4 The circumferential wall 101 may include a main wall 1011 and an extension wall 1012. When the end cap structure 10 includes a main body 11 and a split member 12, the main wall 1011 may be formed by the main body 11 and the split member 12 together, and the extension wall 1012 may be formed by one of the main body 11 and the split member 12. The magnetic ring 20 is inserted into the main wall 1011, and the extension wall 1012 extends axially from the main wall 1011 toward the side away from the fan, and the extension wall 1012 is radially spaced on the outer periphery of the magnetic ring 20. After the motor is placed in place, its mounting base will be placed on the outer periphery of the magnetic ring 20. The area radially spaced between the extension wall 1012 and the magnetic ring 20 can be used to accommodate the mounting base. The extension wall 1012 can also serve as a dustproof barrier to protect the mounting base.

[0049] In this embodiment, the wall thickness of the circumferential wall 101 can be 1.5~3mm, for example, 1.5mm, 2mm or 3mm, so as to ensure that the circumferential wall 101 has sufficient installation strength and is not easily broken, and to ensure that the magnetic ring 20 is installed stably.

[0050] When the end cap structure 10 includes a main body 11 and a split part 12, the wall thickness of the main body 11 and the split part 12 can be 1.5~3mm respectively, so as to ensure that the main body 11 and the split part 12 have sufficient wall thickness during molding and are not easy to break, and also to ensure that there is little shrinkage during molding, so as to ensure the accurate installation position of the magnetic ring 20.

[0051] According to a second aspect of the present disclosure, a fan assembly is provided, including a fan (not shown in the figure), a motor 1, and the aforementioned fan end cover assembly. The fan and motor 1 are disposed on opposite sides of the fan end cover assembly and connected by a rotating shaft 30. A magnetic ring 20 is disposed radially outward of the motor. This fan assembly has all the beneficial effects of the aforementioned fan end cover assembly, which will not be elaborated further here.

[0052] According to a third aspect of the present disclosure, an indoor air conditioning unit is provided, which includes the above-described fan assembly and has all the beneficial effects of the above-described fan assembly, which will not be repeated here.

[0053] In the above detailed description, reference has been made to the accompanying drawings, which illustrate specific aspects of this disclosure by way of illustration. In this regard, terms indicating direction or positional relationship, such as “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential,” are used with reference to the orientation of the described figures. Since components of the described device can be positioned in multiple different orientations, directional terms are used for illustrative purposes and not for limitation. It should be understood that other aspects can be utilized and structural or logical changes can be made without departing from the concept of this disclosure. Therefore, the following detailed description should not be considered limiting.

[0054] It should be understood that, unless otherwise specifically indicated, features of various embodiments of this disclosure described herein can be combined with each other. As used herein, the term “and / or” includes any one of the relevant listed items and any combination of any two or more; similarly, “at least one of…” includes any one of the relevant listed items and any combination of any two or more.

[0055] It should be understood that, unless otherwise expressly specified and limited, the terms "joining," "attaching," "installing," "connecting," "linking," "fixing," etc., used in the embodiments of this disclosure should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms herein based on the specific circumstances.

[0056] Furthermore, the term "above" as used herein with respect to components, elements, or material layers formed or located "above" a surface may be used to indicate that the component, element, or material layer is "indirectly" positioned (e.g., placed, formed, deposited, etc.) on the surface such that one or more additional components, elements, or layers are arranged between the surface and the component, element, or material layer. However, the term "above" as used with respect to components, elements, or material layers formed or located "above" a surface may also optionally have a specific meaning: that the component, element, or material layer is "directly" positioned (e.g., placed, formed, deposited, etc.) on the surface, for example, in direct contact with the surface.

[0057] Although terms such as “first,” “second,” and “third” may be used herein to describe various components, parts, regions, layers, or sections, these components, parts, regions, layers, or sections are not limited to these terms. Rather, these terms are used only to distinguish one component, part, region, layer, or section from another. Therefore, without departing from the teachings of the examples described herein, the first component, part, region, layer, or section mentioned in the examples may also be referred to as the second component, part, region, layer, or section. Furthermore, the terms “first” and “second” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as “first” or “second” may explicitly or implicitly include at least one of that feature. In the description herein, “a plurality” means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] It should be understood that spatial relative terms, such as “above,” “upper,” “below,” and “lower,” are used herein to describe the relationship between one element and another shown in the figures. In addition to the orientation depicted in the figures, these spatial relative terms are also intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is flipped, an element described as “above” or “upper” relative to another element would be “below” or “lower” relative to that other element. Thus, depending on the spatial orientation of the device, the term “above” encompasses both above and below orientations. Devices may have other orientations (e.g., rotated 90 degrees or in other orientations), and the spatial relative terms used herein should be interpreted accordingly.

[0059] Furthermore, the term “exemplary” is used herein to mean serving as an example, instance, or illustration. Any aspect or design described herein as “exemplary” is not necessarily to be construed as advantageous compared to other aspects or designs. Rather, the use of the term “exemplary” is intended to present the concept in a concrete manner. As used herein, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless otherwise specified or clear from the context, “X applies A or B” is intended to mean any of the natural inclusive arrangements. That is, “X applies A or B” satisfies any of the foregoing instances if X applies A; X applies B; or both X applies A and B. Additionally, unless otherwise specified or clear from the context to refer to the singular form, the articles “a” and “an” as used in this application and the appended claims are generally understood to mean “one or more.”

[0060] Similarly, although this disclosure has been shown and described with respect to one or more implementations, equivalent variations and modifications will occur to those skilled in the art upon reading and understanding this specification and the accompanying drawings. This disclosure includes all such modifications and variations and is limited only by the scope of the claims. In particular, with respect to the various functions performed by the components described above (e.g., elements, resources, etc.), unless otherwise indicated, the terminology used to describe such components is intended to correspond to any component (functionally equivalent) that performs the specific function of the described component, even if structurally not equivalent to the disclosed structure. Furthermore, although specific features of this disclosure may have been disclosed with respect to only one of several implementations, such features may be combined with one or more other features of other implementations, as may be desired and advantageous to any given or particular application. Moreover, with regard to the terms “comprising,” “owning,” “having,” “having,” or variations thereof as used in the detailed description or claims, such terms are intended to be inclusive in a manner similar to the term “including.”

[0061] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0062] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A fan end cover assembly, characterized in that, include: An end cap structure for connection to the end side of a wind turbine, the end cap structure comprising a main body component and a split component that are connected in a mating manner; as well as The magnetic ring is inserted into the end cover structure on the side of the end cover structure opposite to the fan. The distance by which the magnetic ring extends into the end cap structure is no more than 5 mm.

2. The fan end cover assembly according to claim 1, characterized in that, The distance by which the magnetic ring extends into the end cap structure is not less than 4 mm.

3. The fan end cover assembly according to claim 1, characterized in that, Along the axial direction of the fan, the insertion depth of the main body and the split part is not less than 2.7 mm.

4. The fan end cover assembly according to claim 3, characterized in that, Along the axial direction of the fan, the insertion depth of the main body and the split part is no more than 3.8 mm.

5. The fan end cover assembly according to claim 1, characterized in that, Along the radial direction of the fan, the wall thickness of the main body and the wall thickness of the split component together constitute the wall thickness of the end cap structure.

6. The fan end cover assembly according to claim 1, characterized in that, The number of the split components is at least one.

7. The fan end cover assembly according to claim 1, characterized in that, The main body is used to connect to the end side of the fan, the splitting component is disposed on the side of the main body facing away from the fan, and the magnetic ring is inserted into the splitting component.

8. The fan end cover assembly according to claim 1, characterized in that, The end cap structure includes a circumferential wall that surrounds the periphery, and the magnetic ring is inserted into the circumferential wall.

9. The fan end cover assembly according to claim 8, characterized in that, The outer wall surface of the circumferential wall is the outer wall surface of the main body, or the outer wall surface of the circumferential wall is the outer wall surface of the split component.

10. The fan end cover assembly according to claim 8, characterized in that, The circumferential wall includes a main wall and an extension wall. The magnetic ring is inserted into the main wall, and the extension wall extends axially from the main wall toward a side away from the fan. The extension wall is located radially spaced around the outer periphery of the magnetic ring.

11. The fan end cover assembly according to claim 8, characterized in that, The thickness of the circumferential wall is 1.5~3mm.

12. The fan end cover assembly according to claim 11, characterized in that, The wall thickness of the main body and the split parts are 1.5~3mm respectively.

13. The fan end cover assembly according to claim 1, characterized in that, Along the axial direction of the fan, the ratio of the size of the area of ​​the magnetic ring that directly faces the motor to the size of the entire magnetic ring is 0.8 to 0.

9.

14. The fan end cover assembly according to claim 1, characterized in that, The magnetic ring includes a ring body and a plug ring. The plug ring extends axially at one end of the ring body. A plug groove is formed on the end cap structure. The plug ring is plugged into the plug groove. The wall thickness of the plug ring is less than the wall thickness of the ring body.

15. The fan end cover assembly according to claim 14, characterized in that, The magnetic ring includes a positioning protrusion that protrudes radially from the insertion ring, and the end cap structure has a positioning groove to accommodate the positioning protrusion.

16. The fan end cover assembly according to claim 15, characterized in that, The number of positioning protrusions is multiple, and the multiple positioning protrusions are spaced apart in the circumferential direction of the insertion ring.

17. A fan assembly, characterized in that, The device includes a fan, a motor, and a fan end cover assembly according to any one of claims 1-16, wherein the fan and the motor are disposed on both sides of the fan end cover assembly and connected by a rotating shaft, and the magnetic ring is disposed on the radially outer side of the motor.

18. An indoor unit for an air conditioner, characterized in that, Includes the wind turbine assembly as described in claim 17.

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