Waterproof structure of motor and fan

Abstract

The application relates to a waterproof structure of an electric machine and a fan, wherein the waterproof structure comprises a sealing shell and a dynamic labyrinth ring for sleeving an electric machine shaft core; the sealing shell comprises a static labyrinth ring, the dynamic labyrinth ring comprises a first annular dynamic rib, a second annular dynamic rib and a third annular dynamic rib, and the first annular dynamic rib, the second annular dynamic rib and the third annular dynamic rib are embedded in the static labyrinth ring. The application can realize waterproof of an impeller and the electric machine, reduce the probability of electric machine soaking, short circuit and burning, and further improve the service life of the fan.

Description

Technical Field

[0001] This application relates to the field of wind turbine technology, and more specifically, to a waterproof structure for an electric motor and a wind turbine. Background Technology

[0002] Currently, existing wind turbines do not have an inverted waterproof structure for the impeller, making it easy for water to flow into the rotor housing. When used in applications requiring high levels of sealing and waterproofing, the motor is prone to being submerged in water, short-circuiting, or burning out, thus affecting the motor's service life. Utility Model Content

[0003] The purpose of this application is to provide a waterproof structure for an electric motor and an electric motor. This waterproof structure and fan can achieve waterproofing of the impeller and the motor, reduce the probability of the motor being submerged in water, short-circuiting, or burning out, and thus improve the service life of the fan.

[0004] In a first aspect, a waterproof structure for an electric motor is provided, comprising: a sealing shell and a moving labyrinth ring for fitting onto the motor shaft. The sealing shell includes a static labyrinth ring, and the dynamic labyrinth ring includes a first annular dynamic rib, a second annular dynamic rib, and a third annular dynamic rib, all of which are embedded in the static labyrinth ring.

[0005] This application embeds the first, second, and third annular moving ribs of the moving labyrinth ring into the stationary labyrinth ring, enabling the moving labyrinth ring and the stationary labyrinth ring to cooperate to form a labyrinth waterproof structure with three waterproof layers, which can prevent liquid water from flowing into the motor.

[0006] In an optional embodiment, the static labyrinth ring includes a first annular static rib, and the first annular dynamic rib is located on the outer layer of the first annular static rib.

[0007] In this optional embodiment, the first annular static rib can be disposed on the outer layer of the first annular static rib, thereby improving the waterproof performance.

[0008] In an optional embodiment, the first annular moving rib partially overlaps with the first annular stationary rib.

[0009] This optional embodiment can partially overlap the first annular movable rib with the first annular stationary rib, thereby avoiding gaps between the first annular movable rib and the first annular stationary rib in the vertical direction, thus preventing water from flowing in through the gaps and improving waterproof performance.

[0010] In an optional embodiment, the static labyrinth ring further includes a second annular static rib, the second annular dynamic rib being located between the first annular static rib and the second annular static rib.

[0011] This optional embodiment can position the second annular movable rib between the first annular stationary rib and the second annular stationary rib, thereby embedding the second annular movable rib into the stationary labyrinth ring and making the second annular movable rib serve as an additional waterproof layer between the first annular stationary rib and the second annular stationary rib, thereby improving waterproof performance.

[0012] In an optional embodiment, the second annular moving rib partially overlaps with the first annular stationary rib and the second annular stationary rib.

[0013] This optional embodiment can partially overlap the second annular movable rib with the first annular stationary rib and the second annular stationary rib, thereby avoiding gaps in the vertical direction between the second annular movable rib and the first and second annular stationary ribs, thus preventing water from flowing in through the gaps and improving waterproof performance.

[0014] In an optional embodiment, the static labyrinth ring includes a third annular static rib, and the third annular dynamic rib is located between the second annular static rib and the third annular static rib.

[0015] In this optional embodiment, the third annular moving rib can be embedded between the second annular stationary rib and the third annular stationary rib.

[0016] In an optional embodiment, the third annular moving rib partially overlaps with the second annular stationary rib and the third annular stationary rib.

[0017] This optional embodiment, by partially overlapping the third annular moving rib with the second and third annular stationary ribs, can avoid gaps in the vertical direction between the third annular moving rib and the second and third annular stationary ribs, thereby preventing water from flowing in through these gaps and improving waterproof performance.

[0018] In an optional embodiment, the sealing housing further includes a receiving cavity for housing an electronic control PCBA.

[0019] This optional implementation allows for the mounting of the electronic control PCBA within a receiving cavity.

[0020] In an optional embodiment, the second annular static rib and the second annular moving rib are provided with drainage chambers in the horizontal direction.

[0021] This optional embodiment allows the liquid water in the second annular moving rib to be discharged from the water outlet gap under the action of centrifugal force.

[0022] Secondly, this application provides a fan that includes a waterproof structure for the motor as described in the first aspect.

[0023] The wind turbine of this application has superior waterproof performance through the waterproof structure of the first aspect.

[0024] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of a waterproof structure for an electric motor disclosed in an embodiment of this application; Figure 2 This is a schematic diagram of another waterproof structure for a motor disclosed in an embodiment of this application; Figure 3 yes Figure 2 An enlarged diagram of point A in the diagram.

[0027] Icons: 1-Sealed shell; 2-Static labyrinth ring; 21-Third annular static rib; 22-Second annular static rib; 23-First annular static rib; 3-Shaft core; 4-Moving labyrinth ring; 41-First annular moving rib; 42-Second annular moving rib; 43-Third annular moving rib; 100-Receiving cavity; 200-Drainage cavity. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Currently, existing wind turbines do not have an inverted waterproof structure for the impeller, making it easy for water to flow into the rotor housing. When used in applications requiring high levels of sealing and waterproofing, the motor is prone to being submerged in water, short-circuiting, or burning out, thus affecting the motor's service life.

[0032] To address the shortcomings of existing technologies, this application provides a waterproof structure for a motor. By embedding the first annular moving rib 41, the second annular moving rib 42, and the third annular moving rib 43 of the moving labyrinth ring 4 into the stationary labyrinth ring 2, the moving labyrinth ring 4 and the stationary labyrinth ring 2 can cooperate to form a labyrinth waterproof structure with three waterproof layers, which can prevent liquid water from flowing into the motor.

[0033] Furthermore, this application also provides a fan that has better waterproof performance by adopting a waterproof structure for the motor.

[0034] Please see Figure 1 , Figure 1 This is a schematic diagram of a waterproof structure for an electric motor disclosed in an embodiment of this application. For example... Figure 1 As shown, the waterproof structure includes a sealing shell 1 and a moving labyrinth ring 4 for fitting onto the motor shaft core 3. The sealing shell 1 includes a stationary labyrinth ring 2, and the moving labyrinth ring 4 includes a first annular moving rib 41, a second annular moving rib 42, and a third annular moving rib 43. The first annular moving rib 41, the second annular moving rib 42, and the third annular moving rib 43 are all embedded in the stationary labyrinth ring 2.

[0035] In this embodiment, by embedding the first annular moving rib 41, the second annular moving rib 42, and the third annular moving rib 43 of the moving labyrinth ring 4 into the stationary labyrinth ring 2, the moving labyrinth ring 4 and the stationary labyrinth ring 2 can cooperate to form a labyrinth waterproof structure with three waterproof layers, which can prevent liquid water from flowing into the motor.

[0036] In this embodiment, the first annular movable rib and the stationary labyrinth ring form a first waterproof structure, the second annular movable rib and the stationary labyrinth ring form a second waterproof structure, and the third annular movable rib and the stationary labyrinth ring form a third waterproof structure. The three waterproof structures progressively improve the waterproof performance. For example, under special circumstances, when water breaks through the first waterproof structure and flows in, it will encounter the second waterproof structure, which further isolates it. If, under special circumstances, some water still breaks through the second waterproof structure, it can also be isolated by the third waterproof structure.

[0037] In this embodiment, the moving labyrinth ring 4 rotates relative to the stationary labyrinth ring 2. During installation, the moving labyrinth ring 4 can be rotated to make the annular moving rib of the moving labyrinth ring 4 embed into the annular stationary rib of the stationary labyrinth ring.

[0038] In this embodiment of the application, as an optional implementation, the static maze ring 2 includes a first annular static rib 23, and a first annular dynamic rib 41 is located on the outer layer of the first annular static rib 23.

[0039] In this optional embodiment, the first annular static rib 23 can be disposed on the outer layer of the first annular static rib 23, thereby improving the waterproof performance.

[0040] In this optional implementation, such as Figure 1 As shown, the first annular moving rib 41 being located outside the first annular stationary rib 23 means that the first annular moving rib is positioned in front of the first annular stationary rib 23. Through use, it has been found that this provides better waterproof performance compared to positioning the first annular stationary rib 23 in front of the first annular moving rib.

[0041] In this embodiment of the application, as an optional implementation, the first annular moving rib 41 and the first annular stationary rib 23 partially overlap.

[0042] This optional embodiment can partially overlap the first annular moving rib 41 and the first annular stationary rib 23, thereby avoiding gaps between the first annular moving rib 41 and the first annular stationary rib 23 in the vertical direction, thus preventing water from flowing in through the gaps and improving waterproof performance.

[0043] In this optional embodiment, the partial overlap between the first annular moving rib 41 and the first annular stationary rib 23 means that the end of the first annular moving rib 41 coincides with the end of the first annular stationary rib 23.

[0044] In one optional embodiment of this application, the static maze ring 2 further includes a second annular static rib 22, and the second annular dynamic rib 42 is located between the first annular static rib 23 and the second annular static rib 22.

[0045] This optional embodiment can position the second annular movable rib 42 between the first annular stationary rib 23 and the second annular stationary rib 22, thereby embedding the second annular movable rib 42 into the stationary labyrinth ring 2 and making the second annular movable rib 42 serve as an additional waterproof layer between the first annular stationary rib 23 and the second annular stationary rib 22, thereby improving the waterproof performance.

[0046] In this optional embodiment, a gap is provided between the first annular stationary rib 23 and the second annular stationary rib 22, that is, the first annular stationary rib 23 and the second annular stationary rib 22 are spaced apart, and correspondingly, the second annular moving rib 42 is inserted into the gap between the first annular stationary rib 23 and the second annular stationary rib 22.

[0047] In this embodiment of the application, as an optional implementation, the second annular moving rib 42 partially overlaps with the first annular stationary rib 23 and the second annular stationary rib 22.

[0048] This optional embodiment can partially overlap the second annular moving rib 42 with the first annular stationary rib 23 and the second annular stationary rib 22, thereby avoiding gaps in the vertical direction between the second annular moving rib 42 and the first annular stationary rib 23 and the second annular stationary rib 22, thus preventing water from flowing in through the gaps and improving waterproof performance.

[0049] In this optional embodiment, the partial overlap between the second annular moving rib 42 and the first annular stationary rib 23 and the second annular stationary rib 22 means that the end of the second annular moving rib 42 overlaps with the end of the first annular stationary rib 23, and the end of the second annular moving rib 42 overlaps with the end of the second annular stationary rib 22.

[0050] In this embodiment of the application, as an optional implementation, the static maze ring 2 includes a third annular static rib 21, and a third annular dynamic rib 43 is located between the second annular static rib 22 and the third annular static rib 21.

[0051] In this optional embodiment, the third annular moving rib 43 can be embedded between the second annular stationary rib 22 and the third annular stationary rib 21.

[0052] In this optional embodiment, the third annular moving rib 43 being located between the second annular stationary rib 22 and the third annular stationary rib 21 means that the third annular moving rib 43 is inserted into the space between the second annular stationary rib 22 and the third annular stationary rib 21.

[0053] In this embodiment of the application, as an optional implementation, the third annular moving rib 43 partially overlaps with the second annular stationary rib 22 and the third annular stationary rib 21.

[0054] This optional embodiment, by partially overlapping the third annular moving rib 43 with the second annular stationary rib 22 and the third annular stationary rib 21, can avoid gaps in the vertical direction between the third annular moving rib 43 and the second annular stationary rib 22 and the third annular stationary rib 21, thereby preventing water from flowing in through the gaps and improving waterproof performance.

[0055] In this optional embodiment, the partial overlap between the third annular moving rib 43 and the second annular stationary rib 22 and the third annular stationary rib 21 means that the end of the third annular moving rib partially overlaps with the end of the second annular stationary rib, and the end of the third annular moving rib partially overlaps with the end of the third annular stationary rib.

[0056] In an optional embodiment, the sealing shell 1 further includes a receiving cavity 100 for placing an electronic control PCBA.

[0057] In this optional implementation, the electronic control PCBA can be installed through the receiving cavity 100.

[0058] In this optional embodiment, the size of the receiving cavity is set according to the size of the electronic control PCBA, so as to be sufficient to install the electronic control PCBA, wherein the electronic control PCBA refers to a PCBA board used for motor control.

[0059] In one optional embodiment of this application, the second annular static rib 22 and the second annular dynamic rib 42 are provided with drainage chambers 200 in the horizontal direction.

[0060] This optional embodiment allows the liquid water in the second annular moving rib 42 to be discharged from the water outlet gap under the action of centrifugal force.

[0061] For this optional implementation method, please refer to [link / reference]. Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of another waterproof structure for an electric motor disclosed in an embodiment of this application. Figure 3 yes Figure 2 An enlarged diagram of point A in the image. (See image for example.) Figure 3 As shown, the second annular static rib 22 and the second annular moving rib 42 are provided with drainage chambers 200 in the horizontal direction.

[0062] In addition, this application embodiment also provides a fan, which includes a waterproof structure of the motor as described in the embodiment of this application.

[0063] The wind turbine of this application has superior waterproof performance due to the waterproof structure of the embodiment of this application.

[0064] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0065] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A waterproof structure for an electric motor, characterized in that, include: Sealing housing and moving labyrinth ring for fitting onto the motor shaft; The sealing shell includes a static labyrinth ring, and the dynamic labyrinth ring includes a first annular dynamic rib, a second annular dynamic rib, and a third annular dynamic rib, all of which are embedded in the static labyrinth ring.

2. The waterproof structure of the motor as described in claim 1, characterized in that, The static labyrinth ring includes a first annular static rib, and the first annular dynamic rib is located on the outer layer of the first annular static rib.

3. The waterproof structure of the motor as described in claim 2, characterized in that, The first annular moving rib partially overlaps with the first annular stationary rib.

4. The waterproof structure of the motor as described in claim 2, characterized in that, The static maze ring also includes a second annular static rib, the second annular dynamic rib being located between the first annular static rib and the second annular static rib.

5. The waterproof structure of the motor as described in claim 4, characterized in that, The second annular moving rib partially overlaps with the first annular stationary rib and the second annular stationary rib.

6. The waterproof structure of the motor as described in claim 4, characterized in that, The static maze ring includes a third annular static rib, and the third annular dynamic rib is located between the second annular static rib and the third annular static rib.

7. The waterproof structure of the motor as described in claim 6, characterized in that, The third annular moving rib partially overlaps with the second annular stationary rib and the third annular stationary rib.

8. The waterproof structure of the motor as described in claim 1, characterized in that, The sealing shell also includes a receiving cavity for placing the electronic control PCBA.

9. The waterproof structure of the motor as described in claim 4, characterized in that, The second annular static rib and the second annular moving rib are provided with drainage cavities in the horizontal direction.

10. A fan, characterized in that, The fan includes a waterproof structure for the motor as described in any one of claims 1-9.

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